Loading...
HomeMy WebLinkAboutRemedial Investigation Report - Tetrachloroethylene (PCE) Plume Characterization Project Summary_December 2022 Remedial Investigation Report City of San Luis Obispo Tetrachloroethylene (PCE) Plume Characterization Project Summary DECEMBER 2022 CITY OF SAN LUIS OBISPO CITY OF SAN LUIS OBISPO Remedial Investigation Report DECEMBER 2022 Prepared by Water Systems Consulting, Inc ACKNOWLEDGEMENTS The Remedial Investigation Report was prepared by Water Systems Consulting, Inc. The primary authors are listed below. Joshua Reynolds, PE Joe Kingsbury, PG, CHG Cassandra Springer, GIT Water Systems Consulting, Inc. would like to acknowledge the significant contributions of the City of San Luis Obispo. The primary contributors are listed below. Nick Teague Jennifer Metz Bobby Browning Miguel Barcenas, PE Shawna Scott Mychal Boerman Aaron Floyd Table of Contents Remedial Investigation Report City of San Luis Obispo | i TABLE OF CONTENTS Executive Summary .............................................................................................................. ES-1 1.0 Introduction .................................................................................................... 1-1 1.1 Overview and Purpose .............................................................................................. 1-2 1.2 Project Benefits ......................................................................................................... 1-3 1.3 Project Goal and Objectives ...................................................................................... 1-3 1.4 Project Scope ........................................................................................................... 1-3 1.5 Report Organization .................................................................................................. 1-5 1.6 Legal Basis and Regulatory Authority ....................................................................... 1-5 2.0 Background and Setting ................................................................................. 2-1 2.1 Project Area .............................................................................................................. 2-2 2.2 San Luis Obispo Valley Groundwater Basin Topography and Boundaries ................ 2-2 2.3 Summary of Previous PCE Investigations ................................................................. 2-7 3.0 Environmental Data Review and Data Gap Evaluation ................................... 3-1 3.1 Database Evaluation and Screening Criteria ............................................................. 3-2 3.2 Primary Sites of Concern ........................................................................................ 3-13 3.3 Data Gap Evaluation ............................................................................................... 3-14 3.4 PCE Plume Understanding Following RI/FS Work Plan Analysis ............................ 3-26 4.0 Investigation Program .................................................................................... 4-1 4.1 Proposed Investigation Activities Following the RI/FS Work Plan .............................. 4-2 4.2 Evaluation of Existing Wells ...................................................................................... 4-3 4.3 Groundwater Exploration Borings ............................................................................. 4-7 5.0 Results and Findings ...................................................................................... 5-1 5.1 Vertical Flow and Water Chemistry Profiling Data ..................................................... 5-2 5.2 Pumping Test Data ................................................................................................... 5-7 5.3 Exploratory Boring Investigation Results ................................................................. 5-10 5.4 PCE Plume Characterization .................................................................................. 5-20 Appendix A Basin Setting Figures ........................................................................................ A Appendix B Previous Basin Investigation Figures and Tables .............................................. B Appendix C Environmental Data Resources Area and Corridor Report ................................ C Appendix D GSI Hydrogeology Cross Sections .................................................................... D Appendix E Submittals and Permits for Fieldwork ................................................................ E Appendix F WSC Summary Report of Well Profiling Fieldwork ............................................ F Table of Contents Remedial Investigation Report City of San Luis Obispo | ii Appendix G Field Notes and Photos from Well Profiling Fieldwork ....................................... G Appendix H BESST Reports on Ambient Flow and Chemistry Profiling Fieldwork ................ H Appendix I BSK Analytical Lab Results from Well Profiling and Sampling Fieldwork ............ I Appendix J Boring Locations, Utilities, and Pavement Repair ............................................... J Appendix K Field Notes and Photos from Boring Investigation Fieldwork ............................. K Appendix L FGL Soil Sample Lab Results from Exploratory Borings .................................... L Appendix M FGL Water Quality Lab Results from Exploratory Borings .................................M Appendix N Gregg Drilling CPT Logs and Report ................................................................. N Appendix O Cleath-Harris Geologists Soil Classification Logs .............................................. O Appendix P Quality Assurance Project Plan ......................................................................... P List of Figures Remedial Investigation Report City of San Luis Obispo | iii LIST OF FIGURES Figure ES-1 EDR Report Database Evaluated Sites ............................................................. ES-5 Figure ES-2 Maximum Groundwater PCE Concentration at Exploratory Borings and Wells .. ES-7 Figure ES-3 Map of PCE Concentration Contours ................................................................ ES-8 Figure 2-1 Project Area ........................................................................................................... 2-3 Figure 2-2 Regional Groundwater Elevation (Source, GSI, Fall 2021) ..................................... 2-4 Figure 2-3 PCE Evaluated Sites and 2005 Plume Delineation .............................................. 2-18 Figure 3-1 EDR Database Evaluated Sites ............................................................................. 3-5 Figure 3-2 Groundwater PCE Concentrations Site Investigation from 1985 to 1994 .............. 3-17 Figure 3-3 Groundwater PCE Concentrations Site Investigation from 1995 to 1999 .............. 3-18 Figure 3-4 Groundwater PCE Concentrations Site Investigation from 2000 to 2004 .............. 3-19 Figure 3-5 Groundwater PCE Concentrations Site Investigation from 2005 to 2009 .............. 3-20 Figure 3-6 Groundwater PCE Concentrations Site Investigation from 2010 to 2014 .............. 3-21 Figure 3-7 Groundwater PCE Concentrations Site Investigation from 2015 to 2019 .............. 3-22 Figure 3-8 Existing Production Wells ..................................................................................... 3-25 Figure 3-9 2005 PCE Delineation and FEMA Flood Zones ................................................... 3-27 Figure 3-10 Project Area with Potential PCE Source Area and 2005 Plume .......................... 3-29 Figure 4-1 Ambient and Dynamic Flow Profiling Wells ............................................................ 4-4 Figure 4-2 Pump Test Observation Wells ................................................................................ 4-6 Figure 4-3 Final Exploratory Groundwater Boring Locations ................................................. 4-10 Figure 4-4 Exploratory Groundwater Boring Locations B-01 Through B-10 ........................... 4-11 Figure 4-5 Exploratory Groundwater Boring Locations B-11R Through B-17 ........................ 4-12 Figure 4-6 Exploratory Groundwater Boring Locations B-18R Through B-29 ........................ 4-13 Figure 4-7 Exploratory Groundwater Boring Locations B-31 Through B-34 ........................... 4-14 Figure 5-1 Well Profiling PCE Results ..................................................................................... 5-3 Figure 5-2 Estimation of Aquifer Transmissivity from 24-hr Constant-Rate Pump Test Data . 5-10 Figure 5-3 Cross Section Transect Lines Map ...................................................................... 5-12 Figure 5-4 Cross Section A-A' ............................................................................................... 5-13 Figure 5-5 Cross Section B-B' ............................................................................................... 5-14 Figure 5-6 Cross Section C-C'............................................................................................... 5-15 Figure 5-7 Maximum PCE Concentration at Borings and Wells ............................................. 5-19 Figure 5-8 Groundwater Elevation Contours in the Project Area (Spring 2022) ..................... 5-22 Figure 5-9 Map of PCE Concentration Contours ................................................................... 5-23 Figure 5-10 Comparison of 2005 and 2022 PCE Plume Boundary Delineations ................... 5-24 List of Tables Remedial Investigation Report City of San Luis Obispo | iv LIST OF TABLES Table 3-1 EDR Report Listed Sites ......................................................................................... 3-3 Table 3-2 Existing Production Wells ...................................................................................... 3-23 Table 4-1 Step-Rate Drawdown Pumping Rate ....................................................................... 4-5 Table 4-2 Final Sampling Methods and Depths ....................................................................... 4-9 Table 5-1 Results of 8-hr Step-Rate Test ................................................................................ 5-8 Table 5-2 Results of 24-hr Constant-Rate Pump Test and Water Level Recovery Test ........... 5-8 Table 5-3 Summary of Testing Results for Groundwater and Soil Samples .......................... 5-16 Acroynms & Abbreviations Remedial Investigation Report City of San Luis Obispo | v ACROYNMS & ABBREVIATIONS µS/CM microsiemens per centimeter µG/L micrograms per liter µG/M3 micrograms per cubic meter AC asbestos cement AF acre-feet AFY acre-feet per year BASIN San Luis Obispo Valley Basin BESST BESST, Inc. BPS booster pump station CAL EPA California Environmental Protection Agency CAL POLY California Polytechnic University CH2M CH2M Hill, Inc. CITY City of San Luis Obispo CFU/ML colony forming units per milliliter CIS-DCE cis-1,2-dichlorothene COC constituent of concern CORTESE DTSC Hazardous Waste & Substance Sites List CPT cone penetrometer test CR6+ hexavalent chromium DI ductile iron DNAPL dense non-aqueous phase liquid DTSC Department of Toxic Substances Control EDR REPORT Environmental Data Resources® Area and Corridor report ENVIROSTOR DTSC’s Site Mitigation and Brownfields Reuse Program’s EnviroStor GAC granular activated carbon GIS geographic information system GPM gallons per minute H2O2 hydrogen peroxide HASP health and safety plan Acroynms & Abbreviations Remedial Investigation Report City of San Luis Obispo | vi LRRP low reservoir response plan LUST leaking underground storage tank MCL maximum contaminant level MG/KG milligrams per kilogram MG million gallons MGP manufactured gas plant MPN/100 ML most probable number per 100 milliliters NPL National Priorities List NTU nephelometric turbidity units O2 oxygen O3 ozone OH hydroxyl radicals PAH polycyclic aromatic hydrocarbon PCB polychlorinated biphenyl PCE tetrachloroethylene PCI/L picocuries per liter PFAS per- and polyfluoroalkyl substances PG&E Pacific Gas and Electric Company PID photoionization detector PPB parts per billion PPM parts per million PROJECT SLO PCE Plume Characterization Project PRV pressure reducing valve PSI pounds per square inch PVC polyvinyl chloride QORE QORE Property Sciences RP responsible party RWQCB State of California Regional Water Quality Control Board SCADA supervisory control and data acquisition SCP Site Cleanup Program SEACOR Science & Engineering Analysis Corporation SECOR SECOR International Incorporated SEMS Superfund Enterprise Management System SLIC Spills, Leaks, Investigations, and Cleanups Acroynms & Abbreviations Remedial Investigation Report City of San Luis Obispo | vii SMCL secondary maximum contaminant level SOUTH SLO PCE PLUME South San Luis Obispo PCE Plume STANTEC Stantec Consulting Services SWRCB State of California Water Resources Control Board TCE trichloroethylene TPH total petroleum hydrocarbons TOC total organic carbon TON threshold odor units TRANS-DCE trans-1,2-dichlorothene EPA U.S. Environmental Protection Agency URS URS Corporation USA Underground Service Alert UST underground storage tank VOCS volatile organic compounds WIP well investigation program WWME City of San Luis Obispo’s General Plan, Water and Wastewater Management Element Executive Summary Remedial Investigation Report City of San Luis Obispo | ES-1 Executive Summary The section presents a summary of the project background, goal, objectives, methodology, findings, limitations, and next steps. IN THIS SECTION • Project Background • Project Benefits • Project Purpose, Goal, and Objectives • Findings • Limitations • Next Steps Executive Summary Remedial Investigation Report City of San Luis Obispo | ES-2 Project Background and Scope of Work Summary The City of San Luis Obispo Tetrachloroethylene (PCE) Plume Characterization Project (Project) was initiated to characterize a PCE plume within the San Luis Valley Subarea of the San Luis Obispo Valley Groundwater Basin, DWR Bulletin 118 Basin No. 3-09 (Basin), in San Luis Obispo County, California. Funding for the planning phase of the Project came from the California State Water Resources Control Board (SWRCB) Proposition 1 Groundwater Grant Program Agreement No. SWRCB0000000000D1912530. Water Systems Consulting, Inc. (WSC), in coordination with the City of San Luis Obispo (City), has been responsible for the Project planning and management. There have been multiple investigations within the San Luis Valley Subarea of the Basin that have focused on PCE contamination, both at the regional level and the site-specific level. The prior studies delineated a PCE plume that impacted a considerable portion of the San Luis Valley Subarea, including at least one well the City intends to use for drinking water supply. Previous investigations indicated migration of the plume could threaten other potable drinking water supply wells and non-potable wells in the San Luis Valley Subarea. The primary groundwater users in the Basin include municipal, agricultural, and domestic (i.e., rural residential, small community water systems, and small commercial entities) users. The following list summarizes the work to date on the Project: • Preparation of a Remedial Investigation/ Feasibility Study Work Plan (RI/FS Work Plan) which summarizes historical data and background studies required to understand the current PCE plume extents and data gaps. The RI/FS Work Plan also includes identification of the required field investigations to characterize the plume. For additional details refer to the RI/FS Work Plan prepared by WSC in 2021 (WSC, Inc., 2021). • Field investigations to support plume characterization. The field investigations included well profiling and groundwater and soil sampling. The well profiling included discrete depth sampling and flow testing to characterize PCE concentrations across screened intervals. One existing active well and three inactive wells were profiled during this investigation. The groundwater and soil sampling included borings at 30 locations to collect groundwater and soil samples to investigate the physical extent of the PCE plume. • Preparation of this Remedial Investigation Report which summarizes the field investigation work completed to improve the understanding of the plume and show the current characterization of the plume including the plume extents and concentration distribution. • Creation of a groundwater model to perform a hydraulic capture zone analysis to evaluate PCE capture with a range of extraction well and treatment alternatives. The hydraulic capture zone analysis was prepared by Cleath-Harris Geologists and is included in the Feasibility Study Report prepared in 2022 (WSC, Inc., 2022). • Preparation of a Feasibility Study Report to evaluate extraction well and treatment alternatives and technologies to treat the PCE Plume and meet the remedial action Executive Summary Remedial Investigation Report City of San Luis Obispo | ES-3 objectives. For additional details, refer to the Feasibility Study Report prepared by WSC in 2022 (WSC, Inc., 2022) . Project Benefits The Project is critical for the City to secure existing groundwater supplies and will provide the following benefits: 1. Provides the tools necessary to enhance local water supply reliability for the City which otherwise relies on surface water supplies to meet water supply demands. 2. Recommends cleanup alternatives (e.g., treatment) necessary to successfully improve the sustainability of the Basin, a High Priority Basin, which has limited groundwater as a source for drinking water. 3. Benefits the City, a disadvantaged community, by improving its water supply resiliency and availability. Project Purpose, Goal, and Objectives Long-term exposures in drinking water above the Federal and California maximum contaminant levels (MCL 1) of 5 micrograms per liter (μg/L) can cause adverse effects to the liver, kidneys, and central nervous system (SWRCB, 2017). The primary purpose of the Project is to conduct a remedial investigation to characterize the PCE plume extents and concentrations, prepare a feasibility study to evaluate and develop alternatives for the clean-up (e.g., extraction and treatment), and future removal of PCE contamination in drinking water wells in the San Luis Valley Subarea of the Basin. Based on this purpose, the goal of the Project is to expand and diversify the City’s water supply portfolio to improve water supply resiliency. Specific objectives include: 1. Characterize and delineate the PCE plume through subsurface investigations and provide ongoing monitoring of the plume by installation of a groundwater monitoring well network. Installation of the monitoring well network is proposed for a potential future implementation phase of the project. 2. Estimate plume migration and degradation over time. Additional fate and transport modeling is recommended to better predict the PCE plume migration and degradation over time. 3. Identify influent water quality for well-head treatment at existing non-operable production wells. 1 MCLs are drinking water standards adopted as regulations by the State of California to protect public health. Executive Summary Remedial Investigation Report City of San Luis Obispo | ES-4 Findings PCE Source Database Review The Project began with a records and database search which evaluated properties in an approximately 3-square mile area in the vicinity of the previously identified PCE plume. The records and database search began with an Environmental Data Resources (EDR®) Area and Corridor Report (EDR Report) dated July 31, 2020. The EDR Report included 364 records from proprietary private party, federal, state, and local agency databases. In total, 90 sites of the 364 listed in the EDR Report were flagged for review Figure ES-1. The following databases were reviewed to find additional available information on the 90 sites that were flagged. Reviewed Databases (refer to Section 3.0 for additional information): 1. Federal Database a. Superfund Enterprise Management System (SEMS) database 2. State and Local Databases a. Site Mitigation and Brownfields Reuse Program’s EnviroStor (EnviroStor) database b. Leaking Underground Storage Tank (LUST) database c. Cleanup Program Sites, formerly known as Spills, Leaks, Investigations, and Cleanups (SLIC), d. California Drycleaners database e. EDR HIST AUTO database f. EDR MGP database g. Water Board Enforcement Actions database h. Hazardous Waste & Substance Sites List, also known as the Cortese database (CA Cortese) i. Voluntary Cleanup Program Properties database Notably, sites of concern previously associated with the PCE plume from historical investigations are listed in these databases. Most sites identified for further evaluation were listed in the CA LUST and CA SLIC databases. Based on review of historical reports and publicly available environmental related databases, the following sites of concern related to the PCE Plume were identified and are shown in Figure ES-1; both are known by the State Water Resources Control Board (SWRCB), Regional Water Quality Control Board (RWQCB), and Department of Toxic Substances Control (DTSC) and have undergone prior investigation: 1. Former Model Industrial Supply located at 331 Pacific Street 2. Madonna Plaza located at 227 Madonna Road Executive Summary Remedial Investigation Report City of San Luis Obispo | ES-5 Figure ES-1 EDR Report Database Evaluated Sites Madonna Plaza Model Industrial Supply Executive Summary Remedial Investigation Report City of San Luis Obispo | ES-6 Data Gathering The database research and prior report review indicated the need to gather additional data to fill known data gaps in the understanding of the PCE plume. The primary methods used to gather additional data were 1) exploratory borings and sampling, 2) vertical flow and chemistry profiling of 4 existing wells, and 3) well testing of the Highway 101 Well. A total of 30 locations were drilled and sampled as part of the exploratory boring work. Groundwater and soils samples were collected from various depths at the 30 locations including a total of 98 groundwater samples for water quality testing. PCE was detected at 14 of the boring locations and in 37 of the groundwater samples. PCE was detected in 3 of the 4 production wells that were profiled including the Highway 101 Well where testing indicated that clay layers around the well could hold and release PCE upon initiating pumping. Additional details for the field investigation are included in Section 4.0. Plume Characterization The information on the location and concentration of PCE discovered in the data gathering work was used to create a plume location and concentration contour map. The data indicates a high concentration of PCE in the vicinity of the intersection of Walker Street and High Street. This location had the highest measured concentration of 21 μg/L of PCE obtained in the exploratory borings. Figures Figure ES-2 and Figure ES-3 show the maximum concentrations measured at each boring location and the resulting plume contour map. This space intentionally blank. Executive Summary Remedial Investigation Report City of San Luis Obispo | ES-7 Figure ES-2 Maximum Groundwater PCE Concentration at Exploratory Borings and Wells Executive Summary Remedial Investigation Report City of San Luis Obispo | ES-8 Figure ES-3 Map of PCE Concentration Contours Executive Summary Remedial Investigation Report City of San Luis Obispo | ES-9 Limitations The grant agreement was modified with Grant Amendment 2 to remove the siting and installation of the monitoring well network and to remove the fate and transport groundwater modeling. The City has applied for funding of an implementation grant which will include this work through Round 3 of Proposition 1. At the time of writing, the grant awards have not been released. Depending on the project schedule and grant timeline, the City should use the data from the future monitoring wells to update and/or confirm the findings of the groundwater models. Although two primary properties are considered for the source of the PCE contamination, this report is not intended to identify Responsible Parties (RP) for future cleanup and remediation. Additional work is required by the RWQCB, SWRCB, and DTSC to make any determinations of a RP. The plume extents that were developed through the analyses of this remedial investigation represent the maximum PCE concentrations of water samples collected in the exploratory borings and existing wells. Uncertainty in the estimates exist and are inherent to the procedures used; furthermore, the data collected is only a set of samples in the larger basin aquifer. Factors which were too complex to consider for this investigation included:  Hydrogeology, such as plume transport, adsorption/advection, variations in depth, or seasonal fluctuations;  Changes in concentrations at wells not sampled for this investigation but may have been included in previous plume characterization investigations; and  Accuracy limitations in groundwater sampling and or the analytical processing performed by the laboratories. The Feasibility Study Report in November 2022 identifies the potential plume treatment options which includes installation of groundwater treatment wells with granular activated carbon treatment systems to capture, contain to the extent practical, and treat the PCE plume (WSC, Inc., 2022). Siting, design, and construction of the treatment wells is included in the City’s application for a Round 3 Proposition 1 groundwater grant. Next Steps The City has applied for grant funding using Round 3 of the Proposition 1 Groundwater Grant Program. If the City is awarded funding the program will: 1. Prepare a fate and transport model to understand the movement of PCE through the groundwater basin. 2. Site, design, and install a monitoring well network. 3. Use data from the monitoring well network to update and/or confirm the groundwater modeling. 4. Site, design, and install pump and treat wells to capture, contain to the extent practical, and treat the PCE plume. 1.0 Introduction Remedial Investigation Report City of San Luis Obispo | 1-1 1.0 Introduction The San Luis Obispo Tetrachloroethylene Plume Characterization Project provides the City and Regional Water Quality Control Board with the tools to protect the groundwater basin, evaluate and select remedial actions that will reduce plume migration, and treat the PCE contamination over time. This will allow the City to use groundwater as a source of supply and expand a reliable, locally controlled drinking water source. IN THIS SECTION • Overview and Purpose • Project Benefits • Project Goals and Objectives • Project Scope • Report Organization • Legal Basis and Regulatory Authority 1.0 Introduction Remedial Investigation Report City of San Luis Obispo | 1 -2 1.1 Overview and Purpose The San Luis Valley Subarea of the San Luis Obispo Valley Groundwater Basin, DWR Bulletin 118 Basin No. 3-09 (Basin) is a drinking water basin impacted by regional tetrachloroethylene (PCE) contamination. The PCE contamination of the San Luis Valley Subarea of the Basin limits the City of San Luis Obispo’s (City) use of groundwater as a source of drinking water. PCE is a chemical used in cleaning, textile operations, and metal degreasing activities. Long-term exposures in drinking water above the Federal and California maximum contaminant levels (MCL2) of 5 micrograms per liter (μg/L) can cause adverse effects to the liver, kidneys, and central nervous system (SWRCB, 2017). The primary purpose of the Project is to conduct a remedial investigation to characterize the PCE plume extents and concentrations, prepare a feasibility study to evaluate and develop alternatives for the clean-up (e.g., extraction and treatment), and removal of PCE contamination in drinking water wells in the San Luis Valley Subarea of the Basin. The initial effort in the Project is to characterize the PCE plume by researching historic sources of PCE, prior cleanup/remediation efforts, and to provide a current delineation of the PCE plume, including the physical extent and concentrations of PCE in groundwater throughout the project area. The Project was intended to complement previous investigations, including studies by QORE Property Sciences (QPS , 2005) and URS Corporation (URS 2013 and 2015) which provided initial efforts to characterize the plume. Section 3 provides additional information on prior studies. However, the data collected in these previous investigations was focused primarily on source areas and not current enough to estimate the PCE plume’s physical extent. The Project evaluates and provides recommendations for implementation strategies to 1) cleanup PCE sources to benefit the community, 2) treat PCE contaminated groundwater and, 3) deliver treated water to the City’s water distribution system. A future implementation phase of the Project is recommended which will site and install a network of groundwater monitoring wells; and site and install groundwater treatment wells to extract and treat the PCE plume. Use of water that has been extracted and treated to remove PCE will increase water supply reliability for the City and enhance future water resiliency. The Project was primarily funded by the California State Water Resources Control Board (SWRCB) Proposition 1 Groundwater Grant Program. A preliminary award confirmation was provided in a letter to the City by the SWRCB on October 18, 2019. The final project funding amount of $1,996,575 and fully executed agreement were provided in a letter to the City by the SWRCB on June 15, 2020 (Agreement No. SWRCB0000000000D1912530). Combined with the City’s 10% matching contributions ($231,394), the funding provided through the grant allowed the City to undertake this critical Project. 2 MCLs are drinking water standards adopted as regulations by the State of California to protect public health. 1.0 Introduction Remedial Investigation Report City of San Luis Obispo | 1 -3 1.2 Project Benefits The Project is critical for the City to secure existing groundwater supplies and will provide the following benefits: 1. Provides the tools necessary to enhance local water supply reliability for the City which otherwise relies on surface water supplies to meet demands 2. Recommends cleanup alternatives (e.g., treatment) necessary to successfully improve the sustainability of the Basin, a High Priority Basin, which has limited groundwater as a source for drinking water 3. Benefits the City, a disadvantaged community, by improving its water supply resiliency and availability 1.3 Project Goal and Objectives As stated in Section 1.1, the primary purpose of the Project is to characterize PCE contamination in the Basin and evaluate and select remedial actions that will reduce plume migration and treat the PCE contamination over time. From this purpose, the goal is to expand and diversify the City’s water supply portfolio to improve water supply resiliency. Specific objectives include: 1. Characterize and delineate the PCE plume through subsurface investigations and provide ongoing monitoring of the plume by installation of a groundwater monitoring well network. Installation of the monitoring well network is proposed for a potential future implementation phase of the project. 2. Estimate plume migration and degradation over time – See Section 5.0 for details on the plume characterization. Additional fate and transport modeling is recommended to better predict the PCE plume migration and degradation over time. 3. Identify influent water quality for well head treatment at existing non-operable production wells to support treatment design. 1.4 Project Scope The major Project scope activities are listed below: 1. Prepare a Remedial Investigation Feasibility Study Work Plan (RI/FS Work Plan), finalized in 2021. The RI/FS Work Plan summarizes historical data and background studies to understand the current PCE plume extents and data gaps. The RI/FS Work Plan includes the proposed investigation work plan to further understand the full extent of the PCE plume. It also establishes the remedial action objective and identifies treatment alternatives for evaluating the feasibility of developing treatment wells. 2. 2021-2022 Field Investigations 1.0 Introduction Remedial Investigation Report City of San Luis Obispo | 1 -4 2.1. Well Profiling: Performed well profiling and water quality testing of one existing active and three inactive water supply wells. The tested wells were the Calle Joaquin Agriculture Reserve (CJAR) Agricultural Well, Highway 101 Well, San Luis Ranch No. 2 Well, and Pacific Beach Well No. 1, see Section 4.24.2 for a discussion of the well profiling work. Generally, well profiling involved injecting a dye to determine where in the aquifer, vertically, the water is preferentially entering the well casing and if the tested wells were interacting with each other. The Highway 101 Well was also dynamically tested (under pumping conditions) using two aquifer pump tests to analyze how pumping would affect the water levels within the aquifer. Water quality testing for volatile organic compounds (VOCs) including PCE and per- and polyfluoroalkyl substances (PFAS). Well profiling work was completed in September 2021. 2.2. Borings for Groundwater and Soil Sampling: The borings for groundwater and soil sampling field investigations consisted of drilling and collecting soil and groundwater samples from 30 locations throughout the previously known PCE plume delineation area to investigate the current physical extent of the PCE plume. This work is described in the RI/FS Work Plan and Section 4.3 of this report. The boring field work was performed from March to July 2022. 3. Prepare Remedial Investigation Report: The Remedial Investigation Report, this report, summarizes the background research and field investigation work completed to improve the understanding of the plume. The Remedial Investigation Report establishes the current understanding of the PCE Plume extents and concentration distribution. 4. Prepare Groundwater Modeling Report: The Groundwater Modeling Report is included as Appendix A of the Feasibility Study Report. The data from the 2021-2022 field investigation was used to update and recalibrate the existing groundwater flow model. Once updated, the model was used to perform a hydraulic capture zone analysis to evaluate PCE capture with a range of treatment well alternatives. The hydraulic capture zone analysis is summarized in the Feasibility Study Report and the results of that analysis are used to understand the ability of the treatment alternatives to meet the remedial action objectives. 5. Prepare Feasibility Study Report to evaluate treatment well alternatives and technologies to treat the PCE Plume and meet the remedial action objectives. The Feasibility Study Report builds upon information presented in the previous reports. The Feasibility Study report relies on the current understanding of the Plume extents determined from the 2021-2022 field investigation work. 1.0 Introduction Remedial Investigation Report City of San Luis Obispo | 1 -5 1.5 Report Organization Executive Summary: Provides a summary of the report. Section 1 – Introduction: Provides the basis of the Project with supporting goal and specific objectives. Section 2 – Background and Setting: Presents summaries of basin setting and previous regional and site investigation projects. Section 3 – Environmental Data Review and Data Gap Evaluation: Presents a summary of environmental data review with evaluation of previous investigations to identify data gaps for further investigation. Section 4 – Investigation Program: Presents descriptions of the field work completed to obtain data used to characterize the PCE Plume. Section 5 – Findings: Presents the results of the investigation program. Section 6 – References: Presents the references used in this document. Appendices: Supporting data and reports. 1.6 Legal Basis and Regulatory Authority California’s Porter-Cologne Water Quality Control Act (1969), which became Division Seven (“Water Quality”) of the State Water Code, establishes the responsibilities and authorities of the nine Regional Water Quality Control Boards and the State Water Resources Control Board (SWRCB). The State agencies with primary responsibility for the coordination and control of water quality (Section 13001). One of nine Regional Water Quality Control Boards in California, the Central Coast Regional Board has jurisdiction over a 300-mile long by 40-mile-wide section of the State’s central coast, including the City of San Luis Obispo. The federal Clean Water Act (Public Law 92-500, as amended) provides for the delegation of certain responsibilities in water quality control and water quality planning to the states. Where the Environmental Protection Agency (EPA) and the SWRCB have agreed to such delegation, the Regional Boards implement portions of the Clean Water Act, such as the NPDES program and toxic substance control programs. The Porter-Cologne and Clean Water Acts also describe how enforcement of waste discharge regulations is to be carried out. Enforcement tools available to the Regional Board range from simple letters to the discharger, through formal Regional Board order, and direct penalty assessments, to judicial abatement for civil and/or criminal penalties. Legally noticed public hearings are required for most actions, but some enforcement actions (e.g., Cleanup or Abatement Orders) have been delegated to staff to allow for a quicker response than regularly scheduled Regional Board meetings can provide. 1.0 Introduction Remedial Investigation Report City of San Luis Obispo | 1 -6 The SWRCB and Regional Boards have legal authority to require site investigation and cleanup actions via Division 7 of the California Water Code (CWC), State Board plans and policies, and Regional Water Quality Control Plans (Basin Plans). The Regional Boards provide regulatory and technical oversight of dischargers’ (i.e., responsible parties’ (RPs’)) activities pertaining to the investigation and cleanup of pollution at sites to ensure that the dischargers clean up and abate the effects of discharges in a manner that promotes attainment of either background water quality, or the best water quality which is reasonable if background levels of water quality cannot be restored. RPs primarily are any person(s) who caused or permitted a waste discharge, but RPs can include past or current property owners that were not directly involved in the discharge of waste. The Regional Board’s Site Cleanup Program (SCP) is responsible for regulating and overseeing the investigation and cleanup of sites where recent or historical releases of pollutants to the environment (including soil, groundwater, surface water, soil gas, indoor air, and sediment) have occurred. Sites in the SCP include dry cleaners, industrial manufacturing and maintenance sites, auto repair and painting facilities, waste storage areas, printing shops, machine shops, oil fields, bulk transfer facilities, refineries, pipeline facilities, rail yards, equipment supply facilities, metal plating facilities, pesticide and fertilizer facilities, ordnance manufacturing facilities, and many others. Pollutants encountered at the sites are diverse and commonly include solvents (e.g., trichloroethylene (TCE) and PCE, petroleum hydrocarbons (e.g., gasoline, diesel, crude oil), pesticides, and heavy metals. Most of the SCP sites are focused on addressing groundwater contamination issues that often take years or decades to cleanup. Due to the presence of the regional PCE plume and the City’s desire to utilize groundwater resources, staff from the Central Coast Regional Water Quality Control Board suggested the City apply for Prop 1 funding for the PCE Plume Characterization Project. This space intentionally blank. 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2-1 2.0 Background and Setting This section describes the hydrogeologic setting of the PCE plume, including the Basin boundaries and principal aquifer units. The information presented in this section comprises the basis of the Project hydrogeologic conceptual model of the PCE plume and draws upon previously published studies prepared by QORE Property Sciences and URS Corporation. The data and information presented in this section is a summary of the relevant and important aspects of the hydrogeology and water quality that influence the PCE plume. It is not intended to be exhaustive. IN THIS SECTION • Project Area • San Luis Obispo Valley Groundwater Basin Topography and Boundaries • Summary of Previous PCE Investigations 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -2 2.1 Project Area The project area, shown in Figure 2-1, is located in the San Luis Valley, south of California Polytechnic State University in the southern portion of the City of San Luis Obispo, in San Luis Obispo County, California and within DWR Bulletin 118 Basin No. 3-09 and Region 3 of the SWRCB. 2.2 San Luis Obispo Valley Groundwater Basin Topography and Boundaries The Basin is oriented in a northwest-southeast direction and is composed of unconsolidated or loosely consolidated sedimentary deposits. It is approximately 14 miles long and 1.5 miles wide. It covers a surface area of about 12,700 acres (19.9 square miles). The Basin is bounded on the northeast by relatively impermeable bedrock formations of the Santa Lucia Range, and on the southwest by the formations of the San Luis Range and the Edna fault system. The bottom of the Basin is defined by the contact of permeable sediments with the Miocene-aged impermeable bedrock and Franciscan Assemblage rocks (DWR, 2003). A topographic map displaying the Basin boundaries is presented in Appendix A, Figure 1, which also displays the watershed areas of the San Luis Obispo Creek and Pismo Creek drainages. Elevations within the Basin range from about 500 feet above mean sea level (amsl) in the southeastern extent of Edna Valley, to around 100 feet amsl where San Luis Obispo Creek flows out of the Basin (WSC et al., 2019a). The Basin is commonly referenced as being composed of two distinct valleys, with the San Luis Valley Subarea in the northwest and the Edna Valley Subarea in the southeast. The San Luis Valley Subarea is comprised of approximately the northwestern half of the Basin and is the area of the Basin drained by San Luis Obispo Creek and its tributaries (Prefumo Creek and Stenner Creek west of Highway 101, Davenport Creek, and smaller tributaries east of Highway 101). Surface drainage in San Luis Valley Subarea drains out of the Basin flowing to the south along the course of San Luis Obispo Creek toward the coast in the Avila Beach area, approximately along the course of Highway 101. The San Luis Valley Subarea includes part of the City and California Polytechnic State University (Cal Poly) jurisdictional boundaries, while the remainder of the valley is unincorporated land. Land use in the City is primarily municipal, residential, commercial, and industrial. The area in the northwest part of the Basin, along Los Osos Valley Road, has significant areas of irrigated agriculture, primarily row crops. Detailed description of the San Luis Obispo Valley Groundwater Basin including jurisdictional areas, land use, groundwater management programs and plans, geology, and water budget are provided in the Groundwater Sustainability Plan Chapter 3 – Description of the Plan Area, Chapter 4- Basin Setting, Chapter 5 – Groundwater Conditions, and Chapter 6 – Water Budget (WSC et al., 2021). A brief description of hydrogeology is provided in the following section. 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2-3 Figure 2-1 Project Area 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2-4 Figure 2-2 Regional Groundwater Elevation (Source, GSI, Fall 2021) 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -5 2.2.1 Hydrogeology Groundwater in the San Luis Valley Subarea is primarily recharged by percolation of rainfall in the Santa Lucia Range contributing to mountain front recharge via subsurface inflow, percolation of streamflow from creeks and streams within the Basin, and anthropogenic recharge from treated wastewater, agricultural irrigation, and domestic septic fields. Groundwater generally flows in a southwest direction and leaves the Basin by streamflow through San Luis Obispo Creek on the south side of the Los Osos Valley Fault (Figure 2-2). The San Luis Valley Subarea is comprised of three main water-bearing units: Recent Alluvium, Paso Robles Formation, and Pismo Formation; all three of which contain interbedded clayey aquitards. The primary non-water- bearing unit is the Franciscan Assemblage which is overlain by the three water-bearing units. The San Luis Valley Subarea becomes deeper southward and contains the alluvial, Paso Robles, and Pismo formations. This portion of the Basin averages over 100-feet thick with alluvial sediments averaging 50-feet thick, Paso Robles formation averaging 60-feet thick, and Pismo formation averaging 25-feet thick (GSI, 2019). Water levels in the project area range between 90 and 150 feet amsl (approximately 20 to 40 feet below ground surface). There are no apparent laterally extensive impermeable strata acting as hydrogeologic barriers to groundwater flow separating the three water-bearing units in the project area. Two faults exist in the area, the Madonna Fault and Los Osos Valley Fault, but only the Los Osos Valley Fault is known to act as a barrier to groundwater flow at depth (GSI Water Solutions, 2019). Hydraulic conductivities in the Recent Alluvium unit average 42 feet/day. The wells screened within the Recent Alluvium unit yield pumping rates from 10 to over 100 gallons per minute (GPM) and are subject to seasonal fluctuations in groundwater levels (GSI Water Solutions, 2019). The Paso Robles Formation consists of terrestrial deposits and the Pismo Formation of marine sedimentary beds. The Paso Robles Formation and the Pismo Formation have typical hydraulic conductivities in the intermediate to deep finer grained aquifer sediments averaging 13 feet/day (Cleath-Harris Geologists, 2019). Wells screened within the Paso Robles Formation and the Pismo Formation yield pumping rates from 100 to over 500 GPM and 100 to over 700 GPM, respectively. The non-water bearing Franciscan Assemblage is at its lowest point at the southwestern edge of the project area adjacent to the Los Osos Valley Fault. The San Luis Obispo Valley Basin Groundwater Sustainability Plan, dated October 2021, states that the estimated sustainable yield for the San Luis Valley Subarea of the Basin is 2,500 AFY with a surplus of 700 AFY. (WSC et al., 2021) 2.2.2 Primary Users of Groundwater The primary groundwater users in the Basin include municipal, agricultural, and domestic (i.e., rural residential, small community water systems, and small commercial entities). Description of these entities are discussed in more detail in Chapter 2 of the San Luis Obispo Valley Basin Groundwater Sustainability Plan (WSC et al., 2021). In 2022, the City received its potable water supply from surface water sources including Whale Rock Reservoir, Santa Margarita 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -6 Reservoir, and Nacimiento Reservoir, plus recycled water for non-potable irrigation (Appendix A, Figure 2). The City maintains its network of production wells for supplemental and emergency supply and intends to use groundwater as a resource to improve water supply resilience and to meet future water demand. 2.2.3 Water Quality Overall, the San Luis Valley Subarea of the Basin has water quality issues that have been persistent for several decades. The constituents of concern (COCs) present in groundwater within the project area are metals, polychlorinated biphenyls, polycyclic aromatic hydrocarbons, nitrate, VOCs including PCE, hexavalent chromium (Cr6+), and total petroleum hydrocarbons (TPH) which are thought to be a result of industrial and agricultural activities within the San Luis Valley. Additionally, in 2019, per- and polyfluoroalkyl substances (PFAS 3) were detected in a well located in the project area, near the intersection of Los Osos Valley Road and Calle Joaquin south of the Former Dalidio/San Luis Ranch area; PFAS are an emerging concern in the Basin. As the City moves forward with the design and construction of groundwater treatment wells, the proposed well locations can be tested for these other COCs to determine if treatment is needed for constituents in addition to PCE. PCE was first detected above its MCL (5 µg/L) in the San Luis Valley Subarea in the late 1980’s, at which time it was detected in several well locations over a large area. PCE is a pressing water quality issue in relation to the City’s groundwater supply and the focus of this Project. Additional information about PCE is presented in Section 2.3. 2.2.4 San Luis Obispo Valley Groundwater Basin Beneficial Use – City of San Luis Obispo The City of San Luis Obispo’s General Plan Water and Wastewater Management Element (WWME) is the guiding policy document adopted by the City Council that outlines the goals, policies, and implementation measures required to provide adequate water and wastewater supply based on an assessment of current and future needs and available resources (City of San Luis Obispo, 2020). The City meets water supply demand as outlined in the WWME; a multi- source concept which includes groundwater. 3 Per the EPA: “PFAS are a group of manufactured chemicals that have been used in industry and consumer products since the 1940s. There are thousands of different PFAS, some of which have been more widely used and studied than others. One common characteristic of concern of PFAS is that many break down very slowly and can build up in people, animals, and the environment over time. Robust information about PFAS is needed to better understand the risks they pose and to be able to take effective actions to protect human health and the environment.” (United States Environmental Protection Agency, 2022) 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -7 The City needs a better understanding of the groundwater movement and water quality characteristics in the Basin to plan for groundwater treatment and to reintegrate groundwater back into the City’s water supply portfolio. The City has two wells, Pacific Bell Well and Fire Station Well, currently approved as sources of supply. In 2022, the Pacific Beach well is in standby status and the Fire Station Well is listed as inactive. The Pacific Beach Well is non-operable because of previous detections of hexavalent chromium (Cr6+). The Fire Station Well is non-operable due to detections of methyl tert-butyl ether (MTBE) also above the MCL. In 2003, the City drilled the Highway 101 Well. The City decided not to equip the Highway 101 Well with a pump and conveyance pipeline due to concerns with overall reliability related to unknown water quality characteristics. The Highway 101 Well was capped for potential future use. In response to the 2011 to 2017 statewide drought, the City reinitiated exploration of groundwater to diversify their water supply portfolio to improve resilience and sustainability. The City focused on placing the Highway 101 Well into service as a source of supply for the drinking water system. Water quality testing of the well in 2017 indicated the presence of PCE in the groundwater in exceedance of the Federal and State MCL of 5 μg/L. This Project is a critical first step in allowing the City to build water supply resiliency and to safely access groundwater. 2.3 Summary of Previous PCE Investigations Impacts to groundwater in the Basin have been known and documented starting in the late 1980’s. The following sections provide summaries of previous regional level and site-specific investigations. 2.3.1 Regional PCE Basin Investigation Three documented regional investigations on PCE contamination have been completed at the request of the RWQCB and California Environmental Protection Agency (CalEPA), Department of Toxic Substances Control (DTSC) in the San Luis Valley Subarea of the Basin since 2005. The following sections summarize the prior investigations to characterize the PCE plume. 2.3.1.1 2005 Background Study – South San Luis Obispo Groundwater PCE Plume In 2005, QORE Property Sciences (QORE) prepared a study to evaluate the South San Luis Obispo PCE Plume (South SLO PCE Plume) for the RWQCB in response to telephone discussions and a January 7, 2005 RWQCB letter. The purpose of the study was to gather and evaluate existing information regarding local area conditions to demonstrate concentrations of PCE present in groundwater within the area of the South SLO PCE Plume. The study intended to establish site-specific (local area) background values that would facilitate discrimination between discharges that threaten the water resources and minor releases that do not materially change the previously existing overall quality of local groundwater resources. The 2005 QORE report summarized known sites and investigations related to the RWQCB Well Investigation Program 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2-8 (WIP) through interviews with San Luis Obispo Fire Department and San Luis Obispo Utilities Department staff along with file review of the RWQCB WIP files. Key interview statements from the 2005 QORE report are as follows: • “According to interview information provided by Ms. Brown of the SLOFD, the plume originated at one or more dry cleaning facilities located near the intersections of Archer and Carmel Streets with Higuera Street in the downtown area of San Luis Obispo. Among the facilities specifically mentioned were Paul’s Dry Cleaning (two locations), Model Linen Supply, and Spotless Dry Cleaners. Groundwater contamination with PCE has been detected in shallow groundwater (as near as 20 feet below ground surface [bgs]) and at concentrations from the MCL (5 μg/L) to greater than 250 μg/L.” • “According to interview information from Mr. Gary Henderson deputy director of the Water Division] of the City of San Luis Obispo [Utilities] Department, wells used by the water utility that were known to be contaminated included the Dalidio Farm well, the Auto Park well, and Denny’s well. Under circumstances of greater reliance on groundwater, the water was routinely pretreated to remove PCE and other related organic compounds, using activated carbon, prior to being introduced into the [City’s] water system. Mr. Henderson indicated that drinking water drawn from groundwater sources was “periodically tested” for PCE as well as other contaminants. Mr. Henderson also reported the City’s installation of an unspecified number of groundwater monitoring wells at the direction of the Board.” • “In a September 22, 2000 Record of Communication (ROC), Christa Fay of PAR Environmental reported that Mr. Richard Alshire of the RWQCB reported to her that PCE was present in groundwater underlying the location of the CalTrans facility along [Madonna] Road east of Highway 101. Her ROC also reported the presence of groundwater at a depth of approximately 20 feet bgs containing PCE at concentrations on the order of 20 to 25 μg/L. This PCE reportedly was attributed by the RWQCB to a release at two dry cleaners, one at 331 Pacific Street (Model Industrial Supply) and one at 385 Higuera Street (Spotless Cleaners).” The 2005 QORE Report summarized the WIP file review and interviews into “Map” locations 1 through 10 shown in the South SLO PCE Plume map (Appendix B-1, Figure 1). Summaries of their findings are provided below: Map No. 1 (Spotless Cleaners): On August 30, 1991, groundwater from a City-installed well (the “three-day well”) at the former Spotless Cleaner (385 Higuera Street) was reported to contain PCE at a concentration of 33 μg/L. The well was installed to a total screen depth of 37 feet within the Higuera Street right-of-way. The report compared PCE concentrations at numerous locations along San Luis Obispo Creek which indicated that the PCE detected near the former Spotless Cleaner appears to be indicative of “baseline” conditions in the San Luis Creek watershed rather than a direct result of release(s) at that property. This summary also indicated the presence of PCE at concentrations from 20 to 40 μg/L in water along the San Luis Obispo Creek channel from an unidentified report. 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2-9 Map No. 2 (Model Industrial Supply): A May 6, 1992 environmental assessment report prepared by Pacific Engineering documented the presence of PCE in groundwater at Model Industrial Supply, located at 331 Pacific Street. The measured PCE concentration in water was 256 μg/L (total well depth approximately 38 feet) and at concentrations of 70 and 5,000 micrograms per kilogram (μg/kg) in soil at depths of 20 and 38 feet bgs, respectively. Information provided by this facility indicated that PCE likely was used from the 1950s through the 1960s and that the business had stored fuel and/or organic solvents in multiple large (8,000-gallon) underground storage tanks (USTs). At the request of the RWQCB (September 2, 1992), Pacific Engineering proposed to install two additional groundwater monitoring wells (one off-site to the southwest) to aid in assessing the degree and extent of PCE contamination. The summary concluded that based on the presence and use of PCE, its potential storage in USTs, and the measured high concentration of PCE in soil and groundwater, this area is indicated to be the principal source of PCE in the South SLO PCE Plume. Map No. 3 (PG&E Substation): On July 29, 1991, Pacific Gas and Electric (PG&E) reported to the RWQCB the results of groundwater sampling and analysis at their Zone 1 site, located at the intersection of Pacific, Walker, and Higuera Streets. That letter documented the presence of PCE in groundwater at a concentration of 100 μg/L at the northernmost corner of the substation. A lower concentration of PCE (41 μg/L) was measured in a well located in an easterly side-gradient position. In January 1992, the RWQCB reviewed a Preliminary Endangerment Assessment of the PG&E substation. That letter provided a historical summary of a former manufactured gas plant (MGP) occupying that area and the balance of the city block extending to the southeast to Pismo Street. The RWQCB acknowledged the known presence of a PCE plume underlying this area and its probable origin at one or more upgradient dry cleaners. Map No. 4 (Paul’s Dry Cleaner): Paul’s Dry Cleaner operated at 214 Higuera Street beginning in the 1950s. The summary stated that up to 60 gallons per month of PCE reportedly were consumed at Paul’s Dry Cleaner, and PCE had been used for on-site dry cleaning since 1980. According to a December 20, 1990 Memorandum to the San Luis Obispo Utilities Director, Fire Marshal Bob Newman documented that Paul’s stored dry-cleaning fluid in a 1,000-gallon UST from 1952 to 1987, at which time it was “closed in-place” (i.e., abandoned). Soil vapor screening results from the perimeter of Paul’s dry Cleaner indicated that the dry-cleaning facility was contributing to the South SLO PCE Plume. According to a RWQCB letter dated September 17, 1991, the “Petrex ion count” reported just south of the dry cleaner site was the highest reported PCE concentration that the Board had observed to that date at any suspected PCE of contamination site. Measured concentrations of PCE reported in the existing on-site wells ranged from 6.7 parts per billion by volume (ppb) to 20 ppb. No additional information was identified to document whether the expected assessment or further work was conducted or required by the Board. Map No. 5 (Pacific Coast Center): The Pacific Coast Center is located at 75 Higuera Street along the eastern boundary of the South SLO PCE Plume, at the northeast quadrant of Higuera and Bridge Streets. Groundwater monitoring data from April 19, 1990 at that facility indicated the presence of PCE at concentrations ranging from a maximum of 21 μg/L immediately east of the “soil remediation area” to non-detect farther south in the down-gradient direction. 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2-10 Map No. 6 (Dalidio Farm Production Well): In a March 15, 1990 letter to the City, the RWQCB presented its understanding of conditions surrounding the presence of PCE in groundwater from the Dalidio Farm municipal production well (Dalidio Well) [San Luis Ranch Well No. 2]. That letter recapped the RWQCB’s general understanding of conditions in the South SLO PCE Plume and noted the presence of PCE in numerous wells across the area. In addition to dry cleaning facilities, the letter explained the plume shape and PCE distribution as indicative of a distant source, with potential contribution from agricultural soil fumigants and pesticides. Water quality analyses of samples from the Dalidio Well were recorded during the period from 1989 through 1992. Over that timeframe the measured concentration of PCE ranged from less than 5 μg/L to 30 μg/L. No clear trend in concentrations was evident over that timeframe, and no information has been obtained regarding the total depth or production depth of this well. Map No. 7 (Border Patrol Well) [CJAR Ag Well]: In a March 27, 1990 letter to the U.S. Border Patrol, the Board presented its understanding of conditions surrounding the presence of PCE in groundwater from the source area to as far south as Los Osos Valley Road. The letter included documentation of PCE contamination of water recovered in 1989 from the Border Patrol Well. The measured concentration of PCE (17 μg/L) was described as considerably more than the MCL, and treatment was recommended if the well were to remain in service. In addition to information presented in the letter, the Board identified illegal discharges to, and releases from, the local municipal sanitary sewer system as a probable additional source of PCE. Map Nos. 8 through 10 (Auto Park Well, Frangie Well, Calle Joaquin Well): QORE personnel reviewed information in RWQCB files for an additional three noteworthy well locations. QORE recorded measured PCE concentrations and dates for the Auto Park Well (20 ppb, 1990), Frangie Well (6.4 ppb, 1989), and Calle Joaquin Wells (0.9 ppb, 1990), each located in the downgradient portion of the South SLO PCE Plume. 2.3.1.1.1 2005 QORE Report Conclusions The 2005 QORE Report indicated evidence of PCE release at one or more locations near South and Higuera streets as the source of the South SLO PCE Plume. In addition, data evaluation indicated the apparent presence of “baseline” concentrations of PCE in the San Luis Obispo Creek watershed upgradient of the plume point sources. Distribution of PCE concentrations at the “Map” locations indicate the length of the South SLO PCE Plume in a systematic pattern of exponentially decreasing concentrations with distance from the source areas. That pattern of distribution is consistent with prior plume depictions by the RWQCB and by others, as well as with that typical of degraded chlorinated volatile organic compound (VOC) plume. 2.3.1.2 2013 Investigation Report – San Luis Obispo PCE Groundwater Plume The 2013 Investigation Report was prepared by URS Corporation (URS) for the DTSC under Work Order No. 1-088-1.0-101591, Agreement No. 09-T9089. The scope of work for this investigation included the collection of passive (64 locations) and active (23 locations) soil vapor samples. The samples were analyzed for VOCs to assist in identifying the potential source(s) of 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -11 the PCE plume in groundwater by evaluating PCE concentrations in soil vapor near select DTSC- identified properties. DTSC targeted specific properties for investigation based on its review of existing groundwater monitoring data and historical land use data regarding commercial or industrial properties that potentially used PCE. Sites of interest provided by DTSC to URS are shown on Appendix B-2, Figure 1 and are listed in Appendix B-2, Table 1 (San Luis Obispo – Former/Current Dry-Cleaning Sites) and Appendix B-2, Table 2 (San Luis Obispo – Other Sites of Interest). To further evaluate PCE distribution in groundwater, DTSC reviewed reports from other properties under evaluation for environmental contamination. TCE concentrations of up to 320 μg/L 4 were measured in groundwater samples collected since 1991 in the “Williams Water Co. supply wells”5. Groundwater samples collected in March 2007 from the Elks Lodge site, located on Elks Lane at Highway 101, indicate the highest concentration detected at 7.6 μg/L. Samples collected at the PG&E Zone 1 Substation, located at Higuera Street and Pacific Street (immediately south of dry- cleaning site No. 2), in August 2008 indicate PCE concentrations up to 25 μg/L. Field sampling was conducted in two stages. The first stage was a passive soil vapor survey conducted in November 2011 using a total of 65 passive soil vapor samples collected using GORE-SORBER® modules installed in a test hole approximately 2 to 3 feet bgs. The second stage was an active soil vapor survey conducted in November 2012 that included soil vapor samples collected at 23 locations analyzed for VOCs immediately after collection by a mobile laboratory. Sampling locations for the second stage were selected based on data collected during the first stage. Results of the passive soil vapor survey indicated the largest adsorbed PCE masses (Appendix B-2, Figure 2) were found in the samples collected near Dry Cleaning Sites 1 (Paul’s Dry Cleaners), 2 (Spotless Cleaners), 11 (KleenRite Cleaners and others), and 16 (SLO Green Clean) (Appendix B-2, Figures 3, 4, and 6). The active soil vapor survey included collection of active soil vapor samples at 22 locations near Dry Cleaner Sites 1, 2, 6, 8, 9, 11, 12, and 16 (Appendix B-2, Figures 2 through 8). PCE was detected in 20 of the 22 samples at concentrations from 0.12 μg/L to 57.00 μg/L. The results of the active soil vapor sampling were consistent with the passive soil vapor sampling results in indicating the presence of elevated PCE concentrations near Dry Cleaner Sites 1, 2, and 11. 2.3.1.2.1 2013 URS Investigation Report Conclusions Based on the results of the passive soil vapor survey, the largest adsorbed PCE masses were found on modules installed in three areas: near Dry Cleaner Sites 1 (Paul’s Dry Cleaners), 2 (Spotless Cleaners), and 11 (KleenRite Cleaners and others) (Appendix B-2, Figures 3, 4, and 4 Concentrations are reported as parts per billion in the 2013 report which was converted to μg/L in this summary to be consistent with data reported throughout this document. 5 The “Williams Water Co. supply wells” are not located near the PCE Plume being studied in this Remedial Investigation Report and are reported as information for work done by others in the region. 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -12 6). PCE was detected during the active soil vapor survey at concentrations up to 57.00 μg/L near Dry Cleaner Site 1, 21.85 μg/L near Dry Cleaner Sites 2 and 16, and 13.81 μg/L near Dry Cleaner Site 11. URS recommendations included further investigation on the three areas with the detected PCE concentrations to determine the lateral/vertical extent of PCE in the vadose zone and groundwater. 2.3.1.3 2015 Investigation Report – San Luis Obispo PCE Groundwater Plume The 2015 Investigation Report was prepared by URS for DTSC as a continuation of work completed in 2013 and presented data collected during site investigation activities in September 2014 and November 2014. This investigation included the collection and analysis of soil vapor samples, indoor air samples, and grab groundwater samples near three dry cleaning properties (Appendix B-3, Figure 1) where elevated PCE concentrations were detected during the previous soil vapor investigation conducted in November 2012 (URS, 2013). The investigation consisted of three phases: (1) active soil vapor sampling; (2) indoor air sampling; and (3) cone penetrometer (CPT) drilling with grab groundwater sampling analysis for volatile organic compounds by EPA Method 8260B. PCE in soil vapor was reported above method detection levels in eight of the 17 samples. The distribution and concentrations of PCE detected in soil vapor samples were consistent with the soil vapor results obtained from the November 2012 investigation (URS, 2013). The highest levels of PCE in soil vapor were detected in the parking lot of 208 Higuera Street, immediately south of Paul’s Dry Cleaners (Appendix B-3, Figure 2), and along the east side of Higuera Street, extending from the former Spotless Dry Cleaners (385 Higuera Street) approximately 300 feet south (Appendix B-3, Figure 3). PCE concentrations detected in soil vapor samples collected near the former KleenRite Cleaners/Ideal Cleaners/Greg’s Cleaners were lower than for the other two areas of investigation and appear to impact a smaller area. The lateral extent of soil vapor concentrations, above screening levels, has been mostly defined at all three areas except for the southern end of the plume that originates at the former Spotless Dry Cleaners. Groundwater analytical results are shown in Appendix B-3, Table 1 which presents specific depths and details on wells located on or near the property. Results are also shown on Appendix B-3, Figures 2 through 4 including iso-concentration contours. PCE was detected above the laboratory reporting limit in seven of the 15 groundwater samples. All the reported PCE concentrations were below the MCL of 5.0 µg/L. Groundwater samples could not be collected at the former KleenRite Cleaners/Ideal Cleaners/Greg’s Cleaners due to hard soil conditions, and the relatively deep- water table at the time of investigation. Groundwater was encountered at depths ranging from 25 to 37 feet bgs in the vicinity of Paul’s Dry Cleaners and the former Spotless Dry Cleaners. Groundwater was not encountered in the upper 41 feet of soil at the former KleenRite Cleaners/Ideal Cleaners/Greg’s Cleaners. 2.3.1.3.1 2015 URS Investigation Report Conclusions Sample results for each of the sites indicates that there have been releases of PCE into soil and/or groundwater. The lateral extent of elevated soil vapor concentrations has been reasonably well 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -13 defined except for the southern end of the plumes that originate at the former Spotless Dry Cleaners and Paul’s Dry Cleaners. 2.3.2 Site PCE Investigations Since 1991, COCs in the San Luis Valley Subarea have been addressed primarily at the site scale. Multiple consulting reports, letters of communication with the DTSC, and RWQCB from various sites have been prepared to characterize their respective site COC’s related to specific point sources (Cuesta Geotechnical, 2015); (URS, 2015), (URS, 2013); (SEACOR, 1993); (CH2M, 1992); (Stantec, 2014); (PW Environmental, 1996), (PW Environmental, 1995); (CIRRUS Environmental, 1995a), (CIRRUS Environmental, 1995b). The DTSC and RWQCB have provided most of the regulatory oversight related to site investigations and clean-up efforts since the early 1990’s. There are multiple sites that are still listed as active PCE cleanup sites. Remedial investigations involving soil vapor and groundwater sampling are ongoing at active sites and efforts are being made to further characterize the extent of PCE contamination and associated clean-up efforts at each respective site. Refer to Figure 2-3 on page 2-18 for a map of the sites and the 2005 Plume Delineation. The following sections provide summaries of investigation and clean-up efforts related to key sites identified in regional investigations. 2.3.2.1 1991-1992 South San Luis Obispo Groundwater Investigation – PG&E Former Manufactured Gas Plant Site CH2M Hill, Inc. (CH2M) was contracted by PG&E to conduct an initial site investigation at the former PG&E MGP site located at 251 Pacific Street in San Luis Obispo to investigate possible contamination in soil. The report available on GeoTracker, the SWRCB’s online data management system, provides a collection of correspondence between the RWQCB, PG&E, and findings by CH2M. The initial soil investigation for PCE and other contaminants included sampling at various locations on-site and off-site of the subject property. As part of the RWQCB WIP, groundwater and soil vapor test samples were collected throughout the area. Six surface soil samples, one soil boring, and three monitoring wells were sampled on-site (Appendix B-4, Figure 1). The CH2M report presents groundwater sampling results from June 1991 (Appendix B-4, Figure 2). Groundwater levels during this period were between 15 – 30 feet bgs depending on the season. Water levels were 17.73 feet bgs, 18.31 feet bgs, and 18.79 feet bgs in MW-1, MW-2, and MW- 3, respectively. MW-3 contained the highest PCE measurement in groundwater of 100 μg/L. CH2M concluded that PCE contamination likely came from an off-site source. During the time of this investigation, the RWQCB was overseeing the investigation at several historical or current dry-cleaning facilities, one of which is within one block of the PG&E MGP facility (CH2M, 1992). 2.3.2.2 1993 Results of Monitoring Well Installation and Sampling – 214 Higuera Street Science & Engineering Analysis Corporation (SEACOR) was contracted by Paul’s Dry Cleaners to conduct an initial site investigation at 214 Higuera Street as an ongoing effort by the RWQCB 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -14 to investigate possible PCE contamination. SEACOR conducted a groundwater investigation by assessing four monitoring wells. Monitoring wells MW-1, MW-2, and MW-3 were located on-site, and MW-4 was located downgradient to the south of the site at the request of the Board as part of the investigation (Appendix B-5, Figure 1). SEACOR determined the groundwater in and around the site flows in a south to southeasterly direction. Groundwater sampling conducted in December of 1991 found PCE located in all three wells on-site. Groundwater levels at the site were between 10 – 20 feet bgs depending on the season. PCE concentrations ranged from 6 to 20 μg/L and MW-2 had the highest concentration out of all the wells samples. MW-2 is located to the northeast corner of the site and upgradient of the dry-cleaning facility. A sampled collected from MW-4 had a PCE concentration of 16 ug/L. The report states “the RWQCB would not consider Paul’s Dry Cleaner a source of PCE if the concentration in MW-4 was found to be less than 20 μg/L”, therefore, it was determined that Paul’s Dry Cleaners was not a source of PCE and the RWQCB rescinded its order and considered the case closed. 2.3.2.3 1995-1996 Soil and Groundwater Assessment Report – Stanley Motors PW Environmental was contracted by Stanley Motors to conduct an initial site investigation at the 1330 Monterey Street to investigate possible PCE contamination as part of the ongoing effort by the RWQCB WIP during the early 1990’s. In 1995, PW Environmental conducted soil and groundwater investigations by drilling 13 soil borings (SB-1 through SB-13) to depths of approximately 5-feet bgs and one monitoring well (MW-1) to a depth of 20-feet bgs with each sample analyzed for VOCs. No VOCs were detected. PW Environmental conducted another investigation in 1996 drilling an additional 16 soil borings (SB-14 through SB-29). No VOCs were detected. 2.3.2.4 2006 Annual Groundwater Monitoring Results – Former Kimball Motors SECOR International Incorporated (SECOR) was contracted by Kimball Motors in 2005 to conduct investigations into PCE contamination at 1144 Monterey Street that may have come from leaky USTs that were removed in 1988 and 1989. In addition, the site had four hydraulic hoists, a clarifier (part of a septic system), and a floor drain that were removed in 2003. In 2006, SECOR drilled temporary sampling wells and sampled existing monitoring wells. TW-3A was a temporary well installed adjacent to the building interior wall near the excavation area where the underground clarifier was located. PCE was detected at 3,500 μg/L, TCE was detected at 1,400 μg/L, trans-1,2-dichloroethene (trans-DCE) was detected at 57 μg/L, and cis-1,2- dichloroethene (cis-DCE) was detected at 1,500 μg/L in well TW-3A. A results summary is shown in Appendix B-6, Figure 1 which shows concentrations of VOCs from existing and temporary monitoring wells at the site. This site (ID T0607900067) Is listed as “COMPLETED – CASE CLOSED” on GeoTracker but was reopened in 2014 under another case number (ID T10000001025) which is described in Section 2.3.2.5. 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -15 2.3.2.5 2014 Corrective Action Plan for Soil and Groundwater–- Former Kimball Motors In 2014, Stantec Consulting Services (Stantec) implemented a corrective action plan to remediate TPH and VOCs impacted soil by excavation of an existing concrete floor slab and removal of soil up to 5 feet bgs (Appendix B-7, Figure 1). Upon completion of excavation, soil samples were collected to evaluate the continued presence of TPH or VOCs. Two monitoring wells (MW-9 and MW-10) were abandoned during excavation activities. Excavation confirmation sampling results showed elevated levels of TPH-gasoline present but no elevated levels of VOCs. After excavation, 100-gallons of liquid solution chemical oxidizer was added to the bottom of the open excavation area to treat contaminated soil and groundwater at the site. After the oxidizing solution was applied, concrete slurry was applied the following day to backfill the excavated area. The corrective action appears to have successfully removed nearly all the impacted soil that remained in place following the 2003 remedial excavation. Significantly impacted soil was encountered adjacent to and beneath the load bearing wall which divides the former automotive service bays. The estimated volume of impacted soil remaining in this location is 1.5 cubic yards, and, based on analytical results, does not contain VOCs. The removal of residual impacted soil followed by chemical oxidation treatment is expected to mitigate the presence of gasoline range hydrocarbons and chlorinated VOC in shallow groundwater at the site. Verification groundwater monitoring will be conducted to evaluate degradation of VOC in groundwater to levels acceptable for case closure. Historical groundwater monitoring data have adequately established the groundwater flow direction and lack of impacts to monitoring wells situated on the southern and eastern portions of the property. This site is listed as “OPEN” on GeoTracker, and continued verification monitoring is underway. 2.3.2.6 2014 Hydrogeologic Description and PCE Characterization – Dalidio Laguna Ranch In 2014, Cleath-Harris Geologists (CHG) performed tasks to characterize the PCE distribution in the groundwater underlying the Dalidio Laguna Ranch property, San Luis Obispo, California (Appendix B-8, Figure 1). The PCE groundwater contamination found in the vicinity of the Dalidio Laguna Ranch has been attributed to dry cleaning facilities spills beginning in the 1930’s. Previous investigations discussed in the report indicated two irrigation wells on-site were found to have PCE concentrations of 9 μg/L at Well 1202 (on the east side of the ranch) and 1.1 μg/L at Well 1204 (on the southwest side of the ranch). For this study, PCE concentration was analyzed in four on-site wells and two off-site wells. Groundwater samples were collected in October 2014 at the Dalidio Laguna Ranch Wells No. 1, No. 2, No. 5 and a well identified as the Domestic Well located at the northwest property boundary along Madonna Road. The highest PCE concentrations are in the wells just west of Highway 101 (from 8.1 μg/l at Dalidio Laguna Ranch Well No. 2 to 10.4 ug/l at the CJAR irrigation well), with lower concentrations at wells east of Highway 101 and along the western side of the Dalidio Laguna Ranch (Appendix B-8, Table 1). 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -16 Groundwater underlying the Dalidio Laguna Ranch appears to occur within a shallow and a deep aquifer. Groundwater levels in the wells ranged from 112.8 feet amsl in the Domestic Well to 108.3 feet amsl in the Border Patrol well. Groundwater samples from the shallow aquifer indicate PCE concentrations exceeding the MCL along Highway 101 but not in the western portion of the Dalidio Laguna Ranch. The deep aquifer groundwater could not be isolated for sampling and testing of PCE due to the lack of a well that solely produces water from the deep aquifer. The report states that it is possible that PCE-bearing shallow groundwater could be entering the deep aquifer where the deep aquifer may be recharged from the shallow aquifer or via wells that have perforations in the shallow and deep aquifers (CHG, 2014). 2.3.2.7 2015 Groundwater Monitoring – Former Model Industrial Supply Cuesta Geotechnical was contracted to conduct an initial site investigation at 331 Pacific Street to evaluate the state of PCE contamination in response to a RWQCB request in 2013. Groundwater sampling was completed by Cuesta Geotechnical in January 2015 in three monitoring wells. Previous attempts to perform groundwater sampling shortly after the RWQCB request could not be completed because groundwater levels were below the bottom of the monitoring wells. Groundwater elevations and PCE concentrations from 1992 through 2015 presented in the report are included in Appendix B-9, Table 1. The highest PCE concentrations from 1992 through 2015 are consistently found at MW-1 (256 μg/L PCE in 1992 and 150 μg/L PCE in 2015) which is located on-site. In addition, MW-3 which is located downgradient of the site has seen an increase in PCE concentration from 1992 to 2015 (52 μg/L PCE in 1992 and 122 μg/L PCE in 2015). The site layout along with the groundwater contours and PCE concentrations from 2015 are included in Appendix B-9, Figure 1. 2.3.2.8 2018-2019 Remedial Investigation Work Plan – Former Model Industrial Supply In 2018, Cuesta Geotechnical was contracted to prepare a Remedial Investigation Work Plan to define the extent of PCE in soil, soil vapor, and groundwater at the former Model Industrial Supply site at 331 Pacific Street. Soil, soil vapor, and groundwater sample results for PCE, TCE, and Vinyl Chloride are summarized in Appendix B-10, Table 1. Soil samples collected from MW-1 through MW-3 were collected in 1992 and collected at various depths ranging from 15 to 30 feet bgs. PCE soil concentrations in soil samples from MW-1, MW-2, and MW-3 ranged from <0.005 to 0.5 mg/kg. Soil samples collected from B-1, SG-1, SG-2, and SG-3 were collected in 2017 and all collected at a depth of 5 feet bgs. PCE soil concentrations in soil samples from B-1, SG-1, SG- 2, and SG-3 ranged from 0.00183 to 0.142 mg/kg (Appendix B-10, Figure 1) and all were below Environmental Screening Levels (ESLs). Soil vapor samples were collected in 2017 from SG-1, SG-2, and SG-3 and had PCE concentrations ranging from 660 to 58,000 µg/m3 (Appendix B-10, Figure 2). SG-1 was the only sample collected with a PCE concentration below 2,100 µg/m3 commercial ESL. The depth to groundwater at MW-1, MW-2, and MW-3 ranges between 18 and 24 feet bgs and the groundwater gradient trends southwest at a gradient of 0.005 feet/foot. MW-2 is located off- 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -17 site to the northwest and upgradient of MW-1 (located on-site) and MW-3. MW-3 is downgradient of both MW-1 and MW-2 to the southwest. Groundwater samples collected at the site primarily were collected in 1992 and 1995 with concentrations ranging from 5.7 to 256 µg/L, but recent samples collected at the site in 2015 ranged from 1.1 to 150 µg/L (Appendix B-10, Figure 3). MW- 1 from 1992 to 2015 has persistently had PCE concentration in groundwater above the 5 µg/L MCL but has seen a decrease in PCE concentration over the sampling period whereas MW-2 (upgradient well) has seen a decrease in PCE below the MCL and MW-3 (downgradient well) has seen in increase in PCE above the MCL. The proposed Remedial Investigation Work Plan outlines a phased approach to collect the data necessary to delineate the lateral and vertical limits of PCE in soil, soil vapor, and groundwater. The evaluation of PCE and other possible VOCs in indoor air will be investigated. Initial soil and soil vapor sampling will be focused on on-site data collection which will be used to evaluate the need for off-site data. The phased approach to the site investigation is being proposed to account for the responsible parties limited financial resources and to use developed data when determining additional assessment and remedial evaluation requirements most efficiently. 2.3.2.9 2019 Post-Remediation Groundwater Monitoring Results – Former Kimball Motors Stantec performed post-remediation groundwater monitoring in 2019 to evaluate shallow groundwater quality following excavation of contaminated soil and application of treatment chemicals to groundwater in October 2014. Activities included gauging four existing monitoring wells to confirm the groundwater flow direction and sampling of well MW-6, which is located immediately down-gradient of the previous remedial excavation area. Several VOCs were detected at low concentrations in the sample from well MW-6 including 1,2-dichloropropane (2.7 μg/L), cis-DCE (3.0 μg/L), TCE (1.2 μg/L), trans-DCE (1.9 μg/L), and vinyl chloride (5.2 μg/L). Results are presented in Appendix B-11, Table 1. Results indicate that VOC concentrations in well MW-6 increased from January 2017 to January 2019. The 2019 levels remain below MCL for all compounds detected except for vinyl chloride. This space intentionally blank. 2.0 Background and Setting Remedial Investigation Report City of San Luis Obispo | 2 -18 Figure 2-3 PCE Evaluated Sites and 2005 Plume Delineation 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3-1 3.0 Environmental Data Review and Data Gap Evaluation This section describes an extensive database search to assess and identify potential sources of contamination not recognized in previous investigations and to evaluate the regulatory status of previously identified PCE sources. The findings of the database search and evaluation was used to isolate data gaps and provide justification for an additional investigation identified later in this report. This section concludes with the understanding of the PCE plume in 2020, prior to implementing the Project. IN THIS SECTION • Database Evaluation and Screening Criteria • Primary Sites of Concern • Data Gap Evaluation • PCE Plume Understanding Following RI/FS Work Plan Analysis 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -2 3.1 Database Evaluation and Screening Criteria The work detailed in Section 3.0 was generally performed during preparation of the RI/FS Work Plan and is repeated here for reference (WSC, Inc., 2021). To evaluate sites in the vicinity of the PCE Plume, WSC obtained a comprehensive Environmental Data Resources® Area and Corridor report (EDR Report) dated July 31, 2020, that consisted of, but not limited to, Sanborn maps, topographic maps, historical aerial photos, and historical property use (Appendix C). The EDR Report also provided comprehensive search results for California and federal regulatory environmental related databases (see Section 3.1.1). The South SLO PCE Plume area spans approximately one-square mile within the San Luis Valley Subarea as previously identified and discussed in Section 2.0. The EDR Report includes a coverage area of approximately three-square miles originating from 331 Pacific Street which is in the immediate vicinity of previously identified PCE impacts. The EDR Report search area is geographically bounded by the following locations: • California Polytechnic State University, San Luis Obispo to the north. • Intersection of Orcutt Rd and Tank Farm Rd to the east. • Buckley Road to the south. • Intersection of Los Osos Valley Road and West Foothill Boulevard to the west. The EDR Report provides information regarding status, registrations, enforcement actions, and known contamination for sites within the defined area. WSC reviewed the EDR Report to evaluate listed sites that may be sources for the PCE plume and potentially may further impact the City’s groundwater supply at wells within the region. The EDR Report provided information for 364 sites of potential environmental concern within the search area. Many of these site’s environmental concern are not related to PCE groundwater contamination, therefore, WSC developed a list of site criteria to create a focused list of PCE related sites. Sites identified with the following criteria were not included in further evaluation: • Chemical/hazardous waste storage facilities (active storage or de minimis storage) that were not associated with a release to the environment were eliminated from further evaluation. These sites are typically newer small facilities that meet environmental handling requirements and have no history of regulatory action (e.g., car dealerships, auto repair shops), these types of sites are required to report their use of chemicals or hazardous waste to regulatory agencies. • Sites with no reference to groundwater impacts associated with VOCs were eliminated from further evaluation. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3-3 Sites were prioritized for follow-up review and evaluation based on the criteria described below: • Sites that have a recorded release to groundwater or on-going groundwater remediation were flagged for review. • Sites with PCE, trichloroethylene (TCE), or other chlorinated solvent groundwater contamination were flagged for review. • Sites with other chemicals-of-concern related to industrial processes (e.g., Cr6+, 1,2,3- trichloropropane) that had documented impacts to groundwater were flagged for review. • Additional sites near previously identified sites (see Section 2.3). • Proximity to San Luis Obispo Creek where preferential flow paths may transport contamination downstream and downgradient in the groundwater. • Proximity to City owned potable groundwater production wells. 3.1.1 Environmental Database Search Findings The EDR Report included 364 records from proprietary private party, federal, state, and local agency databases. A summary of database search results is provided in Table 3-1 below. Table 3-1 EDR Report Listed Sites Database Name Number of Listings Federal Databases NPL (National Priority List) 0 SEMS (Superfund Enterprise Management System) 2 CORRACTS (Corrective Action Report) 0 State and Local Databases CA Envirostor 14 CA LUST (Leaking Underground Storage Tank) 127 COR ACTION 0 CA Toxic Pits 0 CA SLIC (Spills, Leaks, Investigations, and Cleanup Program) 31 CA DRYCLEANERS 4 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3-4 Database Name Number of Listings CA WIP (Well Investigation Program) 0 CA CORTESE 102 CA VCP (Voluntary Cleanup Program) 3 EDR Proprietary Information MGP (Manufactured Gas Plants) 2 Hist Auto 70 Hist Cleaner 9 Total 364 Most of the sites listed in Table 3-1 were excluded from further review based on the evaluation criteria presented in Section 3.1. Sites found to be relevant to the purpose of this report are discussed in the following sections. In total, 90 sites (Figure 3-1) were flagged for review across the various databases with many sites having records retained in more than one database. Notably, sites of concern previously associated with the PCE plume from historical investigations are listed in these databases. Most sites identified for further evaluation were listed in the CA LUST and CA SLIC databases. A description of each of the databases that were reviewed, and the sites identified within, are provided in the sections below. This space intentionally blank. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -5 Figure 3-1 EDR Database Evaluated Sites 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -6 3.1.1.1 Federal Databases 3.1.1.1.1 SEMS The Superfund Enterprise Management System (SEMS) database contains data on potentially hazardous waste sites that have been reported to the EPA by states, municipalities, private companies, and private persons, pursuant to Section 103 of the Comprehensive Environmental Response, Compensation and Liability Act. The SEMS database contains sites which are either in the process of being screened for inclusion on the National Priorities List (NPL), proposed to be on the NPL, or on the NPL. Two sites were listed in the EDR Report; however, none of the sites were active and were noted as “Site does not qualify for the NPL based on existing information.” No sites in the Basin were associated with PCE contamination on the SEMS database. 3.1.1.2 State and Local Databases 3.1.1.2.1 ENVIROSTOR The DTSC’s Site Mitigation and Brownfields Reuse Program’s EnviroStor (EnviroStor) database and website identifies sites that have known contamination or sites for which there may be reasons to investigate further. The database includes the following site types: Federal Superfund sites; State Response, including Military Facilities and State Superfund; Voluntary Cleanup; and School sites. EnviroStor provides identification of formerly contaminated properties that have been released for reuse, properties where environmental deed restrictions have been recorded to prevent inappropriate land uses, and risk characterization information that is used to assess potential impacts to public health and the environment at contaminated sites. Six sites contained referenced PCE contamination in groundwater and are summarized below: 1. Pacific Gas and Electric Company (PG&E), Zone 1 Substation (EnviroStor ID 40490013) – This site is located at the corner of Pacific, Walker, and Higuera Streets on a 0.34-acre portion of a former manufactured gas plant. PG&E purchased the property in 1938 and operated a substation and communications center from 1940 until the present. The site is being overseen by the DTSC under a Voluntary Cleanup Agreement with PG&E. This site is listed as “Active as of 4/3/2007” on the EnviroStor website. Potential contaminants of concern include PCBs, PAHs, and TPH-diesel that have impacted the soil and groundwater. PCE has been detected in a well on-site and in an upgradient monitoring well and source is suspected to come from an off-site location to the north and east of the site. o This Site is not believed to be a PCE source. Groundwater data collected from this site is used to evaluate the regional PCE plume. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -7 2. PG&E Manufactured Gas Plant – 1 Former MGP (EnviroStor ID 60001181) – This site located at the 1390 Walker Street and 280-290 Pismo Street on a 0.84-acre portion of a former manufactured gas plant. The site is being overseen by the DTSC MGP Team under a Voluntary Cleanup Agreement with PG&E. The site is listed as“"Active as of 10/5/200”". Potential contaminants of concern include PAHs, TPH-motor oil, and TPH-diesel that have impacted the soil and groundwater. PCE has been detected in soil vapor on-site and in groundwater from an upgradient monitoring well located off-site. o This Site is not believed to be a PCE source. Groundwater data collected from this site is used to evaluate the regional PCE plume. 3. Former Model Industrial Supply (EnviroStor ID 60002305) – This site is located at 331 Pacific Street on a 0.37-acre property just east of the PG&E Substation and MGP. The owner of the site has owned the property since 1966 and has multiple tenants over the years. This property at one time was an industrial dry-cleaning business that was in operation through 1973. In January 1965, the owner reported that Model Industrial Supply had a PCE release at the site. The site is listed as “Active as of 02/22/2016” and was under evaluation by the DTSC in 2020. Potential contaminants of concern include PCE and TPH that have impacted the soil and groundwater. o This site is suspected to be a possible PCE source. Groundwater data collected from this site is used to evaluate the regional PCE plume. 4. 1327 Archer Street (Former MGP Plant; EnviroStor ID 60001034) – This site is located at the southwest corner of Archer and Pismo Streets. This site consists of a 0.34-acre property that was used as an MGP between 1909 and 1918. In 1918, the MGP ceased operation and was decommission in 1926. The two-story building located in the eastern half of the property has been used for office suites since 1962. Two USTs were uncovered in 2007 and 2008 and were removed. The site is being overseen by the DTSC MGP Team under a Voluntary Cleanup Agreement with the owner, Coastal California Properties, LCC, and PG&E. The site is listed as “Certified O&M – Land Use Restrictions only as of 10/21/2020”. Potential contaminants of concern include Lead, PAH, TPH-motor oil, TPH- diesel, and PCE that have impacted the soil and groundwater. PCE was detected from a borehole located near the northeast corner of the site where soil and groundwater samples were collected. o This Site is not believed to be a PCE source. Groundwater data collected from this site is used to evaluate the regional PCE plume. 5. JBL Scientific Facility (EnviroStor ID 60002454) – This site an active chemical manufacturing facility located at 277 Granada Drive and consists of 0.5-acres. JBL operated the site from 1989 to 1991 before it was acquired by the current occupant, Promega Biosciences. Prior to JBL’s operations, the site was undeveloped. The site is listed as “No Action Required as of 7/11/2018”. Potential contaminants of concern include 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -8 PCE, chloroform, toluene, and xylene that may have impacted the soil and groundwater. PCE was detected in groundwater on-site and no wells upgradient or downgradient of the site had any PCE detected. o This Site is not believed to be a PCE source. Groundwater data collected from this site is used to evaluate the regional PCE plume. 6. Madonna Plaza (Envirostor ID 60002342) – This site is a shopping area located at 227 Madonna Road. Limited data from EnviroStor is available for this site. The site is listed as “Inactive – Needs Evaluation as of 8/2/2016”. Potential contaminants of concern include PCE, TPH-diesel, and TPH-gasoline. o Site could be a potential PCE source. Groundwater data collected from this site is used to evaluate the regional PCE plume. Several other sites were listed in the EDR that were found on EnviroStor, but these sites are located outside the project area, lacked data that would indicate potential PCE contamination on- site, or were ruled out based on criteria discussed in Section 3.1. 3.1.1.2.2 LUST The Leaking Underground Storage Tank (LUST) database is maintained by the SWRCB and contains an inventory of reported leaking UST incidents that may impact, or have the potential to impact, groundwater quality. A total of 127 sites within the boundaries of the study area were identified in the LUST database. Six sites are defined in the EDR Report as “open” or have ongoing remediation or characterization of groundwater impact and are included in this review. Facilities with the status of “soil impact only” and/or did not have VOCs found in soil or groundwater were deemed not to be related to PCE contamination and not evaluated. Six sites met the screening criteria which are summarized below: • Madonna Construction Yard (GeoTracker ID T060795449) – This site is located at 284 Higuera Street. This site had two USTs related to storage of TPH-gasoline and TPH-diesel that were removed in 2000. The site is listed as “COMPLETED – CASE CLOSED as of 08/06/2002”. VOCs were not historically identified as used on-site. PCE has been detected on-site, however, this site is not presumed to be a source of PCE contamination since the site has been closed. • Kimball Motors (GeoTracker ID T0607900152) – This site is located at 1423 Calle Joaquin. This site was in operation since the early 1980’s and it wasn’t until 1986 that a leak was detected in a UST that stored gasoline. The site is listed as “COMPLETED – CASE CLOSED as of 01/26/2012”. Potential contaminants include TPH-gasoline, gasoline additives, and PCE that may have impacted the soil and groundwater. It appears that the data available suggests that PCE may not have been present in the groundwater until 1992 and possibly migrated from an off-site source. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -9 • Kimball Motors (GeoTracker ID T0607900067 and ID T10000001025) – This site is located at 1144 Monterey Street. RWQCB reviewed this site and administratively closed this case in April 2009. However, upon further review by the RWQCB the site was reopened as a new site cleanup case (GeoTracker ID T10000001025). A detailed description of this site is provided in Section 2.3.2.5 and 3.1.1.2.3. • Pacific Coast Design Center (GeoTracker ID T0607900027) – This is located at 81 Higuera Street. The site is listed as “COMPLETED – CASE CLOSED as of 07/29/1992”. Chemicals that have impacted this site include TPH-diesel and PCE. The RWQCB closed this site and issued a No Further Action letter based on non-detection of TPH-d and PCE below the MCL. • 659 Higuera St (GeoTracker ID T10000000486) – This site is the former location of Strong’s Cleaners located at 659 Higuera Street. The site is listed as “COMPLETED – CASE CLOSED as of 12/03/2008”. In 2008, a preliminary soil and groundwater assessment was completed in an area of a UST which in included drilling four soil borings and groundwater sample using a Hydropunch® sampler. VOCs were non-detect for soil and groundwater samples. A case closure letter and deed restriction were issued by the San Luis Obispo County Fire Department in 2008. • Monterey Motors – See SLIC Section 3.1.1.2.3. 3.1.1.2.3 SLIC The Cleanup Program Sites, formerly known as Spills, Leaks, Investigations, and Cleanups (SLIC), is a database that compiles records of sites that have the potential to impact water quality in California, with emphasis on groundwater. A total of 34 SLIC sites were identified, of those, six SLIC sites are listed as “open” or otherwise meet the criteria for further evaluation as summarized below. • Monterey Motors/Kimball Motors – This site is located at 1144 Monterey St. This site is presently owned by Kimball Motors. Several records exist for the property including: o Monterey Motors (GeoTracker ID T0607900021) – The site listed as “COMPLETED – CASE CLOSED as of 11/17/1988”. Potential contaminants include TPH and benzene that may have impacted the soil and groundwater. o Kimball Motors (GeoTracker ID T0607900067) – The site listed as “COMPLETED – CASE CLOSED as of 04/22/2009”. Potential contaminants include TPH and VOCs including PCE that may have impacted the soil and groundwater. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -10 o Kimball Motors (GeoTracker ID T10000001025) – The site is listed as “OPEN – VERIFICATION MONITORING as of 08/24/2016”. Potential contaminants include VOCs that may have impacted the soil and groundwater. • Hayward Lumber (GeoTracker ID SLT3S1551325) – This site is located at 236 Higuera Street and is near Paul’s Dry Cleaners at 214 Higuera Street. The site is approximately five-acres and has been used as light industrial property since the mid-1800’s. The Parsons family have been the longest standing owners of the property since 1916 and has been primarily operated by several companies as a lumber mill for over 100 years. The site is listed as “COMPLETED – CASE CLOSED as of 06/27/2017”. Chemical contaminants detected on-site include Cr6+, PCE, and TPH. PCE detected on-site was found in a downgradient well that was located just south of Paul’s Dry Cleaners (214 Higuera Street). • Madonna Plaza Property (GeoTracker ID SL0607960051) – This site is located at 227 Madonna Road. Madonna Plaza is a large shopping center that has a large parking lot in the center and numerous retail businesses. The site is listed as “COMPLETED – CASE CLOSED as of 11/02/2010”. Chemical contaminants detected on-site have include PCE and TPH. • Foothill Plaza (GeoTracker ID SL203471385) – This site is located at 775 Foothill Blvd. This site was a dry-cleaning facility located in a retail shopping center. The site is listed as “COMPLETED – CASE CLOSED as of 07/26/2017”. Chemicals of concern include PCE and degradation products because of spills and leaks from former dry-cleaning operations. Actions take to stop releases included termination of dry-cleaning operations, soil excavation, soil vapor extraction and bioremediation of groundwater. The site received case closure in 2017 but stated that residual pollution still exists under the site, therefore, the site was closed with a land use covenant. • PG&E Substation – See Section 3.1.1.2.1. • Paul’s Dry Cleaners – See Section 3.1.1.2.4. 3.1.1.2.4 CA DRYCLEANERS The California Drycleaners database is a list of dry cleaner related facilities with EPA identification numbers. These facilities are listed with Standard Industrial Classification codes associated with power laundries, family and commercial, garment pressing and cleaners’ agents, linen supply, coin-operated laundries and cleaning, dry cleaning plants except rugs, carpet and upholstery cleaning, industrial launderers, laundry and garment services. We have also combined EDR HIST CLEANER database data with this data to provide comprehensive coverage. A total of nine 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -11 separate sites were listed between both databases. A total of nine sites were identified, but limited data was available on these sites. • KleenRite Cleaners (EDR HIST CLEANER Record) – This site is located at 1115 Santa Rosa Street. EDR HIST CLEANER database records are present from 1975 to 1985. No other data is publicly available, and no other business was operating at this address in 2020. Paul’s Dry Cleaners (GeoTracker ID T10000012630) (EPA ID CAD981666464) – This site is located at 214 Higuera Street. This site is listed as “COMPLETED – CASE CLOSED as of 02/25/1993”. Groundwater data collected from this site is used to evaluate the regional PCE plume. EDR HIST CLEANER database records are present from 2001 to 2008. • Spring Drycleaning (EPA ID CAD982497232; EDR HIST CLEANER Record) – This site is located at 3121 S Higuera Street. EDR HIST CLEANER database records are present from 1991 to 1998. No other data is publicly available, and no other business was operating at this address in 2020. • Laguna Cleaners (EPA ID CAD981172588; EDR HIST CLEANER Record) – This site is located at 1342 Madonna Road (within Laguna Village Shopping Center). EDR HIST CLEANER database records are present from 1994 to 2014. No other data is publicly available, and Laguna Cleaners was operating at this address in 2020. • Central Coast Cleaners (EPA ID CAL000268859; EDR HIST CLEANER Record) – This site is located at 158 Higuera Street. EDR HIST CLEANER database records are present for 2003 to 2006 and 2010. No other data is publicly available, and no other business was operating at this address in 2020. • Kleanerette Dry Cleaning (EDR HIST CLEANER Record) – This site is located at 1347 Monterey Street. EDR HIST CLEANER database records are present for 2006 and 2007. No other data is publicly available, and private small financial advisor businesses was operating at this address in 2020. • G & L Investment Co. (EDR HIST CLEANER Record) – This site is located at 1266 Monterey Street. EDR HIST CLEANER database records are present from 1989 to 1997. No other data is publicly available, and no other business was operating at this address in 2020. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -12 • Sterling Cleaners (EDR HIST CLEANER Record) – This site is located at 1211 Marsh Street. EDR HIST CLEANER database records are present from 2003 to 2008. No other data is publicly available, and no other business was operating at this address in 2020. 3.1.1.2.5 EDR HIST AUTO The EDR HIST AUTO database includes businesses that usually include sites that have auto repair service stations, gas stations, or filling stations associated with their business operations. A total of seventy sites were listed on this database. A total of four were identified, but limited data was available on these sites. • Landis Automotive – This site is located at 235 Marsh Street. No data is publicly available, and no other business was associated with this address. • Kinney Earl James Jr.–- This site is located at 138 South Street. No data is publicly available, and no other business was operating at this address in 2020. • Laguna Lake Shell (GeoTracker ID T0607908385) – This site is located at 11590 Los Osos Valley Rd. The site is listed as “COMPLETED – CASE CLOSED as of 08/14/2013”. Chemical contaminants detected on-site include TPH compounds and additives. VOCs have not been detected. • Chevron USA – (GeoTracker ID T0607900052) – This site is located at 1525 Calle Joaquin. The site is listed as “COMPLETED – CASE CLOSED as of 11/6/1996”. Chemical contaminants detected on-site include TPH compounds and additives. VOCs have not been detected. 3.1.1.2.6 EDR MGP The EDR MGP database includes businesses that usually include sites that have gas station, filling station, service station establishments. This database has overlap with EDR HIST AUTO. • PG&E Manufactured Gas Plant–- See Section 3.1.1.2.1. 3.1.1.2.7 CA ENF This database provides a listing of Water Board Enforcement Actions. This includes notices that may include Oral/Verbal communication summaries, Notice of Violation letters, Expedited Payment letters, and Staff Enforcement letters. • Former Model Industrial Supply – See Section 3.1.1.2.1. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -13 3.1.1.2.8 CA CORTESE The DTSC Hazardous Waste & Substance Sites List, also known as the Cortese database or Cortese List (CA Cortese), is a planning document used by the State, local agencies, and developers to comply with California Environmental Quality Act requirements in providing information about the location of hazardous materials releases. This site list also includes SWRCB LUST sites and Integrated Waste Board sites. A total of 102 sites were part of the database. Sites that were determined to be relevant to PCE plume characterization have already been identified in previous sections as shown below: • PG&E Substation – See Section 3.1.1.2.1. • Madonna Construction Yard–- See Section 3.1.1.2.2. • Kimball Motors–- See Section 3.1.1.2.2. • Monterey Motors – See Section 3.1.1.2.3. • Pacific Coast Design Center – See Section 3.1.1.2.2. • 659 Higuera Street – See Section 3.1.1.2.2. • Chevron USA – See EDR Section 3.1.1.2.5. 3.1.1.2.9 CA VCP The Voluntary Cleanup Program Properties database includes properties with either confirmed or unconfirmed releases. The project proponents have request that DTSC oversee investigations and/or cleanup activities and have agreed to provide coverage for DTSC’s costs. • PG&E Substation – See Section 3.1.1.2.1. • 1327 Archer Street–- See Section 3.1.1.2.1. 3.2 Primary Sites of Concern Based on review of historical reports and independent review of publicly available environmental related databases, we have identified primary sites of concern related to the PCE Plume as follows: 1. Former Model Industrial Supply located at 331 Pacific Street 2. Madonna Plaza located at 227 Madonna Road 3.2.1 Model Industrial Supply The Former Model Industrial Supply located at 331 Pacific Street has a documented release of PCE in 1965 (Cuesta Geotechnical, 2015). Significant concentrations of PCE have been detected on-site in groundwater up to 256 μg/L in 1992 in MW-1. Recent groundwater measurements and samples were collected in 2015 and showed a decrease in PCE concentrations from earlier 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -14 sampling but PCE concentrations are still greater than the MCL. Groundwater levels in this area tend to fluctuate and fall below the bottom of the monitoring well depths at the site. This presents a challenge for collecting groundwater data consistently and may explain the large data gap between measurements. This site is also located near the Madonna gap where the alluvium becomes shallower near the Madonna fault and the bedrock is elevated. PCE that migrated deeper into the alluvial aquifer from upgradient sources or elsewhere in the basin may come together in this area as it flows downgradient through the gap. 3.2.2 Former Madonna Plaza Dry Cleaner The Former Madonna Plaza Dry Cleaner (Madonna Plaza) is located at 227 Madonna Road in a shopping center that has a large parking lot in the center and numerous retail businesses. Chemical contaminants detected on-site have include PCE and TPH. The greatest concentrations of PCE detected at Madonna Plaza was 56 µg/L at MW-2R in August 2003. Groundwater and soil remediation was ordered by the RWQCB in 2005 in the source area of Madonna Plaza based on elevated PCE concentrations at MW-2R, located down-gradient of the identified source area. Soil remediation included excavation of approximately 4,500 cubic yards of impacted soil removed in 2002. Groundwater remediation included injection of approximately 8,900 gallons of potassium permanganate solution in 2006. The PCE concentration at MW-2R was 4.6 µg/L prior to RWQCB case closure in 2010. Notably, a RWQCB letter dated January 7, 2005, stated that “Investigation at the site has identified a shallow on-site source of PCE contaminated soil and groundwater, and up-gradient monitoring wells indicate there is an off-site contribution of PCE contaminated groundwater toward the site”. Although the site received RWQCB closure, further investigation near Madonna Plaza is warranted based on the central location of this site with respect to the larger PCE plume. 3.3 Data Gap Evaluation The following sections provide details on data gap evaluation. 3.3.1 PCE Plume Over Time Previous investigations have provided a robust data set which can be used to depict the PCE plume. To evaluate groundwater quality of the area, we have plotted historical data over time intervals to identify gaps in groundwater samples (herein data gaps) that may exist due to sporadic or unspecified data collection with respect to the larger PCE plume. In Section 3.2, the primary sites of concern were identified, along with those site considerations data gaps were assessed using the following criteria: • Sites with consistent PCE detections in groundwater based on historical investigations. • Sites with PCE concentration trends geospatially and with depth within certain aquifers from previous regional PCE studies. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -15 • Existing projects that were underway that may address certain data gap areas that can be leveraged to help close data gaps that are present for this project. Figure 3-1 depicts the PCE related sites from the EDR report that were evaluated to determine the conditions of the South SLO PCE Plume using available data. These sites were reviewed and cross-examined against information available on the respective databases. PCE detections in groundwater were identified during review and that data was used to generate a series of maps as listed below and shown on following pages. • Figure 3-2: PCE Concentrations in Groundwater from 1985-1994 • Figure 3-3: PCE Concentrations in Groundwater from 1995-1999 • Figure 3-4: PCE Concentrations in Groundwater from 2000-2004 • Figure 3-5: PCE Concentrations in Groundwater from 2005-2009 • Figure 3-6: PCE Concentrations in Groundwater from 2010-2014 • Figure 3-7: PCE Concentrations in Groundwater from 2015-2019 Figure 3-2 through Figure 3-7 presents PCE concentration in groundwater at evaluated sites in a ten-year interval from 1985 through 1994, and then five-year intervals from 1995 through 2019. The PCE concentrations shown on these figures are PCE concentrations with respect to the PCE MCL. The RWQCB was active in investigating sites that had potential for PCE contamination in the late 80’s to early 90’s which resulted in several monitoring wells sampled for PCE at various sites with the majority of the wells located at sites south of the intersection of Marsh Street and Higuera Street down to Higuera Street and Bridge Street (Figure 3-1). Several wells as far south as Los Osos Valley Road and South Higuera Street showed elevated concentrations of PCE. However, wells upgradient also show elevated PCE concentrations possibly indicating another potential source or sources in the area (Figure 3-4). From 1995 through 1999 (Figure 3-3), sites were investigated along Higuera Street (Model Industrial Supply site), Buchon Street (Mitchell Park Well), and Los Osos Valley Road (Pacific Beach 1 and Fire Station 4 Wells) where wells along Higuera Street had PCE detections. Wells along Buchon Street and Los Osos Valley Road had no detections and appear to be upgradient of the PCE plume (Figure 3-3). From 2000 through 2004 (Figure 3-4), several new sites were investigated for PCE related groundwater or soil impacts including several sites near the borders of the then understood PCE plume limits and other sites outside of the PCE plume. The former Monterey Motors had several groundwater wells with PCE concentrations above the MCL (Figure 3-4). From 2005 through 2009 (Figure 3-5), most of the sites investigated were located within the then understood PCE plume limits outlined by QORE Property Sciences (QPS, 2005). From 2010 thorough 2019 (Figure 3-6 and Figure 3-7), PCE plume related sampling was well distributed throughout the Basin but limited in the total number of samples compared to previous decades. The site located at 775 Foothill Blvd consistently had PCE detections greater than the MCL from 2000 until 2014 and is located north of downtown San Luis Obispo. In addition, there 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -16 was another detection above the MCL at the Model Industrial Supply site after more than a decade had passed since sampling last occurred at the site. PCE sampling in the last decade is sparse and data gaps exist in relation to the three Sites of Concern listed in Section 3.2. This space intentionally blank. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -17 Figure 3-2 Groundwater PCE Concentrations Site Investigation from 1985 to 1994 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -18 Figure 3-3 Groundwater PCE Concentrations Site Investigation from 1995 to 1999 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -19 Figure 3-4 Groundwater PCE Concentrations Site Investigation from 2000 to 2004 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -20 Figure 3-5 Groundwater PCE Concentrations Site Investigation from 2005 to 2009 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -21 Figure 3-6 Groundwater PCE Concentrations Site Investigation from 2010 to 2014 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -22 Figure 3-7 Groundwater PCE Concentrations Site Investigation from 2015 to 2019 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3-23 3.3.2 Existing Wells Key existing production wells are listed below in Table 3-2 and on Figure 3-8. Generally, the public wells and irrigation wells listed in Table 3-2 are screened in either the alluvial aquifer and/or the Paso Robles Aquifer which is the primary drinking water aquifer for the San Luis Obispo region. Table 3-2 Existing Production Wells Well Name Well Depth (feet bgs) Screen Interval (feet bgs) Approximate Elevation (amsl) Border Patrol Well 61 Not Available 119 Pacific Beach #1 Well 130 40–- 130 130 Corp Yard Well 70 50–- 70 128 Mitchell Park Well 48 28–- 48 216 Fire Station #4 Well 125 55–- 125 140 Jack House Well 52 32–- 52 187 SLO WWTP Monitoring Well 3 18 Not Available 131 Highway 101 Well 135 45–- 80; 110–- 135 120 San Luis Ranch Well 1 120 Not Available 121 San Luis Ranch Well 2 60 Not Available 135 San Luis Ranch Well 5 80 Not Available 129 IOOF Cemetery Well Not Available Not Available 152 Pesquini Well Not Available Not Available 147 Meisnner Well Not Available Not Available 135 Kennedy Fitness Well Not Available Not Available 130 Avila Ranch Well Not Available Not Available 113 Lockheed Martin Well Not Available Not Available 112 Kaiser Sand and Gravel Well Not Available Not Available 118 Toyota Well 175 60–- 120; 140–- 175 114 Notes: SLO San Luis Obispo bgs below ground surface amsl above mean sea level 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -24 Cross sections depicting the Basin were previously prepared by GSI, Inc. and are included in Appendix D, Figures 1 and 2 for reference (GSI, 2019). These cross sections contain key wells including depiction of the well screens in the lower portions of the Basin where groundwater conditions are not well understood. The investigation program targeted collecting data from the lower portion of the Basin using a combination of existing wells and exploratory borings. Public wells located south of the Madonna Fault line are shown in Appendix D, Figure 1. This Basin becomes deeper southward and contains the alluvial, Paso Robles, and Pismo formations. The Highway 101 Well is the deepest public well with known screen interval information and ready accessibility. The first screen interval of the Highway 101 Well extends within the lower alluvial and upper Paso Robles sediments and the second screen interval extends within the lower Paso Robles sediments to bedrock. Testing of the Highway 101 Well should help determine if PCE is present in the deeper portion of the Basin and reduce the overall number of borings needed to obtain this information. This space intentionally blank. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -25 Figure 3-8 Existing Production Wells 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -26 3.4 PCE Plume Understanding Following RI/FS Work Plan Analysis 3.4.1 Summary of RI/FS Work Plan Findings During preparation of the RI/FS Work Plan, WSC reviewed data from 364 sites after compiling data from previous reports and from the EDR report (WSC, Inc., 2021). Of these 364 sites, many sites were eliminated that did not have documented occurrences of PCE groundwater contamination or were sites that stored chemicals but had no known associated spills, leaks, or releases. Of these 364 sites, 90 were flagged for review that were geographically widespread throughout the San Luis Obispo Valley Basin. After review of these sites, 17 were identified as having PCE in groundwater on or within proximity of the site and of these 17 sites, three Sites of Concern had substantial PCE concentrations exceeding 200 µg/L. PCE is a dense non-aqueous phase liquid (density > water) chemical compound and in large quantities and substantial concentrations, PCE may migrate down into deeper parts of the aquifer. The three Sites of Concern were noted due to the presence of elevated PCE concentrations. Several data gap areas exist primarily in the northern part of the study area; south of 775 Foothill Plaza where significantly high concentrations of PCE and other VOCs existed at one time in recent past or presently in groundwater. There is potential for PCE that originated from this site and others nearby that may have migrated downgradient into Stenner Creek, a tributary of San Luis Obispo Creek. The Sites of Concern located at 331 Pacific Street and 1440 Monterey Street have indicated significantly high concentrations of VOCs in recent past or presently in groundwater and each is located near San Luis Obispo Creek. In Figure 3-2 through Figure 3-7 most sites with PCE concentration greater than the MCL are located within the 100-year floodplain. Figure 3-9 illustrates the 100 and 500-year flood plains along with the estimated 2005 PCE Plume Delineation. In San Luis Obispo, there have been several major floods that have occurred with one being documented as a 150-year flooding event in 1973. There is a possibility that PCE contamination that was present in the soil or groundwater at various locations in significant concentrations may have been mobilized during these major flooding events. This space intentionally blank. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -27 Figure 3-9 2005 PCE Delineation and FEMA Flood Zones 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -28 3.4.2 PCE Plume Understanding The understanding of the PCE plume following the RI/FS Work Plan analysis indicates the plume has dispersed over time after leaving the suspected source area (Figure 3-10). The suspected source or sources of the PCE plume appear to be located south of Marsh Street and north of South Street, east of Highway 101. The source of the PCE has been attributed to several dry cleaners and power generation facilities that once existed in this area, see Sections 3.1 and 3.2 for a discussion of the database research on potential sources of PCE. These sites are currently undergoing or have undergone remedial clean-up efforts. Leaving the source area, the plume has passed through the narrow passageway between west and east South Hills where San Luis Creek flows north to south (Figure 3-9 and Figure 3-10). Most of the groundwater basin effected by the plume resides to the south of the narrow passage. Figure 3-10 illustrates the PCE plume based on data evaluated in the RI/FS Work Plan. Lateral limits of the PCE plume based on the 2005 QPS Report are also shown in the Figure 3-10. However, the data used to outline the approximate PCE plume delineation spans multiple years. To better characterize the PCE plume, a sampling program was developed to gather data over a shorter period of time. The sampling program is explained in Section 4.0 and includes exploratory borings and evaluation of existing wells. This space intentionally blank. 3.0 Environmental Data Review and Data Gap Evaluation Remedial Investigation Report City of San Luis Obispo | 3 -29 Figure 3-10 Project Area with Potential PCE Source Area and 2005 Plume 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4-1 4.0 Investigation Program This section discusses the field investigation activities completed as part of this work, which included well profiling and exploratory borings. The field investigations were completed to collect groundwater and soil data required to fill data gaps and characterize the PCE plume. This section provides the details of the work that was completed, but does not provide interpretation of the work, see Section 5.0 for findings. The objective of the PCE plume field investigation was to collect additional groundwater and soil data needed to characterize the plume. The groundwater and soil data w ere collected by completing an exploratory boring and testing program, conducting vertical water quality profiling in long-screen wells, and performing pumping tests at existing wells in the project area. Details of the field investigation are provided in the sections below. IN THIS SECTION • Proposed Investigation Activities Following the RI/FS Work Plan • Groundwater Exploration Borings • Evaluation of Existing Wells 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4 -2 4.1 Proposed Investigation Activities Following the RI/FS Work Plan The RI/FS Work Plan identified data gaps that are widespread throughout the San Luis Valley Subarea of the Basin due to limited sampling in prior characterization efforts. To fill these gaps, a data collection scheme was proposed in the RI/FS Work Plan. The RI/FS Work Plan proposed three primary methods to obtain additional information on water quality and PCE distribution across the basin. The methods recommended were vertical flow and chemistry profiling of four (4) existing wells; well testing of the Highway 101 Well; and exploratory borings and sampling. Section 5.0 presents the findings of the field investigation activities used to characterize the PCE plume. Investigation activities proposed in the RI/FS Work Plan and the actual work conducted is described in this section of the report. The RI/FS Work Plan was amended to manage increased exploratory boring costs associated with inflation and the need for sonic drilling to reach the deepest parts of the Basin. The amended changes are discussed below. (WSC, Inc., 2022) • Vertical Flow and Chemistry Profiling – A total of five existing wells, including the Highway 101 Well, were recommended for evaluation for vertical flow and chemical profiling to assist in the evaluation of vertical distribution of PCE. The RI/FS Work Plan was amended so that only four of the existing wells were profiled. Wells that were profiled along with rationale and methods are presented in Section 4.2.1. • Well Testing – The Highway 101 Well was recommended for hydraulic testing by conducting step-rate drawdown and constant-rate pumping tests to determine the hydrogeologic parameters of the area for use in the groundwater modeling, see Section 4.2.2 for details of this testing. • Exploratory Borings – The RI/FS Work Plan recommended a total of 34 exploratory borings to evaluate the current lateral and vertical extent of the PCE plume. Depth-discrete groundwater samples were collected in these borings to evaluate the horizontal and vertical extent of PCE impacts. Depth-to-water measurements were also recorded for each boring. Exploratory boring locations along with rationale and field methods are presented in Section 4.3.1. The cost of deep sonic borings, which were required at several boring locations where the thickness of the basin required borings greater than about 85- ft bgs, created budget constraints that only allowed borings at 30 of the 34 planned sites. As planned in the RI/FS Work Plan, the exploratory borings in combination with the other additional investigation methods will be used to site new monitoring wells. Budget constraints meant that monitoring wells were removed from this Project in a grant amendment; however, monitoring wells will be sited and installed in a subsequent implementation phase. 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4 -3 The results of the investigation activities should be used, in a subsequent implementation phase of the project, to site permanent monitoring wells for ongoing monitoring of the PCE plume. The results of the additional investigation along with monitoring results should also be used for future modeling to understand the fate and transport of the PCE plume. The following sections present the work conducted and Section 5.0 summarizes findings and additional recommendations to better understand the PCE plume. A separate Feasibility Study Report evaluates options for pump and treat wells to extract and treat the plume. 4.2 Evaluation of Existing Wells Testing of existing wells was conducted to collect additional PCE plume information and to better understand the PCE plume extent and hydrogeologic properties of the basin for modeling. Description of the additional investigation for the existing wells is provided below. 4.2.1 Well Profiling Four existing wells were profiled and depth-specific sampled to assist with characterizing the vertical distribution of the PCE plume. The selected wells are shown on Figure 4-1 and are listed below: • San Luis Ranch Well No. 2 (Ambient Profiling) (hereafter referred to as the San Luis Ranch Well) • CJAR Agricultural Reserve Well (Ambient Profiling) (hereafter the CJAR Ag Well) • Pacific Beach Well No. 1 (Ambient Profiling) (hereafter the Pac Beach Well or Pacific Beach Well) • Highway 101 Well (Ambient and Dynamic Profiling) These wells were selected based on their location relative to the Highway 101 Well and are expected to be within the existing PCE plume or on a key boundary. The Highway 101 Well and Pacific Beach Well are screened in the lower portion of the Basin and can help fill the data gap in the deeper part of the Basin. In addition, these wells are constructed with at least 40 feet of screen interval, which is required for vertical well profiling. Ambient profiling involves profiling the well during non-pumping static conditions. Highway 101 Well was also profiled under dynamic (pumping) conditions. The well is perforated within two formations and provided important information regarding the vertical distribution of PCE in the southwestern portion of San Luis Valley. This information is included in Section 5.1.1. Well casing video surveys for the above-mentioned wells were also completed as part of the well profiling activities. 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4 -4 4.2.1.1 Vertical Flow and Chemistry Profiling Vertical flow and chemistry profiling are a unique technology developed by BESST Inc. (BESST) which involves profiling the well during non-pumping static conditions. The method uses a dye tracer system developed by the U.S. Geological Survey that injects small quantities of diluted rhodamine dye solution into the well. The dye then moves with the hydraulic gradient within the well. A fluorometer (In-Situ Aqua Troll 600) is vertically situated to detect the dye once it is released into the well. The fluorometer is conjoined with the tracer injection tubing and positioned exactly 5 ft below the rhodamine injection nozzle. Operators are then able to measure the time it takes for the dye to travel from the injector to the sensor, which determines the velocity and direction of flow. This velocity data coupled with depth-dependent water quality data are used to calculate the chemical mass contribution at the depths investigated. Each sample interval associated with ambient and dynamic profiling was analyzed for VOCs by US EPA Method 524.2. In addition, samples collected from the Pacific Beach Well, Highway 101 Well, and San Luis Ranch Well No. 2 were analyzed for per- and poly fluorinated-alkyl (PFAS) substances by Method E537.1 (12 PFAS compounds). Sample collection, handling, and analysis methodologies are provided in the Quality Assurance Project Plan included as Appendix P. Figure 4-1 Ambient and Dynamic Flow Profiling Wells 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4-5 4.2.2 Well Hydraulic Testing The Highway 101 Well was identified for additional hydraulic testing. Hydraulic testing on the well included a step-rate drawdown and constant-rate test to determine hydraulic parameters, pumping conditions, and overall response, which will be included in later groundwater modeling and water resources planning, see Figure 4-2 for testing and observation well locations. The Highway 101 well was selected for hydraulic testing based on the following criteria: • The Highway 101 Well has sufficient space and an available connection to the City’s sewer collection system which allowed for on-site treatment to remove PCE from testing water. Other sites had limitations that precluded simple treatment and disposal of testing water. o At the City’s request, water produced during the Highway 101 well hydraulic testing was treated using granular activated carbon filters to remove PCE. Treated water was discharged to a nearby sanitary sewer system under the City’s NPDES permit. • Other nearby upgradient wells do not have the preferred well diameter and screen depths for an effective well test. • The Highway 101 Well is the existing production well candidate that could be equipped and integrated into the City’s drinking water system. 4.2.2.1 Step-Rate Drawdown Test The step-rate drawdown tests consisted of pumping the well at three incremental increasing rates and measuring the resultant drawdown. During the step-drawdown testing the well was pumped at 50%, 67%, and 83% of the estimated or historical well capacity (Table 4-1) until stable water level was observed. Refer to Section 5.2 for results. Table 4-1 Step-Rate Drawdown Pumping Rate Well Identification Estimated Pumping Rate 50% 67% 83% Highway 101 Well 300 150 200 250 Note: Flow rates are in gallons per minute. This space intentionally blank. 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4 -6 Figure 4-2 Pump Test Observation Wells 4.2.2.2 Constant-Rate Test After completion of the step-drawdown testing and recovery of water level in the Highway 101 Well, a 24-hour constant rate test was conducted. A pumping rate of 250 GPM was chosen for the 24-hr pump test based on the results from the step-rate drawdown test. Water discharged during the well testing underwent treatment and was discharged to the City’s sewer in accordance with discharge permit requirements. Both step-rate drawdown and constant-rate testing included water level and water parameter monitoring of the pumping well using a hand-held meter and an AquaTroll 200 sonde, which is a remote pressure, temperature, and conductivity sensing probe. See Section 5.2 for results. 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4 -7 4.3 Groundwater Exploration Borings A total of 30 exploratory borings were drilled and sampled to gather data to delineate the PCE plume conditions. In addition, depth-to-water data were measured and used to develop groundwater elevation contours for the project area. A regional view of the exploratory borings (B-01 through B-25, B-29, B-31 through B-34) is shown on Figure 4-3. Detailed locations showing approximate cross streets are shown on Figure 4-4 (B-01 through B-10), Figure 4-5 (B-11R through B-17), Figure 4-6 (B-18R through B-29), and Figure 4-7 (B-31 through B-34). Each exploratory location (B-01 through B-25, B-29, B-31 through B-34) consists of up to three borings to characterize soil hydrostratigraphy, collect depth-discrete groundwater samples, measure depth-to-water, and obtain soils samples to test soil for total organic carbon (TOC). Final boring depths, depth-to-water measurements, and sampling intervals are provided in Table 4-2. The sampling depths and drilling methods were chosen during preparation of the RI/FS Work Plan. Further description of sampling methods is discussed in Section 4.3.3. The exploratory borings were generally oriented in transect lines that cross perpendicular with groundwater flow direction in this portion of the San Luis Valley Subarea of the Basin (see Figure 2-2). A summary of the transects and their intended purposes are provided below: • B-1 through B-4: Evaluates hydrogeology and water quality downgradient of former Kimball Motors and upgradient of Model Industrial Supply. • B-5 through B-10: Evaluates hydrogeology and water quality downgradient of Model Industrial Supply and in the vicinity of the shallow depth to bedrock area. • B-11R through B-17: Evaluates hydrogeology and water quality in the upper core of the PCE plume and upgradient of Madonna Plaza. • B-18R, B-19 through B-25, B-29, and B-31: Evaluates hydrogeology and water quality near the center of the primary PCE plume and in the deeper section of the Basin. • B-32: Evaluates hydrogeology and water quality near the City’s former Auto Park Well and in the deeper section of the Basin. • B-33 and B-34: Evaluates hydrogeology and water quality in the southwestern portion of the PCE plume and in the deeper section of the Basin. The results of each transect provide a snapshot of lateral and vertical PCE distribution in specific areas of the San Luis Valley Subarea of the Basin with suspected PCE groundwater impacts. Vertical distribution of PCE impacts were measured by collecting a groundwater sample from multiple depths in each boring (Table 4-2). The resultant data provides vertical distribution of contaminants which combined with adjacent borings depicts PCE distribution along the transects. 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4 -8 4.3.1 Location Changes Exploratory groundwater borings were sited in City of San Luis Obispo right-of-way (e.g., streets, City owned property) with one location, B-12, in joint Caltrans and City right-of-way and another location, B-17, in Caltrans right-of-way. Drilling locations were finalized based on access to a specific location, permitting, and safety considerations. For locations that were changed (B-11 and B-18), the TAC was informed, and a Work Plan addendum was prepared and provided to the TAC (WSC, Inc., 2022). Borings B-11 and B-18 were relocated during the boring investigation, and the new locations were labeled B-11R and B-18R. Boring B-18 encountered bedrock at 11 ft bgs, and early results indicated the location of B-18 was outside the plume. Therefore, B-18 was relocated to Froom Ranch Way in the San Luis Ranch area as B-18R. It became part of the transect that includes B- 25, B-29, and B-31. Initial water quality results indicated that B-11 was outside the edge of the plume, so it was relocated as B-11R. The new location of B-11R was placed at Bridge Street, just east of BeeBee Street. The new boring location added a data point to the transect that includes B-14 to B-16 and helped locate the eastern extent of the PCE plume along Bridge Street and identify if there are other potential sources to the east of the main study area. This space intentionally blank. 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4-9 Table 4-2 Final Sampling Methods and Depths Boring Identification Location/Description Coordinates Direct Push Drilling Sonic Drilling Latitude Longitude Depth-to- Water Spring 2022 (feet bgs) Soil Sampling Groundwater Sampling Number of boreholes at each location Soil Sampling Groundwater Sampling Number of boreholes at each location Cone Penetrometer Drilling Total Depth (feet bgs) Continuous-Core Soil Sampling Drilling Total Depth (feet bgs) Sampling Depths (feet bgs) Continuous-Core Soil Sampling Drilling Total Depth (feet bgs) Sampling Depths (feet bgs) B-01 Dana Street 35.277267 -120.669396 21 53 -- 35, 44, 50 2 -- -- -- B-02 Higuera Street 35.276284 -120.668367 40 50 50 41, 50 3 -- -- -- B-03 Carmel Street 35.275890 -120.668080 31 58 -- 42, 48 2 -- -- -- B-04 Marsh Street 35.275612 -120.667645 14 47 -- 30, 41, 47 2 -- -- -- B-05 Bianchi Lane 35.272478 -120.670557 10 52 -- 33, 52 2 -- -- -- B-06 Bianchi Lane 35.272440 -120.670234 17 53 -- 37, 44, 51 2 -- -- -- B-07 Bianchi Lane 35.272452 -120.669886 16 51 -- 33, 38, 51 2 -- -- -- B-08 High Street 35.272141 -120.669469 6 48 48 37, 43, 48 3 -- -- -- B-09 High Street 35.272223 -120.668546 12 49 -- 19, 43, 49 2 -- -- -- B-10 High Street 35.272207 -120.667971 10 52 -- 42, 46, 52 2 -- -- -- B-11R Bridge Street 35.267670 -120.667756 25 58 58 46, 53, 58 3 -- -- -- B-12 Madonna Road 35.265230 -120.674845 12 57 -- 30, 36, 45, 54 2 -- -- -- B-13 Madonna Road 35.267142 -120.672137 22 69 -- 20, 36, 56, 63 2 -- -- -- B-14 Madonna Road 35.267998 -120.671053 26 53 -- 49, 52 2 -- -- -- B-15 Higuera Street 35.267693 -120.670342 11 55 55 38, 52, 55 3 -- -- -- B-16 Bridge Street 35.267529 -120.669588 6 57 -- 42, 48, 56 2 -- -- -- B-17 CalTrans Right-of-Way 35.263172 -120.674106 25 67 67 28, 49, 53, 64 3 -- -- -- B-18R Froom Ranch Way 35.256650 -120.678056 9 73 -- 34, 50, 58, 68 2 -- -- -- B-19 El Mercado 35.261557 -120.677223 16 51 -- 29, 43, 49 2 -- -- -- B-20 El Mercado 35.260627 -120.675801 18 65 -- 30, 52, 65 2 -- -- -- B-21 El Mercado 35.259395 -120.674163 13 57 57 32, 45, 50, 56 3 -- -- -- B-22 Prado Road 35.256498 -120.673503 30 64 -- 31, 40, 47, 52, 56 2 -- -- -- B-23 Prado Road 35.255653 -120.671779 20 63 -- 32 2 -- -- -- B-24 Prado Road 35.255172 -120.670586 16 66 66 36, 55, 63 3 -- -- -- B-25 Parkview Place 35.257131 -120.681418 15 -- -- -- -- 68 18, 27, 38, 57 2 B-29 Unnamed City of SLO Right-of-Way 35.253612 -120.675557 15 -- -- -- -- 83 18, 56, 62, 71 2 B-31 Zaca Lane 35.250949 -120.672195 18 -- -- -- -- 95 37, 53, 59, 74, 83 2 B-32 Auto Park Way 35.250788 -120.683400 36 -- -- -- -- 117 47, 60, 68, 73, 84, 105, 116 2 B-33 Los Osos Valley Road 35.242361 -120.679407 18 45 45 18, 42 3 -- -- -- B-34 South Higuera Street 35.241446 -120.676878 24 52 -- 24, 34, 51 2 -- -- -- Notes: “–” = not applicable Boring ID “_R” = relocated boring, see Section 4.3.1 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4 -10 Figure 4-3 Final Exploratory Groundwater Boring Locations 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4 -11 Figure 4-4 Exploratory Groundwater Boring Locations B-01 Through B-10 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4 -12 Figure 4-5 Exploratory Groundwater Boring Locations B-11R Through B-17 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4 -13 Figure 4-6 Exploratory Groundwater Boring Locations B-18R Through B-29 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4 -14 Figure 4-7 Exploratory Groundwater Boring Locations B-31 Through B-34 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4-15 4.3.2 Pre-Drilling Activities The following tasks were performed prior to initiating drilling activities related to the exploratory soil borings: • Obtained City Council approval to advertise the boring work and advertise the boring work for compentitive bidding. • Obtained soil boring drilling permits from the County of San Luis Obispo – Environmental Health Services. • Obtained encroachment permit and temporary traffic control approval from the City of San Luis Obispo Public Works Department. • Obtained encroachment permit and temporary traffic control approval from Caltrans. • Notified the TAC prior to starting field activities. • Contacted Underground Service Alert (USA) North 811 prior to drilling soil borings. • Retained a private underground utility locator to assist in the clearance of the proposed soil boring locations. The proposed soil boring locations were modified accordingly to avoid underground structures. • Prepared a Health and Safety Plan (HASP), as necessary, to cover the proposed soil boring activities. The HASP addressed the potential for exposure to hazardous constituents, as well as delineated the general safety procedures that were required for the safe operation of mechanical equipment used while conducting field operations. 4.3.3 Groundwater Exploratory Boring Drilling and Sampling Activities Concrete or Asphalt Concrete Coring – Coring was conducted to penetrate the concrete or asphalt surface to access the soil at each boring location. The asphalt/concrete coring process advanced a three-inch diameter cutter through the asphalt/concrete. The core was considered complete after the core was removed, and native soil or base fill was found beneath the asphalt/concrete. Drilling and Soil Logging – Each exploratory boring was hand augured to a depth of approximately 5 to 6 feet bgs as an additional precautionary method to avoid subsurface utilities or infrastructure. A total of 30 exploratory boring locations (B-01 through B-25, B-29, B-31 through B-34) were drilled, sampled, and logged. Drilling Methods – A total of 26 direct-push drilled boring locations and four (4) sonic drilling locations were completed for this Project. A summary of final drilling and sampling depths are shown in Table 4-2. Drilling and sampling details are outlined below. Each boring (direct-push or sonic drilled) was abandoned in accordance with State of California, Department of Water Resources, California Well Standards Bulletin 74-90 (Supplement to Bulletin 74-81). 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4-16 4.3.3.1 Direct Push Drilling Direct-Push Drilling Boring Locations (B-01 through B-24 and B-33, B-34). • Cone-Penetrometer boring at each location. • Groundwater sample boring at each location (multiple depths). • Continuous core soil sample boring for targeted soil testing (see Table 4-2 for locations). Direct-Push Drilling – Direct-push drilling technology “pushes” soil sampling tools and sensors (soil probes) into the ground without the use of auger drilling to remove soil to make a path for the tool. Direct push soil sampling tools or soil probes are advanced as far as possible using only the static weight of the carrier vehicle. Percussion is applied as required when advancing soil probes through sands, gravels, hard pans, high friction clays, tills, and fill materials. Cone Penetrometer – A cone penetrometer test (CPT) advanced with a direct-push drilling rig was conducted at CPT locations (Table 4-2) to characterize soil stratigraphy. The MARL 30-ton CPT drill rig and data collection unit was capable of measuring tip resistance, sleeve resistance, and pore water pressure in accordance with ASTM Standard Test Method for Electronic Cone and Piezocone Penetration Testing of Soils (ASTM D 5778-12). Depth-Discrete Groundwater Sampling – Upon completion of the CPT test and/or continuous core soil sample, the soil stratigraphy data was reviewed to determine target groundwater sample depths. Once the groundwater sample depths were established, the driller moved the drill rig to an adjacent location (approximately 5 to 20 feet) to drill a separate boring for depth-discrete groundwater sampling. Depth-discrete groundwater sampling was conducted using a sampler that is exposed only to the target sampling depth by use of a closed screen sampler assembly (e.g., dual-tube/wall samplers, Hydropunch™, SimulProbe®). Continuous-Core Sampling – At select locations (Table 4-2) a continuously cored soil sample was collected using a Macrocore MC5 dual-wall system with a 2.25-inch diameter, as needed, and clear plastic sleeve in general accordance with ASTM Standard Guide For Direct Push Soil Sampling for Environmental Site Characterizations (ASTM D6282). 4.3.3.2 Sonic Drilling Sonic Drilling Boring Locations (B-25, B-29, B-31, and B-32). • Sonic drilling was used where boring depths were expected to exceed about 85-ft bgs. • Continuous core soil sample boring at each location for targeted soils testing. • Groundwater sample boring at each location (multiple depths). Sonic Drilling – Sonic drill rigs feature a sonic head with oscillators that generate a range of frequencies. The vibrations generated by the oscillators transmit high-frequency, resonant sonic energy throughout a drill string, which causes the surrounding material to fluidize and creates a frictionless environment. Once fluidization begins to occur, very rapid penetration rates are possible and core barrel or casings can be efficiently advanced into subsurface formations. A 4.0 Investigation Program Remedial Investigation Report City of San Luis Obispo | 4-17 Fraste Eijkelkamp Sonic FS 250 drill rig, equipped with a 6-inch diameter steel drill string was used for this Project. Continuous-Core Sampling – At sonic drilling locations, continuously cored soil samples were collected by a 4-inch diameter steel core barrel advancement method to the depths shown in Table 4-2. The core barrel was advanced to the target depth allowing soil samples to be collected continuously in plastic bags to be inspected at the surface. Depth-Discrete Groundwater Sampling – Upon completion of the continuous core soil sample, the soil stratigraphy data was reviewed to determine the target groundwater sample depths. Once the groundwater sample depths were established, the driller moved the drill rig to an adjacent location (approximately 5 to 20 feet) to drill a separate boring for depth-discrete groundwater sampling. Depth-discrete groundwater sampling was conducted using a sampler that is exposed only to the target sampling depth by use of a closed screen sampler assembly (e.g., dual-tube/wall samplers, Hydropunch™, SimulProbe®). 4.3.3.3 Sample Collection, Handling, and Analysis Upon retrieval, soil cores were field screened for VOCs using a photoionization detector (PID) and examined for soil classification as described below. Soil samples were collected for soil classification and for the purposes of selecting groundwater sample intervals. Soil was logged in the field in accordance with the Unified Soils Classification System. Soil classification logs from the selected borings are provided in Appendix O. Sample Preservation and Transportation – Individual samples were labeled by location, sample depth, date, and time, packaged securely in an ice-filled cooler as required by the laboratory requirements and analytic methods, and transported to FGL following chain-of-custody procedures. A chain-of-custody document was prepared for all samples (Appendix M). Custody transfers of samples were recorded on the chain-of-custody form by signatures of the relinquisher and the receiver. This procedure was repeated until final delivery to the analytical laboratory. Soil Sample Laboratory Analysis – 10 soil samples were analyzed for total organic carbon (Walkley-Black method). Soil sample depths and results are presented in Table 5-3. The 10 sites were selected for soil testing in coordination with the RWQCB and were selected to sample a variety of depths and soil classifications. See Appendix L for soil sample analytical results. Groundwater Sample Laboratory Analysis – All groundwater samples were analyzed for VOCs by United States Environmental Protection Agency Method 8260B. Waste Management and Disposal – Wastes derived from field activities included soil cuttings and decontamination water. The decontamination water was placed and stored in 55-gallon drums next to the temporary treatment system, pending receipt of analytical results, which was used to determine proper disposal procedures. Soil cuttings were retrieved by Gregg Drilling and were transported off-site and disposed of in accordance with applicable regulations. Sample collection, handling, and analysis methodologies are provided in the Quality Assurance Project Plan included as Appendix P. 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5-1 5.0 Results and Findings This section provides the results of the investigation program, which consisted of vertical flow and chemistry profiling in existing wells, pump testing o f the Highway 101 Well, sampling of exploratory borings and interpretation of the results to characterize the PCE plume. IN THIS SECTION • Vertical Flow and Water Chemistry Profiling Data • Pumping Test Data • Exploratory Boring Investigation Results • Plume Characterization 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -2 5.1 Vertical Flow and Water Chemistry Profiling Data As discussed in Section 4.2, the Highway 101 Well, Pacific Beach Well, San Luis Ranch Well, and CJAR Ag Well were profiled for vertical flow and chemistry under ambient conditions. Vertical profiling under dynamic (pumping) conditions was also performed for the Highway 101 Well. Well locations are provided on Figure 5-1. Details of methods, calculations, results, and conclusions for each profiling event completed by BESST, Inc. are provided in Appendices H and I. 5.1.1 Highway 101 Well: Dynamic Profiling The dynamic flow profiling was conducted in the well by BESST on August 3, 2021 (prior to ending the 24-hour constant-rate pump test) at a pumping rate of approximately 230 GPM. Flow profiling was performed at nine depth intervals (45-50 ft BGS, 50-60 ft BGS, 60-70 ft BGS, 70-80 ft BGS, 80-85 ft BGS, 85-115 ft BGS, 115-125 ft BGS, 125-135 ft BGS, and 135-145 ft BGS). Two composite water samples were collected at the wellhead and depth-discrete samples were collected at 50, 60, 70, 80, 95, 115, and 125 ft BGS. The water samples were submitted to a state-certified testing laboratory and analyzed for PCE and TDS. The results of dynamic profiling show the dominant direction of flow was downward within the upper screen interval and upward within the lower screen interval. The zonal flow contribution was greatest (100 GPM or 44% of the total flow) from approximately 50-60 ft BGS within the upper screen interval. The range of flow contribution was 2.0 to 56.2 GPM per foot in the upper screen interval and zero to 3.45 GPM per foot in the lower screen interval. The combined average flow contribution of both screen intervals was 5.4 GPM per foot. Laboratory results for seven (7) depth-discrete water samples ranged from 3.2 to 5.6 μg/L for PCE. As shown on Figure 5-1, the highest concentrations of PCE were encountered in the deeper portions of the well. Concentrations of TDS ranged from 630 to 670 mg/L, which exceed the recommended secondary maximum contaminant level (SMCL) of 500 mg/L 6. The highest TDS concentration (670 mg/L) was encountered in the shallower portion of the well (i.e., 50-70 ft BGS). The average PCE concentration reported for two composite water samples collected at the wellhead was 6.5 μg/L which exceeds the MCL of 5.0 μg/L. The mass balanced results show that PCE concentrations were generally below the MCL of 5.0 μg/L at most of the discrete depths tested, except for the intervals from 80-85 ft BGS and 115-125 ft BGS, where PCE concentrations in water entering the well were estimated to be 17 μg/L and 5.4 μg/L, respectively. Additional 6 SMCLs are water quality regulations adopted by the State of California which establishes a guideline to assist public water systems in managing their drinking water for aesthetic considerations, such as taste, color, and odor. These contaminants are not considered to present a risk to human health. 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -3 Figure 5-1 Well Profiling PCE Results 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -4 analysis 7 performed by BESST showed that the concentration of PCE for the 80-85 ft BGS interval may be as high as 50 μg/L. According to BESST, the occurrence of elevated levels of PCE at these depths may be due to one or more of the following factors: (1) excessive PVC glue on the inner surface of well screen observed at 85 ft BGS and 115 ft BGS; (2) PVC pipe tape used on the bottom of the pump from 103-108 ft BGS; and (3) a drawdown effect where the hydraulic stresses that occur under pumping conditions strip PCE that is absorbed in a clayey unit under ambient conditions and mobilizes it from a shallower interval to a deeper interval. Sustained concentrations of PCE at these levels are not expected, therefore the analysis does not use these two data points when characterizing the plume. 5.1.2 Highway 101 Well: Ambient Profiling After completing the dynamic flow profiling, a steady-state non-pumping (ambient) profiling test was conducted in this well from August 4 through August 6, 2021. Water level in the well prior to starting the profiling was measured at approximately 10 ft BGS. The well consists of two screen intervals from 45 to 85 ft BGS and 115 to 135 ft BGS. Ambient flow profiling was conducted at five depth intervals: 45-50 ft BGS, 55-60 ft BGS, 65-70 ft BGS, 75-80 ft BGS, and 130-135 ft BGS. Flow profiling started at the deepest screen interval and progressed upward towards the shallowest interval. Depth-dependent water samples were collected, two within the blank casing at 35 and 45 ft BGS, and six within the screen intervals at 55, 65, 75, 120, and 130 ft BGS. All water samples were submitted to state-certified laboratories for analyses of VOCs, PFAS, and TDS. The results of the flow survey under ambient conditions indicate the dominant flow direction is downward within the well at a rate of 12 GPM. Approximately 80% of the total flow was estimated by BESST to originate within the upper screen interval from 45 to 85 ft BGS. The zonal flow results showed the main inflow into the well occurs from 45 to 75 ft BGS and the main outflow zones are from 75 to 85 ft BGS and 115 to 120 ft BGS. Laboratory analytical results of the groundwater samples indicated PCE was detected at all sampling depth intervals. PCE concentrations ranged from 1.1 to 3.9 μg/L (see Figure 5-1); the maximum concentration was detected in the sample collected at the deepest interval (130 ft BGS). In addition, seven of the twelve PFAS substances analyzed were detected; PFNA was only detected in the samples collected at 35 and 45 ft BGS. Concentrations of PFOS ranged from 0.004 to 0.031 μg/L and PFOA ranged from 0.003 to 0.005 μg/L. TDS concentrations ranged from 620 to 660 mg/L, above the SMCL of 500 mg/L. The standard mass balance procedure was used to estimate PCE, PFAS, and TDS concentrations within the formation materials from 55-65 ft BGS and 65-75 ft BGS. The mass balance result for PCE at the 65-75 ft BGS interval (zonal ambient flow of 0.636 GPM) was 7 A Monte Carlo simulation was used to provide the probabilities to model different outcomes of a process that is not easily predicted due to the intervention of a random variable. 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -5 estimated to be 4.5 μg/L. The estimated PCE value for the second interval (55-65 ft BGS) was 26.4 μg/L. According to BESST, this aberrant concentration could be due to either a bias associated with using the flow-weighting method for a zone with a low flow value (estimated flow for the interval was 0.01 GPM) or a result of a drawdown effect that was mentioned in the previous section for the dynamic flow profiling. Even though the PCE result for the 55-65 ft BGS interval is marked as an outlier, the result for the 65-75 ft BGS interval suggests this well will have continue to test for PCE. BESST provided recommendations to improve the water quality produced by the Highway 101 Well, including sealing off the bottom 5-feet of the upper and lower screen intervals using inflatable packers. In addition, a perforated section of pipe can be installed at the pump suction intake to help reduce the hydraulic stress imparted to the clay unit and reduce the stripping and mobilization of PCE under pumping conditions. Further testing is required prior to making final a recommendation for improvements to the well. 5.1.3 Pacific Beach Well Ambient flow and chemistry profiling was conducted in this well by BESST from August 9 through August 13, 2021. Static water level in the well was measured at 12 ft BGS. The well consists of a single screen interval from 40 to 130 ft BGS. Flow profiling was conducted at nine discrete depths within the screen interval. A total of nine (plus one duplicate) depth-discrete water samples were collected from 45 to 125 ft BGS. Samples were analyzed by state-certified analytical laboratories for VOCs, PFAS, and TDS. Results of the ambient flow profiling showed the flow rate was measured to be less than 1 GPM at each depth interval. This indicates there is no predominant flow direction within the well under ambient conditions. Laboratory results showed no detection of PCE for any of the depth-discrete samples collected during the profiling event (see Figure 5-1). One PFAS compound, perfluorobutanesulfonic acid (PFBS), was detected above the minimum reporting limit; however, the distribution of PFBS and zonal flow with depth showed no obvious trend in the well. Laboratory results for TDS were above the SMCL of 500 mg/L, ranging from 510 to 540 mg/L. The mass balanced result for 105 to 115 ft BGS showed no apparent change inflow-weighted concentrations from the laboratory results. 5.1.4 San Luis Ranch Well BESST conducted the ambient flow and chemistry profiling in this well from August 18 through August 26, 2021. Static water level in the well was measured at 18 ft BGS. Based on a video survey conducted on August 9, 2021, this well consists of a single screen interval from 23.2 to 70.7 ft BGS. Flow profiling was conducted at four discrete depths within the screen interval. A 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -6 total of three depth-discrete water samples were collected at 35, 45, and 50 ft BGS. Samples were analyzed by state-certified testing laboratories for VOCs, PFAS, and TDS. Results from the ambient flow profiling showed that the dominant direction of flow was upward at flow rates ranging from 0 to 7 GPM. BESST estimated that 100% of the total cumulative flow was derived from 35 to 55 ft BGS; however, some uncertainty remains for flow contribution at intervals that could not be quantified through the analysis. The ambient zonal flow results indicate that inflow into the well occurs from 35 to 45 ft BGS and 50 to 55 ft BGS (highest inflow at 7.2 GPM). The main outflow zones occurred at 30 to 35 ft BGS and 45 to 50 ft BGS. The ambient flow was considered as stationary for the depth interval of 55 to 60 ft BGS. Laboratory results of the ambient chemistry profiling indicated that detectable levels of PCE (and PFAS) are present throughout the screen interval of this well. The main contaminant of concern, PCE, was detected in each sample at concentrations ranging from 3.8 to 4.3 μg/L (Figure 5-1). Two major PFAS compounds, PFOA and PFOS, were detected above their respective reporting limit. PFOA exceeded the California response level of 10 ng/L at every investigated depth interval. TDS was reported to range from 660 to 670 mg/L, above the SMCL of 500 mg/L. Overall, there was no obvious trend pattern with depth in this well for these chemicals. The laboratory results for the depth-discrete water samples were not mass balanced. This was because the procedure requires at least two sequential ambient cumulative inflow values that can be paired with two sequential chemistry concentrations reported by the lab, which was not obtained from this profiling event. 5.1.5 CJAR Ag Well BESST performed the ambient profiling activities for this well from August 24 through August 26, 2021. Static water level in the well was measured at approximately 12 ft BGS. The well consists of one screen section which extends from 40 to 140 ft BGS; the bottom 7 feet of screen was observed in the video survey to be blocked off by sediment fill. Ambient flow profiling was conducted within the section of well screen at 55-60 ft BGS, 65-70 ft BGS, 75-80 ft BGS, 85-90 ft BGS, 95-100 ft BGS, 105-110 ft BGS, and 125-130 ft BGS. Depth-discrete water samples were collected at 45, 55, 65, 75, 85, 95, 105, 115, and 125 ft BGS. A duplicate water sample for QA/QC purposes was collected at 115 ft BGS. All samples were submitted to state-certified laboratories and analyzed for VOCs and TDS. The results of the flow survey under ambient conditions indicate the dominant flow direction is downward within the well at a rate ranging from 0.2 to 1.7 GPM. An estimated 71% of the total cumulative flow was derived from 45 to 55 ft BGS. The zonal flow results showed an inflow section from 45 to 75 ft BGS and an outflow section from 75 to 133 ft BGS. 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -7 See Figure 5-1, which shows PCE was reported to be above the MCL of 5 μg/L at each sampled depth interval, except for the samples collected at 55 ft BGS and 65 ft BGS. TDS concentrations ranged from 610 to 630 mg/L, which are all above the SMCL of 500 mg/L. Inflow PCE concentrations were mass balanced for the intervals of 45 to 55 ft BGS, 55 to 65 ft BGS, and 65 to 75 ft BGS. Within the inflow interval (45 to 75 ft BGS), mass balanced PCE concentrations ranged from 4.1 to 16.0 μg/L. It should be noted that according to BESST, the highest PCE concentration of 16.0 μg/L from 55 to 65 ft BGS was likely due to a mass balance calculation bias at which the zonal flow value used was so small that the estimated concentration was amplified. 5.2 Pumping Test Data Performance testing was conducted on the Highway 101 Well to calculate hydraulic properties of the aquifer and estimate the radius of hydraulic influence when the well is pumped. Pump test activities were performed by BESST from August 12 through September 3, 2021. The pumping tests included an 8-hour step-rate test and a 24-hour constant-rate test. For both tests, a 6-inch diameter Grundfos submersible was installed in the well with the intake set at 105 ft BGS. A pressure transducer was installed in the well at 60 ft BGS and used to measure pumping water levels during both tests. Water levels were measured in two nearby observations wells (i.e., Border Patrol MW and SLO WWTF MW) during the 24-hr constant-rate test. A water level recovery test was completed in the Highway 101 Well immediately following the end of the constant-rate test. 5.2.1 8-hr Step-Rate Pump Test Prior to commencing the step-rate test, the static water level in the Highway 101 Well was measured at 11.20 ft BGS. The 8-hour test was commenced on August 31, 2021, at 8:00 p.m. The pumping water level was measured at 16 ft BGS within a minute after starting the test, and it continued downward throughout the test at a rate of 0.06 ft/min. Steps were completed in order of increased pumping rate and included average rates of 150, 200, and 250 GPM. The step-rate test concluded on 9/01/2021 at 04:00 a.m. Full results are provided in Appendix H and summarized below in Table 5-1. This space intentionally blank. 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5-8 Table 5-1 Results of 8-hr Step-Rate Test Step Number Discharge Rate (GPM) Incremental Drawdown (feet) Cumulative Drawdown (feet) Specific Capacity (GPM/foot) 1 150 6.6 6.6 22.7 2 200 1.7 8.3 24.1 3 250 2.1 10.4 24.0 Specific capacity is defined as the ratio of a sustained pumping rate to the drawdown required to yield that rate. It is typically expressed in units of GPM/ft of drawdown and is a useful index of well performance. As shown in Table 5-1, the specific capacity calculated for the three steps were similar. The results of the step-rate test were used to select the rate used for the 24-hr constant- rate pump test. 5.2.2 24-hr Constant-rate Pumping and Water Level Recovery Tests A 24-hour constant-rate test was conducted for the Highway 101 Well from September 1-2, 2021, at an average pumping rate of 250 GPM. During the constant-rate test and a 3-hour recovery period immediately following, water levels were monitored in the Highway 101 Well using an electronic sounder (manual measurements) and a downhole pressure transducer. Manual measurements of water levels were also collected in two vicinity observation wells (Border Patrol MW and SLO WWTF MW) during both the constant-rate test and water level recovery test. Details of the constant-rate pumping test and water level recovery test are summarized below in Table 5-2. Table 5-2 Results of 24-hr Constant-Rate Pump Test and Water Level Recovery Test Well Name Approximate Distance from Pumping Well Static Water Level (ft BGS) Max. Pumping Water Level (ft BGS) Total Cumulative Drawdown (feet) Water Level Recovery (%) Highway 101 - 11.0* 22.2 11.2 100 Border Patrol MW 580 13.1 14.8 1.7 100 SLO WWTF MW 1,350 20.58 20.81 0.23 100 * Inferred from the static level measured before commencing the 8-hr step-rate pump test on 8/31/2021. 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5-9 As shown in the table above, the water level in the two observation wells appears to have been affected after 24 hours of pumping the Highway 101 Well. Transmissivity (T) represents the volume of water that can be transmitted horizontally through a thickness of an aquifer under a hydraulic gradient equal to one (1). Transmissivity can be reported in units of gallons per day per foot (gpd/ft). Transmissivity of the aquifer that the Highway 101 Well produces groundwater was calculated using the drawdown data collected from the 24-hour constant-rate pumping test. The Jacob’s Straight-Line method applies the ratio of distance from the pumping well to the cumulative total drawdown measured in an observation well. This “distance-drawdown” ratio can be used to calculate transmissivity as follows. (Cooper & Jacob, 1964) 𝑇𝑇=528𝑄𝑄∆𝑠𝑠 Where: T = transmissivity (gpd/ft) Q = pumping rate (gpm) ∆𝑠𝑠 = slope of distance-drawdown graph expressed as the change in drawdown in feet, between any two values of distance on the log scale with a ratio of 10. Drawdown data for the two observation wells were plotted on a graph along with the distances from the Highway 101 Well (i.e., pumped well). A straight line was drawn through the two points and the slope of the line was used to estimate the change in drawdown, as shown on Figure 5-2. Analysis of data obtained from the pumping test and the distance-drawdown graph yields an estimated transmissivity of 62,857 gpd/day, which approximates the estimate of 60,000 gpd/ft from another 24-hour constant-rate test performed on the well in 2017 (Appendix H). This space intentionally blank. 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -10 Figure 5-2 Estimation of Aquifer Transmissivity from 24-hr Constant-Rate Pump Test Data 5.3 Exploratory Boring Investigation Results The data collected from 30 exploratory borings (26 via CPT method and 4 via sonic drilling) completed for this investigation and available drilling and construction records for an existing water well (San Luis Ranch Well No. 2) were used to interpret the primary geologic units which comprise the alluvial aquifer system in the project area. Three geologic cross section transects were developed to illustrate these units in profile. The locations of the exploratory borings and cross section transect lines are shown on Figure 5-3. Geologic cross sections A-A’, B-B’, and C- C’ are provided on Figure 5-4, Figure 5-5, and Figure 5-6, respectively. The CPT borings are included in the cross sections and show the interpreted borehole lithology in profile. A report prepared by Gregg Drilling which provides the CPT test data and interpretations is provided in Appendix N. Soil classification logs for eight exploratory borings (4 CPT boring locations with soil cores and 4 sonic borings) were prepared by Cleath-Harris Geologist and are provided in Appendix O. 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -11 As shown in the referenced cross sections, the basin sediments which comprise the aquifer system generally consist of relatively thick sequences of clay, sand/silt, and gravels that are underlain by bedrock (primarily rocks of the Franciscan Complex mélange). Also shown are the PCE concentrations reported for the depth-discrete groundwater samples collected in the exploratory borings. These results, along with the apparent distribution of detected PCE used to develop an updated delineation of the plume within the project area, is discussed below. 5.3.1 Soil Analytical Data At the request of the RWQCB, selected samples of continuous soil cores obtained from B-02, B- 08, B-15, B-21, B-24, B-29, B-32, and B-33 were submitted to FGL and analyzed for total organic carbon (TOC). The highest level of TOC (18,000 mg/kg) was detected in a sample representative of 18 ft BGS collected from B-33. Reported concentrations of TOC for all other samples analyzed ranged from 330 to 2,900 mg/kg. The analysis for TOC provides a general indicator of the approximate level of organic contamination in the sediments which compose the aquifer in the project area, this information can be used during fate and transport modeling to aid selection of what would otherwise be assumed soil properties. Table 5-3 summarizes the results of TOC for the soil samples collected from the exploratory borings. See Appendix L for the laboratory results. 5.3.2 Groundwater Analytical Data A minimum of two and up to seven depth-discrete groundwater samples were collected from each of the 30 exploratory borings and analyzed by FGL or Zalco Laboratories 8 for VOC’s, including PCE. PCE was detected in 14 of the borings 9. The reported concentrations ranged from 1.0 to 21 μg/L; the MCL of 5.0 μg/L for PCE was exceeded in five of the borings. The maximum concentrations of PCE detected in the exploratory borings are shown on Figure 5-7. See Appendix M for the laboratory results. 8 Zalco Laboratories analyzed samples from B-11R and B-18R on behalf of FGL. 9 The minimum concentration that could be detected depends on the laboratory and the sample. FGL uses a practical quantitation limit of 0.5 μg/L for undiluted samples and 1.0 μg/L for diluted samples. Zalco Laboratories uses a method detection limit of 0.45 μg/L. This space intentionally blank. 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -12 Figure 5-3 Cross Section Transect Lines Map 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -13 Figure 5-4 Cross Section A-A' 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -14 Figure 5-5 Cross Section B-B' 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -15 Figure 5-6 Cross Section C-C' 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -16 Table 5-3 Summary of Testing Results for Groundwater and Soil Samples 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -17 Table 5-3 (Continued) 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -18 Table 5-3 (Continued) 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -19 Figure 5-7 Maximum PCE Concentration at Borings and Wells 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -20 5.3.3 Groundwater Elevations, Flow Direction, and Gradient A groundwater elevation contour map representing water levels within the project area in March- April 2022 was prepared for this report and is presented as Figure 5-8. The data used for the map were collected from the exploratory borings conducted for this remedial investigation. The borings were in the Recent Alluvium formation and had a total depth that ranged from 45 to 73 feet bgs. See Table 4-2 for the data obtained during the boring investigation. As shown on Figure 5-8, groundwater elevations range from a high of about 156 feet above mean sea level (amsl) in the northern portion of the project area, to a low of about 87 feet amsl in the southern portion. The direction of groundwater flow generally follows the current path of San Luis Creek, from north to south. The groundwater gradient is approximately 0.004 foot per foot (vertical to horizontal). The accuracy of the groundwater contours is limited by the boring methods used to gather the depth to groundwater data. Additional groundwater contour data can be obtained in the future using the proposed monitoring well network. Limitations in the data are noted on Figure 5-8. 5.4 PCE Plume Characterization The data obtained from the chemistry profiling and the exploratory boreholes were used to estimate the location of the PCE plume (Figure 5-9). The vertical and horizontal extents of the plume equate to groundwater with concentrations of PCE detected at or above the laboratory reporting limit of 0.5 μg/L. Lines of equal PCE concentrations, at 1 μg/L, 5 μg/L, and 10 μg/L, were manually drawn using the minimum curvature interpolation method to determine the horizontal extent. This method tends to spread out the lines of equal concentration, especially at the edges of the available data, and may make the plume appear to be larger than it is. This conservative method of analysis was applied to avoid concern that the size of the PCE plume may have been estimated too small. As can be seen on the geologic cross sections (Figures 5-4 through 5-6) and Table 5-3, PCE was detected in the exploratory borings at multiple depths, ranging from 19 to 84 feet bgs. The highest concentrations of PCE were detected in the deepest water samples collected in the borings with shallower sample locations tending to have lower concentrations of PCE than the deeper sample locations. This indicates the PCE plume is present vertically within and throughout the Recent Alluvium formation. As shown on Figure 5-10, the horizontal extent of the PCE plume determined from this remedial investigation generally agrees with the one published in 2005. Also, both show that this appears to be a single PCE plume which extends downgradient from the area with the highest PCE levels (vicinity of the intersection of Walker Street and High Street). The main difference appears to be associated with some areas where low concentrations are supported by only a single data point (e.g., exploratory boring, etc.), and these may or may not be drawn as contaminated zones by 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -21 one method or the other10. Another explanation for the difference between the PCE plume extent previously published and the one developed through the analyses of this investigation is the time frame of the data used. The previous delineation of the plume boundary was developed using data from multiple sources and derived prior to 2005; the analyses performed for this investigation specifically utilized data collected in 2021. 5.4.1 Limitations The plume extents that were developed through the analyses of this remedial investigation represent the maximum PCE concentrations of water samples collected in the exploratory borings and existing wells. Uncertainty in the estimates exist and are inherent to the procedures used; furthermore, the data collected is only a set of samples in the larger basin aquifer. Factors which were too complex to consider for this investigation included:  Hydrogeology, such as plume transport, adsorption/advection, variations in depth, or seasonal fluctuations;  Changes in concentrations at wells not sampled for this investigation but may have been included in previous plume characterization investigations; and  Accuracy limitations in groundwater sampling and or the analytical processing performed by the laboratories. 5.4.2 Summary The shape and horizontal extent of the PCE plume that was developed by this remedial investigation is similar to the one previously published by QORE in 2005, though slightly smaller. The chemical characteristics of PCE combined with the hydrogeologic and hydraulic influences are too complex to develop a more precise delineation of the plume within the scope of this investigation. WSC and those who performed the field work followed best practices in its methodologies and interpretations. 10 The lateral extent of the PCE plume published in 2005 was estimated using a three-dimensional contaminant transport and limited biodegradation model. This space intentionally blank. 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -22 Figure 5-8 Groundwater Elevation Contours in the Project Area (Spring 2022) 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -23 Figure 5-9 Map of PCE Concentration Contours 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | 5 -24 Figure 5-10 Comparison of 2005 and 2022 PCE Plume Boundary Delineations 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | REF-1 REFERENCES CH2M. (1992). PG&E South San Luis Obispo Groundwater Investigation. CH2M Hill. CIRRUS Environmental. (1995a). Phase II Investigation Results, 236 Higuera Street. CIRRUS Environmental. (1995b). PCE Contamination Assessment, 236 Higuera Street. Cleath-Harris Geologists. (2019). Groundwater Flow Analysis Recycled Water Recharge Project San Luis Valley Sub-Area San Luis Obispo Valley Groundwater Basin. Cooper, H. H., & Jacob, C. E. (1964). A Generalized Graphical Method for Evaluating Formation Constants and Summarizing Well-field History. Transactions of the American Geophysical Union, 27:526-34. Cuesta Geotechnical. (2015). 1st Quarter 2015 Groundwater Monitoring, 331 Pacific Street. GSI Water Solutions. (2019). San Luis Obispo Valley Basin Characterization and Monitoring Well Installation. PW Environmental. (1995). Soil and Groundwater Investigation Report, 1330 Monterey Street. PW Environmental. (1996). Soil and Groundwater Investigation Report, 1330 Monterey Street. QPS. (2005). DRAFT Background Study South San Luis Obispo Groundwater PCE Plume. QORE Property Sciences (QPS). SEACOR. (1993). Results of Monitoring Well Installation and Sampling, 214 Higuera Street. Stantec. (2014). Corrective Action Plan for Soil and Groundwater, 1144 Monterey Street. SWRCB. (2017). Groundwater Information Sheet - Tetrachloroethylene (PCE). State Water Resources Control Board, Division of Water Quality, GAMA Program. United States Environmental Protection Agency. (2022, 11 03). PFAS Explained. Retrieved from https://www.epa.gov/pfas/pfas-explained URS. (2013). Final Investigation Report: San Luis Obispo PCE Groundwater Plume. URS. (2015). Investigation Report: San Luis Obispo PCE Groundwater Plume. WSC. (2022). Draft Remedial Investigation Report for the City of San Luis Obispo PCE Plume Characterization Project. WSC et al. (2019a). Draft Groundwater Sustainability Plan Chapter 3 - Description of Plan Area and Chapter 4 - Basin Setting. Water Systems Consulting, Inc.; GEI consultants, Cleath- Harris Geologists, Inc.; Stillwater Sciences, GSI Water Solutions Inc. 5.0 Results and Findings Remedial Investigation Report City of San Luis Obispo | REF-2 WSC et al. (2021). San Luis Obispo Valley Basin Groundwater Sustainbility Plan. Water Systems Consulting, Inc.; GEI consultants, Cleath-Harris Geologists, Inc.; Stillwater Sciences, GSI Water Solutions Inc. WSC, Inc. (2021). Proposition 1 Planning Grant PCE Plume Characterization Remedial Investigation Feasibility Study Work Plan. WSC, Inc. (2022). Feasibility Study Report - City of SLO PCE Plume Characterization Project. San Luis Obispo. WSC, Inc. (2022). RI/FS Work Plan Update Technical Memorandum dated 5/27/2022. This space intentionally blank. Basin Setting Figures Remedial Investigation Report City of San Luis Obispo | A Appendix A Basin Setting Figures A Previous Basin Investigation Figures and Tables Remedial Investigation Report City of San Luis Obispo | B Appendix B Previous Basin Investigation Figures and Tables B Appendix B-1 2005 Background Study South San Luis Obispo Groundwater PCE Plume Appendix B-1, Figure 1 (QPS, 2005) Appendix B-2 2013 Final Investigation Report San Luis Obispo PCE Groundwater Plume Appendix B-2, Table 1 (URS, 2013) Appendix B-2, Table 1 (URS, 2013) Appendix B-2, Table 2 (URS, 2013) Appendix B-2, Table 2 (URS, 2013) Appendix B-2, Figure 1 (URS, 2013) Appendix B-2, Figure 2 (URS, 2013) Appendix B-2, Figure 3 (URS, 2013) Appendix B-2, Figure 4 (URS, 2013) Appendix B-2, Figure 5 (URS, 2013) Appendix B-2, Figure 6 (URS, 2013) Appendix B-2, Figure 7 (URS, 2013) Appendix B-2, Figure 8 (URS, 2013) Appendix B-3 2015 Investigation Report San Luis Obispo PCE Groundwater Plume Appendix B-3, Table 1 (URS, 2015) Appendix B-3, Figure 1 (URS, 2015) Appendix B-3, Figure 2 (URS, 2015) Appendix B-3, Figure 3 (URS, 2015) Appendix B-3, Figure 4 (URS, 2015) Appendix B-4 1991-1992 South San Luis Obispo PCE Groundwater Plume PG&E Former Manufactured Gas Plant Site Appendix B-4, Figure 1 (CH2M, 1992) Appendix B-4, Figure 2 (CH2M, 1992) Appendix B-5 1993 Results of Monitoring Well Installation and Sampling 214 Higuera Street Appendix B-5, Figure 1 (Seacor, 1993) Appendix B-6 2006 Annual Groundwater/Post Remediation Monitoring Results Former Kimball Motors Appendix B-6, Figure 1 (Secor, 2014) Appendix B-7 2014 Corrective Action Plan for Soil and Groundwater Former Kimball Motors Appendix B-7, Figure 1 (Stantec, 2014) Appendix B-8 2014 PCE Characterization at Dalidio Laguna Ranch Appendix B-8, Figure 1 (CHG, 2014) Table 1. Dalidio Ranch and Nearby Well Construction Info and PCE Sampling Results Well ID Elevation (feet amsl) Diameter (inches) Total Depth (feet) Static Water Level (feet btoc) PCE (µg/L) 1 121.145 12 120 10.5 1.80 2 134.589 12 60 23.58 8.10 3 134.436 UNK 66 UNK - 4 122.535 16 64 12.91 - 5 129.344 12 80 20.05 9.50 6 134 14 66 20 - 7 133.706 16 66 UNK - House 133.465 5 40 19.65 1.00 Corp Yard Well - - 70 - 1.3 CJAR City Farm Well - - 130 - 10.4 Appendix B-8, Table 1 (CHG, 2014) Appendix B-9 2015 Groundwater Monitoring 331 Pacific Street Table 1. 331 Pacific Street Historical Soil, Soil Gas, and Groundwater Sample Results Sample Type Sample Location/Well ID Date Groundwater Depth (Feet) PCE TCE Vinyl Chloride Soil Sample MW-1 @ 15 feet 3/6/1992 - 0.07 mg/kg - - MW-1 @ 20 feet 3/6/1992 - 0.5 mg/kg - - MW-2 @ 25 feet 9/24/1992 - ND - - MW-2 @ 30 feet 9/24/1992 - ND - - MW-3 @ 25 feet 9/24/1992 - ND - - MW-3 @ 30 feet 9/24/1992 - 0.006 mg/kg - - B-1 @ 5 feet 10/23/2017 - 0.142 mg/kg 0.00146J mg/kg ND SG-1 @ 5 feet 10/23/2017 - 0.00183J mg/kg 0.00105J mg/kg ND SG-2 @ 5 feet 10/23/2017 - 0.0734 mg/kg 0.00282J mg/kg ND SG-3 @ 5 Feet 10/23/2017 - 0.0933 mg/kg 0.000970J mg/kg ND Soil Gas Sample SG-1 @ 5 feet 11/1/2017 - 660 mg/kg ND ND SG-2 @ 5 feet 11/1/2017 - 49,000 mg/kg ND ND SG-3 @ 5 Feet 11/1/2017 - 58,000 mg/kg ND ND Groundwater Sample MW-1 1/16/2015 21.1 150 ug/L - - 1/11/1995 19.6 160 ug/L - - 10/10/1992 24 220 ug/L - - 3/20/1992 18 256 ug/L - - MW-2 1/16/2015 20.58 1.1 ug/L - - 1/11/1995 - - - - 9/25/1992 - 5.7 ug/L - - MW-3 1/16/2015 19.27 122 ug/L - - 1/11/1995 - - - - 9/25/1992 - 52 ug/L - - Appendix B-9, Table 1 (Cuesta Geotechnical, 2015) Appendix B-9, Figure 1 (Cuesta Geotechnical, 2015) Appendix B-10 2018-2019 Remedial Investigation Work Plan and Addendum Former Model Industrial Supply 331 Pacific Street Table 1. 331 Pacific Street Historical Soil, Soil Gas, and Groundwater Sample Results Sample Type Sample Location/Well ID Date Groundwater Depth (Feet) PCE TCE Vinyl Chloride Soil Sample MW-1 @ 15 feet 3/6/1992 - 0.07 mg/kg - - MW-1 @ 20 feet 3/6/1992 - 0.5 mg/kg - - MW-2 @ 25 feet 9/24/1992 - ND - - MW-2 @ 30 feet 9/24/1992 - ND - - MW-3 @ 25 feet 9/24/1992 - ND - - MW-3 @ 30 feet 9/24/1992 - 0.006 mg/kg - - B-1 @ 5 feet 10/23/2017 - 0.142 mg/kg 0.00146J mg/kg ND SG-1 @ 5 feet 10/23/2017 - 0.00183J mg/kg 0.00105J mg/kg ND SG-2 @ 5 feet 10/23/2017 - 0.0734 mg/kg 0.00282J mg/kg ND SG-3 @ 5 Feet 10/23/2017 - 0.0933 mg/kg 0.000970J mg/kg ND Soil Gas Sample SG-1 @ 5 feet 11/1/2017 - 660 mg/kg ND ND SG-2 @ 5 feet 11/1/2017 - 49,000 mg/kg ND ND SG-3 @ 5 Feet 11/1/2017 - 58,000 mg/kg ND ND Groundwater Sample MW-1 1/16/2015 21.1 150 ug/L - - 1/11/1995 19.6 160 ug/L - - 10/10/1992 24 220 ug/L - - 3/20/1992 18 256 ug/L - - MW-2 1/16/2015 20.58 1.1 ug/L - - 1/11/1995 - - - - 9/25/1992 - 5.7 ug/L - - MW-3 1/16/2015 19.27 122 ug/L - - 1/11/1995 - - - - 9/25/1992 - 52 ug/L - - Appendix B-10, Table 1 (Cuesta Geotechnical, 2018) Appendix B-10, Figure 1 (Cuesta Geotechnical, 2018) Appendix B-10, Figure 2 (Cuesta Geotechnical, 2018) Appendix B-10, Figure 3 (Cuesta Geotechnical, 2018) Appendix B-11 2019 Post-Remediation Groundwater Monitoring Former Kimball Motors Appendix B-11, Table 1 (Stantec, 2019) Environmental Data Resources Area and Corridor Report Remedial Investigation Report City of San Luis Obispo | C Appendix C Environmental Data Resources Area and Corridor Report C GSI Hydrogeology Cross Sections Remedial Investigation Report City of San Luis Obispo | D Appendix D GSI Hydrogeology Cross Sections D Appendix D, Figure 1 (GSI, 2019) Appendix D, Figure (GSI, 2019glossar) Submittals and Permits for Fieldwork Remedial Investigation Report City of San Luis Obispo | E Appendix E Submittals and Permits for Fieldwork E CALIFORNIA STATE TRANSPORTATION AGENCY GAVIN NEWSOM, Governor ENCROACHMENT PERMIT OFFICE 50 HIGUERA STREET | SAN LUIS OBISPO, CA 93401-5415 PHONE (805) 549-3152 | FAX (805) 549-3062 | TTY 711 http://www.dot.ca.gov/dist05 June 2, 2022 05-SLO-101-27.305/27.441 0522 6DP 0544 Gregg Drilling, LLC Attn: Brian Savela 2726 Walnut Avenue Signal Hill, CA 90755 Dear Mr. Savela: Attached is your approved encroachment permit. DO NOT BEGIN WORK UNTIL YOU HAVE FIRST READ THE PERMIT CAREFULLY AND COMPLETELY AND CONTACTED THE STATE INSPECTOR LISTED ON YOUR PERMIT. This permit is a legal and binding contract once work on it has begun. You are subject to the provisions contained in the permit and in the attached Encroachment Permit General Provisions. If there is any question regarding interpretation of any detail in the permit or the General Provisions, you may contact the inspector listed on your permit or our office at (805) 549-3152. Thank you in advance for your cooperation. Pursuant to the Executive Department, State of California, Proclamation of a State of Emergency, signed on October 27, 2019, and under the direction of the Office of Emergency Services and the State Emergency Plan, work authorized by this permit will be suspended when a planned Public Safety Power Shutoff (PSPS) notification is in effect. Unless Permittee has obtained special approval from the Director of Caltrans or his assigns to work during a PSPS event, Permittee must stop work and make all traveled ways and roadsides safe for public travel and emergency services if notified by the Director of Caltrans or his assigns. Sincerely, for Eileen Stephens, PE, QSD/P District Permit Engineer STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION FM 91 1436 ENCROACHMENT PERMIT TR-0120 (REV. 6/2012) Permit No. 0522 6DP 0544 Dist/Co/Rte/PM In compliance with (Check one): 05-SLO-101-27.305/27.441 Date Your application of June 2, 2022 Fee To Be Billed Deposit Utility Notice No. of $4,200.00 Performance Bond Amount (1) Payment Bond Amount (2) Agreement No. of Bond Company R/W Contract No. of Bond Number (1) Bond Number (2) TO: Gregg Drilling, LLC Attn: Brian Savela 2726 Walnut Avenue Signal Hill, CA 90755 Phone: 562-427-6899 Permittee’s Reference No. 91506A , PERMITTEE and subject to the following, PERMISSION IS HEREBY GRANTED to: Perform all or portions of the following described work as contracted with the Permittee of permit number 0522 NSV 0140; At exploratory location B-17, 3 borings will be drilled using direct push methods to a depth of 70-ft below ground surface. Depth discrete soil and ground water samples will be taken to analyze water quality. After borings are completed, the test holes will be backfilled per standard DWR bulletin 74-90 and the projects contracts documents. At exploratory location B-12, 3 borings will be drilled using direct push methods to a depth of 70-ft below ground surface. Depth discrete soil and ground water samples will be taken to analyze water quality. After borings are completed, the test holes will be backfilled per standard DWR bulletin 74-90 and the projects contracts documents saw cut and repair asphalt, 2-ft wide by 18-ft long per city standards, the asphalt replacement will be 10-inches thick based on city standard 6020 as shown on the plans and as directed by the permit provisions for permit number 0522 NSV 0140 and the attached approved traffic control plans in US Highway 101 right of way between postmiles 27.305 and 27.441 in the City and County of San Luis Obispo as a Double Permit. Page 1 of 4 THIS PERMIT IS NOT A PROPERTY RIGHT AND DOES NOT TRANSFER WITH THE PROPERTY TO A NEW OWNER. The following attachments are also included as part of this permit (Check applicable): In addition to fee, the Permittee will be billed actual costs for: ☒ Yes ☐ No General Provisions (TR-0045) ☐ Yes ☒ No Utility Maintenance Provisions ☒ Yes ☐ No Review ☒ Yes ☐ No Special Provisions ☒ Yes ☐ No Inspection ☐ Yes ☒ No A Cal-OSHA permit, if required: Permit No. _________________ ☒ Yes Field Work ☐ Yes ☒ No As-Built Plans Submittal Route Slip for Locally Advertised Projects (If any Caltrans effort expended) ☒ Yes ☐ No Std. Storm Water Pollution Prevention Special Provisions ☒ Yes ☐ No The information in the environmental documentation has been reviewed and is considered prior to approval of this permit. This permit is void unless the work is completed before December 31, 2022 This permit is to be strictly construed and no other work other than specifically mentioned is hereby authorized. No project work shall be commenced until all other necessary permits and environmental clearances have been obtained. cc: APPROVED: Permit File Jim McKrell-Whitley Gardens RE Off. (Insp.) Cindy Knoeck-D.O. TIMOTHY M. GUBBINS, District Director BY: AK for Eileen Stephens, PE, QSD/P, District Permit Engineer ADA Notice For individuals with sensory disabilities, this document is available in alternate formats. For alternate format information, contact the Forms Management Unit at (916) 445- 1233, TTY 711, or write to Records and Forms Management, 1120 N Street, MS-89, Sacramento, CA 95814. Gregg Drilling, LLC 0522 6DP 0544 05-SLO-101-27.305/27.441 Page 2 of 4 STATE PERMIT INSPECTOR Unless approved otherwise by the State Permit Inspector, Permittee must contact the State Permit Inspector listed below, at the following times, before starting work in the State right of way: • A minimum of two weeks prior to commencing work for a pre-job meeting to discuss permit provisions, notification requirements, and scheduling. • A minimum of two working days prior to commencing work. State Permit Inspector: Jim McKrell Phone: (805) 276-1570 Email: jim.mckrell@dot.ca.gov Fax: Notification requirements that will impact your work schedule: 1. Changes to horizontal or vertical clearances; minimum of 25-day advance notification. 2. Lane closures: completed “Weekly Traffic Update” form must be submitted by noon the Tuesday prior to date of proposed lane closure. 3. Public Affairs: completed “Public Affairs – Permitted Activity Notification” form must be submitted by noon the Wednesday prior to begin activity date. 4. When work has been interrupted for more than five working days, the Permittee must notify the Caltrans Permit Inspector a minimum of two working days prior to restarting work. This issued encroachment permit is void unless the permitted activity or construction is completed by the void date shown on page 1 of this encroachment permit. The Permittee is solely responsible to keep track of the permit void date. All requests to extend this void date must be received by the District 5 Encroachment Permits Office while the encroachment permit is valid. Request for an extension received after the permit void date cannot be processed. Pursuant to the Executive Department, State of California, Proclamation of a State of Emergency, signed on October 27, 2019, and under the direction of the Office of Emergency Services and the State Emergency Plan, work authorized by this permit will be suspended when a planned Public Safety Power Shutoff (PSPS) notification is in effect. Unless Permittee has obtained special approval from the Director of Caltrans or his assigns to work during a PSPS event, Permittee must stop work and make all traveled ways and roadsides safe for public travel and emergency services if notified by the Director of Caltrans or his assigns. Gregg Drilling, LLC 0522 6DP 0544 05-SLO-101-27.305/27.441 Page 3 of 4 All work must be done in accordance with the latest editions of Caltrans’ Standard Specifications and Standard Plans, the attached Encroachment Permit General Provisions, the following special provisions, and under the conditions, provisions, and approved plans of ENCROACHMENT PERMIT NUMBER 0522 NSV 0140. Caltrans Lane Closure System (LCS) Compliance Contacts Brian Savela Eleni Pateras Phone Number: (562) 449-7524 Phone Number: (831) 334-4077 Email: bsavela@greggdrilling.com Email: epateras@greggdrilling.com In commencing work under this permit, Permittee acknowledges and agrees to the following: 1. Recommend placing W20-1 "Road Work Ahead" sign on northbound Madonna Road off-ramp. 2. This encroachment permit, number 0522 6DP 0544, a Double Permit, is issued for the purpose of allowing Permittee to construct the improvements approved under encroachment permit number 0522 NSV 0140, the Parent Permit. 3. No other person or party, other than the Permittee or Permittee’s subcontractors is authorized to work under this Double Permit. 4. Permittee is responsible for all work performed by Permittee’s subcontractors working under this Double Permit. Permittee must verify that plans from which work is performed are identical to those issued under Encroachment Permit (listed above) or any Rider thereto. Permittee must retain a copy of this permit and Encroachment Permit Number 0522 NSV 0140 at the job site whenever work is in progress. A certificate of liability insurance and an additional insured endorsement has been provided to cover the State’s potential liability for the permitted work and the issuance of a contractor’s Double Permit. The certificate and endorsement names “the State of California, California Department of Transportation, the directors, officers, employees, and/or agents of the State of California and/or the California Department of Transportation“ as additional insured as required by the parent permit number 0522 NSV 0140 and the issuance of the Double Permit. Gregg Drilling, LLC 0522 6DP 0544 05-SLO-101-27.305/27.441 Page 4 of 4 PROJECT COMPLETION The permit fee consists of a non-refundable review and processing fee of $770.00 and a fee deposit of $3,430.00 required to cover estimated costs for State construction inspection, inspection administration, and, if any, State furnished equipment and field work. Permittee will be billed for all inspection activities exceeding the fee deposit, and any field work, repairs, and equipment costs performed by State forces, during or at the conclusion of the permitted project. Unless otherwise provided for in writing, payor(s) will be refunded proportional amounts of any unused fee deposit(s) at the completion of the permit project and permit process. Once work authorized by this permit has started, cancelling the permit or failure to contact the Caltrans Permit Inspector may result in the forfeiture of any remaining fee deposits. Immediately following completion of the work permitted herein, the Permittee must fill out and send by email the Notice of Completion attached to this permit. THANK YOU! STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 1 of 6 © 2018 California Department of Transportation. All rights reserved. ENCROACHMENT PERMIT GENERAL PROVISIONS TR – 0045 (REV. 04/2021) 1. AUTHORITY: The California Department of Transportation (“Department”) has authority to issue encroachment permits under Division 1, Chapter 3, Article 1, Sections 660 through 734 of the Streets and Highways Code. 2. REVOCATION: Encroachment permits are revocable on five (5) business days’ notice unless otherwise stated on the permit and except as provided by law for public corporations, franchise holders, and utilities. Notwithstanding the foregoing, in an emergency situation as determined by the Department, an encroachment permit may be revoked immediately. These General Provisions and any applicable Special Provisions are subject to modification or abrogation by the Department at any time. Permittees’ joint use agreements, franchise rights, reserved rights or any other agreements for operating purposes in State of California (“State”) highway right-of-way may be exceptions to this revocation. 3. DENIAL FOR NONPAYMENT OF FEES: Failure to pay encroachment permit fees when due may result in rejection of future applications and denial of encroachment permits. 4. ASSIGNMENT: This encroachment permit allows only the Permittee or Permittee’s authorized agent to work within or encroach upon the State highway right-of-way, and the Permittee may not assign or transfer this encroachment permit. Any attempt to assign or transfer this encroachment permit shall be null and void. 5. ACCEPTANCE OF PROVISIONS: Permittee understands and agrees to accept and comply with these General Provisions, the Special Provisions, any and all terms and/or conditions contained in or incorporated into the encroachment permit, and all attachments to the encroachment permit (collectively “the Permit Conditions”), for any encroachment, work, and/or activity to be performed under this encroachment permit and/or under color of authority of this encroachment permit. Permittee understands and agrees the Permit Conditions are applicable to and enforceable against Permittee as long as the encroachment remains in, under, or over any part of the State highway right-of-way. 6. BEGINNING OF WORK: When traffic is not impacted (see General Provision Number 35), the Permittee must notify the Department’s representative two (2) business days before starting permitted work. Permittee must notify the Department’s representative if the work is to be interrupted for a period of five (5) business days or more, unless otherwise agreed upon. All work must be performed on weekdays during regular work hours, excluding holidays, unless otherwise specified in this encroachment permit. 7. STANDARDS OF CONSTRUCTION: All work performed within State highway right-of-way must conform to all applicable Departmental construction standards including but not limited to: Standard Specifications, Standard Plans, Project Development Procedures Manual, Highway Design Manual and Special Provisions. Other than as expressly provided by these General Provisions, the Special Provisions, the Standard Specifications, Standard Plans, and other applicable Departmental standards, nothing in these General Provisions is intended to give any third party any legal or equitable right, remedy, or claim with respect to the encroachment permit and/or to these General Provisions or any provision herein. These General Provisions are for the sole and exclusive benefit of the Permittee and the Department. Where reference is made in such standards to “Contractor” and “Engineer,” these are amended to be read as “Permittee” and “Department’s representative,” respectively, for purposes of this encroachment permit. 8. PLAN CHANGES: Deviations from plans, specifications, and/or the Permit Conditions as defined in General Provision Number 5 are not allowed without prior approval from the Department’s representative and the Federal Highway Administration (“FHWA”) representative if applicable. 9. RIGHT OF ENTRY, INSPECTION AND APPROVAL: All work is subject to monitoring and inspection. The United States, the State, the Department, and the Directors, officers, employees, agents, and/or contractors of the State and/or of the Department, and other state, and federal agencies, and the FHWA, through their agents or representatives, must have full access to highway facilities/encroachment area, at any and all times for the purpose of inspection, maintenance, activities needed for construction/reconstruction, and operation of the State highway right-of-way. Upon completion of work, Permittee must request a final inspection for acceptance and approval by the Department. The local public agency Permittee must not give final construction approval to its contractor until final acceptance and approval by the Department is obtained. 10. PERMIT AT WORKSITE: Permittee must keep the permit package or a copy thereof at the work site at all times and must show it upon request to any Department representative or law enforcement officer. If the permit package, or a copy thereof, is not kept and made available at the work site at all times, the work must be suspended. 11. CONFLICTING ENCROACHMENTS: Permittee must yield start of work to ongoing, prior authorized work adjacent to or within the limits of the Permittee’s project site. When existing encroachments conflict with Permittee’s work, the Permittee must bear all cost for rearrangements (e.g., relocation, alteration, removal, etc.). STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 2 of 6 © 2018 California Department of Transportation. All rights reserved. 12. PERMITS AND APPROVALS FROM OTHER PUBLIC AGENCIES AND/OR ENTITIES: This encroachment permit is invalidated if the Permittee has not obtained all permits and approvals necessary and required by law, including but not limited to permits from the California Public Utilities Commission (“CPUC”), California Occupational Safety and Health Administration (“Cal-OSHA”), and any other public agency and/or entity having jurisdiction. Permittee warrants all such permits and approvals have been obtained before beginning work under this encroachment permit. The Department may, at the Department’s discretion, require the Permittee to demonstrate that Permittee has obtained all such permits/approvals, and Permittee shall demonstrate this at the time and in the manner specified by the Department. 13. PEDESTRIAN AND BICYCLIST SAFETY: A safe continuous passageway must be maintained through the work area at existing pedestrian or bicycle facilities. At no time must pedestrians be diverted onto a portion of the street used for vehicular traffic. At locations where safe alternate passageways cannot be provided, appropriate signs and barricades must be installed at the limits of construction and in advance of the limits of construction at the nearest crosswalk or intersection to detour pedestrians to facilities across the street. Attention is directed to Section 7-1.04 “Public Safety,” and to Section 12-4.04 “Temporary Pedestrian Access Routes,” and to Section 16-2.02 “Temporary Pedestrian Facility,” of the Department’s Standard Specifications, and to California Vehicle Code section 21760, subdivision (c). 14. PUBLIC TRAFFIC CONTROL: The Permittee must provide traffic control protection, warning signs, lights, safety devices, etc., and take all other measures necessary for the traveling public’s safety as required by law and/or the Department. While providing traffic control, the needs of all road users, including but not limited to motorists, bicyclists and pedestrians, including persons with disabilities in accordance with the Americans with Disabilities Act, must be an essential part of the work activity. Lane, Bike Lane, Sidewalk, Crosswalk, and/or shoulder closures must comply with the Department’s Standard Specifications and Standard Plans for Temporary Traffic Control Systems & Temporary Pedestrian Access Routes, and with the applicable Special Provisions. Where issues are not addressed in the Standard Specifications, Standard Plans, and/or Special Provisions, the California Manual on Uniform Traffic Control Devices (Part 6, Temporary Traffic Control) must be followed. 15. MINIMUM INTERFERENCE WITH TRAFFIC: Permittee must plan and conduct work so as to create the least possible inconvenience to the traveling public (motorized vehicles, unmotorized vehicles such as bicycles, pedestrians, person(s) with disabilities, etc.), such that traffic is not unreasonably delayed. 16. STORAGE OF EQUIPMENT AND MATERIALS: The storage of equipment or materials is not allowed within State highway right-of-way, unless specified within the Special Provisions of this encroachment permit. If encroachment permit Special Provisions allow for the storage of equipment or materials within the State highway right-of-way, the equipment and material storage must also comply with Section 7-1.04, Public Safety, of the Department’s Standard Specifications. 17. CARE OF DRAINAGE: Permittee must provide alternate drainage for any work interfering with an existing drainage facility in compliance with the Department’s Standard Specifications, Standard Plans, and/or as directed by the Department’s representative. 18. RESTORATION AND REPAIRS IN STATE HIGHWAY RIGHT-OF-WAY: Permittee is responsible for restoration and repair of State highway right-of-way resulting from permitted work (Streets and Highways Code, section 670 et seq.). 19. STATE HIGHWAY RIGHT-OF-WAY CLEAN UP: Upon completion of work, Permittee must remove and dispose of all scraps, refuse, brush, timber, materials, etc. off the State highway right-of-way. The aesthetics of the highway must be as it was before work started or better. 20. COST OF WORK: Unless stated otherwise in the encroachment permit or a separate written agreement with the Department, the Permittee must bear all costs incurred for work within the State highway right-of-way and waives all claims for indemnification or contribution from the United States, the State, the Department, and from the Directors, officers, and employees of the State and/or the Department. Removal of Permittee’s personal property and improvements shall be at no cost to the United States, the State, and the Department. 21. ACTUAL COST BILLING: When specified in the permit, the Department will bill the Permittee actual costs at the currently set Standard Hourly Rate for encroachment permits. 22. AS-BUILT PLANS: When required, Permittee must submit one (1) set of folded as-built plans within thirty (30) calendar days after completion and acceptance of work in compliance with requirements listed as follows: a) Upon completion of the work provided herein, the Permittee must submit a paper set of As-Built plans to the Department’s representative. b) All changes in the work will be shown on the plans, as issued with the permit, including changes approved by Encroachment Permit Rider. c) The plans are to be prominently stamped or otherwise noted “AS-BUILT” by the Permittee’s representative who was responsible for overseeing the work. Any original plan that was approved with a Department stamp, or by signature of the Department’s representative, must be used for producing the As- Built plans. d) If construction plans include signing or striping, the dates of signing or striping removal, relocation, or installation must be shown on the As-Built plans when required as a condition of the encroachment permit. When the construction plans show signing and striping for staged construction on separate sheets, STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 3 of 6 © 2018 California Department of Transportation. All rights reserved. the sheet for each stage must show the removal, relocation, and installation dates of the appropriate staged striping and signing. e) As-Built plans must contain the Encroachment Permit Number, County, Route, and Post Mile on each sheet. f) The As-Built Plans must not include a disclaimer statement of any kind that differs from the obligations and protections provided by sections 6735 through 6735.6 of the California Business and Professions Code. Such statements constitute non-compliance with Encroachment Permit requirements and may result in the Department retaining Performance Bonds or deposits until proper plans are submitted. Failure to comply may also result in denial of future encroachment permits or a provision requiring a public agency to supply additional bonding. 23. PERMITS FOR RECORD PURPOSES ONLY: When work in the State highway right-of-way is within an area under a Joint Use Agreement (JUA) or a Consent to Common Use Agreement (CCUA), a fee exempt encroachment permit is issued to the Permittee for the purpose of providing a notice and record of work. The Permittee’s prior rights must be preserved without the intention of creating new or different rights or obligations. “Notice and Record Purposes Only” must be stamped across the face of the encroachment permit. 24. BONDING: The Permittee must file bond(s), in advance, in the amount(s) set by the Department and using forms acceptable to the Department. The bonds must name the Department as obligee. Failure to maintain bond(s) in full force and effect will result in the Department stopping all work under this encroachment permit and possibly revoking other encroachment permit(s). Bonds are not required of public corporations or privately-owned utilities unless Permittee failed to comply with the provisions and/or conditions of a prior encroachment permit. The surety company is responsible for any latent defects as provided in California Code of Civil Procedure section 337.15. A local public agency Permittee also must comply with the following requirements: a) In recognition that project construction work done on State property will not be directly funded and paid by State, for the purpose of protecting stop notice claimants and the interests of State relative to successful project completion, the local public agency Permittee agrees to require the construction contractor to furnish both a payment and performance bond in the local public agency’s name with both bonds complying with the requirements set forth in Section 3-1.05 Contract Bonds of the Department’s Standard Specifications before performing any project construction work. b) The local public agency Permittee must defend, indemnify, and hold harmless the United States, the State and the Department, and the Directors, officers, and employees of the State and/or Department, from all project construction related claims by contractors, subcontractors, and suppliers, and from all stop notice and/or mechanic’s lien claimants. The local public agency also agrees to remedy, in a timely manner and to the Department’s satisfaction, any latent defects occurring as a result of the project construction work. 25. FUTURE MOVING OF INSTALLATIONS: Permittee understands and agrees to relocate a permitted installation upon notice by the Department. Unless under prior property right or agreement, the Permittee must comply with said notice at the Permittee’s sole expense. 26. ENVIRONMENTAL: a) ARCHAEOLOGICAL/HISTORICAL: If any archaeological or historical resources are identified or encountered in the work vicinity, the Permittee must immediately stop work, notify the Department’s representative, retain a qualified archaeologist who must evaluate the site at Permittee’s sole expense, and make recommendations to the Department’s representative regarding the continuance of work. b) HAZARDOUS MATERIALS: If any hazardous waste or materials (such as underground storage tanks, asbestos pipes, contaminated soil, etc.) are identified or encountered in the work vicinity, the Permittee must immediately stop work, notify the Department’s representative, retain a qualified hazardous waste/material specialist who must evaluate the site at the Permittee’s sole expense, and make recommendations to the Department’s representative regarding the continuance of work. Attention is directed to potential aerially deposited lead (ADL) presence in unpaved areas along highways. It is the Permittee’s responsibility to take all appropriate measures to protect workers in conformance with California Code of Regulations Title 8, Section 1532.1, “Lead,” and with Cal-OSHA Construction Safety Orders, and to ensure roadway soil management is in compliance with Department of Toxic Substances Control (DTSC) requirements. c) Biological: If any regional, state, or federally listed biological resource is identified or encountered in the work vicinity, the Permittee must immediately stop work, notify the Department’s representative, retain a qualified biologist who must evaluate the site at Permittee’s sole expense, and make recommendations to the Department’s representative regarding the continuance of work. 27. PREVAILING WAGES: Work performed by or under an encroachment permit may require Permittee’s contractors and subcontractors to pay appropriate prevailing wages as set by the California Department of Industrial Relations. Inquiries or requests for interpretations relative to enforcement of prevailing wage requirements must be directed to the California Department of Industrial Relations. 28. LIABILITY, DEFENSE, AND INDEMNITY: The Permittee agrees to indemnify and save harmless the United States, the State, the Department, and the Directors, officers, employees, agents and/or contractors of the State and/or of the Department, including but not limited to the Director STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 4 of 6 © 2018 California Department of Transportation. All rights reserved. of Transportation and the Deputy Directors, from any and all claims, demands, damages, costs, liability, suits, or actions of every name, kind, and description, including but not limited to those brought for or on account of property damage, invasion of privacy, violation or deprivation of a right under a state or federal law, environmental damage or penalty, or injury to or death of any person including but not limited to members of the public, the Permittee, persons employed by the Permittee, and/or persons acting on behalf of the Permittee, arising out of or in connection with: (a) the issuance and/or use of this encroachment permit; and/or (b) the encroachment, work, and/or activity conducted pursuant to this encroachment permit, or under color of authority of this encroachment permit but not in full compliance with the Permit Conditions as defined in General Provision Number 5 (“Unauthorized Work or Activity”); and/or (c) the installation, placement, design, existence, operation, and/or maintenance of the encroachment, work, and/or activity; and/or (d) the failure by the Permittee or anyone acting on behalf of the Permittee to perform the Permittee’s obligations under any part of the Permit Conditions as defined in General Provision Number 5, in respect to maintenance or any other obligation; and/or (e) any change to the Department’s property or adjacent property, including but not limited to the features or conditions of either of them, made by the Permittee or anyone acting on behalf of the Permittee; and/or (f) a defect or obstruction related to or caused by the encroachment, work, and/or activity whether conducted in compliance with the Permit Conditions as defined in General Provision Number 5 or constituting Unauthorized Work or Activity, or from any cause whatsoever. The duty of the Permittee to indemnify and save harmless includes the duties to defend as set forth in Section 2778 of the Civil Code. It is the intent of the parties that except as prohibited by law, the Permittee will defend, indemnify, and hold harmless as set forth in this General Provision Number 28 regardless of the existence or degree of fault or negligence, whether active or passive, primary or secondary, on the part of: the United States, the State; the Department; the Directors, officers, employees, agents and/or contractors of the State and/or of the Department, including but not limited to the Director of Transportation and the Deputy Directors; the Permittee; persons employed by the Permittee; and/or persons acting on behalf of the Permittee. The Permittee waives any and all rights to any type of expressed or implied indemnity from or against the United States, the State, the Department, and the Directors, officers, employees, agents, and/or contractors of the State and/or of the Department, including but not limited to the Director of Transportation and the Deputy Directors. The Permittee understands and agrees to comply with the obligations of Titles II and III of the Americans with Disabilities Act in the conduct of the encroachment, work, and/or activity whether conducted pursuant to this encroachment permit or constituting Unauthorized Work or Activity, and further agrees to defend, indemnify, and save harmless the United States, the State, the Department, and the Directors, officers, employees, agents, and/or contractors of the State and/or of the Department, including but not limited to the Director of Transportation and the Deputy Directors, from any and all claims, demands, damages, costs, penalties, liability, suits, or actions of every name, kind, and description arising out of or by virtue of the Americans with Disabilities Act. The Permittee understands and agrees the Directors, officers, employees, agents, and/or contractors of the State and/or of the Department, including but not limited to the Director of Transportation and the Deputy Directors, are not personally responsible for any liability arising from or by virtue of this encroachment permit. For the purpose of this General Provision Number 28 and all paragraphs herein, “contractors of the State and/or of the Department” includes contractors, and their subcontractors, under contract to the State and/or the Department. This General Provision Number 28 and all paragraphs herein take effect immediately upon issuance of this encroachment permit, and apply before, during, and after the encroachment, work, and/or activity contemplated under this encroachment permit, whether such work is in compliance with the Permit Conditions as defined in General Provision Number 5 or constitutes Unauthorized Work or Activity, except as otherwise provided by California law. The Permittee’s obligations to defend, indemnify, and save harmless under this General Provision Number 28 take effect immediately upon issuance of this encroachment permit and have no expiration date, including but not limited to situations in which this encroachment permit expires or is revoked, the work or activity performed under this encroachment permit is accepted or not accepted by the Department, the encroachment, work, and/or activity is conducted in compliance with the Permit Conditions as defined in General Provision Number 5 or constitutes Unauthorized Work or Activity, and/or no work or activity is undertaken by the Permittee or by others on the Permittee’s behalf. If the United States or an agency, department, or board of the United States is the Permittee, the first two paragraphs of this General Provision Number 28 (beginning “The Permittee agrees to indemnify…” and “It is the intent of the parties…”) are replaced by the following paragraph: Claims for personal injury, death, or property damage allegedly caused by the negligent or wrongful act or omission of any employee of the United States acting within the scope of their official duties are subject to the Federal Tort Claims Act, as amended, 28 U.S.C. § 1346 and § 2671 et seq. (Chapter 171). 29. NO PRECEDENT ESTABLISHED: This encroachment permit is issued with the understanding that it does not establish a precedent. 30. FEDERAL CIVIL RIGHTS REQUIREMENTS FOR PUBLIC ACCOMMODATION: STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 5 of 6 © 2018 California Department of Transportation. All rights reserved. a) As part of the consideration for being issued this encroachment permit, the Permittee, on behalf of Permittee and on behalf of Permittee’s personal representatives, successors in interest, and assigns, does hereby covenant and agree that: i) No person on the grounds of race, color, or national origin may be excluded from participation in, be denied the benefits of, or be otherwise subjected to discrimination in the use of said facilities. ii) That in connection with the construction of any improvements on said lands and the furnishings of services thereon, no discrimination must be practiced in the selection and retention of first-tier subcontractors in the selection of second-tier subcontractors. iii) That such discrimination must not be practiced against the public in their access to and use of the facilities and services provided for public accommodations (such as eating, sleeping, rest, recreation), and operation on, over, or under the space of the State highway right-of-way. iv) That the Permittee must use the premises in compliance with all other requirements imposed pursuant to Title 15, Code of Federal Regulations, Commerce and Foreign Trade, Subtitle A. Office of the Secretary of Commerce, Part 8 (15 C.F.R. Part 8) and as said Regulations may be amended. b) That in the event of breach of any of the above nondiscrimination covenants, the State and the Department have the right to terminate this encroachment permit and to re-enter and repossess said land and the facilities thereon and hold the same as if said permit had never been made or issued. 31. MAINTENANCE: The Permittee is responsible at Permittee’s sole expense for the encroachment, and the inspection, maintenance, repair, and condition thereof, so that it does not negatively impact State highway safety, maintenance, operations, construction, activities needed for construction/reconstruction, State facilities, or other encroachments. Additional permits or approval documents may be required authorizing additional work related to inspection, repair, and/or maintenance activities. 32. SPECIAL EVENTS: In accordance with subdivision (a) of Streets and Highways Code section 682.5 and 682.7, the Department is not responsible for the conduct or operation of the permitted activity, and the applicant agrees to defend, indemnify, and hold harmless the United States, the State, the Department, and the Directors, officers, employees, agents, and contractors of the State and/or of the Department, including but not limited to the Director of Transportation and the Deputy Directors, from any and all claims, demands, damages, costs, liability, suits, or actions of every name, kind and description arising out of any activity for which this encroachment permit is issued. The Permittee is required, as a condition of this encroachment permit, for any event that awards prize compensation to competitors in gendered categories, for any participant level that receives prize compensation, to ensure the prize compensation for each gendered category is identical at each participant level. (Streets and Highways Code, section 682.7.) The Permittee understands and agrees to comply with the obligations of Titles II and III of the Americans with Disabilities Act in the conduct of the event, and further agrees to defend, indemnify, and save harmless the United State, the State and the Department, and the Directors, officers, and employees of the State and/or Department, including but not limited to the Director of the Department and the Deputy Directors, from any and all claims, demands, damages, costs, liability, suits, or actions of every name, kind and description arising out of or by virtue of the Americans with Disabilities Act. 33. PRIVATE USE OF STATE HIGHWAY RIGHT-OF-WAY: State highway right-of-way must not be used for private purposes without compensation to the State. The gifting of public property uses and therefore public funds is prohibited under the California Constitution, Article XVI, Section 6. 34. FIELD WORK REIMBURSEMENT: Permittee must reimburse the Department for field work performed on Permittee’s behalf to correct or remedy hazards or damaged facilities, or to clear refuse, debris, etc. not attended to by the Permittee. 35. LANE CLOSURE REQUEST SUBMITTALS AND NOTIFICATION OF CLOSURES TO THE DEPARTMENT: Lane closure request submittals and notifications must be in accordance with Section 12-4.02, and Section 12.4-04, of the Department’s Standard Specifications or as directed by the Department’s representative. The Permittee must notify the Department’s representative and the Traffic Management Center (“TMC”) before initiating a lane closure or conducting an activity that may cause a traffic impact. In emergency situations when the corrective work or the emergency itself may affect traffic, the Department’s representative and the TMC must be notified as soon as possible. 36. SUSPENSION OF TRAFFIC CONTROL OPERATION: The Permittee, upon notification by the Department’s representative, must immediately suspend all traffic lane, bike lane, sidewalk, crosswalk, and/or shoulder closure operations and any operation that impedes the flow of traffic. All costs associated with this suspension must be borne by the Permittee. 37. UNDERGROUND SERVICE ALERT (USA) NOTIFICATION: Any excavation requires compliance with the provisions of Government Code section 4216 et seq., including but not limited to notice to a regional notification center, such as Underground Service Alert (USA). The Permittee must provide notification to the Department representative at least five (5) business days before, and the regional notification center at least forty- STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 6 of 6 © 2018 California Department of Transportation. All rights reserved. eight (48) hours before, performing any excavation work within the State highway right-of-way. 38. COMPLIANCE WITH THE AMERICANS WITH DISABILITIES ACT (ADA): All work within the State highway right-of-way to construct and/or maintain any public facility must be designed, maintained, and constructed strictly in accordance with all applicable Federal Access laws and regulations (including but not limited to Section 504 of the Rehabilitation Act of 1973, codified at 29 U.S.C. § 794), California Access laws and regulations relating to ADA, along with its implementing regulations, Title 28 of the Code of Federal Regulations Parts 35 and 36 (28 C.F.R., Ch. I, Part 35, § 35.101 et seq., and Part 36, § 36.101 et seq.), Title 36 of the Code of Federal Regulations Part 1191 (36 C.F.R., Ch. XI, Part 1191, § 1119.1 et seq.), Title 49 of the Code of Federal Regulations Part 37 (49 C.F.R., Ch. A, Part 37, § 37.1 et seq.), the United States Department of Justice Title II and Title III for the ADA, and California Government Code section 4450 et seq., which require public facilities be made accessible to persons with disabilities. Notwithstanding the requirements of the previous paragraph, all construction, design, and maintenance of public facilities must also comply with the Department’s Design Information Bulletin 82, “Pedestrian Accessibility Guidelines for Highway Projects” and Standard Plans & Specifications on “Temporary Pedestrian Access Routes.” 39. STORMWATER: The Permittee is responsible for full compliance with the following: a) For all projects, the Department’s Storm Water Program and the Department’s National Pollutant Discharge Elimination System (NPDES) Permit requirements under Order No. 2012-0011-DWQ, NPDES No CAS000003; and b) In addition, for projects disturbing one acre or more of soil, with the California Construction General Permit Order No. 2009-0009-DWQ, NPDES No CAS000002; and c) In addition, for projects disturbing one acre or more of soil in the Lahontan Region with Order No. R6T-2016- 0010, NPDES No CAG616002. d) For all projects, it is the Permittee’s responsibility to install, inspect, repair, and maintain all facilities and devices used for water pollution control practices (Best Management Practices/BMPs) before performing daily work activities. STATE OF CALIFORNIA DEPARTMENT OF TRANSPORTATION Page 1 of 2 ENCROACHMENT PERMIT SPECIAL PROVISIONS STORMWATER SPECIAL PROVIONS )25 MINIMAL 25 NO IMPACT (SWSP) TR-0400 (Rev 05/2018) 1. GENERAL: The purpose of these Special Provisions is to provide the Permittee with specifications for water pollution control to minimize, prevent, or control the discharge of material into the air, surface waters, groundwater, and storm sewers owned by the State or local agencies. These provisions are not intended to take the place of the Caltrans Water Pollution Control Program (WPCP) for projects where soil disturbance from work activities less than one acre, or work activities of one acre or more subject to the preparation of the Caltrans Storm Water Pollution Prevention Plan (SWPPP). The Permittee must comply with the following Special Provisions and the direction of the State Representative. All Stormwater Best Management Practices (BMPs) must conform to Section 13 Water Pollution Control of Caltrans’ Standard Specifications. 2. NPDES REQUIREMENTS: The Permittee must be responsible for full compliance with the Caltrans Storm Water Program and the Caltrans National Pollutant Discharge Elimination System (NPDES) Permit requirements (Order No. 2012-0011-DWQ, NPDES No CAS000003) and for and projects disturbing one acre or more of soil, full compliance with the California Construction General Permit (Order No. 2009-0009-DWQ, NPDES No CAS000002) or for projects for projects that have one acre or more of soil disturbance in the Lahontan Region (Order No. R6T- 2016-0010, NPDES No CAG616002). It is the Permittee’s responsibility to install, inspect, and repair or maintain facilities and devices used for water pollution control practices (BMPs) before performing daily work activities. Installation, inspection and maintenance responsibilities on the job site include: 1) soil stabilization materials in work areas that are inactive or prior to storm events, 2) water pollution control devices to control sediment and erosion, 3) implementation of spill and leak prevention procedures for chemical and hazardous substances stored on the job site, 4) material storage, 5) stockpile management, 6) waste management, 7) non-stormwater management, 8) water conservation, 9) tracking controls and 10) illicit connection, illegal discharge detection and reporting. The Permittee must report to the State representative when discharges enter into receiving waters, adjacent property, drainage systems or when discharges could be a cause or a threat for water pollution. The Permittee must also control illicit discharges or illegal dumping prior to start of daily work schedule. Copies of written notices or orders from the Regional Water Quality Control Board or other regulatory agency must be provided to the State representative within 48 hours of reported activity. F or additional information on stormwater compliance, visit the State Water Resources Control Boards storm water Website at: http://www.waterboards.ca.gov/water_issues/programs/stormwater 3. RESPONSIBILITY FOR DEBRIS REMOVAL: The Permittee must be responsible for preventing sediment, trash, debris, and other construction waste from entering the street, the storm drains, local creeks, or any other bodies of water. 4. SPOILS AND RESIDUE: The Permittee must vacuum any saw-cut concrete waste material, debris, residue, etc. No spoils, debris, residue, etc. must be washed into a drainage system. 5. SWEEPING: Sweep paved roads at construction entrance and exit locations and surrounding paved areas daily within the job site during: 1) clearing and grubbing, 2) earthwork, 3) trenching, 4) soil disturbance, 5) pavement grinding and/or cutting, and 6) after observing tracking of material onto or off the State property. Keep dust to a minimum during sweeping activities. Use vacuum whenever dust generation is excessive or sediment pickup is ineffective. Roadways or work areas must not be washed down with water. Street sweeping operations must conform to Section 13 Water Pollution Control of Caltrans’ Standard Specifications. 6. VEHICLES AND EQUIPMENT: Permittee must prevent all vehicles, equipment, etc. from leakage or mud tracking onto roadways. If leaks cannot be repaired immediately, remove the vehicle or equipment from the job site. 7. MAINTENANCE AND FUELING OF VEHICLES AND EQUIPMENT: Maintenance and fueling of equipment must not result in any pollution at the job site. The Permittee must immediately clean up spills/leaks, and properly dispose of contaminated soil and materials. 8. CLEANING VEHICLES AND EQUIPMENT: Limit vehicle and equipment cleaning or washing at the job site except what is necessary to control vehicle tracking or hazardous waste. The Permittee must clean all equipment within a bermed area or over a drip pan large enough to prevent run-off. No soaps, solvents, degreasers, etc. must be used in State right-of-way. Any water from this operation must be collected and disposed of at an appropriate site. Containment berms or dikes must be used for fueling, washing, maintaining and washing vehicles or equipment in outside areas. Containment must be performed at least 100 feet from concentrated flows of storm water, drainage courses, and storm drain inlets if within a flood plain, otherwise at least 50 feet if outside the floodplain. Keep adequate quantities of absorbent spill- cleanup material and spill kits in the fueling or maintenance area and on fueling trucks. 9. DIESEL FUELS: The use of diesel fuel from petroleum or other fossil fuel as a form-oil or solvent is not allowed. 10. WEATHER CONDITIONS AT WORKSITE: Any activity that would generate fine particles or dust that could be transported off site by stormwater must be performed during dry weather. 11. WIND EROSION PROTECTION: The use of Wind Erosion BMPs must be deployed year-round in instances where dust or fine particles could be transported off site. 12. HOT MIX ASPHALT: Runoff from washing hot mix asphalt must not enter into any drainage conveyances. 13. PROTECTION OF DRAINAGE FACILITIES: The Permittee must protect/cover gutters, ditches, drainage courses, and inlets with gravel bags, fiber rolls, State approved fabric filters, etc., to the satisfaction of the State representative during grading, paving, saw-cutting, etc. and materials must conform to Section 13- 6.02 Materials for Water Pollution Control of Caltrans’ Standard Specifications. No such protection measures must cause an obstruction to the traveling public. The Permittee must implement spill and leak prevention procedures for chemicals and hazardous substances stored on the job site (including secondary containment requirements) in accordance to section 13-4.03B Spill Prevention and Control, and 14-11 Hazardous Waste and Contamination, Water Pollution Control of Caltrans’ Standard Specifications. 14. PAINT: Rinsing of painting equipment and materials is not permitted in State right-of-way. When thoroughly dry, dispose of © 2018 California Department of Transportation. All Rights Reserved. STATE OF CALIFORNIA DEPARTMENT OF TRANSPORTATION Page 2 of 2 ENCROACHMENT PERMIT SPECIAL PROVISIONS the following as solid waste: dry latex paint, paint cans, used brushes, rags, gloves, absorbent materials, and drop cloths. Oil based paint sludge and unusable thinner must be disposed of at an approved hazardous waste site. 15. CONSTRUCTION MATERIALS: Stockpile of all construction materials, including, but not limited to; pressure treated wood, asphalt concrete, cold mix asphalt concrete, concrete, grout, cement containing premixes, and mortar, must conform to section 13-4.03C (2) Material Storage & 13-4.03C (3) Stockpile Management of Caltrans’ Standard Specifications. 16. CONCRETE EQUIPMENT: Concrete equipment must be washed in a designated washing area in a way that does not contaminate soil, receiving waters, or storm drain systems. 17. EXISTING VEGETATION: Established existing vegetation is the best form of erosion control. Minimize disturbance to existing vegetation. Damaged or removed vegetation must be replaced as directed by the State Representative. 18. SOIL DISTURBANCE: Soil disturbing activities must be avoided during the wet weather season. I f construction activities during wet weather are allowed in your permit, all necessary erosion control and soil stabilization measures must be implemented in advance of soil disturbing activity. 19. SLOPE STABILIZATION AND SEDIMENT CONTROL: Consider a certified expert in Erosion and Sediment control in cases where slopes are disturbed during construction. The Permittee is directed to comply with Section 13.5 Temporary Soil Stabilization and Section 21 Erosion Control of Caltrans’ Standard Specifications during application of temporary soil stabilization measures to the soil surface. Fiber rolls or silt fences may be required down slope until permanent soil stabilization is established. Remove the accumulated sediment whenever the sediment accumulates to 1/3 of the linear sediment barrier height. The Permittee must limit the use of plastic materials when more sustainable, environmentally friendly alternatives exist or when environmental regulations prohibit their use within the project. 20. STOCKPILES: Stockpiles containing aggregate and/or soil must be stored at least 100 feet from concentrated flows of storm water, drainage courses, and storm drain inlets if within a flood plain, otherwise at least 50 feet if outside the floodplain, and must be covered and protected with a temporary perimeter sediment barrier. Cold mix stockpiles must be stored on an impermeable surface and covered with 9 mil plastic to prevent contact with water. Minimize stockpiling of materials on the job site. Manage stockpiles by implementing the water pollution control practices in Section 13-4.03C (3) Stockpile Management of the State of California standard specifications for construction. 21. DISCOVERY OF CONTAMINATION: The State Representative must be notified in case any unusual discoloration, odor, or texture of ground water, is found in excavated material or if abandoned, underground tanks, pipes, or buried debris are encountered. 22. SANITARY AND SEPTIC WASTE: Do not bury or discharge wastewater from a sanitary or septic system within the highway. Properly connected sewer facilities are free from leaks. With State Representative approval place portable sanitary facility at least 50 feet away from storm drains, receiving waters, and flow lines. Permittee must comply with local health agency provisions when using an on-site disposal system. 23. LIQUID WASTE: Prevent job site liquid waste from entering storm drain systems and receiving waters. Drilling slurries, grease or oil-free waste water or rinse water, dredging, wash water or rinse water running off a surface or other non-storm water liquids not covered under separate waste water permits must be held in structurally sound, leak-proof containers, such as portable bins or portable tanks. Store containers at least 50 feet away from moving vehicles and equipment. Liquid waste may require testing to determine hazardous material content prior to disposal. All measures must conform to section 13-4.03D (5) Liquid Waste, Water Pollution Control of Caltrans’ Standard Specifications. 24. WATER CONTROL AND CONSERVATION: Manage water use in a w ay that will prevent erosion and the discharge of pollutants into storm drain systems and receiving waters. Direct runoff, including water from water line repair from the job site to areas where it can infiltrate into the ground. Direct water from off-site sources around the job site or from contact with jobsite runoff. 25. PILE DRIVING: Keep spill kits and cleanup materials at pile driving locations. Park pile driving equipment over drip pans, absorbent pads, or plastic sheeting with absorbent material, and away from stormwater run-on when not in use. 26. DEWATERING: Dewatering consists of discharging accumulated storm water, groundwater, or surface water from excavations or temporary containment facilities. All dewatering operations must comply with the latest Caltrans guidelines including the Field Guide for Construction Site Dewatering. Contact State representative for approval of dewatering discharge by infiltration or evaporation, otherwise, any effluent discharged into a permitted storm water system requires approval from the Regional Water Quality Control Board. Prior to the start of dewatering, the Permittee must provide the State Representative with a dewatering and discharge work plan that complies with section 13-4.03G Dewatering, Water Pollution Control of Caltrans’ Standard Specifications. A copy of the Waste Discharge Permit and a copy of a valid WDID number issued by the Regional Board must be provided to the State representative. © 2018 California Department of Transportation. All Rights Reserved. DISTRICT 5 NOTIFICATION REQUIREMENTS The following provisions shall apply to all permit work requiring temporary lane closures or traffic detours: Temporary Lane Closures Notification of temporary lane closures or traffic detours shall be given to the State Inspector for his approval using copies of the attached form entitled, WEEKLY TRAFFIC UPDATE. Notification shall be submitted to the State Inspector by 12:00 PM (noon) Tuesday, prior to the week of the proposed closure or detour. Notifications submitted after the deadline cannot be approved for the upcoming week. All traffic control requiring the temporary closure of lanes or detour of traffic shall be approved in advance by the State Inspector. Ramp Closures 14 to 7 calendar days prior to an approved ramp closure, notice shall be posted at the ramp entrance using the appropriate SC6 sign. In addition, an SC8 or portable changeable message sign shall be posted for the preceding ramp the day of the closure unless otherwise approved by the Caltrans Permit Inspector. Caltrans Lane Closure System (LCS) Compliance Work authorized by this permit may require compliance and proper notification in LCS. If not identified elsewhere in this permit, you or your contractor must provide the contact information for two personnel, who will be ensuring LCS compliance during the pre-job meeting with the Caltrans Permit Inspector. Contact information shall include personnel’s full names, phone numbers and email addresses. You or your Contractor will be required to properly notify the District Traffic Management Center (TMC) as described below. When a lane closure or lane shift has been identified by the Inspector with a Lane Closure ID # and Log #, you will be required to provide the TMC notification status when you are placing the lane closure, when you remove the lane closure, or when you cancel the lane closure. When providing the status of the lane closure to the TMC you will need to follow these steps, 1. Obtain the Lane Closure ID and Log # assigned for the approved scheduled lane closure event from the Caltrans Permit Inspector a minimum of one weekday prior to the closure day or duration. 2. Call the TMC/Lane Closure Phone Number (805) 549-3837 to provide the Lane Closure ID Status • “1097”- Lane closure work starting (1st Cone Placed). • “1098”- Lane closure work complete (Last Cone Picked Up). • “1022”- Lane closure work cancelled. When calling the TMC to provide the status on your lane closure you will say something to the effect of (substituting your lane closure ID number and Log number for example ID “P101CA” and Log number “1” below), • “1097”- “This is (your name, phone number) calling to provide a 1097 status to lane closure ID P101CA and log number 1. That is a 1097 for Papa 101 Charlie Alpha log number 1.” • “1098”- “This is (your name, phone number) calling to provide a 1098 status to lane closure ID P101CA, log number 1. That is a 1098 for Papa 101 Charlie Alpha log number 1.” • “1022”- “This is (your name, phone number) calling to provide a 1022 status to lane closure ID P101CA, log number 1. That is a 1022 for Papa 101 Charlie Alpha log number 1.” Failure to properly status the lane closures will result in a written warning by the Caltrans Permit Inspector on the first violation. If there is a 2nd violation, your permit may be suspended until a Contractor or new Contractor (C-31 or General Engineering A License preferred) who is experienced in traffic control and LCS notification is hired. Additional violations will result in the revocation of the permit and may impact the processing of future encroachment permit application packages. You can check your lane closure status at the following website: https://lcswebreports.dot.ca.gov/ Special Notifications If permitted activities such as road closures or traffic detours may result in significant traffic congestion, Permittee shall be responsible for coordinating advance notification to local newspapers, television and radio stations, and emergency response providers with both the State Inspector and the Caltrans Public Information Officer, telephone (805) 549-3237. Public notice may include press releases and/or traffic signing. Permittee shall complete and submit the attached form entitled PUBLIC AFFAIRS – PERMITTED ACTIVITY NOTIFICATION to the Caltrans Public Affairs Office prior to 12:00 PM (noon) the Wednesday prior to the approved closure or event. Additional information or clarification may be required in the form of a written description of the activities in a format that is suitable for a press release. The form may be delivered by fax to (805) 549- 3638 or emailed to the PIO contact on the form. Horizontal and Vertical Requirements for Extra-Legal Load Vehicles Permittee shall provide written notification to the Caltrans Permit Inspector or Caltrans Representative, of proposed horizontal or vertical lane restrictions which will affect extra-legal loads up to 16' wide and 18' high, or ramp closures/re-openings that may affect extra-legal loads traveling through the project area. Said notification shall be delivered to the inspector no fewer than 25 days prior to proposed change. Permittee shall immediately notify the Caltrans Permit Inspector or Caltrans Representative as soon as the restriction is no longer present. Attention: Jim McKrell WEEKLY TRAFFIC UPDATE PERMITS For the Week of: ___________________________ Please send this form to your designated PERMIT INSPECTOR each week if you will be performing work that will impact traffic (lane closures, ramp closures, traffic control, etc.) Weekly Traffic Updates must be received by Tuesday 12:00 PM (noon) the week prior to the requested date(s) of the planned traffic control. Failure to meet the deadline may result in the denial of the requested traffic control. The State Permit Inspector may also require changes to the requested traffic control prior to its approval. We appreciate your cooperation. These updates need to be done in a timely manner to provide information to the traveling public we serve. THANKS!!!! DATE TIME (begin / end) Location – Cross Streets, County Route, and Post Mile (from / to) Impact on Traffic (Description) Reason Send or fax to: Your PERMIT INSPECTOR - Jim McKrell, Email: jim.mckrell@dot.ca.gov Your Name: ________________________________________ Phone: ______________________FAX: _____________________ Company/Dept.: _____________________________________ Email: ________________________________________________ PERMIT #: 0522 6DP 0544 Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 26 27 28 29 30 31 1 1 2 3 4 5 1 2 3 4 5 2 3 4 5 6 7 8 6 7 8 9 10 11 12 6 7 8 9 10 11 12 9 10 11 12 13 14 15 13 14 15 16 17 18 19 13 14 15 16 17 18 19 16 17 18 19 20 21 22 20 21 22 23 24 25 26 20 21 22 23 24 25 26 23 24 25 26 27 28 29 27 28 27 28 29 30 31 30 31 Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 1 2 1 2 3 4 5 6 7 1 2 3 4 3 4 5 6 7 8 9 8 9 10 11 12 13 14 5 6 7 8 9 10 11 10 11 12 13 14 15 16 15 16 17 18 19 20 21 12 13 14 15 16 17 18 17 18 19 20 21 22 23 22 23 24 25 26 27 28 19 20 21 22 23 24 25 24 25 26 27 28 29 30 29 30 31 26 27 28 29 30 Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 1 2 1 2 3 4 5 6 1 2 3 3 4 5 6 7 8 9 7 8 9 10 11 12 13 4 5 6 7 8 9 10 10 11 12 13 14 15 16 14 15 16 17 18 19 20 11 12 13 14 15 16 17 17 18 19 20 21 22 23 21 22 23 24 25 26 27 18 19 20 21 22 23 24 24 25 26 27 28 29 30 28 29 30 31 25 26 27 28 29 30 31 Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 1 1 2 3 4 5 1 2 3 2 3 4 5 6 7 8 6 7 8 9 10 11 12 4 5 6 7 8 9 10 9 10 11 12 13 14 15 13 14 15 16 17 18 19 11 12 13 14 15 16 17 16 17 18 19 20 21 22 20 21 22 23 24 25 26 18 19 20 21 22 23 24 23 24 25 26 27 28 29 27 28 29 30 25 26 27 28 29 30 31 30 31 1 2 3 4 5 6 7 August March April November Cesar Chaves Day March 31st Designated Holidays Caltrans Holiday/Special Day Date observed Martin Luther King Jr. Day 3rd Monday in January May June July September October December 25th Veterans Day Thanksgiving Day Christmas Day Last Monday in May July 4th 1st Monday in September November 11th 4th Thurs and Fri in November Memorial Day Independence Day Labor Day Caltrans Holiday/Special Day - No closures allowed No closures until 08:00 No closures until 20:00 2022 Holiday and Special Day Lane Closure Restrictions For maintenance, permits and projects using blanket chart hours No closures after 12:00 Noon No closures allowed Designated Holiday - No closures allowed Date observed December January 1st 3rd Monday in February New Year's Day Presidents' Day January February Replace Reserved in section 12-4.02C(3)(f) with: Closure restrictions for designated holidays and special days are shown in the following table: Lane Closure Restrictions For Designated Holidays And Special Days Thu Fri Sat Sun Mon Tues Wed Thu Fri Sat Sun Mon x H xx xx xx xxx SD xx x xx H xx xx xxx SD xx xx xx H xx xx xxx SD xx x xx xx xx H xx xxx SD xx xxx xx H xx xxx SD xx xx H xx xxx SD xx x H xx xxx x xx H* xx xx xx xx xxx SD xx Legend: Refer to lane requirement charts. x The full width of the traveled way must be open for use by traffic after 1200. xx The full width of the traveled way must be open for use by traffic. xxx The full width of the traveled way must be open for use by traffic until 0800. H Designated holiday H* Thanksgiving Holiday-The full width of the traveled way must be open for use by traffic between Tuesday at 1200 until the following Monday at 0800. SD Special day PUBLIC AFFAIRS - PERMITTED ACTIVITY NOTIFICATION This Project Notification should be faxed or e-mailed to Public Affairs as early as possible and preferably by noon the Wednesday prior to beginning of permitted activity. Please fill out this form as thoroughly as possible and use additional paper if needed. Include all information that the traveling public may need to be made aware of. TO: PUBLIC AFFAIRS FAX: (805) 549-3326 ATTN: □ Kevin Drabinski (Monterey, San Benito, and Santa Cruz Counties) PHONE: (805) 549-3138 E-Mail: kevin.drabinski@dot.ca.gov □ Jim Shivers (San Luis Obispo and Santa Barbara Counties) PHONE: (805) 549-3237 E-Mail: jim.shivers@dot.ca.gov PERMIT NUMBER: 0522 6DP 0544 COUNTY, ROUTE & POSTMILE: 05-SLO-101-27.305/27.441 LIMITS OF PERMITTED ACTIVITY (location in miles, distance from nearest landmarks or cities, etc.): PROJECT DESCRIPTION AND PURPOSE FOR PROJECT: Perform all or portions of the following described work as contracted with the Permittee of permit number 0522 NSV 0140; At exploratory location B-17, 3 borings will be drilled using direct push methods to a depth of 70-ft below ground surface. Depth discrete soil and ground water samples will be taken to analyze water quality. After borings are completed, the test holes will be backfilled per standard DWR bulletin 74-90 and the projects contracts documents. At exploratory location B-12, 3 borings will be drilled using direct push methods to a depth of 70-ft below ground surface. Depth discrete soil and ground water samples will be taken to analyze water quality. After borings are completed, the test holes will be backfilled per standard DWR bulletin 74-90 and the projects contracts documents saw cut and repair asphalt, 2-ft wide by 18-ft long per city standards, the asphalt replacement will be 10-inches thick based on city standard 6020 as shown on the plans and as directed by the permit provisions for permit number 0522 NSV 0140 and the attached approved traffic control plans in US Highway 101 right of way between postmiles 27.305 and 27.441 in the City and County of San Luis Obispo as a Double Permit. ACTIVITY COORDINATOR: PHONE: FAX: E-MAIL: BEGIN ACTIVITY DATE: END ACTIVITY DATE: ANTICIPATED TRAFFIC CONTROL: ANTICIPATED TRAFFIC DELAYS: COMMENTS: (What else does the public need to know? Diagrams, maps also helpful.) *Please inform Public Affairs of any changes to the above information by submitting an updated form. COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDCIVIL mphftftftft55606570 ftftft 50454035302520160250360490640108012001320144015601680801251802453205406006607207808402LTANGENTLMERGINGL/2SHIFTINGL/3SHOULDER40639012316027030033036039042027426082107180200220240260280TAPERTANGENTCONFLICT2025303540455040506070809010010121517202225TABLE 1XYZWhere: L = Taper length in feetW = Width of offset in feet operating speed in mph speed prior to work starting, or the anticipatedS = Posted speed limit, off-peak 85th-percentile mphftftftft55606575 504540353025201151552002503053604254955706458201582052573153784465205986828662713334004745536387289273544275075936867851003-3%-6%-9%SPEEDTABLE 2116120165215287227173126DEVICE SPACINGMAXIMUM CHANNELIZING(S)SPEEDFOR WIDTH OF OFFSET 12 FEET (W)MINIMUM TAPER LENGTHDOWNGRADE Min DMin Dftftft TABLE 3ROAD TYPEDISTANCE BETWEEN SIGNSABCRURALEXPRESSWAY / FREEWAY100250350500100010025035050010025035050015002640 For speed of 45 mph or more, L = WS For speed of 40 mph or less, L = WS˜/60 * - For other offsets, use the following merging taper length formula for L:*URBAN - 25 mph OR LESSURBAN - MORE THAN 25 mph TO 40 mphURBAN - MORE THAN 40 mph********* - Longitudinal buffer space or flagger station spacing and longer than 1 mile.*** - Use on sustained downgrade steeper than -3 percent operating speed in mph speed prior to work starting, or the anticipated* - Speed is posted speed limit, off-peak 85th-percentile** there is a conflict between existing pavement markings and channelizers (CA).** - Use for taper and tangent sections where there are no pavement markings or whereADVANCE WARNING SIGN SPACINGCHANNELIZING DEVICE SPACINGTAPER LENGTH CRITERIA ANDFLAGGER STATION SPACINGLONGITUDINAL BUFFER SPACE ANDDEPARTMENT OF TRANSPORTATIONSTATE OF CALIFORNIATRAFFIC CONTROL SYSTEM TABLESFOR LANE AND RAMP CLOSURESNO SCALE5010025501002550100255010025751800900450300501002570730771825891 recommmended distances. conditions, if necessary, by increasing or decreasing the These distances should be adjusted by the Engineer for field purposes only, and should be applied with engineering judgment.* - The distances are approximate, are intended for guidance2018 STANDARD PLAN T91-29-18T9Atifa FerouzC804023-31-19285May 31, 2018Return to Table of Contents STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONSHOULDER CLOSURENOTES: NOTES:ARIGHTSHOULDERCLOSEDW21-5bRAHEADNEXTx MILESCW7-3aPLANE CLOSURELANE CLOSURE AT EXIT RAMPALANECLOSEDC30(CA)AROADWORKAHEADW20-1BAEXIT23’ 1. 2. 3. 4. 10. 11. 12. 13. L/2LCLOSEDPER LANEL/2500’23’WORK AREA500’ABAOF ENTRANCE RAMP500’ Max OR AT BEGINNINGLANE CLOSURE AT ENTRANCE RAMPAB48" x 48"72" x 60"C36" x 30"SHOULDERW21-5WORKANO SCALEMEDIAN SHOULDERMEDIAN SHOULDER SHOULDERENT RANCE RAMP CONE SPACING X SEE TABLE 1SHOULDEREXIT RAMPSHOULDERMEDIAN SHOULDER CONE SPACING X SEE TABLE 1ORTRAFFIC CONEPORTABLE FLASHING BEACONTRAFFIC CONE (OPTIONAL TAPER)FAS SUPPORT OR TRAILERFLASHING ARROW SIGN (FAS)TEMPORARY TRAFFIC CONTROL SIGN FREEWAYS AND EXPRESSWAYSFOR LANE CLOSURE ONTRAFFIC CONTROL SYSTEMSC18(CA)ASHOULDERCLOSEDC30A(CA)spacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z for SEE NOTE 13COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNED No.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIACIVIL2LWORK AREASEE TABLE 2BUFFER SPACEDLLBCSEE TABLE 3AMEDIAN SHOULDERSHOULDERDISTANCE SEE TABLE 3ADVANCE WARNING SIGNSEE TABLE 1SEE TABLE 1ALANECLOSEDC30(CA)AROADWORKAHEADW20-1AW4-2RAAHEADCLOSEDRIGHT LANE2AW4-2ROVERLAY (AS APPROPRIATE)C20(CA)RSEE NOTES 2, 9 AND 10NOTE 1SEE TABLE 1 ANDCONE SPACING XL/3CONE SPACING SEE TABLE 1 AND SEE NOTE 1SEE NOTES 4 AND 8SEE NOTE 8SEE NOTE 5AND NOTE 1SEE NOTE 3AND NOTE 1NOTE 1SEE TABLE 1 ANDCONE SPACINGAND NOTE 1SEE TABLE 1CONE SPACING XL/3SEE NOTE 2 LEGENDSIGN PANEL SIZE (Min)AND NOTE 2DISTANCE SEE TABLE 3ADVANCE WARNING SIGNSEE NOTES 2 AND 109 AND 10SEE NOTES 2,SEE NOTES 9 AND 10devices for lane closures.Provide at least one person to continuously maintain traffic controlSEE NOTE 6E5-1 SEE NOTE 11SEE NOTE 6AND TABLE 1SEE NOTE 7SEE NOTE 12SEE NOTE 11W4-1Rhorizontal curve.at the top of crest verticle curve or on aflashing arrow sign. Lane closures shall not beginwhere possible for vehicles approaching the firstA minimum 1500’ sight distance shall be providedlarger project’s limits.of work area is obvious or ends within theat the end of the lane closure unless the endsize of 48" x 24" as appropriate, shall be placedA G20-2 "END ROAD WORK" sign, with minimumhours of darkness.the locations indicated for lane closure duringin color. Flashing beacons shall be placed atand shall be orange or fluorescent red-orangeEach flag shall be at least 16" x 16" in sizewith at least two flags for daytime closure.Each advance warning sign shall be equippedonly.used instead of cones for daytime closuresspacing indicated for traffic cones may bePortable delineators placed at one-half thesee CA MUTCD Figure 6H-22 to 6H-27.Ramp, when work is proposed on the local street,For the warning sign requirements at the Exitdistance that can be perceived by road users.used if the shoulder closure extends beyond theA W7-3aP "NEXT _____ MILES" plaque must beused as shown.The E5-1 or SC18(CA) and W4-1 signs shall be lanes are to be closed. shoulder is less than 8’ and the outside b) In the median if the width of the median the available lanes remain open to traffic. a) On opposite shoulder if at least one-half ofDuplicate sign installations are not required:5.6. 7. 8. 9.used.shown except that C20(CA)L and W4-2L signs shall beMedian lane closures shall conform to the details asThe flashing arrow sign shall be Type ˛.Use one flashing arrow sign for each lane closed.lane.between the L tapers required for each closed trafficThe 2L tangent shown along lane lines shall be usedtransverse alignment to provide access to the work.on the closed shoulder may be shifted from theThe transverse alignment of the cones or barricadestype ˛˛ barricades may be used instead of the 3 cones.1000’ as shown on the "Lane Closure" detail. Twowhere a taper across a traffic lane ends and everyacross each closed lane and shoulder at each locationA minimum of 3 cones shall be placed transverselyof lane closure.Place a C30(CA) sign every 1000 ’ throughout length2018 STANDARD PLAN T101-29-18T10See Standard Plan T9 for tables.Atifa FerouzC804023-31-19286May 31, 2018Return to Table of Contents STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATION SIGN PANEL SIZE (Min) A 48" x 48"B 48" x 18"C 48" x 30"LEGENDTRAFFIC CONEPORTABLE FLASHING BEACONTRAFFIC CONE (OPTIONAL TAPER)FAS SUPPORT OR TRAILERFLASHING ARROW SIGN (FAS)TEMPORARY TRAFFIC CONTROL SIGNAALANECLOSEDROADWORKAHEADAAHEADCLOSED3LEFT LANEAAHEADCLOSEDFREEWAYLANE CLOSURE WITH PARTIAL SHOULDER USECOMPLETE CLOSUREAROADWORKAHEADW20-1W20-1W20-3 6’ MaxAHEADCLOSED2LEFT LANEAW4-2LAALANECLOSEDW4-2LAAND TABLE 1 L/3C/2BC/2AND TABLE 1AHEADDETOURW20-2AASEE TABLE 3WORK AREA CB TABLE 1TAPER SEE2LL/2L/2SEE TABLE 2BUFFER SPACED NOTES: TABLE 1SEEAM4-10RROADCLOSEDC6’ MaxTAPER LSHOULDEROVERLAY (AS APPROPRIATE)TAPER LMEDIAN SHOULDERTAPER LMEDIAN SHOULDERTAPER LTAPER LOVERLAY (AS APPROPRIATE)SHOULDEROVERLAY (AS APPROPRIATE)TRAFFIC CONTROL SYSTEMFREEWAYS AND EXPRESSWAYSCONE SPACING SEE TABLE 1BR11-2SEE TABLE 1SEE TABLE 1SEE TABLE 1AW4-2LSEE TABLE 1SEE TABLE 1SEE TABLE 1CONE SPACING X L/3SEE TABLE 3DISTANCEWARNING SIGNADVANCESEE TABLE 3DISTANCEWARNING SIGNADVANCEC20(CA)LC30(CA) C20(CA)LC30(CA)DETOURspacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z forSEE NOTE 2FOR LANE CLOSURE ONTO ACCOMPANY PLANS DATED SEE NOTES 4 AND 8SEE NOTE 8SEE NOTE 5SEE NOTE 5SEE NOTE 8SEE NOTE 8SEE NOTE 2SEE NOTES 4 AND 8AND 9SEE NOTES 2AND 9SEE NOTES 2 8. 9. 10. NOTES:1. 2. 3. 4. 5. AND NOTE 1CONE SPACING SEE TABLE 1AND 9SEE NOTES 2AND 9SEE NOTES 2devices for lane closures.Provide at least one person to continuously maintain traffic controlSEE NOTE 2AND NOTE 1SEE TABLE 3AND TABLE 1SEE NOTE 7SEE NOTE 6SEE NOTE 3SEE NOTE 6SEE NOTE 6SEE NOTE 2AND NOTE 1SEE TABLE 3ASEE TABLE 1CONE SPACING XSEE NOTE 6SEE NOTE 6SEE NOTE 72LAND NOTE 1SEE NOTE 72LSEE NOTE 6SEE NOTE 10SEE NOTE 9 6.lane closure.Place a C30(CA) sign every 1000 ’ throughout length ofcurve.the top of crest vertical curve or on a horizontalflashing arrow sign. Lane closures shall not begin atwhere possible for vehicles approaching the first A minimum 1500’ of sight distance shall be provided obvious or ends within a larger project’s limits.of the lane closure unless the end of work area is48" x 24" as appropriate, shall be placed at the end A G20-2 "END ROAD WORK" sign, with minimum size of hours of darkness.the locations indicated for lane closure duringin color. Flashing beacons shall be placed atand shall be orange or fluorescent red-orangeEach flag shall be at least 16" x 16" in sizewith at least two flags for daytime closure.Each advance warning sign shall be equippedcones for daytime closures only.indicated for traffic cones may be used instead ofPortable delineators placed at one-half the spacingalignment to provide access to the work.closed shoulder may be shifted from the transverse the transverse alignment of the barricades on the closure area. Within the complete closure area, location shown and every 2000’ within the complete placed across each closed lane and shoulder at the A minimum of Two Type ˛˛ or ˛˛˛ barricades shall be C20(CA)R and W4-2R signs shall be used.as a traffic lane shall conform to the details shown except thatLane closures on the right side using partial median shoulderflashing arrow sign shall be Type ˛.Use one flashing arrow sign for each lane closed. Thebetween the L tapers required for each closed traffic lane.The 2L tangent shown along lane lines shall be usedfrom the transverse alignment to provide access to the work.the cones or barricades on the closed shoulder may be shiftedmay be used instead of the 3 cones. The transverse alignment ofClosure with Partial Shoulder USE" detail. Two type II barricadesacross a traffic lane ends and every 1000’ as shown on the "Laneeach closed lane and shoulder at each location where a taperA minimum of 3 cones shall be placed transversely across 7.COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNED No.Exp.RE G IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIACIVIL 2018 STANDARD PLAN T10ASee Standard Plan T9 for tables.1-29-18T10AAtifa FerouzC804023-31-19287May 31, 2018Return to Table of Contents STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONAHEADWORKROADENDROAD WORKWORK AREACLOSEDAHEADRIGHT LANEW20-1500’CBATYPICAL LANE CLOSUREAAABNOTES: LANECLOSEDCG20-2 BA36" x 18"TEMPORARY TRAFFIC CONTROL SIGN30" x 30"C TRAFFIC CONEPORTABLE FLASHING BEACONFLASHING ARROW SIGN (FAS)FAS SUPPORT OR TRAILERTRAFFIC CONTROL SYSTEMFOR LANE CLOSURE ONMULTILANE CONVENTIONALW4-2RSEE TABLE 3 NOTE48" x 48"TRAFFIC CONE (OPTIONAL TAPER)C20(CA)RC30(CA)HIGHWAYSSEE TABLE 2DDISTANCE SEE TABLE 3ADVANCE WARNING SIGNSEE TABLE 1 CONE SPACING XL/3SEE NOTE 3CONE SPACING SEE TABLE 1 AND NOTE 14.3.2.1.closure details and requirements.for Lane Closure on Freeways and Expressways" plan for laneFor approach speeds over 50 MPH, use the "Traffic Control Systemexcept that C20(CA)L and W4-2L signs shall be used.Median lane closures shall conform to the details shown Length may be reduced by the Engineer to address site conditions.throughout extended work area.Place C30(CA) "LANE CLOSED" sign at 500’ to 1000’ intervals8.7.6.5.NOTES:LEGENDSIGN PANEL SIZE (Min)AND NOTE 1SEE TABLE 1LSEE NOTE 6100’ TO 150’ MinSEE NOTE 4SEE NOTE 2AND 7SEE NOTES 2AND 7SEE NOTES 2SEE NOTE 5or on a horizontal curve.Lane closures shall not begin at the top of crest vertical curvepossible for vehicles approaching the first flashing arrow sign.A minimum 1500’ of sight distance shall be provided whereends within the larger project’s limits.the lane closure unless the end of work area is obvious orA G20-2 "END ROAD WORK" sign shall be placed at the end oflane closure during hours of darkness.Flashing beacons shall be placed at the locations indicated forin size and shall be orange or fluorescent red-orange in color.flags for daytime closure. Each flag shall be at least 16" x 16"Each advance warning sign shall be equipped with at least twoclosures only.for traffic cones may be used instead of cones for daytimePortable delineators placed at one-half the spacing indicatedCOUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNED No.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIACIVIL 2018 STANDARD PLAN T111-29-18T11for lane closures.Provide at least one person to continuously maintain traffic control devicesspacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z forSee Standard Plan T9 for tables.Atifa FerouzC804023-31-19288May 31, 2018Return to Table of Contents STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNO SCALEENDROAD WORKCAHEADWORKROADALDACLOSEDAHEADRIGHT LANEAW20-1W4-2RL/2CBAXXMPHABW1-4RW13-1PL/3G20-2L/2ACSIGN PANEL SIZE (Min)B48" x 48"24" x 24"36" x 18"LEGEND TEMPORARY TRAFFIC CONTROL SIGNTRAFFIC CONEPORTABLE FLASHING BEACONFLASHING ARROW SIGN (FAS)FAS SUPPORT OR TRAILERSEE TABLE 1SEE TABLE 2SEE TABLE 1TRAFFIC CONTROL SYSTEMMULTILANE CONVENTIONALSEE NOTE 2SEE NOTE 2C20(CA)RHIGHWAYS AND EXPRESSWAYSCLOSEDA LANEC30(CA)FOR CHANGEABLE LANE CLOSURE ONTYPICAL CHANGEABLE LANE CLOSUREPAST WORK AREA100' MINIMUM TAPERSECONDARY DISTANCE SEE TABLE 3ADVANCE WARNING SIGNNOTES: AND NOTE 1SEE TABLE 1CONE SPACING YAND NOTE 1SEE TABLE 1CONE SPACING XCLOSEDA LANEC30(CA)PAST WORK AREA100' MINIMUM SEE TABLE 2SEE TABLE 1DLSEE NOTE 3AND NOTE 1SEE TABLE 1CONE SPACING ZSEE NOTE 4SEE NOTE 5SEE NOTE 6SEE NOTE 5SEE NOTE 4SEE NOTE 2SEE TABLE 1within the larger project's limits.lane closure unless the end of work area is obvious or endsA G20-2 "END ROAD WORK" sign shall be placed at the end of thehours of darkness.shall be placed at the locations indicated for lane closure duringshall be orange or fluorescent red-orange in color. Flashing beaconfor daytime closure. Each flag shall be at least 16" x 16" in size andEach advance warning sign shall be equipped with at least two flagstraffic cones may be used instead of cones for daytime closures only.Portable delineators placed at one-half the spacing indicated for3.2.1.SECONDARY SETUPINITIAL SETUPCOUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDNo.Exp.REG IS T ERED P ROFESSIONALENGINEERSTATEOFCALI FOR NIACIVIL NOTES:for lane closures.Provide at least one person to continuously maintain traffic control devicesspacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z forSee Standard Plan T9 for tables.Atifa FerouzC804023-31-212018REVISEDSTANDARDPLANRSPT11AW20-1AHEADWORKROADACDSEE TABLE 2All Rights Reservedc 2019 California Department of TransportationOctober 18, 2019REVISED STANDARD PLAN RSP T11ADATED MAY 31, 2018 - PAGE 289 OF THE STANDARD PLANS BOOK DATED 2018.RSP T11A DATED OCTOBER 18, 2019 SUPERSEDES STANDARD PLAN T11A.WORK AREAWORK AREAENDROAD WORKCG20-2STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONAND 7SEE NOTES 2CONE SPACING Y SEE TABLE 1 AND NOTES 1 AND 7SEE TABLE 37.6.5.4.is in place.Sign installations and cones are not required when a median barrierRemove W1-4R/W13-1P sign package.Relocate secondary taper to tangent location and relocate C30(CA) sign.extended work area.Place C30(CA) "LANE CLOSED" sign at 500' to 1000' intervals throughoutnot begin at the top of crest vertical curve or on a horizontal curve.vehicles approaching the first flashing arrow sign. Lane closures shallA minimum 1500' of sight distance shall be provided where possible for5-8-19SEE NOTES 3 AND 7TO ACCOMPANY PLANS DATED STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNOTES: WORK AREAENDROAD WORKENDROAD WORKCACAHEADWORKROADALLDAXXMPHBCLOSEDAHEADRIGHT LANEAW20-1W4-2RW1-4LCBAL/2L/2CBAXXMPHABW1-4RW13-1PW13-1PL/3AG20-2G20-2L/2AHEADWORKROADW20-1AHEADLEFT LANECLOSEDACSIGN PANEL SIZE (Min)B48" x 48"24" x 24"36" x 18"LEGEND NOTES: TEMPORARY TRAFFIC CONTROL SIGNTRAFFIC CONEPORTABLE FLASHING BEACONFLASHING ARROW SIGN (FAS)FAS SUPPORT OR TRAILERSEE TABLE 1SEE TABLE 2SEE TABLE 1SEE TABLE 1SEE TABLE 1TRAFFIC CONTROL SYSTEMMULTILANE CONVENTIONALFOR HALF ROAD CLOSURE ONDISTANCE SEE TABLE 3ADVANCE WARNING SIGNDISTANCE SEE TABLE 3ADVANCE WARNING SIGNAND TABLE 1 SEE NOTE 2SEE NOTE 2W4-2LSEE NOTE 2SEE NOTE 2AATYPICAL HALF ROAD CLOSUREC20(CA)RC20(CA)LHIGHWAYS AND EXPRESSWAYSspacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z forSEE NOTE 3AND NOTE 1SEE TABLE 1CONE SPACING XAND NOTE 1SEE TABLE 1CONE SPACING ZAND NOTE 1SEE TABLE 1CONE SPACING XSEE NOTE 3SEE NOTE 5SEE NOTE 5devices for lane closures.Provide at least one person to continuously maintain traffic controlSEE NOTE 2SEE NOTE 4SEE NOTE 7SEE NOTE 2SEE NOTE 4SEE NOTE 6150’ Min,100’ TO7.6.5.4.3.2.1.COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNED No.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIACIVILThe tangent (L/2) shall be used.Length may be reduced by the Engineer to address site conditions.more than the posted or maximum speed limit.W13-1P Plaque will not be required when advidory speed isAdvisory speed will be determined by the Engineer, Theon a horizontal curve.Lane closures shall not begin at the top of crest verticle curve orpossible for vehicles approaching the first flashing arrow sign.A minimum 1500’ sight distance shall be provided wherelarger project’s limits.closure unless the end of work area is obvious or ends within theA G20-2 "END ROAD WORK" sign, shall be placed at the end of the laneduring hours of darkness.beacons shall be placed at the locations indicated for lane closureand shall be orange or fluorescent red-orange in color. Flashingfor daytime closure. Each flag shall be at least 16" x 16" in sizeEach advance warning sign shall be equipped with at least two flagsonly.traffic cones may be used instead of cones for daytime closuresPortable delineators placed at one-half the spacing indicated for2018 STANDARD PLAN T121-29-18T12See Standard Plan T9 for tables.Atifa FerouzC804023-31-19290May 31, 2018Return to Table of Contents STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONAHEADRAMPCLOSEDAHEADRAMPCLOSEDAHEADARAMPCLOSEDAHEADARAMPCLOSEDRAMPCLOSEDEXITUSE NEXTCLOSEDLANEABAACR3-2CLOSEDCR3-1RAMPCLOSEDAHEADRAMPCLOSEDCLOSEDBRAMPRAMPCLOSEDAHEADRAMPCLOSEDBCR3-2B SEE TABLE 3ASEE TABLE 1L/3SEE TABLE 3BSEE TABLE 3ASEE TABLE 3BSEE TABLE 1L/3ASEE TABLE 3BAHEADRAMPCLOSEDAEXITUSE NEXTRAMPCLOSEDSTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONSTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONCLOSEDRAMPAHEADRAMPCLOSEDR3-1CSEE TABLE 3ASEE TABLE 3BBARRICADES, Min 3 PER LANE.ENTRANCE RAMP EXIT RAMP OR CONNECTORBARRICADES, Min 3 PER LANE.ENTRANCE RAMP SHOULDEREXIT RAMP OR CONNECTORSHOULDERTRAFFIC CONTROL SYSTEMFOR RAMP CLOSUREDISTANCE SEE TABLE 3ADVANCE WARNING SIGNDISTANCE SEE TABLE 3ADVANCE WARNING SIGN BARRICADESTRAFFIC CONE ABCD 48" x 36"48" x 48"48" x 30"36" x 36"C38(CA)C38(CA)C30(CA)C30(CA)C30(CA)C2(CA)C19(CA)C19(CA)C19(CA)C2(CA)C19(CA)C19(CA)C19(CA)C2(CA)C30(CA)C19(CA)C19(CA)AAADDAAAspacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z forCONTROL SIGNTEMPORARY TRAFFICBEACONPORTABLE FLASHING NOTES:SEE NOTE 2AND NOTE 1CONE SPACING X SEE TABLE 1AND NOTE 1CONE SPACING X SEE TABLE 1SEE NOTE 2SEE NOTE 3AND NOTE 1CONE SPACING X SEE TABLE 1SEE NOTE 4AND NOTE 1CONE SPACING X SEE TABLE 1SEE NOTE 4SEE NOTE 3SEE NOTE 4SEE NOTES 2 AND 4RAMP3 CONES PER LANE CLOSED, SEE NOTE 6SEE NOTE 3Min 3 PER LANE.BARRICADES,LEGENDSIGN PANEL SIZE (Min)NOTES:EXIT RAMP OR CONNECTOREXIT RAMP OR CONNECTOR WITH ADDITIONAL LANEENTRANCE RAMP WITHOUT TURNING POCKETSENTRANCE RAMP WITH TURNING POCKETSTYPICAL RAMP CLOSURES2 AND 4SEE NOTES5 AND 7SEE NOTESSEE NOTE 3Min 3 PER LANE.BARRICADES,2 AND 4SEE NOTESC2(CA)5 AND 7SEE NOTES2 AND 4SEE NOTESSEE NOTE 72 AND 4SEE NOTESSEE NOTE 63 CONES PER LANE CLOSED,2 AND 4SEE NOTESSEE NOTE 7SEE TABLE 3ASEE TABLE 3A7.6.5.4.3. 2.1.devices for lane closures.Provide at least one person to continuously maintain traffic controlC2(CA) sign shall be black and white.closed lane and shoulder.A minimum of 3 cones shall be placed transversely across eachThe existing "EXIT" signs shall be covered during ramp closures.be the same as the guide sign.that refer to the closed ramp. The letter size on the overlay shall"closed" may be mounted. As directed by the Engineer on all guide signs"RAMP CLOSED" signs, black on orange overlay plates with the wordIn addition to placing the C19(CA) "RAMP CLOSED AHEAD" and C30(CA)less and Type ˛˛˛ for closures lasting longer than one week.Barricades shall be Type ˛, ˛˛ or ˛˛˛ for closures lastind one week orthe first C19(CA) sign during hours of darkness.red-orange in color. A flashing beacon shall be placed on top ofbe at least 16" x 16" in size and shall be orange or fluorescent equipped with at least two flags for daytime closure. Each flag shall Each advance warning C19(CA) "RAMP CLOSED AHEAD" sign shall betraffic cones may be used instead of cones for daytime closures only.Portable delineators placed at one-half the spacing indicated for2018 STANDARD PLAN T141-29-18T14See Standard Plan T9 for tables.PLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistCOUNTYROUTEPOST MILESTOTAL PROJECTSHEETNo.TOTALSHEETSTHE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORTHE ACCURACY OR COMPLETENESS OF SCANNEDCOPIES OF THIS PLAN SHEET.No.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIACIVIL Atifa FerouzC804023-31-19292May 31, 2018Return to Table of Contents COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERCIVILDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDBARRICADER9-11aR9-9R9-9AHEADWORKROADW20-1WORK AREAR9-11a DEPARTMENT OF TRANSPORTATIONSTATE OF CALIFORNIANO SCALELEGEND:NOTES:SIDEWALK CLOSEDCROSS HERESIDEWALKCLOSEDSIDEWALKCLOSEDSIDEWALK CLOSED CROSS HERE 1.2.3.SEE NOTE 3SEE NOTE 2SEE NOTE 2SIGN PANEL SIZE (Min)NOTES:PORTABLE FLASHING BEACONTRAFFIC CONESIGNAND PEDESTRIAN DETOURTYPICAL SIDEWALK CLOSURETEMPORARY PEDESTRIAN ACCESS ROUTESSIGN DESIGNATIONSIGN OR PLAQUESIGN SIZE24" x 12"24" x 18"SIDEWALK CLOSEDR9-9R9-11SIDEWALK CLOSED AHEADCROSS HERE24" x 12"R9-11aCROSS HERESIDEWALK CLOSED36" x 36"ROAD WORK AHEADW20-1fluorescent red-orange in color.Sign shall be equipped with at least two flags for daytime closure. Each flag shall be orange orAdvance warning sign is not required if the work area is within the limits of a larger work zone.allow pedestrian access.there are destination points between the detour and the work area. Locate the R9-11 sign toBarricades closing sidewalk shall cover the full width of the sidewalk. Use R9-11 sign whenOnly signs related to pedestrians are shown. For all other signs see appropriate T-sheets.SIGN ON BARRICADETEMPORARY TRAFFIC CONTROL2018 STANDARD PLAN T30on this sheet.per Table 1 unless X,Y, or Z cone spacing is shownsegment or Z for conflict situations, as appropriate,Use cone spacing X for taper segment, Y for tangentSee Standard Plan T9 for tables.1-29-18T30Atifa FerouzC804023-31-19296May 31, 2018Return to Table of Contents COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERCIVILDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDNOTES:BARRICADETEMPORARY CURB RAMPCHANNELIZING DEVICEWORK AREATEMPORARY BARRIER IF NEXT TO TRAFFICLEGEND:AHEADWORKROADW20-1R9-9SIDEWALKCLOSEDR9-9SIDEWALKCLOSEDDEPARTMENT OF TRANSPORTATIONSTATE OF CALIFORNIANO SCALENOTES:SEE NOTE 448" Min TO 60" Max (SEE NOTE 8)PORTABLE FLASHING BEACONTRAFFIC CONETEMPORARY TRAFFIC CONTROL SIGNSIGN ON BARRICADETEMPORARY TRAFFIC CONTROL1.2.3.4.5.6.7.8.TYPICAL SIDEWALK DIVERSION WITHIN ROADBEDTEMPORARY PEDESTRIAN ACCESS ROUTES9.10.SIGN PANEL SIZE (Min)SIGN DESIGNATIONSIGN OR PLAQUESIGN SIZE30" x 24"24" x 12"36" x 36"ROAD WORK AHEADW20-1PEDESTRIAN DETOURSIDEWALK CLOSEDM4-9bR9-9M4-9bDETOURM4-9bDETOUR2018 STANDARD PLAN T311-29-18T31on this sheet.per Table 1 unless X,Y, or Z cone spacing is shownsegment or Z for conflict situations, as appropriate,Use cone spacing X for taper segment, Y for tangentSee Standard Plan T9 for tables.See Standard Plan T34 for temporary curb ramp options.See Standard Plan A88A for detectable warning surface for curb ramps to apply to temporary curb ramps.maintain a minimum width of 48 inches and provide a 60 X 60-inch passing space at least every 200 feet.When it is not possible to maintain a minumum of 60 inches throughout the length of the pedestrian route,Separate the temporary pedestrian access route from traffic using a temporary barrier and a crash cushion if necessary.Barricades closing sidewalk shall cover the full width of the sidewalk.pedestrians to stray from the channelized path.All devices used to channelize pedestrian flow must connect such that gaps do not allowequipped with at least two flags for daytime closure. Each flag shall be orange or fluorescent red-orange in color.Advance warning sign is not required if the work area is within the limits of a larger work zone. Sign shall beThe temporary pedestrian access route must not lead into conflict with vehicles or work.Separate pedestrian walkway from traffic and work zone activities, when temporary walkway is adjacent to traffic.Only signs related to pedestrians are shown. For all other signs see appropriate T-sheets.Atifa FerouzC804023-31-19297May 31, 2018Return to Table of Contents COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERCIVILDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDR9-10WORK AREASIDEWALK CLOSEDUSE OTHER SIDEW11-2W16-9PAHEADR9-9SIDEWALKCLOSEDAHEADWORKROADW20-1W11-2W16-7PW11-2W16-9PAHEADR9-11aSIDEWALK CLOSEDCROSS HEREW11-2W16-7PR9-10SIDEWALK CLOSEDUSE OTHER SIDEAHEADWORKROADW20-1DEPARTMENT OF TRANSPORTATIONSTATE OF CALIFORNIANO SCALENOTES:BARRICADELEGEND:PORTABLE FLASHING BEACONTRAFFIC CONETEMPORARY TRAFFIC CONTROL SIGNSIGN ON BARRICADETEMPORARY TRAFFIC CONTROLSEE NOTE 3SEE NOTE 2SEE NOTE 2R9-9SIDEWALKCLOSEDNOTES:1.2.3.AND PEDESTRIAN DETOURTYPICAL SIDEWALK/CROSSWALK CLOSURETEMPORARY PEDESTRIAN ACCESS ROUTESor fluorescent red-orange in color.Sign shall be equipped with at least two flags for daytime closure. Each flag shall be orangeAdvance warning sign is not required if the work area is within the limits of a larger work zone.allow pedestrian access.there are destination points between the detour and the work area. Locate the R9-11 sign toBarricades closing sidewalk shall cover the full width of the sidewalk. Use R9-11 sign whenOnly signs related to pedestrians are shown. For all other signs see appropriate T-sheets.R9-11aSIDEWALK CLOSEDCROSS HERESIGN PANEL SIZE (Min)SIGN DESIGNATIONSIGN OR PLAQUESIGN SIZE24" x 12"24" x 12"SIDEWALK CLOSEDR9-9R9-1024" x 18"R9-11CROSS HERE24" x 12"SIDEWALK CLOSEDR9-11a36" x 36"W11-224" x 12"W16-7P24" x 12"W16-9PUSE OTHER SIDESIDEWALK CLOSED AHEADSIDEWALK CLOSEDCROSS HEREPEDESTRIAN36" x 36"ROAD WORK AHEADW20-1AHEAD (PLAQUE)POINTING ARROW (PLAQUE)DIAGONAL DOWNWARD2018 STANDARD PLAN T32on this sheet.per Table 1 unless X,Y, or Z cone spacing is shownsegment or Z for conflict situations, as appropriate,Use cone spacing X for taper segment, Y for tangentSee Standard Plan T9 for tables.1-29-18T323-31-19C80402Atifa Ferouz298May 31, 2018Return to Table of Contents RAMPNO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONACCESS ROUTESTEMPORARY PEDESTRIANCOUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERCIVILDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNED ABCDEFGHHAND RAILEDGE PROTECTIONRAMPTOP LANDINGBOTTOM LANDINGSLOPECROSS SLOPEWIDTHLENGTHRIGHT SIDEHEIGHTLEFT SIDEHEIGHTRIGHT SIDERAILLEFT SIDERAIL8.3% OR LESS2.0% OR LESSOR GREATER48 INCHESOR LESS30 FEETFROM GROUNDINCHESWITHIN 2FROM GROUNDINCHESWITHIN 2 JK LMNOPICROSS SLOPEWIDTHDEPTHCROSS SLOPEWIDTHDEPTH2.0% OR LESS2.0% OR LESSOR GREATER48 INCHESOR GREATER60 INCHES2.0% OR LESS2.0% OR LESSOR GREATER48 INCHESOR GREATER60 INCHESABCDJILKPONMBOTTOM LANDINGRAMPTOP LANDING INCHES34 TO 38INCHES34 TO 38SLOPESLOPE2018 STANDARD PLAN T331-29-18T33Atifa FerouzC804023-31-19299May 31, 2018Return to Table of Contents NO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONB A F G G F E D C A B GFEDCAB K K K CURB RAMP OPTIONSACCESS ROUTESTEMPORARY PEDESTRIANCOUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERCIVILDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDSI D E WA L K SI D E WA L K R A MP R A MP SI D E WA L K SIDEWA L K SIDEWALK R A MP C E DOPTION CSHOWN WITH SIDE EDGEPARALLEL RAMPOPTION COPTION BOPTION ASHOWN WITH SIDE APRONSHOWN WITH SIDE EDGE ABCDCURB RAMPTOP LANDINGEFGKNOTES:For a maximum rise of 6 inches a slope between 1:12 to 1:10 is allowed.For a maximum rise of 3 inches a slope between 1:10 to 1:8 is allowed.SLOPECROSS SLOPEWIDTHCROSS SLOPEWIDTHDEPTH8.3% OR LESS2.0% OR LESSOR GREATER48 INCHES2.0% OR LESS2.0% OR LESSOR GREATER48 INCHESOR GREATER60 INCHESMA XI MU M) (10 P E R C E N T S L O P E 1:1 0 MA XI MU M) (10 P E R C E N T S L O P E 1:1 0 SURFACEWARNINGDETECTABLEDEPTH36 INCHESMINIMUMSLOPEwith space limitations, the following slopes are allowed:If the above requirements cannot be met, on existing sites2018 STANDARD PLAN T341-29-18T34Atifa FerouzC804023-31-19300May 31, 2018Return to Table of Contents STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION NOTICE OF MATERIALS TO BE USED CEM-3101 (REV 09/2015) CT#7541-3511-1 NOTICE OF MATERIALS TO BE USED INSTRUCTIONS TO PERMITTEE/CONTRACTOR Section 6 of the State Standard Specifications states that, "Before the preconstruction conference, submit material source information on a Notice of Materials to Be Used form". To avoid delay in approval of materials, the Department of Transportation must receive, in a timely manner, Form CEM-3101, "Notice of Materials to Be Used." When filing this form, please comply with the following instructions: 1. The Contract Number/Permit Number and job limits should be the same as they appear on the special provisions/encroachment permit. 2. The column headed "Contract Bid Item Number" refers to the sequential item number of the contract, if applicable. 3. The column headed "Item Code" refers to the number for which the material is to be used, if applicable. It is a six-digit number. 4. The column headed "Contract Item Description" refers to an item description of the material as described in the special provisions or an item description to be used on the permitted project. 5. The columns headed "Item Component" refer to the specific description of material to be used, not necessarily the name of the contract item. For Example: Contract Bid Item Number Item Code Contract Item Description Item Component Item Sub-Component 1 520101 Bar Reinforcing steel Coupler (service splice) Service Splice, CJP welded 6. The column headed "Manufacturer/Provider" refers to the manufacturer/fabricator of the item. List the name, address, and email of the Manufacturer/Fabricator. Also, list the name and address of the location where inspection will occur, if different from the Manufacturer/Fabricator. 7. Form CEM-3101, "Notice of Materials to Be Used," must be submitted to the resident engineer (RE). The RE will email Form CEM-3101 to the materials administrator to: MaterialsAdministratorMETS@dot.ca.gov or fax to (916) 227-7084, Attn: Materials Administrator or postal mail to: Materials Engineering and Testing Services, 5900 Folsom Blvd., Sacramento, CA 95819, MS-5. If the sources of materials are not known at the beginning of a contract, submit a Form CEM-3101, "Notice of Materials to Be Used," for a given bid item as soon as a provider is known. Multiple submissions may be necessary. Submit a Form CEM-3101, "Notice of Materials to Be Used," for all changes or revisions. When placing orders for materials that require inspection prior to shipment, be sure to indicate on your request form that state inspection is required before shipment. Resident Engineer: Caltrans Permit Inspector - Jim McKrell Date: Materials required for use under Contract Number (1) Encroachment Permit Number - 0522-6DP-0544 District: 05 County: SLO Route: 101 Post Mile: 27.305/27.441 will be obtained from the following sources: Contract Bid Item Number (2) Item Code (3) Contract Item Description (4) Item Component (5) Manufacturer/Provider Name and Address (5) Manufacturer/Provider Email Address (6) It is requested that you arrange for sampling, testing and inspection of materials prior to delivery in accordance with Section 6 of the Standard Specifications. It is understood that source inspection does not relieve the prime contractor of the full responsibility for incorporating into the work, materials that comply in all respects with the contract plans and specifications, nor does it preclude the subsequent rejection of materials found to be unsuitable. Contractor Address Business Phone Business Fax E-Mail Address STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION NOTICE OF MATERIALS TO BE USED CEM-3101 (REV 09/2015) ADA Notice For individuals with sensory disabilities, this document is available in alternate formats. For alternate format information, contact the Forms Management Unit at (916) 445-1233, TTY 711, or write to Records and Forms Management, 1120 N Street, MS-89, Sacramento, CA 95814. (7) Copies: Materials Administrator, Mail Station #5 Materials Engineering & Testing Services 5900 Folsom Blvd, Sacramento, CA 95819 MaterialsAdministratorMETS@dot.ca.gov Fax: (916) 227-7084 At the completion of the permitted work, please complete the form below and submit an electronic copy of this page sent by email to alan.kwong@dot.ca.gov. STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION NOTICE OF COMPLETION TR-0128 (REV. 6/2001) CT #7541-5529-1 PERMIT # 0522 6DP 0544 Permit Inspector: Jim McKrell Dear Sir or Madam: All work authorized by the above numbered permit was completed on: DATE: SIGNATURE OF PERMITTEE: Gregg Drilling, LLC FM 92 1546 M ADA Notice For individuals with sensory disabilities, this document is available in alternate formats. For alternate format information, contact the Forms Management Unit at (916) 445-1233, TTY 711, or write to Records and Forms Management, 1120 N Street, MS-89, Sacramento, CA 95814 Copyright 2018 California Department of Transportation. All rights reserved. ADA Notice For individuals with sensory disabilities, this document is available in alternate formats. For alternate format information, contact the Forms Management Unit at (916) 445-1233, TTY 711, or write to Records and Forms Management, 1120 N Street, MS-89, Sacramento, CA 95814. 1. COUNTY San Luis Obispo 2. ROUTE 101 3. POST MILE SLO 27.305 4. ADDRESS OR STREET NAME SB 101 Madonna Rd. on ramp 5. CITY San Luis Obispo 6. CROSS STREET (Distance and direction from project site) Madonna Rd. NW 7. WORK TO BE PERFORMED BY APPLICANT CONTRACTOR 8. IS THIS APPLICATION FOR THE CONTRACTOR'S (DOUBLE) PERMIT? NO YES.If "YES", provide the Parent Permit Number 0522 NSV 0140 9. ESTIMATE START DATE 6/01/2022 10. ESTIMATED COMPLETION DATE 07/30/2022 11. ESTIMATED NUMBER OF WORKING DAYS WITHIN STATE HIGHWAY RIGHT-OF-WAY 3 12. ESTIMATED CONSTRUCTION COSTS WITHIN STATE HIGHWAY RIGHT-OF-WAY $40,000 13. HAS THE PROJECT BEEN REVIEWED BY ANOTHER CALTRANS BRANCH? NO YES. If "YES", which branch? 14. FUNDING SOURCE(S) FEDERAL STATE LOCAL PRIVATE SB 1 (ROAD REPAIR AND ACCOUNTABILITY ACT OF 2017) 15. CALTRANS PROJECT CODE (ID) N/A 16. APPLICANT'S REFERENCE / UTILITY WORK ORDER NUMBER 91506A STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION STANDARD ENCROACHMENT PERMIT APPLICATION TR-0100 (REV 12/2018) Complete ALL fields, write "N/A" if not applicable. Type or print clearly. This application is not complete until all requirements have been approved. Permission is requested to encroach on the State Highway right-of-way as follows: FOR CALTRANS USE TRACKING NO. DIST/CO/RTE/PM SIMPLEX STAMP DATE OF SIMPLEX STAMP Page 1 of 4 17. DESCRIBE WORK TO BE DONE WITHIN STATE HIGHWAY RIGHT-OF-WAY (in 20 lines or less) Attach 6 complete sets of plans (folded to 8.5" x 11") and any applicable specifications, calculations, maps, traffic control plans, etc. At exploratory location B-17, 3 borings will be drilled using direct push methods to a depth of 70-ft below ground surface. Depth discrete soil and ground water samples will be taken to analyze water quality. After borings are completed, the test holes will be backfilled per standard DWR bulletin 74-90 and the projects contracts documents At exploratory location B-12, 3 borings will be drilled using direct push methods to a depth of 70-ft below ground surface. Depth discrete soil and ground water samples will be taken to analyze water quality. After borings are completed, the test holes will be backfilled per standard DWR bulletin 74-90 and the projects contracts documentssaw cut and repair asphalt, 2-ft wide by 18-ft long per city standards, the asphalt replacement will be 10-inches thick based on city standard 6020. 18 (a). PORTION OF STATE HIGHWAY RIGHT-OF-WAY WHERE WORK IS BEING PROPOSED (check all that apply) Traffic lane Shoulder Sidewalk Median At or near an intersection Mobile work Outside of the shoulder, feet from edge of pavement30 Other 18 (b). PROPOSED TRAFFIC CONTROL PLANS AND METHOD No traffic control needed State Standard Plans (T-Sheets) # Project specific Traffic Control Plans included To be submitted by contractor 0522 6DP 0544 05-SLO-101-27.305/27.441 05/20/2022 STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION STANDARD ENCROACHMENT PERMIT APPLICATION TR-0100 (REV 12/2018) TRACKING NO. Page 2 of 4 ADA Notice For individuals with sensory disabilities, this document is available in alternate formats. For alternate format information, contact the Forms Management Unit at (916) 445-1233, TTY 711, or write to Records and Forms Management, 1120 N Street, MS-89, Sacramento, CA 95814. 19. EXCAVATION MAX. DEPTH (in) N/A MIN. DEPTH (in) N/A AVG. WIDTH (in) N/A LENGTH (ft) N/A SURFACE TYPE (e.g. Asphalt, concrete, soil, etc.) B-17 soil, B-12 asphalt 20. PIPES PRODUCT BEING TRANSPORTED N/A CARRIER PIPE DIAMETER N/A MATERIAL N/A(in.) CASING PIPE DIAMETER N/A MATERIAL N/A(in.) PROPOSED INSTALLATION METHOD (e.g. HDD, Bore & Jack, Open Cut, etc.) Direct Push Sampling, CPT VOLTAGE / PSIG 21. IS A CITY, COUNTY OR OTHER PUBLIC AGENCY INVOLVED IN THE APPROVAL OF THIS PROJECT? DOES THE PROPOSED PROJECT INVOLVE THE REPLACEMENT AND/OR ABANDONMENT OF AN EXISTING FACILITY? NO YES. If "YES", provide a description YES (if "YES", check the type of project AND attach the environmental documentation and conditions of approval) NO (if "NO", check the category below which best describes the project AND answer questions A-K) COMMERCIAL DEVELOPMENT BUILDING GRADING OTHER CATEGORICALLY EXEMPT NEGATIVE DECLARATION ENVIRONMENTAL IMPACT REPORT OTHER DRIVEWAY OR ROAD APPROACH, RECONSTRUCTION, MAINTENANCE OR RESURFACING FENCE EROSION CONTROL PUBLIC UTILITY MODIFICATION, EXTENSIONS, HOOKUPS MAILBOX LANDSCAPING FLAGS, SIGNS, BANNERS, DECORATIONS, PARADES AND CELEBRATIONS OTHER The following questions must be answered when a City, County or other public agency IS NOT involved in the approval of this project . Your answers to these questions will assist Caltrans staff in identifying any physical, biological, social or economic resources that may be affected by your proposed project within State Highway right-of-way and to determine which type of environmental studies may be required to approve your application for an encroachment permit. It is the applicant's responsibility for the production of all required environmental documentation and supporting studies and in some cases this may be costly and time consuming. If possible, attach photographs of the location of the proposed project. Answer these questions to the best of your ability. Provide a description of any "YES" answers (type, name, number, etc.). A. Will any existing vegetation and/or landscaping within State Highway right-of-way be disturbed? No B. Are there waterways (e.g. river, creek, pond, natural pool or dry streambed) adjacent to or within the limits of the proposed project? No C. Is the proposed project located within five miles of the coast line? No D. Will the proposed project generate construction noise levels greater than 86 decibels (dBA) (e.g. Jack-hammering, pile driving)? No E. Will the proposed project incorporate land from a public park, recreation area or wildlife refuge open to the public? No F. Are there any recreational trails or paths within the limits of the proposed project? No G. Will the proposed project impact any structures, buildings, rail lines or bridges within State Highway right-of-way? No H. Will the proposed project impact access to any businesses or residences? No I. Will the proposed project impact any existing public utilities or public services? No J. Will the proposed project impact any existing pedestrian facilities, such as sidewalks, crosswalks or overcrossings? No K. Will new lighting be constructed within or adjacent to State Highway right-of-way? No 0522 6DP 0544 STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION STANDARD ENCROACHMENT PERMIT APPLICATION TR-0100 (REV 12/2018) TRACKING NO. Page 3 of 4 ADA Notice For individuals with sensory disabilities, this document is available in alternate formats. For alternate format information, contact the Forms Management Unit at (916) 445-1233, TTY 711, or write to Records and Forms Management, 1120 N Street, MS-89, Sacramento, CA 95814. 22. Will the proposed project cause a substantial change in the significance of a historical resource (45 years or older), or cultural resource?YES NO (if "YES", provide a description) 23. Will the proposed project be on an existing State Highway or street where the activity involves removal of a scenic resource? (e.g. A significant tree or stand of trees, a rock outcropping or a historic building)YES NO (if "YES", provide a description) 24. Is work being done on the applicant's property in addition to State Highway right-of-way?YES NO (If "YES", attach 6 complete sets of site and grading plans) 25. Will the proposed project require the disturbance of soil?YES NO If "YES", estimate the area of disturbed soil within State Highway right-of-way in acres:0.05 and estimate the area of disturbed soil outside State Highway right-of-way in acres:0.01 26. Will the proposed project require dewatering?YES NO If "YES", estimate Total gallons AND gallons/month.(Total gallons) AND (gallons/month) SOURCE*:STORMWATER NON-STORMWATER (*See Caltrans SWMP for definition of non-storm water discharge: http://www.dot.ca.gov/env/stormwater/ ) 27. How will any storm water or ground water be disposed? Storm Drain System Combined Sewer / Stormwater System Stormwater Retention Basin N/A Other (explain)Stored in 55 gallon drums at acceptable location prior to disposal 0522 6DP 0544 STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION STANDARD ENCROACHMENT PERMIT APPLICATION TR-0100 (REV 12/2018) TRACKING NO. Page 4 of 4 ADA Notice For individuals with sensory disabilities, this document is available in alternate formats. For alternate format information, contact the Forms Management Unit at (916) 445-1233, TTY 711, or write to Records and Forms Management, 1120 N Street, MS-89, Sacramento, CA 95814. READ THE FOLLOWING CLAUSES PRIOR TO SIGNING THIS ENCROACHMENT PERMIT APPLICATION. The applicant’s submission of this application to the California Department of Transportation constitutes the applicant’s agreement and representation that the work or other activity contemplated by the encroachment permit application shall comply with all applicable standards, specifications, policies, requirements, conditions, and regulations of the California Department of Transportation, and the applicant understands the application may be denied if there is non-compliance with any of the above. An exception process exists and may result in approval of a non-compliant encroachment, in the discretion of the California Department of Transportation, but the exception process may require additional time to complete. The applicant understands and agrees all work or other activity contemplated by the encroachment permit application is subject to inspection and oversight by the California Department of Transportation. The applicant understands and agrees encroachment permit fees must still be paid if an application is withdrawn or denied. The applicant understands a denial may be appealed, in accordance with California Streets and Highways Code, Section 671.5, and the related regulations found in California Code of Regulations, Title 21, Division 2, Chapter 8, Article 2. The applicant understands and agrees that immediately upon issuance of the encroachment permit the applicant is bound by, subject to, and must comply with the "Encroachment Permit General Provisions" (TR-0045), "Stormwater Special Provisions" (TR-0400) and any other applicable Special Provisions and Conditions of the encroachment permit. The "Encroachment Permit General Provisions" (TR-0045), and the Stormwater Special Provisions (TR-0400) are available at: http://www.dot.ca.gov/trafficops/ep/docs/Appendix_K_(WEB).pdf. If a paper copy is needed of the "Encroachment Permit General Provisions" (TR-0045) and/or "Stormwater Special Provisions" (TR-0400), please contact the District Office of Encroachment Permits. Their contact information is available at: http://www.dot.ca.gov/trafficops/ep/docs/ Appendix_G_(WEB).pdf. The "Encroachment Permit General Provisions" (TR-0045) and any other applicable Special Provisions and Conditions will be provided as part of the encroachment permit. Information about Stormwater requirements is available at the Internet address: http://www.dot.ca.gov/hq/construc/stormwater/. The applicant understands an encroachment permit may be denied, revoked, and/or a bond may be required, for non-payment of prior or present encroachment permit fees. An encroachment permit is not a property right and does not transfer with the property to a new owner. Each of the persons purporting to execute this application on behalf of the applicant and/or on behalf of the applicant’s authorized agent or engineer represents and warrants such person has full and complete legal authority to do so and to thereby bind applicant to the terms and conditions herein and to the terms and/or conditions of the encroachment permit. Applicant understands and agrees this application may be executed in one or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. Executed copies of this application and/or its counterparts may be reproduced and/or exchanged by copy machine, mailing, facsimile, or electronic means (such as e-mail), and such copies shall be deemed to be effective as originals. 28. NAME OF APPLICANT (Project or Property Owner or Organization) Gregg Drilling, LLC ADDRESS OF APPLICANT (Include City, State and Zip Code) 2726 Walnut Ave Signal Hill CA 90755 E-MAIL ADDRESS bsavela@greggdrilling.com PHONE NUMBER 562-427-6899 FAX NUMBER 562-424-2329 29. NAME OF AUTHORIZED AGENT / ENGINEER (A "Letter of Authorization" is required if different from #28) IS A LETTER OF AUTHORIZATION ATTACHED? YES NO ADDRESS OF AUTHORIZED AGENT / ENGINEER (Include City, State and Zip Code) E-MAIL ADDRESS PHONE NUMBER FAX NUMBER 30. NAME OF BILLING CONTACT (Same as #28 Same as #29 ) BILLING ADDRESS WHERE INVOICE(S) IS / ARE TO BE MAILED (Include City, State and Zip Code) E-MAIL ADDRESS PHONE NUMBER FAX NUMBER * I hereby certify under penalty of perjury under the laws of the State of California that the information in this application and any document submitted with or in support of this application are true and correct to the best of my knowledge and belief, and that copies of any documents submitted with or in support of this application are true and correct copies of unaltered original documents. I further understand that if I have provided information that is false, intentionally incomplete, or misleading I may be charged with a crime and subjected to fine or imprisonment, or both fine and imprisonment. (Penal Code Section 72) 31. SIGNATURE OF APPLICANT OR AUTHORIZED AGENT*32. PRINT OR TYPE NAME Brian Savela 33. TITLE Regional Manager 34. DATE 05/20/2022 Brian Savela Digitally signed by Brian Savela Date: 2022.05.20 06:00:28 -07'00' 0522 6DP 0544 INSR ADDL SUBR LTR INSR WVD DATE (MM/DD/YYYY) PRODUCER CONTACT NAME: FAXPHONE (A/C, No):(A/C, No, Ext): E-MAIL ADDRESS: INSURER A : INSURED INSURER B : INSURER C : INSURER D : INSURER E : INSURER F : POLICY NUMBER POLICY EFF POLICY EXPTYPE OF INSURANCE LIMITS(MM/DD/YYYY)(MM/DD/YYYY) COMMERCIAL GENERAL LIABILITY AUTOMOBILE LIABILITY UMBRELLA LIAB EXCESS LIAB WORKERS COMPENSATION AND EMPLOYERS' LIABILITY DESCRIPTION OF OPERATIONS / LOCATIONS / VEHICLES (ACORD 101, Additional Remarks Schedule, may be attached if more space is required) AUTHORIZED REPRESENTATIVE INSURER(S) AFFORDING COVERAGE NAIC # Y / N N / A (Mandatory in NH) ANY PROPRIETOR/PARTNER/EXECUTIVE OFFICER/MEMBER EXCLUDED? EACH OCCURRENCE $ DAMAGE TO RENTED $PREMISES (Ea occurrence)CLAIMS-MADE OCCUR MED EXP (Any one person)$ PERSONAL & ADV INJURY $ GENERAL AGGREGATE $GEN'L AGGREGATE LIMIT APPLIES PER: PRODUCTS - COMP/OP AGG $ $ PRO- OTHER: LOCJECT COMBINED SINGLE LIMIT $(Ea accident) BODILY INJURY (Per person)$ANY AUTO OWNED SCHEDULED BODILY INJURY (Per accident)$AUTOS ONLY AUTOS AUTOS ONLY HIRED PROPERTY DAMAGE $AUTOS ONLY (Per accident) $ OCCUR EACH OCCURRENCE $ CLAIMS-MADE AGGREGATE $ DED RETENTION $$ PER OTH- STATUTE ER E.L. EACH ACCIDENT $ E.L. DISEASE - EA EMPLOYEE $ If yes, describe under E.L. DISEASE - POLICY LIMIT $DESCRIPTION OF OPERATIONS below POLICY NON-OWNED SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELIVERED IN ACCORDANCE WITH THE POLICY PROVISIONS. THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIOD INDICATED. NOTWITHSTANDING ANY REQUIREMENT, TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH THIS CERTIFICATE MAY BE ISSUED OR MAY PERTAIN, THE INSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERMS, EXCLUSIONS AND CONDITIONS OF SUCH POLICIES. LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS. THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER. THIS CERTIFICATE DOES NOT AFFIRMATIVELY OR NEGATIVELY AMEND, EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICIES BELOW. THIS CERTIFICATE OF INSURANCE DOES NOT CONSTITUTE A CONTRACT BETWEEN THE ISSUING INSURER(S), AUTHORIZED REPRESENTATIVE OR PRODUCER, AND THE CERTIFICATE HOLDER. IMPORTANT: If the certificate holder is an ADDITIONAL INSURED, the policy(ies) must have ADDITIONAL INSURED provisions or be endorsed. If SUBROGATION IS WAIVED, subject to the terms and conditions of the policy, certain policies may require an endorsement. A statement on this certificate does not confer any rights to the certificate holder in lieu of such endorsement(s). COVERAGES CERTIFICATE NUMBER:REVISION NUMBER: CERTIFICATE HOLDER CANCELLATION © 1988-2015 ACORD CORPORATION. All rights reserved. The ACORD name and logo are registered marks of ACORDACORD 25 (2016/03) ACORDTM CERTIFICATE OF LIABILITY INSURANCE Zurich American Insurance Company American Guarantee & Liability Ins Co. Steadfast Insurance Company 5/13/2022 USI Insurance Services NW CL 601 Union Street, Suite 1000 Seattle, WA 98101 Heidi Solem 206-577-6818 610-362-8530 heidi.solem@usi.com Gregg Drilling, LLC 2726 Walnut Ave Signal Hill, CA 90755 16535 26247 26387 A X X X BI/PD Ded:25000 X X X GLO552517009 07/01/2021 07/01/2022 1,000,000 500,000 10,000 1,000,000 2,000,000 2,000,000 B X X X X X BAP926750611 07/01/2021 07/01/2022 1,000,000 B X X X 10000 X X SXS329280300 07/01/2021 07/01/2022 10,000,000 10,000,000 A N X WC926749111 07/01/2021 07/01/2022 X 1,000,000 1,000,000 1,000,000 C C Pollution Liab Professional Liab X X X X PEC667250502 PEC667250502 07/01/2021 07/01/2021 07/01/2022 07/01/2022 $10,000,000 Limit & Agg $10,000,000 Limit & Agg Re: Permit Number 0522NSV0140 The State of California, California Dept of Transportation, the directors, officers, employees, and/or agents of the State of California and/or the California Dept of Transportation are included as Additional Insured under General, Auto, Pollution and Excess Liability policies where required by written contract or agreement, but only as respects their interests in the operations of the Named Insured and subject to all (See Attached Descriptions) California Dept of Transportation 50 Higuera St San Luis Obispo, CA 93401 1 of 2 #S35958338/M32922499 GREGGDRI3Client#: 1864843 HYSJU 1 of 2 #S35958338/M32922499 SAGITTA 25.3 (2016/03) DESCRIPTIONS (Continued from Page 1) policy terms, conditions and exclusions. General, Auto, Pollution and Excess Liability policies and Workers Compensation Insurance are Primary and Non Contributory subject to all policy terms, conditions and exclusions, where required by written contract or agreement. Waiver of subrogation applies in favor of the certificate holder on the General, Auto, Pollution and Excess Liability policies and Workers Compensation Insurance where required by written contract or agreement. The Excess Liability is excess over the General, Auto, and Employers Liability, and extends the coverage limits. 30 days notice of insurer cancellation will be given (except 10 days for non-payment of premium). 2 of 2 #S35958338/M32922499 Policy No.Eff. Date of Pol.Exp. Date of Pol.Eff. Date of End.Producer No.Add’l. Prem Return Prem. 73051000 INCL Additional Insured – Automatic – Owners, Lessees Or Contractors U-GL-1175-F CW (04/13) Page 1 of 2 Includes copyrighted material of Insurance Services Office, Inc., with its permission. THIS ENDORSEMENT CHANGES THE POLICY. PLEASE READ IT CAREFULLY. Named Insured: Address (including ZIP Code): This endorsement modifies insurance provided under the: Commercial General Liability Coverage Part A.Section II – Who Is An Insured is amended to include as an additional insured any person or organization whom you are required to add as an additional insured on this policy under a written contract or written agreement. Such person or organization is an additional insured only with respect to liability for "bodily injury", "property damage" or "personal and advertising injury" caused, in whole or in part, by: 1.Your acts or omissions; or 2.The acts or omissions of those acting on your behalf, in the performance of your ongoing operations or "your work" as included in the "products-completed operations hazard", which is the subject of the written contract or written agreement. However, the insurance afforded to such additional insured: 1.Only applies to the extent permitted by law; and 2.Will not be broader than that which you are required by the written contract or written agreement to provide for such additional insured. B.With respect to the insurance afforded to these additional insureds, the following additional exclusion applies: This insurance does not apply to: "Bodily injury", "property damage" or "personal and advertising injury" arising out of the rendering of, or failure to render, any professional architectural, engineering or surveying services including: a. The preparing, approving or failing to prepare or approve maps, shop drawings, opinions, reports, surveys, field orders, change orders or drawings and specifications; or b. Supervisory, inspection, architectural or engineering activities. This exclusion applies even if the claims against any insured allege negligence or other wrongdoing in the supervision, hiring, employment, training or monitoring of others by that insured, if the "occurrence" which caused the "bodily injury" or "property damage", or the offense which caused the "personal and advertising injury", involved the rendering of or the failure to render any professional architectural, engineering or surveying services. U-GL-1175-F CW (04/13) Page 2 of 2 Includes copyrighted material of Insurance Services Office, Inc., with its permission. C.The following is added to Paragraph 2. Duties In The Event Of Occurrence, Offense, Claim Or Suit of Section IV – Commercial General Liability Conditions: The additional insured must see to it that: 1.We are notified as soon as practicable of an "occurrence" or offense that may result in a claim; 2.We receive written notice of a claim or "suit" as soon as practicable; and 3.A request for defense and indemnity of the claim or "suit" will promptly be brought against any policy issued by another insurer under which the additional insured may be an insured in any capacity. This provision does not apply to insurance on which the additional insured is a Named Insured if the written contract or written agreement requires that this coverage be primary and non-contributory. D.For the purposes of the coverage provided by this endorsement: 1.The following is added to the Other Insurance Condition of Section IV – Commercial General Liability Conditions: Primary and Noncontributory insurance This insurance is primary to and will not seek contribution from any other insurance available to an additional insured provided that: a. The additional insured is a Named Insured under such other insurance; and b. You are required by written contract or written agreement that this insurance be primary and not seek contribution from any other insurance available to the additional insured. 2.The following paragraph is added to Paragraph 4.b. of the Other Insurance Condition of Section IV – Commercial General Liability Conditions: This insurance is excess over: Any of the other insurance, whether primary, excess, contingent or on any other basis, available to an additional insured, in which the additional insured on our policy is also covered as an additional insured on another policy providing coverage for the same "occurrence", offense, claim or "suit". This provision does not apply to any policy in which the additional insured is a Named Insured on such other policy and where our policy is required by a written contract or written agreement to provide coverage to the additional insured on a primary and non- contributory basis. E.This endorsement does not apply to an additional insured which has been added to this policy by an endorsement showing the additional insured in a Schedule of additional insureds, and which endorsement applies specifically to that identified additional insured. F. With respect to the insurance afforded to the additional insureds under this endorsement, the following is added to Section III – Limits Of Insurance: The most we will pay on behalf of the additional insured is the amount of insurance: 1. Required by the written contract or written agreement referenced in Paragraph A. of this endorsement; or 2. Available under the applicable Limits of Insurance shown in the Declarations, whichever is less. This endorsement shall not increase the applicable Limits of Insurance shown in the Declarations. All other terms and conditions of this policy remain unchanged. Policy No.Eff. Date of Pol.Exp. Date of Pol.Eff. Date of End.Producer Add’l Prem.Return Prem. 73051000 $ INCL $ Waiver Of Subrogation (Blanket) Endorsement U-GL-925-B CW (12/01) Page 1 of 1 THIS ENDORSEMENT CHANGES THE POLICY. PLEASE READ IT CAREFULLY. This endorsement modifies insurance provided under the: Commercial General Liability Coverage Part The following is added to the Transfer Of Rights Of Recovery Against Others To Us Condition: If you are required by a written contract or agreement, which is executed before a loss, to waive your rights of recovery from others, we agree to waive our rights of recovery. This waiver of rights shall not be construed to be a waiver with respect to any other operations in which the insured has no contractual interest. This page has been left blank intentionally. 73051000 INCL Coverage Extension Endorsement - Alaska U-CA-424-F AK (07/14) Page 1 of 6 Includes copyrighted material of Insurance Services Office, Inc., with its permission. T i t l e o f f o r u s t n o t b e p l a c e d a b o v e t h e l o g o . ↑ T o p M a r g i n 3 / 4 " THIS ENDORSEMENT CHANGES THE POLICY. PLEASE READ IT CAREFULLY. This endorsement modifies insurance provided under the: Business Auto Coverage Form Motor Carrier Coverage Form A. Amended Who Is An Insured 1.The following is added to the Who Is An Insured Provision in Section II – Covered Autos Liability Coverage: The following are also "insureds": a.Any "employee" of yours is an "insured" while using a covered "auto" you don't own, hire or borrow for acts performed within the scope of employment by you. Any “employee” of yours is also an “insured” while operating an “auto” hired or rented under a contract or agreement in an “employee’s” name, with your permission, while performing duties related to the conduct of your business. b.Anyone volunteering services to you is an "insured" while using a covered "auto" you don’t own, hire or borrow to transport your clients or other persons in activities necessary to your business. c.Anyone else who furnishes an "auto" referenced in Paragraphs A.1.a. and A.1.b. in this endorsement. d.Where and to the extent permitted by law, any person(s) or organization(s) where required by written contract or written agreement with you executed prior to any "accident", including those person(s) or organization(s) directing your work pursuant to such written contract or written agreement with you, provided the "accident" arises out of operations governed by such contract or agreement and only up to the Limits of Insurance shown in the Declarations. 2.The following is added to the Other Insurance Condition in the Business Auto Coverage Form and the Other Insurance – Primary and Excess Insurance Provisions Condition in the Motor Carrier Coverage Form: Coverage for any person(s) or organization(s), where required by written contract or written agreement with you executed prior to any "accident", will apply on a primary and non-contributory basis and any insurance maintained by the additional "insured" will apply on an excess basis. However, in no event will this coverage extend beyond the terms and conditions of the Coverage Form. B. Amendment – Supplementary Payments Paragraphs a.(2) and a.(4) of the Coverage Extensions Provision in Section II – Covered Autos Liability Coverage are replaced by the following: (2)Up to $5,000 for the cost of bail bonds (including bonds for related traffic law violations) required because of an "accident" we cover. We do not have to furnish these bonds. Policy No. Eff. Date of Pol. Exp. Date of Pol. Eff. Date of End. Producer No. Add’l. Prem Return Prem. U-CA-424-F AK (07/14) Page 2 of 6 Includes copyrighted material of Insurance Services Office, Inc., with its permission. (4)All reasonable expenses incurred by the "insured" at our request, including actual loss of earnings up to $500 a day because of time off from work. C. Fellow Employee Coverage The Fellow Employee Exclusion contained in Section II – Covered Autos Liability Coverage does not apply. D. Driver Safety Program Liability and Physical Damage Coverage 1.The following is added to the Racing Exclusion in Section II – Covered Autos Liability Coverage: This exclusion does not apply to covered "autos" participating in a driver safety program event, such as, but not limited to, auto or truck rodeos and other auto or truck agility demonstrations. 2.The following is added to Paragraph 2. in the Exclusions of Section III – Physical Damage Coverage of the Business Auto Coverage Form and Paragraph 2.b. in the Exclusions of Section IV – Physical Damage Coverage of the Motor Carrier Coverage Form: This exclusion does not apply to covered "autos" participating in a driver safety program event, such as, but not limited to, auto or truck rodeos and other auto or truck agility demonstrations. E. Lease or Loan Gap Coverage The following is added to the Coverage Provision of the Physical Damage Coverage Section: Lease Or Loan Gap Coverage In the event of a total "loss" to a covered "auto", we will pay any unpaid amount due on the lease or loan for a covered "auto", less: a.Any amount paid under the Physical Damage Coverage Section of the Coverage Form; and b.Any: (1)Overdue lease or loan payments at the time of the "loss"; (2)Financial penalties imposed under a lease for excessive use, abnormal wear and tear or high mileage; (3)Security deposits not returned by the lessor; (4)Costs for extended warranties, credit life insurance, health, accident or disability insurance purchased with the loan or lease; and (5)Carry-over balances from previous leases or loans. F. Towing and Labor Paragraph A.2. of the Physical Damage Coverage Section is replaced by the following: We will pay up to $75 for towing and labor costs incurred each time a covered "auto" of the private passenger type is disabled. However, the labor must be performed at the place of disablement. G. Extended Glass Coverage The following is added to Paragraph A.3.a. of the Physical Damage Coverage Section: If glass must be replaced, the deductible shown in the Declarations will apply. However, if glass can be repaired and is actually repaired rather than replaced, the deductible will be waived. You have the option of having the glass repaired rather than replaced. H. Hired Auto Physical Damage – Increased Loss of Use Expenses The Coverage Extension for Loss Of Use Expenses in the Physical Damage Coverage Section is replaced by the following: Loss Of Use Expenses U-CA-424-F AK (07/14) Page 3 of 6 Includes copyrighted material of Insurance Services Office, Inc., with its permission. For Hired Auto Physical Damage, we will pay expenses for which an "insured" becomes legally responsible to pay for loss of use of a vehicle rented or hired without a driver under a written rental contract or written rental agreement. We will pay for loss of use expenses if caused by: (1)Other than collision only if the Declarations indicate that Comprehensive Coverage is provided for any covered "auto"; (2)Specified Causes Of Loss only if the Declarations indicate that Specified Causes Of Loss Coverage is provided for any covered "auto"; or (3)Collision only if the Declarations indicate that Collision Coverage is provided for any covered "auto". However, the most we will pay for any expenses for loss of use is $100 per day, to a maximum of $3000. I. Personal Effects Coverage The following is added to the Coverage Provision of the Physical Damage Coverage Section: Personal Effects Coverage a.We will pay up to $750 for "loss" to personal effects which are: (1)Personal property owned by an "insured"; and (2)In or on a covered "auto". b.Subject to Paragraph a. above, the amount to be paid for "loss" to personal effects will be based on the lesser of: (1)The reasonable cost to replace; or (2)The actual cash value. c.The coverage provided in Paragraphs a. and b. above, only applies in the event of a total theft of a covered "auto". No deductible applies to this coverage. However, we will not pay for "loss" to personal effects of any of the following: (1)Accounts, bills, currency, deeds, evidence of debt, money, notes, securities, or commercial paper or other documents of value. (2)Bullion, gold, silver, platinum, or other precious alloys or metals; furs or fur garments; jewelry, watches, precious or semi-precious stones. (3)Paintings, statuary and other works of art. (4)Contraband or property in the course of illegal transportation or trade. (5)Tapes, records, discs or other similar devices used with audio, visual or data electronic equipment. J. Tapes, Records and Discs Coverage 1.The Exclusion in Paragraph B.4.a. of Section III – Physical Damage Coverage in the Business Auto Coverage Form and the Exclusion in Paragraph B.2.c. of Section IV – Physical Damage Coverage in the Motor Carrier Coverage Form does not apply. 2.The following is added to Paragraph 1.a. Comprehensive Coverage under the Coverage Provision of the Physical Damage Coverage Section: We will pay for "loss" to tapes, records, discs or other similar devices used with audio, visual or data electronic equipment. We will pay only if the tapes, records, discs or other similar audio, visual or data electronic devices: (a)Are the property of an "insured"; and (b)Are in a covered "auto" at the time of "loss". The most we will pay for such "loss" to tapes, records, discs or other similar devices is $500. The Physical Damage Coverage Deductible Provision does not apply to such "loss". U-CA-424-F AK (07/14) Page 4 of 6 Includes copyrighted material of Insurance Services Office, Inc., with its permission. K. Airbag Coverage The Exclusion in Paragraph B.3.a. of Section III – Physical Damage Coverage in the Business Auto Coverage Form and the Exclusion in Paragraph B.4.a. of Section IV – Physical Damage Coverage in the Motor Carrier Coverage Form does not apply to the accidental discharge of an airbag. L. Two or More Deductibles The following is added to the Deductible Provision of the Physical Damage Coverage Section: If an accident is covered both by this policy or Coverage Form and by another policy or Coverage Form issued to you by us, the following applies for each covered "auto" on a per vehicle basis: 1.If the deductible on this policy or Coverage Form is the smaller (or smallest) deductible, it will be waived; or 2.If the deductible on this policy or Coverage Form is not the smaller (or smallest) deductible, it will be reduced by the amount of the smaller (or smallest) deductible. M. Physical Damage – Comprehensive Coverage – Deductible The following is added to the Deductible Provision of the Physical Damage Coverage Section: Regardless of the number of covered "autos" damaged or stolen, the maximum deductible that will be applied to Comprehensive Coverage for all "loss" from any one cause is $5,000 or the deductible shown in the Declarations, whichever is greater. N. Temporary Substitute Autos – Physical Damage 1.The following is added to Section I – Covered Autos: Temporary Substitute Autos – Physical Damage If Physical Damage Coverage is provided by this Coverage Form on your owned covered "autos", the following types of vehicles are also covered "autos" for Physical Damage Coverage: Any "auto" you do not own when used with the permission of its owner as a temporary substitute for a covered "auto" you do own but is out of service because of its: 1.Breakdown; 2.Repair; 3.Servicing; 4."Loss"; or 5.Destruction. 2.The following is added to the Paragraph A. Coverage Provision of the Physical Damage Coverage Section: Temporary Substitute Autos – Physical Damage We will pay the owner for "loss" to the temporary substitute "auto" unless the "loss" results from fraudulent acts or omissions on your part. If we make any payment to the owner, we will obtain the owner's rights against any other party. The deductible for the temporary substitute "auto" will be the same as the deductible for the covered "auto" it replaces. O. Amended Duties In The Event Of Accident, Claim, Suit Or Loss Paragraph a. of the Duties In The Event Of Accident, Claim, Suit Or Loss Condition is replaced by the following: a.In the event of "accident", claim, "suit" or "loss", you must give us or our authorized representative prompt notice of the "accident", claim, "suit" or "loss". However, these duties only apply when the "accident", claim, "suit" or "loss" is known to you (if you are an individual), a partner (if you are a partnership), a member (if you are a limited liability company) or an executive officer or insurance manager (if you are a corporation). The failure of any agent, servant U-CA-424-F AK (07/14) Page 5 of 6 Includes copyrighted material of Insurance Services Office, Inc., with its permission. or employee of the "insured" to notify us of any "accident", claim, "suit" or "loss" shall not invalidate the insurance afforded by this policy. Include, as soon as practicable: (1)How, when and where the "accident" or "loss" occurred and if a claim is made or "suit" is brought, written notice of the claim or "suit" including, but not limited to, the date and details of such claim or "suit"; (2)The "insured’s" name and address; and (3)To the extent possible, the names and addresses of any injured persons and witnesses. If you report an "accident", claim, "suit" or "loss" to another insurer when you should have reported to us, your failure to report to us will not be seen as a violation of these amended duties provided you give us notice as soon as practicable after the fact of the delay becomes known to you. P. Waiver of Transfer Of Rights Of Recovery Against Others To Us The following is added to the Transfer Of Rights Of Recovery Against Others To Us Condition: This Condition does not apply to the extent required of you by a written contract, executed prior to any "accident" or "loss", provided that the "accident" or "loss" arises out of operations contemplated by such contract. This waiver only applies to the person or organization designated in the contract. Q. Employee Hired Autos – Physical Damage Paragraph b. of the Other Insurance Condition in the Business Auto Coverage Form and Paragraph f. of the Other Insurance – Primary and Excess Insurance Provisions Condition in the Motor Carrier Coverage Form are replaced by the following: For Hired Auto Physical Damage Coverage, the following are deemed to be covered "autos" you own: (1)Any covered "auto" you lease, hire, rent or borrow; and (2)Any covered "auto" hired or rented under a written contract or written agreement entered into by an "employee" or elected or appointed official with your permission while being operated within the course and scope of that "employee's" employment by you or that elected or appointed official’s duties as respect their obligations to you. However, any "auto" that is leased, hired, rented or borrowed with a driver is not a covered "auto". R. Unintentional Failure to Disclose Hazards The following is added to the Concealment, Misrepresentation Or Fraud Condition: However, we will not deny coverage under this Coverage Form if you unintentionally: (1)Fail to disclose any hazards existing at the inception date of this Coverage Form; or (2)Make an error, omission, improper description of "autos" or other misstatement of information. You must notify us as soon as possible after the discovery of any hazards or any other information that was not provided to us prior to the acceptance of this policy. S. Hired Auto – World Wide Coverage Paragraph 7a.(5) of the Policy Period, Coverage Territory Condition is replaced by the following: (5)Anywhere in the world if a covered "auto" is leased, hired, rented or borrowed for a period of 60 days or less, T. Bodily Injury Redefined The definition of "bodily injury" in the Definitions Section is replaced by the following: "Bodily injury" means bodily injury, sickness or disease, sustained by a person including death or mental anguish, resulting from any of these at any time. Mental anguish means any type of mental or emotional illness or disease. U-CA-424-F AK (07/14) Page 6 of 6 Includes copyrighted material of Insurance Services Office, Inc., with its permission. U. Expected Or Intended Injury The Expected Or Intended Injury Exclusion in Paragraph B. Exclusions under Section II – Covered Auto Liability Coverage is replaced by the following: Expected Or Intended Injury "Bodily injury" or "property damage" expected or intended from the standpoint of the "insured". This exclusion does not apply to "bodily injury" or "property damage" resulting from the use of reasonable force to protect persons or property. V. Physical Damage – Additional Temporary Transportation Expense Coverage Paragraph A.4.a. of Section III – Physical Damage Coverage is replaced by the following: 4. Coverage Extensions a. Transportation Expenses We will pay up to $50 per day to a maximum of $1,000 for temporary transportation expense incurred by you because of the total theft of a covered "auto" of the private passenger type. We will pay only for those covered "autos" for which you carry either Comprehensive or Specified Causes of Loss Coverage. We will pay for temporary transportation expenses incurred during the period beginning 48 hours after the theft and ending, regardless of the policy's expiration, when the covered "auto" is returned to use or we pay for its "loss". W.Return of Stolen Automobile The following is added to the Coverage Extension Provision of the Physical Damage Coverage Section: If a covered “auto” is stolen and recovered, we will pay the cost of transport to return the “auto” to you. We will pay only for those covered “autos" for which you carry either Comprehensive or Specified Causes of Loss Coverage. All other terms, conditions, provisions and exclusions of this policy remain the same. WC926749111 This page has been left blank intentionally. CT Archive Plan Set No.06/02/2022 Caltran Permit Plans - Permit No. 0522 6DP 0544 Permittee / Contractor must contact State Inspector a minimum of 2 weeks prior to starting work.Page 1 of 3 CT Archive Plan Set No.06/02/2022 Caltran Permit Plans - Permit No. 0522 6DP 0544 Permittee / Contractor must contact State Inspector a minimum of 2 weeks prior to starting work.Page 2 of 3 CT Archive Plan Set No.06/02/2022 Caltran Permit Plans - Permit No. 0522 6DP 0544 Permittee / Contractor must contact State Inspector a minimum of 2 weeks prior to starting work.Page 3 of 3 CALIFORNIA STATE TRANSPORTATION AGENCY GAVIN NEWSOM, Governor ENCROACHMENT PERMIT OFFICE 50 HIGUERA STREET | SAN LUIS OBISPO, CA 93401-5415 PHONE (805) 549-3152 | FAX (805) 549-3062 | TTY 711 http://www.dot.ca.gov/dist05 April 28, 2022 05-SLO-101-27.305/27.441 0522 NSV 0140 City of San Luis Obispo Attn: Nick Teague 919 Palm Street San Luis Obispo, CA 93401-2710 Dear Mr. Teague: Attached is your approved encroachment permit. DO NOT BEGIN WORK UNTIL YOU HAVE FIRST READ THE PERMIT CAREFULLY AND COMPLETELY AND CONTACTED THE STATE INSPECTOR LISTED ON YOUR PERMIT. This permit is a legal and binding contract once work on it has begun. You are subject to the provisions contained in the permit and in the attached Encroachment Permit General Provisions. If there is any question regarding interpretation of any detail in the permit or the General Provisions, you may contact the inspector listed on your permit or our office at (805) 549-3152. Thank you in advance for your cooperation. Pursuant to the Executive Department, State of California, Proclamation of a State of Emergency, signed on October 27, 2019, and under the direction of the Office of Emergency Services and the State Emergency Plan, work authorized by this permit will be suspended when a planned Public Safety Power Shutoff (PSPS) notification is in effect. Unless Permittee has obtained special approval from the Director of Caltrans or his assigns to work during a PSPS event, Permittee must stop work and make all traveled ways and roadsides safe for public travel and emergency services if notified by the Director of Caltrans or his assigns. Sincerely, Eileen Stephens, PE, QSD/P District Permit Engineer STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION FM 91 1436ENCROACHMENT PERMIT TR-0120 (REV. 6/2012) Permit No. 0522 NSV 0140 Dist/Co/Rte/PM In compliance with (Check one): 05-SLO-101-27.305/27.441 Date Your application of February 18, 2022 April 28, 2022 Fee Paid Deposit Utility Notice No. of EXEMPT Performance Bond Amount (1) Payment Bond Amount (2) Agreement No. of Bond Company R/W Contract No. of Bond Number (1) Bond Number (2) TO: City of San Luis Obispo Attn: Nick Teague 919 Palm Street San Luis Obispo, CA 93401-2710 Phone: Permittee’s Reference No. 91506A , PERMITTEE and subject to the following, PERMISSION IS HEREBY GRANTED to: At exploratory location B-17, 3 boring holes will be drilled using direct-push methods to a depth of 70-ft below ground surface. Depth- discrete soil and groundwater samples will be taken to analyze water quality under Caltrans standard shoulder or ramp closure. After drilling is complete, the borings will be back-filled per standard DWR Bulletin 74-90 and the project's Contract Documents. At exploratory locations B-11 and B12, 3 boring holes will be drilled using direct-push methods to a depth of 70-ft below ground surface. Depth-discrete soil and groundwater samples will be taken to analyze water quality under Caltrans standard shoulder and lane closure. After drilling is complete, the borings will be back-filled per standard DWR Bulletin 74-90 ad the project's Contract Documents. This location is in asphalt and will be repaired with an approximately 2-ft wide by 18-ft long asphalt patch per City Standards. The asphalt replacement is to be 10 inches thick base on City Standard 6020 as shown on the attached plans and as directed by the permit provisions in US Highway 101 right of way between postmiles 27.305 and 27.441 in the City of San Luis Obispo within the County of San Luis Obispo. Page 1 of 19 THIS PERMIT IS NOT A PROPERTY RIGHT AND DOES NOT TRANSFER WITH THE PROPERTY TO A NEW OWNER. The following attachments are also included as part of this permit (Check applicable): In addition to fee, the Permittee will be billed actual costs for: ☒Yes ☐ No General Provisions (TR-0045)☐Yes ☒ No Utility Maintenance Provisions☒Yes ☐ No Special Provisions☐Yes ☒ No A Cal-OSHA permit, if required: Permit No. _________________☒Yes Field Work ☐Yes ☒ No As-Built Plans Submittal Route Slip for Locally Advertised Projects (If any Caltrans effort expended) ☒Yes ☐ No Std. Storm Water Pollution Prevention Special Provisions☒Yes ☐ No The information in the environmental documentation has been reviewed and is considered prior to approval of this permit. This permit is void unless the work is completed before December 31, 2022 This permit is to be strictly construed and no other work other than specifically mentioned is hereby authorized. No project work shall be commenced until all other necessary permits and environmental clearances have been obtained. cc: APPROVED: Permit File Jim McKrell-Whitley Gardens RE Off. (Insp.) Cindy Knoeck-D.O. TIMOTHY M. GUBBINS, District Director BY: AK Eileen Stephens, PE, QSD/P, District Permit Engineer ADA Notice For individuals with sensory disabilities, this document is available in alternate formats. For alternate format information, contact the Forms Management Unit at (916) 445- 1233, TTY 711, or write to Records and Forms Management, 1120 N Street, MS-89, Sacramento, CA 95814. ☐Yes ☒ No Review ☐Yes ☒ No Inspection City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 2 of 19 STATE PERMIT INSPECTOR Unless approved otherwise by the State Permit Inspector, Permittee must contact the State Permit Inspector listed below, at the following times, before starting work in the State right of way: • A minimum of two weeks prior to commencing work for a pre-job meeting to discuss permit provisions, notification requirements, and scheduling. • A minimum of two working days prior to commencing work. State Permit Inspector: Jim McKrell Phone: (805) 276-1570 Email: jim.mckrell@dot.ca.gov Fax: Notification requirements that will impact your work schedule: 1. Changes to horizontal or vertical clearances; minimum of 25-day advance notification. 2. Lane closures: completed “Weekly Traffic Update” form must be submitted by noon the Tuesday prior to date of proposed lane closure. 3. Public Affairs: completed “Public Affairs – Permitted Activity Notification” form must be submitted by noon the Wednesday prior to begin activity date. 4. When work has been interrupted for more than five working days, the Permittee must notify the Caltrans Permit Inspector a minimum of two working days prior to restarting work. This issued encroachment permit is void unless the permitted activity or construction is completed by the void date shown on page 1 of this encroachment permit. The Permittee is solely responsible to keep track of the permit void date. All requests to extend this void date must be received by the District 5 Encroachment Permits Office while the encroachment permit is valid. Request for an extension received after the permit void date cannot be processed. Pursuant to the Executive Department, State of California, Proclamation of a State of Emergency, signed on October 27, 2019, and under the direction of the Office of Emergency Services and the State Emergency Plan, work authorized by this permit will be suspended when a planned Public Safety Power Shutoff (PSPS) notification is in effect. Unless Permittee has obtained special approval from the Director of Caltrans or his assigns to work during a PSPS event, Permittee must stop work and make all traveled ways and roadsides safe for public travel and emergency services if notified by the Director of Caltrans or his assigns. City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 3 of 19 ADDITIONAL ATTACHMENTS • PUBLIC AFFAIRS PROJECT NOTIFICATION • WEEKLY TRAFFIC UPDATE • HOLIDAY AND SPECIAL DAY LANE CLOSURE RESTRICTION CALENDAR • DISTRICT 5 NON-STANDARD SPECIAL PROVISION 12-4.02C(3)(f) • CALTRANS STANDARD PLANS T9-T12, T14, T30-T34 • FORM DC-CEM-3101 • PEDESTRIAN SAFETY (MCP) • STEEL PLATE BRIDGING UTILITY • SURVEYS (SV) • TRAFFIC STRIPING, MARKERS, AND SIGNS • Other: o Typical Temporary Sign Support Details o Typical Portable Changeable Message Sign Placement o Notice of Completion TR-0128 PLANS AND SPECIFICATIONS If conflicts arise between Special Provisions, Plans, Caltrans Standard Plans, Standard Specifications, or other Caltrans standards, the Caltrans Inspector shall make the final determination regarding selection or interpretation of standards and/or specifications. State Standards and Specifications must apply to all work within the State right of way unless directed otherwise by the State Inspector. Reference to the Engineer in the State Standard Specifications must include the State Representative (Caltrans Permit Inspector or District Permit Engineer). Attention is directed to Section 5 of the current State Standard Specifications and the Encroachment Permit General Provisions (TR-0045) regarding control of work and permit work plan revisions. Additionally, the State Permit Inspector may require reasonable additions, modifications, or revisions to the scope of work at no cost to the State if the change is in the best interest of the State facility where the encroachment permit is being granted and Caltrans policy, Standard Specifications, or Permit Provisions are unclear. WORK HOURS Work authorized by this permit that does not restrict or close any traffic lane may be performed on weekdays between the hours of 9:00 AM and 3:00 PM. Traffic lane restrictions or closures: Nighttime lane closures shall only be allowed on Monday through Thursday between the hours of 7:00 PM and 6:00 AM, and Friday between the hours of 12:00 AM and 6:00 AM. City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 4 of 19 Work and lane closure restrictions will apply prior to and after a holiday or holiday weekend: 1. As shown on the attached Holiday and Special Day Lane Closure Restrictions calendar. 2. Work schedules beyond the calendar dates shall comply with the attached District 5 Non-Standard Special Provision 12-4.02C(3)(f). 3. When a designated legal holiday falls on a Sunday, the following Monday shall be a designated legal holiday. 4. When November 11th falls on a Saturday, Friday November 10th shall be a designated legal holiday. The State Inspector must approve deviations from these hours in advance. CONDITIONS OF APPROVAL 1. All encroachment permits approved and issued after October 19, 2018, must comply with Caltrans 2018 Standard Specifications and Standard Plans. 2. All asphalt concrete pavement repair on Madonna Road within the State right of way shall be to City standards and specification per the current freeway agreement. 3. Nighttime highway construction work lighting must be provided within the work zone to illuminate the task(s), minimum illumination of 10 foot-candles, in a manner that will minimize glare to work crews and not interfere with the vision of oncoming motorists (e.g. providing screens, mounting lamps below the top edge of the barrier wall, varying the beam angle, etc.) 4. Permittee shall coordinate with the Caltrans Permit Inspector and Caltrans Electrical Operations to check the function of traffic signal systems within the work zones permitted prior to beginning work and after work has been completed. 5. If the proposed work will damage or impair the normal operation of State traffic signal facilities that cannot be permanently restored within 24 hours, Permittee must provide and maintain temporary traffic signal facilities to ensure normal traffic signal operations until the permanent traffic signal facilities have been restored at no cost to the State. City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 5 of 19 6. If the proposed work will damage or impair the normal function of State traffic signal detector loops that cannot be permanently restored within 24 hours, Permittee must provide and maintain alternative optical or video traffic detection to ensure normal traffic signal operations until the permanent traffic detector loops have been restored at no cost to the State. 7. Work that may impact State traffic signal-controlled intersections may not begin until Permittee or Permittee’s contractor has coordinated with the Caltrans Permit Inspector to formulate an action plan to ensure disruption to normal traffic signal operations will not exceed a 24-hour period. 8. Permittee shall be responsible to identify the location of Caltrans traffic signal conduits and detector loops prior to performing excavation operations. Permittee must take all necessary precautions to protect Caltrans traffic signal facilities in place. Permittee shall be solely responsible to replace damaged traffic signal facilities as directed by the Caltrans representative. 9. Permittee must coordinate with the Caltrans Permit Inspector and Caltrans Electrical Operations to change the operation of traffic signal facilities. Only Caltrans Electrical Operations staff is allowed to access and modify the operation of the traffic signal controller. 10. When a traffic lane approaching a signalized intersection must be closed to traffic, do not place metallic traffic control devices or park vehicles above existing traffic signal detector loops. 11. Permittee shall be solely responsible to provide additional traffic control devices to protect the work site and traveling public as directed by the Caltrans Permit Inspector to meet field conditions at no cost to the State. DOUBLE PERMIT Notwithstanding General Provision #4, your Contractor is required to apply for and obtain an encroachment permit prior to starting work. The Contractor will be billed $4,200.00 by Caltrans Accounting for permit processing and anticipated permit inspection fees to issue the double permit. The Contractor will be billed for any amount exceeding the permit fees or refunded any unused portion thereof after completion of the project. The Contractor’s encroachment permit application must state that it is a “Double Permit for permit number 0522 NSV 0140.” Work within the State right of way must not begin until the double permit has been issued. City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 6 of 19 The Permittee’s contractor is responsible to provide the following: A. Caltrans Lane Closure System (LCS) Compliance 1. Work authorized by this permit will require compliance and proper notification in LCS. 2. Your contractor must provide the contact information for two personnel, who will be ensuring LCS compliance in item 17 (description of work) of the Standard Encroachment Permit Application TR-0100 when applying for the double permit. Contact information shall include personnel’s full names, phone numbers and email addresses. 3. Double permit applications missing the LCS contacts will be rejected. B. A certificate of liability insurance and an additional insured endorsement is required to cover the State’s potential liability for the permitted work and the issuance of the Double Permit. The certificate and endorsement must name “the State of California, California Department of Transportation, the directors, officers, employees, and/or agents of the State of California and/or the California Department of Transportation” as additional insured for the following minimum liability insurance limits: $2,000,000.00 General Liability Aggregate $1,000,000.00 General Liability per Occurrence $100,000.00 Non-Owned Vehicle Property Damage The Certificate must contain “Permit Number 0522 NSV 0140” in the description of the Certificate. The application and material for the double permit may be mailed or delivered to the following address, or sent by email to D5.Permits@dot.ca.gov CALTRANS ENCROACHMENT PERMIT OFFICE Attention: Eileen Stephens, PE, QSD/P 50 Higuera Street San Luis Obispo, CA 93401 Any questions concerning the double permits should be directed to ALAN KWONG at (805) 534-3860 or sent by email to alan.kwong@dot.ca.gov. City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 7 of 19 NOTIFICATIONS Notice of Materials Used Permittee’s attention is directed to the State Standard Specification – Section 6 “Control of Materials.” The Permittee must bear all costs for source material inspection. Please note that these materials may require source inspection and approval at the manufacturer’s plant. Permittee shall be solely responsible to furnish a list of materials to be used on the permitted project by completing the attached Form CEM-3101 "Notice of Materials Used" for traffic signal standards, lighting (electrolier) standards, metal poles, mast arms, foundation bolts, overhead sign trusses, guard rail components, column casings, epoxy coated rebar, reinforced concrete pipe, steel girders, sign panels, and other items as specified by the State representative. Form must be submitted to the Caltrans Permit Inspector and METS Material Administrator. The METS Material administrator must determine which materials will require source inspection and which will require onsite inspection in coordination with the Caltrans Permit Inspector. Additional form submissions may be required to address additional items that require source inspection. Please allow a minimum of six weeks for source inspection, testing, and approval of materials to be used. The METS Material Administrator can be reached via fax at 916-227-7084 or via email at materials_administrator-METS@dot.ca.gov. TRAFFIC CONTROL AND PUBLIC SAFETY All traffic control must be performed under the direction of qualified and competent traffic control personnel. If it becomes apparent to the Caltrans Permit Inspector that the Permittee's contractor does not have adequately trained and competent staff to perform traffic control, the Permittee or Permittee's contractor must hire a suitable contractor to provide traffic control. Traffic control and construction zone signing must be performed per an approved traffic control plan. In the absence of a project specific traffic control plan: All traffic control must be performed in compliance with the applicable City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 8 of 19 Caltrans Standard Plans for traffic control, California Manual on Uniform Traffic Control Devices, or as approved by and as directed by the Caltrans Permit Inspector, or If requested by the Caltrans Permit Inspector, Permittee or Permittee's contractor must provide a traffic control plan prepared by a duly licensed individual for review and approval. Plans must bear the licensed individual's signature and identifying licensing information. All traffic control personnel performing flagging operations must be trained in accordance with Cal/OSHA Title 8, Division 1, Chapter 4, subchapter 4 Construction Safety Orders, Article 11, Section 1599 (f) and (g), and must provide certification of training if requested by the State Permit Inspector. All traffic control devices must comply with the current California Manual of Uniform Traffic Control Devices. The Permittee must provide all traffic control devices and personnel. All expenses incurred from traffic control operations must be borne by the Permittee. Work must not interfere with traffic and no equipment must be parked on or operated from the traveled way unless approved by the Caltrans representative. Notwithstanding lane closures noted in the traffic control plans or elsewhere in this permit, the full width of the traveled way must be open for use by public traffic on Saturdays, Sundays, designated legal holidays, the day preceding designated legal holidays, after 6:00 AM on Fridays, and when construction operations are not actively in progress. On multilane roadways, a minimum of one-paved traffic lane, not less than 12 feet wide, must be open for use by public traffic in each direction of travel. If approved by the State Inspector, one lane may be closed during construction and public traffic stopped for periods not to exceed 5 minutes. After each closure, all accumulated traffic must be allowed to pass through the work before another closure is made. Lane closures must not exceed 0.5 mile in length. Minor deviations from the requirements of this section concerning hours of work may be permitted upon the written request of the Permittee if, in the opinion of the Inspector, public traffic will be better served, and the work expedited. The Permittee must not adopt these deviations until the Inspector has approved them in writing. City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 9 of 19 Except for installing, maintaining and removing traffic control devices, whenever work is performed, or equipment is operated in the following work areas the Permittee must close the adjacent traffic lane: APPROACH SPEED OF PUBLIC TRAFFIC (Posted Speed Limit) (mph) WORK AREA Over 45 Within 6 feet of a traffic lane but not on a traffic lane. 35 to 45 Within 3 feet of a traffic lane but not on a traffic lane. The lane closure provisions of this section shall not apply if permanent railing, temporary railing or a barrier protects the work area. “NO PARKING” zones must be posted a minimum of 48 hours in advance of proposed parking lane closure. Suspended Loads Suspended loads or equipment must not be moved nor positioned over public traffic or pedestrians. GENERAL REQUIREMENTS Project/Work Site All disturbed areas must be restored to original or better condition. Any change in the existing drainage pattern, whether occasioned by increase or diversion, and the cost of damage, repair, or restoration of the State highway right of way must be the responsibility of the Permittee. No earth or construction materials are to be dragged or scraped across the highway pavement. No excavated earth shall be placed or allowed to remain at a location where it can be tracked on the highway traveled way, public, or private approach by the Permittee’s construction equipment or by traffic entering or leaving the highway traveled way. The Permittee must immediately remove excavated earth or mud so tracked onto the highway pavement or public or private approach. No excavation, maintenance hole, pull box, or vault shall be left open overnight or unattended during work hours without written permission from the Caltrans City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 10 of 19 representative and adequate protection for traffic and pedestrians is provided. Any clearing and grubbing must conform to Caltrans Standard Specification Section 17-2. Personnel Protective/Safety Equipment All personnel working within the State right of way must wear the appropriate personnel safety/protective equipment as specified by the personnel's employer's "Injury and Illness Prevention Program" required by the California Code of Regulations 3203. If requested by the Caltrans Permit Inspector, personnel's employer must provide a copy of said "Injury and Illness Prevention Program" and identify the locations within the document that addresses, but not limited to, personal protective equipment, head protection, and warning garments. In the absence of an "Injury and Illness Prevention Program," all other personnel within the project work zone must conform to the personnel protective/safety equipment requirements in the latest edition of the Caltrans Safety Manual. Aerially Deposited Lead (ADL) for Minimal Disturbance Permittee must reuse the soil within the work limits in the immediate area from which it was excavated. If any excess soil is generated, it becomes the property of the Permittee. Permittee must transport all excess soil outside of Caltrans' right- of-way and dispose of it in accordance with all applicable environmental laws and regulations. Construction Debris and Waste Materials The Permittee solely owns all construction debris and waste materials, including hazardous waste, generated by this permitted project. Said materials must be removed from the State right of way, stored, and disposed of in accordance with applicable local, regional, State, and Federal specifications or regulations. Construction debris and waste materials must be disposed of: at designated off-site commercial facilities approved to accept said materials, at non-commercial permitted sites approved to accept said materials (Permittee must provide copies of all necessary local and State agency permits prior to disposal.), or at sites outside of the State of California approved to accept said materials (Permittee to provide copies of permits issued by the local and State agency with jurisdiction over the site prior to disposal.). If requested by the State Permit inspector, Permittee must provide a copy of City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 11 of 19 documentation as proof of the proper disposal of said materials. Survey Monumentation Permittee’s attention is directed to Section 5-1.36, "Property and Facility Preservation," Caltrans Standard Specifications and “Professional Land Surveyors’ Act,” Section 8771 of the State of California Business and Professions Code. Permittee must physically inspect the work site and locate survey monuments prior to work commencement. Monuments that might be disturbed must be referenced or reset in accordance with the standards mentioned above. If feasible, monuments should not be set within the traveled way. All monuments that must be set or perpetuated in paved surfaces must be constructed in accordance with Caltrans Standard Specifications, Section 78-2, "Survey Monuments," and Caltrans Standard Plan A74, Type D, or equal with prior approval of the District Surveys Engineer. Copies of Corner Record files or Record of Surveys recorded in compliance with the Business and Professions Code must be forwarded to the Caltrans District 5 Surveys Engineer at the following address: Material Testing Material testing and quality control must conform to the State Construction Manual and to the State Material Testing Manual. Testing must be performed by a certified material-testing consultant acceptable to the State and paid for by the Permittee. Material testing and quality control tests must be performed as required by the State’s Inspector and the results thereof must be made immediately available. All required construction compliance tests must be performed with the California Test Methods and must be in accordance with the latest edition of Caltrans Independent Assurance Program Manual. A Caltrans certified laboratory must also perform all tests and all laboratory reports must be furnished to the Department’s representative at no cost to the State. Caltrans District 5 Survey Section Attn: Jeremy Villegas 50 Higuera Street San Luis Obispo, CA 93401 Phone: (805)549-3066 Email: jeremy.villegas@dot.ca.gov City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 12 of 19 Existing Trees and Vegetation Unless stated elsewhere in this permit or shown on the approved permit plans, this permit does not authorize the removal, severing of roots or trimming of vegetation. If work of this nature is required, a written request and approval, by the Caltrans Permit Inspector, is required in advance of performing the work. Replacement planting may be required as a mitigation measure. Excavations should be done outside of drip line to reduce tree damage and integrity of trees. If excavations must be made within the drip line of trees (or extending tree roots) along the right of way, the trenches must be hand dug and the utility routed beneath or around root structure. Major tree roots must not be cut or damaged. Additionally, the exposed roots must be wrapped and kept moist until the excavation is back filled with the native material. Requests for exceptions must be accompanied by an Arborist’s recommendation. Archaeological/Cultural Requirements If archaeological resources or human remains are accidentally discovered during construction, work must be halted within 150 feet of the find until a qualified professional archaeologist can evaluate it. Permittee must notify Caltrans District Archaeologist Krisstin Hadick, (805) 549-3193, about the discovery immediately. If the find is determined to be significant, appropriate mitigation measures must be formulated and implemented. Signs Installation of roadside signs must comply with all applicable portions of the current Caltrans Standard Specifications Section 56-3, Caltrans Standard Plans, California Manual on Uniform Traffic Control Devices, and Caltrans policies. If exact locations of roadside and construction area signs are not shown on the project plans, post holes must be dug by hand, except where potential conflicts can be eliminated. Potential conflicts are considered eliminated when an appropriate regional notification center has performed field mark-out and no subsurface utilities are within 4 feet of the proposed post hole, or the post hole can be moved 4 feet away from subsurface utilities as located by the utility owner. Temporary and permanent signs placed within the State right of way must comply with minimum retro-reflectivity requirements of the most current of the following: Federal Highway Administration Manual on Uniform Traffic Control Devices - Section 2A.08, Caltrans Standard Specifications 82-2, or Caltrans policy. Except for white background signs, retroreflective sheeting must conform to ASTM D4956-13 Type XI and Caltrans "Prequalified and Tested Signing and Delineation Materials." City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 13 of 19 White background sign retroreflective sheeting must conform to ASTM D4956 Type VIII or Type IX and Caltrans "Prequalified and Tested Signing and Delineation Materials." Retroreflective sheeting must be applied to sign panels as recommended by the retroreflective-sheeting manufacturer without stretching, tearing or damage. Roadside signs mounted on post(s) must be placed at locations shown on the permit plans and must be installed in compliance with the latest edition of Caltrans Standard Plan RS1 through RS4. Temporary signs mounted on barricades and barricade/sign combinations must be crashworthy. The bottom of a temporary sign mounted on a barricade, or other portable support, must be at least 1 foot above the traveled way or the existing surface at the location of placement. Proposed sign placement must not interfere with the visibility of any existing warning, regulatory, information or guide signs along the State Highway. Signs to be owned and maintained by the Permittee shall be appropriately marked on the back of the sign. A safe pedestrian passageway width of 4 feet must be maintained at any sign installation in areas normally traversed by pedestrians. The minimum passageway adjacent to a drop off, such as a curb face or gutter must be at least 5 feet. Portable Changeable Message Sign Permittee must furnish portable changeable message signs (PCMS) conforming to State Standard Specifications Section 12, “Temporary Traffic Control” and the California Manual on Uniform Traffic Control Devices. If edge of PCMS sign panel or PCMS extends into the paved shoulder, provide a standard shoulder closure per Caltrans Revised Standard Plan RSP T10. When PCMS message is no longer needed to inform the traveling public of construction activities, the PCMS must be removed from the State highway right of way, or the PCMS display board must be rotated away from view of the traffic lanes and shut off. Surveys Traffic control and traffic control signage for each survey site must be determined City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 14 of 19 by and approved by the State Inspector prior to starting work. All survey operations must be conducted off the traveled way except where necessary to cross pavements and medians. When survey operations are being conducted, the permittee must furnish, place, and maintain signs and safety equipment in accordance with the latest edition of the Caltrans Survey Manual, Caltrans Manual of Traffic Controls for Construction and Maintenance Work Zones, and California Manual on Uniform Traffic Control Devices. All personnel must wear hard hats and warning garments in the appropriate color (fluorescent/reflective versions). Work must be done during daylight hours only. Unless specifically authorized in this permit, markings within the right-of-way must be temporary. Any painted markings must be made with water-soluble paint, and other markings must be removed upon completion of the survey. Electromagnetic and radioactive equipment must be operated by certified personnel and must not interfere with radio communications or be directed toward the traveling public. Permission is also granted to park survey vehicles temporarily within the right of way, outside the shoulders, while survey work is in progress. Auxiliary support and employee vehicles must remain outside of the right of way. Survey information and assistance may be obtained upon request to: If feasible, monuments should not be set within the traveled way. All monuments that must be set or perpetuated in paved surfaces must be constructed in accordance with Caltrans Standard Specifications, Section 78-2, "Survey Monuments," and Standard Plan A74, Type D, or equal with prior approval of the District Surveys Engineer. Department of Transportation Survey Section Attn: Jeremy Villegas 50 Higuera Street San Luis Obispo, CA 93401 Phone: (805)549-3066 Email: jeremy.villegas@dot.ca.gov City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 15 of 19 Any survey data requested by or furnished to Caltrans must be provided without charge. Copies of Corner Records or Records of Surveys, recorded in compliance with the Business and Professions Code, must be forwarded to the District Surveys Engineer. Measurements across traffic lanes must be made with electronic distance measuring devices utilizing non-visible light or other optical means. Permittee must provide for the safe passage of pedestrians and bicyclists. This permit does not authorize removal, cutting, trimming or damage to any tree, shrub, or plant within the highway right of way. Unless specifically authorized elsewhere in this permit, excavation of holes in paved surfaces is prohibited. Any permitted excavations must be backfilled in accordance with State standards and as directed by the State’s representative. When on the State Highway system, use W21-6 “Survey Crew” sign prior to survey area per the Caltrans Standard Plan T9 advance warning sign spacing or under the guidance of the Caltrans Permit Inspector. Soil Bore/Sampling Permittee must supply a complimentary copy of all Department of Water Resources well completion reports for sites within the State right of way. The permit # 5022-NSV-0140 must be printed on the cover of any documents for identification and sent to: Caltrans District 5 Geotechnical Branch 50 Higuera Street San Luis Obispo, CA 93401 Monitoring Wells All discharge from the wells must be removed from the State right of way, treated and disposed of according to current local and regional standards. No discharge shall be allowed into the State’s surface drainage systems. City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 16 of 19 Permittee shall be responsible to properly register wells, with the State of California Department of Water Resources and all applicable local and/or federal permitting authority. Abandonment, of any wells installed within the State right of way, must be in compliance with all applicable local and/or federal guidelines. At the completion of use, wells must be plugged and abandoned in a manner approved by the County of San Luis Obispo department with jurisdictional authority over remediation activities and the Regional Water Quality Control Boards in compliance with the Department of Water Resources’ well standards. Caltrans must be notified when the monitoring wells are properly abandoned. Well abandonment must be the subject of a separate encroachment permit. If the method of abandonment is not specified, the entire ground water monitoring structure must be removed and backfilled with a minimum of 564 lbs. Portland cement per 1 yard of commercial-quality concrete sand, using the tremie method, to within 1 inch below the existing AC paving. The remaining backfill must be with asphalt concrete paving or concrete, 590 pounds of cementitious material per cubic yard of aggregate, colored to match the adjacent surfaces. Monitoring wells located on the graded shoulder must be backfilled with a minimum of 564 lbs. Portland cement per 1 yard of commercial- quality concrete sand to within 18 inches below existing grade. The remaining backfill in the graded shoulder must be approved native material or as directed by the State Inspector per Caltrans Standard Specification for backfill requirements. Permittee must supply complimentary copies of all test results and reports that use data of information from wells, borings and / or sampling of areas within the Caltrans right of way. Reports must include but not be limited to site investigation reports, groundwater monitoring reports and site closure reports. This includes a map accurately locating the well, borings and/or service lines in reference to a permanent landmark and Global Positioning System (GPS) location of approved wells with an accuracy of ± 6 foot. A copy of the GPS coordinates must be provided to Caltrans at no cost. All courtesy copy of reports must include a reference to permit number 0522 NSV 0140, County of San Luis Obispo, US Highway 101, and postmiles 27.305 to 27.441; and sent to: Shelly Donohue, (Permit Number) Caltrans Hazardous Waste Coordinator 50 Higuera Street San Luis Obispo, CA 93401 City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 17 of 19 Pavement Delineation and Markings Unless otherwise directed by the Caltrans District Permit Engineer and the Caltrans Permit Inspector, all installations of pavement delineation on or after July 21, 2017 must comply with the Department’s policies for 6-inch-wide pavement delineation as shown in Caltrans 2018 Revised Standard Plans series A20 and A40. All striping and pavement markings, unless otherwise noted on the approved plans or permit, must be applied in thermoplastic material in conformance with Section 84-2, “THERMOPLASTIC TRAFFIC STRIPES AND PAVEMENT MARKINGS,” of the Caltrans Standard Specifications. Permittee or Permittee’s contractor must coordinate with the Caltrans Permit Inspector to document all existing pavement delineation and markings that may be obscured or removed during the pavement rehabilitation process. All existing pavement delineation and markings must be replaced in kind and at the same location. EXISTING FACILITIES Existing improvements must be protected or relocated as required by the work authorized by this permit. If existing improvements including pavement markings and delineation are damaged or their operation impaired by this work, they must be replaced or restored to the satisfaction of the Caltrans representative. Such work must be done immediately if requested by the Caltrans representative. IT SHALL BE THE PERMITTEE'S RESPONSIBILITY TO FULLY INVESTIGATE THE PROPOSED WORK AREA FOR POSSIBLE CONFLICTS WITH EXISTING UTILITIES AND FACILITIES, INCLUDING BUT NOT LIMITED TO SEWERS, ELECTRICAL CONDUCTORS, GAS LINES, WATER PIPES AND TRAFFIC SIGNAL FACILITIES. THE PERMITTEE AGREES TO ACCEPT ALL LIABILITY FOR DAMAGES DONE TO EXISTING FACILITIES CAUSED BY THE WORK AUTHORIZED UNDER THIS PERMIT. Caltrans Traffic Signals, Lighting, and Electrical Facilities Caltrans does not subscribe to underground utility locating services. It is the Permittee’s sole responsibility to investigate, locate, and mark existing Caltrans traffic signal equipment, loops, conduits, and street lighting facilities prior to work in or between signalized intersections and street lighting facilities. Utility Relocations If existing public or private utilities conflict with the construction PROJECT, PERMITTEE will make necessary arrangements with the owners of such utilities for their protection, relocation, or removal. PERMITTEE must inspect the protection, relocation, or removal of such facilities. Total costs of such protection, relocation, City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 18 of 19 or removal which STATE or PERMITTEE must legally pay, will be borne by PERMITTEE. If any protection, relocation, or removal of utilities is required, including determination of liability for cost, such work must be performed in accordance with STATE policy and procedure. PERMITTEE must require any utility company performing relocation work in the STATE's right-of-way to obtain a State Encroachment Permit before the performance of said relocation work. Any relocated utilities must be correctly located and identified on the as-built plans. WATER POLLUTION CONTROL Discharge of Storm Water and Non-Storm Water Work within State highway right-of-way must be conducted in compliance with all applicable requirements of the National Pollutant Discharge Elimination System (NPDES) permit issued to the Department of Transportation (Department), to govern the discharge of storm water and non-storm water from its properties. Work must also be in compliance with all other applicable Federal, State and Local laws and regulations, and with the Department's Encroachment Permits Manual and encroachment permit. The Department’s NPDES Permit requires the Permittee to comply and maintain, if applicable, the approved Storm Water Special Provisions for Minimal or No Impact (TR-0400). The Contractor (permittee) must be responsible for fines assessed or levied against the Contractor or the Department as a result of the Contractor's (permittee) failure to comply with these provisions. Fines shall include civil liability fines, criminal penalties and/or damages, assessed, or levied against the Department or the Contractor, Contractor liability for failure to comply with these provisions shall also include reimbursement for payments made or costs incurred by the Department in settlement for alleged violations of the Permits, the Manuals, or applicable laws, regulations, or requirements. Costs incurred could include sums spent in lieu of fines or penalties, in mitigation or to remediate or correct violations. If an unforeseen illicit discharge is generated during construction activities and the Caltrans Permit Inspector cannot be contacted, the Permittee or Permittee's contractor must contact the Encroachment Permit Storm Water Coordinator, Terran Hilden (805) 835-6571 immediately. The Permittee or Permittee's contractor is responsible to contain and remediate the illicit discharge as directed by the Caltrans Permit Inspector or Encroachment Permit Storm Water Coordinator at no cost to the State. Unless stated otherwise in this permit, approved plan, or approved specifications, seeds sown for erosion control must achieve 70% germination over the disturbed soil area as determined by the Caltrans Permit Inspector. City of San Luis Obispo 0522 NSV 0140 05-SLO-101-27.305/27.441 Page 19 of 19 The Caltrans Permit Inspector must approve the seed mix prior to its application. PROJECT COMPLETION Immediately following completion of the work permitted herein, the Permittee must fill out and send by email the Notice of Completion attached to this permit. THANK YOU! STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 1 of 6 © 2018 California Department of Transportation. All rights reserved. ENCROACHMENT PERMIT GENERAL PROVISIONS TR – 0045 (REV. 04/2021) 1. AUTHORITY: The California Department of Transportation (“Department”) has authority to issue encroachment permits under Division 1, Chapter 3, Article 1, Sections 660 through 734 of the Streets and Highways Code. 2. REVOCATION: Encroachment permits are revocable on five (5) business days’ notice unless otherwise stated on the permit and except as provided by law for public corporations, franchise holders, and utilities. Notwithstanding the foregoing, in an emergency situation as determined by the Department, an encroachment permit may be revoked immediately. These General Provisions and any applicable Special Provisions are subject to modification or abrogation by the Department at any time. Permittees’ joint use agreements, franchise rights, reserved rights or any other agreements for operating purposes in State of California (“State”) highway right-of-way may be exceptions to this revocation. 3. DENIAL FOR NONPAYMENT OF FEES: Failure to pay encroachment permit fees when due may result in rejection of future applications and denial of encroachment permits. 4. ASSIGNMENT: This encroachment permit allows only the Permittee or Permittee’s authorized agent to work within or encroach upon the State highway right-of-way, and the Permittee may not assign or transfer this encroachment permit. Any attempt to assign or transfer this encroachment permit shall be null and void. 5. ACCEPTANCE OF PROVISIONS: Permittee understands and agrees to accept and comply with these General Provisions, the Special Provisions, any and all terms and/or conditions contained in or incorporated into the encroachment permit, and all attachments to the encroachment permit (collectively “the Permit Conditions”), for any encroachment, work, and/or activity to be performed under this encroachment permit and/or under color of authority of this encroachment permit. Permittee understands and agrees the Permit Conditions are applicable to and enforceable against Permittee as long as the encroachment remains in, under, or over any part of the State highway right-of-way. 6. BEGINNING OF WORK: When traffic is not impacted (see General Provision Number 35), the Permittee must notify the Department’s representative two (2) business days before starting permitted work. Permittee must notify the Department’s representative if the work is to be interrupted for a period of five (5) business days or more, unless otherwise agreed upon. All work must be performed on weekdays during regular work hours, excluding holidays, unless otherwise specified in this encroachment permit. 7. STANDARDS OF CONSTRUCTION: All work performed within State highway right-of-way must conform to all applicable Departmental construction standards including but not limited to: Standard Specifications, Standard Plans, Project Development Procedures Manual, Highway Design Manual and Special Provisions. Other than as expressly provided by these General Provisions, the Special Provisions, the Standard Specifications, Standard Plans, and other applicable Departmental standards, nothing in these General Provisions is intended to give any third party any legal or equitable right, remedy, or claim with respect to the encroachment permit and/or to these General Provisions or any provision herein. These General Provisions are for the sole and exclusive benefit of the Permittee and the Department. Where reference is made in such standards to “Contractor” and “Engineer,” these are amended to be read as “Permittee” and “Department’s representative,” respectively, for purposes of this encroachment permit. 8. PLAN CHANGES: Deviations from plans, specifications, and/or the Permit Conditions as defined in General Provision Number 5 are not allowed without prior approval from the Department’s representative and the Federal Highway Administration (“FHWA”) representative if applicable. 9. RIGHT OF ENTRY, INSPECTION AND APPROVAL: All work is subject to monitoring and inspection. The United States, the State, the Department, and the Directors, officers, employees, agents, and/or contractors of the State and/or of the Department, and other state, and federal agencies, and the FHWA, through their agents or representatives, must have full access to highway facilities/encroachment area, at any and all times for the purpose of inspection, maintenance, activities needed for construction/reconstruction, and operation of the State highway right-of-way. Upon completion of work, Permittee must request a final inspection for acceptance and approval by the Department. The local public agency Permittee must not give final construction approval to its contractor until final acceptance and approval by the Department is obtained. 10. PERMIT AT WORKSITE: Permittee must keep the permit package or a copy thereof at the work site at all times and must show it upon request to any Department representative or law enforcement officer. If the permit package, or a copy thereof, is not kept and made available at the work site at all times, the work must be suspended. 11. CONFLICTING ENCROACHMENTS: Permittee must yield start of work to ongoing, prior authorized work adjacent to or within the limits of the Permittee’s project site. When existing encroachments conflict with Permittee’s work, the Permittee must bear all cost for rearrangements (e.g., relocation, alteration, removal, etc.). STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 2 of 6 © 2018 California Department of Transportation. All rights reserved. 12. PERMITS AND APPROVALS FROM OTHER PUBLIC AGENCIES AND/OR ENTITIES: This encroachment permit is invalidated if the Permittee has not obtained all permits and approvals necessary and required by law, including but not limited to permits from the California Public Utilities Commission (“CPUC”), California Occupational Safety and Health Administration (“Cal-OSHA”), and any other public agency and/or entity having jurisdiction. Permittee warrants all such permits and approvals have been obtained before beginning work under this encroachment permit. The Department may, at the Department’s discretion, require the Permittee to demonstrate that Permittee has obtained all such permits/approvals, and Permittee shall demonstrate this at the time and in the manner specified by the Department. 13. PEDESTRIAN AND BICYCLIST SAFETY: A safe continuous passageway must be maintained through the work area at existing pedestrian or bicycle facilities. At no time must pedestrians be diverted onto a portion of the street used for vehicular traffic. At locations where safe alternate passageways cannot be provided, appropriate signs and barricades must be installed at the limits of construction and in advance of the limits of construction at the nearest crosswalk or intersection to detour pedestrians to facilities across the street. Attention is directed to Section 7-1.04 “Public Safety,” and to Section 12-4.04 “Temporary Pedestrian Access Routes,” and to Section 16-2.02 “Temporary Pedestrian Facility,” of the Department’s Standard Specifications, and to California Vehicle Code section 21760, subdivision (c). 14. PUBLIC TRAFFIC CONTROL: The Permittee must provide traffic control protection, warning signs, lights, safety devices, etc., and take all other measures necessary for the traveling public’s safety as required by law and/or the Department. While providing traffic control, the needs of all road users, including but not limited to motorists, bicyclists and pedestrians, including persons with disabilities in accordance with the Americans with Disabilities Act, must be an essential part of the work activity. Lane, Bike Lane, Sidewalk, Crosswalk, and/or shoulder closures must comply with the Department’s Standard Specifications and Standard Plans for Temporary Traffic Control Systems & Temporary Pedestrian Access Routes, and with the applicable Special Provisions. Where issues are not addressed in the Standard Specifications, Standard Plans, and/or Special Provisions, the California Manual on Uniform Traffic Control Devices (Part 6, Temporary Traffic Control) must be followed. 15. MINIMUM INTERFERENCE WITH TRAFFIC: Permittee must plan and conduct work so as to create the least possible inconvenience to the traveling public (motorized vehicles, unmotorized vehicles such as bicycles, pedestrians, person(s) with disabilities, etc.), such that traffic is not unreasonably delayed. 16. STORAGE OF EQUIPMENT AND MATERIALS: The storage of equipment or materials is not allowed within State highway right-of-way, unless specified within the Special Provisions of this encroachment permit. If encroachment permit Special Provisions allow for the storage of equipment or materials within the State highway right-of-way, the equipment and material storage must also comply with Section 7-1.04, Public Safety, of the Department’s Standard Specifications. 17. CARE OF DRAINAGE: Permittee must provide alternate drainage for any work interfering with an existing drainage facility in compliance with the Department’s Standard Specifications, Standard Plans, and/or as directed by the Department’s representative. 18. RESTORATION AND REPAIRS IN STATE HIGHWAY RIGHT-OF-WAY: Permittee is responsible for restoration and repair of State highway right-of-way resulting from permitted work (Streets and Highways Code, section 670 et seq.). 19. STATE HIGHWAY RIGHT-OF-WAY CLEAN UP: Upon completion of work, Permittee must remove and dispose of all scraps, refuse, brush, timber, materials, etc. off the State highway right-of-way. The aesthetics of the highway must be as it was before work started or better. 20. COST OF WORK: Unless stated otherwise in the encroachment permit or a separate written agreement with the Department, the Permittee must bear all costs incurred for work within the State highway right-of-way and waives all claims for indemnification or contribution from the United States, the State, the Department, and from the Directors, officers, and employees of the State and/or the Department. Removal of Permittee’s personal property and improvements shall be at no cost to the United States, the State, and the Department. 21. ACTUAL COST BILLING: When specified in the permit, the Department will bill the Permittee actual costs at the currently set Standard Hourly Rate for encroachment permits. 22. AS-BUILT PLANS: When required, Permittee must submit one (1) set of folded as-built plans within thirty (30) calendar days after completion and acceptance of work in compliance with requirements listed as follows: a) Upon completion of the work provided herein, the Permittee must submit a paper set of As-Built plans to the Department’s representative. b) All changes in the work will be shown on the plans, as issued with the permit, including changes approved by Encroachment Permit Rider. c) The plans are to be prominently stamped or otherwise noted “AS-BUILT” by the Permittee’s representative who was responsible for overseeing the work. Any original plan that was approved with a Department stamp, or by signature of the Department’s representative, must be used for producing the As- Built plans. d) If construction plans include signing or striping, the dates of signing or striping removal, relocation, or installation must be shown on the As-Built plans when required as a condition of the encroachment permit. When the construction plans show signing and striping for staged construction on separate sheets, STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 3 of 6 © 2018 California Department of Transportation. All rights reserved. the sheet for each stage must show the removal, relocation, and installation dates of the appropriate staged striping and signing. e) As-Built plans must contain the Encroachment Permit Number, County, Route, and Post Mile on each sheet. f) The As-Built Plans must not include a disclaimer statement of any kind that differs from the obligations and protections provided by sections 6735 through 6735.6 of the California Business and Professions Code. Such statements constitute non-compliance with Encroachment Permit requirements and may result in the Department retaining Performance Bonds or deposits until proper plans are submitted. Failure to comply may also result in denial of future encroachment permits or a provision requiring a public agency to supply additional bonding. 23. PERMITS FOR RECORD PURPOSES ONLY: When work in the State highway right-of-way is within an area under a Joint Use Agreement (JUA) or a Consent to Common Use Agreement (CCUA), a fee exempt encroachment permit is issued to the Permittee for the purpose of providing a notice and record of work. The Permittee’s prior rights must be preserved without the intention of creating new or different rights or obligations. “Notice and Record Purposes Only” must be stamped across the face of the encroachment permit. 24. BONDING: The Permittee must file bond(s), in advance, in the amount(s) set by the Department and using forms acceptable to the Department. The bonds must name the Department as obligee. Failure to maintain bond(s) in full force and effect will result in the Department stopping all work under this encroachment permit and possibly revoking other encroachment permit(s). Bonds are not required of public corporations or privately-owned utilities unless Permittee failed to comply with the provisions and/or conditions of a prior encroachment permit. The surety company is responsible for any latent defects as provided in California Code of Civil Procedure section 337.15. A local public agency Permittee also must comply with the following requirements: a) In recognition that project construction work done on State property will not be directly funded and paid by State, for the purpose of protecting stop notice claimants and the interests of State relative to successful project completion, the local public agency Permittee agrees to require the construction contractor to furnish both a payment and performance bond in the local public agency’s name with both bonds complying with the requirements set forth in Section 3-1.05 Contract Bonds of the Department’s Standard Specifications before performing any project construction work. b) The local public agency Permittee must defend, indemnify, and hold harmless the United States, the State and the Department, and the Directors, officers, and employees of the State and/or Department, from all project construction related claims by contractors, subcontractors, and suppliers, and from all stop notice and/or mechanic’s lien claimants. The local public agency also agrees to remedy, in a timely manner and to the Department’s satisfaction, any latent defects occurring as a result of the project construction work. 25. FUTURE MOVING OF INSTALLATIONS: Permittee understands and agrees to relocate a permitted installation upon notice by the Department. Unless under prior property right or agreement, the Permittee must comply with said notice at the Permittee’s sole expense. 26. ENVIRONMENTAL: a) ARCHAEOLOGICAL/HISTORICAL: If any archaeological or historical resources are identified or encountered in the work vicinity, the Permittee must immediately stop work, notify the Department’s representative, retain a qualified archaeologist who must evaluate the site at Permittee’s sole expense, and make recommendations to the Department’s representative regarding the continuance of work. b) HAZARDOUS MATERIALS: If any hazardous waste or materials (such as underground storage tanks, asbestos pipes, contaminated soil, etc.) are identified or encountered in the work vicinity, the Permittee must immediately stop work, notify the Department’s representative, retain a qualified hazardous waste/material specialist who must evaluate the site at the Permittee’s sole expense, and make recommendations to the Department’s representative regarding the continuance of work. Attention is directed to potential aerially deposited lead (ADL) presence in unpaved areas along highways. It is the Permittee’s responsibility to take all appropriate measures to protect workers in conformance with California Code of Regulations Title 8, Section 1532.1, “Lead,” and with Cal-OSHA Construction Safety Orders, and to ensure roadway soil management is in compliance with Department of Toxic Substances Control (DTSC) requirements. c) Biological: If any regional, state, or federally listed biological resource is identified or encountered in the work vicinity, the Permittee must immediately stop work, notify the Department’s representative, retain a qualified biologist who must evaluate the site at Permittee’s sole expense, and make recommendations to the Department’s representative regarding the continuance of work. 27. PREVAILING WAGES: Work performed by or under an encroachment permit may require Permittee’s contractors and subcontractors to pay appropriate prevailing wages as set by the California Department of Industrial Relations. Inquiries or requests for interpretations relative to enforcement of prevailing wage requirements must be directed to the California Department of Industrial Relations. 28. LIABILITY, DEFENSE, AND INDEMNITY: The Permittee agrees to indemnify and save harmless the United States, the State, the Department, and the Directors, officers, employees, agents and/or contractors of the State and/or of the Department, including but not limited to the Director STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 4 of 6 © 2018 California Department of Transportation. All rights reserved. of Transportation and the Deputy Directors, from any and all claims, demands, damages, costs, liability, suits, or actions of every name, kind, and description, including but not limited to those brought for or on account of property damage, invasion of privacy, violation or deprivation of a right under a state or federal law, environmental damage or penalty, or injury to or death of any person including but not limited to members of the public, the Permittee, persons employed by the Permittee, and/or persons acting on behalf of the Permittee, arising out of or in connection with: (a) the issuance and/or use of this encroachment permit; and/or (b) the encroachment, work, and/or activity conducted pursuant to this encroachment permit, or under color of authority of this encroachment permit but not in full compliance with the Permit Conditions as defined in General Provision Number 5 (“Unauthorized Work or Activity”); and/or (c) the installation, placement, design, existence, operation, and/or maintenance of the encroachment, work, and/or activity; and/or (d) the failure by the Permittee or anyone acting on behalf of the Permittee to perform the Permittee’s obligations under any part of the Permit Conditions as defined in General Provision Number 5, in respect to maintenance or any other obligation; and/or (e) any change to the Department’s property or adjacent property, including but not limited to the features or conditions of either of them, made by the Permittee or anyone acting on behalf of the Permittee; and/or (f) a defect or obstruction related to or caused by the encroachment, work, and/or activity whether conducted in compliance with the Permit Conditions as defined in General Provision Number 5 or constituting Unauthorized Work or Activity, or from any cause whatsoever. The duty of the Permittee to indemnify and save harmless includes the duties to defend as set forth in Section 2778 of the Civil Code. It is the intent of the parties that except as prohibited by law, the Permittee will defend, indemnify, and hold harmless as set forth in this General Provision Number 28 regardless of the existence or degree of fault or negligence, whether active or passive, primary or secondary, on the part of: the United States, the State; the Department; the Directors, officers, employees, agents and/or contractors of the State and/or of the Department, including but not limited to the Director of Transportation and the Deputy Directors; the Permittee; persons employed by the Permittee; and/or persons acting on behalf of the Permittee. The Permittee waives any and all rights to any type of expressed or implied indemnity from or against the United States, the State, the Department, and the Directors, officers, employees, agents, and/or contractors of the State and/or of the Department, including but not limited to the Director of Transportation and the Deputy Directors. The Permittee understands and agrees to comply with the obligations of Titles II and III of the Americans with Disabilities Act in the conduct of the encroachment, work, and/or activity whether conducted pursuant to this encroachment permit or constituting Unauthorized Work or Activity, and further agrees to defend, indemnify, and save harmless the United States, the State, the Department, and the Directors, officers, employees, agents, and/or contractors of the State and/or of the Department, including but not limited to the Director of Transportation and the Deputy Directors, from any and all claims, demands, damages, costs, penalties, liability, suits, or actions of every name, kind, and description arising out of or by virtue of the Americans with Disabilities Act. The Permittee understands and agrees the Directors, officers, employees, agents, and/or contractors of the State and/or of the Department, including but not limited to the Director of Transportation and the Deputy Directors, are not personally responsible for any liability arising from or by virtue of this encroachment permit. For the purpose of this General Provision Number 28 and all paragraphs herein, “contractors of the State and/or of the Department” includes contractors, and their subcontractors, under contract to the State and/or the Department. This General Provision Number 28 and all paragraphs herein take effect immediately upon issuance of this encroachment permit, and apply before, during, and after the encroachment, work, and/or activity contemplated under this encroachment permit, whether such work is in compliance with the Permit Conditions as defined in General Provision Number 5 or constitutes Unauthorized Work or Activity, except as otherwise provided by California law. The Permittee’s obligations to defend, indemnify, and save harmless under this General Provision Number 28 take effect immediately upon issuance of this encroachment permit and have no expiration date, including but not limited to situations in which this encroachment permit expires or is revoked, the work or activity performed under this encroachment permit is accepted or not accepted by the Department, the encroachment, work, and/or activity is conducted in compliance with the Permit Conditions as defined in General Provision Number 5 or constitutes Unauthorized Work or Activity, and/or no work or activity is undertaken by the Permittee or by others on the Permittee’s behalf. If the United States or an agency, department, or board of the United States is the Permittee, the first two paragraphs of this General Provision Number 28 (beginning “The Permittee agrees to indemnify…” and “It is the intent of the parties…”) are replaced by the following paragraph: Claims for personal injury, death, or property damage allegedly caused by the negligent or wrongful act or omission of any employee of the United States acting within the scope of their official duties are subject to the Federal Tort Claims Act, as amended, 28 U.S.C. § 1346 and § 2671 et seq. (Chapter 171). 29. NO PRECEDENT ESTABLISHED: This encroachment permit is issued with the understanding that it does not establish a precedent. 30. FEDERAL CIVIL RIGHTS REQUIREMENTS FOR PUBLIC ACCOMMODATION: STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 5 of 6 © 2018 California Department of Transportation. All rights reserved. a) As part of the consideration for being issued this encroachment permit, the Permittee, on behalf of Permittee and on behalf of Permittee’s personal representatives, successors in interest, and assigns, does hereby covenant and agree that: i) No person on the grounds of race, color, or national origin may be excluded from participation in, be denied the benefits of, or be otherwise subjected to discrimination in the use of said facilities. ii) That in connection with the construction of any improvements on said lands and the furnishings of services thereon, no discrimination must be practiced in the selection and retention of first-tier subcontractors in the selection of second-tier subcontractors. iii) That such discrimination must not be practiced against the public in their access to and use of the facilities and services provided for public accommodations (such as eating, sleeping, rest, recreation), and operation on, over, or under the space of the State highway right-of-way. iv) That the Permittee must use the premises in compliance with all other requirements imposed pursuant to Title 15, Code of Federal Regulations, Commerce and Foreign Trade, Subtitle A. Office of the Secretary of Commerce, Part 8 (15 C.F.R. Part 8) and as said Regulations may be amended. b) That in the event of breach of any of the above nondiscrimination covenants, the State and the Department have the right to terminate this encroachment permit and to re-enter and repossess said land and the facilities thereon and hold the same as if said permit had never been made or issued. 31. MAINTENANCE: The Permittee is responsible at Permittee’s sole expense for the encroachment, and the inspection, maintenance, repair, and condition thereof, so that it does not negatively impact State highway safety, maintenance, operations, construction, activities needed for construction/reconstruction, State facilities, or other encroachments. Additional permits or approval documents may be required authorizing additional work related to inspection, repair, and/or maintenance activities. 32. SPECIAL EVENTS: In accordance with subdivision (a) of Streets and Highways Code section 682.5 and 682.7, the Department is not responsible for the conduct or operation of the permitted activity, and the applicant agrees to defend, indemnify, and hold harmless the United States, the State, the Department, and the Directors, officers, employees, agents, and contractors of the State and/or of the Department, including but not limited to the Director of Transportation and the Deputy Directors, from any and all claims, demands, damages, costs, liability, suits, or actions of every name, kind and description arising out of any activity for which this encroachment permit is issued. The Permittee is required, as a condition of this encroachment permit, for any event that awards prize compensation to competitors in gendered categories, for any participant level that receives prize compensation, to ensure the prize compensation for each gendered category is identical at each participant level. (Streets and Highways Code, section 682.7.) The Permittee understands and agrees to comply with the obligations of Titles II and III of the Americans with Disabilities Act in the conduct of the event, and further agrees to defend, indemnify, and save harmless the United State, the State and the Department, and the Directors, officers, and employees of the State and/or Department, including but not limited to the Director of the Department and the Deputy Directors, from any and all claims, demands, damages, costs, liability, suits, or actions of every name, kind and description arising out of or by virtue of the Americans with Disabilities Act. 33. PRIVATE USE OF STATE HIGHWAY RIGHT-OF-WAY: State highway right-of-way must not be used for private purposes without compensation to the State. The gifting of public property uses and therefore public funds is prohibited under the California Constitution, Article XVI, Section 6. 34. FIELD WORK REIMBURSEMENT: Permittee must reimburse the Department for field work performed on Permittee’s behalf to correct or remedy hazards or damaged facilities, or to clear refuse, debris, etc. not attended to by the Permittee. 35. LANE CLOSURE REQUEST SUBMITTALS AND NOTIFICATION OF CLOSURES TO THE DEPARTMENT: Lane closure request submittals and notifications must be in accordance with Section 12-4.02, and Section 12.4-04, of the Department’s Standard Specifications or as directed by the Department’s representative. The Permittee must notify the Department’s representative and the Traffic Management Center (“TMC”) before initiating a lane closure or conducting an activity that may cause a traffic impact. In emergency situations when the corrective work or the emergency itself may affect traffic, the Department’s representative and the TMC must be notified as soon as possible. 36. SUSPENSION OF TRAFFIC CONTROL OPERATION: The Permittee, upon notification by the Department’s representative, must immediately suspend all traffic lane, bike lane, sidewalk, crosswalk, and/or shoulder closure operations and any operation that impedes the flow of traffic. All costs associated with this suspension must be borne by the Permittee. 37. UNDERGROUND SERVICE ALERT (USA) NOTIFICATION: Any excavation requires compliance with the provisions of Government Code section 4216 et seq., including but not limited to notice to a regional notification center, such as Underground Service Alert (USA). The Permittee must provide notification to the Department representative at least five (5) business days before, and the regional notification center at least forty- STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION ENCROACHMENT PERMIT GENERAL PROVISIONS Page 6 of 6 © 2018 California Department of Transportation. All rights reserved. eight (48) hours before, performing any excavation work within the State highway right-of-way. 38. COMPLIANCE WITH THE AMERICANS WITH DISABILITIES ACT (ADA): All work within the State highway right-of-way to construct and/or maintain any public facility must be designed, maintained, and constructed strictly in accordance with all applicable Federal Access laws and regulations (including but not limited to Section 504 of the Rehabilitation Act of 1973, codified at 29 U.S.C. § 794), California Access laws and regulations relating to ADA, along with its implementing regulations, Title 28 of the Code of Federal Regulations Parts 35 and 36 (28 C.F.R., Ch. I, Part 35, § 35.101 et seq., and Part 36, § 36.101 et seq.), Title 36 of the Code of Federal Regulations Part 1191 (36 C.F.R., Ch. XI, Part 1191, § 1119.1 et seq.), Title 49 of the Code of Federal Regulations Part 37 (49 C.F.R., Ch. A, Part 37, § 37.1 et seq.), the United States Department of Justice Title II and Title III for the ADA, and California Government Code section 4450 et seq., which require public facilities be made accessible to persons with disabilities. Notwithstanding the requirements of the previous paragraph, all construction, design, and maintenance of public facilities must also comply with the Department’s Design Information Bulletin 82, “Pedestrian Accessibility Guidelines for Highway Projects” and Standard Plans & Specifications on “Temporary Pedestrian Access Routes.” 39. STORMWATER: The Permittee is responsible for full compliance with the following: a) For all projects, the Department’s Storm Water Program and the Department’s National Pollutant Discharge Elimination System (NPDES) Permit requirements under Order No. 2012-0011-DWQ, NPDES No CAS000003; and b) In addition, for projects disturbing one acre or more of soil, with the California Construction General Permit Order No. 2009-0009-DWQ, NPDES No CAS000002; and c) In addition, for projects disturbing one acre or more of soil in the Lahontan Region with Order No. R6T-2016- 0010, NPDES No CAG616002. d) For all projects, it is the Permittee’s responsibility to install, inspect, repair, and maintain all facilities and devices used for water pollution control practices (Best Management Practices/BMPs) before performing daily work activities. STATE OF CALIFORNIA DEPARTMENT OF TRANSPORTATION Page 1 of 2 ENCROACHMENT PERMIT SPECIAL PROVISIONS STORMWATER SPECIAL PROVIONS )25 MINIMAL 25 NO IMPACT (SWSP) TR-0400 (Rev 05/2018) 1. GENERAL: The purpose of these Special Provisions is to provide the Permittee with specifications for water pollution control to minimize, prevent, or control the discharge of material into the air, surface waters, groundwater, and storm sewers owned by the State or local agencies. These provisions are not intended to take the place of the Caltrans Water Pollution Control Program (WPCP) for projects where soil disturbance from work activities less than one acre, or work activities of one acre or more subject to the preparation of the Caltrans Storm Water Pollution Prevention Plan (SWPPP). The Permittee must comply with the following Special Provisions and the direction of the State Representative. All Stormwater Best Management Practices (BMPs) must conform to Section 13 Water Pollution Control of Caltrans’ Standard Specifications. 2. NPDES REQUIREMENTS: The Permittee must be responsible for full compliance with the Caltrans Storm Water Program and the Caltrans National Pollutant Discharge Elimination System (NPDES) Permit requirements (Order No. 2012-0011-DWQ, NPDES No CAS000003) and for and projects disturbing one acre or more of soil, full compliance with the California Construction General Permit (Order No. 2009-0009-DWQ, NPDES No CAS000002) or for projects for projects that have one acre or more of soil disturbance in the Lahontan Region (Order No. R6T- 2016-0010, NPDES No CAG616002). It is the Permittee’s responsibility to install, inspect, and repair or maintain facilities and devices used for water pollution control practices (BMPs) before performing daily work activities. Installation, inspection and maintenance responsibilities on the job site include: 1) soil stabilization materials in work areas that are inactive or prior to storm events, 2) water pollution control devices to control sediment and erosion, 3) implementation of spill and leak prevention procedures for chemical and hazardous substances stored on the job site, 4) material storage, 5) stockpile management, 6) waste management, 7) non-stormwater management, 8) water conservation, 9) tracking controls and 10) illicit connection, illegal discharge detection and reporting. The Permittee must report to the State representative when discharges enter into receiving waters, adjacent property, drainage systems or when discharges could be a cause or a threat for water pollution. The Permittee must also control illicit discharges or illegal dumping prior to start of daily work schedule. Copies of written notices or orders from the Regional Water Quality Control Board or other regulatory agency must be provided to the State representative within 48 hours of reported activity. F or additional information on stormwater compliance, visit the State Water Resources Control Boards storm water Website at: http://www.waterboards.ca.gov/water_issues/programs/stormwater 3. RESPONSIBILITY FOR DEBRIS REMOVAL: The Permittee must be responsible for preventing sediment, trash, debris, and other construction waste from entering the street, the storm drains, local creeks, or any other bodies of water. 4. SPOILS AND RESIDUE: The Permittee must vacuum any saw-cut concrete waste material, debris, residue, etc. No spoils, debris, residue, etc. must be washed into a drainage system. 5. SWEEPING: Sweep paved roads at construction entrance and exit locations and surrounding paved areas daily within the job site during: 1) clearing and grubbing, 2) earthwork, 3) trenching, 4) soil disturbance, 5) pavement grinding and/or cutting, and 6) after observing tracking of material onto or off the State property. Keep dust to a minimum during sweeping activities. Use vacuum whenever dust generation is excessive or sediment pickup is ineffective. Roadways or work areas must not be washed down with water. Street sweeping operations must conform to Section 13 Water Pollution Control of Caltrans’ Standard Specifications. 6. VEHICLES AND EQUIPMENT: Permittee must prevent all vehicles, equipment, etc. from leakage or mud tracking onto roadways. If leaks cannot be repaired immediately, remove the vehicle or equipment from the job site. 7. MAINTENANCE AND FUELING OF VEHICLES AND EQUIPMENT: Maintenance and fueling of equipment must not result in any pollution at the job site. The Permittee must immediately clean up spills/leaks, and properly dispose of contaminated soil and materials. 8. CLEANING VEHICLES AND EQUIPMENT: Limit vehicle and equipment cleaning or washing at the job site except what is necessary to control vehicle tracking or hazardous waste. The Permittee must clean all equipment within a bermed area or over a drip pan large enough to prevent run-off. No soaps, solvents, degreasers, etc. must be used in State right-of-way. Any water from this operation must be collected and disposed of at an appropriate site. Containment berms or dikes must be used for fueling, washing, maintaining and washing vehicles or equipment in outside areas. Containment must be performed at least 100 feet from concentrated flows of storm water, drainage courses, and storm drain inlets if within a flood plain, otherwise at least 50 feet if outside the floodplain. Keep adequate quantities of absorbent spill- cleanup material and spill kits in the fueling or maintenance area and on fueling trucks. 9. DIESEL FUELS: The use of diesel fuel from petroleum or other fossil fuel as a form-oil or solvent is not allowed. 10. WEATHER CONDITIONS AT WORKSITE: Any activity that would generate fine particles or dust that could be transported off site by stormwater must be performed during dry weather. 11. WIND EROSION PROTECTION: The use of Wind Erosion BMPs must be deployed year-round in instances where dust or fine particles could be transported off site. 12. HOT MIX ASPHALT: Runoff from washing hot mix asphalt must not enter into any drainage conveyances. 13. PROTECTION OF DRAINAGE FACILITIES: The Permittee must protect/cover gutters, ditches, drainage courses, and inlets with gravel bags, fiber rolls, State approved fabric filters, etc., to the satisfaction of the State representative during grading, paving, saw-cutting, etc. and materials must conform to Section 13- 6.02 Materials for Water Pollution Control of Caltrans’ Standard Specifications. No such protection measures must cause an obstruction to the traveling public. The Permittee must implement spill and leak prevention procedures for chemicals and hazardous substances stored on the job site (including secondary containment requirements) in accordance to section 13-4.03B Spill Prevention and Control, and 14-11 Hazardous Waste and Contamination, Water Pollution Control of Caltrans’ Standard Specifications. 14. PAINT: Rinsing of painting equipment and materials is not permitted in State right-of-way. When thoroughly dry, dispose of © 2018 California Department of Transportation. All Rights Reserved. STATE OF CALIFORNIA DEPARTMENT OF TRANSPORTATION Page 2 of 2 ENCROACHMENT PERMIT SPECIAL PROVISIONS the following as solid waste: dry latex paint, paint cans, used brushes, rags, gloves, absorbent materials, and drop cloths. Oil based paint sludge and unusable thinner must be disposed of at an approved hazardous waste site. 15. CONSTRUCTION MATERIALS: Stockpile of all construction materials, including, but not limited to; pressure treated wood, asphalt concrete, cold mix asphalt concrete, concrete, grout, cement containing premixes, and mortar, must conform to section 13-4.03C (2) Material Storage & 13-4.03C (3) Stockpile Management of Caltrans’ Standard Specifications. 16. CONCRETE EQUIPMENT: Concrete equipment must be washed in a designated washing area in a way that does not contaminate soil, receiving waters, or storm drain systems. 17. EXISTING VEGETATION: Established existing vegetation is the best form of erosion control. Minimize disturbance to existing vegetation. Damaged or removed vegetation must be replaced as directed by the State Representative. 18. SOIL DISTURBANCE: Soil disturbing activities must be avoided during the wet weather season. I f construction activities during wet weather are allowed in your permit, all necessary erosion control and soil stabilization measures must be implemented in advance of soil disturbing activity. 19. SLOPE STABILIZATION AND SEDIMENT CONTROL: Consider a certified expert in Erosion and Sediment control in cases where slopes are disturbed during construction. The Permittee is directed to comply with Section 13.5 Temporary Soil Stabilization and Section 21 Erosion Control of Caltrans’ Standard Specifications during application of temporary soil stabilization measures to the soil surface. Fiber rolls or silt fences may be required down slope until permanent soil stabilization is established. Remove the accumulated sediment whenever the sediment accumulates to 1/3 of the linear sediment barrier height. The Permittee must limit the use of plastic materials when more sustainable, environmentally friendly alternatives exist or when environmental regulations prohibit their use within the project. 20. STOCKPILES: Stockpiles containing aggregate and/or soil must be stored at least 100 feet from concentrated flows of storm water, drainage courses, and storm drain inlets if within a flood plain, otherwise at least 50 feet if outside the floodplain, and must be covered and protected with a temporary perimeter sediment barrier. Cold mix stockpiles must be stored on an impermeable surface and covered with 9 mil plastic to prevent contact with water. Minimize stockpiling of materials on the job site. Manage stockpiles by implementing the water pollution control practices in Section 13-4.03C (3) Stockpile Management of the State of California standard specifications for construction. 21. DISCOVERY OF CONTAMINATION: The State Representative must be notified in case any unusual discoloration, odor, or texture of ground water, is found in excavated material or if abandoned, underground tanks, pipes, or buried debris are encountered. 22. SANITARY AND SEPTIC WASTE: Do not bury or discharge wastewater from a sanitary or septic system within the highway. Properly connected sewer facilities are free from leaks. With State Representative approval place portable sanitary facility at least 50 feet away from storm drains, receiving waters, and flow lines. Permittee must comply with local health agency provisions when using an on-site disposal system. 23. LIQUID WASTE: Prevent job site liquid waste from entering storm drain systems and receiving waters. Drilling slurries, grease or oil-free waste water or rinse water, dredging, wash water or rinse water running off a surface or other non-storm water liquids not covered under separate waste water permits must be held in structurally sound, leak-proof containers, such as portable bins or portable tanks. Store containers at least 50 feet away from moving vehicles and equipment. Liquid waste may require testing to determine hazardous material content prior to disposal. All measures must conform to section 13-4.03D (5) Liquid Waste, Water Pollution Control of Caltrans’ Standard Specifications. 24. WATER CONTROL AND CONSERVATION: Manage water use in a w ay that will prevent erosion and the discharge of pollutants into storm drain systems and receiving waters. Direct runoff, including water from water line repair from the job site to areas where it can infiltrate into the ground. Direct water from off-site sources around the job site or from contact with jobsite runoff. 25. PILE DRIVING: Keep spill kits and cleanup materials at pile driving locations. Park pile driving equipment over drip pans, absorbent pads, or plastic sheeting with absorbent material, and away from stormwater run-on when not in use. 26. DEWATERING: Dewatering consists of discharging accumulated storm water, groundwater, or surface water from excavations or temporary containment facilities. All dewatering operations must comply with the latest Caltrans guidelines including the Field Guide for Construction Site Dewatering. Contact State representative for approval of dewatering discharge by infiltration or evaporation, otherwise, any effluent discharged into a permitted storm water system requires approval from the Regional Water Quality Control Board. Prior to the start of dewatering, the Permittee must provide the State Representative with a dewatering and discharge work plan that complies with section 13-4.03G Dewatering, Water Pollution Control of Caltrans’ Standard Specifications. A copy of the Waste Discharge Permit and a copy of a valid WDID number issued by the Regional Board must be provided to the State representative. © 2018 California Department of Transportation. All Rights Reserved. DISTRICT 5 NOTIFICATION REQUIREMENTS The following provisions shall apply to all permit work requiring temporary lane closures or traffic detours: Temporary Lane Closures Notification of temporary lane closures or traffic detours shall be given to the State Inspector for his approval using copies of the attached form entitled, WEEKLY TRAFFIC UPDATE. Notification shall be submitted to the State Inspector by 12:00 PM (noon) Tuesday, prior to the week of the proposed closure or detour. Notifications submitted after the deadline cannot be approved for the upcoming week. All traffic control requiring the temporary closure of lanes or detour of traffic shall be approved in advance by the State Inspector. Ramp Closures 14 to 7 calendar days prior to an approved ramp closure, notice shall be posted at the ramp entrance using the appropriate SC6 sign. In addition, an SC8 or portable changeable message sign shall be posted for the preceding ramp the day of the closure unless otherwise approved by the Caltrans Permit Inspector. Caltrans Lane Closure System (LCS) Compliance Work authorized by this permit may require compliance and proper notification in LCS. If not identified elsewhere in this permit, you or your contractor must provide the contact information for two personnel, who will be ensuring LCS compliance during the pre-job meeting with the Caltrans Permit Inspector. Contact information shall include personnel’s full names, phone numbers and email addresses. You or your Contractor’s LCS contact will be required to properly notify the District Traffic Management Center (TMC) as described below. When a lane closure or lane shift has been identified by the Inspector with a Lane Closure ID # and Log #, you will be required to provide the TMC notification status when you are placing the lane closure, when you remove the lane closure, or when you cancel the lane closure. When providing the status of the lane closure to the TMC you will need to follow these steps, 1. Obtain the Lane Closure ID and Log # assigned for the approved scheduled lane closure event from the Caltrans Permit Inspector a minimum of one weekday prior to the closure day or duration. 2. Call the TMC/Lane Closure Phone Number (805) 549-3837 to provide the Lane Closure ID Status • “1097”- Lane closure work starting (1st Cone Placed). • “1098”- Lane closure work complete (Last Cone Picked Up). • “1022”- Lane closure work cancelled. When calling the TMC to provide the status on your lane closure you will say something to the effect of (substituting your lane closure ID number and Log number for example ID “P101CA” and Log number “1” below), • “1097”- “This is (your name, phone number) calling to provide a 1097 status to lane closure ID P101CA and log number 1. That is a 1097 for Papa 101 Charlie Alpha log number 1.” • “1098”- “This is (your name, phone number) calling to provide a 1098 status to lane closure ID P101CA, log number 1. That is a 1098 for Papa 101 Charlie Alpha log number 1.” • “1022”- “This is (your name, phone number) calling to provide a 1022 status to lane closure ID P101CA, log number 1. That is a 1022 for Papa 101 Charlie Alpha log number 1.” Failure to properly status the lane closures will result in a written warning by the Caltrans Permit Inspector on the first violation. If there is a 2nd violation, your permit may be suspended until a Contractor or new Contractor (C-31 or General Engineering A License preferred) who is experienced in traffic control and LCS notification is hired. Additional violations will result in the revocation of the permit and may impact the processing of future encroachment permit application packages. You can check your lane closure status at the following website: https://lcswebreports.dot.ca.gov/ Special Notifications If permitted activities such as road closures or traffic detours may result in significant traffic congestion, Permittee shall be responsible for coordinating advance notification to local newspapers, television and radio stations, and emergency response providers with both the State Inspector and the Caltrans Public Information Officer, telephone (805) 549-3237. Public notice may include press releases and/or traffic signing. Permittee shall complete and submit the attached form entitled PUBLIC AFFAIRS – PERMITTED ACTIVITY NOTIFICATION to the Caltrans Public Affairs Office prior to 12:00 PM (noon) the Wednesday prior to the approved closure or event. Additional information or clarification may be required in the form of a written description of the activities in a format that is suitable for a press release. The form may be delivered by fax to (805) 549- 3638 or emailed to the PIO contact on the form. Horizontal and Vertical Requirements for Extra-Legal Load Vehicles Permittee shall provide written notification to the Caltrans Permit Inspector or Caltrans Representative, of proposed horizontal or vertical lane restrictions which will affect extra-legal loads up to 16' wide and 18' high, or ramp closures/re-openings that may affect extra-legal loads traveling through the project area. Said notification shall be delivered to the Inspector no fewer than 25 days prior to proposed change. Permittee shall immediately notify the Caltrans Permit Inspector or Caltrans Representative as soon as the restriction is no longer present. Attention: Jim McKrell WEEKLY TRAFFIC UPDATE PERMITS For the Week of: ___________________________ Please send this form to your designated PERMIT INSPECTOR each week if you will be performing work that will impact traffic (lane closures, ramp closures, traffic control, etc.) Weekly Traffic Updates must be received by Tuesday 12:00 PM (noon) the week prior to the requested date(s) of the planned traffic control. Failure to meet the deadline may result in the denial of the requested traffic control. The State Permit Inspector may also require changes to the requested traffic control prior to its approval. We appreciate your cooperation. These updates need to be done in a timely manner to provide information to the traveling public we serve. THANKS!!!! DATE TIME (begin / end) Location – Cross Streets, County Route, and Post Mile (from / to) Impact on Traffic (Description) Reason Send or fax to: Your PERMIT INSPECTOR - Jim McKrell, Email: jim.mckrell@dot.ca.gov Your Name: ________________________________________ Phone: ______________________FAX: _____________________ Company/Dept.: _____________________________________ Email: ________________________________________________ PERMIT #: 0522 NSV 0140 Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 26 27 28 29 30 31 1 1 2 3 4 5 1 2 3 4 5 2 3 4 5 6 7 8 6 7 8 9 10 11 12 6 7 8 9 10 11 12 9 10 11 12 13 14 15 13 14 15 16 17 18 19 13 14 15 16 17 18 19 16 17 18 19 20 21 22 20 21 22 23 24 25 26 20 21 22 23 24 25 26 23 24 25 26 27 28 29 27 28 27 28 29 30 31 30 31 Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 1 2 1 2 3 4 5 6 7 1 2 3 4 3 4 5 6 7 8 9 8 9 10 11 12 13 14 5 6 7 8 9 10 11 10 11 12 13 14 15 16 15 16 17 18 19 20 21 12 13 14 15 16 17 18 17 18 19 20 21 22 23 22 23 24 25 26 27 28 19 20 21 22 23 24 25 24 25 26 27 28 29 30 29 30 31 26 27 28 29 30 Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 1 2 1 2 3 4 5 6 1 2 3 3 4 5 6 7 8 9 7 8 9 10 11 12 13 4 5 6 7 8 9 10 10 11 12 13 14 15 16 14 15 16 17 18 19 20 11 12 13 14 15 16 17 17 18 19 20 21 22 23 21 22 23 24 25 26 27 18 19 20 21 22 23 24 24 25 26 27 28 29 30 28 29 30 31 25 26 27 28 29 30 31 Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 1 1 2 3 4 5 1 2 3 2 3 4 5 6 7 8 6 7 8 9 10 11 12 4 5 6 7 8 9 10 9 10 11 12 13 14 15 13 14 15 16 17 18 19 11 12 13 14 15 16 17 16 17 18 19 20 21 22 20 21 22 23 24 25 26 18 19 20 21 22 23 24 23 24 25 26 27 28 29 27 28 29 30 25 26 27 28 29 30 31 30 31 1 2 3 4 5 6 7 August March April November Cesar Chaves Day March 31st Designated Holidays Caltrans Holiday/Special Day Date observed Martin Luther King Jr. Day 3rd Monday in January May June July September October December 25th Veterans Day Thanksgiving Day Christmas Day Last Monday in May July 4th 1st Monday in September November 11th 4th Thurs and Fri in November Memorial Day Independence Day Labor Day Caltrans Holiday/Special Day - No closures allowed No closures until 08:00 No closures until 20:00 2022 Holiday and Special Day Lane Closure Restrictions For maintenance, permits and projects using blanket chart hours No closures after 12:00 Noon No closures allowed Designated Holiday - No closures allowed Date observed December January 1st 3rd Monday in February New Year's Day Presidents' Day January February Replace Reserved in section 12-4.02C(3)(f) with: Closure restrictions for designated holidays and special days are shown in the following table: Lane Closure Restrictions For Designated Holidays And Special Days Thu Fri Sat Sun Mon Tues Wed Thu Fri Sat Sun Mon x H xx xx xx xxx SD xx x xx H xx xx xxx SD xx xx xx H xx xx xxx SD xx x xx xx xx H xx xxx SD xx xxx xx H xx xxx SD xx xx H xx xxx SD xx x H xx xxx x xx H* xx xx xx xx xxx SD xx Legend: Refer to lane requirement charts. x The full width of the traveled way must be open for use by traffic after 1200. xx The full width of the traveled way must be open for use by traffic. xxx The full width of the traveled way must be open for use by traffic until 0800. H Designated holiday H* Thanksgiving Holiday-The full width of the traveled way must be open for use by traffic between Tuesday at 1200 until the following Monday at 0800. SD Special day PUBLIC AFFAIRS - PERMITTED ACTIVITY NOTIFICATION This Project Notification should be faxed or e-mailed to Public Affairs as early as possible and preferably by noon the Wednesday prior to beginning of permitted activity. Please fill out this form as thoroughly as possible and use additional paper if needed. Include all information that the traveling public may need to be made aware of. TO: PUBLIC AFFAIRS FAX: (805) 549-3326 ATTN: □ Kevin Drabinski (Monterey, San Benito, and Santa Cruz Counties) PHONE: (805) 549-3138 E-Mail: kevin.drabinski@dot.ca.gov □ Jim Shivers (San Luis Obispo and Santa Barbara Counties) PHONE: (805) 549-3237 E-Mail: jim.shivers@dot.ca.gov PERMIT NUMBER: 0522 NSV 0140 COUNTY, ROUTE & POSTMILE: 05-SLO-101-27.305/27.441 LIMITS OF PERMITTED ACTIVITY (location in miles, distance from nearest landmarks or cities, etc.): PROJECT DESCRIPTION AND PURPOSE FOR PROJECT: At exploratory location B-17, 3 boring holes will be drilled using direct-push methods to a depth of 70-ft below ground surface. Depth-discrete soil and groundwater samples will be taken to analyze water quality under Caltrans standard shoulder or ramp closure. After drilling is complete, the borings will be back-filled per standard DWR Bulletin 74-90 and the project's Contract Documents. At exploratory locations B-11 and B12, 3 boring holes will be drilled using direct-push methods to a depth of 70-ft below ground surface. Depth-discrete soil and groundwater samples will be taken to analyze water quality under Caltrans standard shoulder and lane closure. After drilling is complete, the borings will be back-filled per standard DWR Bulletin 74-90 ad the project's Contract Documents. This location is in asphalt and will be repaired with an approximately 2-ft wide by 18-ft long asphalt patch per City Standards. The asphalt replacement is to be 10 inches thick base on City Standard 6020 as shown on the attached plans and as directed by the permit provisions in US Highway 101 right of way between postmiles 27.305 and 27.441 in the City of San Luis Obispo within the County of San Luis Obispo. ACTIVITY COORDINATOR: PHONE: FAX: E-MAIL: BEGIN ACTIVITY DATE: END ACTIVITY DATE: ANTICIPATED TRAFFIC CONTROL: ANTICIPATED TRAFFIC DELAYS: COMMENTS: (What else does the public need to know? Diagrams, maps also helpful.) *Please inform Public Affairs of any changes to the above information by submitting an updated form. COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDCIVIL mphftftftft55606570 ftftft 50454035302520160250360490640108012001320144015601680801251802453205406006607207808402LTANGENTLMERGINGL/2SHIFTINGL/3SHOULDER40639012316027030033036039042027426082107180200220240260280TAPERTANGENTCONFLICT2025303540455040506070809010010121517202225TABLE 1XYZWhere: L = Taper length in feetW = Width of offset in feet operating speed in mph speed prior to work starting, or the anticipatedS = Posted speed limit, off-peak 85th-percentile mphftftftft55606575 504540353025201151552002503053604254955706458201582052573153784465205986828662713334004745536387289273544275075936867851003-3%-6%-9%SPEEDTABLE 2116120165215287227173126DEVICE SPACINGMAXIMUM CHANNELIZING(S)SPEEDFOR WIDTH OF OFFSET 12 FEET (W)MINIMUM TAPER LENGTHDOWNGRADE Min DMin Dftftft TABLE 3ROAD TYPEDISTANCE BETWEEN SIGNSABCRURALEXPRESSWAY / FREEWAY100250350500100010025035050010025035050015002640 For speed of 45 mph or more, L = WS For speed of 40 mph or less, L = WS˜/60 * - For other offsets, use the following merging taper length formula for L:*URBAN - 25 mph OR LESSURBAN - MORE THAN 25 mph TO 40 mphURBAN - MORE THAN 40 mph********* - Longitudinal buffer space or flagger station spacing and longer than 1 mile.*** - Use on sustained downgrade steeper than -3 percent operating speed in mph speed prior to work starting, or the anticipated* - Speed is posted speed limit, off-peak 85th-percentile** there is a conflict between existing pavement markings and channelizers (CA).** - Use for taper and tangent sections where there are no pavement markings or whereADVANCE WARNING SIGN SPACINGCHANNELIZING DEVICE SPACINGTAPER LENGTH CRITERIA ANDFLAGGER STATION SPACINGLONGITUDINAL BUFFER SPACE ANDDEPARTMENT OF TRANSPORTATIONSTATE OF CALIFORNIATRAFFIC CONTROL SYSTEM TABLESFOR LANE AND RAMP CLOSURESNO SCALE5010025501002550100255010025751800900450300501002570730771825891 recommmended distances. conditions, if necessary, by increasing or decreasing the These distances should be adjusted by the Engineer for field purposes only, and should be applied with engineering judgment.* - The distances are approximate, are intended for guidance2018 STANDARD PLAN T91-29-18T9Atifa FerouzC804023-31-19285May 31, 2018Return to Table of Contents STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONSHOULDER CLOSURENOTES: NOTES:ARIGHTSHOULDERCLOSEDW21-5bRAHEADNEXTx MILESCW7-3aPLANE CLOSURELANE CLOSURE AT EXIT RAMPALANECLOSEDC30(CA)AROADWORKAHEADW20-1BAEXIT23’ 1. 2. 3. 4. 10. 11. 12. 13. L/2LCLOSEDPER LANEL/2500’23’WORK AREA500’ABAOF ENTRANCE RAMP500’ Max OR AT BEGINNINGLANE CLOSURE AT ENTRANCE RAMPAB48" x 48"72" x 60"C36" x 30"SHOULDERW21-5WORKANO SCALEMEDIAN SHOULDERMEDIAN SHOULDER SHOULDERENT RANCE RAMP CONE SPACING X SEE TABLE 1SHOULDEREXIT RAMPSHOULDERMEDIAN SHOULDER CONE SPACING X SEE TABLE 1ORTRAFFIC CONEPORTABLE FLASHING BEACONTRAFFIC CONE (OPTIONAL TAPER)FAS SUPPORT OR TRAILERFLASHING ARROW SIGN (FAS)TEMPORARY TRAFFIC CONTROL SIGN FREEWAYS AND EXPRESSWAYSFOR LANE CLOSURE ONTRAFFIC CONTROL SYSTEMSC18(CA)ASHOULDERCLOSEDC30A(CA)spacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z for SEE NOTE 13COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNED No.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIACIVIL2LWORK AREASEE TABLE 2BUFFER SPACEDLLBCSEE TABLE 3AMEDIAN SHOULDERSHOULDERDISTANCE SEE TABLE 3ADVANCE WARNING SIGNSEE TABLE 1SEE TABLE 1ALANECLOSEDC30(CA)AROADWORKAHEADW20-1AW4-2RAAHEADCLOSEDRIGHT LANE2AW4-2ROVERLAY (AS APPROPRIATE)C20(CA)RSEE NOTES 2, 9 AND 10NOTE 1SEE TABLE 1 ANDCONE SPACING XL/3CONE SPACING SEE TABLE 1 AND SEE NOTE 1SEE NOTES 4 AND 8SEE NOTE 8SEE NOTE 5AND NOTE 1SEE NOTE 3AND NOTE 1NOTE 1SEE TABLE 1 ANDCONE SPACINGAND NOTE 1SEE TABLE 1CONE SPACING XL/3SEE NOTE 2 LEGENDSIGN PANEL SIZE (Min)AND NOTE 2DISTANCE SEE TABLE 3ADVANCE WARNING SIGNSEE NOTES 2 AND 109 AND 10SEE NOTES 2,SEE NOTES 9 AND 10devices for lane closures.Provide at least one person to continuously maintain traffic controlSEE NOTE 6E5-1 SEE NOTE 11SEE NOTE 6AND TABLE 1SEE NOTE 7SEE NOTE 12SEE NOTE 11W4-1Rhorizontal curve.at the top of crest verticle curve or on aflashing arrow sign. Lane closures shall not beginwhere possible for vehicles approaching the firstA minimum 1500’ sight distance shall be providedlarger project’s limits.of work area is obvious or ends within theat the end of the lane closure unless the endsize of 48" x 24" as appropriate, shall be placedA G20-2 "END ROAD WORK" sign, with minimumhours of darkness.the locations indicated for lane closure duringin color. Flashing beacons shall be placed atand shall be orange or fluorescent red-orangeEach flag shall be at least 16" x 16" in sizewith at least two flags for daytime closure.Each advance warning sign shall be equippedonly.used instead of cones for daytime closuresspacing indicated for traffic cones may bePortable delineators placed at one-half thesee CA MUTCD Figure 6H-22 to 6H-27.Ramp, when work is proposed on the local street,For the warning sign requirements at the Exitdistance that can be perceived by road users.used if the shoulder closure extends beyond theA W7-3aP "NEXT _____ MILES" plaque must beused as shown.The E5-1 or SC18(CA) and W4-1 signs shall be lanes are to be closed. shoulder is less than 8’ and the outside b) In the median if the width of the median the available lanes remain open to traffic. a) On opposite shoulder if at least one-half ofDuplicate sign installations are not required:5.6. 7. 8. 9.used.shown except that C20(CA)L and W4-2L signs shall beMedian lane closures shall conform to the details asThe flashing arrow sign shall be Type ˛.Use one flashing arrow sign for each lane closed.lane.between the L tapers required for each closed trafficThe 2L tangent shown along lane lines shall be usedtransverse alignment to provide access to the work.on the closed shoulder may be shifted from theThe transverse alignment of the cones or barricadestype ˛˛ barricades may be used instead of the 3 cones.1000’ as shown on the "Lane Closure" detail. Twowhere a taper across a traffic lane ends and everyacross each closed lane and shoulder at each locationA minimum of 3 cones shall be placed transverselyof lane closure.Place a C30(CA) sign every 1000 ’ throughout length2018 STANDARD PLAN T101-29-18T10See Standard Plan T9 for tables.Atifa FerouzC804023-31-19286May 31, 2018Return to Table of Contents STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATION SIGN PANEL SIZE (Min) A 48" x 48"B 48" x 18"C 48" x 30"LEGENDTRAFFIC CONEPORTABLE FLASHING BEACONTRAFFIC CONE (OPTIONAL TAPER)FAS SUPPORT OR TRAILERFLASHING ARROW SIGN (FAS)TEMPORARY TRAFFIC CONTROL SIGNAALANECLOSEDROADWORKAHEADAAHEADCLOSED3LEFT LANEAAHEADCLOSEDFREEWAYLANE CLOSURE WITH PARTIAL SHOULDER USECOMPLETE CLOSUREAROADWORKAHEADW20-1W20-1W20-3 6’ MaxAHEADCLOSED2LEFT LANEAW4-2LAALANECLOSEDW4-2LAAND TABLE 1 L/3C/2BC/2AND TABLE 1AHEADDETOURW20-2AASEE TABLE 3WORK AREA CB TABLE 1TAPER SEE2LL/2L/2SEE TABLE 2BUFFER SPACED NOTES: TABLE 1SEEAM4-10RROADCLOSEDC6’ MaxTAPER LSHOULDEROVERLAY (AS APPROPRIATE)TAPER LMEDIAN SHOULDERTAPER LMEDIAN SHOULDERTAPER LTAPER LOVERLAY (AS APPROPRIATE)SHOULDEROVERLAY (AS APPROPRIATE)TRAFFIC CONTROL SYSTEMFREEWAYS AND EXPRESSWAYSCONE SPACING SEE TABLE 1BR11-2SEE TABLE 1SEE TABLE 1SEE TABLE 1AW4-2LSEE TABLE 1SEE TABLE 1SEE TABLE 1CONE SPACING X L/3SEE TABLE 3DISTANCEWARNING SIGNADVANCESEE TABLE 3DISTANCEWARNING SIGNADVANCEC20(CA)LC30(CA) C20(CA)LC30(CA)DETOURspacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z forSEE NOTE 2FOR LANE CLOSURE ONTO ACCOMPANY PLANS DATED SEE NOTES 4 AND 8SEE NOTE 8SEE NOTE 5SEE NOTE 5SEE NOTE 8SEE NOTE 8SEE NOTE 2SEE NOTES 4 AND 8AND 9SEE NOTES 2AND 9SEE NOTES 2 8. 9. 10. NOTES:1. 2. 3. 4. 5. AND NOTE 1CONE SPACING SEE TABLE 1AND 9SEE NOTES 2AND 9SEE NOTES 2devices for lane closures.Provide at least one person to continuously maintain traffic controlSEE NOTE 2AND NOTE 1SEE TABLE 3AND TABLE 1SEE NOTE 7SEE NOTE 6SEE NOTE 3SEE NOTE 6SEE NOTE 6SEE NOTE 2AND NOTE 1SEE TABLE 3ASEE TABLE 1CONE SPACING XSEE NOTE 6SEE NOTE 6SEE NOTE 72LAND NOTE 1SEE NOTE 72LSEE NOTE 6SEE NOTE 10SEE NOTE 9 6.lane closure.Place a C30(CA) sign every 1000 ’ throughout length ofcurve.the top of crest vertical curve or on a horizontalflashing arrow sign. Lane closures shall not begin atwhere possible for vehicles approaching the first A minimum 1500’ of sight distance shall be provided obvious or ends within a larger project’s limits.of the lane closure unless the end of work area is48" x 24" as appropriate, shall be placed at the end A G20-2 "END ROAD WORK" sign, with minimum size of hours of darkness.the locations indicated for lane closure duringin color. Flashing beacons shall be placed atand shall be orange or fluorescent red-orangeEach flag shall be at least 16" x 16" in sizewith at least two flags for daytime closure.Each advance warning sign shall be equippedcones for daytime closures only.indicated for traffic cones may be used instead ofPortable delineators placed at one-half the spacingalignment to provide access to the work.closed shoulder may be shifted from the transverse the transverse alignment of the barricades on the closure area. Within the complete closure area, location shown and every 2000’ within the complete placed across each closed lane and shoulder at the A minimum of Two Type ˛˛ or ˛˛˛ barricades shall be C20(CA)R and W4-2R signs shall be used.as a traffic lane shall conform to the details shown except thatLane closures on the right side using partial median shoulderflashing arrow sign shall be Type ˛.Use one flashing arrow sign for each lane closed. Thebetween the L tapers required for each closed traffic lane.The 2L tangent shown along lane lines shall be usedfrom the transverse alignment to provide access to the work.the cones or barricades on the closed shoulder may be shiftedmay be used instead of the 3 cones. The transverse alignment ofClosure with Partial Shoulder USE" detail. Two type II barricadesacross a traffic lane ends and every 1000’ as shown on the "Laneeach closed lane and shoulder at each location where a taperA minimum of 3 cones shall be placed transversely across 7.COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNED No.Exp.RE G IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIACIVIL 2018 STANDARD PLAN T10ASee Standard Plan T9 for tables.1-29-18T10AAtifa FerouzC804023-31-19287May 31, 2018Return to Table of Contents STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONAHEADWORKROADENDROAD WORKWORK AREACLOSEDAHEADRIGHT LANEW20-1500’CBATYPICAL LANE CLOSUREAAABNOTES: LANECLOSEDCG20-2 BA36" x 18"TEMPORARY TRAFFIC CONTROL SIGN30" x 30"C TRAFFIC CONEPORTABLE FLASHING BEACONFLASHING ARROW SIGN (FAS)FAS SUPPORT OR TRAILERTRAFFIC CONTROL SYSTEMFOR LANE CLOSURE ONMULTILANE CONVENTIONALW4-2RSEE TABLE 3 NOTE48" x 48"TRAFFIC CONE (OPTIONAL TAPER)C20(CA)RC30(CA)HIGHWAYSSEE TABLE 2DDISTANCE SEE TABLE 3ADVANCE WARNING SIGNSEE TABLE 1 CONE SPACING XL/3SEE NOTE 3CONE SPACING SEE TABLE 1 AND NOTE 14.3.2.1.closure details and requirements.for Lane Closure on Freeways and Expressways" plan for laneFor approach speeds over 50 MPH, use the "Traffic Control Systemexcept that C20(CA)L and W4-2L signs shall be used.Median lane closures shall conform to the details shown Length may be reduced by the Engineer to address site conditions.throughout extended work area.Place C30(CA) "LANE CLOSED" sign at 500’ to 1000’ intervals8.7.6.5.NOTES:LEGENDSIGN PANEL SIZE (Min)AND NOTE 1SEE TABLE 1LSEE NOTE 6100’ TO 150’ MinSEE NOTE 4SEE NOTE 2AND 7SEE NOTES 2AND 7SEE NOTES 2SEE NOTE 5or on a horizontal curve.Lane closures shall not begin at the top of crest vertical curvepossible for vehicles approaching the first flashing arrow sign.A minimum 1500’ of sight distance shall be provided whereends within the larger project’s limits.the lane closure unless the end of work area is obvious orA G20-2 "END ROAD WORK" sign shall be placed at the end oflane closure during hours of darkness.Flashing beacons shall be placed at the locations indicated forin size and shall be orange or fluorescent red-orange in color.flags for daytime closure. Each flag shall be at least 16" x 16"Each advance warning sign shall be equipped with at least twoclosures only.for traffic cones may be used instead of cones for daytimePortable delineators placed at one-half the spacing indicatedCOUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNED No.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIACIVIL 2018 STANDARD PLAN T111-29-18T11for lane closures.Provide at least one person to continuously maintain traffic control devicesspacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z forSee Standard Plan T9 for tables.Atifa FerouzC804023-31-19288May 31, 2018Return to Table of Contents STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNO SCALEENDROAD WORKCAHEADWORKROADALDACLOSEDAHEADRIGHT LANEAW20-1W4-2RL/2CBAXXMPHABW1-4RW13-1PL/3G20-2L/2ACSIGN PANEL SIZE (Min)B48" x 48"24" x 24"36" x 18"LEGEND TEMPORARY TRAFFIC CONTROL SIGNTRAFFIC CONEPORTABLE FLASHING BEACONFLASHING ARROW SIGN (FAS)FAS SUPPORT OR TRAILERSEE TABLE 1SEE TABLE 2SEE TABLE 1TRAFFIC CONTROL SYSTEMMULTILANE CONVENTIONALSEE NOTE 2SEE NOTE 2C20(CA)RHIGHWAYS AND EXPRESSWAYSCLOSEDA LANEC30(CA)FOR CHANGEABLE LANE CLOSURE ONTYPICAL CHANGEABLE LANE CLOSUREPAST WORK AREA100' MINIMUM TAPERSECONDARY DISTANCE SEE TABLE 3ADVANCE WARNING SIGNNOTES: AND NOTE 1SEE TABLE 1CONE SPACING YAND NOTE 1SEE TABLE 1CONE SPACING XCLOSEDA LANEC30(CA)PAST WORK AREA100' MINIMUM SEE TABLE 2SEE TABLE 1DLSEE NOTE 3AND NOTE 1SEE TABLE 1CONE SPACING ZSEE NOTE 4SEE NOTE 5SEE NOTE 6SEE NOTE 5SEE NOTE 4SEE NOTE 2SEE TABLE 1within the larger project's limits.lane closure unless the end of work area is obvious or endsA G20-2 "END ROAD WORK" sign shall be placed at the end of thehours of darkness.shall be placed at the locations indicated for lane closure duringshall be orange or fluorescent red-orange in color. Flashing beaconfor daytime closure. Each flag shall be at least 16" x 16" in size andEach advance warning sign shall be equipped with at least two flagstraffic cones may be used instead of cones for daytime closures only.Portable delineators placed at one-half the spacing indicated for3.2.1.SECONDARY SETUPINITIAL SETUPCOUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDNo.Exp.REG IS T ERED P ROFESSIONALENGINEERSTATEOFCALI FOR NIACIVIL NOTES:for lane closures.Provide at least one person to continuously maintain traffic control devicesspacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z forSee Standard Plan T9 for tables.Atifa FerouzC804023-31-212018REVISEDSTANDARDPLANRSPT11AW20-1AHEADWORKROADACDSEE TABLE 2All Rights Reservedc 2019 California Department of TransportationOctober 18, 2019REVISED STANDARD PLAN RSP T11ADATED MAY 31, 2018 - PAGE 289 OF THE STANDARD PLANS BOOK DATED 2018.RSP T11A DATED OCTOBER 18, 2019 SUPERSEDES STANDARD PLAN T11A.WORK AREAWORK AREAENDROAD WORKCG20-2STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONAND 7SEE NOTES 2CONE SPACING Y SEE TABLE 1 AND NOTES 1 AND 7SEE TABLE 37.6.5.4.is in place.Sign installations and cones are not required when a median barrierRemove W1-4R/W13-1P sign package.Relocate secondary taper to tangent location and relocate C30(CA) sign.extended work area.Place C30(CA) "LANE CLOSED" sign at 500' to 1000' intervals throughoutnot begin at the top of crest vertical curve or on a horizontal curve.vehicles approaching the first flashing arrow sign. Lane closures shallA minimum 1500' of sight distance shall be provided where possible for5-8-19SEE NOTES 3 AND 7TO ACCOMPANY PLANS DATED STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNOTES: WORK AREAENDROAD WORKENDROAD WORKCACAHEADWORKROADALLDAXXMPHBCLOSEDAHEADRIGHT LANEAW20-1W4-2RW1-4LCBAL/2L/2CBAXXMPHABW1-4RW13-1PW13-1PL/3AG20-2G20-2L/2AHEADWORKROADW20-1AHEADLEFT LANECLOSEDACSIGN PANEL SIZE (Min)B48" x 48"24" x 24"36" x 18"LEGEND NOTES: TEMPORARY TRAFFIC CONTROL SIGNTRAFFIC CONEPORTABLE FLASHING BEACONFLASHING ARROW SIGN (FAS)FAS SUPPORT OR TRAILERSEE TABLE 1SEE TABLE 2SEE TABLE 1SEE TABLE 1SEE TABLE 1TRAFFIC CONTROL SYSTEMMULTILANE CONVENTIONALFOR HALF ROAD CLOSURE ONDISTANCE SEE TABLE 3ADVANCE WARNING SIGNDISTANCE SEE TABLE 3ADVANCE WARNING SIGNAND TABLE 1 SEE NOTE 2SEE NOTE 2W4-2LSEE NOTE 2SEE NOTE 2AATYPICAL HALF ROAD CLOSUREC20(CA)RC20(CA)LHIGHWAYS AND EXPRESSWAYSspacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z forSEE NOTE 3AND NOTE 1SEE TABLE 1CONE SPACING XAND NOTE 1SEE TABLE 1CONE SPACING ZAND NOTE 1SEE TABLE 1CONE SPACING XSEE NOTE 3SEE NOTE 5SEE NOTE 5devices for lane closures.Provide at least one person to continuously maintain traffic controlSEE NOTE 2SEE NOTE 4SEE NOTE 7SEE NOTE 2SEE NOTE 4SEE NOTE 6150’ Min,100’ TO7.6.5.4.3.2.1.COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNED No.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIACIVILThe tangent (L/2) shall be used.Length may be reduced by the Engineer to address site conditions.more than the posted or maximum speed limit.W13-1P Plaque will not be required when advidory speed isAdvisory speed will be determined by the Engineer, Theon a horizontal curve.Lane closures shall not begin at the top of crest verticle curve orpossible for vehicles approaching the first flashing arrow sign.A minimum 1500’ sight distance shall be provided wherelarger project’s limits.closure unless the end of work area is obvious or ends within theA G20-2 "END ROAD WORK" sign, shall be placed at the end of the laneduring hours of darkness.beacons shall be placed at the locations indicated for lane closureand shall be orange or fluorescent red-orange in color. Flashingfor daytime closure. Each flag shall be at least 16" x 16" in sizeEach advance warning sign shall be equipped with at least two flagsonly.traffic cones may be used instead of cones for daytime closuresPortable delineators placed at one-half the spacing indicated for2018 STANDARD PLAN T121-29-18T12See Standard Plan T9 for tables.Atifa FerouzC804023-31-19290May 31, 2018Return to Table of Contents STATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONNO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONAHEADRAMPCLOSEDAHEADRAMPCLOSEDAHEADARAMPCLOSEDAHEADARAMPCLOSEDRAMPCLOSEDEXITUSE NEXTCLOSEDLANEABAACR3-2CLOSEDCR3-1RAMPCLOSEDAHEADRAMPCLOSEDCLOSEDBRAMPRAMPCLOSEDAHEADRAMPCLOSEDBCR3-2B SEE TABLE 3ASEE TABLE 1L/3SEE TABLE 3BSEE TABLE 3ASEE TABLE 3BSEE TABLE 1L/3ASEE TABLE 3BAHEADRAMPCLOSEDAEXITUSE NEXTRAMPCLOSEDSTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONSTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONCLOSEDRAMPAHEADRAMPCLOSEDR3-1CSEE TABLE 3ASEE TABLE 3BBARRICADES, Min 3 PER LANE.ENTRANCE RAMP EXIT RAMP OR CONNECTORBARRICADES, Min 3 PER LANE.ENTRANCE RAMP SHOULDEREXIT RAMP OR CONNECTORSHOULDERTRAFFIC CONTROL SYSTEMFOR RAMP CLOSUREDISTANCE SEE TABLE 3ADVANCE WARNING SIGNDISTANCE SEE TABLE 3ADVANCE WARNING SIGN BARRICADESTRAFFIC CONE ABCD 48" x 36"48" x 48"48" x 30"36" x 36"C38(CA)C38(CA)C30(CA)C30(CA)C30(CA)C2(CA)C19(CA)C19(CA)C19(CA)C2(CA)C19(CA)C19(CA)C19(CA)C2(CA)C30(CA)C19(CA)C19(CA)AAADDAAAspacing is shown on this sheet.conflict situations, as appropriate, per Table 1, unless X, Y, or Z coneUse cone spacing X for taper segment, Y for tangent segment or Z forCONTROL SIGNTEMPORARY TRAFFICBEACONPORTABLE FLASHING NOTES:SEE NOTE 2AND NOTE 1CONE SPACING X SEE TABLE 1AND NOTE 1CONE SPACING X SEE TABLE 1SEE NOTE 2SEE NOTE 3AND NOTE 1CONE SPACING X SEE TABLE 1SEE NOTE 4AND NOTE 1CONE SPACING X SEE TABLE 1SEE NOTE 4SEE NOTE 3SEE NOTE 4SEE NOTES 2 AND 4RAMP3 CONES PER LANE CLOSED, SEE NOTE 6SEE NOTE 3Min 3 PER LANE.BARRICADES,LEGENDSIGN PANEL SIZE (Min)NOTES:EXIT RAMP OR CONNECTOREXIT RAMP OR CONNECTOR WITH ADDITIONAL LANEENTRANCE RAMP WITHOUT TURNING POCKETSENTRANCE RAMP WITH TURNING POCKETSTYPICAL RAMP CLOSURES2 AND 4SEE NOTES5 AND 7SEE NOTESSEE NOTE 3Min 3 PER LANE.BARRICADES,2 AND 4SEE NOTESC2(CA)5 AND 7SEE NOTES2 AND 4SEE NOTESSEE NOTE 72 AND 4SEE NOTESSEE NOTE 63 CONES PER LANE CLOSED,2 AND 4SEE NOTESSEE NOTE 7SEE TABLE 3ASEE TABLE 3A7.6.5.4.3. 2.1.devices for lane closures.Provide at least one person to continuously maintain traffic controlC2(CA) sign shall be black and white.closed lane and shoulder.A minimum of 3 cones shall be placed transversely across eachThe existing "EXIT" signs shall be covered during ramp closures.be the same as the guide sign.that refer to the closed ramp. The letter size on the overlay shall"closed" may be mounted. As directed by the Engineer on all guide signs"RAMP CLOSED" signs, black on orange overlay plates with the wordIn addition to placing the C19(CA) "RAMP CLOSED AHEAD" and C30(CA)less and Type ˛˛˛ for closures lasting longer than one week.Barricades shall be Type ˛, ˛˛ or ˛˛˛ for closures lastind one week orthe first C19(CA) sign during hours of darkness.red-orange in color. A flashing beacon shall be placed on top ofbe at least 16" x 16" in size and shall be orange or fluorescent equipped with at least two flags for daytime closure. Each flag shall Each advance warning C19(CA) "RAMP CLOSED AHEAD" sign shall betraffic cones may be used instead of cones for daytime closures only.Portable delineators placed at one-half the spacing indicated for2018 STANDARD PLAN T141-29-18T14See Standard Plan T9 for tables.PLANSAPPROVALDATEREGISTERED CIVIL ENGINEERDistCOUNTYROUTEPOST MILESTOTAL PROJECTSHEETNo.TOTALSHEETSTHE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORTHE ACCURACY OR COMPLETENESS OF SCANNEDCOPIES OF THIS PLAN SHEET.No.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIACIVIL Atifa FerouzC804023-31-19292May 31, 2018Return to Table of Contents COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERCIVILDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDBARRICADER9-11aR9-9R9-9AHEADWORKROADW20-1WORK AREAR9-11a DEPARTMENT OF TRANSPORTATIONSTATE OF CALIFORNIANO SCALELEGEND:NOTES:SIDEWALK CLOSEDCROSS HERESIDEWALKCLOSEDSIDEWALKCLOSEDSIDEWALK CLOSED CROSS HERE 1.2.3.SEE NOTE 3SEE NOTE 2SEE NOTE 2SIGN PANEL SIZE (Min)NOTES:PORTABLE FLASHING BEACONTRAFFIC CONESIGNAND PEDESTRIAN DETOURTYPICAL SIDEWALK CLOSURETEMPORARY PEDESTRIAN ACCESS ROUTESSIGN DESIGNATIONSIGN OR PLAQUESIGN SIZE24" x 12"24" x 18"SIDEWALK CLOSEDR9-9R9-11SIDEWALK CLOSED AHEADCROSS HERE24" x 12"R9-11aCROSS HERESIDEWALK CLOSED36" x 36"ROAD WORK AHEADW20-1fluorescent red-orange in color.Sign shall be equipped with at least two flags for daytime closure. Each flag shall be orange orAdvance warning sign is not required if the work area is within the limits of a larger work zone.allow pedestrian access.there are destination points between the detour and the work area. Locate the R9-11 sign toBarricades closing sidewalk shall cover the full width of the sidewalk. Use R9-11 sign whenOnly signs related to pedestrians are shown. For all other signs see appropriate T-sheets.SIGN ON BARRICADETEMPORARY TRAFFIC CONTROL2018 STANDARD PLAN T30on this sheet.per Table 1 unless X,Y, or Z cone spacing is shownsegment or Z for conflict situations, as appropriate,Use cone spacing X for taper segment, Y for tangentSee Standard Plan T9 for tables.1-29-18T30Atifa FerouzC804023-31-19296May 31, 2018Return to Table of Contents COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERCIVILDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDNOTES:BARRICADETEMPORARY CURB RAMPCHANNELIZING DEVICEWORK AREATEMPORARY BARRIER IF NEXT TO TRAFFICLEGEND:AHEADWORKROADW20-1R9-9SIDEWALKCLOSEDR9-9SIDEWALKCLOSEDDEPARTMENT OF TRANSPORTATIONSTATE OF CALIFORNIANO SCALENOTES:SEE NOTE 448" Min TO 60" Max (SEE NOTE 8)PORTABLE FLASHING BEACONTRAFFIC CONETEMPORARY TRAFFIC CONTROL SIGNSIGN ON BARRICADETEMPORARY TRAFFIC CONTROL1.2.3.4.5.6.7.8.TYPICAL SIDEWALK DIVERSION WITHIN ROADBEDTEMPORARY PEDESTRIAN ACCESS ROUTES9.10.SIGN PANEL SIZE (Min)SIGN DESIGNATIONSIGN OR PLAQUESIGN SIZE30" x 24"24" x 12"36" x 36"ROAD WORK AHEADW20-1PEDESTRIAN DETOURSIDEWALK CLOSEDM4-9bR9-9M4-9bDETOURM4-9bDETOUR2018 STANDARD PLAN T311-29-18T31on this sheet.per Table 1 unless X,Y, or Z cone spacing is shownsegment or Z for conflict situations, as appropriate,Use cone spacing X for taper segment, Y for tangentSee Standard Plan T9 for tables.See Standard Plan T34 for temporary curb ramp options.See Standard Plan A88A for detectable warning surface for curb ramps to apply to temporary curb ramps.maintain a minimum width of 48 inches and provide a 60 X 60-inch passing space at least every 200 feet.When it is not possible to maintain a minumum of 60 inches throughout the length of the pedestrian route,Separate the temporary pedestrian access route from traffic using a temporary barrier and a crash cushion if necessary.Barricades closing sidewalk shall cover the full width of the sidewalk.pedestrians to stray from the channelized path.All devices used to channelize pedestrian flow must connect such that gaps do not allowequipped with at least two flags for daytime closure. Each flag shall be orange or fluorescent red-orange in color.Advance warning sign is not required if the work area is within the limits of a larger work zone. Sign shall beThe temporary pedestrian access route must not lead into conflict with vehicles or work.Separate pedestrian walkway from traffic and work zone activities, when temporary walkway is adjacent to traffic.Only signs related to pedestrians are shown. For all other signs see appropriate T-sheets.Atifa FerouzC804023-31-19297May 31, 2018Return to Table of Contents COUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERCIVILDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDR9-10WORK AREASIDEWALK CLOSEDUSE OTHER SIDEW11-2W16-9PAHEADR9-9SIDEWALKCLOSEDAHEADWORKROADW20-1W11-2W16-7PW11-2W16-9PAHEADR9-11aSIDEWALK CLOSEDCROSS HEREW11-2W16-7PR9-10SIDEWALK CLOSEDUSE OTHER SIDEAHEADWORKROADW20-1DEPARTMENT OF TRANSPORTATIONSTATE OF CALIFORNIANO SCALENOTES:BARRICADELEGEND:PORTABLE FLASHING BEACONTRAFFIC CONETEMPORARY TRAFFIC CONTROL SIGNSIGN ON BARRICADETEMPORARY TRAFFIC CONTROLSEE NOTE 3SEE NOTE 2SEE NOTE 2R9-9SIDEWALKCLOSEDNOTES:1.2.3.AND PEDESTRIAN DETOURTYPICAL SIDEWALK/CROSSWALK CLOSURETEMPORARY PEDESTRIAN ACCESS ROUTESor fluorescent red-orange in color.Sign shall be equipped with at least two flags for daytime closure. Each flag shall be orangeAdvance warning sign is not required if the work area is within the limits of a larger work zone.allow pedestrian access.there are destination points between the detour and the work area. Locate the R9-11 sign toBarricades closing sidewalk shall cover the full width of the sidewalk. Use R9-11 sign whenOnly signs related to pedestrians are shown. For all other signs see appropriate T-sheets.R9-11aSIDEWALK CLOSEDCROSS HERESIGN PANEL SIZE (Min)SIGN DESIGNATIONSIGN OR PLAQUESIGN SIZE24" x 12"24" x 12"SIDEWALK CLOSEDR9-9R9-1024" x 18"R9-11CROSS HERE24" x 12"SIDEWALK CLOSEDR9-11a36" x 36"W11-224" x 12"W16-7P24" x 12"W16-9PUSE OTHER SIDESIDEWALK CLOSED AHEADSIDEWALK CLOSEDCROSS HEREPEDESTRIAN36" x 36"ROAD WORK AHEADW20-1AHEAD (PLAQUE)POINTING ARROW (PLAQUE)DIAGONAL DOWNWARD2018 STANDARD PLAN T32on this sheet.per Table 1 unless X,Y, or Z cone spacing is shownsegment or Z for conflict situations, as appropriate,Use cone spacing X for taper segment, Y for tangentSee Standard Plan T9 for tables.1-29-18T323-31-19C80402Atifa Ferouz298May 31, 2018Return to Table of Contents RAMPNO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONACCESS ROUTESTEMPORARY PEDESTRIANCOUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERCIVILDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNED ABCDEFGHHAND RAILEDGE PROTECTIONRAMPTOP LANDINGBOTTOM LANDINGSLOPECROSS SLOPEWIDTHLENGTHRIGHT SIDEHEIGHTLEFT SIDEHEIGHTRIGHT SIDERAILLEFT SIDERAIL8.3% OR LESS2.0% OR LESSOR GREATER48 INCHESOR LESS30 FEETFROM GROUNDINCHESWITHIN 2FROM GROUNDINCHESWITHIN 2 JK LMNOPICROSS SLOPEWIDTHDEPTHCROSS SLOPEWIDTHDEPTH2.0% OR LESS2.0% OR LESSOR GREATER48 INCHESOR GREATER60 INCHES2.0% OR LESS2.0% OR LESSOR GREATER48 INCHESOR GREATER60 INCHESABCDJILKPONMBOTTOM LANDINGRAMPTOP LANDING INCHES34 TO 38INCHES34 TO 38SLOPESLOPE2018 STANDARD PLAN T331-29-18T33Atifa FerouzC804023-31-19299May 31, 2018Return to Table of Contents NO SCALESTATE OF CALIFORNIADEPARTMENT OF TRANSPORTATIONB A F G G F E D C A B GFEDCAB K K K CURB RAMP OPTIONSACCESS ROUTESTEMPORARY PEDESTRIANCOUNTYROUTEPOST MILESTOTAL PROJECTSHEETTOTALSHEETSPLANSAPPROVALDATENo.Exp.REG IS T ERED P ROFESSIONAL ENGINEERSTATE OF CALI FOR NIA REGISTERED CIVIL ENGINEERCIVILDistNo.THE STATE OF CALIFORNIA OR ITS OFFICERSOR AGENTS SHALL NOT BE RESPONSIBLE FORCOPIES OF THIS PLAN SHEET.THE ACCURACY OR COMPLETENESS OF SCANNEDSI D E WA L K SI D E WA L K R A MP R A MP SI D E WA L K SIDEWA L K SIDEWALK R A MP C E DOPTION CSHOWN WITH SIDE EDGEPARALLEL RAMPOPTION COPTION BOPTION ASHOWN WITH SIDE APRONSHOWN WITH SIDE EDGE ABCDCURB RAMPTOP LANDINGEFGKNOTES:For a maximum rise of 6 inches a slope between 1:12 to 1:10 is allowed.For a maximum rise of 3 inches a slope between 1:10 to 1:8 is allowed.SLOPECROSS SLOPEWIDTHCROSS SLOPEWIDTHDEPTH8.3% OR LESS2.0% OR LESSOR GREATER48 INCHES2.0% OR LESS2.0% OR LESSOR GREATER48 INCHESOR GREATER60 INCHESMA XI MU M) (10 P E R C E N T S L O P E 1:1 0 MA XI MU M) (10 P E R C E N T S L O P E 1:1 0 SURFACEWARNINGDETECTABLEDEPTH36 INCHESMINIMUMSLOPEwith space limitations, the following slopes are allowed:If the above requirements cannot be met, on existing sites2018 STANDARD PLAN T341-29-18T34Atifa FerouzC804023-31-19300May 31, 2018Return to Table of Contents STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION NOTICE OF MATERIALS TO BE USED CEM-3101 (REV 09/2015) CT#7541-3511-1 NOTICE OF MATERIALS TO BE USED INSTRUCTIONS TO PERMITTEE/CONTRACTOR Section 6 of the State Standard Specifications states that, "Before the preconstruction conference, submit material source information on a Notice of Materials to Be Used form". To avoid delay in approval of materials, the Department of Transportation must receive, in a timely manner, Form CEM-3101, "Notice of Materials to Be Used." When filing this form, please comply with the following instructions: 1. The Contract Number/Permit Number and job limits should be the same as they appear on the special provisions/encroachment permit. 2. The column headed "Contract Bid Item Number" refers to the sequential item number of the contract, if applicable. 3. The column headed "Item Code" refers to the number for which the material is to be used, if applicable. It is a six-digit number. 4. The column headed "Contract Item Description" refers to an item description of the material as described in the special provisions or an item description to be used on the permitted project. 5. The columns headed "Item Component" refer to the specific description of material to be used, not necessarily the name of the contract item. For Example: Contract Bid Item Number Item Code Contract Item Description Item Component Item Sub-Component 1 520101 Bar Reinforcing steel Coupler (service splice) Service Splice, CJP welded 6. The column headed "Manufacturer/Provider" refers to the manufacturer/fabricator of the item. List the name, address, and email of the Manufacturer/Fabricator. Also, list the name and address of the location where inspection will occur, if different from the Manufacturer/Fabricator. 7. Form CEM-3101, "Notice of Materials to Be Used," must be submitted to the resident engineer (RE). The RE will email Form CEM-3101 to the materials administrator to: MaterialsAdministratorMETS@dot.ca.gov or fax to (916) 227-7084, Attn: Materials Administrator or postal mail to: Materials Engineering and Testing Services, 5900 Folsom Blvd., Sacramento, CA 95819, MS-5. If the sources of materials are not known at the beginning of a contract, submit a Form CEM-3101, "Notice of Materials to Be Used," for a given bid item as soon as a provider is known. Multiple submissions may be necessary. Submit a Form CEM-3101, "Notice of Materials to Be Used," for all changes or revisions. When placing orders for materials that require inspection prior to shipment, be sure to indicate on your request form that state inspection is required before shipment. Resident Engineer: Caltrans Permit Inspector - Jim McKrell Date: Materials required for use under Contract Number (1) Encroachment Permit Number - 0522-NSV-0140 District: 05 County: SLO Route: 101 Post Mile: 27.305/27.441 will be obtained from the following sources: Contract Bid Item Number (2) Item Code (3) Contract Item Description (4) Item Component (5) Manufacturer/Provider Name and Address (5) Manufacturer/Provider Email Address (6) It is requested that you arrange for sampling, testing and inspection of materials prior to delivery in accordance with Section 6 of the Standard Specifications. It is understood that source inspection does not relieve the prime contractor of the full responsibility for incorporating into the work, materials that comply in all respects with the contract plans and specifications, nor does it preclude the subsequent rejection of materials found to be unsuitable. Contractor Address Business Phone Business Fax E-Mail Address STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION NOTICE OF MATERIALS TO BE USED CEM-3101 (REV 09/2015) ADA Notice For individuals with sensory disabilities, this document is available in alternate formats. For alternate format information, contact the Forms Management Unit at (916) 445-1233, TTY 711, or write to Records and Forms Management, 1120 N Street, MS-89, Sacramento, CA 95814. (7) Copies: Materials Administrator, Mail Station #5 Materials Engineering & Testing Services 5900 Folsom Blvd, Sacramento, CA 95819 MaterialsAdministratorMETS@dot.ca.gov Fax: (916) 227-7084 (See Permit) (See Permit) TYPICAL PORTABLE CHANGEABLE MESSAGE SIGN PLACEMENT PORTABLE CHANGEABLE MESSAGE SIGN TRAFFIC LANE EDGE OF TRAVELED WAY 9 TRAFFIC CHANNELIZERS SPACED AT 25 FEET EDGE OF PAVEMENT SHOULDER PLAN VIEW (Not to Scale) 3 LINE MESSAGE 2 PANELS FRONT VIEW (Not to scale) TRAFFIC LANE SHOULDER EDGE OF TRAVELED WAY TRAVEL WAY 10’ MINIMUM 14.5’ MAXIMUM 7.0’ MINIMUM 200.0’ At the completion of the permitted work, please complete the form below and submit an electronic copy of this page sent by email to alan.kwong@dot.ca.gov. STATE OF CALIFORNIA • DEPARTMENT OF TRANSPORTATION NOTICE OF COMPLETION TR-0128 (REV. 6/2001) CT #7541-5529-1 PERMIT # 0522 NSV 0140 Permit Inspector: Jim McKrell Dear Sir or Madam: All work authorized by the above numbered permit was completed on: DATE: SIGNATURE OF PERMITTEE: City of San Luis Obispo FM 92 1546 M ADA Notice For individuals with sensory disabilities, this document is available in alternate formats. For alternate format information, contact the Forms Management Unit at (916) 445-1233, TTY 711, or write to Records and Forms Management, 1120 N Street, MS-89, Sacramento, CA 95814 0522 NSV 0140 05-SLO-101-27.305/27.441 02/18/2022 0522 NSV 0140 0522 NSV 0140 0522 NSV 0140 Proposed Exploratory Groundwater Boring 2005 PCE Delineation Appendix B Boring Locations City of San Luis Obispo Tetrachloroethylene Plume Characterization Project CT Archive Plan Set No.Caltrans Permit Plans - Permit No. 0522 NSV 0140 Page 1 of 8 Permittee / Contractor must contact State Inspector a minimum of 2 weeks prior to starting work. 04/28/2022 Groundwater Sampling Soil Sampling Groundwater Sampling Cone Penotrometer3 Drilling Total Depth (feet bgs) Continuous-Core Soil Sampling (feet bgs) Drilling Total Depth Preliminary Sampling Depths4 (feet bgs) Continuous-Core Soil Sampling Drilling Total Depth (feet bgs) Preliminary Sampling Depths4 (feet bgs) B-01 Dana Street 35.277096 -120.669451 10 50 --15, 25, 50 2 ------ B-02 Higuera Street 35.276501 -120.668419 10 50 50 15, 25, 50 3 ------ B-03 Carmel Street 35.276116 -120.668263 10 50 --15, 25, 50 2 ------ B-04 Marsh Street 35.275865 -120.667678 10 50 --15, 25, 50 2 ------ B-05 Bianchi Lane 35.272493 -120.670558 10 50 --15, 25, 50 2 ------ B-06 Bianchi Lane 35.272452 -120.670244 10 50 --15, 25, 50 2 ------ B-07 Bianchi Lane 35.272453 -120.669903 10 50 --15, 25, 50 2 ------ B-08 High Street 35.272144 -120.669482 10 50 50 15, 25, 50 3 ------ B-09 High Street 35.272233 -120.668543 10 50 --15, 25, 50 2 ------ B-10 High Street 35.272236 -120.667981 10 50 --15, 25, 50 2 ------ B-11 Madonna Road 35.264866 -120.675395 15 70 70 20, 35, 50, 70 3 ------ B-12 Madonna Road 35.265250 -120.674858 15 70 --20, 35, 50, 70 2 ------ B-13 Madonna Road 35.267161 -120.672145 15 60 --15, 25, 50 2 ------ B-14 Madonna Road 35.267997 -120.671071 15 50 --15, 25, 50 2 ------ B-15 Higuera Street 35.267699 -120.670339 15 50 50 15, 25, 50 3 ------ B-16 Bridge Street 35.267558 -120.669605 15 50 --15, 25, 50 2 ------ B-17 CalTrans Right-of-Way 35.263176 -120.674151 15 70 70 20, 35, 50, 70 3 ------ B-18 Madonna Road 35.262458 -120.678733 15 70 --20, 35, 50, 70 2 ------ B-19 El Mercado 35.261600 -120.677292 15 70 --20, 35, 50, 70 2 ------ B-20 El Mercado 35.260630 -120.675855 15 70 --20, 35, 50, 70 2 ------ B-21 El Mercado 35.259399 -120.674224 15 70 70 20, 35, 50, 70 3 ------ B-22 Prado Road 35.256509 -120.673557 15 85 --20, 35, 50, 70, 85 2 ------ B-23 Prado Road 35.255696 -120.671819 15 85 --20, 35, 50, 70, 85 2 ------ B-24 Prado Road 35.255200 -120.670619 15 85 85 20, 35, 50, 70, 85 3 ------ B-25 35.257113 -120.681447 15 --------100 20, 35, 50, 70, 85, 100 2 B-26 35.256222 -120.680165 15 --------100 20, 35, 50, 70, 85, 100 2 B-27 35.257041 -120.677594 15 --------100 20, 35, 50, 70, 85, 100 2 B-28 35.256405 -120.675901 15 --------100 20, 35, 50, 70, 85, 100 2 B-29 Unnamed City of SLO Right-of-Way 35.253649 -120.675604 15 --------110 20, 35, 50, 70, 85, 105, 130 2 B-30 Zaca Lane 35.251438 -120.673499 15 --------130 20, 35, 50, 70, 85, 105, 130 2 B-31 Zaca Lane 35.250928 -120.672202 15 --------130 20, 35, 50, 70, 85, 105, 130 2 B-32 Auto Park Way 35.250798 -120.683530 15 --------160 20, 35, 50, 70, 85, 105, 130, 145, 160 2 B-33 Los Osos Valley Road 35.242363 -120.679413 15 50 50 15, 25, 50 3 ------ B-34 South Higuera Street 35.241530 -120.676851 15 50 --15, 25, 50 2 ------ B-35 --70 --20, 35, 50, 70 2 ------ B-36 --70 70 20, 35, 50, 70 3 ------ B-37 --70 --20, 35, 50, 70 2 ------ B-38 --70 --20, 35, 50, 70 2 ------ B-39 ----------160 20, 35, 50, 70, 85, 105, 130, 145, 160 2 Notes: all depths are feet below ground surface (bgs) -- not applicable * Location of contingency borings to be determined based on collected data, access agreements, and/or drilling limitations. 1 Direct-push drilling rig with appropriate static weight and hydraulic hammer to reach target depths (e.g., CPT truck, truck-mounted Geoprobe 6600) 2 Resonating rotary sonic drilling rig with small footprint capable of reaching target depths (e.g., track mounted limited access small sonic drilling rig, TSi 150cc Compact-Crawler) 3 Final sampling depths will be selected upon completion of adjacent soil boring by City of San Luis Obispo or their authorized agent/consultant. 4 Cone Penetrometer testing (CPT) using a direct-push drill rig capable of reaching target depths. CPT shall use an integrated electronic cone system to measure tip resistance, sleeve resistance, and pore water pressure. CPT shall be conducted in accordance with revised ASTM standard D5778-12. 5 City approved depth-discrete groundwater sampling method (e.g., dual-tube/wall sampler, Hydropunch™, Simul-Probe®) Direct Push Drilling Contingency Borings* (locations to be determined) Boring Identification Location/Description Sonic Drilling Contingency Borings* (locations to be determined) Precise locations will be determined based on City of San Luis Obispo access agreements. Appendix C Table 1 Tetrachloroethylene Characterization Project Drilling and Sampling Depth Summary Direct Push Drilling1 # of boreholes at each location Approximate Depth-to-Water Spring 2019 (feet bgs) Latitude Longitude Sonic Drilling2 # of boreholes at each location Soil Sampling Coordinates CT Archive Plan Set No.Caltrans Permit Plans - Permit No. 0522 NSV 0140 Page 2 of 8 Permittee / Contractor must contact State Inspector a minimum of 2 weeks prior to starting work. 04/28/2022 Aerial View Boring Iden fica on: B-11 Coordinates: 35.264866, -120.675394 Approximate Street Loca on: Madonna Road Street View Street Photo B-11 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings CT Archive Plan Set No.Caltrans Permit Plans - Permit No. 0522 NSV 0140 Page 3 of 8 Permittee / Contractor must contact State Inspector a minimum of 2 weeks prior to starting work. 04/28/2022 0522 NSV 0140, page 3 3/29/2022 CT Archive Plan Set No.Caltrans Permit Plans - Permit No. 0522 NSV 0140 Page 4 of 8 Permittee / Contractor must contact State Inspector a minimum of 2 weeks prior to starting work. 04/28/2022 Aerial View Boring Iden fica on: B-12 Coordinates: 35.265250, -120.674857 Approximate Street Loca on: Madonna Road Street View Street Photo B-12 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings CT Archive Plan Set No.Caltrans Permit Plans - Permit No. 0522 NSV 0140 Page 5 of 8 Permittee / Contractor must contact State Inspector a minimum of 2 weeks prior to starting work. 04/28/2022 0522 NSV 0140, page 4 3/29/2022 CT Archive Plan Set No.Caltrans Permit Plans - Permit No. 0522 NSV 0140 Page 6 of 8 Permittee / Contractor must contact State Inspector a minimum of 2 weeks prior to starting work. 04/28/2022 Aerial View Boring Iden fica on: B-17 Coordinates: 35.263176, -120.674151 Approximate Street Loca on: Adjacent to Highway 101 On-Ramp Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-17 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project CT Archive Plan Set No.Caltrans Permit Plans - Permit No. 0522 NSV 0140 Page 7 of 8 Permittee / Contractor must contact State Inspector a minimum of 2 weeks prior to starting work. 04/28/2022 0522 NSV 0140, page 5 3/29/2022 CT Archive Plan Set No.Caltrans Permit Plans - Permit No. 0522 NSV 0140 Page 8 of 8 Permittee / Contractor must contact State Inspector a minimum of 2 weeks prior to starting work. 04/28/2022 Public Works Department• 919 Palm Street• San Luis Obispo, CA 93401-3218 ENCROACHMENT PERMIT Capital Improvement Project ENCR-0406-2022 USA#: N/A Location: X-streets: various locations Other permits required: Project Name: Groundwater Contamination Characterization CIP Contractor: Gregg Drilling, LLC Andrew Gregg 562-427-6899 -Front,ge Improvements Complete/Upgraded -Curb Ramp Complete/Upgraded -City Fiber -Bua Route -Sewer Wye Description of Work: Groundwater Contamination Characterization Project, CIP Specification #91506A • All work to be done per City CIP Spec . #91506A and City Standard Specifications & Engineering Standards . A traffic and pedestrian control plan must be submitted, reviewed, and approved prior to each phase of the work . Traffic and pedestrian controls must be per an approved plan and City Appendix G & MUTCD Standards. Contact City Publlc Works Inspector Bobby Browning at 805-540-1031 to coordinate Job Inspections and Information. Permlttee Is responslble for calllng for final Inspection so the permit can be closed . All work performed within the rlght-of•way ,hall confonn to the City of San Lui• Obl1po Englnttrlng Standard Oetall• and Standard Speclflcatlont, You are responsible for liablllty for pel'lonal Injury and / or property damage caused by this work or your failure to do what you are obligated to do . If a claim of such llablllty Is made against the City or any of Its departments, officers, or employees, you shall, and hereby agree to, defend and Indemnify the City and hold the City harmless from any claims, Including costs of defense and attorney fees. All work shall be completed and the right-of-way re,tored by: October 28. 2022 AGREEMENT; I have read this permit and acknowledge receipt of the City of San Luis Obispo Encroachment Permit General Provisions and g s of attached spgcjpl conditions which I have read, agree to, and acknowledge as a part of this ~rm· . Date Print Name Issued By Date ( ( Final Inspection By Date The City of San Luis Obispo Is committed to Include the disabled in all of its services, programs and activities. ~ Telecommunications Device for the Deaf (805) 781 -7410. ~ COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra WaySTE. B. San Luis Obispo, CA 93401 PO Box 1489, San Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us El-MONITORING WELL PERMIT APPLICATION NUMBER OF WELL SITE INFORMATION OFFICE USE Permit No.. Submittal Complete □ Date_ wp No. Vju 'P \ 0 ^ 9^ Invoice No.. Scanned J.J_ Proposed Well Site Address End of Dana Street City or Area Sa" '-"'s Oi=>'sp° Assessor's Parcel Number street right-of-way GPS 35.277276 ^ 120.669407 Site served by a water company, agency or district? □ No □ Yes W Coastal Zone? No Water Co. Name ofSamuaObispo WELL OWNER INFORMATION [ Well Owner ^'*7 '-"'® Obispo Telephone Number 805-781-7215 PROPERTY OWNER INFORMATION 1 Pronertv Owner Name Oity of San Luis Obispo Mailine Address 879 Morro street Gity San Luis Obispo 2\o 93401-2710 Telephone Number 701-7215 Email nteague@slocity.org 1 WELL CONSULTANT INFORMATION 1 Consultant Comoanv Water Systems Consulting Telephone Number 805-215-0764 1 Consultant Name Reynolds Email jTeynolds@wsc-jnc.com 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD Q Construction 1 1 Monitoring 1 1 Electric > 50' Q Cathodic Protection 2 50'1 1 Rotary 1 1 Cable Tool 1 1 Repair/Modify 1 1 Test Weil m Soil Testing 2 25' Q Sparging 2 25'1 1 Reverse Rotary m other 1 1 Vapor Extraction (Permit required for listed depth or encountering groundwater)1 1 Air Rotary CPT Proposed Depth Casing Diameter "* Annular Sea! Depth Seal Material .Proposed Length of Work ^ Agency requiring monitoring weil implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name Bna"Saveia C-57 License No. 1044456 Drilling Company Name Gregg Drilling, LLC .Telephone Number 562-427-6899 Mailing Address Walnut Ave.. Signal Hill, CA 90755 Fax (562)424-2329 Email Address bsavelaQgfeggdnlllng.ccm I hereby agree to comply with all applicable laws and regulations of the County of San Luis Obispo and the State of California pertaining to well construction, destruction, repair or modlflcadon. Within sixty days after completion of the well. I will furnish Environmental Health Services with a well completion report. This application becomes a valid permit following sign off by Environmental Health Services. ORILUNS SHALL NOT COMMENCE UNTIL THIS APPUCATtON IS APPROVED (EHS rcQulres 4S hour notice before completion of work) Contractor Signature Brian Savela Contractor Printed Name Brian Savela Date 02-23-2022 RECEIVED BY WELL SITE APPROVED; YES WELL SITE APPROVAL CPS FOR OFFICE USE ONLY DATE.--^^Wh PAID $_CTQ CK/^c) (Coordinates/v PERMlttXPIRATION DATE. SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR WELLSEALWtTNESSED YES □ NO □ BY. WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAV STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS@CO.SLO.CA.US SCALE: %" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECTTO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. r 7 Environmental Health Services Division Public Health Department Health Agency Ksp for PkrpoM Onir Th* ccuntr of Sn Lus OD«o toDlilrfor (fTorsci «nr OfArtrlOf«. 8«u HB acci^Bft AT] r9t9tlU M200Dr 1 ^ncn* lOOrst s7s''rv mcatoci, aiMaricei. areas ana cooranates srmn rereort, tf any. ^iprDximace VM drfl« ro ln«c«temeeatBa locanon er pf«po«al mi$ ««h retacd n the wHience «iy or the foUontno Remo MBn»> e XD root r^us property iner aMorants: nats boatot or weia counec dranege panem: roatfc Maing wait; eawe and ptKtae eewaao dKpOMi fyitrrm. arVmBl enefosuros and any other pQimtial eourcM of pofluiton •M conlinnaion idenuiieil in itae aandcitf aa and arty afwa «Mh fcmtyn or wepaded aeil or wala petuicn or utntamnann. Inc&ide tfmenaMnt. Ml proposed taed sloe diai bo daoM'soied wBi a fl mpod •UMvyof's aau loMlotl mu elo.' Dtiaine stmI n« corrmnco tottl DMs «plcane n Is *pr9r«d. q •./1 Q/2022 Directions to site: FoI'o"' US-101 N to Broad St in San Luis Obispo. Take exit 202B from US-101 N. Turn right onto Peach St, Continue onto Nipomo St, Turn right onto Dana St Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contraaor: GREGG DRILLING Permit ID WP1027332 Permit#: 2022_015 Permit Expiration Date: VO - ^ APN#: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 [ (P) 805-781-5544 | (F) 805-781-4211 www.slQpublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING GREGG DRILLING WP1027332 2726 WALNUT AVENUE Permit#: 20^^015 . Permit Expiration Date: \ ft — V — TwTs SIGNAL HILL, CA 90755 The referenced permit is approved provided the following Items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite 8 | San Luis Obispo, CA 93401 | (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borensteln, MD, MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address: DANA STREET. SAN LUIS OBISPO Permit Number: 2022_015 WP: WP1027332 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soli Boring The referenced work was completed on . As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologlst or Well Consultant Name Registration number Signature Date County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite 8 | San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopubllchealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2756 Sierra WaySTE. B, San Luis Obispo, CA 93401 PO Box 1489. San Luis Obispo. CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Emaii: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLSZ. OFFICE USE Permit No. Submittal Complete □ Date / 2- ^ ^ ^wp No. u.)Y 3_y Invoice No. \, ?.7C: - Scanned / / SITE INFORMATION Proposed Well Site Address Carmei street City or Area ^uis Obispo Assessor's Parcel Number right-of-way GPS 35.275910 |yj 120.668101 WELL OWNER INFORMATION I Well Owner Luis Obispo Site served by a water company, agency or district? □ No Yes W Coastal Zone? No _ Water Co. I .Telephone Number eos-781-7215 PROPERTY OWNER INFORMATION Property Owner Name Luis Obispo Mailing Address S79 Morro street Gity San Luis Obispo Zip 93401-2710 Telephone Number 78i-72is Email nieague@slocity.org WELL CONSULTANT INFORMATtON Consultant ComDanv water Systems Consulting Teieohone Number ®05-215-0764 1 Consultant Name -Joshua Reynolds Email jreynolds@wsc-lnc.com | 1 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD 51 Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction □ Electric £ 50' □ Cathodic Protection a SO' □ Soil Testing 2 25' □ Sparging ^ 25' (Permit required for listed depth or encountering groundwater) I I Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool rn other CPT Proposed Depth Casing Diameter Annular Seal Deoth Seal Material .Proposed Length of Work ^ Agency requiring monitoring well implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name a^ian Sav^a C-57 License No. 7044456 Drilling Company Name Gregg Drilling, LLC .Telephone Number 562-427-6899 Mailing Address 7726 Walnut Ave., Signal Hill, CA 90755 Fax (562)424-2329 Email Address t1saveiaa9fe9ad1i11ift9.com I hereby agree to compty with all applicable laws and regulations of the County of San Luis Obispo and the Slate of California pertaining to well construction, destruction, repair or modification. Within sixty days after completion of the well, I will furnish Environmental Health Services with a well completion report. This application becomes a valid permit following sign off by Environmental Health Services. DRILUNG SHALL NOT COMMENCE UNTIITHIS APPUCAT10N IS APPROVED [EHS requires 48 hour notice before completion of work) by B tanC D 02ontractor Signature Brian Savela Contractor Printed Name Savela ate -23-2022 FOR OFFICE USE ONLY -.,-1 DA3^^ FEE PAID $ \ g g ^ - CK/gcL-. WELL SITE APPROVED: NO U DATE, RECEIVED BY WELL SITE APPROVAL GPS COORDIN PERMIT EXPIRATION DATE SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR WELL SEAL WITNESSED YES □ NO Q BY. WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAY STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS@CO.SLO.CA.US SCALE: %" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECTTO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE UBELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. nEJSPfi.y % , ; <^^£oec:5^., 9if// 4 .^2 Environmental Health Services Division i Public Health Department Health Agency ' 1 i^ivi ncri' lOOtKlT^«Col;Mr taD4*r fcr an d4m3Q«s csus*d 9i tTTs «r an'.9«ris n ir>« a iro trMm no wAiryer locao^. d . sress cocvondn er*f>r KM. *&fiu cw r*n>«e irai Pirs« 0»a «r« aecijrit* kq ivvti* snoNan hercron, 13ny. arv 9p(m)tima& ¥m «ihr 10 moKotoQioMd locaaoD </ «ra»ocM mi mnitmta u Om <« w of lh» wimmb Mm Mhn o zed roa mok ttopwif ooMwoim: wir Mim or eeuiooc ««aom MOota; totfc lodli; «*M>t anfl piMo ooh^o onpeod system, awM cMMreooae sey ether pMonnii aoorcM tf poitfieo «M cootameaco unttM in siae fteodvd fta end stv «n«s wtt ktrma Of SMHOffif SOU ft neur poaewa or cortemmicA, Bcfttot aneMion^ JUl propoeod «■* Moo «ai bo datiQiulod ««i «itvooi smoyoi's tteho tahoM "wdJ 9U.' Oflhng sfni net ccsrvTcnco wt4DBS 9Picalxials«pemd. (y2/\ 5/2022 DIrSCtionS to sits: PoI'o**' us-toi N to Marsh St. Take exit 202A from US-101 N, Turn right onto Caimel St Coordinates: B-02 35.276260 N, 120.668381 W; B-03 35.275910 N, 120.668101W: B-04 35.275625 N. 120.667671 W Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael H'lWHealth Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID: WP1027333 Permit#: 2022_016 Permit Expiration Date: APN #: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. if you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B j San Luis Obispo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING GREGG DRILLING 2726WALNUTAVENUE SIGNAL HILL, CA 90755 ^PN #: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure In accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suites | San Luis Obispo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD. MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address: CARMEL STREET, SAN LUIS OBISPO Permit Number: 2022_016 WP: WP1027333 APN: Select: □ Monitoring Weil Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on . As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologist or Well Consultant Name Registration number Signature Date County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B j San Luis Oblspo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra WaySTE. B, San Luis Obispo, CA 93401 PO Box 1489, San Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLS 6 City or Area Luis Obispo Site served by a water company, agency or district? □ No □ Yes Water Co. Name'^"y''^^^"'-"'^°'"^P° Proposed Well Site Address Bianchi Lane Assessor's Parcel Number street ri gm-of-way W Coastal Zone? ^0GPS 35.272451 |\j 120.670244 SITE INFORMATION WELL OWNER INFORMATION Permit No.. Submittal Complete □ wp No. ^ \ o ^ *7 3 3 Invoice No.. \ 2>1 ^ Scanned ! f OFFICE USE I Well Owner Obispo .Telephone Number 805-781-7215 PROPERTY OWNER INFORMATION Property Owner Name Obispo Mailing Address 879 Morro street Gity San Luis Obispo Zip 93401-2710 Telephone Number 791-7215 Email nteague@si0dty.0r9 WELL CONSULTANT INFORMATION Consultant Ccmoanv^^i®'' Systems Consulting Teleohone Number ®05-2l5-0764 Consultant Name Reynolds Email jreynolds@wsc-inc.com 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD 51 Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction □ Electric a 50 □ Cathodic Protection a 50' □ Soil Testing >25' □ Sparging > 25' (permit required for listed depth or encountering groundwater) I I Rotary □ Reverse Rotary □ Air Rotary □ Cable Toot m Other CPT Proposed Depth Casing Diameter Annular Seal Depth Seal Material .Proposed Length of WorkQ'^^ys Agency requiring monitoring well implementation, and/or reason for monitoring well: Bohngs for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name saveia C-57 License No. 1044456 Drilling Company Name Gregg Drilling. LLC .Telephone Number 562-427-6899 Mailing Address 7.72Q Walnut Ave., Signal Hill, CA 90755 Fax (562)424-2329 Email Address fsa^'aQgregsdriiimg.coin I herebyagree to comply with all applicable laws and regulations of the County of San Luis Obispo and the State of California pertaining to well construction, destruction, repair or trsodrffcation. Within sixty days after completion of the well, I will furnish Environntenta! Health Services with a well compleb'on report, This application becomes a valid permit following sign off by Environmental Health Services. ORIIUNG SHAU. NOT COMMENCE UIVTILTHIS APPUCATION IS APPROVED (EHS requires 49 hour netfce before completion of work) i>9.taJV sy Bn»i SmuC Dontractor Signature Brian Savela o.xi Contractor Printed Name Savela ate 02-23-2022 RECEIVED BY WELL SITE APPROVED: VESE) NO WELL SITE APPROVAL GPS COORDINAT FOR OFFICE USE ONLY ; FEE PAID $\Q\ H- date^^x PERMIT EXPIRATION DATE. SPECIAL REQUIREMENTS FOR DRILLING CONTRAaOR W WELL SEAL WITNESSED YES □ NO □ BY. WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUiS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAY STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS@CO.SLO.CA.US SCALE: >4" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPEaTO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. V/ M* SAW LOIS OBI^P.O.. VALLEY,E GLYD 19 ?9 fl ammant at IlfHiGT ws-- Environmental Health Services Division Public Health Department Health Agency UaplorRsrmtKa PifpoMS OnV TheCojntr LuftOD4POdo•9f^o1 hatii^ fo mr umigHcMUQ Dy enas a g of griy Inh0. ■(Wft*w irryiitaa inat ttiaw data arg actvat at] raiaM 1 ^TOQOf I W 100^ nt irid makot rewTvtir LocMcns, 0ritmcei, vea} and coaanSesshown herotsTi, if any, are MM «iiv 10 ntfcMChe Md tacottvi tf evopocm «m msi tt^iaa to thg BoMonca ef aiy of ^ fidkNaaig dama iMifi a an tool iMiic proiMly Inoi; —awnafa; Mai boOWa or wiM covnos drdnapo pmrnti nAs Mttrn wAa; wima vid paMa aaiMia diavowi avstaim, Meal mdoawat M any ott«r potcnBaf cources tf p«i«non •nd contamdion aiwiinM in s)M aUMvd lie and ory ar«a mUi hnoivn or auipaaod aal m vms poiuion or Bmniuliaa. Muds diirmiDfis. Ml DfMOiM wM SUM mm M daaajfwad adui a fl isoM aufvayW fUM lebowi m*." Ooino anal oat uaiaimito tMtUMa aoMcailafi la wonM. Q2/16/2022 Directions to site: follow US-101 N to Marsh St, Take exit 202A from US-101 N, Turn ri ght onto Higuera St,Turn ri ght onto Blanch! Ln Coordinates: B^5 35.272492 N, 120.670557 W; B-06 35.272451 N. 120.670244 W: B-07 35.272463 N. 120.669902 W Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael H\\\Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID WP1027334 Permit#: 2022_017 Permit Expiration Date: \ D - ^ — APN #: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suites | San Luis Obispo, CA 93401 j (P) 805-781-5544 [ (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID WP1027334 Permit#: 2022.017 Permit Expiration Date: lO—SIGNAL HILL, CA 90755 ^PN #: ^ GREGG DRILLING 2726 WALNUT AVENUE The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of Installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B [ San Luis Oblspo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael H\\\Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address: BIANCHI LANE, SAN LUIS OBISPO Permit Number: 2022_017 WP: WP1027334 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on , As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologist or Well Consultant Name Registration number Signature Date County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra WaySTE. B, San Luis Obispo, CA 93401 PO Box 1489, San Luis Obispo, CA 93406 jllplP^^ Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLSZ City or Area San Luis Obispo Site served by a water company, agency or district? D No Q Yes Water Co. Name LuisObispo Proposed Well Site Address ^*'9^ street Assessor's Parcel Number right-of-way W Coastal Zone? *^0GPS 35.272233 fvj 120.668543 SITE INFORMATION WELL OWNER INFORMATION OFFICE USE Submittal Complete □ Date i A. W / WP No. Invoice No. \ a -| 7X Scanned / / Permit No. .Telephone Number 805-781-7215 PROPERTY OWNER INFORMATION Property Owner Name Obispo Mailing Address 879 Morro street Gity San Luis Obispo Zip 93401-2710 Telephone Number 781-7215 Email nteague@slocity.org WELL CONSULTANT INFORMATION Consultant Comoanv Water Systems Consulting Teleohone Number 305-215-0764 1 Consultant Name J°shua Reynolds Email jreynolds@wsc-inc.com | 1 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction □ Electric a SO' □ Cathodic Protection a 50' □ Soil Testings25' □ Sparging 2 25' (permit required for listed depth or encountering groundwater) I I Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool rn Other CPT Proposed Depth Casing Diameter 'n Annular Seal Depth Seal Material .Proposed Length of Work ^ tiays Agency requiring monitoring well implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name Brian Saveia C-57 License No. "'044456 Drilling Company Name Gregg Drilling. LLC .Telephone Number 562-427-6899 Mailing Address 7.726 Walnut Ave., Signal Hill, CA 90755 Fax (562)424-2329 Email Address PwyelaQgreofldrtfllng-com Iherebyagree tocomplY with all applicable laws and regulations of theCounty of San Luis Obispo and the State of California pertaining to well construction, destruction, repair or modlhcatton. Within sixty days after completion of the well, I will furnish Environmental Health Services with a well completion report, This application becomes a valid permit following sign off by Environmental Health Sen/ices. □RILUNG SHAU NOT COMMENCE UNTIL THIS APPUCATtON IS APPROVED (EHS requires 4S hour notice before completien of work) Contractor Signature Brian Savela ^■vii7<aS<i7Ttv>cew Contractor Printed Name Brian Savela Date 2-23-2022 RECEIVE BYWELL SITE APPROVED: YE^ NOD WELL SITE APPROVAL GPS COORDINATES PERMllilfPIRATlON DATE SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR DATE FOR OFFICE USE ONLY ^ "7 pm s cij^ccO \ / WELL SEAL WITNESSED YES □ NO □ BY_ WELL SEAL GPS COORDINATES DATE.DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAY STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS(S)CO.SLO.CA.US SCALE: %" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECTTO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. ffi? SANL-UISlCe ^iTiTe" TITTM? Environmental Healtti Services Division Public Health Department Health Agency Hap air OrtV C v*r Of Ssp 0o«P4 rts wsjrrv ^ . .. MBiar ta mt qaiRapn catsco dv tmn a vnwtt tM efla aro nMp rowwrm* LOCfSOns. distance?. W9i ano etxnanse) afviv kn), •ormof utM imc nasa «ia an actufiM m wom Wiim ftCtor. t any.are apprcDmste VWtMliff 1ft bidkHaffift atodloeMkin propftaad «afl H*»ifdanedlo 010 Klaranca of any of ttie rHIovittg Hairw Mhh ft 200 fool rsduft: ptcipvly tntR oMmpntK war bodiaa or wH* cwnftci drvnaop pmmii raise aHalno ««riia; aawa and prMHa aeH^a Slapesil mnl pidoairoand ay oOmt potnOal mscM of soSuMn and caniinw>H>on idviUM In ttmrn Hartal t« art any mm* wUi mmm fl< ampaart art or wmw potMion or tsflaniAaUrt. Mferrt Aianstortt. AO ptopftArt rtl sftao M «dOi a tlassad «aM mtm *««1 art.* DSine alWl M uiJiiiraif oral na MoBftnii Mart. 02/15^22 Directions to site^ FoIKow US-101 N to Marsh St, Take exit 202A from US*101 N, Turn nght onto Higuera St. Turn left onto Walker St, Tum left onto High St Coordinates: B-08 35.272143 N, 120.669482 W; B-09 36.272233 N, 120.668543 W: 8-10 35.272235 N, 120.667981 W Gate code(s) and survey contact Information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael HiW Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID: WP1027335 Permit#: 2022_018 Permit Expiration Date: \0— APN #: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID WP1027335 2726 WALNUT AVENUE 1 O ^ \ ^ 'J.'v SIGNAL HILUCA 90755 ^PN #: GREGG DRILLING The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suites j San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address: HIGH STREET, SAN LUIS OBISPO Permit Number: 2022_018 WP: WP1027335 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on... As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologistor Well Consultant Name Registration number Signature Date County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra WaySTE. B, Son Luis Obispo, CA 93401 PO Box 1489, San Luis Obispo. CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLS 9 OFFICE USE Permit No Date. WP No Invoice No. Scanned tal Complete □ g / xH / ax SITE INFORMATION Proposed Well Site Address Mador'na Rd City or Area San Luis Obispo Assessor's Parcel Number street right-of-way GPS 35.265250 120.674857 WELL OWNER INFORMATION I Well Owner Obispo Site served by a water company, agency or district? □ No □ Yes W Coastal Zone?J^!S Water Co. NameiiiL°'®'""-""°'"®'^ .Telephone Number PROPERTY OWNER INFORMATION Property Owner Name Obispo Mailing Address S79 Mon-o street Gity San Luis Obispo Zip 93401-2710 Telephone Number tsosi^ai-rzis Email ntea9ue@st0city.org WELL CONSULTANT INFORMATION Consultant ComDanv Systems Consulting Teieohone Number 805-215-0764 Consultant Name Joshua Reynolds Email jreynolds@wsc-inc.com 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction □ Electric 2 50' □ Cathodic Protection > 50' □ Soii Testing 2 25' □ Sparging 2 25' (Permit required for listed depth or encountering groundwater) I I Rotary □ Reverse Rotary □ Air Rotary □ Cable Tcoi m Other CPT Proposed Depth ft Casing Diameter'''^'" Annular Seal Depth Seal Material .Proposed Length of Work^^^V^ Agency requiring monitoring well implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name ^aveia C-57 License No. ^044456 Drilling Company Name Gregg Drilling, LLC .Telephone Number 562-427-6899 Mailing Address Walnut Ave., Signal Hill, CA 90755 Fax (562)424-2329 Email Address bMveiaS^dniiing^ I hereby agree to comply with ail applicable laws and regulations oMhe County of San Luis Obispo and the Stateof California pertaining to well construction, destruction, repair or modification. Within sixty days after completion of the well, I will furnish Environmental Health Services with a well completion report. This application becomes a valid permit following sign off by Environmental Health Services. DRILUHG SHALL NOT COMMENCE UNTIL THIS APPUCATION IS APPROVED |EHS requires 48 hour notice before completion of work) Contractor Signature Brian Savela Contractor Printed Name Savela Date 02-23-2022 RECEIVED RY L DATE WELL SITE APPROVED: YESO NOD BY. WELL SITE APPROVAL GPS COORDINATES PERMIT IRATION DATE J^OR OFFICE USE ONLY ^ C FpE PAID S ^ H 2 ^ N DATE^ SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR vC)/1 WELLSEALWITNESSED YES □ NO □ BY. WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAY STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL; EHS@CO.SLO.CA.US SCALE: Ya" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECT TO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LI NES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE UBELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. VAlLEY(Eat Environmental Heaitt) Services Division Public Health Department Health Agency Hw ^ RtfsrcKC Oriiy T>tt C AtrAr ct 6yi Utf 4oea nd a$suim _ _ _ MUftfv «ir Mirages (»us«SDv «n9s 9 rigmAhnrDw«Ta% Locaionvdntaricn d hnl. •dead •^•031hat »<• sttf »(• an) r«i«M 1 1200 or I iOOfttt Mcoaorufea sttnen hveorv ir gny. sre apprDiirnatt VM tfriw 10 MAcauihonva kocm d rxvood mm nan itmm lo da ■"■■*■■■■ or any of n* taping lomt edhn • 2D0 faai roPea: pfBpalir Pm Monsits mIp MM or ima ceuit**; oranopoaaiam: iD«a watt; aid pva« mmso dPCMol ttatmm. tntfatmOomrmwa tot ofM poitrna aotfCM tf poiidton wd natvMaiofi PaicMd tn a«a aaidad ant ay ass athMan •« aaiaUBd M a «■» pethPai oi cDdaaiHiPB. Pdud* dbmslom. aa pcpoM nad «■«» *dl u dugnaod mk j B^gnd MwywH ««t pMed *wai «M.- OnPop «ad nd cwiiiiMif talilM« vdicMfl is vdiMd. 0 2/1 ^2C22 DirGCtionS to sit6! Merge onto US-101 N, Take exit 201 for CA-227/Madonna Rd, Turn left onto CA-227 N/Madonna Rd Coordinates: B-11 35.264866 N. 120.675394 W; B-12 35.265250 N, 120,674857 W; B-13 35.267160 N, 120.672144 W; B-14 35.267996 N, 120.671070 W Gate code(s) and survey contact information:. WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAV STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS@CO.SLO.CA.US SCALE: %" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECT TO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE," DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. s S' 1 5^ii ' CElQlDaESO? p VACLE^lEdna .. 'ft 9-13> Gacowe ^ a \L. Environmental Health Services Division Public Health Department Health Agency H<et)rRtf6ra«>ce^,JV0S«Onir ofeanLusOO«Doeoe&nK»s«iAn» . . fa an* oamagH csuMd Br •"«« cr orisMrta nM and rrakcsmwsrrar'r UOC«>on$. areas n cooronaei of oir kge. «iDr»«set irT0i«a tM bom a«t« or* acturoyHfoWB srown nerori e ary. Vt 9p(ux^aie WfeB drilir to nflvalaiho wmO hM auwt ti piofottd mtU win r«iv«( M IM oMoiwca W ww at vcnn • 2DD foot iidiut: proaarv OMiwits; mm mIm or couim drdoagi pmrnn; totfa oMOing ■— piMa MMit M|nM S)«>«a*, «»fM oufearaand wv oOier powsiUH sotrao ttf anBoflpn •nd ecni«wineai tdwitfM In siS» siandarfl ss and aiv w w0i Uvan or imeo<Hd tcil or pauion ec oartvnnWBi. acaift fl oimlom. an eropoad tan Oidl bo da^naidd odtft a fl aeeod M^vyor'o AM IMod A* Ml Ml cownce dodlMs voictfoais worod. 02/15/2022 Directions to site: 0"to US-IOI N, Take exit 201 far CA-227/Madonna Rd, Turn left onto CA-227 N/Madonna Rd Coordinates; 8-11 35.264866 N. 120.675394 W; 8-12 35.265250 N, 120,674857 W; B-13 35.267160 N. 120,672144 W; 8-14 35.267996 N, 120.671070 W Gate code(s} and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael H'lW Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor; GREGG DRILLING Permit ID: WP1027336 Permit#: 2022_019 Permit Expiration Date: \ O —^ APN#: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 j {P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael HWl Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID WP1027336 Permit#: 2022.019 Permit Expiration Date: \ O — \ ~ SIGNALHILL.CA 90755 ^PN #: GREGG DRILLING 2726 WALNUT AVENUE The referenced permit Is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soli Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B j San Luis Obispo, CA 93401 | (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borensteln. MD, MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address: MADONNA ROAD, SAN LUIS OBISPO Permit Number: 2022.019 WP: WP1027336 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on . As requiredunder Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologist or Well Consultant Name Registration number Signature Date County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B i San Luis Obispo, CA 93401 i (P) 805-781-5544 i (F) 805-781-4211 www.slopubiichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra Way STE. B, San Luis Obispo, CA 93401 PO Box 1489. Son Luis Obispo, CA 93406 Phone: (SOS) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLS ^ OFFICE USE Permit No. p O ■, 0 Submittal Complete □ Date,wp No. ^ O f n 5^ ^ invoice No.. Scanned / SITE INFORMATION Proposed Well Site Address intersection of Miguera street and Bridge Street q|- Area Obispo Assessor's Parcel Number ngtit-of-way Site served by a water company, agency or district? D No □ Yes GPS35.267699 fyj ^20670339 w Coastal Zone?*^0 WaterCo. WELL OWNER INFORMATION I Well Owner city of San Luis Obispo ^Telephone Number 605-781-7215 PROPERTY OWNER INFORMATION Property Owner Name Luis Obispo Mailing Address 879 Morro Street GKy San Luis Obispo Zip 93401-2710 Telephone Number (805}76i-72i5 Email ntGague@siocity.org WELL CONSULTANT INFORMATION Consultant ComDanv Water Systems Consulting Teieohone Number 805-215-0764 Consultant Name Joshua Reynolds Email jreynoldsSwsc-lnc.com 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD a Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction □ Electric 2 50' □ Cathodic Protection a 50' □ Soil Testing 2 25' □ Sparging 2 25' (Permit required for listed depth or encountering groundwater) I I Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool m Other CPT N/A .Proposed Length of Work ^ *^^7^Proposed Depth 6Q ft Casing Diameter'' '6 in Annular Seal Depth Seal Material. Agency requiring monitoring well implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name snan saveia C-57 License No. Drilling Company Name Gregg Drilling. LLC .Telephone Number 562-427-6899 Mailing Address 2726 Walnut Ave., Signal Hill, CA 90755 Fax (562)424-2329 Email Address I hereby agree to comply with all applicable laws and regulations of the County of San Luis Obispo and the State of California pertaining to well construction, destruction, repairer modification. Within sixty days after completion of the well. I will furnish Environmental Health Services with a well completion report. This application becomes a valid permit following sign off by Environmenla! Health Services. 0RILUN6 SHAU. NOT COhitMENCE UNTIL THIS APPUCATION IS APPROVED (EHS requires 48 hour notice before completion of work) Contractor Signature Brian Saveia Contractor Printed Name Saveia Date 02-23-2022 RECEIVED BY, WELL SITE APPROVED: YEsW NOD BY WELL SITE APPROVAL GPS cArDINATES PERMIT Miration date. SPECIAL REQUIREMENTS FOR DRILLING CONTRAaOR FOR OFFICE USE ONLY X S" FEEPAIDS \ 3 4 S V T" \C)/ I WELLSEALWITNESSED YES □ NO □ BY. WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAY STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS@CO.SLO.CA.US SCALE: K" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPEaTO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FUGGED SURVEYOR'S STAKE UBELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED, C3B CD LUIS oe~r^ yctta4V«nwi»«" Environmental Health Services Division Public Health Department Health Agency H8plwRtf«mtPtfPOS«sOr« Cojntrof SenLUSCD^OOatMSAtllKSUmt <00o»1 nc - 00 _ hatNMrfwiy e»m«9e9C9U59<3Crr emrs 9 cmmtrss in and nowvrny LocSiond, aiuancn, seas 9^ cOffWiaes or vtv xjTtf. moitaotirxifG thai ^ese eata ara «cva» «t9r»uc* itomn hereof tf any, are Ytt» ttllv 10 mauathnmcf mM tmt r»««cs to Dw MfiMa cf any of (M faionafai narni •tfhli a 306 foef iMoc proptfly Ifiesr aaaanoma; aaw botfiea or wata couravs diflnag* ptfan: re«s oMSlna wSI*; aonafa aed pfivd* M*aB* diapesol aytians. ardnri and dry omaf poimtM tour cat cd polidiQfi mwl tBHjm^an idantdM in Kd« 9m9md ftc and aw afw MDi hflMm or napadad acai a nalaf pellJian or (Brtamrtauon. aiduda dimamMnb Ml pcodoaad wad tdot didl da daalgnaiod adDi a llicdad amwor'i dafca labatad twi ado.* Dndng shal nM citdidncd urdU tMo ^McadiDh IS MOML ^2/] ^'2022 Diractions to site: ^^ergeonto US-101 N, Take exit 201 forCA-227/Madonna Rd, Turn right onto Higuera St, Turn left onto Bridge St Coordinates: B-15 35.267699 N. 120.670339 W; B-16 35.267558 N. 120.669605 W Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID WP1027337 Permit#: 2022_020 Permit Expiration Date: \0 Q.'X. APN#: The referenced permit is approved provided the following Items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of Installation In accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction In accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure In accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material Inspector at 805-781-5544. County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borensteln, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING GREGG DRILLING 2726 WALNUT AVENUE Permit#: 2022_020Permit Expiration Date: \ Q—\— SIGNAL HILL, CA 90755 ^PN #: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction In accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material Inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B ] San Luis Obispo, CA 93401 1 (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address: HIGUERA AND BRIDGE STREET, SAN LUIS OBISPO Permit Number: 2022.020 WP: WP1027337 APN: Select: □ Monitoring Well installation □ Monitoring Weil Closure □ Soil Boring The referenced work was completed on... As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty {60) days for monitoring wells. Geologist, Hydrologist or Weil Consultant Name Registration number Signature Date County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suites j San Luis Obispo, CA 93401 j (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra WaySTE. B, San Luis Obispo, CA 93401 PO Box 1489, San Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLS 3 City or Area Obispo Site served by a water company, agency or district? □ No □ Yes Water Co. Name cityofsaaLuisObispo Proposed Well Site Address Adjacent to Highway 101 On-Ramp Assessor's Parcel Number CaiTrans ri ght-of-way GPS 35.263176 W Coastal Zone?M 120.674151 SITE INFORMATION WELL OWNER INFORMATION OFFICE USE Permit No. J fy i Submittal Complete □ Date Mwpno.Uj?\ 0a7336 Invoice No. \ Scanned / / .Telephone Number QQ5-781-7215 PROPERTY OWNER INFORMATION Property Owner Name Obispo Mailing Address 879 Morro Street Gity San Luis Obispo Zip 93401-2710 Telephone Numberjf^fllflf^Email nteague@sloclty.org WELL CONSULTANT INFORMATION Consultant ComDanv^s^®' Systems Consulting Teleohone Number ®°5"2''5-0764 Consultant Name Joshua Reynolds Email j''eynolds@wsc-inc.com 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction □ Electric & SO' □ Cathodic Protection 2 50' □ Soil Testing 2 25' □ Sparging 2 25' (Permit required for listed depth or encountering groundwater] I I Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool rn Other CPT Proposed Depth Casing Diameter 1 Annular Seal Depth N/A seal Material .Proposed Length of Work3^^^ Agency requiring monitoring well implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling followed by back-ftlling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name Brian Saveia C-57 License No. 10^456 Drilling Company Name Gregg Drilling, LLC .Telephone Number 562-427-6699 Mailing Address 7.726 Walnut Ave., Signal Hill, CA 90755 Fax (562)424-2329 Email Address t)savelae9re9gdrill.n9.com I hereby agree to comply with all applicable laws and regulations of the County of San Luis Obispo and the State of California pertaining to wellconstruction, destruction, repair or modification. Within sixty days after completion of the well. I will furnish Environmental Health Services with a well completion report. This application becomes a valid permit following sign off by Environmental Health Services. ORilUNS SKAU NOT COMMENCE UNTIL THIS APPUCAT10N IS APPROVED |EHS requires U hour notice before compleDon of work) Contractor Signature Brian Saveia Contractor Printed Name Saveia Oate 02-23-2022 WELL SITE APPROVED WELL SITE APPROVAL FOR OFFICE USE ONLY X >i.FEE PAID S 61^7"" CK/dS ky/ VJ DATE. PERMIT EXPIRATION DATE. SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR \o/|/ o-v"W WELL SEAL WITNESSED YES □ NO □ BY. WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAV STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL; EHS@CO.SLO.CA.US SCALE: %" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECT TO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE UBELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. oeisfio \i Environments HeSth Services Division Public HeSth Department Health Agency Hive CMC© 1 i?COor I Heltrfoi b* insnev L0C*M3ns, areas arc CMnWaCes of arrr h:n0, •ettt*c* iriM «w vt tituim WUM stoivn hereoo. i Bny. are approximate iiocjuen 01 MoebeM MniMvadta r d «fiy of me follewme Bems MUin • 7VI taot rediuc ms; aK«nenl>: bod<e« or wei« cwraes ««nege panem; rods eMiOi^ wdtK emeeie cni pifYtfe Wrtge OnvoMf lyflerrs. tntttt 9ido*iees ano mv other aotsiiw eeiecM ttf poiynon mnfrandon MaitBied (n nae aid wnt aeet viih faitam or su^eoed »al or mela pollution o< coidanntfivi. hcfefdo tfirMone. All ^opooM ma tio mm m dMpneied «em j n^jped etfvoyws me ueiued *wil ete." Dniii^ ehai not cwiiiiutce uniii ddempialniiievpimred. Q2/t 1/2072 Directions to site: Merge onto US-101 N, Take exit 201 forCA-227/Madonna Rd, Turn left onto CA-227 N/Madonna Rd, Turn left onto the US-101 S ramp Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael HWl Health Agency Director Penny Borenstein, MD. MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID WP1027338 Permit#: 2022_021 Permit Expiration Date: 10/01/2022 APN#: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781 -5544. County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B j San Luis Obispo, CA 93401 1 (P) 805-781-5544 1 (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael HiW Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor; GREGG DRILLING GREGG DRILLING I? 2726 WALNUT AVENUE ,,,,,,2022 SIGNAL HILL, CA 90755 #■ The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation In accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address: HIGHWAY 101 ON RAMP, SAN LUIS OBISPO Permit Number: 2022_021 WP: WP1027338 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on . As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologist or Well Consultant Name Registration number Signature Date County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suites j San Luis Obispo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.slopublicheaith.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2756 Sierra WaySTE. B. San Luis Obispo, CA 93401 PO Box 1489, San Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs(§>co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLS 9 OFFICE USE Permit No. Submittal Complete □ Date_ Invoice No. \ ^ C 7 Scanned / / SITE INFORMATION Proposed Well Site Address Mercado Street City or Area San Luis Obispo Assessor's Parcel Number street ri ght-of-way GPS 35.261600 N 120.677292 WELL OWNER INFORMATION I Well Owner city of San Luis Obispo Site served by a water company, agency or district? □ No □ Yes W Coastal lone?^ Water Co. I .Telephone Number 905-781-7215 Property Owner Name Obispo Mailing Address 879 Morro street Telephone Number 7ai-72i5 Gjty San Luis Obispo Email nteague@slodty.org 93401-2710 PROPERTY OWNER INFORMATION WELL CONSULTANT INFORMATION Consultant Company Water Systems Consulting .Telephone Number 805-215-0764 Consultant Name Joshua Reynolds Email jreynolds@wsc-inc.com WELL TYPE 51 Construchon □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction PURPOSE OF WELL □ Electric 5 50' □ Cathodic Protection 2 50' □ Soil Testing 2 25' □ Sparging 2 25' (Permit required for listed depth or encountering groundwater) DRILLING METHOD I I Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool rn Other CPT N/A .Proposed Length of Work 9 daysProposed Depth Casing Diameter ^ 9 in Annular Seal Deoth Seal Material. Agency requiring monitoring well implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name Brian saveia C-57 License No. 1044456 Drilling Company Name Gregg Drilling. LLC .Teiephone Number 562-427-6699 Mailing Address ^^^9 Walnut Ave., Signal Hill, CA 90755 Fax (562)424-2329 Email Address bsavelaggreggdrilling.com I hereby agree Co comply with all applicable laws and regulations of the County of San Luis Obispo and the State of California pertaining to well construction, destruction, repairer modification. Within sixty days after completion of tho well, I will furnish Environmental Health Services with a well completion report .This application becomes a valid permit following sigrt off by Environmental Health Services. 0RILUN6 SHALL NOT COMMENCE UNTIL THIS APPUCAT10N IS APPROVED {ENS requires 48 hour notice before completion of work) OlgMslry ijgnM Srun SevetaC D 02ontractor Signature Brian Saveia ont"?onm.!itii4ii3JtfKr Contractor Printed Name Brian Saveia ate -23-2022 RECEIVED BY WELL SITE APPROVED: YES 0 NOD WELL SITE APPROVAL GPS COORDIN/^ PERtvfrr EXPIRATION DATE. SPECIAL REQUIREMENTS FOR DRILLING CONTRAaOR FOROFTOUSEONLY ^^<5^ ^ f w WELLSEALWITNE55ED YES □ NO □ BY. WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAY STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805}781-5544, FAX (805)781-4211 EMAIL: EHS(S)CO.SLO.CA.US SCALE: )4" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECT TO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS; PROPERTY LI NES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. w 'sSn utisidBWPbXJC3*.^.. VALLEYiSili.a""^ ' S " 'VjlleyiaVB V v -e.) «:Lr.*.v of sw G3CbD£2?' Environmental Health Services Division Public Health Department Health Agency MXOOf 1 in<n» 100 feet HsftlerRtfmnt* PifMSM OrV ef SshLusOMfroewsriolbiSHmt . tetlft IV aimjQfs< br emrs v crt'.v<vit n m ««amr l.oc«>Qns. diSTves. aeas and cocrdmaes or «r*y k»i. V vraiieo :M Tim a«i V* vcwtt «< rMuta Vomfi hcreorx 4 any, sffi appQAlmsie ViM <iiiw to oicfeatoOMtMimafi« piepootf to««:(to IM MOUfiea aiv of Cho tOMrq aom* a no foot Muk propaiy toer; oKsiBnts; wtim MM Of mm rwsos Mom oaRsn; iMs MfBOd mm; mmn M prMo mimo d'MM* sysUfm. aMmtf vtdosinB and «qr dwraocahttal aoercot d MdM and ceFMsi»«iPt dsiUM Ui Ma Middtt Aa M *v mmt mh luiuwt et sossedod c«1 or MM aoUMon or oaananaain. aielydi diCMmtDn. Alt propoM M am bo ddgflMd a«B a llaaM soveyors Mte ttbeled ito.* DnRjig tftad r«l cagaimca Ml Rat volatioiiia vpiwad. 02/15/2022 Directions to site: US-101 N, take exit 201 forCA-227/Madonna Rd. Turn left onto CA-227 N/Madonna Rd. Use the left 2 lanes to turn left onto El Mercado Coordinates: B-18 35.262458 N, 120.678733 W; 8-19 35.261600 N, 120.677292 W: B-20 35.260630 fJ. 120.675855 W; B-21 35.259399 N, 120.674224 W Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael H'lW Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor; GREGG DRILLING Permit ID; WP1027339 Permit#; 2022_022 Permit Expiration Date; \ APN#; The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael HiW Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID. WP1027339 Permit#: 2022_022 Permit Expiration Date: SIGNAL HILL, CA 90755 ^ GREGG DRILLING 2726 WALNUT AVENUE The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address: EL MERCADO STREET. SAN LUIS OBISPO Permit Number: 2022_022 WP: WP1027339 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on . As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologist or Well Consultant Name Registration number Signature Date County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B j SanLuis Obispo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.slopubllchealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra WaySTE. B, Son Luis Obispo, CA 93401 PO Box 1489, San Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLS ^ OFFICE USE Permit No. — O ^-3 Submittal Complete □Date 'X/ a. 1/ WP Invoicelice No, \ Scanned SITE INFORMATION Proposed Well Site Address City or Area San Luis Obispo Assessor's Parcel Number street right-of-way GPS 35.255696 ^ 120.671819 WELL OWNER INFORMATION I Well Owner Obispo Site served by a water company, agency or district? [I] No CZ]Yes W Coastal Zone?J^!£ Water Co. Name I .Telephone Number QQ5-781-7215 PROPERTY OWNER INFORMATION Property Owner Name Obispo Mailing Address 879 Mono Street San Luis Obispo Zip 93401-2710 Telephone Number 78i-72i5 Email nteague@slocity.org WELL CONSULTANT INFORMATION Consultant ComDanv Water Systems ConsulUng Teleohone Number 805-215-0764 Consultant Name J°shua Reynolds Email iraynolds@wsc-inc.com 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD [1 Construction □ Repair/Modify □ Monitoring □ Test Weil □ Vapor Extraction □ Electric 2 50' □ Cathodic Protection > 50' □ Soil Testing 2 25' □ Sparging 2 25' (Permit required for listed depth or encountering groundwater) □ Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool m Other CPT Proposed Depth Casing Diameter Annular Seal Depth Seal Material .Proposed Length of Work Agency requiring monitoring well implementation, and/or reason for monitoring well: Boririgs for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surtece WELL DRILLER INFORMATION Drilling Contractor Name Bnan saveia C-57 License No.''0^'*56 Drilling Company Name Gregg Drilling, LLC .Telephone Number 562-427-6899 Mailing Address ^726 Walnut Ave,. Signal Hilli CA 90755 Fax (562)424-2329 Email Address bsavei8@gre99dni1ing.com I hereby agree to corrplv with sllapcllcable lewt and regulations ofthe County of San Luis Obispo and the State of California pertaining towel! construction, destruction, repair or modification. Whhin sixty days after completion of the well, I will furnish Environmental Health Services with a well completion report .This application becomes a valid permit following sign off tiy Environmental Health Services. ORILUNG SHALL NOT COMMENCE UNTIL THIS APPUCATION IS APPROVED (EHS requires 48 hour notice before completion of work) Contractor Signature Brian Saveia Contractor Printed Name3l!i£!LEf!^fif-Date 02-23-2022 FOR OFFICE USE ONLY RECEIVED BY DATEWELL SITE APPROVED: YES^ NOD i WELL SITE APPROVAL GPS COORDINATES''// PERMiy«PIRATION DATE EE PAID S 3 - CK/CcJ DATE ^ SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR \oi I h^~ WELL SEAL WITNESSED YES □ NO □ BY. WELLSEALGPSCOORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAY STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS@CO.SLO.CA.US SCALE: y*" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECT TO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LI NES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. smmm LuIb Obispo '"^T^Jsan.uuis GIKEDGao;^ Environmental Health Services Division Public Health Department Health Agency HsDWPtfrcnct PiAom 0^ th« Co^rtr 9f us ofrt^o co$s not otojn Mte r« arTr4»rr^icaui*^»r0"ep« er <m$sais>nir>«ijj|a an9 ns wsnvQr 11200 or 1 nen* 100 feet iocsiorss. aisancet. vesi coorocMn itwn hseon. any, ere •ppQifrste Ml ilrillv l9 location of 91opoced mB MhiowodU Uw MUorca M any or uw rrtMna flamo ««nin a ZD foot imaiM properly »i«t; attonofta; Mtar bod lot or wota ewrvec dr«nao» pam; reds daifio wirila; ■wars and pivaa aawojo dnoiNa aytfaiD. entml Dtdimiras ana any other potential siiiiren pcdiaioA end ccfituwon idfntAed in am aendartf and any «•■ arSt toPM or suipected soil or pefaDon or iBiilvnnaUDR. lachi*dmndoiB. lU tneoma «oe tfea tfiifl be deeaeneiod Mdi a fl aopod cmdyon fl afes Itteted "waH sic.' oruboa tnii net coffsi»nce uMiMe appicafllonia apprevad. pi/15/2022 Directions to site; us-101 N, Take exit 200B for Prado Rd/Elks Ln, Turn right onto Pradc Rd Coordinates: e-22 35.256509 N. 120.673557 W; B-23 35.255696 N, 120.671819 W; B-24 35.255200 N, 120.670619 W Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael HiW Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application [nformation Drilling Contractor: GREGG DRILLING Permit ID WP1027340 Permit#: 2022_023 Permit Expiration Date: \ APN#: The referenced permit Is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 [ (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING GREGG DRILLING WP1027340 2726 WALNUT AVENUE p' x ^Permit Expiration Date: \ C? —\ ^ "V. SIGNALHILUCA 90755 The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Welt Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suites j San Luis Obispo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.siopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director Property Owner; CITY OF SAN LUIS OBISPO Property Address: PRADO ROAD, SAN LUIS OBISPO Permit Number: 2022_023 WP: WP1027340 APN: Select: □ Monitoring Well Installation □ Monitoring Weil Closure □ Soil Boring The referenced work was completed on.As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologist or Well Consultant Name Registration number Signature Date County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B j San Luis Oblspo, CA 93401 | (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION ^^^|S33k|^ 2 756 Sierra Way STE. B, Son Luis Obispo, CA 9340 7 PO Box 1489, San Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLS ^ City or Area Obispo Site served by a water company, agency or district? D No Qves Water Co. Name Proposed Well Site Address San Luis Ranch • Parkview Place Assessor's Parcel Number right-of-way GPS 35.257113 N 120.681447 W Coastal Zone? SITE INFORMATION WELL OWNER INFORMATION Permit No.. Submitt^l Complete □ wpNo. y \ OQ.'^ \ invoice No. Scanned / / OFFICE USE 0"a.M .Telephone Number 805-781-7215 PROPERTY OWNER INFORMATION Property Owner Name San Luis Obispo Mailing Address 879 Morro street Gity San Luis Obispo Zip 93401-2710 Telephone Number 78i-72i5 Email nteague@slocity.org WELL CONSULTANT INFORMATION Consultant ComDanv Water Systems Consulting Teleohone Number 605-215-0764 1 Consultant Name Joshua Reynolds Email jreynolds@wsc-inc.com | i 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD Construction □ Repair/Modify □ Monitoring I I Test Weil □ Vapor Extraction □ Electric a 50' □ Cathodic Protection a 50' □ Soil Testing a 25' □ Sparging > 25' (Permit required for listed depth or encountering groundwater) □ Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool I I other Sonic Proposed DepthJ£2JL_Casing Diameter Annular Seal Depth Seal Material .Proposed Length of Work Agency requiring monitoring well implementation, and/or reason for monitoring well: Bod^gs for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name Bnan saveia C-57 License No. ■'044456 Drilling Company Name Gregg Drilling, LLC .Telephone Number 562-427-6899 Mailing Address Walnut Ave., Signal Hill. CA 90755 Fax (562) 424-2329 Email Address bMwias^driiiing^ I hereby agree to comply with all applicable laws and regulations of the County of San Luis Obispo and the State of California pertaining to well construction, destruction, repair or modification. Vtnthinsixty days after completion of the well. I will furnish Snvrronmental Health Services with a well completion report .This application becomes a valid permit following sign off by Environmental Health Services. DRIIUN6 SHAU HOT COMMENCE UNTIL THIS APPUCAT10N IS APPROVED (EHS requires 48 hournotice before completion of worh) Oigit«ey **9'^ by 6n*n S«v*iiC Dontractor Signature Brian Saveia SL w7?07°?i'wi9^T)cr Contractor Printed Name Brian Sacela ate 02-23-2022 RECEIVED BY WELL SITE APPROVED WELL SITE APPROVAL : YEsiJ GPS d00RDINATES7 FOR OFFICE USE ONLY FEE PAID S — C DATE PERMTT EXPIRATION DATE. SPECIAL REQUIREMENTS FOR DRILLING CONTRAaOR w WELL SEAL WITNESSED YES □ NO □ BY. WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAV STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS@CO.SLO.CA.US SCALE: K" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECTTOTHE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES. EASEMENTS. UNDERGROUND STORAGE TANK SYSTEMS. WATER BODIES OR WATER COURSES. DRAINAGE PATTERN. ROADS, EXISTING WELLS. SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS. ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. W- ifTD o&iSpavAUiJEYiE-»>j pas'ias-ossroMSaSoM Environmental Health Services Division Public Health Department Health Agency KaerDtRtfsrsncsPirposssOnV Tbi CourtV of SsnLu« Ot>9orasnotsssunie M200 OP 1 incfi-lOOTeel Ovwv iBolir Par ant damaQtscausad try errae 9 omesJats m ma d<a ano rrakes FOwsrrantr LOC9tori$. dlsiances, areas 7)0 cocroinses Hip ofsnr idrd, eipross orlrrOied tPat irtaso data ara aecurato and rebabta. snown nerecn, ff arr/. dPe apprOKimate VtH ditia 10 IndKateihe MC1 locadon cf propOMd wet Mill respectlo the oMleKe of arv of IM fdlfiMng Hems ««ihVi s 2D0 fool nduK ptopsfy lf>K eienents; iiurei bodws oi vMf« coureve; dranepe pettcm: niaOc rdsing wdls: so««ts end prWtfe dKveeai s)9l«ms, an mat pidosuiee ant any other potanW sourcee of poiudon tir\i cenlarintitOA UerliTM in ettte aandtrd && and any arast «H(h kruMm or suaoacted soli or wiv pnthjoi*) or coitandittfiM. MOude dimcrrenne. All proposed ncd etes diall be dcsignaicd nHD e RaQoed durvoyor's a«h»lM«led -wdl sle." Dnang snel not camanee undl OKI Mcallen Isvprwed. QJ/i 5/2022 DirSCtionS to site: US-IOI N, Take exit 200A for Los Osos Valley Rd, Turn left onto Los Osos Valley Rd, Turn right onto Froom Ranch Way, At the traffic circle, take the 2nd exit Continue onto Heirloom PI, Turn left onto Legacy Ln, Turn right onto Parkview PI. Coordinates: B-25 35.257113 N, 120.681447 W Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borensteln, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID: WP1027341 Permit#: 2022_024 Permit Expiration Date: 10/01/2022 APN #: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction In accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure In accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B j San Luis Obispo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealthorg/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING GREGG DRILLING 2726 WALNUT AVENUE in/ni/->n->->Permit Expiration Date; 10/01/2022 SIGNAL HILL, CA 90755 #. The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 1 (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address; PARKVIEW PLACE, SAN LUIS OBISPO Permit Number: 2022_024 WP: WP1027341 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on . As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologist or Well Consultant Name Registration number Signature Date County of San Luis Obfspo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra WaySTE. B, San Luis Obispo, CA 93401 PO Box 1489, San Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLS ^ Proposed Well Site Address San Luis Obispo Coips Yard City or Area San Luis Obispo Site served by a water company, agency or district? □ No Yes Water Co. Assessor's Parcel Number,253-05i-0^ GPS 35.253649 N 120.675604 W Coastal Zone? SITE INFORMATION WELL OWNER INFORMATION OFFICE USE a o»,7^~n^<r Submittal Complete □ Date wpNO- Invoice No. Scanned / / Permit No. I Well Owner Obispo .Telephone NumberJ^^lIilllEIL PROPERTY OWNER INFORMATION Property Owner Name Obispo Mailing Address 879 Morro Street City San Luis Obispo Zip 93401-2710 Telephone Numberjf^f^^f^;^^Email riteague@slociiy.org WELL CONSULTANT INFORMATION Consultant Comoanv Water Systems Consulting Telephone Number 805-215-0764 Consultant Name Joshua Reynolds Email jreynolds@wsc-inc.com I WELL TYPE PURPOSE OF WELL DRILLING METHOD Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction □ Electric 2 50' □ Cathodic Protection 5 50' □ Soil Testing 2 25' □ Sparging 2 25' (Permit required for listed depth or encountering groundwater) rn Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool n other Sonic Proposed Depth Casing Diameter ^'5/8° Annular Seal Depth Seal Material .Proposed Length of Work ^ Agency requiring monitoring well implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name Bnan saveia C-57 License No. 1044456 Drilling Company Name Gregg Drilling, LLC .Telephone Number 562-427-6899 Mailing Address 7.72Q Walnut Ave., Signal Hill, CA 90755 Fax (562)424-2329 Email Address bMveia@gra9gdriiiing.00m I hereby agree to comply with allapplccable lawsartd regulations of the County of San Luis Obispo and the State of California pertaining to well construction, destruction, repair or modification. Within sixty days after completion of the well. I will furnish Environmental Health Services with a well completion report .This application becomes a valid permit following sign off by Environmental Health Services. DRIUING SHALL NOT COMMENCE UNTIL THIS APPUCAT10N 15 APPROVED (EHS requires 48 hour notice before completlen of worh) Contractor Signature Brian Savela ^i.?o»er.??os;tnacn''oo- Contractor Printed Name Brian Saveia Date 02-23-2022 RECEIVEt^BY DATEWELL SITE APPROVED; YEsjtf NOD BY,^ WELL SITE APPROVAL GPS dOORDINA^^ES, PERMI^XPIRATION DATE SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR ^ FOR OFFICE USE ONLY ^ \ 0/\ WELL SEAL WITNESSED YES □ NO □ BY_ WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAY STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS@CO.SLO.CA.US SCALE: Ya" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECT TO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. £<lrv> % orui«r <n in(iic4t*me px»a loc^non <il proposM ma aih fottmd me Aosunce of cny of im MioMna Bem« Mmm a no root raduk piopoty taee: aionenta; ««■ bodva ot Mala cwms aanspa patiemi nMt Mosna wilie: eawvrt entf mk/ire eoaaaB AMpMil eysiene, anunH mdettf ee end any emcf pcnnttei scurcn cf pcamn •lae antad as and any a hnDMn D( weeded ml or vaoa pefuon or ajitarinedat. Indue* diicmlens. Ml FOpeeed aafl »■*• dial be deagniM *dUi e Roned m%ayor-a delE* tab bed "Ftfl cd*.' Dttde ccowesd urdiftNeeppecaoDA If em a«d. n 2/1 SCO 2 2 Environmental Health Services Division Public Health Department HeaKhAgency I 1x0cvl ncnc imteelMepUvRiKverKe Pupoiea Of><v TT'eCcxmh cr8enLu«009oeoafAo). .heoMi fa any darraoif cavseo by ana* a vnawPiot me dda and maPn noMtAim UKSons, distances, mess aoo COCronatesereny lod, eipreuer invnad ihat rase dau oe eteuroe enj raioM STOon ncreon. t arv. are Wpmnan Directions to site: onto US-101 N, Take exit 200B for Prado Rd/Elks Ln, Turn right onto Prado Rd. Turn right Coordinates: 6-29 35.253649 N, 120.675G04 W Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID WP1027342 Permit#: 2022_025 Permit Expiration Date: 10/01/2022 APN#: 053-051-045 The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156Slerra Way, Suite B j San Luis Obispo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING GREGG DRILLING 2726 WALNUT AVENUE n t" n t in/ni/-?n:>-?Permit Expiration Date; 10/01/2022 SIGNAL HILL, CA 90755 ^PN #: 053-051-045 The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B [ San Luis Obispo, CA 93401 | (P) 805-781-5544 \ (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address: SAN LUIS OBISPO CORPS YARD, SAN LUIS OBISPO Permit Number; 2022_025 WP: WP1027342 APN: 053-051-045 Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on . As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologist or Well Consultant Name Registration number Signature Date County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 | (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra Way STE. B, Son Luis Obispo. CA 93401 PO Box 1489, Son Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLS 2 OFFICE USE Permit No.. Submittal Complete □ Date ^ ^ / ^*3-wp No. t Ot \ 0 3 W3 invoice No. Scanned f / SITE INFORMATION Proposed Well Site Address *-^"6 near South Higuera Street Assessor's Parcel Number street right-of-way GPS 35.250928 (yj 120.672202 City or Area Obispo Site served by a water company, agency or district? □ No □ Yes W Coastal Zone? No Water Co. Name WELL OWNER INFORMATION 1 Well Owner city of San Luis Obispo Teleohone Number 005-781-7215 1 PROPERTY OWNER INFORMATION 1 ProDertv Owner Name ^'ty of San Luis Obispo | Mailine Address 079 Morro Street Gitv San Luis Obispo 2iD 93401-2710 Teleohone Number 701-7215 Email nteague@slocity.org 1 1 WELL CONSULTANT INFORMATION 1 Consultant ComDanv water Systems Consulting Teleohone Number 005-215-0764 | 1 Consultant Name J°shua Reynolds 1 Email jraynolds@wsc-inc.com 1 1 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction □ Electric 2 50' □ Cathodic Protection > 50' □ Soil Testing 2 25' □ Sparging 2 25' (Permit required for listed depth or encountering groundwater) rn Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool I I Other Sonic Proposed Depth Casing Diameter ^'5/8" Annular Seal Depth Seal Material .Proposed Length of Work ^ Agency requiring monitoring well implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling followed by back-filling with cement/bentonlte from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name BrtanSaveia C-57 License No. 1044456 Drilling Company Name Gregg Drilling, LLC .Telephone Number 562-427-6899 Mailing Address 2726 Walnut Ave., Signal Hill. CA 90755 Fax (562)424-2329 Email Address bMv9ia@9re99cifiiiing.com I herebv agree to comply with ail applicable laws and regulations of the County of San Luis Obispo and the State of California pertaining to well construction, destruction, repair or modification. Within sixty days after completion of the well, I will furnish Environmental Health Services with a well completion report. This application becomes a valid permit following sign of! by Environmental Health Services. DRILUN6 SHALL NOT COMMENCE UNTIL miS APPUCATION IS APPROVED (EMS requires 48 hour notice before completion of workl Contractor Signature Brian Savela Contractor Printed Name Savela Date 02-23-2022 RECEI\^MY WELL SITE APPROVED: YESja NOD WELL SITE APPROVAL GPS (foORDIN PERMIT EXPIRATION DATE SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR SE ONLY 5 \0 J \j w WELLSEALWITNESSED YES □ NOD BY. WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAV STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS@CO.SLO,CA.US SCALE: /4" = 25' INDICATE BELOW THE EXAa LOCATION OF PROPOSED WELL WITH RESPECT TO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE UBELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. J k.'. , -Z f > n n n ■> CO Environmental Health Services Division Public Health Department Health Agency \ i?00 9ri tnchs lOOfeetUa&lof T^tCOJr4lO(S»Lu6 0b9e(M•sr>«»8Sumt . MtMr la »r evnaoescsi^stiv encna cmidcr^mtris do MtnaiiMadw*rmr LocStons.aisurKes, veas 3V cocjwiaeaefsiy KfO «p«u e« btQ'M tiw Pim e«tA Ar« accif» vxi rsisM rtcreOTi. i Vrf. 9ft appioxbnatd VM drila le ndiesuoid met tocsoon of p(cao*ea tidn 'siasci (a t&a ■oWocs ct wff of Hw lotio—no dsms Mntn • ?O0 looi fddlus: pnv«fV 9nm; wtaients; im bodwt or m«i« conrsoc aranooa Mtidm; nsflt Mnng mmit tnt h>«i9b ditpml OMBira, Bfilral atdoftmo and any othnt aetmOal soikim of poflutlBn and mnlBiwiidion idntfied in rttft aandad a« and any aan tnUi loioawi 04 BUBpaaM sal a ««)v pcfhiUon 04 lanlarnnafnn. Incfudo tfffMldna. igi moiad mM mm tfvdi b« doMiuiad Miri a fl aooad wayara aiakd ww -vfoii eta." ooHv sMt iM catmmc* «imh ay<«HciUf<l<9«(a^- Oa/'G-'iOiJ Directions to site: US-IOI N, Take exit 2OOB for Prado Rd/Elks Ln, Turn right onto Prado Rd. Turn right onto S Higuera St, Turn right onto Zaca lji Coordinates: B-31 35.250528 N, 120.672202 W Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael HtW Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID WP1027343 Permit#: 2022_026 Permit Expiration Date: 10/01/2022 APN #: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation In accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the projea. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your distria hazardous material inspector at 805-781-5544. County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suites 1 San Luis Oblspo, CA 93401 | (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING GREGG DRILLING 2y26WALNUT AVENUE ,0/01/2022 SIGNAL HILL, CA 90755 The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the projea. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781 -5544. County of San Luis Oblspo Environmental Health Services Division 2156Sierra Way, Suite B | San Luis Obispo, CA 93401 [ (P) 805-781-5544 [ (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUiS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Healdi Aqcncy Director Penny Borenstein. MD, MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address: ZACA LANE, SAN LUIS OBISPO Permit Number: 2022_026 WP: WP1027343 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on.As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, HydrologistorWell Consultant Name Registration number Signature Date County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopubiichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra WaySTE. B, Son Luis Obispo, CA 93401 PO Box 1489, San Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLS ^ City or Area San Luis Obispo Site served by a water company, agency or district? □ No El Yes Water Co. Name Proposed Well Site Address ^^7 Assessor's Parcel Number street right-of-way |yj 120.683530 W Coastal Zone?QpS 35.250798 SITE INFORMATION WELL OWNER INFORMATION OFFICE USE Permit No. ^ fS'3^^—(^3 '~? Submittal Complete □ Date / 5L H / ttL.X WP NO. Invoice No._ Scanned / / _Telephone Number 805-781-7215 Property Owner Name Obispo Mailing Address 879 Morro street Telephone Number 78i-72is 93401-2710City San Luis Obispo Email nteague@slocaty.org Consultant Company Water Systems Consulting Consultant Name Joshua Reynolds Telephone Number 805-215-0764 Email Jreyno1ds@wsc-inc.com □ Electrics 50' □ Cathodic Protection 2 50' □ Soil Testing 2 25' □ Sparging 2 25' (Permit required for listed deptK or encountering groundwater) □ Cable Tool I I Other Sonic Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor E>ctraction □ Rotary □ Reverse Rotary □ Air Rotary Proposed Depth Casing Diameter Annular Seal Depth Seal Material Agency requiring monitoring well implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface Proposed Length of Work^^^Y^ PROPERTY OWNER INFORMATION WELL CONSULTANT INFORMATION WELL DRILLER INFORMATION WELL TYPE PURPOSE OF WELL DRILLING METHOD Drilling Contractor Name C-57 License No. "'044456 Drilling Company Name Gregg Drilling. LLC .Telephone Number 562-427-6899 Mailing Address 7212^ Walnut Ave., Signal Hill, CA 90755 Fax (562)424-2329 Email Address '"a^'aQgrefladraiino.com I hereby agree to complvwrth all applicable laws and regulations of IheCounty of San luls Obispo and the State of California pertaining to well construction, destruction, repairer modlflcaClon. WKhIn surty days after completion of the well, I will furnish Environmental Health Services with a well completion report. This application becomes a valid pennit following sign off by Environmental Health Services. DRILUNG SHALL NOT COMMENCE UNTIL THIS APPUCATION IS APPROVED (EHS requires 48 hour notice before completion of work|D^.uiyii9nMD,Brians>v.ia _ D,;.,.. Date 02-23-2022Contractor Signature Brian Savela uosw Contractor Printed Name 6rian Savela WELL SITE APPROVED: YESE FOR OFFICE ONLY RECEIVED BY Y DATE: VE^ DATE,^^ WELL SITE APPROVAL GPSTOORDINA^'^S r/PERMh^lRATION DATE \ 0 / f / > SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR N r- w WELL SEAL WITNESSED YES □ NO □ BY_ WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA \A/AY STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS@CO.SLO.CA.US SCALE: K" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECTTO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. i-k-,. SAN LliI'. : 'I f • -X ^ '•= liEMfEBiiOj Environmental Health Services Division Public Health Department Health Agency I iSQOort inert* lOOfeetMs« rer Rer«nn<e PuTftsas Cwiir Th«Ceun« of 6ai LijaOO6e«0oesnol4Ubn« _ 196119 <9 emn 9 msMns rDwirravr l-ocaion?. disiancev veds a%a cocn^ses of any lend, mt>9u or irrv>i«d IM Vi«st cf«ti sra Kcmae* and rMM $h(7«n hcreon, tf dr>/. ar« approxkmate MM «irai« to mdvaCathe ma locaion g( ptoeoMd mi ««ti im":! io 9m poalig a mv of 9m laioeng l«ns wmhti a 700 fool radtuc; 9(0paly Bto: wenents; «a(ef bMiM or mmm raunos tftfiupa patiam; ratfs nibrq writs; mws snd pivria sav^s dnsosri syflsfm, MnH mo^mm M mtf oowr poianttri siHiras tf adoten •M eoniwiwriian idaitftod in sirit rianffvd Ac inri mm mmm iscti known or susperitd sal or wota firikHon oi Brianntton. kieluB •nrinrions. Ml propoiM woi sKm »rii M dsrienatB a nasBM stake MriM "wril sas." OOAiri iM nol conrcsic* uodi IMS vpicriBn Is moMd. q2/1 6^^022 Directions to site: Merge onto US-101 N, Take exit 200A for Los Osos Valley Rd, Turn left onto Los Osos Valley Rd, Tum right onto Auto Park Way Coordinates: B-32 35.250798 N, 120.683530 W Gate code(5) and survey contact information: COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID WP1027344 Permit#: 2022 027 Permit Expiration Date: 10/01/2022 APN #: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156Sierra Way, Suite B j San Luis Obispo, CA 93401 | (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealthorg/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID WP1027344GREGG DRILLING ^ ™ ™ 2726WALNUT AVENUE 10.01/2022 SIGNAL HILL, CA 90755 The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction In accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 j (P) 805-781-5544 ] (F) 805-781-4211 www.slopublichealth.Qrg/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director- Penny Borenstein, MD, MPH Health Officer/Public Health Director Property Owner; CITY OF SAN LUIS OBISPO Property Address: AUTO PARK WAY, SAN LUIS OBISPO Permit Number: 2022_027 WP: WP1027344 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on... As requiredunder Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologist or Well Consultant Name Registration number Signature Date County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite 8 j San Luis Obispo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.slQpubilchealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra Way STE. B, San Luis Obispo, CA 93401 PO Box 1489, Son Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OF WELLS 5 OFFICE USE Permit No. Submlttal Complete □ / AW /\ Aa.-7Date WP No. invoice No. *7 Scanned / / SITE INFORMATION City or Arss Luis ObispoProposed Well Site Address Valley Rad and South Higuera Street Assessor's Parcel Number street right-of-way Site served by a water company, agency or district? D No H Yes GPS 35.242363 ^ 120.679413 w Coastal Zone? N? Water Co. Name cityofsanLutsCbtopo WELL OWNER INFORMATION I Well Owner city of San Luis Obispo .Telephone Number Q05-78l-72is PROPERTY OWNER INFORMATION Property Owner Name Obispo Mailing Address 879 Morro Street Gity San Luis Obispo Zip 93401-2710 Telephone Numberjf^fl^i];^^^Email nteague@slocity.org WELL CONSULTANT INFORMATION Consultant ComDanv water Systems Consulting Teleohone Number ®0^"2''8-0764 Consultant Name Joshua Reynolds Email jfaynolds@wsc-inc.com 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD m Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction □ Electric > 50' □ Cathodic Protection > 50' □ Soil Testing £25' □ Sparging £ 25' (Permit required for listed depth or encountering groundwater) I I Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool rn other CPT N/A .Proposed Length of WorkProposed Depth Casing Diameter AnnularSeal Depth Seal Material. Agency requiring monitoring well implementation, and/or reason for monitoring well: Borirtgs for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name C-57 License No. ■"04^456 Drilling Company Name Gregg Drilling, LLC .Telephone Number 562-427-6899 Mailing Address "^77.^ Walnut Ave., Signal Hill, CA 90755 Fax (562)424-2329 Email Address I heretaYSgree to comply with all applicable laws and regulations of the County of San Luis Obispo and the State of California pertaining to well construction, destruction, repair or modification. Wrthlnslxly days after completion of the well, I will fumlsh Environmental Health Services with a well completion report. This appllcadon becomes a valid permit following sign off by Environmental Health Services. DRILUN6 SHALL NOT COMMENCE UNTIL THIS APPUCATtON IS APPROVED (ENS requires 48 hour nodcc before completion of work| O.SltdltY wsned Sy Brian SavotaRrian Qo\;olo Ogitaity aignao ay Brian Savata D . _ — .C D 02ontractor Signature ""dii odvuid o.ia osw Contractor Printed Name oaveia ate -23-2022 RECEIVED,BY ^ WELL SITE APPROVED: YESJE NO □ BY WELLSITEAPPROVALGPyCCBRDINATES PERiWeXPIRATION DATE SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR E USE ONLY EE PAID s .CK^trr" \ cy I I w WELLSEALWITNESSED YES □ NO □ BY. WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA SNAY STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS(S)CO.SLO.CA.US SCALE: %" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECT TO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE," DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. I -j li'jl'.!"'?* % /y, Jr- Of//'' 1- v'.-JI-viXWB iZEDEEDCOEi Environmental Health Services Division Public Health Department Health Agency 1 1200srl n;ns lOOfmUSQ lH Rtf ««n<« Pvpas«s Onir TheCMfy of San Lw«COS0«C«l$nM«Mun» MSlft f9 anr tf arcrs v vntacrs a B)« «u Jtt4 mAkn m LOCAiont. dt5t9ices. vu cocrorseft or»rtr lira, aptmor tfrfAoo irat mu vt «eur«u «"d WKoa s'Qwn hcrecfi. f ary, are appfvtmete VIM **)« Id AdieeWffiewMt locjuen of eii»poMd mM Mh ined to IM oMMiorc* D( aiy or tt« idwmeie lamc soihn • 2D0 race fsdiu*: property win: ewanentt; mcor boOtn or tnta eeunta drdMpi pflnom: tedc MaUflg *WI«: mmn and prWtfe enviB* d>«inw Mnd oidfttieBand any other poimdal catecM <d poeidion and conLarpitton Mcitdtod in atda darrfad fta aid av mma wth lovwi or saapadad tcM a ana peliuoan or centannaUun. dieaada dUnaMisna. All propend tad UM ihdl M dadOflWad A fleBVM Stftayw*! adta laPaled *nWI ma' Ofiang afnA not conviarca ladd IHa BplctfWnia Bpraval. q 2/^ 6/2022 Directions to site: US-101 N, Take exit 20OA for Los Osos Valley Rd. Turn right onto Los Osos Valley Rd Coordinates: B-33 35.242363 N, 120.679413 W; B-34 35.241530 N, 120.676851 W Gate code(s) and survey contact information: COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID: WP1027345 Permit#: 2022,028 Permit Expiration Date: 10/01/2022 APN #: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Weil Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Oblspo Environmental Health Services Division 2156Sierra Way, Suite B j San Luis Obispo, CA 93401 | (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 3/1/2022 Well Permit Application Information Drilling Contractor: GREGG DRILLING GREGG DRILLING WP1027345 -.-7-,/- ,A,A1 K.. IT Ax/rK,. .r Pefmit#; 2022.0282726 WALNUT AVENUE Permit Expiration Date: 10/01/2022 SIGNAL HILL CA 90755 The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction In accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way. Suite B | San Luis Obispo, CA 93401 j (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director Property Owner: CITY OF SAN LUIS OBISPO Property Address: LOS OSOS VALLEY ROAD, SAN LUIS OBISPO Permit Number: 2022.028 WP: WP1027345 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on . As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologist or Well Consultant Name Registration number Signature Date County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suites \ San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra WaySTE. B, San Luis Obispo, CA 93401 PO Box 1489, San Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION NUMBER OFWEL OFFICE USE Permit No Submittal Complete □ Date ^ / \'T / WP No. Invoice No. Scanned J. SITE INFORMATION Proposed Well Site Address Irttersectlon of Bridge St and Beebee St Assessor's Parcel Number street right-of-way GPS 35.267681 fg 120.667819 City or Area Luis Obispo WELL OWNER INFORMATION I Well Owner Obispo Site served by a water company, agency or district? □ No Yes W CoastalZone?J:i^ WaterCo. .Telephone Number ^05-781-7215 PROPERTY OWNER INFORMATION Property Owner Name Luis Obispo Mailing Address 879 Morro Street Glty San Luis Obispo Zip 93401-2710 Telephone Number 78i.72is Email nteague@sloclty.org WELL CONSULTANT INFORMATION Consultant ComDanv Water Systems Consulting Teleohone Number 805-215-0764 Consultant Name Joshua Reynolds Email jreynolds@wsc-inc.com WELL TYPE PURPOSE OF WELL DRILLING METHOD m Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction □ Electric S 50 □ Cathodic Protection 2 50' □ Soil Testing 2 25' □ Sparging 2 25' (permit required for listed depth or encountering groundwater) I I Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool FTj Other CPT N/A .Proposed Length of WorkJ.^5^Proposed Depth 50 ft Casing Diameter '*•5 in Annular Seal Depth Seal Material. Agency requiring monitoring well implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling foliowed by back-fiiiing with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name Brian saveia C-57 License No. 1044456 Drilling Company Name Gregg Drilling. LLC .Telephone Number 562-427-6699 Mailing Address ^^26 Walnut Ave., Signal Hill, CA 90755 Fax (562)424-2329 Email Address beavelaQgfegadriltlng.com I hereby asree to complv with all applicable laws and regulations of the County of San Luis Obispo and the State of California pertaining to well construction, destruction, repair or modification. Within siitydavtbfter completion of the well, I will furnish Environmental Health Services with a wet! completion report. This application becomes a valid permit following sign off by Environmental Health Services. □RILUNG SHAU NOT COMMENCE UNTIL THIS APPUCAT10N IS APPROVED (EHS requires 48 hour notice before completion of work) D.gi4aBy s,gnM By Biian SawuC Dontractor Signature Brian Savela Contractor Printed Name Brian Savela ate QS-16-2Q22 RECEIVED BYWELLSITE APPROVED: YEsjz NO WELL SITE APPROVAL GP§'<f00RDI PERMCPtXPIRATION DATE. SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR FOR OFFICE USE ONLY 'FEE PAID S r l Ot .V / • ":K/g) OQ^aC-O' \\ \w WELLSEALWITNESSEO YES □ NO □ BY. WELL SEAL GPS COORDINATES DATE DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAV STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHS@CO.SLO.CA.US SCALE: %" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECTTO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. 1 Environmental Health Services Division Public Health Department Health Agency MUiV mfliragisr>uMBbv iritn9 vnsMni mthMlevaradv fllftancn. 9*68$ ana roowaes orvrr hMd. aipnssofintaaj that rm 9M •ecwM vo raMM shown hsaorv if any, are appfnimate MM Miw to hdUathfl eiaa loc«on er pfoaocad i«a Mm rc«aa M Ihe Mstenc* cT any i»f rm Mwwif^ tarn ««hn a 2D0 foot radius: pfopdly mm: anwiwns; Miter mm or www cratraas; draAaoe paitarn: raoda •tdaloo wWla: mmn Md prwas sMoago disposal syflsifo. wernii wtcioMfss and any oOier poioraal eewm d peauHoA itW eanlwiwtdien tdotitted in Wn Wvelwd M any woas wtli bKMn or etepeded sai la wMw periUian or ardwnAatiai. laeluds lanwmiem. Ml prepeaed «is« *PI be deitenaisd Mdi a Mtpod •UMyWi BMio MaM bte' IHiac* etnl net cranmif mM IMS «ppic9ie*r* •prMd. 02/16/2022 Directions to SItet US*101 N to Madonna Rd in San Luis Obispo. Take exit 201 from US-101 N, Turn right onto Higuera St Turn left onto Bridge St Coordinates: 35.267681 N. 120.667819 W Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael H'lW Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 5/18/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID: WP1027429 Permit#: 2022_061 Permit Expiration Date: 11/18/2022 APN #: The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suites | San Luis Obispo, CA 93401 [ (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael HWlHeolth Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 5/18/2022 Well Permit Application Information Drilling Contractor; GREGG DRILLING GREGG DRILLING WP1027429 2726 WALNUT AVENUE t ii/iR/->n97Permit Expiration Date: 11/18/2022 SIGNAL HILL, CA 90755 ^ The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suites j San Luis Obispo, CA 93401 j (P) 805-781-5544 j (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director COMPLETION OF WORK FORM Property Owner: CITY OF SAN LUIS OBISPO Property Address: BRIDGE STREET AND BEEBEE STREET RIGHT OF WAY, SAN LUIS OBISPO Permit Number: 2022_061 WP: WP1027429 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on . As required under Section 13751 of the California Water Code, the Weii Completion Report wiii be submitted within sixty (60) days for monitoring wells. Geologist, Hydroiogist or Weil Consultant Name Registration number Signature Date County of San Luis Oblspo Environmental Health Services Division 2156 Sierra Way, Suite B j San Luis Obispo, CA 93401 [ (P) 805-781-5544 | (F) 805-781-4211 www.slopubiichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY ENVIRONMENTAL HEALTH SERVICES DIVISION 2156 Sierra Way STE. B, San Luis Obispo, CA 93401 PO Box 1489, San Luis Obispo, CA 93406 Phone: (805) 781-5544 Fax: (805) 781-4211 Email: ehs@co.slo.ca.us MONITORING WELL PERMIT APPLICATION number of weli.42_ OFFICE USE Permit No. 0 —OG?"^ Submltta! Complete □ Date Cr / ^ WP No. Invoice No. Scanned J. SITE INFORMATION Proposed Well Site Address Intersection of Froom Ranch Way and San Luis Ranch Rd city or Area San Luis Obispo Assessor's Parcel Number street right-of-way Site served by a v/ater company, agency or district? □ No □ Yes GPS 35.256667 N 120-678164 \fj Coastal Zone?_N° Water Co. Name WELL OWNER INFORMATION 1 Well Owner city of Saniuis Obispo Telechone Number 805-781-7215 | PROPERTY OWNER INFORMATION 1 Prooertv Owner Name OP'spo | Maiiine Address 879 Morro street San Luis Obispo 2iD 93401-2710 Teleohone Number (805)r8i-72i5 Email nteague@sloclty.org 1 1 WELL CONSULTANT INFORMATION 1 Consultant ComDanv Systems ConsulUng leleDhone Number 595-215-0764 1 1 Consultant Name Joshua Reynolds Email jrsynoldsSwsc-lnc.com | 1 1 WELL TYPE PURPOSE OF WELL DRILLING METHOD Construction □ Repair/Modify □ Monitoring □ Test Well □ Vapor Extraction □ Electric a 50' □ Cathodic Protection a 50' □ Soil Testing a 25' □ Sparging a 25' (Permit required for listed depth or encountering groundwater) n Rotary □ Reverse Rotary □ Air Rotary □ Cable Tool rn Other CPT Proposed Depth Casing Diameter "I Annular Seal Depth Seal Material .Proposed Length of WorkJ_^f^ Agency requiring monitoring well implementation, and/or reason for monitoring well: Borings for groundwater and soil sampling followed by back-filling with cement/bentonite from total depth to ground surface WELL DRILLER INFORMATION Drilling Contractor Name C-57 License No. Drilling Company Name Gregg Drilling. LLC .Telephone Number 562-427-6899 Mailing Address Walnut Ave., Signal Hill. CA 90755 Pax (562)424-2329 Email Address "Mv^ia'gflreggciniiing-com I hereby agree to comply with all appllcabfe laws arid regulations of the County of San Luis Obispo and the State of California pertaining to well construction, destruction, repair or modification. Within slrty days after completion of the well, 1 will furnish Environmental Health Services with a well completion report. This application becomes a valid permit following sign off by Environmental Health Services. ORIUJNC SHAU NOT COMMENa UNTIL THIS APPUCATION IS APPROVED <EHS requires 48 hour notice before completion of work) Contractor Signature Brian Saveia o«!. a:Sffi6''ooo*?Tw Contractor Printed Name Brian Savela Date 05/16/2022 RECEIVED 8Y C WELL SITE APPROVED: YEsM NO □ , WELL SITE APPROVAL GPS OOORDINATK FOR OFFICE USE ONLY , ^ DATE/-=>^ / / PAldS - PERMITiXPIRATION DATE. SPECIAL REQUIREMENTS FOR DRILLING CONTRACTOR WELL SEAL WITNESSED YES □ NO □ BY. WELL SEAL GPS COORDINATES DATE.DEPTH W WELL COMPLETION REPORT RECEIVED DATE WELL PERMIT PLOT PLAN SAN LUIS OBISPO COUNTY ENVIRONMENTAL HEALTH SERVICES 2156 SIERRA WAY STE. B/PO BOX 1489 SAN LUIS OBISPO, CALIFORNIA 93401 PHONE: (805)781-5544, FAX (805)781-4211 EMAIL: EHSiacO.SLO.CA.US SCALE: %" = 25' INDICATE BELOW THE EXACT LOCATION OF PROPOSED WELL WITH RESPECT TO THE FOLLOWING ITEMS WITHIN A 200 FOOT RADIUS: PROPERTY LINES, EASEMENTS, UNDERGROUND STORAGE TANK SYSTEMS, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS, ANIMAL ENCLOSURES AND ANY OTHER CONCENTRATED SOURCES OF POLLUTION. INCLUDE DIMENSIONS. ALL PROPOSED WELL SITES SHALL BE DESIGNATED WITH A FLAGGED SURVEYOR'S STAKE LABELED "WELL SITE." DRILLING SHALL NOT COMMENCE UNTIL THIS APPLICATION IS APPROVED. VALL'fc^ Li k Environmental Health Services Division Pubiic Health Department Health Agency Hap rpt RHvtAca Pupow Oniir nv« Countv of Sm Uis 06t«g sotsnoi aMumi for tnt oamaoes catm 9f •rroa cr vntwns mVit CHa ■ndrmum rowanirtt menu ot lr^i«d im raca cum ara acturata am raaaHt \ inoori inch* looreet Locator!), aiauncB), aess anO coordf^an )rown haeoh, f any. are approdn^ate MM Mto (0 locaooA «paaaosad tm* nmco la Km MHtBca er any Of iM fciiaMne aama •aoiPi a so fooi ratfus pmyav naaiimnfi: uti bodara oi c«ur«*c drHnap*paivn: loMt M«i« «HIr amerm and prVHa aaivaaa dMooul•yatanv, Mirnl «na«atf«a Mm pewu/ aourcaa of podtmen aM cenlmnaien HailPtod In Hatd Haitftfd &s and arv araaa Mh knearn or «Mp*dad Mil or mm poihiicn or a>iil«nnalan. Inoludv aimsHona. aiipropoaod MsdMcft Hitfi M dauaaacM mm afiioffedmtwfdt aata kHi«M Mb' oamni ttm not cammnca loduMft vpicMoniavpmo, q 2/18/2022 Directions to site* FoIIovk US-101 N to Los Osos Valley Rd in San Luis Obispo. Take exit 200A from LIS-101 N, Turn left onto Los Osos Valley Rd. Turn right onto Froom Ranch Way. Coordinates: 35.256667 N, 120.678164 W Gate code(s) and survey contact information:. COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 5/18/2022 To: WATER SYSTEMS CONSULTING Care of: JOSHUA REYNOLDS Well Permit Application Information Drilling Contractor: GREGG DRILLING Permit ID: WP1027430 Permit#: 2022_062 Permit Expiration Date: 11/18/2022 APN#: The referenced permit is approved provided the following Items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Wei! Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781-5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B j San Luis Obispo, CA 93401 | (P) 805-781 -5544 | (F) 805-781 -4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael HiWHealth Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director 5/18/2022 Well Permit Application Information Drilling Contractor GREGG DRILLING GREGG DRILLING WP1027430 2726 WALNUT AVENUE f 2022.062Permit Expiration Date: 11/18/2022 SIGNAL HILL, CA 90755 ^ The referenced permit is approved provided the following items are submitted to our agency within 60 days: Monitoring Well Installation • A certification of installation in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Monitoring Well Destruction: • A certification of monitoring well destruction in accordance with the permit shall be provided by the geologist overseeing the project. • Confirmation that Well Completion Reports have been submitted to the State Department of Water Resources. Soil Boring Completion: • A certification of proper closure in accordance with the permit shall be provided by the geologist overseeing the project. If you have questions concerning this letter, please contact your district hazardous material inspector at 805-781 -5544. County of San Luis Obispo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs COUNTY OF SAN LUIS OBISPO HEALTH AGENCY PUBLIC HEALTH DEPARTMENT Michael Hill Health Agency Director Penny Borenstein, MD, MPH Health Officer/Public Health Director COMPLETION OF WORK FORM Property Owner: CITY OF SAN LUIS OBISPO Property Address: FROOM RANCH WAY AND LAN LUIS RANCH ROAD RIGHT OF WAY, SAN LUIS OBISPO Permit Number: 2022_062 WP: WP1027430 APN: Select: □ Monitoring Well Installation □ Monitoring Well Closure □ Soil Boring The referenced work was completed on . As required under Section 13751 of the California Water Code, the Well Completion Report will be submitted within sixty (60) days for monitoring wells. Geologist, Hydrologist or Well Consultant Name Registration number Signature Date County of San Luis Obtspo Environmental Health Services Division 2156 Sierra Way, Suite B | San Luis Obispo, CA 93401 | (P) 805-781-5544 | (F) 805-781-4211 www.slopublichealth.org/ehs WSC Summary Report of Well Profiling Fieldwork Remedial Investigation Report City of San Luis Obispo | F Appendix F WSC Summary Report of Well Profiling Fieldwork F Dear City of San Luis Obispo, Despite schedule changes, this project was completed within the time frame established for the work. All components of this fieldwork, including the sampling and profiling at each well, the dynamic sampling and profiling at HWY101 Well, and the 8-hr step test and 24-hr pump test at HWY101 Well, were completed. During the first week of fieldwork, BESST realized that their fiber optic system they typically use for profiling was not working. They decided to switch to a different sensor to read the dye concentrations, called an AquaTroll600. The larger diameter of the sensor meant that the planned lift and shift technique that allows for profiling without the need for removing the pump was not possible. Instead, for the project, All American proceeded to pull out the pump and components entirely and store off-site for Pacific Beach Well, San Luis Ranch Well, and CJAR Ag Well. BESST completed the sampling at HWY101 Well on Wednesday (8/4) and Thursday (8/5) of that week. On Wednesday (8/4), All American removed the pump at San Luis Ranch Well. Finally, on Friday (8/6), BESST completed the ambient profiling at HWY101 Well, and sent off the samples that were collected on Thursday. For the second week, work was split between Pacific Beach Well and HWY101 Well. There was a scheduling issue with All American on Monday (8/9), so BESST completed half of the ambient profiling at Pacific Beach Well. On Tuesday (8/10), the contractors offloaded the treatment system, while BESST connected the tubing from the treatment system to the well head. All American was supposed to come back after lunch, but they never showed and left one of their trucks on-site at HWY101 Well. The next day (8/11), the water tank company tried to bring a 20,000-gallon tank on-site, but it was too large. All American installed a temporary pump in HWY101 Well, and BESST completed the ambient profiling at Pacific Beach Well. On Thursday (8/12), a 5,000-gallon water tank was delivered and placed on-site. The contractors were then able to get the HWY101 Well pump running, and BESST was able to complete NPDES sampling. BESST attempted to ship the samples to the lab on Friday, but the lab was closed for the weekend. Instead, the samples were shipped out on Monday (8/16). To finish the week, at Pacific Beach Well, BESST completed sampling and All American re-installed the pump. The work for Week 3 was focused on San Luis Ranch Well and was conducted from Tuesday (8/17) to Thursday (8/19). All American attempted to remove the San Luis Ranch Well pump, but the diameter of the pipe was an unusual size that they did not have the equipment to pull it up. They left for the day, while their shop created a piece that would be able to grab the pipe. BESST then completed the video survey of HWY101 Well. On Wednesday (8/18), All American successfully removed the San Luis Ranch pump by cutting the piping into pieces. After the removal, BESST completed the ambient profiling at the well. Thursday (8/19) was spent re-doing the NPDES samples because some of the contaminants had a hold time that was exceeded. They also finished up the sampling and a video survey at San Luis Ranch Well. The CJAR Ag Well was to be completed during Week 4, and it was important to finish on-time so the City Farm could use the well again for their water needs. All American pulled the pump on Monday (8/23), so BESST was able to complete the video survey and the upper depths of the ambient profiling on Tuesday (8/24). On Wednesday (8/25), BESST completed the rest of the ambient profiling and all the necessary sampling. This meant that All American was able to complete re-installing the pump back into CJAR Ag Well on Thursday and the water was turned back on for the City Farm. The main objectives for Week 5 were to complete an 8-hr step test and a 24-hr pump test at HWY101 Well. The week started with All American and BESST draining the 5,000 and 1,000-gallon tanks on-site. The water from HWY101 Well passed the requirements of the NPDES sampling, so it was able to be discharged to a designated sewer drain. On Tuesday (8/31), when BESST was running the pump to check for leaks and flow rate, we noticed that the flow meter did not match the calculated flow rates using the totalizer. A new flow meter was brought to use, but it also was not precise enough for the tests. Our company (WSC) and BESST decided that it would be best to just calculate the flow rate using the totalizer during both tests. BESST started the 8-hr step test at 8:00pm on Tuesday (8/31) and finished at 4:00am on Wednesday (9/01). The test was successful, but they learned that they could only get the pump to a flow rate of 235gpm, instead of the 350gpm flow rate that was originally planned. On Wednesday (9/01) at 10:45am, the 24-hr pump test was started. The flow rate was held steady throughout the test at 235gpm. Border Patrol, CJAR Ag Well,and SLO WWTF Monitoring Well were used as the observation wells during the test. Water levels were taken at HWY101 Well and the observation wells at graduated time intervals. On Thursday (9/02) at 10:45am, the 24-hr pump test ended, and adequate recharge was observed at all the wells at 1:00pm. Then, BESST completed dynamic sampling and collected samples for dissolved copper that the City requested. Friday (9/03) was spent finishing the dynamic profiling at the well. Photo Captions Row 1 (left to right): Ambient sampling at HWY101 Well; All American removing the pump at Pacific Beach Well; Ambient profiling at HWY101 Well Row 2 (left to right): Ambient profiling at Pacific Beach Well; Treatment system at HWY101 Well Row 3 (left to right): Video survey at HWY101 Well; Cut pump piping from San Luis Ranch Well; NPDES sampling at HWY101 Well Row 4 (left to right): Bowls pulled out of CJAR Ag Well; Removing the pump piping from CJAR Ag Well; Ambient profiling at CJAR Ag Well Row 5 (left to right): Monitoring water level at SLO WWTF Monitoring Well; Dynamic sampling at HWY101 Well; Dynamic profiling at HWY101 Well Sincerely, Water Systems Consulting, Inc. Cassandra Springer, GIT | Staff Hydrogeologist Field Notes and Photos from Well Profiling Fieldwork Remedial Investigation Report City of San Luis Obispo | G Appendix G Field Notes and Photos from Well Profiling Fieldwork G Picture Log- Week One 8/3/21 Picture 1: Overview of set up Picture 2-3: Above ground test for fiber optics and laser Picture 4-5: Getting cable ready for down hole ambient test Video 1-2: Putting down cable for down hole test 8/4/21 Picture 1: Setting up HDPE Tubing Picture 2-4: PFOS Sample station Picture 5: VOC’s sample at 130 ft Picture 6: VOC’s sample at 120 ft Video 1: First sample- 130 ft TDS Video 2: Sampling VOC at 75 ft Picture Log- Week One 8/3/21 Picture 1: Overview of set up Picture 2-3: Above ground test for fiber optics and laser Picture 4-5: Getting cable ready for down hole ambient test Video 1-2: Putting down cable for down hole test 8/4/21 Picture 1: Setting up HDPE Tubing Picture 2-4: PFOS Sample station Picture 5: VOC’s sample at 130 ft Picture 6: VOC’s sample at 120 ft Video 1: First sample- 130 ft TDS Video 2: Sampling VOC at 75 ft Picture Log- Week One 8/5/21 Picture 1: Pacific Beach Well Picture 2: All American Drilling working on electrical Picture 3: Equipment for pulling the well on Smeal rig Picture 4: Lifting up rig system Video 1-2: Lifting off roof from shed Picture 5: Starting pulling up the well Video 3: Lifting the first well section/piping up Picture 6: First section of the well lifted out Picture 7: Laying down section of pipe next to shed Picture 8: First section of pipe laid out Picture 9: Second section lifted up Picture 10: Sections of pipes layer out next to shed Picture 11: Removing tape from the bowls on the sixth section of pipe Picture 12-13: Pipe section with the bowls Note: 4 wires off the motor are not taped together, unusual for submersible motor Picture 14: Pacific Beach Well Picture Log- Week One 8/6/21 Picture 1-2: AquaTroll 600 and connecting cable Picture 3: Setting up AquaTroll to go down-hole Picture 4: Well with the sensor down hole Video 1: Lowering sensor and tubing down the well Video 2: Conducting profiling for first depth of 45ft Picture 5: Dominic (BESST) watching feedback from sensor and recording data Picture 6: Bringing sensor and tubing down to 120ft Picture Log- Week Two 8/9/21 Picture 1: BESST set up for ambient profiling at Pacific Beach Well Picture 2: Setting up AquaTroll Sensor Picture 3: Injector and sensor down hole Video 1: Ambient profiling set-up, sensor and injector down hole Video 2: Putting down injector and sensor down for first injection at 125ft Picture 4: Whole set-up with injector and sensor down hole Picture 5: Close up of mechanism to measure depth of the injector and sensor Picture Log- Week Two 08/10/21 Picture 1: Treatment truck pulling into HWY101 well site Picture 2: Pulling in semi truck with treatment system Video 1: Pulling in semi truck with treatment system Picture 3: Moving treatment system to the staging area, North of Gate E Picture 4: Unloading the semi truck at the staging area Picture 5: Treatment tanks and pumps on the truck Picture 6: Unloading pumps off semi truck Video 2-4: Unloading the second pump form the truck Picture 7: Placing down the first tank Picture 8: Attempting to get semi truck out of field site Picture 9: Moving a piece of the treatment system Picture 10-12: Final treatment set up Picture 13: Intake carbon pump system Picture 14: Outtake carbon pump system Picture 15: Treatment system with the pumps connected Picture Log- Week Two 08/11/21 Picture 1: Well piping Picture 2: Bowls and motor Picture 3: Close up of motor Picture 4: All American working on the wiring for the submersible motor Picture 5: Generator for the treatment system Picture 6-7: Information labels on pump motor Video 1: Wrapping the bowls in tape and putting the bowls and motor down hole Video 2: Lifting the first segment of piping Video 3: Dropping the first piping segment downhole Picture 8: Well with discharge pump attached Picture Log- Week Two 8/12/21 Picture 1-4: Tubing system from discharge pipe heading to treatment system Picture 5: 5000 gallon polyurethane tank next to the treatment system Picture 6: Discharge pump Picture 7: Close up on flow meter/totalizer Picture Log- Week Two 08/13/2021 Picture 1: HWY101 Well sealed up for the weekend Picture 2: Sampling station at Pac Beach Well Video 1: All American removing roof from Pac Beach well Picture Log- Week Two 08/17/21 Picture 1-3: First look at the San Luis Ranch Well Picture 4: All American set up, taking out the motor Picture 5: We’ll with motor taken off and shaft has been cut Video 1: Pulled the well pump, saw the piping was larger than expected Picture 6-7: Pulling the first section of piping out Picture 8: Elevator part is too big for the piping Picture 9: BESST set-up for video survey of HWY101 well Video 2-3: Conducting video survey of HWY101 Well Picture Log- Week Two 8/18/2021 Picture 1: Sections of piping that have been pulled from San Luis Ranch Well Video 1: Having to cut the pipes because too rusted to undo by hand Picture 2: Last section and bowls pulled from the well Picture 3: First section of piping that broke off during extraction Picture 4: Cut sections of the piping that have been extracted Picture 5: San Luis Ranch Well after pump removed Video 2: BESST set up for ambient profiling Picture 6: Tubing and sensor going downhole for ambient profiling Picture Log- Week Two 8/19/2021 Picture 1: BESST preparing sample labels Picture 2: All American setting up the discharge pipe onto HWY101 well Picture 3: Tubing from the discharge pipe heading to the treatment system Picture 4: Sampling set up at the HWY101 well Video 1: Conducting re-sampling of the NPDES samples at HWY101 Well Picture 5: Treatment system with 5000 gallon tank and 1000 gallon tank Video 2: Sampling set up at San Luis Ranch Well Picture 6: Obtaining the first sample Picture Log- Week Two 08/23/2021 Picture 1-2: CJAR Ag Well Overview Picture 3: All American pulling the wires to shut down secondary pump attached to well Picture 4: Pulling wires from the well head Picture 5: All American setting up the pump Picture 6: Pulling the well head out and first pump section Video 1: Pulling the first pump section out Picture 7: Laying the first section of piping on the truck bed Picture 8: Pulling the third section up Picture 9: Pulling the bowls and motor out Picture 10-12: Close-up of bowls and motor Picture Log- Week Two 08/24/21 Picture 1-2: BESST set-up for video survey at CJAR Ag Well Picture 3-4: BESST set-up for ambient profiling Picture Log- Week Two 08/25/2021 Picture 1-2: BESST set-up for ambient profiling at CJAR Ag Well Picture 3: BESST set-up for sampling Video 1: Taking last sample of the day (ft. Def Leppard) Picture Log- Week Two 08/26/21 Picture 1: All American arriving with the pump to be reinstalled Video 1: All American putting in the first section of piping Video 2: Taping up the wires to the second segment of piping Video 3: Dropping down third section of piping Picture 2: CJAR Ag Well after the pump has been reinstalled Picture Log- Week Two 08/30/2021 Picture 1-2: Tubing connected to the well and treatment system Video 1: Tank draining to the discharge point (sewer) Picture Log- Week Two 08/31/2021 Picture 1: Generator for the treatment system Picture 2-3: BESST changing out the treatment system filter bags Picture 4: Overview of treatment system and tanks Picture 5: Tubing heading to HWY101 well Picture 6: HWY101 Well with tubing and discharge pipe connected Video 1: Running pump for first initial run Video 2: Flow Meter during second run to measure flow rate Picture 7: Draining out the last bit of potable water from the tank Video 3-4: Water that didn’t reach the discharge point, tipping tank to drain last bit out Picture 8: New flow meter reading in gpm Video 5: Flow meter for second test to check flow rate Video 6: Flow meter for third test checking for flow rate Picture Log- Week Two 09/01/21 Picture 1: Filter bags that were removed after the 8-hr pump test Picture 2: Monitoring WL at WRF Monitoring Well 2 Picture Log- Week Two 09/02/21 Picture 1: Setting up the tubing to begin sampling at HWY101 Well Picture 2: Sample bottles for city lab, measuring for copper Video 1: Putting the sample tubing down the hole Picture 3: Taking the 115ft depth sample Picture 4: Sample tubing going down hole Video 2: Taking VOC’s sample Picture 5: Chain of Custody for city copper samples Picture 6: Labeling and preparing sample sets Picture 7: Ice chests for the sample bottles Picture 8: Copper that has rubbed off the sensor onto Miles’ glove Video 3: Copper rubbed off onto Miles’ glove from the sensor Picture Log- Week Two 09/03/21 Picture 1: BESST set-up for dynamic profiling Picture 2: Putting the sensor and dye tubing down hole Picture 3: BESST Flourometer Field Photos BESST Reports on Ambient Flow and Chemistry Profiling Fieldwork Remedial Investigation Report City of San Luis Obispo | H Appendix H BESST Reports on Ambient Flow and Chemistry Profiling Fieldwork H 1 Ambient Flow and Chemistry Profile for San Luis Obispo Calle Joaquin Agricultural Reserve (CJAR) Well Published Date: 11/10/2021 Profiled Date: 08/25/2021 – 08/26/2021 Revised Date: 11/23/21 Prepared By: Dominic Eslamian (Project Hydrogeologist) Reviewed By: Kim Miles (Senior Hydrogeologist), Miles Kohler (Field Operations Manager), M. Deniz Turan (Report Review Manager, PhD. Hydrogeology), Noah Heller (President and CEO, MSc., PG, CA 5792) 2 Table of Contents List of Figures ................................................................................................................................................ 2 List of Tables ................................................................................................................................................. 3 Introduction .................................................................................................................................................. 4 Background ................................................................................................................................................... 4 Site Recon and Well Characterization ....................................................................................................... 4 Methodology ................................................................................................................................................. 6 Ambient Flow Survey Field Procedure: .................................................................................................. 7 Depth-Dependent Water Sampling ....................................................................................................... 8 Ambient Flow Calculations ....................................................................................................................... 9 Flow Data Confidence Criteria ................................................................................................................ 10 1) Flow sensor resolution: .............................................................................................................. 10 Ambient Concentration Profiling Calculations ........................................................................................ 11 Results ......................................................................................................................................................... 13 CJAR Well Ambient Flow and Chemistry Overview ................................................................................ 13 Zonal Flow Results .................................................................................................................................. 14 Zonal Chemistry Results .......................................................................................................................... 16 Summary and Conclusions .......................................................................................................................... 17 Recommendations ...................................................................................................................................... 18 REFERENCES ................................................................................................................................................ 19 APPENDICES ................................................................................................................................................ 20 Appendix A: Well Site Photo ................................................................................................................... 20 Appendix B: Video Survey ....................................................................................................................... 21 Appendix C: Injection and sampling plan (ISP) for CJAR Well ................................................................. 23 Appendix D: Ambient Flow Results ......................................................................................................... 24 Appendix E: Laboratory Chemistry Results ............................................................................................. 25 Appendix F: Mass Balance Results .......................................................................................................... 26 List of Figures Figure 1: Satellite image of CJAR Well (highlighted in red) on agricultural reserve land and adjacent to Highway 101 in San Luis Obispo, CA. ............................................................................................................ 5 Figure 2: CJAR Well Construction Diagram ................................................................................................... 6 Figure 3: Ambient borehole velocity vs. depth. Asterisk (*) defines algebraically interpolation. .............. 14 3 Figure 4: Ambient cumulative borehole flow rate vs. depth. Asterisk (*) defines inference. .................... 14 Figure 5: Ambient zonal flow contributions vs. depth. Asterisk (*) defines inference. .............................. 15 Figure 6: Ambient mass balanced PCE with zonal flow vs. depth. NMB– Not Mass Balanced, MB- Mass Balanced. * Inferred zonal flow. ................................................................................................................. 16 Figure 7: Ambient mass balanced TDS with zonal flow vs. depth. NMB– Not Mass Balanced, MB- Mass Balanced. * Inferred zonal flow. ................................................................................................................. 16 List of Tables Table 1: Calculation variables. ...................................................................................................................... 9 Table 2: Dye sensor resolution for borehole flow rate measurement. ...................................................... 11 Table 3: Laboratory chemical analytes. ...................................................................................................... 11 4 Introduction On August 24, 2021, and August 25, 2021, BESST, Inc. (BESST) surveyed the Calle Joaquin Agricultural Reserve (CJAR) Well located in San Luis Obispo, CA for Water Systems Consulting (WSC) to generate an ambient flow and water quality profile. The purpose of this profiling investigation was to determine vertical zonal flow contributions and zonal mass-balanced chemical distributions under steady-state non- pumping conditions. Ambient profiles, particularly assist in defining the natural groundwater pathways and spatial migration of contaminant plumes, as well as quantifying the transport time of those contaminant plumes. The major contaminants of concern in this study were Total Dissolved Solids (TDS), and Volatile Organic Compounds (VOCs), namely Tetrachloroethene (PCE) and Trichloroethene (TCE). The ambient survey in this study was performed using a technology called Tracer Pulse Ambient Flowmeter (T-PAF) to estimate native zonal flow contributions along the screen of CJAR Well from 40 to 140 feet below ground surface (Ft. BGS). After the flow velocity measurements were taken, groundwater samples were collected at the same depths the flow measurements were made. The ambient water quality sampling was performed using the HydroBooster pump technology. The low flow sampling technique called “ratcheting” was used to collect ten water samples. Groundwater samples were analyzed by BSK Analytical Laboratories located in Fresno, CA. The details of the field work and site specifications relevant to the data collection as well as the field procedures and the data evaluation criteria used in ambient flow and chemistry profiling of CJAR Well are provided in the Methodology section. Analyses of well characterization, flow and chemistry data are presented in the Results section. The implications of the results are evaluated in the Summary and Conclusions section. Well site photos taken on the day of field work are included in Appendix A. The details from video survey conducted on August 24, 2021, are provided in Appendix B. The injection and sampling plan (ISP) prepared for CJAR Well is attached in Appendix C. Details of flow calculations, laboratory chemistry results, and mass balance data are included in Appendix D, E, and F, respectively. Background Site Recon and Well Characterization The CJAR Well is located at 35°15’06” N and 120°40’44” W off Calle Joaquin Road and adjacent to Highway 101 in San Luis Obispo, CA. The well is currently used for agricultural purposes. Below is a satellite image of the CJAR Well (Figure 1). The ambient flow and chemistry investigation for CJAR Well began with a review of the well construction information provided by WSC. The well casing has a 10-inch outer diameter extending to a total depth of 140 Ft. BGS, with one perforated screen section from 40 to 140 Ft. BGS (Figure 2). The video report attached in Appendix B provides the details of the condition of the well borehole at different depths via a selection of captured still-frames. According to the well construction details, a customized injection and sampling plan (ISP) was devised (Appendix C). 5 Prior to the flow and chemistry survey, the well pump (Grundfos model 30HP-8stage) which is set at 100 Ft. BGS and contains five pipe columns was removed on August 23, 2021 to avoid any interference with the ambient flow and chemistry survey and to achieve full downhole access into the well. Pump removal was completed by deconstructing the pump assembly using a hydraulic crane truck. Figure 1: Satellite image of CJAR Well (highlighted in red) on agricultural reserve land and adjacent to Highway 101 in San Luis Obispo, CA. 6 Figure 2: CJAR Well Construction. 7 Methodology Ambient Flow Survey Field Procedure: In order to collect the flow and chemistry data, a suite of technologies was utilized during the field work such as: 1) a tracer injection system that was originally developed by the USGS (Gossell, 1999) combined with a downhole fluorometer for measuring tracer velocities; 2) a small sampling pump (Panacea 200 – P200) for collecting depth-dependent groundwater samples that were co-located at each injection depth; 3) a volume booster apparatus for increasing the volume of water intake into the sampling pump; 4 ) a groundwater level meter to periodically measure static water level inside the well contemporaneously with the flow and water sampling surveys. The ambient flow survey in CJAR Well started with taking static water level measurements. These data and other observations of field conditions were manually recorded in a field notebook. In preparation for the downhole ambient flow survey, the fluorometer (In-Situ Aqua Troll 600 – AT600) was conjoined with the tracer injection tubing; the tracer injection nozzle being positioned exactly five (5)-feet above the AT600. The tracer used in the investigation was rhodamine red FWT 50, which is approved by the National Sanitation Foundation for use in public supply wells and has an NSF 60 rating by the manufacturer. The tracer solution has a specific gravity of 1.035 g/cm3 and consisted of 10 ml of raw tracer solution to every 1 gallon of water. The solution was prepared in a 5-gallon container prior to downhole deployment of the injection/detection system, mixing 5 gallons of tap water with 50 ml of raw tracer concentrate drawn and measured with a syringe. The injection apparatus consisted of an electronically controlled hydraulic system that was loaded with the tracer prior to downhole deployment. When the injection system was turned on, the solution that was prepared inside the 5-gallon container was siphoned into the circulatory system of the profiling rig, which then pumped the dye into the injection tubing. As the tubing filled, air inside of the tubing was displaced by the tracer, which eventually exited the injection nozzle located at the end of the tubing. It was critical that no air bubbles existed in the fully loaded tubing since the compressibility of the bubbles could affect the tracer release time and the flow velocity rates inside the well. Since the tracer tubing was translucent, it was relatively easy to spot air bubbles in the tubing, and if any were spotted, the tracer was purged from the tubing and reloaded into the tubing until no air bubbles were observed. Following preparation of the injection apparatus, the conjoined system was lowered into the well through a mechanical counter that measured footage to a precision of 0.1 feet. The depth location of the injection nozzle was first identified by the mechanical counter and the depth of the AT600 sensor array was calculated by adding exactly 5-feet to the measured depth of the nozzle. The readings from the AT600 were reported in the downloaded VuSitu data file. The ambient flow survey, based on the ISP, included injecting rhodamine tracer at seven discrete depths as shown in Appendix D. The strategy employed during the survey of CJAR Well was to begin the flow profile near the top of the well screen at 45 Ft. BGS and then move downwards based on the presumption of a downward flow gradient. Field observations of dye-tracer at injection depths 45, 55, and 65 Ft. BGS on August 24, 2021 confirmed that the ambient groundwater movement was downward. Therefore, on 8 August 25, 2021, it was advantageous to finish the flow survey by starting near the bottom of the well at 125 Ft. BGS and relocate the sensor to each sequential injection depth in the direction opposite of the groundwater movement such that residual tracer from the prior depth always moved away from the sensor. This technique prevented interference from previous deeper measurements that could cause false detections. All depth-dependent borehole data, including tracer detection, and other groundwater parameters were recorded electronically in real time using the VuSitu software. Tracer detection measurements were also recorded manually as a backup plan in the event that the electronic data files got corrupt or lost. At each depth location, approximately, 20 ml of tracer was released sideways (patent) through four small holes, each measuring 0.13 inches in diameter, which are spaced 90 degrees apart from each other. The sideways tracer stream is gentle in each direction in order to avoid rebound effects against the interior casing wall of the well that can affect the measured velocities. The sideways injection is essential so as not to bias velocity measurements by downward injection. Downhole, the AT600 measured the dye concentration every 1 seconds during the flow survey. The maximum wait-time for sensor detection at each injection depth was 15-minutes based on project time constraints. If the tracer was detected within this time span, the Center of Mass method (described below) was used to calculate the flow rate. If the tracer did not reach the detector within this time span, the sensor array was moved slowly upward to find the tracer cloud (Smolen, 1997). For this situation, the first detection of the tracer cloud was used to calculate the flow rate. The dye mass at any depth during the survey was identifiable above the manufacturer’s stated concentration limit of 0.01 PPB (detection limit); and assumed that there was no mixing from other dye masses released prior to and from deeper depths inside the well. The AT600 detected rhodamine concentrations ranged from 0.01-35 PPB during the survey. Depth-Dependent Water Sampling A total of 10 depth-dependent samples (including a duplicate) were collected from 40 to 140 Ft. BGS by using a small double-valve, gas-displacement pump called the Panacea 200 (P200) which was developed by BESST. The P200 system has two modes of operation; the first mode is the “Fast Purge Mode” (FPM), and the second mode is the “Ratchet Mode” (RM). The FPM is performed twice at each sample depth. The first purge cycle removes residual groundwater from the previous sampling depth, and the second cycle removes groundwater refilling the tubing from the new depth. The second cycle washes the tubing internally with water from the depth to be sampled and ensures that samples are representative of their corresponding depths. Groundwater samples were then collected with the RM because the contaminants of concern are volatiles. The P200 pump is operated by cycling compressed gas between on and off positions. The P200 pump consists of a PVC chamber that contains a foot-valve and a sample-line return valve. The foot-valve allows groundwater inside the well bore to flow into the bottom of the pump via head pressure from the well’s water column and fill both the gas-in line and the sample-return line simultaneously. Both lines are made from high pressure Nylon, and they run in parallel to each other inside a jacketed outer sheath with a safety support cable that is connected to the top of the pump. At the surface, the gas-in line is connected to a compressed gas source (nitrogen) and a two-way valve which is opened and closed to cycle the pump 9 between refill and pumping modes. When compressed gas is released from the source, the gas flows into the gas-in line and translates pneumatic pressure to hydraulic pressure that is applied to the foot valve. The foot-valve closes in response to this pressure and the water inside the gas-in line is forced to make a U-turn inside the pump, pushing the water already inside the sample line back to the surface. One purge cycle is completed when entire water in both the gas-in and sample-return line is purged from the tubing two times – which completes two purge cycles. The third and additional cycles are then used to fill sample bottles from each sample depth. Groundwater flowing through the sample-return line exits in a continuous stream of water as bottles are being filled. As the sample line begins to stiffen near the end of each cycle, the tubing is moved away from the sample bottle and positioned over a waste -water bucket; where the remaining volume is discharged and the gas pressure inside the line is allowed to bleed off after the two-way valve is closed. With the gas pressure turned off, the gas-in and sample-return line can simultaneously recharge with groundwater again. The cycle is repeated as many times as necessary to fill all the required sample bottles. As a QAQC measure, a duplicate sample was collected at 115 Ft. BGS for the purposes of evaluating the variability in analytical methods. Ambient Flow Calculations Post-field groundwater flow calculations can either use the first detection or center of mass method for calculating in-well velocities. The first detection method was used for the San Luis Ranch tracer survey (as well as all other ambient flow profiles) since it provides the most reliable results when mapping extremely low velocities in wells. The variables and the algebraic formulas used in the ambient flow calculations are presented below. Table 1: Calculation variables. 𝑣𝑎 Average borehole velocity (Feet / Minute) 𝑄𝑖 𝑎 Zonal inflow/outflow (GPM) 𝑄𝑖 𝑎𝑖 Inferred zonal outflow (GPM) 𝑄𝑐 Cumulative well discharge (GPM) 𝑑 Depth (𝐿) 𝑑𝑚 Tracer detection depth (Ft. BGS) 𝑑𝑇 Dye tracer pulse injection depth (Ft. BGS) 𝑡 Time (minutes) 𝑡𝑚 Tracer arrival time (minutes) 𝑡𝑇 Tracer pulse injection time (minutes) �ℎ Depth interval 𝑟𝑖 Average borehole radius over the depth interval, (inches) 10 Travel Time (Minutes): The travel time (t) results from subtracting the tracer arrival time (𝑡𝑚) at the fluorometer from the tracer injection depth (𝑡𝑇). 1. 𝑡= 𝑡𝑚−𝑡𝑇 Average Velocity (Ft./min): The velocity (𝑣𝑎) at injection depth “d” results from dividing the distance traveled of the dye tracer (from injection depth to sensor detection depth) over the travel time. 2. 𝑣𝑐 𝑎=𝑐𝑚−𝑐𝑇 𝑡𝑚−𝑡𝑇 Borehole Cumulative Flow (GPM): The cumulative flow rate (𝑄𝑖 𝑎) is equal to the average velocity (𝑣𝑐 𝑎) times the well cross-sectional area (𝜋𝑟𝑖 2 ). The velocity, expressed as feet per minute (Ft./Min), was multiplied by a conversion factor of 7.48 GPM per Ft3 to arrive at the GPM unit portrayed for the borehole and zonal flow rates. 3. 𝑄𝑖 𝑐=𝑣𝑖 𝑎𝜋𝑟𝑖 2 Average Zonal Flow Contribution (GPM): The center of mass and the continuity equation calculations expressed above multiply the velocity of the fluid by the cross-sectional area of the well to determine the cumulative flow of groundwater travelling past the sensor. In each case, the difference in sequentially paired cumulative flows yields the zonal inflow or outflow between depth-sequential pairs of injection depths (Qia), with results reported in gallons per minute (GPM). However, the outflow contribution from the casing bottom (Qiai) into the uncased section of the well (125’ to 133’ BGS) was inferred (not measured) as a means of reaching a zero-difference in volume between total inflow and outflow. 4. 𝑄𝑖 𝑎=𝑄𝑖 𝑐−𝑄𝑖−1 𝑐 5. 𝑄𝑖 𝑎𝑖= −∑𝑄𝑖 𝑎 Flow Data Confidence Criteria 1) Flow sensor resolution: The sensor resolutions detailed below in Table 2 were used to evaluate the velocity and borehole flow data measured at each investigated depth. The equipment limitation is based on the observed dye movement limited by the operation of the dye sensor. The reporting limit (RL) reflects the time allowance used to estimate the dye movement relative to the sensor; in which the field team waited 15 minutes for the dye cloud to travel 5 ft. between the injector depth and the sensor depth. After this point, the field team would move the dye sensor to detect the dye cloud. Due to the expected dispersion of the dye could within the well bore, dye travel estimates less than 1 ft from the original injection depth at or after the 10-minuite wait period were considered stationary. 11 Table 2: Dye sensor resolution for borehole flow rate measurement. Sensor Resolution for Measured Borehole Flow Rates* Borehole Diameter Detection Limit (DL) Reporting Limit (RL) Inches Ft./Min GPM Ft./Min. GPM 20 0.01 1.6 0.5 8.2 18 0.01 1.3 0.5 6.6 16 0.01 1.0 0.5 5.2 14 0.01 0.8 0.5 4.0 12 0.01 0.6 0.5 2.9 10 0.01 0.4 0.5 2.0 8 0.01 0.3 0.5 1.3 Poor assigned to values below the DL. Fair assigned to values detected between DL and RL. High assigned to values detected above the RL. Velocity rating is calculated from the travel time field limitation of 5 ft/15 min. Borehole flow rating is the velocity rating times the well’s cross-sectional area and Ft3 to GPM conversion (7.48). The red line applies to the CJAR Well. * Does not apply to zonal flow rates. Ambient Concentration Profiling Calculations Water chemistry analyses of TDS and VOCs were performed by BSK Analytical Laboratories. The Table 3 below presents the detected and non-detected analytes from the lab results. Table 3: Laboratory chemical analytes. Detected Analytes Non-Detect Analytes Total Dissolved Solids (TDS) (mg/L) 1,1,1-Trichloroethane Tetrachloroethene (PCE) 1,1,2,2-Tetrachloroethane 1,1,2-Trichloro-1,2,2- trifluoroethane 1,1,2-Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2,4-Trichlorobenzene 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,4-Dichlorobenzene 12 Benzene Carbon Tetrachloride Chlorobenzene Cis-1,2-Dichloroethene Cis-1,3-Dichloropropene Dichloromethane Ethylbenzene m, p-Xylenes Methyl-t-butyl ether o-Xylene Styrene Toluene Trans-1,2-Dichloroethene Trans-1,3-Dichloropropene Trichloroethene (TCE) Trichlorofluoromethane Vinyl Chloride Total 1,3-Dichloropropene Total Xylenes BOLD analytes are featured in the chemical mass balance results All analytes are reported in ug/L, except for TDS. Of all the analytes listed, this report focuses only on the findings of concentration distributions for tetrachloroethene (PCE) and total dissolved solids (TDS). Only concentrations of these analytes from sequential inflow zones can be flow-weighted to transform cumulative (lab) concentrations that were measured inside the pipe (well) to mass balance estimates of zonal concentrations outside the pipe within the surrounding formation. Outflow zones are treated differently in that laboratory analytical results represent concentrations of each contaminant inside the well and assumes that there are no external contributions of volume and chemistry from the surrounding formations. Consequently, there are no flow-weighted calculations to estimate the formation chemistry for each interval surrounding the well. The mass balance calculation applied to the zonal inflow chemistry is defined below. Chemical Mass Balance 1. 𝐼𝑑 𝑄𝑐>0 𝑡�𝑑𝑛: 𝐶𝑖 𝑎=𝑄𝑖 𝑐𝐶𝑐1 𝑐−𝑄𝑖−1 𝑐𝐶𝑐2 𝑐 𝑄𝑖 𝑎 2. 𝐼𝑑 𝑄𝑐<0 𝑡�𝑑𝑛:𝐶𝑖 𝑎=𝐶𝑐1 𝑐 13 Results CJAR Well Ambient Flow and Chemistry Overview The results from the CJAR Well ambient flow survey indicated a downward flow gradient and a volumetric rate of flow ranging from 0.2 to 1.7 gallons per minute (GPM) with an estimated 71% of total cumulative flow being derived from 45 to 55 Ft. BGS (Figures 3 – 5). The zonal flow contribution results show an inflow section from 45 to 75 Ft. BGS and an outflow section from 75 to 133 Ft. BGS. The depth intervals marked with an asterisk (*) are flagged because these zonal flow values had to be inferred. The mass balance calculations could only be applied to the three sequential inflow zones (45 to 55 Ft. BGS, 55 to 65 Ft. BGS, and 65 to 75 Ft. BGS). The reason for this is twofold as there are two technical requirements. First, only inflow chemistry can be mass balanced and, second, there must be two depth sequential cumulative inflow values paired with two depth sequential lab concentration values to calculate a mass balanced estimate of the analyte’s concentration within the surrounding formation interval. The chemistry results for the CJAR Well ambient survey found consistent ubiquitous detection of PCE throughout the well. Within the inflow zones from 45 to 75 Ft. BGS, the PCE concentration ranges from 4.1 ug/L to 16.0 ug/L – all depths being near or over the Maximum Contaminant Level (MCL) of 5 ug/L. The highest PCE concentration of 16 ug/L from 55 to 65 Ft. BGS likely due to a mass balance calculation bias at which the zonal flow value used in the calculation equations is so small that the estimated PCE concentration becomes amplified. Hence, this value is flagged with an exclamation point (!) on the chemistry graph of PCE (Figure 6). TDS concentrations range around 600 mg/L throughout CJAR Well – over the Secondary MCL of 500 mg/L at all depths (Figure 7). 14 Zonal Flow Results Figure 3: Ambient borehole velocity vs. depth. Asterisk (*) defines inference. Figure 4: Ambient borehole cumulative flowrate vs. depth. Asterisk (*) defines inference. 15 Figure 5: Ambient zonal flow contributions vs. depth. Asterisk (*) defines inference. 16 Zonal Chemistry Results Figure 6: Ambient mass balanced PCE with zonal flow vs. depth. NMB– Not Mass Balanced, MB- Mass Balanced. * Inferred zonal flow. Figure 7: Ambient mass balanced TDS with zonal flow vs. depth. NMB– Not Mass Balanced, MB – Mass Balanced. * Inferred zonal flow. 17 Summary and Conclusions Ambient zonal flow contribution results for CJAR Well show that the highest water yielding interval is from 45 to 55 Ft. BGS at 1.7 GPM. The chemistry results show PCE to be above the MCL of 5 ug/L at each investigated depth interval, except from 45 to 55 Ft. BGS. If the well will serve as a drinking supply well, the PCE concentrations need to be addressed with treatment in order to lower them below the MCL. 18 Recommendations The recommendations for the CJAR well is to acquire treatment for PCE due to above MCL concentrations throughout all but one investigated depth interval. Thus, as a result, well modification is not recommended. Furthermore, it is recommended to perform dynamic flow and chemistry survey. A dynamic survey is useful in hydraulically engaging the surrounding formation and therefore, recommended to establish a better understanding of the well hydraulics and distribution of formational flow and chemistry. 19 REFERENCES Gossell, M. A., Nishikawa, T., Hanson, R. T., Izbicki, J. A., Tabidian, M. A., Bertine, K., 1999. Application of Flowmeter and Depth-Dependent Water Quality Data for Improved Production Well Construction. Groundwater. Vol. 37 (5), p. 729-735. Izbicki, J. A., 2004. A Small Diameter Sample Pump for Collection of Depth-Dependent Samples from Production Wells Under Pumping Conditions. U.S. Geological Survey Fact Sheet 2004-3096. Smolen, James J., 1996. Cased Hole and Production Log Evaluation, pages 269-293, PenWell Publishing Company. 20 APPENDICES Appendix A: Well Site Photo Image 1: CJAR Well site. 21 Appendix B: Video Survey Image 2: CJAR Well static water level at 10.4 Ft. BGS. Image 3: CJAR Well start of screen and PVC glue. 22 Image 4: CJAR Well PVC glue again at 62 Ft. BGS. Image 5: CJAR Well total depth at 133 Ft. BGS with sediment fill. 23 Appendix C: Injection and sampling plan (ISP) for CJAR Well 24 Appendix D: Ambient Flow Results Sensor Depth Injection Depth Detected Depth First Detection Travel Time Flow Direction Borehole Velocity Cumulative Borehole Flow Zonal Flow Rate Inflow Outflow Depth Interval Ft. BGS Ft. BGS Ft. BGS Minutes Ft/Min GPM GPM Ft. BGS 0.00 0.00 40-45* 60 55 60 0:11:55 down 0.42 1.71 1.71 1.71 45-55 70 65 70 0:10:29 down 0.48 1.94 0.23 0.23 55-65 80 75 80 0:08:31 down 0.59 2.39 0.45 0.45 65-75 90 85 90 0:09:45 down 0.51 2.09 -0.30 -0.30 75-85 100 95 100 0:16:35 down 0.30 1.23 -0.86 -0.86 85-95 110 105 110 0:19:47 down 0.25 1.03 -0.20 -0.20 95-105 -0.01 -0.01 105-115* 130 125 130 0:19:56 down 0.25 1.02 0.00 0.00 115-125 0.00 -1.02 -1.02 125-133* ∆Zonal Flow 2.40 -2.40 * algebraically Interpolated 25 Appendix E: Laboratory Chemistry Results Sample DepthDepth IntervalTotal Dissolved Solids (TDS)Tetrachloroethene (PCE)Ft. BGS Ft. BGS mg/L ug/L 500 5 1000.0 N/A 45 40-45 630.0 6.2 55 45-55 630.0 4.2 65 55-65 630.0 3.2 75 65-75 620.0 5.6 85 75-85 620.0 5.5 95 85-95 610.0 6.1 105 95-105 610.0 6.4 115 105-115 620.0 6.0 125 115-125 630.0 6.2 133*125-133*630.0 6.2 Well Depth Laboratory Chemistry Results Maximum Contaminant Level (MCL) Secondary MCL Only shows detected analytes, *inferred chemistry 26 Appendix F: Mass Balance Results Sample DepthDepth IntervalTotal Dissolved Solids (TDS)Tetrachloroethene (PCE)Ft. BGS Ft. BGS mg/L ug/L 500 5 1000.0 N/A 45 40-45 NMB 630.0 6.2 55 45-55 MB 630.0 4.1 65 55-65 MB 576.7 16.0 75 65-75 MB 620.0 6.3 85 75-85 NMB -620.0 -5.6 95 85-95 NMB -610.0 -5.5 105 95-105 NMB -610.0 -6.4 115 105-115 NMB -620.0 -6.4 125 115-125 NMB 630.0 6.2 133*125-133* NMB -630.0 -6.2 Well Depths Mass Balance Results Secondary MCL Maximum Contaminant Level (MCL) NMB : Not-Mass Balanced, MB : Mass Balanced 1 Ambient Flow and Chemistry Profile Pacific Beach Well Profile Date: 08/09/2021 – 08/13/2021 Published Date: 10/2 1 /2021 Revised Date: 11/23/2021 Prepared By: Dominic Eslamian (Project Hydrogeologist) Reviewed By: Miles Kohler (Field Operations Manager), Kim Miles (Senior Hydrogeologist), M. Deniz Turan (Report Review Manager, PhD. Hydrogeology), Noah Heller (President and CEO, MSc., PG, CA 5792) 2 Table of Contents List of Figures ................................................................................................................................................ 3 List of Tables ................................................................................................................................................. 3 Introduction .................................................................................................................................................. 4 Background ................................................................................................................................................... 4 Site Recon and Well Characterization ....................................................................................................... 4 Methodology ................................................................................................................................................. 7 Ambient Flow Survey Field Procedure: .................................................................................................. 7 Depth-Dependent Water Sampling ....................................................................................................... 8 Ambient Flow Calculations ....................................................................................................................... 9 Flow Data Confidence Criteria ................................................................................................................ 11 1) Flow sensor resolution: .............................................................................................................. 11 Ambient Concentration Profiling Calculations ........................................................................................ 11 Results ......................................................................................................................................................... 14 Pacific Beach Well Ambient Flow and Chemistry Overview ................................................................... 14 Zonal Flow Results .................................................................................................................................. 15 Zonal Chemistry Results .......................................................................................................................... 17 Summary and Conclusions .......................................................................................................................... 18 Recommendations ...................................................................................................................................... 18 REFERENCES ................................................................................................................................................ 19 APPENDICES ................................................................................................................................................ 20 Appendix A: Wellhead Photos ................................................................................................................ 20 Appendix B: Injection and sampling plan (ISP) for Pacific Beach Well ................................................... 21 Appendix C: Ambient Flow Rsults ........................................................................................................... 22 Appendix D: Laboratory Chemistry Results ............................................................................................ 23 Appendix E: Mass Balance Results .......................................................................................................... 24 3 List of Figures Figure 1: Satellite image of Pacific Beach Well (highlighted in red) on Los Ojos Valley Road in San Luis Obispo, CA. .................................................................................................................................................... 5 Figure 2: Pacific Beach Well Construction. ................................................................................................... 6 Figure 3: Ambient borehole velocity vs. depth ........................................................................................... 15 Figure 4: Ambient cumulative borehole flow rate vs. depth. “J” values indicate that the measured result was observed between the reporting and method detection limit for the instrumentation (sensor). ..... 15 Figure 5: Ambient zonal flow contributions and losses vs. depth. “J” values indicate that the measured result was observed between the reporting and method detection limit for the instrumentation (sensor). .................................................................................................................................................................... 16 Figure 6: Mass Balanced TDS and zonal flow contribution plotted. ........................................................... 17 Figure 7: Mass balanced PFBS and zonal flow contributions plotted. ........................................................ 17 List of Tables Table 1: Calculation variables. ...................................................................................................................... 9 Table 2: Dye sensor resolution for borehole flow rate measurement. ...................................................... 11 Table 3: Laboratory chemical analytes. ...................................................................................................... 12 4 Introduction On August 9, 2021, through August 13, 2021, BESST, Inc. (BESST) surveyed the Pacific Beach Well, located in San Luis Obispo, CA, for Water Systems Consulting (WSC) to generate an ambient flow and water quality profile. The purpose of this profiling investigation was to determine vertical zonal flow contributions and zonal mass-balanced chemical distributions under steady-state non-pumping conditions. Ambient profiles, particularly assist in defining the natural groundwater pathways and spatial migration of contaminant plumes, as well as quantifying the transport time of those contaminant plumes. The major contaminants of concern in this study were per- and polyfluoroalkyl substances (PFAS), Total Dissolved Solids (TDS), and Volatile Organic Compounds (VOCs), namely Tetrachloroethene (PCE) and Trichloroethene (TCE). The ambient survey in this study was performed using a technology called Tracer Pulse Ambient Flowmeter (T-PAF) to estimate native zonal flow contributions along the screen of Pacific Beach Well from 40 to 130 feet below ground surface (Ft. BGS). After the flow velocity measurements were taken, groundwater samples were collected at the same depths the flow measurements were made. The ambient water quality sampling was performed using the Panacea-200 pump. The low flow sampling technique called “ratcheting” was used to collect ten water samples. Groundwater samples were analyzed by BSK Analytical Laboratories for TDS and VOCs in Fresno, CA, and by Eurofins Laboratories for PFAS in Monrovia, CA. The details of the field work and site specifications relevant to the data collection as well as the field procedures and the data evaluation criteria used in ambient flow and chemistry profiling of Pacific Beach Well are provided in the Methodology section. Analyses of well characterization in regard to the flow and chemistry data are presented in the Results section. The implications of the results are evaluated in the Summary and Conclusions section. Well site photos taken on the day of field work are included in Appendix A. The injection and sampling plan (ISP) prepared for Pacific Beach Well prior to the field work is attached in Appendix B. Details of flow calculations, laboratory results, and mass balance data are included in Appendices C, D and E, respectively. Background Site Recon and Well Characterization The Pacific Beach Well is located at 35°15’11.9” N and 120°41’16.4” W, on Los Ojos Valley Road in San Luis Obispo, CA. Below is a satellite image of the Pacific Beach Well (Figure 1). The ambient flow and chemistry investigation for Pacific Beach Well began with a review of the well construction provided by WSC. According to the well construction details, a customized Injection and Sampling Plan (ISP) was devised. The well sits inside a wooden housing unit. Prior to the flow and chemistry survey, the well pump (model 150s-15Hp-8S), containing six 21-feet pipe columns and set at 125 Ft. BS, was removed on August 5, 2021, to avoid any interference with the ambient survey and achieve full access into the well casing. Pump removal was achieved by lifting the roof off of the housing unit and then the pump assembly with a hydraulic crane. The well casing is a 10-inch outer diameter and reaches 5 to total depth of 130 feet below ground surface (Ft. BGS), with one perforated screen section from 40 to 130 Ft. BGS (Figure 2). Figure 1: Satellite image of Pacific Beach Well (highlighted in red) on Los Ojos Valley Road in San Luis Obispo, CA. 6 Figure 2: Pacific Beach Well Construction. 7 Methodology Ambient Flow Survey Field Procedure: In order to collect flow and chemistry data, a suite of technologies was utilized during the field work such as: 1) a tracer injection system that was originally developed by the USGS (Gossell, 1999) combined with a downhole fluorometer for measuring tracer velocities; 2) a small sampling pump (Panacea-200) for collecting depth-dependent groundwater samples that were co-located at each injection depth; 3) a groundwater level meter to periodically measure static water level inside the well contemporaneously with the flow and water sampling surveys. The ambient flow survey in the Pacific Beach Well started with taking static water level measurements. These data and other observations of field conditions were manually recorded in a field notebook (Appendix F). In preparation for the downhole ambient flow survey, the fluorometer (In-Situ Aqua Troll 600 – AT600) was conjoined with the tracer injection tubing; the tracer injection nozzle being positioned exactly five (5)-feet from the AT600. The tracer used in the investigation was rhodamine red FWT 50, which is approved by the National Sanitation Foundation for use in public supply wells and has an NSF 60 rating by the manufacturer. The tracer solution has a specific gravity of 1.035 g/cm3 and consisted of 10 ml of raw tracer solution to every 1 gallon of water. The solution was prepared in a 5 -gallon container prior to downhole deployment of the injection/detection system, mixing 5 gallons of tap water with 50 ml of raw tracer concentrate drawn and measured with a syringe. The injection apparatus consisted of an electronically controlled hydraulic system that was loaded with the tracer prior to downhole deployment. When the injection system was turned on, the solution that was prepared inside the 5-gallon container was siphoned into the circulatory system of the profiling rig, which then pumped the dye into the injection tubing. As the tubing filled, air inside of the tubing was displaced by the tracer, which eventually exited the injection nozzle located at the end of the tubing. It was critical that no air bubbles existed in the fully loaded tubing since the compressibility of the bubbles could affect the tracer release time and the flow velocity rates inside the well. Since the tracer tubing was translucent, it was relatively easy to spot air bubbles in the tubing, and if any were spotted, the tracer was purged from the tubing and reloaded into the tubing until no air bubbles were observed. Following preparation of the injection apparatus, the conjoined system was lowered into the well through a mechanical counter that measured footage to a precision of 0.1 feet. The depth location of the injection nozzle was first identified by the mechanical counter and the depth of the AT600 sensor array was calculated by adding or subtracting exactly 5-feet to the measured depth of the nozzle. The readings from the AT600 were reported in the downloaded VuSitu data file. The ambient flow survey, based on the ISP, included injecting rhodamine tracer at nine discrete depths as shown in Appendix B. The strategy employed for the ambient flow profile at the Pacific Beach Well was to select a starting position of the AT600, that being above or below the injection nozzle. Based on limited data about the well, the decision on which position to try first was arbitrary – and it was decided to first choose locating the sensor 5-feet below the tracer injection nozzle. 8 During the first day of the survey on August 9, 2021, for the Pacific Beach Well was to begin the flow profile from the well bottom at 125 Ft. BGS and then move upward towards static water level at 12 Ft. BGS. Observations during testing indicated that velocities were very low and likely below the reporting limit of the instrumentation. With that said, field measurements suggested that there was a slight upward gradient of water movement inside the well, and for this reason, these measurements were flagged (J) to indicate uncertainty in the associated results (see the Results section for details). With field observations indicating an upward movement of the tracer from the first day of velocity profiling, it was decided on the second day of the survey (August 13, 2021) that the AT600 be relocated to a distance of 5ft above the injection nozzle in an attempt to capture the dye tracer as it moved upwards. All depth-dependent borehole data, including tracer detection, and other groundwater parameters were recorded electronically in real time using the VuSitu software. Tracer detection measurements were also recorded manually as a backup plan in the event that the electronic data files got corrupt or lost. At each depth location, approximately, 100 ml of tracer was released sideways (patent) through four small holes, each measuring 0.13 inches in diameter, which are spaced 90 degrees apart from each other. The sideways tracer stream is gentle in each direction in order to avoid rebound effects against the interior casing wall of the well that can affect the measured velocities. The sideways injection is essential so as not to bias velocity measurements by downward injection. The AT600 measured the dye concentration every 1 second during the flow survey. The maximum wait-time for sensor detection at each injection depth was 15-minutes based on project time constraints. If the tracer was detected within this time span, the Center of Mass method (described below) was used to calculate the flow rate. If the tracer did not reach the detector within this time span, the sensor array was moved slowly upward or downward to find the tracer cloud (Smolen, 1997). For this situation, the first detection of the tracer cloud was used to calculate the flow rate. The dye mass at any depth during the survey was identifiable above the manufacturer’s stated concentration limit of 0.01 PPB (detection limit); and assumed that there was no mixing from other dye masses released prior to and from deeper depths inside the well. The AT600 detected rhodamine concentrations ranged from 0.3-110 PPB during the survey. Depth-Dependent Water Sampling A total of ten depth-dependent samples (including a duplicate) were collected from 45 to 125 Ft. BGS by using a small double-valve, gas-displacement pump called the Panacea-200 (P200) which was developed by BESST. The P200 system has two modes of operation; the first mode is the “Fast Purge Mode” (FPM), and the second mode is the “Ratchet Mode” (RM). The FPM is performed twice at each sample depth. The first purge cycle removes residual groundwater from the previous sampling depth, and the second cycle removes groundwater refilling the tubing from the new depth. The second cycle washes the tubing internally with water from the depth to be sampled and ensures that samples are representative of their corresponding depths. Groundwater samples were then collected with the RM because the contaminants of concern are volatiles. The P200 pump is operated by cycling compressed gas between on and off positions. The P200 pump consists of a PVC chamber that contains a foot-valve and a sample-line return valve. The foot-valve allows groundwater inside the well bore to flow into the ceramic bottom of the pump via head pressure from 9 the well’s water column and fill both the gas-in line and the sample-return line simultaneously. Both lines are made from High-Density Polyethylene (HDPE) tubing, and they run in parallel to each other inside a jacketed HDPE tubing with a safety support cable that is connected to the top of the pump. At the surface, the gas-in line is connected to a compressed gas source (nitrogen) and a two-way valve which is opened and closed to cycle the pump between refill and pumping modes. When compressed gas is released from the source, the gas flows into the gas-in line and translates pneumatic pressure to hydraulic pressure that is applied to the foot valve. The foot-valve closes in response to this pressure and the water inside the gas-in line is forced to make a U-turn inside the pump, pushing the water already inside the sample line back to the surface. One purge cycle is completed when entire water in both the gas-in and sample-return line is purged from the tubing two times – which completes two purge cycles. The third and additional cycles are then used to fill sample bottles from each sample depth. Groundwater flowing through the sample-return line exits in a continuous stream of water as bottles are being filled. As the sample line begins to stiffen near the end of each cycle, the tubing is moved away from the sample bottle and positioned over a waste-water bucket; where the remaining volume is discharged and the gas pressure inside the line is allowed to bleed off after the two-way valve is closed. With the gas pressure turned off, the gas-in and sample-return line can simultaneously recharge with groundwater again. The cycle is repeated as many times as necessary to fill all the required sample bottles. As a QAQC measure, a duplicate sample was collected at 115 Ft. BGS for the purposes of evaluating the variability in analytical methods. To maximize available volume, the duplicate sample was collected immediately following the collection of the primary sample from that depth. In addition, an equipment blank sample was collected to assess the adequacy of the decontamination process following the completion of downhole sampling, and after that the downhole equipment was retrieved and the P200 pump was rinsed with diluted bleach water to decontaminate the equipment. Once the pump was cleaned, deionized (D.I.) water was poured over the body of the pump and the intake filter. The D.I water was then captured in sample containers to analyze for TDS and PFAS. A field blank sample was also collected at the end of the downhole sampling to assess contamination from field conditions during sampling by pouring analyte free water into a container in the field. Ambient Flow Calculations Post-field groundwater flow calculations can either use the first detection or center of mass method for calculating in-well velocities. The first detection method was used for the San Luis Ranch tracer survey (as well as all other ambient flow profiles) since it provides the most reliable results when mapping extremely low velocities in wells. The variables and the algebraic formulas used in the ambient flow calculations are presented below. Table 1: Calculation variables. 𝑣𝑎 Average borehole velocity (Feet / Minute) 𝑄𝑖 𝑎 Zonal inflow/outflow (GPM) 𝑄𝑖 𝑎𝑖 Inferred zonal outflow (GPM) 𝑄𝑐 Cumulative well discharge (GPM) 10 𝑑 Depth (𝐿) 𝑑𝑚 Tracer detection depth (Ft. BGS) 𝑑𝑇 Dye tracer pulse injection depth (Ft. BGS) 𝑡 Time (minutes) 𝑡𝑚 Tracer arrival time (minutes) 𝑡𝑇 Tracer pulse injection time (minutes) �ℎ Depth interval 𝑟𝑖 Average borehole radius over the depth interval, (inches) Travel Time (Minutes): The travel time (t) results from subtracting the tracer arrival time (𝑡𝑚) at the fluorometer from the tracer injection depth (𝑡𝑇). 1. 𝑡= 𝑡𝑚−𝑡𝑇 Average Velocity (Ft./min): The velocity (𝑣𝑎) at injection depth “d” results from dividing the distance traveled of the dye tracer (from injection depth to sensor detection depth) over the travel time. 1. 𝑣𝑐 𝑎=𝑐𝑚−𝑐𝑇 𝑡𝑚−𝑡𝑇 Borehole Cumulative Flow (GPM): The cumulative flow rate (𝑄𝑖 𝑎) is equal to the average velocity (𝑣𝑐 𝑎) times the well cross-sectional area (𝜋𝑟𝑖 2 ). The velocity, expressed as feet per minute (Ft./Min), was multiplied by a conversion factor of 7.48 GPM per Ft3 to arrive at the GPM unit portrayed for the borehole and zonal flow rates. 2. 𝑄𝑖 𝑐=𝑣𝑖 𝑎𝜋𝑟𝑖 2 Average Zonal Flow Contribution (GPM): The center of mass and the continuity equation calculations expressed above multiply the velocity of the fluid by the cross-sectional area of the well to determine the cumulative flow of groundwater travelling past the sensor. In each case, the difference in sequentially paired cumulative flows yields the zonal inflow or outflow between depth-sequential pairs of injection depths (Qia), with results reported in gallons per minute (GPM). However, the outflow contribution from the casing bottom (Qiai) into the uncased section of the well (244’ to 247’ BGS) was inferred (not measured) as a means of reaching a zero -difference in volume between total inflow and outflow. 3. 𝑄𝑖 𝑎=𝑄𝑖 𝑐−𝑄𝑖−1 𝑐 4. 𝑄𝑖 𝑎𝑖= −∑𝑄𝑖 𝑎 11 Flow Data Confidence Criteria 1) Flow sensor resolution: The sensor resolutions detailed below in Table 2 were used to evaluate the velocity and borehole flow data measured at each investigated depth. The equipment limitation is based on the observed dye movement limited by the operation of the dye sensor. The reporting limit (RL) reflects the time allowance used to estimate the dye movement relative to the sensor; in which the field team waited 15 minutes for the dye cloud to travel 5 ft. between the injector depth and the sensor depth. After this point, the field team would move the dye sensor to detect the dye cloud. Due to the expected dispersion of the dye within the well bore, dye travel estimates less than 1 ft from the original injection depth at or after the 15-minute wait period were considered stationary. Table 2: Dye sensor resolution for borehole flow rate measurement. Sensor Resolution for Measured Borehole Flow Rates* Borehole Diameter Method Detection Limit (MDL) Reporting Limit (RL) Inches Ft./Min GPM Ft./Min. GPM 20 0.01 1.6 0.5 8.2 18 0.01 1.3 0.5 6.6 16 0.01 1.0 0.5 5.2 14 0.01 0.8 0.5 4.0 12 0.01 0.6 0.5 2.9 10 0.01 0.4 0.5 2.0 8 0.01 0.3 0.5 1.3 Poor assigned to values below the DL. Fair assigned to values detected between DL and RL. High assigned to values detected above the RL. Velocity rating is calculated from the travel time field limitation of 5 ft/15 min. Borehole flow rating is the velocity rating times the well’s cross-sectional area and Ft3 to GPM conversion (7.48). The red line applies to the Pacific Beach Well. * Does not apply to zonal flow rates. Ambient Concentration Profiling Calculations Water chemistry analyses of TDS and VOCs were performed by BSK Analytical Laboratories, and PFAS analyses was performed by Eurofins Laboratories. The Table 4 below presents the detected and non- detected analytes from the lab results. 12 Table 3: Laboratory chemical analytes. Detected Analytes Non-Detect Analytes Total Dissolved Solids (TDS) (mg/L) 1,1,1-Trichloroethane Perfluorobutanesulfonic acid (PFBS) 1,1,2,2-Tetrachloroethane 1,1,2-Trichloro-1,2,2- trifluoroethane 1,1,2-Trichloroethane 1,1-Dichloroethane 1,1-Diclhloroethene 1,2,4-Trichlorobenzene 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,4-Dichlorobenzene Benzene Carbon Tetrachloride Chlorobenzene Cis-1,2-Dichloroethene Cis-1,3-Dichloropropene Dichloromethane Ethylbenzene m.p-Xylenes Methyl-t-butyl ether o-Xylene Styrene Tetrachloroethene (PCE) Toluene Trans-1,2-Dichloroethene Trans-1,3-Dichloropropene Trichloroethene (TCE) Trichlorofluoromethane Vinyl Chloride Total 1,3-Dichloropropene Total Xylenes 11-chloroeicosafluoro- 3oxaundecane-sulfonic acid 4,8-dioxa-3H-perfluorononanoic acid (ADONA) 9-chlorohexadecafluoro-3- oxanone-sulfonic acid Hexafluoropropylene oxide dimer acid (HFPO-DA) 13 N-ethyl Perfluorooctanesulfonamidoacetic acid N-methyl Perfluorooctanesulfonamidoacetic acid Perfluorodecanoic acid (PFDA) Perfluorododecanoic acid (PFDoA) Perfluoroheptanoic acid (PFHpA) Perfluorohexanesulfonic acid (PFHxS) Perfluorohexanoic acid (PFHxA) Perfluorononanoic acid (PFNA) Perfluorooctanesulfonic acid (PFOS) Perfluorooctanoic acid (PFOA) Perfluorotetradecanoic acid (PFTA) Perfluorotridecanoic acid (PFTrDA) Perfluoroundecanoic acid (PFUnA) BOLD analytes are presented in the chemical mass balance results. All analytes are reported in ug/L, except for TDS Of all the analytes listed, this report focuses only on the findings of concentration distributions for Perfluorobutanesulfonic acid (PFBS) and total dissolved solids (TDS). Only concentrations of these analytes from sequential inflow zones can be flow-weighted to transform cumulative (lab) concentrations that were measured inside the pipe (well) to mass balance estimates of zonal concentrations outside the pipe within the surrounding formation. Outflow zones are treated differently in that laboratory analytical results represent concentrations of each contaminant inside the well and assumes that there are no external contributions of volume and chemistry from the surrounding formations. Consequently, there are no flow-weighted calculations to estimate the formation chemistry for each interval surrounding the well. The mass balance calculation applied to the zonal inflow chemistry is defined below. Chemical Mass Balance 1. 𝐼𝑑 𝑄𝑐>0 𝑡�𝑑𝑛: 𝐶𝑖 𝑎=𝑄𝑖 𝑐𝐶𝑐1 𝑐−𝑄𝑖−1 𝑐𝐶𝑐2 𝑐 𝑄𝑖 𝑎 2. 𝐼𝑑 𝑄𝑐<0 𝑡�𝑑𝑛:𝐶𝑖 𝑎=𝐶𝑐1 𝑐 14 Results Pacific Beach Well Ambient Flow and Chemistry Overview The results from the ambient flow survey indicated the volumetric rate of flow within each investigated depth interval to be less than 1 GPM. Moreover, each dye tracer injection remained within 1 ft of the injection site over a 15-minute duration and thus, the water movement was considered as near stationary. As a result, there is no predominant flow direction and flow results are labeled with a (J) to signify dye movement is close to the detection and reporting limit of the technology. The results from the ambient groundwater sampling showed no detection of the contaminants of concern, PCE and TCE. Perfluorobutanesulfonic acid (PFBS) was detected above the minimum reporting limit, but the distribution of PFBS and zonal flow with depth showed no obvious trend other than it being equally ubiquitous throughout the well and the surrounding formation. The only zonal interval that could be mass balanced is from 105 to 115 Ft. BGS. The reason for this is twofold as there are two technical requirements. First, only inflow chemistry can be mass balanced and second, there must be two depth sequential cumulative inflow values paired with two depth sequential lab concentration values to calculate a mass balanced estimate of the analyte’s concentration within the surrounding formation interval. The mass balanced result for 105 to 115 Ft. BGS show no apparent change in flow weighted concentrations from the laboratory results. The QAQC chemistry results from the field blank for TDS was registered as non-detect and the equipment blank registered a 0.0022 ug/L concentration of Perfluorohexanoic acid (PFHxA). The minimum risk level for PFHxA is 0.0020 ug/L. 15 Zonal Flow Results Figure 3: Ambient borehole velocity vs. depth Figure 4: Ambient cumulative borehole flow rate vs. depth. “J” values indicate that the measured result was observed between the reporting and method detection limit for the instrumentation (sensor). 16 Figure 5: Ambient zonal flow contributions and losses vs. depth. “J” values indicate that the measured result was observed between the reporting and method detection limit for the instrumentation (sensor). 17 Zonal Chemistry Results Figure 7: Mass Balanced TDS and zonal flow contribution plotted. Figure 6: Ambient Mass Balanced TDS with zonal flow vs. depth. NMB - Not Mass Balanced, MB - Mass Balance. Figure 7: Ambient Mass Balanced PFBS with zonal flow vs. depth. NMB - Not Mass Balanced, MB - Mass Balanced. 18 Summary and Conclusions Ambient velocity results for the Pacific Beach Well are in the velocity range between stationary and the reporting limit of the technology. This means that groundwater is moving so slowly, that obtaining a precise measurement of velocity is difficult and at the lower limits of detection. With that said, we can at least say that there is a mixed directional movement of groundwater in the well that is difficult to quantify. The slow movement of groundwater is likely related to the surrounding geology being tight, in line with sediments that are dominated by clay and silt sized particles. However, no lithology log was provided so this determination cannot be verified. In addition, there are other factors to consider such as biofouling and sediment clogging of the well screen. Another hypothesis to consider is somewhat nuanced and possibly additive to the more common explanations explained above. This concept derives from the ambient chemistry survey where there were detected concentrations of PFBS throughout the water column inside the well. PFBS is an acid with surfactant physical properties that can behave as a binding agent in sediments and water (MDH 2017). The binding properties can occur between liquids, like oil and water and or with liquids and solids. This concept is somewhat analogous to the use of small concentrations of dispersants to break up drilling fluids during well development, where these chemicals act as coating agents around clay particles in the drilling mud. Thus, the presence of PFBS in the surrounding formations could be affecting the transport properties of groundwater throughout the well. Recommendations The recommendations considered for the Pacific Beach Well is to perform a dynamic flow and chemistry survey with the existing pump in order to substantiate the zonal distributions of flow and chemistry within the well under pumping conditions. A dynamic survey is useful in hydraulically engaging the surrounding formation and therefore, recommended to establish a better understanding of the well hydraulics and formational flow and chemistry. With the existing results it is not reasonable to consider any well modifications at this moment. According to the Minnesota Department of Health, traditional remediation strategies for PFBS are reverse osmosis or activated carbon treatment systems. Further remediation strategies for PFBS can be found in a study “PFAS and their substitutes in groundwater: Occurrence, transformation, and remediation” (Xu 2021). 19 REFERENCES California Water Boards (2021). PFBS Notification Level Issuance. Retrieved October 14, 2021, from https://www.waterboards.ca.gov/drinking_water/programs/documents/pfbs_nl_issuance_03052021_fi nal_signed.pdf. Minnesota Department of Health (MDH) (2017). PFBS and Drinking Water. Retrieved October 14, 2021, from https://www.health.state.mn.us/communities/environment/risk/docs/guidance/gw/pfbsinfo.pdf. National Center for Biotechnology Information (2021). PubChem Compound Summary for CID 67815, Perfluorobutanesulfonic-acid. Retrieved October 14, 2021, from https://pubchem.ncbi.nlm.nih.gov/compound/Perfluorobutanesulfonic-acid. Bentuo Xu., et al., 2021. PFAS and their substitutes in groundwater: Occurrence, transformation and remediation, Journal of Hazardous Materials, Volume 412, 125159, ISSN 0304-3894, https://www.sciencedirect.com/science/article/pii/S0304389421001229. Gossell, M. A., Nishikawa, T., Hanson, R. T., Izbicki, J. A., Tabidian, M. A., Bertine, K., 1999. Application of Flowmeter and Depth-Dependent Water Quality Data for Improved Production Well Construction. Groundwater. Vol. 37 (5), p. 729-735. Izbicki, J. A., 2004. A Small Diameter Sample Pump for Collection of Depth-Dependent Samples from Production Wells Under Pumping Conditions. U.S. Geological Survey Fact Sheet 2004-3096. Smolen, James J., 1996. Cased Hole and Production Log Evaluation, pages 269-293, PenWell Publishing Company. 20 APPENDICES Appendix A: Wellhead Photos Image 1. Pacific Beach wellhead. Image 2. Open hole to Pacific Beach Well. 21 Appendix B: Injection and sampling plan (ISP) for Pacific Beach Well 22 Appendix C: Ambient Flow Results Sensor Depth Injection Depth Detected Depth First Detection Travel Time Flow Direction Borehole Velocity Cumulative Borehole Flow Zonal Flow Rate Inflow Outflow Depth Interval Ft. BGS Ft. BGS Ft. BGS mm:ss Ft/Min GPM GPM Ft. BGS 0.00 0.00 -0.18 40-45 40 45 44.3 15:26 Up 0.045 0.18 0.33 0.33 45-55 50 55 55.6 16:22 Down 0.037 0.15 -0.27 -0.27 55-65 60 65 64.5 17:39 Up 0.028 0.12 0.07 0.07 65-75 70 75 74.8 15:40 Up 0.013 0.05 0.13 0.12 75-92 87 92 92.4 22:15 Down 0.018 0.07 -0.20 -0.20 92-95 100 95 94.5 15:43 Up 0.032 0.13 0.26 0.26 95-105 110 105 105.5 15:53 Down 0.031 0.13 0.27 0.27 105-115 120 115 116.6 16:19 Down 0.098 0.40 -0.55 -0.55 115-125 130 125 124.4 16:28 Up 0.036 0.15 0.15 0.15 125-130 0.00 0.00 130-133 ∆Zonal Flow 1.20 -1.20 23 Appendix D: Laboratory Chemistry Results Sample DepthDepth IntervalTotal Dissolved Solids (TDS)Perfluorobutanesulfonic acid (PFBS)Ft. BGS Ft. BGS mg/L ug/L 5.0 0.002 500 N/A 1000 N/A N/A 5 N/A 0.5 45 45-55 540.0 0.0034 55 55-65 550.0 0.0035 65 65-75 540.0 0.0035 75 75-85 530.0 0.0035 85 85-95 530.0 0.0035 95 95-105 540.0 0.0034 105 105-115 520.0 0.0033 115 115-125 530.0 0.0034 125 125-130 510.0 0.0034 Secondary MCL Response Level Notification Level Maximum Contaminant Level (MCL) Reporting Limit Laboratory Chemistry 24 Appendix E: Mass Balance Results Sample DepthDepth IntervalTotal Dissolved Solids (TDS)Perfluorobutanesulfonic acid (PFBS)Ft. BGS Ft. BGS mg/L ug/L 5.0 0.002 500 N/A 1000 N/A N/A 5 N/A 0.5 45 45-55 NMB 540.0 0.0034 55 55-65 NMB -550.0 -0.0035 65 65-75 NMB 540.0 0.0035 75 75-85 NMB 530.0 0.0035 85 85-95 NMB -530.0 -0.0035 95 95-105 NMB 540.0 0.0034 105 105-115 MB 537.7 0.0035 115 115-125 NMB -530.0 -0.0034 125 125-130 NMB 510.0 0.0034 NMB - Not Mass Balanced, MB - Mass Balanced Secondary MCL Response Level Notification Level Depth Mass Balance Analytes Reporting Limit Maximum Contaminant Level (MCL) 1 Ambient Flow and Chemistry Profile for San Luis Obispo San Luis Ranch (SLR) Well Published Date: 1 1/0 8 /2021 Profiled Date: 8/18/2021-8/26/2021 Revised Date: 11/23/21 Prepared By: Dominic Eslamian (Project Hydrogeologist) Reviewed By: Kim Miles (Senior Hydrogeologist), Miles Kohler (Field Operations Manager), M. Deniz Turan (Report Review Manager, PhD . Hydrogeology), Noah Heller (President and CEO, MSc., PG, CA 5792) 2 Table of Contents List of Figures ................................................................................................................................................ 3 List of Tables ................................................................................................................................................. 3 Introduction .................................................................................................................................................. 4 Background ................................................................................................................................................... 4 Site Recon and Well Characterization ....................................................................................................... 4 Methodology ................................................................................................................................................. 7 Ambient Flow Survey Field Procedure: .................................................................................................. 7 Depth-Dependent Water Sampling ....................................................................................................... 8 Ambient Flow Calculations ....................................................................................................................... 9 Flow Data Confidence Criteria ................................................................................................................ 11 1) Flow sensor resolution: .............................................................................................................. 11 Ambient Concentration Profiling Calculations ........................................................................................ 11 Results ......................................................................................................................................................... 13 San Luis Ranch Well Ambient Flow and Chemistry Overview ................................................................ 13 Ambient Zonal Flow Results .................................................................................................................... 14 Zonal Chemistry Results .......................................................................................................................... 16 Summary and Conclusions .......................................................................................................................... 20 Recommendations ...................................................................................................................................... 20 REFERENCES ................................................................................................................................................ 21 APPENDICES ................................................................................................................................................ 22 Appendix A: Well Site Photos ................................................................................................................. 22 Appendix B: Video Survey for San Luis Ranch Well ................................................................................ 23 Appendix C: Injection and sampling plan (ISP) for San Luis Ranch Well ................................................. 25 Appendix D: Ambient Flow Results ......................................................................................................... 26 Appendix E: Laboratory Chemistry Results ............................................................................................. 27 3 List of Figures Figure 1: Satellite image of San Luis Ranch Well (highlighted in red) on San Luis Ranch near Dalidio Dr. and Froom Ranch Way in San Luis Obispo, CA………………………………………………………………………………………………...5 Figure 2: SLR Well Construction Diagram………………………………………………………………………………………………….6 Figure 3: Ambient borehole velocity vs. depth………………………………………………………………………………………..14 Figure 4: Ambient cumulative borehole flow rate vs. depth……………………………………………………………………15 Figure 5: Ambient zonal flow contributions vs. depth…………………………………………………………………………...15 Figure 6: Ambient mass balanced chemistry of TDS with zonal flow by depth……………………………………….16 Figure 7: Ambient mass balanced chemistry of PCE with zonal flow by depth……………….…..………………….16 Figure 8: Ambient mass balanced chemistry of PFHpA with zonal flow by depth……………………………………..17 Figure 9: Ambient mass balanced chemistry of PFHxS with zonal flow by depth…………………………………..17 Figure 10: Ambient mass balanced chemistry of PFHxA with zonal flow by depth……………………………………18 Figure 11: Ambient mass balanced chemistry of PFNA with zonal flow by depth…………………………………18 Figure 12: Ambient mass balanced chemistry of PFOA with zonal flow by depth……………………………………19 Figure 13: Ambient mass balanced chemistry of PFOS with zonal flow by depth…………………………………….19 List of Tables Table 1: Calculation variables. ...................................................................................................................... 9 Table 2: Dye sensor resolution for borehole flow rate measurement. ...................................................... 11 Table 3: Laboratory chemical analytes…………………………………………………………………………………………………..12 4 Introduction From August 18, 2021, to August 19, 2021, BESST, Inc. (BESST) surveyed the San Luis Ranch Well (SLR Well), located in San Luis Obispo, CA, for Water Systems Consulting (WSC) to generate an ambient flow and water quality profile. The purpose of this profiling investigation was to determine vertical zonal flow contributions and zonal mass-balanced chemical distributions under steady-state non-pumping conditions. Ambient profiles, particularly assist in defining the natural groundwater pathways and spatial migration of contaminant plumes, as well as quantifying the transport time of those contaminant plumes. The major contaminants of concern in this study were per- and polyfluoroalkyl (PFAS) substances, Total Dissolved Solids (TDS), and Volatile Organic Compounds (VOCs) namely Tetrachloroethene (PCE) and Trichloroethene (TCE). The ambient survey in this study was performed using a technology called Tracer Pulse Ambient Flowmeter (T-PAF) to estimate native zonal flow contributions along the screen of SLR Well from 30 to 60 feet below ground surface (Ft. BGS). After the flow velocity measurements were taken, groundwater samples were collected at the same depths the flow measurements were made. The ambient water quality sampling was performed using the Panacea-200 pump technology. The low flow sampling technique called “ratcheting” was used to collect four water samples. Groundwater samples of TDS and VOCs were analyzed by BSK Analytical Laboratories in Fresno, CA and PFAS by Eurofins Laboratories in Monrovia, CA. The details of the field work and site specifications relevant to the data collection as well as the field procedures and the data evaluation criteria used in ambient flow and chemistry profiling of San Luis Ranch Well are provided in the Methodology section. Analyses of well characterization, flow and chemistry data are presented in the Results section. The implications of the results are evaluated in the Summary and Conclusions section. Wellhead photos taken on the day of field work are included in Appendix A. Screen captures from the video survey that was conducted on August 19, 2021, is attached in Appendix B. The injection and sampling plan (ISP) prepared prior to field work is attached in Appendix C. Details of flow calculations and laboratory results are included in Appendix D and E, respectively. Background Site Recon and Well Characterization The San Luis Ranch Well is located at 35° 15’28” N, 120° 40’28” W, next to Dalidio Drive and Froom Ranch Way, in San Luis Obispo, CA (Figure 1). The well site is in the northeastern corner of San Luis Ranch farm, parallel to Highway 101. Prior to the flow and chemistry survey, the well pump was removed on August 17, 2021, to avoid any interference with the ambient survey and to achieve full access into the well casing. The ambient flow and chemistry investigation for SLR Well began with a review of the well construction provided by WSC and devising a customized ISP. The well casing was initially reported as a 12-inch outer diameter (OD), but, following site recon, the OD was determined to be 16-inches. In addition, the initial 5 well construction details provided convey one perforated screen section from 30 to 60 Ft. BGS, however, the video survey conducted on August 19, 2021, revealed that the SLR Well was screened from 23.2-70.7 Ft. BGS and reached a total depth of 71.6 Ft. BGS (Figure 2). Figure 1: Satellite image of San Luis Ranch Well (highlighted in red) on San Luis Ranch near Dalidio Dr. and Froom Ranch Way in San Luis Obispo, CA. 6 Figure 2: SLR Well Construction. 7 Methodology Ambient Flow Survey Field Procedure: In order to collect the flow and chemistry data, a suite of technologies was utilized during the field work such as: 1) a tracer injection system that was originally developed by the USGS (Gossell, 1999) combined with a downhole fluorometer for measuring tracer velocities; 2) a small sampling pump (Panacea 200 – P200) for collecting depth-dependent groundwater samples that were co-located at each injection depth; 3) a volume booster for increasing the amount of water intake into the sampling pump; 4) a groundwater level meter to periodically measure static water level inside the well contemporaneously with the flow and water sampling surveys. The ambient flow survey in San Luis Ranch Well started with taking static water level measurements. These data and other observations of field conditions were manually recorded in a field notebook. In preparation for the downhole ambient flow survey, the fluorometer (In-Situ Aqua Troll 600 – AT600) was conjoined with the tracer injection tubing; the tracer injection nozzle being positioned exactly four point one (4.1)-feet above the AT600. The tracer used in the investigation was rhodamine red FWT 50, which is approved by the National Sanitation Foundation for use in public supply wells and has an NSF 60 rating by the manufacturer. The tracer solution has a specific gravity of 1.035 g/cm 3 and consisted of 10 ml of raw tracer solution to every 1 gallon of water. The solution was prepared in a 5-gallon container prior to downhole deployment of the injection/detection system, mixing 5 gallons of tap water with 50 ml of raw tracer concentrate drawn and measured with a syringe. The injection apparatus consisted of an electronically controlled hydraulic system that was loaded with the tracer prior to downhole deployment. When the injection system was turned on, the solution that was prepared inside the 5-gallon container was siphoned into the circulatory system of the profiling rig. When injecting, the circulating dye solution is then pumped through the injection tubing at high pressure until it eventually exited the injection nozzle located at the end of the tubing. It was critical that no air bubbles existed in the fully loaded tubing since the compressibility of the bubbles could affect the tracer release time and the flow velocity rates inside the well. Since the tracer tubing was translucent, it was relatively easy to spot air bubbles in the tubing, and if any were spotted, the tracer was purged from t he tubing and reloaded into the tubing until no air bubbles were observed. Following preparation of the injection apparatus, the conjoined system was lowered into the well through a mechanical counter that measured footage to a precision of 1-inch. The depth location of the injection nozzle was first identified by the mechanical counter. The depth of the AT600 sensor array was calculated by adding or subtracting the exact distance from the injector nozzle to the sensor depending on the orientation of the conjoined system. The readings from the AT600 were reported in the downloaded VuSitu data file. The ambient flow survey, based on the ISP, included injecting rhodamine tracer at four discrete depths as shown in Appendix D. The strategy employed at the start of the flow survey on August 18, 2021, was to select a starting position of the AT600, that being above or below the injection nozzle. Based on the limited data about the well, the decision on which position to try first was arbitrary – and it was decided to first locate the sensor 4.1-feet below the tracer injection nozzle, based on the presumption of a downward flow gradient and that dye-tracer would move towards the sensor. Furthermore, it was determined to 8 begin the flow profile near the bottom of the well at 55 Ft. BGS and then move upward towards static water level at 18 Ft. BGS in the direction opposite of presumed groundwater movement. After the injection measurement at 55 Ft. BGS, in-field observations of the dye-tracer detection and its movement revealed a slow-moving upward flow gradient. Thus, the AT600 was re-oriented to exactly 3.5- feet above the injection nozzle. This injection nozzle and sensor orientation was decided as more favorable in an attempt to capture the dye tracer as it moved upwards; and the approach to the flow profile was adapted to continue the dye-tracer injections from the top of the screen and move downwards against the direction of flow. This technique prevented interference from previous depth measurements that could potentially cause false detections. All depth-dependent borehole data, including tracer detection, and other groundwater parameters were recorded electronically in real time using the VuSitu software. Tracer detection measurements were also recorded manually on paper as a backup plan if the electronic data files got corrupt or lost. At each depth location, approximately, 20 ml of tracer was released sideways (patent) through four small holes, each measuring 0.13 inches in diameter, which are spaced 90 degrees apart from each other. The sideways tracer stream is gentle in each direction to avoid rebound effects against the interior casing wall of the well that can affect the measured velocities. The sideways injection is essential so as not to bias velocity measurements by downward injection. Downhole, the AT600 measured the dye concentration every 1 second during the flow survey. The maximum wait-time for sensor detection at each injection depth was 15-minutes based on project time constraints. If the tracer was detected within this time span, the Center of Mass method (described below) was used to calculate the flow rate. If the tracer did not reach the detector within this time span, the sensor array was moved slowly upward or downward to find the tracer cloud (Smolen, 1997). For this situation, the first detection of the tracer cloud was used to calculate the flow rate. The dye mass at any depth during the survey was identifiable above the manufacturer’s stated concentration limit of 0.01 PPB (detection limit); and assumed that there was no mixing from other dye masses released prior to and from deeper depths inside the well. The AT600 detected rhodamine concentrations ranged from 0.01-35.0 PPB during the survey. Depth-Dependent Water Sampling A total of four depth-dependent samples (including a duplicate) were collected at 50, 45, and 35 Ft. BGS using a small double-valve, gas-displacement pump called the Panacea-200 (P200) which was developed by BESST. The P200 system has two modes of operation; the first mode is the “Fast Purge Mode” (FPM), and the second mode is the “Ratchet Mode” (RM). The FPM is performed twice at each sample depth. The first purge cycle removes residual groundwater from the previous sampling depth, and the second cycle removes groundwater refilling the tubing from the new depth. The second cycle washes the tubing internally with water from the depth to be sampled and ensures that samples are representative of their corresponding depths. Groundwater samples were then collected with the RM because the contaminants of concern were volatiles. The P200 pump is operated by cycling compressed gas between on and off positions. The P200 pump consists of a PVC chamber that contains a foot-valve and a sample-line return valve. The foot-valve allows groundwater inside the well bore to flow into the bottom of the pump via head pressure from the well’s water column and fill both the gas-in line and the sample-return line simultaneously. Both lines are made from High-Density Polyethylene (HDPE) tubing, and they run in parallel to each other inside a jacketed 9 HPDE tubing with a safety support cable that is connected to the top of the pump. At the surface, the gas- in line is connected to a compressed gas source (nitrogen) and a two-way valve which is opened and closed to cycle the pump between refill and pumping modes. When compressed gas is released from the source, the gas flows into the gas-in line and translates pneumatic pressure to hydraulic pressure that is applied to the foot valve. The foot-valve closes in response to this pressure and the water inside the gas-in line is forced to make a U-turn inside the pump, pushing the water already inside the sample line back to the surface. One purge cycle is completed when entire water in both the gas-in and sample-return line is purged from the tubing two times – which completes two purge cycles. The third and additional cycles are then used to fill sample bottles from each sample depth. Groundwater flowing through the sample- return line exits in a continuous stream of water as bottles are being filled. As the sample line begins to stiffen near the end of each cycle, the tubing is moved away from the sample bottle and positioned over a waste-water bucket; where the remaining volume is discharged and the gas pressure inside the line is allowed to bleed off after the two-way valve is closed. With the gas pressure turned off, the gas-in and sample-return line can simultaneously recharge with groundwater again. The cycle is repeated as many times as necessary to fill all the required sample bottles. A Volume Booster (VB) was used in conjunction with the ratcheting method to increase the purge and sample volume on each pump stroke. The VB is located in between the P200 Pump and the double line tubing and when used, helps to provide more of a continuous stream of water during the purging and sample-ratchet mode. As a QAQC measure, a duplicate sample was collected at 45 Ft. BGS for the purposes of evaluating the variability in analytical methods. The identification code for this sample was labeled as 46-feet on the sample bottle to avoid letting that lab know that it was a duplicate. To maximize available volume, the duplicate sample was collected immediately following the collection of the primary sample from the 45 Ft. BGS depth. Following the in-field completion of depth-dependent sampling, a residual dye-tracer check was conducted within the SLR Well. The tracer-dye check was performed by deploying the AT600 sensor downhole below static water level to confirm that dye was not lingering from the previous ambient dye- tracer flow survey. Ambient Flow Calculations Post-field groundwater flow calculations can either use the first detection or center of mass method for calculating in-well velocities. The first detection method was used for the San Luis Ranch flow survey (as well as all other ambient flow profiles) since it provides the most reliable results when mapping extremely low velocities in wells. The variables and the algebraic formulas used in the ambient flow calculations are presented below. Table 1: Calculation variables. 𝑣𝑎 Average borehole velocity (Feet / Minute) 𝑄𝑖 𝑎 Zonal inflow/outflow (GPM) 𝑄𝑖 𝑎𝑖 Inferred zonal outflow (GPM) 𝑄𝑐 Cumulative well discharge (GPM) 10 𝑑 Depth (𝐿) 𝑑𝑚 Dye tracer detection depth (Ft. BGS) 𝑑𝑇 Dye tracer pulse injection depth (Ft. BGS) 𝑡 Time (minutes) 𝑡𝑚 Tracer arrival time (minutes) 𝑡𝑇 Tracer pulse injection time (minutes) �ℎ Depth interval 𝑟𝑖 Average borehole radius over the depth interval, (inches) Travel Time (Minutes): The travel time (t) results from subtracting the tracer arrival time (𝑡𝑚) at the fluorometer from the tracer injection depth (𝑡𝑇). 1. 𝑡= 𝑡𝑚−𝑡𝑇 Average Velocity (Ft./min): The velocity (𝑣𝑎) at injection depth “d” results from dividing the distance traveled of the dye tracer (from injection depth to sensor detection depth) over the travel time. 2. 𝑣𝑐 𝑎=𝑐𝑚−𝑐𝑇 𝑡𝑚−𝑡𝑇 Borehole Cumulative Flow (GPM): The cumulative flow rate (𝑄𝑖 𝑎) is equal to the average velocity (𝑣𝑐 𝑎) times the well cross-sectional area (𝜋𝑟𝑖 2 ). The velocity, expressed as feet per minute (Ft./Min), was multiplied by a conversion factor of 7.48 GPM per Ft3 to arrive at the GPM unit portrayed for the borehole and zonal flow rates. 3. 𝑄𝑖 𝑐=𝑣𝑖 𝑎𝜋𝑟𝑖 2 Average Zonal Flow Contribution (GPM): The center of mass and the continuity equation calculations expressed above multiply the velocity of the fluid by the cross-sectional area of the well to determine the cumulative flow of groundwater travelling past the sensor. In each case, the difference in sequentially paired cumulative flows yields the zonal inflow or outflow between depth-sequential pairs of injection depths (Qia), with results reported in gallons per minute (GPM). However, the outflow contribution from the casing bottom (Qiai) into the uncased section of the well (60’ to 70’ BGS) was inferred (not measured) as a means of reaching a zero-difference in volume between total inflow and outflow. 4. 𝑄𝑖 𝑎=𝑄𝑖 𝑐−𝑄𝑖−1 𝑐 5. 𝑄𝑖 𝑎𝑖= −∑𝑄𝑖 𝑎 11 Flow Data Confidence Criteria 1) Flow sensor resolution: The sensor resolutions detailed below in Table 2 were used to evaluate the velocity and borehole flow data measured at each investigated depth. The equipment limitation is based on the observed dye movement limited by the operation of the dye sensor. The reporting limit (RL) reflects the time allowance used to estimate the dye movement relative to the sensor; in which the field team waited 15 minutes for the dye cloud to travel 3.5 Ft. between the injector depth and the sensor depth. After this point, the field team would move the dye sensor to detect the dye cloud. Due to the expected dispersion of the dye within the well bore, dye travel estimates less than 1 Ft from the original injection depth at or after the 15-minuite wait period were considered stationary. Table 2: Dye sensor resolution for borehole flow rate measurement. Sensor Resolution for Measured Borehole Flow Rates* Borehole Diameter Detection Limit (DL) Reporting Limit (RL) Inches Ft./Min GPM Ft./Min. GPM 20 0.01 1.6 0.5 8.2 18 0.01 1.3 0.5 6.6 16 0.01 1.0 0.5 5.2 14 0.01 0.8 0.5 4.0 12 0.01 0.6 0.5 2.9 10 0.01 0.4 0.5 2.0 8 0.01 0.3 0.5 1.3 Poor assigned to values below the DL. Fair assigned to values detected between DL and RL. High assigned to values detected above the RL. Velocity rating is calculated from the travel time field limitation of 5 ft/15 min. Borehole flow rating is the velocity rating times the well’s cross-sectional area and Ft3 to GPM conversion (7.48). The red line applies to the San Luis Ranch Well. * Does not apply to zonal flow rates. Ambient Concentration Profiling Calculations Water chemistry analyses of TDS and VOCs were performed by BSK Analytical Laboratories, and PFAS analyses was performed by Eurofins Laboratories. The Table 4 below presents the detected and non- detected analytes from the lab results. 12 Table 3: Laboratory chemical analytes. Detected Analytes Non-Detect Analytes Total Dissolved Solids (TDS) (mg/L) 1,1,1-Trichloroethane Tetrachloroethene (PCE) 1,1,2,2-Tetrachloroethane Perfluorobutanesulfonic acid (PFBS) 1,1,2-Trichloro-1,2,2- trifluoroethane Perfluoroheptanoic acid (PFHpA) 1,1,2-Trichloroethane Perfluorohexanesulfonic acid (PFHxS) 1,1-Dichloroethane Perfluorohexanoic acid (PFHxA) 1,1-Dichloroethene Perfluorononanoic acid (PFNA) 1,2,4-Trichlorobenzene Perfluorooctanesulfonic acid (PFOS) 1,2-Dichlorobenzene Perfluorooctanoic acid (PFOA) 1,2-Dichloroethane 1,2-Dichloropropane 1,4-Dichlorobenzene Benzene Carbon Tetrachloride Chlorobenzene Cis-1,2-Dichloroethene Cis-1,3-Dichloropropene Dichloromethane Ethylbenzene m, p-Xylenes Methyl-t-butyl ether o-Xylene Styrene Toluene Trans-1,2-Dichloroethene Trans-1,3-Dichloropropene Trichlorofluoromethane Vinyl Chloride Total 1,3-Dichloropropene Total Xylenes BOLD analytes are featured in the chemical mass balance results. All analytes are reported in ug/L, except for TDS. Of all the analytes listed, this report focuses only on the detected concentration distributions for PCE, PFAS and TDS. Only concentrations of these analytes from sequential inflow zones can be flow-weighted to transform cumulative (lab) concentrations that were measured inside the pipe (well) to mass balance estimates of zonal concentrations outside the pipe. 13 Outflow zones on the other hand are treated differently in that laboratory analytical results represent concentrations of each contaminant inside the well during in-well transport and assumes that there are no external contributions of volume and chemistry from the surrounding formations. Consequently, there are no flow-weighted calculations to estimate the formation chemistry for each interval surrounding the well. The mass balance calculation applied to the zonal inflow chemistry is defined below. Chemical Mass Balance 1. 𝐼𝑑 𝑄𝑐>0 𝑡�𝑑𝑛: 𝐶𝑖 𝑎=𝑄𝑖 𝑐𝐶𝑐1 𝑐−𝑄𝑖−1 𝑐𝐶𝑐2 𝑐 𝑄𝑖 𝑎 2. 𝐼𝑑 𝑄𝑐<0 𝑡�𝑑𝑛:𝐶𝑖 𝑎=𝐶𝑐1 𝑐 Results San Luis Ranch Well Ambient Flow and Chemistry Overview The results from the SLR Well ambient flow survey indicated an upward flow gradient and a volumetric rate of flow ranging from 0 to 7 gallons per minute (GPM). It is estimated that 100% of total cumulative flow derives from 35 to 55 Ft. BGS. This percentage of total cumulative inflow from this interval is a bit uncertain since the screen was actually longer (23 to 70 Ft. BGS) than previously reported (30 to 60 Ft. BGS) and there are no dye tracer measurements from 23 to 30 Ft. BGS and from 60 to 70 Ft. BGS. As a result, the velocity and flow conditions for these depth intervals cannot be quantified and were inferred (*) based on circumstantial evidence from the tracer and video surveys. In addition, these depth intervals (23 to 30 Ft. BGS and 60 to 70 Ft. BGS) are graphically represented with a dashed line and question mark to show its associated uncertainty with the inference. The ambient borehole velocity and cumulative flow versus depth graphs are presented in Figures 3 and 4, respectively. Ambient zonal flow results (Figure 5) indicate that inflow occurs from 35 to 45 Ft. BGS and 50 to 55 Ft. BGS, with the highest inflow zone being 50 – 55 Ft. BGS at 7.2 GPM. Outflow occurs within the depth intervals of 30 – 35 Ft. BGS and 45 – 50 Ft. BGS, with the highest outflow zone being 23 to 35 Ft. BGS (inferred). The results from dye tracer injection at 55 Ft. BGS found that the dye tracer did not reach the sensor within the 15-minute duration, nor found the dye tracer to have moved from its original injection depth when chased after the 15-minute wait period, and thus, the water movement for the depth interval of 55 to 60 Ft. BGS was considered as stationary. The results from the SLR Well ambient chemistry survey found ubiquitous detection of TDS, PCE, and PFAS substances. Overall, these chemical constituents show no obvious trend pattern with depth. Moreover, the chemistry results could not be mass balanced for two main reasons: first, chemistry pertaining to the inflow zones can only be mass balanced and second, to achieve this, there must be two sequential cumulative inflow values that can be paired with two sequential lab concentration values to calculate a mass balanced estimate of the analyte’s concentration within the surrounding formation interval. Thus, the laboratory chemistry was used for presenting chemical distributions with zonal flow contributions vs. depth (Figures 5-12). Furthermore, since the deepest groundwater sample was collected at 50 Ft. BGS, the depth intervals of 50 to 55, 55 to 60, and 60 to 70 Ft. BGS were grouped together to represent chemistry results from 50 to 70 Ft. BGS. Similarly, the chemistry graphs are represented with data flagging 14 notations to signify zonal flow contributions that are inferred (*) and its associated uncertainty (dashed line and question mark). The main contaminant of concern, PCE, is near 4 micrograms per liter (ug/L) at every investigated depth interval – close to the 5 ug/L of maximum contaminant level (MCL). Similarly, there were several PFAS substances ubiquitously detected within the San Luis Ranch Well. Two major PFAS substances of concern that were detected are Perfluorooctanesulfonic Acid (PFOS) and Perfluorooctanoic Acid (PFOA). The PFOA substance exceeds the California response level of 10 PPT (Figures 12) at every investigated depth interval. Ambient Zonal Flow Results Figure 3: Ambient borehole velocity vs. depth. Asterisk (*) signifies inference. Question mark (?) and dashed line shows uncertainty associated with inference due to no dye-tracer measurement. Double Asterisk (**) signifies dye did not move from injection depth, considered stationary water. 15 Figure 5: Ambient cumulative borehole flow rate vs. depth. Asterisk (*) signifies algebraic interpolation. Double Asterisk (**) signifies dye did not move from injection depth, considered stationary water. Flow Direction Up Figure 4: Ambient cumulative borehole flow rate vs. depth. Asterisk (*) signifies inference. Question mark (?) and dashed line shows uncertainty associated with inference due to no dye -tracer measurement. Double Asterisk (**) signifies dye did not move from injection depth, considered stationary water. Figure 5: Ambient zonal flow contributions vs. depth. Asterisk (*) signifies inference. Question mark (?) and dashed line shows uncertainty associated with inference due to no dye-tracer measurement. Double Asterisk (**) signifies dye did not move from injection depth, considered stationary water. 16 Zonal Chemistry Results Figure 6: Ambient San Luis Ranch Well mass balanced chemistry of TDS with zonal flow contributions. Asterisk (*) is to signify inference of zonal flow contribution. Question mark (?) and Dashed line is to represent uncertainty associated with inference. Figure 7: Ambient San Luis Ranch Well mass balanced chemistry of PCE with zonal flow contributions. Asterisk (*) is to signify inference of zonal flow contribution. Question mark (?) and Dashed line is to represent uncertainty associated with inference. Flow Direction Flow Direction Flow Direction 17 Figure 9: Ambient San Luis Ranch Well mass balanced chemistry of PFHxS with zonal flow contributions. Asterisk (*) is to signify inference of zonal flow contribution. Question mark (?) and Dashed line is to represent uncertainty associated with inference. Figure 8: Ambient San Luis Ranch Well mass balanced chemistry of PFHpA with zonal flow contributions. Asterisk (*) is to signify inference of zonal flow contribution. Question mark (?) and Dashed line is to represent uncertainty associated with inference. Flow Direction Flow Direction 18 Flow Direction Flow Direction Figure 10: Ambient San Luis Ranch Well mass balanced chemistry of PFHxA with zonal flow contributions. Asterisk (*) is to signify inference of zonal flow contribution. Question mark (?) and Dashed line is to represent uncertainty associated with inference. Figure 11: Ambient San Luis Ranch Well mass balanced chemistry of PFNA with zonal flow contributions. Asterisk (*) is to signify inference of zonal flow contribution. Question mark (?) and Dashed line is to represent uncertainty associated with inference. 19 Figure 12: Ambient San Luis Ranch Well mass balanced chemistry of PFOA with zonal flow contributions. Asterisk (*) is to signify inference of zonal flow contribution. Question mark (?) and Dashed line is to represent uncertainty associated with inference. Figure 13: Ambient San Luis Ranch Well mass balanced chemistry of PFOA with zonal flow contributions. Asterisk (*) is to signify inference of zonal flow contribution. Question mark (?) and Dashed line is to represent uncertainty associated with inference. 20 Summary and Conclusions Ambient zonal flow results for SLR Well show the highest water yielding interval is from 50 to 55 Ft. BGS at 7.2 GPM. The concentrations of PCE are below the MCL within each depth interval. However, PFOA concentrations, are above the response level and if the well will serve as a drinking supply well, the PFOA concentrations need to be addressed with treatment. Recommendations The video survey (completed after the ambient flow and chemistry survey) found the total well depth and the screen depth was greater than reported, thus, it is recommended to perform a dynamic flow and chemistry survey; particularly so since there is significant, ongoing mass transport through the well. A dynamic survey is useful in hydraulically engaging the surrounding formation and therefore, recommended to establish a better understanding of the well hydraulics and formational flow and chemistry. With the existing results it is not reasonable to consider any well modifications at this moment. In addition, it is recommended to continue monitoring PCE and PFAS levels within the San Luis Ranch Well and to consider treatment and or modification (after dynamic survey) if the well were to return to production. 21 REFERENCES Gossell, M. A., Nishikawa, T., Hanson, R. T., Izbicki, J. A., Tabidian, M. A., Bertine, K., 1999. Application of Flowmeter and Depth-Dependent Water Quality Data for Improved Production Well Construction. Groundwater. Vol. 37 (5), p. 729-735. Izbicki, J. A., 2004. A Small Diameter Sample Pump for Collection of Depth-Dependent Samples from Production Wells Under Pumping Conditions. U.S. Geological Survey Fact Sheet 2004-3096. Smolen, James J., 1996. Cased Hole and Production Log Evaluation, pages 269-293, PenWell Publishing Company. 22 APPENDICES Appendix A: Well Site Photos Image 1: San Luis Ranch Well with line-shaft turbine pump. Image 2: San Luis Ranch Well cap after pump removal. 23 Appendix B: Video Survey for San Luis Ranch Well Image 3: San Luis Ranch Well static water level. Image 3: San Luis Ranch Well static water level. Image 4: San Luis Ranch Well top of screen consisting of vertical perforations (red circle). 24 Image 5: San Luis Ranch Well bottom of screen consisting of vertical perforations (red circle). Image 6: San Luis Ranch Well total depth. 25 Appendix C: Injection and sampling plan (ISP) for San Luis Ranch Well 26 Appendix D: Ambient Flow Results Sensor Depth Injected Depth Detected Depth First Detection Travel Time Flow Direction Borehole Velocity Cumulative Borehole Flow Zonal Flow Rate Inflow Outflow Depth Interval Ft. BGS Ft. BGS Ft. BGS mm:ss Ft/Min GPM GPM Ft. BGS 0.00 -6.04 -6.04 30-35* 31.5 35 31.5 06:03 Up 0.01 6.04 1.63 1.63 35-45 41.5 45 41.5 08:17 Up 0.42 4.41 -2.80 -2.80 45-50 46.5 50 46.5 05:04 Up 0.69 7.21 7.21 7.21 50-55 59.1 55 55 16:05 Stagnant 0.00 0.00 0.00 55-60 0.00 0.00 60-70* ∆Zonal Flow 0.00 8.84 -8.84 *algebraically interpolated 27 Appendix E: Laboratory Chemistry Results Sample DepthDepth IntervalTotal Dissolved Solids (TDS)Tetrachloroethene (PCE)Perfluorobutanesulfonic acid (PFBS)Perfluoroheptanoic acid (PFHpA)Perfluorohexanesulfonic acid (PFHxS)Perfluorohexanoic acid (PFHxA)Perfluorononanoic Acid (PFNA)Perfluorooctanesulfonic Acid (PFOS)Perfluorooctanoic Acid (PFOA)Ft. BGS Ft. BGS mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 1000 5.0 N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.09 0.01 0.03 N/A N/A 0.02 0.02 N/A N/A 5.0 N/A N/A N/A N/A 40 PPT 10 PPT 35 35-45 670.0 3.8 0.015 0.006 0.038 0.009 ND 0.028 0.007 45 45-50 660.0 4.3 0.014 0.006 0.039 0.010 0.002 0.034 0.007 50 50-70 660.0 4.1 0.015 0.007 0.040 0.009 0.003 0.034 0.007 Minimum Reporting Level Response Level Maximum Contaminant Level Laboratory Results Sample Depth 1 Ambient Flow and Chemistry Profile for San Luis Obispo Highway 101 Well Published Date: 1 1 /3 /2021 Profiled Date: 08/04/2021 – 08/06/2021 Revised Date: 11/23/2021 Prepared By: Dominic Eslamian (Project Hydrogeologist) Reviewed By: Kim Miles (Senior Hydrogeologist), Miles Kohler (Field Operations Manager), M. Deniz Turan (Report Review Manager, PhD . Hydrogeology), Noah Heller (President and CEO, MSc., PG, CA 5792) 2 Table of Contents List of Figures ................................................................................................................................................ 3 List of Tables ................................................................................................................................................. 3 Introduction .................................................................................................................................................. 4 Background ................................................................................................................................................... 4 Site Recon and Well Characterization ....................................................................................................... 4 Well History ............................................................................................................................................... 5 Methodology ................................................................................................................................................. 9 Ambient Flow Survey Field Procedure: .................................................................................................. 9 Depth-Dependent Water Sampling ..................................................................................................... 10 Ambient Flow Calculations ..................................................................................................................... 11 Flow Data Confidence Criteria ................................................................................................................ 12 1) Flow sensor resolution: .............................................................................................................. 12 Ambient Concentration Profiling Calculations ........................................................................................ 13 Results ......................................................................................................................................................... 15 Highway 101 Well Ambient Flow and Chemistry Overview ................................................................... 15 Zonal Flow Results .................................................................................................................................. 16 Zonal Chemistry Results .......................................................................................................................... 18 Summary and Conclusions .......................................................................................................................... 20 Recommendations ...................................................................................................................................... 22 REFERENCES ................................................................................................................................................ 22 APPENDICES ................................................................................................................................................ 23 Appendix A: Wellhead Photos ................................................................................................................ 23 Appendix B: Video Survey ....................................................................................................................... 25 Appendix C: Injection and sampling plan (ISP) for Ambient Profiling ..................................................... 29 Appendix D: Ambient Flow Results ......................................................................................................... 30 Appendix E: Laboratory Chemistry Results ............................................................................................. 31 Appendix F: Mass Balance Results .......................................................................................................... 32 Appendix G: Well Completion Report ..................................................................................................... 33 3 List of Figures Figure 1: Map of the Highway 101 Well at the Wastewater Treatment Facility in San Luis Obispo, CA…….5 Figure 2: Well construction diagram of Highway 101 Well (from Cleath & Associates, Inc., 2003)……………7 Figure 3: Lithology log of Highway 101 Well (from Cleath & Associates, Inc., 2003). .................................. 8 Figure 4: Ambient borehole velocity by depth. .......................................................................................... 16 Figure 5: Ambient cumulative borehole flow rate by depth. ..................................................................... 16 Figure 6: Ambient zonal flow contributions by depth. ............................................................................... 17 Figure 7: Ambient mass balanced chemistry of PCE with zonal flow by depth………………………………………. 18 Figure 8: Ambient mass balanced chemistry of PFBS with zonal flow by depth……………….…..……………….. 18 Figure 9: Ambient mass balanced chemistry of PFHpA with zonal flow by depth………………………………….. 19 Figure 10: Ambient mass balanced chemistry of PFHxS with zonal flow by depth…………………………………. 19 Figure 11: Ambient mass balanced chemistry of PFHxA with zonal flow by depth………………………………… 20 Figure 12: Ambient mass balanced chemistry of TDS with zonal flow by depth…………………………………….. 20 Figure 13: Ambient mass balanced chemistry of PFOS with zonal flow by depth………………………………….. 21 Figure 14: Ambient mass balanced chemistry of PFOA with zonal flow by depth………………………………….. 21 List of Tables Table 1: Calculation variables. .................................................................................................................... 11 Table 2: Dye sensor resolution for borehole flow rate measurement. ...................................................... 13 Table 3: Laboratory chemical analytes. ...................................................................................................... 13 4 Introduction From August 4, 2021, through August 6, 2021, BESST, Inc. (BESST) surveyed the Highway 101 Well located in San Luis Obispo, CA, for Water Systems Consulting (WSC) to generate an ambient flow and water quality profile. The purpose of this profiling investigation was to determine vertical zonal flow contributions and zonal mass-balanced chemical distributions under steady-state non-pumping conditions. Ambient profiles, particularly assist in defining the natural groundwater pathways and spatial migration of contaminant plumes, as well as quantifying the transport time of those contaminant plumes. The major contaminants of concern in this study were per- and polyfluoroalkyl substances (PFAS), Total Dissolved Solids (TDS), and Volatile Organic Compounds (VOCs), namely Tetrachloroethene (PCE) and Trichloroethene (TCE). The ambient survey in this study was performed using a technology called Tracer Pulse Ambient Flowmeter (T-PAF) to estimate native zonal flow contributions along the screen of Highway 101 Well from 45 to 85 feet below ground surface (Ft. BGS) and 115 to 135 Ft. BGS. After the flow velocity measurements were taken, groundwater samples were collected at the same depths as the flow measurements were made. The ambient water quality sampling was performed using the HydroBooster pump technology. The low flow sampling technique called “ratcheting” was used to collect nine depth dependent water samples. Groundwater samples of TDS and VOCs were analyzed by BSK Analytical Laboratories in Fresno, CA and PFAS by Eurofins Laboratories in Monrovia, CA. The details of the field work and site specifications relevant to the data collection as well as the field procedures and the data evaluation criteria used in ambient flow and chemistry profiling of the Highway 101 Well are provided in the Methodology section. Analyses of well characterization, flow and chem istry data are presented in the Results section. The implications of the results are evaluated in the Summary and Conclusions section. Wellhead photos taken on the day of field work are included in Appendix A. The video survey that was conducted at Highway 101 Well on August 17, 2021, is attached in Appendix B. The injection and sampling plan (ISP) prepared prior to field work is attached in Appendix C. Details of flow calculations, laboratory results, and mass balance data are included in Appendix D, E and F, respectively. The well completion report is attached in Appendix G. Background Site Recon and Well Characterization The Highway 101 Well is located at 35° 15’02” N and 120° 40’39” W, at the Wastewater Treatment Facility on Prado Road in San Luis Obispo, CA. Below is an aerial image of the well site (Figure 1). 5 Figure 1: Map of the Highway 101 Well at the Wastewater Treatment Facility in San Luis Obispo, CA. The Highway 101 Well borehole was completed in February of 2003 with a diameter of 22 inches and to a total depth of 160 feet below ground surface (Ft. BGS) using a mud rotary drill. The well contains a 12- inch diameter polyvinyl chloride (PVC) well casing to a depth of 145 Ft. BGS and two blank sections of casing from ground surface to 45 Ft. BGS and from 85 to 115 Ft. BGS. In addition, the well has two perforated screens with 0.050-inch slots from 45 to 85 Ft. BGS and 115 to 135 Ft. BGS. Between the well casing and the borehole wall lies a sanitary seal from ground surface to 40 Ft. BGS and a 6x16 gravel pack from 40 to 160 Ft. BGS. Well History After the completion of construction of Highway 101 Well in February 2003, it was put through a series of testing by Cleath-Harris Geologists, Incorporated. On February 14, 2003, a step-rate test was conducted starting with a pumping rate of 300 gallon per minute (GPM), followed by a pumping rate of 405 GPM, and ending at a pumping rate of 508 GPM. The static water level was measured at the start of the step test at a depth to water of 7.6 feet, which had reached a depth to water of 60 feet at the end of step testing. From February 18 to February 21 of 2003, a 24-hour pumping test was conducted with a constant pumping rate of 350 GPM and water levels were recorded using an electronic sounder. Results from the 24-hour pumping test presented a static depth to water of 7.5 feet and delta drawdown of 4 feet per log cycle of time (minutes) for the first period, and a delta drawdown of 1.5 feet per log cycle of time (minutes) for 6 the second period. In conjunction with the 24-hour pumping test, water levels at two nearby ag-wells (used as observation wells), namely, Calle Joaquin Agricultural Reserve (CJAR) Well and Silver City Well were monitored. While the water levels at the Highway 101 Well had reached a depth to water of 40 feet by the end of the 24-hour pumping test, the observation wells’ water levels remained relatively unaffected throughout testing. In 2017, the Highway 101 Well went through another 24-hour pumping test by Cleath and Associates, Inc. The results from this testing were used to calculate well efficiency and aquifer characteristics of transmissivity [L2/T] and storativity [dimensionless] using the Cooper-Jacobs Method. Results from the 2017 calculations presented a well efficiency of 21.5%. Aquifer calculations of transmissivity were estimated to be 60,000 gallons per day per foot. Storativity from the Highway 101 Well to the CJAR and to the Silver City wells were estimated to be 0.0042 and 0.0036, respectively. In addition to the 2017 well tests and calculations of aquifer parameters, Cleath and Associates, Inc. submitted two (grab) water samples to FGL Analytical Chemists Laboratory for water chemistry testing. The water chemistry results returned concentrations of Tetrachloroethylene (PCE) above the 5 ug/L MCL at 9.7 ug/L. The following well diagram (Figure 2) and lithology log (Figure 3) are based on the Well Completion Report provided by Cleath & Associates, Inc. 7 Figure 2: Well construction diagram of Highway 101 Well (from Cleath & Associates, Inc., 2003) 8 Figure 3: Lithology log of Highway 101 Well (from Cleath & Associates, Inc., 2003). 9 Methodology Ambient Flow Survey Field Procedure: In order to collect the flow and chemistry data, a suite of technologies was utilized during the field work such as: 1) a tracer injection system that was originally developed by the USGS (Gossell, 1999) combined with a downhole fluorometer for measuring tracer velocities; 2) a small sampling pump (HydroBooster) for collecting depth-dependent groundwater samples that were co-located at each injection depth; 3) a groundwater level meter to periodically measure static water level inside the well contemporaneously with the flow and water sampling surveys. The ambient flow survey in the Highway 101 Well started with taking static water level measurements. These data and other observations of field conditions were manually recorded in a field notebook. In preparation for the downhole ambient flow survey, the fluorometer (In-Situ Aqua Troll 600 – AT600) was conjoined with the tracer injection tubing; the tracer injection nozzle being positioned exactly five (5)-feet above the rhodamine sensor (the sensor). The tracer used in the investigation was rhodamine red FWT 50, which is approved by the National Sanitation Foundation for use in public supply wells and has an NSF 60 rating by the manufacturer. The tracer solution has a specific gravity of 1.035 g/cm3 and consisted of 10 ml of raw tracer solution to every 1 gallon of water. The solution was prepared in a 5-gallon container prior to downhole deployment of the injection/detection system, mixing 5 gallons of tap water with 50 ml of raw tracer concentrate drawn and measured with a syringe. The injection apparatus consisted of an electronically controlled hydraulic system that was loaded with the tracer prior to downhole deployment. When the injection system was turned on, the solution that was prepared inside the 5-gallon container was siphoned into the circulatory system of the profiling rig, which then pumped the dye into the injection tubing. As the tubing filled, air inside of the tubing was displaced by the tracer, which eventually exited the injection nozzle located at the end of the tubing. It was critical that no air bubbles existed in the fully loaded tubing since the compressibility of the bubbles could affect the tracer release time and the flow velocity rates inside the well. Since the tracer tubing was translucent, it was relatively easy to spot air bubbles in the tubing, and if any were spotted, the tracer was purged from the tubing and reloaded into the tubing until no air bubbles were observed. Following preparation of the injection apparatus, the conjoined system was lowered into the well through a mechanical counter that measured footage to a precision of 0.1 feet. The depth location of the injection nozzle was first identified by the mechanical counter and the depth of the AT600 sensor array was calculated by adding exactly 5-feet to the measured depth of the nozzle. The readings from the AT600 were reported in the downloaded VuSitu data file. The ambient flow survey, based on the ISP, included injecting rhodamine tracer at five discrete depths as shown in Appendix C. The strategy employed during the survey of Highway 101 Well was to begin the flow profile from the well top at 45 Ft. BGS and then move downward. However, the downward movement of groundwater observed at the first injection point (45 Ft. BGS) changed the strategy to move the injections starting from the well bottom at 130 Ft. BGS and continue upwards so that the profile was completed against the natural movement of water within the well. By relocating the sensor to each sequential injection depth in the direction opposite of the groundwater movement, it was assured that the residual 10 tracer from the prior depth always moved away from the sensor. This technique prevented interference from previous deeper measurements that could cause false detections. All depth-dependent borehole data, including tracer detection, and other parameters were recorded electronically in real time using the VuSitu software. Tracer detection measurements were also recorded manually as a backup plan in the event that the electronic data files got corrupt or lost. At each depth location, approximately, 20 ml of tracer was released sideways (patent) through four small holes, each measuring 0.13 inches in diameter, which are spaced 90 degrees apart from each other. The sideways tracer stream is gentle in each direction in order to avoid rebound effects against the interior casing wall of the well that can affect the measured velocities. The sideways injection is essential so as not to bias velocity measurements by downward injection. Downhole, the AT600 measured the dye concentration every 1 seconds during the flow survey. The maximum wait-time for sensor detection at each injection depth was 15-minutes based on project time constraints. If the tracer was detected within this time span, the Center of Mass method (described below) was used to calculate the flow rate. If the tracer did not reach the detector within this time span, the sensor array was moved slowly upward to find the tracer cloud (Smolen, 1997). For this situation, the first detection of the tracer cloud was used to calculate the flow rate. The dye mass at any depth during the survey was identifiable above the manufacturer’s stated concentration limit of 0.01 PPB (detection limit); and assumed that there was no mixing from other dye masses released prior to and from deeper depths inside the well. The AT600 detected rhodamine concentrations ranged from 0.01 – 3.00 PPB during the survey. Depth-Dependent Water Sampling A total of eight depth-dependent samples were collected from 35 to 130 Ft. BGS by using a small double- valve, gas-displacement pump called the HydroBooster which was developed by BESST under a USGS research and development contract (Izbicki, 2004). The HydroBooster system has two modes of operation; the first mode is the “Fast Purge Mode” (FPM), and the second mode is the “Ratchet Mode” (RM). The FPM is performed twice at each sample depth. The first purge cycle removes residual groundwater from the previous sampling depth, and the second cycle removes groundwater refilling the tubing from the new depth. The second cycle washes the tubing internally with water from the depth to be sampled and ensures that samples are representative of their corresponding depths. Groundwater samples were then collected with the RM because the contaminants of concern included volatiles. The HydroBooster (HB) pump is operated by cycling compressed gas between on and off positions. The HB pump consists of a foot-valve and a sample-line return valve. The foot-valve allows groundwater inside the well bore to flow into the bottom of the pump via head pressure from the well’s water column and fill both the gas-in line and the sample-return line simultaneously. Both lines are made from high pressure High-Density Polyethylene (HDPE) tubing, and they run in parallel to each other inside a jacketed HDPE tubing with a safety support cable that is connected to the top of the pump. At the surface, the gas-in line is connected to a compressed gas source (nitrogen) and a two-way valve which is opened and closed to cycle the pump between refill and pumping modes. When compressed gas is released from the source, the gas flows into the gas-in line and translates pneumatic pressure to hydraulic pressure that is applied to the foot valve. The foot-valve closes in response to this pressure and the water inside the gas-in line is forced to make a U-turn inside the pump, pushing the water already inside the sample line back to the surface. One purge cycle is completed when entire water in both the gas-in and sample-return line is purged from the tubing two times – which completes two purge cycles. The third and additional cycles 11 are then used to fill sample bottles from each sample depth. Groundwater flowing through the sample- return line exits in a continuous stream of water as bottles are being filled. As the sample line begins to stiffen near the end of each cycle, the tubing is moved away from the sample bottle and positioned over a waste-water bucket; where the remaining volume is discharged and the gas pressure inside the line is allowed to bleed off after the two-way valve is closed. With the gas pressure turned off, the gas-in and sample-return line can simultaneously recharge with groundwater again. The cycle is repeated as many times as necessary to fill all the required sample bottles. As a QAQC measure, a duplicate sample was collected at 120 Ft. BGS for the purposes of evaluating the variability in analytical methods. To maximize available volume, the duplicate sample was collected immediately following the collection of the primary sample from that depth. Ambient Flow Calculations Post-field groundwater flow calculations can either use the first detection or center of mass method for calculating in-well velocities. The first detection method was used for the San Luis Ranch tracer survey (as well as all other ambient flow profiles) since it provides the most reliable results when mapping extremely low velocities in wells. The variables and the algebraic formulas used in the ambient flow calculations are presented below. Table 1: Calculation variables. 𝑣𝑎 Average borehole velocity (Feet / Minute) 𝑄𝑖 𝑎 Zonal inflow/outflow (GPM) 𝑄𝑖 𝑎𝑖 Inferred zonal outflow (GPM) 𝑄𝑐 Cumulative well discharge (GPM) 𝑑 Depth (𝐿) 𝑑𝑚 Tracer detection depth (Ft. BGS) 𝑑𝑇 Dye tracer pulse injection depth (Ft. BGS) 𝑡 Time (minutes) 𝑡𝑚 Tracer arrival time (minutes) 𝑡𝑇 Tracer pulse injection time (minutes) �ℎ Depth interval 𝑟𝑖 Average borehole radius over the depth interval, (inches) 12 Travel Time (Minutes): The travel time (t) results from subtracting the tracer arrival time (𝑡𝑚) at the fluorometer from the tracer injection depth (𝑡𝑇). 1. 𝑡= 𝑡𝑚−𝑡𝑇 Average Velocity (Ft./min): The velocity (𝑣𝑎) at injection depth “d” results from dividing the distance traveled of the dye tracer (from injection depth to sensor detection depth) over the travel time. 1. 𝑣𝑐 𝑎=𝑐𝑚−𝑐𝑇 𝑡𝑚−𝑡𝑇 Borehole Cumulative Flow (GPM): The cumulative flow rate (𝑄𝑖 𝑎) is equal to the average velocity (𝑣𝑐 𝑎) times the well cross-sectional area (𝜋𝑟𝑖 2 ). The velocity, expressed as feet per minute (Ft./Min), was multiplied by a conversion factor of 7.48 GPM per Ft3 to arrive at the GPM unit portrayed for the borehole and zonal flow rates. 2. 𝑄𝑖 𝑐=𝑣𝑖 𝑎𝜋𝑟𝑖 2 Average Zonal Flow Contribution (GPM): The center of mass and the continuity equation calculations expressed above multiply the velocity of the fluid by the cross-sectional area of the well to determine the cumulative flow of groundwater travelling past the sensor. In each case, the difference in sequentially paired cumulative flows yields the zonal inflow or outflow between depth-sequential pairs of injection depths (Qia), with results reported in gallons per minute (GPM). However, the outflow contribution from the casing bottom (Qiai) of the well (130’ to 135’ BGS) was inferred (not measured) as a means of reaching a zero-difference in volume between total inflow and outflow. 3. 𝑄𝑖 𝑎=𝑄𝑖 𝑐−𝑄𝑖−1 𝑐 4. 𝑄𝑖 𝑎𝑖= −∑𝑄𝑖 𝑎 Flow Data Confidence Criteria Flow sensor resolution: The sensor resolutions detailed below in Table 2 were used to evaluate the velocity and borehole flow data measured at each investigated depth. The equipment limitation is based on the observed dye movement limited by the operation of the dye sensor. The reporting limit (RL) reflects the time allowance used to estimate the dye movement relative to the sensor; in which the field team waited 15 minutes for the dye cloud to travel 5 ft. between the injector depth and the sensor depth. After this point, the field team would move the dye sensor to detect the dye cloud. Due to the expected dispersion of the dye could within the well bore, dye travel estimates less than 1 ft from the original injection depth at or after the 15-minute wait period were considered stationary. 13 Table 2: Dye sensor resolution for borehole flow rate measurement. Sensor Resolution for Measured Borehole Flow Rates* Borehole Diameter Detection Limit (DL) Reporting Limit (RL) Inches Ft./Min GPM Ft./Min. GPM 20 0.01 1.6 0.5 8.2 18 0.01 1.3 0.5 6.6 16 0.01 1.0 0.5 5.2 14 0.01 0.8 0.5 4.0 12 0.01 0.6 0.5 2.9 10 0.01 0.4 0.5 2.0 8 0.01 0.3 0.5 1.3 Poor assigned to values below the DL. Fair assigned to values detected between DL and RL. High assigned to values detected above the RL. Velocity rating is calculated from the travel time field limitation of 5 ft/15 min. Borehole flow rating is the velocity rating times the well’s cross-sectional area and Ft3 to GPM conversion (7.48). The red line applies to the Highway 101 Well. * Does not apply to zonal flow rates. Ambient Concentration Profiling Calculations Water chemistry analyses of TDS and VOCs were performed by BSK Analytical Laboratories and PFAS analyses were performed by Eurofins Laboratories. The table below presents the detected and non- detected analytes from the lab results. Table 3: Laboratory chemical analytes. Detected Analytes Non-Detect Analytes Total Dissolved Solids (mg/L) 1,1,1-Trichloroethane Tetrachloroethene (PCE) 1,1,2,2-Tetrachloroethane Perfluorobutanesulfonic Acid (PFBS) 1,1,2-Trichloro-1,2,2- trifluoroethane Perfluoroheptanoic Acid (PFHpA) 1,1,2-Trichloroethane Perfluorohexanesulfonic Acid (PFHxS) 1,1-Dichloroethane Perfluorohexanoic Acid (PFHxA) 1,1-Dichloroethene 14 Perfluorooctanesulfonic Acid (PFOS) 1,2,4-Trichlorobenzene Perfluorooctanoic Acid (PFOA) 1,2-Dichlorobenzene Perfluoroonanoic Acid (PFNA) 1,2-Dichloroethane 1,2-Dichloropropane 1,4-Dichlorobenzene Benzene Carbon Tetrachloride Chlorobenzene Cis-1,2-Dichloroethene Cis-1,3-Dichloropropene Dichloromethane Ethylbenzene M,p-Xylenes Methyl-t-butyl ether (MTBE) o-Xylene Styrene Toluene Trans-1,2-Dichloroethene Trans-1,3-Dichloropropene Trichloroethene (TCE) Trichlorofluoromethane Vinyl Chloride Total 1,3-Dichloropropene Total Xylenes BOLD analytes are featured in the chemical mass balance results All analytes are reported in ug/L, except for TDS Of all the analytes listed, this report focuses only on the findings of concentration distributions for Tetrachloroethene (PCE), per- and polyfluoroalkyls (PFAS) substances, and total dissolved solids (TDS). Only concentrations of these analytes from sequential inflow zones can be flow-weighted to transform cumulative (lab) concentrations that were measured inside the pipe (well) to mass balance estimates of zonal concentrations outside the pipe. Outflow zones on the other hand are treated differently in that laboratory analytical results represent concentrations of each contaminant inside the well during in-well transport and assumes that there are no external contributions of volume and chemistry from the surrounding formations. Consequently, there are no flow-weighted calculations to estimate the formation chemistry for each interval surrounding the well. The mass balance calculation applied to the zonal inflow chemistry is defined below. Chemical Mass Balance 1. 𝐼𝑑 𝑄𝑐>0 𝑡�𝑑𝑛: 𝐶𝑖 𝑎=𝑄𝑖 𝑐𝐶𝑐1 𝑐−𝑄𝑖−1 𝑐𝐶𝑐2 𝑐 𝑄𝑖 𝑎 2. 𝐼𝑑 𝑄𝑐<0 𝑡�𝑑𝑛:𝐶𝑖 𝑎=𝐶𝑐1 𝑐 15 Results Highway 101 Well Ambient Flow and Chemistry Overview The results from the ambient flow survey indicates a dominant downward flow direction (Figure 4) within the well and a total borehole flowrate of 12 gallons per minute (GPM). In addition, an estimated 80% of the total cumulative flow within the well is generated from the upper screen interval from 45 to 85 Ft. BGS (Figure 5). The zonal flow results reveal that the main inflow into the well occurs from 45 to 75 Ft. BGS; and the main outflow zones are from 75 to 85 Ft. BGS and 115 to 120 Ft. BGS (Figure 6). The results from the ambient chemistry survey show PCE, PFAS substances, and TDS are detected throughout each investigated depth interval of the well (Figures 7 – 14). Only the intervals of 55 to 65 Ft. BGS and 65 to 75 Ft. BGS could be mass balanced. The reason for this is twofold as there are two technical requirements. First, only inflow chemistry can be mass balanced and second, there must be two depth sequential cumulative inflow values paired with two depth sequential lab concentration values to calculate a mass balanced estimate of the analyte’s concentration within the surrounding formation interval. Almost all of the concentration levels of PCE throughout all zonal depths are below the 5 ug/L MCL . In particular, the two grab samples at 35 Ft. BGS and 45 Ft. BGS (blank casing) differ in PCE concentration and the most practical hypothesis for this difference is that a diffusion-based equilibrium process is occurring within the water column above the screen. One aberrant PCE result occurs from 55 to 65 Ft. BGS, where PCE shows a concentration spike of 26.4 micrograms per liter (ug/L) and is marked with a (!) to bring attention to this estimated value (Figure 7). There are two hypothesis considered to explain the spike in PCE concentration, 1) the spike in PCE could be a bias result because of the mass balance calculation, where the calculation is flow weighted by using the cumulative and zonal flow values, and thus, the zonal flow value of 0.01 GPM is so small that it amplifies the mass balance concentration; and 2) the spike in PCE from 55 to 65 Ft. BGS could be a result of a drawdown affect, where under non-pumping conditions the PCE spike shifts to a shallower depth interval and under pumping conditions (as seen in the dynamic PCE results) the PCE spike shifts to a deeper depth interval (80 to 85 Ft. BGS). To further support a drawdown effect hypothesis, static water level under non-pumping conditions was near 11 Ft. BGS and under pumping conditions the water level was 23 Ft. BGS, and thus, this (12-feet) difference in water level is not too different from the change in the PCE spike location (15-feet). While the chemistry result at 55 – 65 Ft. BGS is marked as an outlier, the PCE concentrations from 65 and 75 Ft. BGS is estimated to be at 4.5 ug/L – very close to the MCL of 5 ug/L. This suggests a local PCE source between the depths of 55 to 75 Ft. BGS. In addition, a suite of PFAS substances were detected throughout the Highway 101 Well that include: PFBS, PFHpA, PFHxS, PFHxA, PFOS and PFOA (Figures 8 – 14). The mass balance results for these analytes depict no obvious trend pattern with depth. Though, the zonal depth interval of 55 to 65 Ft. BGS shows similar spikes in mass balanced concentrations for PFHxS, PFHxA, PFOS, and PFOA, and is marked with a (!). This spike in concentration is believed to be similarly due to the mass balance calculation – where the small zonal flow value skews the result. 16 Zonal Flow Results Figure 4: Ambient Highway 101 Well borehole velocity by depth. Asterisk (*) defines interval was inferred. Double asterisk (**) defines dye concentrations did not change-observed as stationary water. Figure 5: Highway 101 Well ambient cumulative borehole flow rate by depth. Asterisk (*) defines interval was inferred. Double asterisk (**) defines dye concentrations did not change -observed as stationary water. Flow Direction 17 Figure 6: Highway 101 Well ambient zonal flow contributions by depth. Asterisk (*) defines interval was inferred. Double asterisk (**) defines dye concentrations did not change-observed as stationary water. Flow Direction 18 Zonal Chemistry Results Figure 7: Ambient Highway 101 Well mass balanced chemistry of PCE with zonal flow contributions. Exclamation point (!) is to bring attention to the skewed result. Mass balanced (MB) and Not-mass balanced (NMD). Top of Screen = 45’ BGS. Grab sample from blank casing above screen. Figure 8: Ambient Highway 101 Well mass balanced chemistry of PFBS with zonal flow contributions. Exclamation point (!) is to bring attention to the skewed result. Mass balanced (MB) and Not-mass balanced (NMD). Top of Screen = 45’ BGS. Grab sample from blank casing above screen. 19 Figure 9: Ambient Highway 101 Well mass balanced chemistry of PFHpA with zonal flow contributions. Exclamation point (!) is to bring attention to the skewed result. Mass balanced (MB) and Not-mass balanced (NMD). Top of Screen = 45’ BGS. Grab sample from blank casing above screen. Figure 10: Ambient Highway 101 Well mass balanced chemistry of PFHxS with zonal flow contributions. Exclamation point (!) is to bring attention to the skewed result. Mass balanced (MB) and Not-mass balanced (NMD). Top of Screen = 45’ BGS. Grab sample from blank casing above screen. 20 0 Figure 11: Ambient Highway 101 Well mass balanced chemistry of PFHxA with zonal flow contributions. Exclamation point (!) is to bring attention to the skewed result. Mass balanced (MB) and Not-mass balanced (NMD). Top of Screen = 45’ BGS. Grab sample from blank casing above screen. Figure 12: Ambient Highway 101 Well mass balanced chemistry of TDS with zonal flow contributions. Exclamation point (!) is to bring attention to the skewed result. Mass balanced (MB) and Not-mass balanced (NMD). Top of Screen = 45’ BGS. Grab sample from blank casing above screen. 21 Figure 13: Ambient Highway 101 Well mass balanced chemistry of PFOS with zonal flow contributions. Exclamation point (!) is to bring attention to the skewed result. Mass balanced (MB) and Not-mass balanced (NMD). Top of Screen = 45’ BGS. Grab sample from blank casing above screen. Figure 14: Ambient Highway 101 Well mass balanced chemistry of PFOA with zonal flow contributions. Exclamation point (!) is to bring attention to the skewed result. Mass balanced (MB) and Not-mass balanced (NMD). Top of Screen = 45’ BGS. Grab sample from blank casing above screen. 22 Summary and Conclusions Highway 101 Well has a downward flow from upper well screen to lower well screen zone. This may allow PCE and PFAS mass to migrate from shallow depths (45 to 75 Ft. BGS) to deeper depths (75 to 85 Ft. BGS, 115 to 120 Ft. BGS, and 130 to 135 Ft. BGS). Further investigation is needed to evaluate this downward flow in the well in relation to contaminant transport. The concentrations of PFOS and PFOA are above the response level and are vertically migrating downward and therefore needs to be addressed with well modification and or treatment as well. Recommendations The recommendations considered for the Highway 101 are similar to the recommendation presented in the Highway 101 Well dynamic report, where a packer is suggested to be placed at a depth of 75 to 80 Ft. BGS to seal off zones beneath this depth; as well as to install a modified well pump at 40 Ft. BGS with a perforated engineered suction extending from 45 to 70 Ft. BGS. Furthermore, because the PCE spikes change depth locations, possibly due to a drawdown effect from non-pumping to pumping conditions, it is recommended, in addition to the packer installation, that the Highway 101 Well undergo treatment as well. This is because after packer employment, its utility becomes limited if the Highway 101 Well were to oscillate from pumping to non-pumping conditions, consequently changing the location of amplified PCE concentrations from below the packer to above, respectively. As a result, a pump to waste would need to occur and be accommodated with a treatment system. This requires a flushing period and the amount of time needed for flushing should be empirically determined. REFERENCES San Luis Obispo Highway 101 Well Pumping Test. Cleath-Harris Geologists, Inc. 2017. Well Completion Report. Appendices, pages 1-47. Gossell, M. A., Nishikawa, T., Hanson, R. T., Izbicki, J. A., Tabidian, M. A., Bertine, K., 1999. Application of Flowmeter and Depth-Dependent Water Quality Data for Improved Production Well Construction. Groundwater. Vol. 37 (5), p. 729-735. Izbicki, J. A., 2004. A Small Diameter Sample Pump for Collection of Depth-Dependent Samples from Production Wells Under Pumping Conditions. U.S. Geological Survey Fact Sheet 2004-3096. Smolen, James J., 1996. Cased Hole and Production Log Evaluation, pages 269-293, PenWell Publishing Company. 23 APPENDICES Appendix A: Wellhead Photos Image 1: Highway 101 Well Site. 24 Image 2: Highway 101 Well open hole. Image 3. Ambient depth-dependent sampling. 25 Appendix B: Video Survey Image 4. Highway 101 Well Static Water Level Image 5: Highway 101 Well beginning of upper screen at 45 Ft. BGS. 26 Image 6: Highway 101 Well PVC glue. Image 7: Highway 101 Well end of upper screen at 83 Ft. BGS. 27 Image 8: Highway 101 Well pump (offline) location at 108 Ft. BGS Image 9: Highway 101 Well beginning of lower screen at 115 Ft. BGS and PVC glue. 28 Image 10: Highway 101 Well end of lower screen at 133.6 Ft. BGS. 29 Appendix C: Injection and sampling plan (ISP) for Ambient Profiling 30 Appendix D: Ambient Flow Results 31 Appendix E: Laboratory Chemistry Results Sample DepthDepth IntervalTotal Dissolved Solids (TDS)Tetrachloroethene (PCE)Perfluorobutanesulfonic Acid (PFBS)Perfluoroheptanoic acid (PFHpA)Perfluorohexanesulfonic Acid (PFHxS)Perfluorohexanoic Acid (PFHxA)Perfluorooctanesulfonoic Acid (PFOS)Perfluorooctanoic Acid (PFOA)Perfluorononanoic Acid (PFNA)Ft. BGS Ft. BGS mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 500 5 N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.09 0.01 0.03 N/A 0.04 0.02 N/A N/A N/A 5 PPB N/A N/A N/A 40 PPT 10 PPT N/A 35 35 Grab 620 2.7 0.013 0.004 0.034 0.007 0.032 0.005 0.002 45 45 Grab 630 3.3 0.014 0.004 0.035 0.007 0.028 0.005 0.002 55 45-55 650 1.1 0.013 0.004 0.029 0.007 0.017 0.004 ND 65 55-65 640 1.2 0.013 0.004 0.031 0.008 0.024 0.004 ND 75 65-75 640 1.9 0.013 0.004 0.030 0.007 0.024 0.004 ND 120 115-120 660 1.9 0.013 0.004 0.026 0.007 0.004 0.003 ND 130 120-130 640 3.9 0.014 0.004 0.028 0.008 0.009 0.003 ND Response Level (RL) Maximum Contaminant Level (MCL) Minimum Reporting Level (MRL) Sample Depth Laboratory Results 32 Appendix F: Mass Balance Results Sample DepthDepth IntervalCumulative FlowZonal FlowTotal Dissolved Solids (TDS)Tetrachloroethene (PCE)Perfluorobutanesulfonic Acid (PFBS)Perfluoroheptanoic acid (PFHpA)Perfluorohexanesulfonic Acid (PFHxS)Perfluorohexanoic Acid (PFHxA)Perfluorooctanesulfonoic Acid (PFOS)Perfluorooctanoic Acid (PFOA)Perfluorononanoic Acid (PFNA)Ft. BGS Ft. BGS Ft. BGS GPM mg/L ug/L 5 35 35 Grab 0.0 0.0 620.0 2.7 0.013 0.004 0.034 0.007 0.032 0.005 0.002 45 45 Grab 0.0 0.0 630.0 3.3 0.014 0.004 0.035 0.007 0.028 0.005 0.002 55 45-55 NMD 2.3 2.3 650.0 1.1 0.013 0.004 0.029 0.007 0.017 0.004 ND 65 55-65 MB 0.0 0.0 1880.0 26.4 0.013 0.029 0.535 0.109 1.788 0.130 ND 75 65-75 MB 0.6 0.6 640.0 4.5 0.013 0.004 0.026 0.006 0.024 0.004 ND 85*75-85 NMB -0.9 -0.9 -640.0 -1.9 -0.013 -0.004 -0.030 -0.007 -0.024 -0.004 ND 95*85-115* (blank)0.0 0.0 640.0 1.9 0.013 0.004 0.030 0.007 0.024 0.004 ND 120 115-120 NMB -2.1 -2.1 -660.0 -1.9 -0.013 -0.004 -0.026 -0.007 -0.004 -0.003 ND 130 120-130 NMB 0.3 0.3 640.0 3.9 0.014 0.004 0.028 0.008 0.009 0.003 ND 135*130-135 NMB -0.3 -0.3 -640.0 -3.9 -0.014 -0.004 -0.028 -0.008 -0.009 -0.003 ND 140*135-140 NMB 0.0 0.0 640.0 3.9 0.014 0.004 0.028 0.008 0.009 0.003 ND * Mass balance result was interpolated MB: Mass Balance , NMB: Not-Mass Balanced Sample Depth Flow Data Reporting Limit Mass Balance Results 33 Appendix G: Well Completion Report 34 1 Dynamic Flow and Chemistry Profiling and Pump Testing Report Highway 101 Well Profiled Date: 8/12/21 – 9/3/21 Published Date: 10/2 2 /21 Revised Date: 11/23/21 Prepared By: Dominic Eslamian (Project Hydrogeologist) Reviewed By: Miles Koehler (Field Operations Manager), Kim Miles (Senior Hydrogeologist), M. Deniz Turan (Report Review Manager, PhD. Hydrogeology), Noah Heller (President, MSc. PG. 5792) 2 Table of Contents List of Figures ................................................................................................................................................ 4 List of Tables ................................................................................................................................................. 4 Introduction .................................................................................................................................................. 5 Background Information ............................................................................................................................... 6 Study Area Location and Well Characterization ....................................................................................... 6 Well History ............................................................................................................................................... 7 Methodology ............................................................................................................................................... 10 NPDES Testing ......................................................................................................................................... 10 Step-Rate Test ......................................................................................................................................... 11 24-Hour Pumping Test ............................................................................................................................ 11 Recovery Period Testing ......................................................................................................................... 12 Dynamic Flow Profile .............................................................................................................................. 12 Calculations for Flow Contribution ..................................................................................................... 13 Dynamic Chemistry Profile ...................................................................................................................... 14 List of Mass Balanced Analytes ........................................................................................................... 15 Flow-Weighted Concentration Derivations from Laboratory Results ................................................ 15 Error Analysis .............................................................................................................................................. 16 Sources of Error and Uncertainties ......................................................................................................... 17 Results and Conclusions .............................................................................................................................. 18 NPDES Testing ......................................................................................................................................... 18 8-Hour Step-Rate Test ............................................................................................................................. 20 24-Hour Pumping Test & Recovery Period Test ...................................................................................... 21 Highway 101 Well Dynamic Flow and Chemistry Results Overview ....................................................... 23 Highway 101 Well Dynamic Flow Profile Results .................................................................................... 23 Dynamic Flow Profile Graphs .................................................................................................................. 24 Highway 101 Well Zonal Chemistry Results ............................................................................................ 27 Zonal Chemical Contribution Results ...................................................................................................... 28 Conclusions and Recommendations ........................................................................................................... 30 References .................................................................................................................................................. 36 Appendices .................................................................................................................................................. 37 Appendix A: Wellsite Photos ................................................................................................................... 37 Appendix B: Injection and Sampling Plan .............................................................................................. 40 3 Appendix C: Dynamic Flow Profile Data.................................................................................................. 41 Appendix D: Laboratory Chemistry Results ............................................................................................ 42 Appendix E: Highway 101 Well Mass Balance Results ............................................................................ 43 Appendix F: Well Completion Report ..................................................................................................... 44 4 List of Figures Figure 1: Map of the Highway 101 Well at the Wastewater Treatment Facility in San Luis Obispo, CA. ..... 6 Figure 2: Well construction diagram of Highway 101 Well (from Cleath & Associates, Inc.) ....................... 8 Figure 3: Lithology log of Highway 101 Well (from Cleath & Associates, Inc.) ............................................. 9 Figure 4: Field calculations of casing volume.............................................................................................. 10 Figure 5: Satellite image of pump and treat system setup. ........................................................................ 11 Figure 6: Graph of 8-Hour step-rate test showing depth to water vs. time using the AT200. ................... 20 Figure 7: Graph of 8-Hour step-rate test showing depth to water vs. time from field notes log-sheet. ... 20 Figure 8: Water level measurements from the 24-hour pumping test. ..................................................... 21 Figure 9: Water level recovery following completion of 24-hour pumping test. ....................................... 22 Figure 10: Highway 101 Well average velocity profile by depth. ............................................................... 24 Figure 11: Highway 101 Well cumulative flow by depth. ........................................................................... 24 Figure 12: Highway 101 Well zonal flow contribution by depth ................................................................ 25 Figure 13: Highway 101 Well percent zonal flow contribution by depth. .................................................. 25 Figure 14: Highway 101 Well average zonal flow density. ......................................................................... 26 Figure 15: Profile of Highway Well 101 mass balanced chemistry of PCE with zonal flow contributions. **Error bars trimmed to a minimum of 0 ug/L. .......................................................................................... 28 Figure 16: Profile of Highway Well 101 mass balanced chemistry of PCE with zonal flow contributions. **Error bars trimmed to a minimum of 0 mg/L. ........................................................................................ 29 Figure 17: Zonal flow with mass balanced PCE in correlation with well construction and lithology. ........ 30 Figure 18: Blue glue visible on PVC casing at 85 Ft. BGS. ........................................................................... 32 Figure 19: Blue glue visible on PVC screen at 115 Ft. BGS. ......................................................................... 32 Figure 20: PVC pipe wrap tape on the pump from 103 Ft. BGS to 108 Ft. BGS. ......................................... 35 Figure 21: Highway 101 Well diagram showing a modification scenario to reduce PCE concentration at the wellhead………………………………………………………………………………………………………………………………………….34 List of Tables Table 1: Definitions of variables used in the dynamic profile calculations................................................. 13 Table 2. NPDES laboratory results. ............................................................................................................. 18 Table 3. Blending analysis………………………………………………………………………………………………………………………29 5 Introduction This report details the field work, data gathering activities, field methods, and results for the dynamic flow and depth-dependent chemistry profile that were completed at the Highway 101 Well, located in San Luis Obispo, CA, from August 12, 2021, through September 3rd, 2021. The field work was conducted by BESST, Inc. (BESST), under contract by Water Systems Consulting (WSC) and included the National Pollutant Discharge Elimination System (NPDES) testing, 8-hour step-rate (drawdown) test, 24-hour pumping test, and the recovery period test. The main objective of the dynamic, steady-state, downhole profiling investigation at Highway 101 Well was to identify the vertical zonal flow and mass-balanced chemical distributions of Total Dissolved Solids (TDS) and Volatile Organic Compounds (VOCs). The results of this survey will help Water Systems Consulting to understand the subsurface conditions in relation to zonal groundwater flow and water quality in the Highway 101 Well and guide them regarding potential well modifications and/or treatment, if needed. The reason for the NPDES testing was to determine if the contaminants of concern (COC) within the Highway 101 Well, more specifically Tetrachloroethene (PCE) and Trichloroethene (TCE), would pass the maximum contaminant level (MCL) after being pumped through a granular activated carbon (PURE-CARB) filtration treatment system provided by Pure-Effect. Achieving concentrations below the MCL would allow the treated water to be discharged into the public sanitary sewer. Results from the NPDES testing helped BESST and WSC determine if the Highway 101 Well could continue with active treatment and discharge into the sanitary sewer for the remaining well and aquifer testing. An 8-hour step-rate test was performed to investigate the pumping performance and efficiency of the Highway 101 Well under controlled discharge conditions. To achieve a step-rate test, the flowrate of the pumping well was increased from an initial constant rate through a sequence of flowrate intervals (steps) of progressively higher constant rates. Next, a 24-hour pumping test was completed at the target flowrate achieved by the 8-hour step test to provide two objectives; (1) a detailed account of Highway 101 Well water level response (drawdown) under pumping conditions for WSC to estimate hydraulic properties of the aquifer, and (2) a detailed account of water levels from two nearby monitoring wells (Border Patrol & Wastewater Treatment Plant MW2) for WSC to estimate the radius of hydraulic influence of Highway 101 Well. At the end of the 24- hour pumping test, the pump was turned off and recovery of water levels were monitored and recorded to observe if the water level of the Highway 101 Well would reach to within 10% of original water column length, or static levels within 4 hours, whichever was first. Prior to the start of on-site field work, a flow injection and chemistry sampling plan (ISP) were prepared based on the well construction and its surrounding geology. A total of fifteen flow measurements and seven depth-dependent water quality samples were collected under steady-state flow conditions. In addition, two wellhead samples were collected before and after downhole sampling. Dynamic flow measurements were collected using BESST’s proprietary version of the USGS tracer flowmeter, and groundwater samples were collected using the BESST HydroBooster sampling pump. Groundwater samples were analyzed by BSK Analytical Laboratories located in Fresno, CA. Two wellhead samples, one 6 before and one after the downhole sampling, were collected from the discharge line downstream from the wellhead and analyzed for the same analytes as the downhole samples. The wellhead samples represented blended composites of zonal chemical mass contribution from each contributing flow interval. The details of the NPDES testing, 8-hour step-rate testing, 24-hour pumping test, recovery testing, and flow and chemistry calculations are explained in the Methodology section. Results for the zonal flow and chemical contributions for the analytes of concern are presented graphically in the Results and Discussions section. Potential rehabilitation/modification options for the well are evaluated in the Conclusions and Recommendations section. Tabulated details of these results, measured laboratory concentrations, and additional information are included in appendices A-F. Background Information Study Area Location and Well Characterization The Highway 101 Well is located at 35°15’02” N,-120°40’39”W at the Wastewater Treatment Facility on 35 Prado Road, San Luis Obispo, CA. Below is an aerial image of the well site (Figure 1). Figure 1: Map of the Highway 101 Well at the Wastewater Treatment Facility in San Luis Obispo, CA. The Highway 101 Well borehole was completed in February of 2003 with a diameter of 22 inches and to a total depth of 160 feet below ground surface (Ft. BGS) using a mud rotary drill. The well contains a 12- inch diameter polyvinyl chloride (PVC) well casing to a depth of 145 Ft. BGS and two blank sections of casing from ground surface to 45 Ft. BGS and from 85 to 115 Ft. BGS. In addition, the well has two 7 perforated screens with 0.050-inch slots from 45 to 85 Ft. BGS and 115 to 135 Ft. BGS. Between the well casing and the borehole wall lies a sanitary seal from ground surface to 40 Ft. BGS and a 6x16 gravel pack from 40 to 160 Ft. BGS. Well History After the completion of construction of Highway 101 Well in February 2003, it was put through a series of testing by Cleath-Harris Geologists, Incorporated. On February 14, 2003, a step-rate test was conducted starting with a pumping rate of 300 gallon per minute (GPM), followed by a pumping rate of 405 GPM, and lastly, with a pumping rate of 508 GPM. The static water level was measured at the start of the step test at a depth to water of 7.6 feet, which had reached a depth to water of 60 feet at the end of step testing. From February 18 to February 21 of 2003, a 24-hour pumping test was conducted with a constant pumping rate of 350 GPM and water levels were recorded using an electronic sounder. Results from the 24-hour pumping test presented a static depth to water of 7.5 feet and delta drawdown of 4 feet per log cycle of time (minutes) for the first period, and a delta drawdown of 1.5 feet per log cycle of time (minutes) for the second period. In conjunction with the 24-hour pumping test, water levels at two observation wells nearby (namely, Calle Joaquin Agricultural Reserve (CJAR) Well and Silver City Well) were monitored. While the water levels at the Highway 101 Well had reached a depth to water of 40 feet by the end of the 24-hour pumping test, the monitoring wells’ water levels remained relatively unaffected throughout testing. In 2017, the Highway 101 Well went through another 24-hour pumping test by Cleath and Associates, Inc. The results from this testing were used to calculate well efficiency and aquifer characteristics of transmissivity [L2/T] and storativity [dimensionless] using the Cooper-Jacobs Method. Results from the 2017 calculations presented a well efficiency of 21.5%. Aquifer calculations of transmissivity were estimated to be 60,000 gallons per day per foot. Storativity from the Highway 101 Well to the CJAR and to the Silver City wells were estimated to be 0.0042 and 0.0036, respectively. In addition to the 2017 well tests and calculations of aquifer parameters, Cleath and Associates, Inc. submitted two (grab) water samples to FGL Analytical Chemists Laboratory for water chemistry testing. The water chemistry results returned concentrations of Tetrachloroethylene (PCE) above the 5 ug/L MCL at 9.7 ug/L. The following well diagram (Figure 2) and lithology log (Figure 3) are based on the Well Completion Report provided by Cleath & Associates, Inc. 8 Figure 2: Well construction diagram of Highway 101 Well (from Cleath & Associates, Inc.) 9 Figure 3: Lithology log of Highway 101 Well (from Cleath & Associates, Inc.) 10 Methodology NPDES Testing NPDES testing took place on August 12, 2021, where a 6-inch diameter submersible Grundfos pump (model 450s – 20Hp – 12 s) was placed at 100 Ft. BGS, and two sets of influent and effluent samples were collected and sent for chemistry analysis. In order to achieve representative water chemistry of the formation surrounding the well casing, three casing volumes were purged before water samples were collected. To ensure that no dye was left over from the ambient survey, for each casing volume of water purged from the well, a rhodamine dye check was conducted by collecting a water sample into an aluminum bucket and submerging a AquaTroll-600 (AT600) sensor. The rhodamine dye check was to ensure no residual dye was left in the well from the earlier dye-tracer injection flow profile on August 9, 2021. By using the volume of cylindrical well, 𝜋𝑟2 �, it was estimated that one casing volume equals 787.3 gallons of water. Therefore, with a constant pumping rate of 350 GPM, one casing volume was purged every 2.24 minutes. It was then estimated using the well head totalizer, which used acre-feet, how much acre-feet would need to pass to reach one casing volume, see Figure 3. Furthermore, a 5,000-gallon baker tank was used to store the pumped water until results confirmed the COC in the effluent water was below the MCL. After confirmation of lab results from NPDES testing, the stored water within the baker tank was discharged into the public sanitary sewer. Figure 4: Field calculations of casing volume. 11 Step-Rate Test On August 31, 2021, the step-rate test was conducted for a time span of 8 hours starting at 8PM and ending at 4AM. A 6-inch diameter submersible Grundfos pump (model 385S-300-13) was placed at 105 Ft. BGS and connected to a wellhead totalizer at the surface that discharged groundwater through hosing towards the PURE-CARB filtration treatment system, and eventually into the public sanitary sewer (see Figure 4 for the setup). Throughout the 8-hour step-rate test, water level response was monitored using an AquaTroll-200 (AT200) sensor that was placed 60 feet below ground surface. A total of three steps were completed initially starting at 150 GPM, and every two to three hours the pumping rate was progressively increased by 50 GPM, ending the test at 250 GPM. Figure 5: Satellite image of pump and treat system setup. 24-Hour Pumping Test A 24-hour pumping test was designed to pump the Highway 101 Well at a constant-rate and monitor its water-level response (drawdown) and the water levels of two nearby monitoring wells, namely Border Patrol and Wastewater Treatment Facility MW02. The same submersible Grundfos pump from the step- test was used for the 24-hour test and placed at the same depth. During the 24-hour pumping test, water levels were measured using a water level meter (electronic sounder) and with the AT200. During the first hour of testing water levels were recorded every five minutes, then every fifteen minutes for three hours, then every thirty minutes for another three hours and for the remainder of the test every hour. In addition to performing a new water level measurement, the wellhead totalizer readings of gallons per minute 12 (GPM) were used to estimate the flowrate of the pump. To achieve an estimation of pumping flowrate, two totalizer readings were differenced and divided by the change in time between readings. Recovery Period Testing Immediately after the pump was turned off at the end of the 24-hour pumping test, the recovery of water levels was monitored for the Highway 101 Well and the Border Patrol and Treatment facility monitoring wells. Water level measurements were recorded every minute for the first twenty-minutes, then every five minutes for the next thirty-minutes, and lastly, every fifteen minutes for a one-hour period. Dynamic Flow Profile Prior to on-site field work, a tracer injection and sampling plan (ISP) was prepared based on the well construction specifications (Appendix B). The plan was then implemented by our hydrogeological field team in gathering flow data, collecting groundwater samples, and periodically recording drawdown levels and the pumping rate to ensure that steady-state conditions were satisfied. The pumping water level (PWL) was approximately 19.4 Ft. BGS during the dynamic profiling. The dynamic profile was conducted on August 3, 2021, using the same 6-inch diameter submersible Grundfos pump (model 385S-300-13) as the step-rate and pumping testing, and set at 105 Ft. BGS with an average pumping flowrate of ~230 GPM. The flowrate was monitored using the onsite wellhead totalizer. Groundwater levels and flowmeter measurements were recorded after each dye injection and sampling depth were completed. The tracer used was rhodamine red FWT 50. The FWT 50 tracer has been safely used for decades and is approved by the National Sanitation Foundation (NSF 60) for use in potable drinking water systems. The dynamic flow injection method consisted of deploying high pressure nylon tubing through the annulus spacing between the well casing and the submersible pump. The tubing was fully loaded with the rhodamine tracer prior to testing and was continuously refilled through an electronically controlled hydraulic reloading system. The tracer was released on command by a surface-based timer control unit at each depth. The timer control unit was programmed to control the volume and duration of each injection. Upon completing the field preparation of the system, the tubing was deployed to the first injection depth, at 95 Ft. BGS. Each injection and sampling depth were recorded with a mechanical counter through which the tubing was fed as it was being lowered into the well. After reaching each injection depth, the injection button was depressed, releasing approximately 100 ml of tracer into the well through an injection nozzle outfitted with multiple-sideways injection ports. The injection pressure spreads the tracer sideways, throughout the cross-sectional plane of the well at each injection depth. The time of release was recorded manually on a standardized log form and electronically by a laptop computer. Following each injection, the tracer is instantly pulled towards the pump intake and the time travel of each return to the fluorometer used to calculate in-well flow velocities. The inflow for each zonal interval was then calculated from sequentially paired velocity measurements. 13 The “Sideways Injection” (patented) as referenced above, is essential to acquiring accurate velocity measurements. The process consists of releasing the tracer sideways and simultaneously through circumferentially spaced, multiple holes embedded in the tracer injection nozzle – where the entire cross- sectional flow area inside the well is covered at any given injection depth. Since tooling centralization for flowmeter surveys is required (Smolen, 1997, Maliva, 2016) and tooling cannot easily be centralized when the pump is inside the well, the “Sideways Injection” method compensates for the lack of centralization of any type of flowmeter tooling by instantly spreading the tracer sideways throughout the cross-sectional plane of the pipe. A complete measurement of pipe flow at any depth is therefore achieved whereby velocity calculations within turbulent and laminar flow regimes include simultaneous measurement of the boundary, transitional and axial flow pipe flow. Downhole flow velocities were calculated as the change in feet between the injection points divided by the change in tracer return times to a surface fluorometer. The data was then used to calculate cumulative flows at each tracer injection depth. The algebraic difference between sequential cumulative flows equals the zonal flow contribution entering the well between the injection points. This calculation was performed iteratively throughout the well profile to estimate the flow contribution within each interval (in GPM and in percent of the total contribution). The calculated flow data under both pumping rates are tabulated in Appendix C. Calculations for Flow Contribution Calculations were based upon the well information provided by WSC and field survey results. Up to three measurements were collected at each discrete depth to determine an average cumulative flow. Below is a list of definitions used in the dynamic flow and chemistry calculation tables: Table 1: Definitions of variables used in the dynamic profile calculations. A Well cross-sectional area (Ft2) C constant conversion factor (Ft3/min) to GPM Cave Average analyte chemistry for all depth intervals to the ith degree, Cc Laboratory-measured cumulative concentration (mass/volume) Ci Zonal chemical concentration within interval i (mass/volume) Ctot Composite sample collected at the wellhead tap (mass/volume) 𝑑 Injection/sample depth (Ft. BGS) 𝑑𝑟 Dye tracer return (detection) depth (Ft. BGS) 𝑑𝑇 Dye tracer pulse injection depth (Ft. BGS) �ℎ Investigated depth interval between two injection or sample depths (Ft. BGS) mi Mass flux within interval i (mass/time) 14 n Number of investigated depths for each depth-dependent sample and injection ∆𝑄𝑖 Zonal flow contribution within interval i (GPM) 𝑄𝑖 Average cumulative borehole flow rate within interval i (GPM) 𝑄𝑐 Cumulative well discharge (GPM) rcas Well casing inner radius (Ft.) 𝑡 Time (minutes) 𝑡𝑛𝑟 Dye tracer return (detection) time at injection number n (min) 𝑡𝑛𝑇 Tracer pulse injection time at injection number n (min) 𝑡𝑛𝑃 Peak travel time from injection depth d to the ground surface from injection number n (min) 𝑣𝑖 Average borehole velocity within interval i (Ft. / minute) a) Travel Time (Minutes) 1. 𝑡𝑛𝑃=(𝑡1𝑟−𝑡1𝑇),(𝑡2𝑟−𝑡2𝑇),(𝑡3𝑟−𝑡3𝑇),…,(𝑡𝑛𝑟−𝑡𝑛𝑇) b) Velocity (Ft./min): 2. 𝑣𝑖=(𝑐1 −𝑐2) (𝑟2𝑃−𝑟1𝑃),(𝑐2−𝑐3) (𝑟3𝑃−𝑟2𝑃),(𝑐3−𝑐4) (𝑟4𝑃−𝑟3𝑃),…,(𝑐𝑛−𝑐𝑛+1 ) (𝑟𝑛+1𝑃−𝑟𝑛𝑃) for depths below pump intake, dn, dn+1, …, are calculated down and away from the intake. c) Well Cross-Sectional Area (Ft.2): 3. 𝐴=𝜋(𝑟𝑐𝑎𝑟2 −𝑟𝑐𝑛𝑙2 ) for zonal areas above the pump intake. 4. 𝐴=𝜋𝑟𝑐𝑎𝑟2 for zonal areas below the pump intake. d) Cumulative Flow (GPM): 5. 𝑄𝑖=𝑣𝑖∗𝐴∗𝐶 e) Zonal Flow Contribution (GPM): 6. ∆𝑄𝑖,𝑖+1 =𝑄𝑖−𝑄𝑖+1 Dynamic Chemistry Profile The chemistry profile was performed with a high-pressure pump consisting of two conjoined Nylon tubes that were connected to a proprietary gas drive pump called the Panacea P200 (P200). The P200 pump employs a gas-drive purging and sampling process that is differentiated from an air-lift system by the fact that there is no gas introduced into the stream during sample collection. In contrast to air lifting, a gas- 15 drive pump allows the gas to forcefully push onto the back end of the water column inside the gas-in tubing line and drives the water column through a U-turn inside the pump when under pressure. The pneumatic pressure of the gas forces the foot valve to sit and seal against an O-ring located near the base of the pump during the purge and sample cycle, while simultaneously driving water in the gas-in line to seamlessly join the water column inside the sample return line. The two combined volumes rise inside the sample return line while under pressure and exit the sample return line at the surface. Groundwater exiting the sample return line, flows in a smooth continuous stream until all the water volume from both lines are evacuated from the system. The gas pressure is then bled off by switching a three -way valve at the surface that allows both the gas-in and sample return lines to recharge with groundwater from the sample collection depth under hydrostatic pressure. All downhole samples for Highway 101 Well were collected using low flow sampling technique of the P200 pump called the “Ratcheting Method”. The technique includes two purge cycles, where the first purge cycle cleared the water from the previous sampling depth that was carried down to the new sampling depth. The second purge cycle cleared the water from the new sampling depth; essentially flushing the tubing internally with groundwater from the new depth. After the sampling tubing had been purged two times at the target sample depth, the HydroBooster sampler was operated in Ratchet Mode to bring a continuous water column to the surface. This water column was sampled under gentle flow conditions to minimize volatilization of the sample. For Highway 101 Well, the downhole groundwater survey consisted of collecting seven depth-dependent samples between 50 and 125 Ft. BGS. Sampling depths were initially based on the well construction and lithology. Two wellhead samples, representing blended composites of depth-dependent chemical mass contribution from each contributing flow interval, were collected from the discharge tap of the well; the first one before downhole sampling started, and the second one following the completion of the downhole sampling. Once collected, groundwater samples were sent to the BSK Analytical laboratory for analysis. The laboratory results for each tested analyte are presented in a table in Appendix D. List of Mass Balanced Analytes • Tetrachloroethene (PCE) • Total Dissolved Solids (TDS) *List includes only mass balanced analytes and does not include all analytes presented by the labs. Flow-Weighted Concentration Derivations from Laboratory Results Estimates of analyte concentrations within the formation materials surrounding the well screen, were derived from the laboratory chemistry results for each of the depth-dependent groundwater samples. The standard mass balancing procedure used to derive these estimates is called flow-weighting. The flow- weighting calculation assumes constant mixing inside the well as groundwater moves towards the pump intake. Estimations of the average zonal chemical contributions in the formation were calculated from the cumulatively blended contributions inside the well between any two vertically paired, consecutive water samples. The flow-weighting calculation takes the difference in products (cumulative flow x cumulative chemistry) between any two depths and divides this difference by the zonal flow contribution from the same interval. After the mass balance results were calculated for each interval, the sum of these results 16 was then compared to the average of the actual wellhead concentration on a percent agreement basis. The flow-weighting calculations used in the chemical analysis of the Highway 101 Well are presented below. a) Zonal Chemical Contribution Concentrations: 7. ∆𝐶𝑛,𝑛+1 =(𝑃1 ∗𝐶1 )−(𝑃2 ∗𝐶2) (∆𝑃1,2 ),(𝑃2 ∗𝐶2 )−(𝑃3 ∗𝐶3) (∆𝑃2,3 ),(𝑃3 ∗𝐶3 )−(𝑃4 ∗𝐶4) (∆𝑃3,4 ),(𝑃𝑛∗𝐶𝑛)−(𝑃𝑛+1 ∗𝐶𝑛+1) (∆𝑃𝑛,𝑛+1) b) Theoretical Average Analyte Chemistry: 8. 𝐶𝑎𝑣𝑐=(∆𝑃1,2 ∗∆𝐶1,2)+(∆𝑃2,3 ∗∆𝐶2,3 )+(∆𝑃3,4∗∆𝐶3,4 )+⋯+(∆𝑃𝑖,𝑖+1∗∆𝐶𝑖,𝑖+1 ) 𝑃𝑡𝑛𝑡 9. 𝑚𝑖= ∆𝑄𝑖∗∆𝐶𝑖 Error Analysis Monte Carlo approach, one of the most widely used methods in groundwater hydrology to quantify the uncertainty in flow and chemistry analysis (Ballio and Guadagnini, 2004), was used to estimate cumulative error in the mass balance results, stemming from errors in each parameter in Equation 7 above. The Monte Carlo approach ran 1000 iterations of the mass balance calculation for each analyte using a randomly selected error percentage and range. To do this, we set up a random number generator that provides values ranging between -1 and 1, normally distributed about a mean value of zero. For each iteration of the mass balance, the error added to each parameter is calculated as the assigned error percentage multiplied by 3 times the randomly selected number. The assigned error for cumulative flow (Q) and the laboratory sample results (C) is 2.7%, and 4% respectively. The assigned error percentage is assumed to represent one standard deviation (SD), this produces an error value that is most likely to be zero but could be up to 3 times the assigned error. The mean value is most probable, but the true value could be anywhere up to 3 SD away (i.e. 99.7% confidence level) from the measured value. The mass balance calculation is repeated in this way 1000 times so that statistics can be computed on the resulting range of possible zonal chemical concentrations, inflow, and outflow rates. The results are presented as the mean of the 1000 scenarios and are representative of the zonal flow and chemical mass balance results using the measured flow and concentration values without including error. The calculated inflow concentration interval is derived from the flow-weighted average of two depth sequential samples taken from the well. These values are intended to estimate the mass entering the well between each depth-dependent sample inside the well. Although measured laboratory results of water chemistry from inside the well are quantitative, the mass flux calculations (𝑚𝑖) derived from these results are semi-quantitative since they are based on the measurement of the tracer velocity inside the well. As such, the mass flux estimates from the flow - weighting process can be subject to error under very low, inflow conditions (Singleton et al., 2010). The assigned error bars in the zonal flow and concentration graphs (Figures 10-17) show the range of possible calculated values resulting from the Monte Carlo analysis. The final range of inflow concentrations results from the variation of the cumulative flow value (Qi), the zonal flow value (ΔQi), and 17 the detected laboratory value (C). Extreme negative or positive formational concentration results (𝐶𝑎𝑣𝑐), can result when the change in concentration with depth is not explained by the zonal flow rate (Singleton et al., 2010). Negative results from this type of error were set equal to half the laboratory reporting limit. The calculated error bars are generated from all calculated flow rates and zonal concentrations from the monte carlo analysis. The flow and chemistry results do not display negative flow results. Zonal inflow rates have the largest effect on mass balance concentration results, with small changes in flow contributing the greatest concentration uncertainty as the flow contribution rate approaches zero. Sources of Error and Uncertainties One source of bias and uncertainty is the adjustment of raw flow velocity data for the depth interval from 55 to 60 Ft. BGS. Aberrant in-well velocities due to turbulence are normal for some zones and result from irregularities or surface roughness features such as pipe joints or collars, a change in the free annulus volume from the pump itself and other factors that come into play. To deal with these uncertainties, the raw velocity data and its trend are compared side-by-side with the lithologic information, and they were adjusted according to best professional judgement to reflect the real-life geologic conditions. For example, if there was a large change in velocity through a clay zone or through a blank section of a well, the velocity curve would be adjusted to be more uniform since little groundwater is expected to be produced from clays and no groundwater through blank casing sections. 18 Results and Discussion NPDES Testing Below, in Table 2, are the NPDES testing results that include general chemistry, metals and organic analytes. The COC, PCE and TCE, were both non-detect after going through the PURE-CARB filtration treatment system. Although, one thing to note is arsenic changed from non-detect in the influent to above the MCL in the effluent. One hypothesis for Arsenic concentrations spiking in the effluent could be due to the material used within the PURE-CARB filtration treatment system. According to a study, “Extractable Arsenic and Antimony in Activated Carbon”, Evan Koslow et al., details a comprehensive study that revealed ‘concerns about the amount of naturally present arsenic that can be extracted from the materials’ of the treatment systems. The conclusions presented, from Koslow et al., describe the lack of accurate testing for product quality and sustainable control of activated carbon treatment systems by the American National Standard Institute (ANSI) and National Science Foundation (NSF). Table 2. NPDES laboratory results. General Chemistry Influent 1 Influent 2 Effluent 1 Effluent 2 Alkalinity as CACO3 (mg/L) 460 470 600 NR Bicarbonate as CACO3 (mg/L) 460 470 560 NR Carbonate as CACO3 (mg/L) ND ND 44 NR Hydroxide as CACO3 (mg/L) ND ND ND NR Ammonia as N (mg/L) ND ND 0.17 0.13 Biochemical Oxygen Demand (BOD) (mg/L) ND ND ND ND Bromide (mg/L) 0.18 0.18 0.067 0.059 Chloride (mg/L) 48 48 71 43 Conductivity @ 25C (umhos/cm) 1100 1100 1600 1400 Nitrate as N (mg/L) 3.9 3.9 ND ND Nitrite as N (mg/L) ND ND ND ND Orthophosphate as P (mg/L) ND ND 22 5.5 Perchlorate(mg/L) ND ND ND ND pH (1) (pH units) 7.8 7.8 8.6 8.6 pH Temperature in C 23 22.8 22.8 21.6 Sulfate as SO4 (mg/L) 90 90 58 55 Total Dissolved Solids (TDS) (mg/L) 630 610 990 910 Total Solids (mg/L) 700 700 1200 990 Metals Arsenic (ug/L) ND ND 66 57 Boron (ug/L) 140 130 ND ND Calcium (mg/L) 75 79 13 16 Copper (ug/L) ND 100 ND ND Hardness as CACO3 (mg/L) 490 510 100 140 Iron (ug/L) 300 370 34 ND 19 Magnesium (mg/L) 74 77 17 24 Manganese (ug/L) 19 25 ND ND Potassium mg/L) ND ND 440 350 Silver (ug/L) ND ND ND ND Sodium (mg/L) 50 53 48 46 Zinc (ug/L) ND 88 ND ND Organics Tetrachloroethene (PCE) (ug/L) 6.1 4.6 ND ND Trichloroethene (TCE) (ug/L) ND ND ND ND surrogate: 1,2-Dichlorobenzene-d4 (%) 90 91 89 90 surrogate: Bromofluorobenzene (%) 93 95 93 93 2-Chloroethyl vinyl ether (ug/L) ND ND ND ND surrogate: 1,2-Dichlorothane-d4 (%) 106 106 108 109 surrogate: Bromofluorobenzene (%) 98 96 99 100 surrogate: Toluene-d8 (%) 95 96 96 96 Acrylonitrile (ug/L) ND ND ND ND surrogate: 1,2-Dichlorothane-d4 (%) 109 120 112 118 surrogate: Bromofluorobenzene (%) 103 102 100 101 surrogate: Toluene-d8 (%) 96 94 97 96 Acrolein (ug/L) ND ND ND ND surrogate: 1,2-Dichloroethane-d4 (%) 105 115 107 114 surrogate: Bromofluorobenzene (%) 99 97 99 99 surrogate: Toluene-d8 (%) 95 94 97 96 20 8-Hour Step-Rate Test The results to the 8-hour step-rate test are shown in Figures 6 and 7 below. The depth to water data in Figure 6 are generated by the AT200. The depth to water data in Figure 7 are generated from the field notes. The linear trendline in Figure 7 illustrates a decreasing water level of 0.06 Ft/Min. Figure 6: Graph of 8-Hour step-rate test showing depth to water vs. time using the AT200. Figure 7: Graph of 8-Hour step-rate test showing depth to water vs. time from field notes log-sheet. 9 11 13 15 17 19 21Depth to Water (Ft. BGS)8-hour Step Test Pump On 150 GPM 200 GPM 250 GPM Transducer slipped out of position Pump Off y = 0.0639x + 16.438 R² = 0.9725 16 17 18 19 20 21 22 20:0020:0320:0620:1020:1320:2520:4020:5521:3022:3022:3522:3922:4322:5023:0523:2023:450:551:031:111:151:191:281:452:002:303:17Water Depth (Ft. BGS)8-Hour Step-Rate Test Step-Rate Test Linear (Step-Rate Test) Step 1: 150 GPM Step 2: 200 GPM Step 3: 250 GPM 21 24-Hour Pumping Test & Recovery Period Test The results to the 24-hour pumping test and recovery period are shown in Figures 8 and 9 below. The graphs illustrate the water levels of the Highway 101 Well and two monitoring wells during the 24-hour pumping test, and the recovery of water levels after completing the 24-hour pumping test. Water level measurement between the AT200 and the sounder show good agreement throughout both tests. The water level in the Highway 101 Well recovered to static water level within 2-hours. Figure 8: Water level measurements from the 24-hour pumping test. 0 5 10 15 20 25 30Depth to Water (Ft. BGS)24-Hour Pumping Test Hwy101 Depth To Water (ft) XDUCER Hwy101 Depth To Water (ft) SOUNDER Border Patrol MW Depth To Water (ft)Wastewater MW Depth To Water (ft) Pump off 22 Figure 9: Water level recovery following completion of 24-hour pumping test. 0 5 10 15 20 25Depth to Water (Ft. BGS)Recovery Test (pump off @10:44AM) Hwy101 Depth To Water (ft) XDUCER Hwy101 Depth To Water (ft) SOUNDER 23 Highway 101 Well Dynamic Flow and Chemistry Results Overview The results from the dynamic flow and chemistry profile of the Highway 101 Well are illustrated in Figures 10-15. The overall flow profile reveals the greatest zonal flow contribution deriving from the upper screen section, with the highest contribution coming from the interval of 50 to 55 Ft. BGS. The analytes of main concern for the Highway 101 Well were PCE and TCE. The chemistry results showed that the wellhead concentration for PCE was 6.5 ug/L, over the MCL of 5 ug/L. The downhole chemistry profile, when mass-balanced by flow weighting, revealed that PCE was present at all of the investigated depth intervals. TCE was non-detected at all sampling depths, therefore it was not mass-balanced and presented in this report. Highway 101 Well Dynamic Flow Profile Results Under dynamic pumping conditions, the water velocity and cumulative flow is expected to increase towards the pump intake (Figures 10 and 11). The greatest zonal flow contribution is estimated from the upper screen section of 45 to 85 Ft. BGS. More specifically, from 50 to 60 Ft. BGS, 100 GPM (45% of the total flow) is contributed (Figures 12 and 13). On average the zonal density is 5.4 GPM per foot of screen (GPM/Ft. Screen) (Figure 13). The depth interval from 50 to 55 Ft. BGS contributes an order of magnitude greater zonal flow density on average than the rest of the investigated depth intervals, most likely due to the fact that the lithology surrounding this zone has the coarsest sediment size distribution consisting of medium to coarse size gravel (upwards of 1inch) with very little clay. 24 Dynamic Flow Profile Graphs – Testing Performed at 230 GPM Figure 10: Highway 101 Well average velocity profile by depth. Figure 11: Highway 101 Well cumulative flow by depth. 2.0 26.4 36.3 42.5 51.4 56.2 3.45 0.61 0.00 0.0 20.0 40.0 60.0 80.0 45-50 50-60 60-70 70-80 80-85 85-115 Pump (Blank) 115-125 125-135 135-145 Velocity (Ft./Min.)Depth (Ft. BGS)Average Borehole Velocity Total Flow Rate: 230 GPM 8.10 108 148 173 210 230 20 3.60 0.00 0.00 50.00 100.00 150.00 200.00 250.00 300.00 45-50 50-60 60-70 70-80 80-85 85-115 Pump (Blank) 115-125 125-135 135-145 Flow Rate (GPM)Depth (Ft. BGS)Cumulative Flow Rate Total Flow Rate: 230 GPM 25 Figure 12: Highway 101 Well zonal flow contribution by depth Figure 13: Highway 101 Well percent zonal flow contribution by depth. 8.1 99.7 40.2 25.6 36.1 0.0 16.7 3.60 0.0 20.0 40.0 60.0 80.0 100.0 120.0 45-50 50-60 60-70 70-80 80-85 85-115 Pump (Blank) 115-125 125-135 Flow Rate (GPM)Depth INterval (Ft. BGS)Zonal Flow Rate 3.5% 43% 17% 11% 16% 0.0% 7.2% 1.6% 0.0%10.0%20.0%30.0%40.0%50.0%60.0% 45-50 50-60 60-70 70-80 80-85 85-115 Pump (Blank) 115-125 125-135 Percent of Total Flow Rate (%)Depth INterval (Ft. BGS)Percent Zonal Flow Rate 26 Figure 14: Highway 101 Well average zonal flow density. 1.62 9.97 4.02 2.56 7.22 0.00 1.67 0.36 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 45-50 50-60 60-70 70-80 80-85 85-115 Pump (Blank) 115-125 125-135 GPM per Foot of Screen Depth INterval (Ft. BGS)Zonal Flow Density 27 Highway 101 Well Zonal Chemistry Results With the exception of PCE and toluene, no investigated VOC analytes were detected in the groundwater samples collected during the profile. The toluene was only detected in one downhole sample and the equipment blank and is presumed to anomalous as discussed in the Conclusions section of the report. The The wellhead concentration of PCE, representing a blended, flow-weighted value of the entire well, was above the 5 ug/L MCL at 6.5 ug/L. When flow-weighting the depth-dependent groundwater concentrations of PCE, the mass balanced results show that PCE is generally below the MCL at most depth intervals but was calculated to be present at elevated levels in the interval from 80 – 85 Ft. BGS. (Figure 15). This depth interval, in relation to the lithology, marks the transition from gravel above to predominantly silty clay below - a sediment type commonly known for its high sorption due to its ion exchange capacity, as well as other retardation factors that affect sorption. Silty clays units, typically have low permeability, but have large sorption coefficients with respect to chlorinated hydrocarbons and a large storage capacity for mass as well. A study “Impact of Clay-DNAPL Interactions on Transport and Storage of Chlorinated Solvents in Low Permeability Zone”, (Demond, 2015), describes how the hydrogeochemical conditions of clay are altered when in contact with PCE and thus, changing its transport properties. In light of this general knowledge, we also considered that under favorable pH, oxidation and pumping conditions, PCE can be stripped (or desorbed) from the clay matrix in the 80 to 85 Ft. BGS interval. There is also an interval from 115 – 125 Ft. BGS which contributes 5.4 ug/L PCE, just above the MCL. This interval also represents a silty clay, further correlating the observed PCE concentrations with the silty clay intervals within the surrounding lithology. Figures 15 and 16 show zonal plots of concentration distribution with depth for PCE and TDS, respectively, and are plotted against the sample co-located zonal flow contribution. 28 Zonal Chemical Contribution Results Figure 15: Profile of Highway Well 101 mass balanced chemistry of PCE with zonal flow contributions. **Error bars trimmed to a minimum of 0 ug/L. 3.6 3.5 3.1 1.9** 18 0.0 5.4 3.8 0.0 10.0 20.0 30.0 40.0 50.0 60.0 45-50 50-60 60-70 70-80 80-85 85-115 Pump (Blank) 115-125 125-135 Concentration (ug/L)Depth Interval (Ft. BGS)Tetrachloroethylene (PCE) Key Flow Direction 8.1 99.7 40.2 25.6 36.1 0.0 16.7 3.60 0.0 50.0 100.0 150.0 45-50 50-60 60-70 70-80 80-85 85-115 Pump (Blank) 115-125 125-135 Flow Rate (GPM)Depth INterval (Ft. BGS)Zonal Flow Rate Key Flow Direction 29 Figure 16: Profile of Highway Well 101 mass balanced chemistry of PCE with zonal flow contributions. **Error bars trimmed to a minimum of 0 mg/L. 669 668 676 453** 582** 0 640 640 0 500 1000 1500 2000 45-50 50-60 60-70 70-80 80-85 85-115 Pump (Blank) 115-125 125-135 Concentration (mg/L)Depth Interval (Ft. BGS)Total Dissolved Solids Key Flow Direction 3.5% 43% 17% 11% 16% 0.0% 7.2% 1.6% 0.0%10.0%20.0%30.0%40.0%50.0%60.0% 45-50 50-60 60-70 70-80 80-85 85-115 Pump (Blank) 115-125 125-135 Percent of Total Flow Rate (%)Depth INterval (Ft. BGS)Percent Zonal Flow Rate Key Flow Direction 30 Figure 17: Zonal flow with mass balanced PCE in correlation with well construction and lithology. 31 Conclusions Well Highway 101 is constructed with two screen sections from 45 to 85 Ft. BGS and 115 to 135 Ft. BGS. The surrounding lithology around the upper screen consists of three sedimentary types that include: clay, medium-to-coarse sized gravels, and gravel with some interbedded silty clay. The groundwater flow in the upper screen is the highest from 50 to 60 Ft. BGS, as this zone is dominated by coarse gravels with a sediment size distribution ranging from 0.25 inches to 1 inch (Driller’s log). The surrounding lithology around the lower screen consists of predominantly silty clays and some gravels, and when combined with a shorter screen the groundwater flow production in the lower screen, compared to the upper screen, is less due to low permeability. The chemistry results from the dynamic profile in contrast to the results from the ambient survey, represent a concentration gradient within the formation. According to mass balance results, the depth interval of 80 to 85 Ft. BGS exhibits a PCE concentration of 18 ug/L, well beyond the MCL of 5 ug/L. The results from the Monte Carlo analysis show that this concentration may be as high as 50 ug/L. Our hypothesis is that the downward gradient within the formation as evidenced by the ambient survey is loading the PCE onto the top of the clay unit and desorbing from this clay unit under pumping conditions. As a result, under dynamic conditions there is more hydraulic engagement into the surrounding lithology and the hydraulic stress is stripping the PCE locked within the silty clay zone that surrounds a portion of the lower screen. This is because clays have an electrochemical ‘stickiness’ that can hold onto contaminants, such as PCE. Another potential factor that should be considered as causal (in part) to the elevated PCE concentrations can be found in the video survey footage of the well performed after the test pump was installed (Figures 18 and 19). There is blue PVC glue visible on the inner surface of the PVC screen at the thread joints. This glue is seen from 84 to 85 Ft. BGS, which may impact the sample collected in the casing blank at 95 Ft. BGS – between the upper and lower well screen. The analysis from 95-foot depth sample returned a lab concentration of 5.6 ug/L, much higher than the sample collected at 80 Ft. BGS. There is also glue visible at 115 Ft. BGS, which is the other sample depth associated with elevated PCE, returning a lab concentration of 5.1 ug/L. Lastly, toluene was only detected in one groundwater sample and in the equipment blank taken from the sampling pump after the chemistry survey. It was not detected at the wellhead in any sample. Due to the limited and inconsistent detection of toluene, including its absence from the wellhead samples, it is likely that the two detections were the result of cross contamination from the onsite PVC pipe wrap tape, rather than representative of actual water quality. The video survey of Well 101 shows PVC pipe wrap tape used on the bottom of the pump from 103 Ft. BGS to 108 Ft. BGS (Figure 20) and the tape was also used to secure the pressure transducer at the ground surface. PVC pipe wrap tape is known to have detectable amounts of toluene and thus, during the dynamic sampling survey, the tape may have smeared onto the sample tooling during deployment and cross contaminated some of the samples. 32 Figure 18: Blue glue visible on PVC casing at 85 Ft. BGS. Figure 19: Blue glue visible on PVC screen at 115 Ft. BGS. 33 Figure 20: PVC pipe wrap tape on the pump from 103 Ft. BGS to 108 Ft. BGS. Recommendations Whether the PCE is derived from the aquifer, in part from the well’s glue, or both, modifying the well with a packer may provide an avenue to improve the water quality produced by the well – such that the discharge concentration is below the State and Federal MCL of 5 ug/L. One scenario for modification is to seal off the bottom 5-feet of the upper screen and the bottom screen as well, using an inflatable packer. If pursuing this option is considered, then by using a simple blending calculation where each depth’s zonal flow is multiplied by the mass balanced PCE concentration estimate and divided by the total flow (flow- weighting), the new wellhead concentrations are estimated to be in the range of 3.2 ug/L (Table 3). Table 3. Blending analysis of PCE concentrations if the bottom screen were to be sealed off using packers. Blending Analysis Depth Interval (Ft. BGS) Zonal Flow Contributions (GPM) PCE Mass Balance Results (ug/L) Cumulative Flowrate (GPM) Blended PCE (ug/L) 45-50 8.1 3.6 8.1 3.6 50-60 100 3.5 108.1 3.5 60-70 40.2 3.2 148.3 3.4 70-80 25.5 1.8 173.9 3.2 Total at WH 3.2 34 An important consideration for this approach is to distance the modified inflow zone away from the top of the packer, reducing the hydraulic stress imparted to the clay – as a result, reducing the stripping effect. Therefore, an engineered suction should be used in conjunction with the packer – with the bottom 10-feet of the suction consisting of a blank pipe section and the remaining length of the suction being perforated. In short, a conventional pump column would need to be reconfigured to afford this solution (Figure 21). BESST has a considerable amount of experience in employing these solutions, writing work plans, providing field oversight, as well as installation reports for regulatory review. 35 Figure 21: Highway 101 Well diagram showing a modification scenario to reduce PCE concentration at the wellhead. 36 References San Luis Obispo Highway 101 Well Pumping Test. Cleath-Harris Geologists, Inc. 2017. Well Completion Report. Appendices, pages 1-47. Ballio, F. and Guadagnini, A., 2004. Convergence assessment of numerical Monte Carlo simulations in groundwater hydrology. Water resources research, 40(4). Demond, Avery., et al. 2015. Impact of Clay-DNAPL Interactions on Transport and Storage of Chlorinated Solvents in Low Permeability Zones. 126 pp. Department of Defense Strategic Environmental Research and Development Program (SERDP). Koslow, Evan., 2003. Extractable Arsenic and Antimony in Activated Carbon, pages 1-3, Water Conditioning & Purification. Maliva, R. G., 2016. Aquifer Characterization Techniques. 617 pp. Springer Int. Publishing. Poulsen D. L., Cook, P. G., Simmons, C. T., Solomon, D. K., & Dogramaci, S., 2019. Depth-resolved groundwater chemistry by longitudinal sampling of ambient and pumped flows within long-screened and open borehole wells. Water Resour. Res., 55, 9417–9435. https://doi.org/10.1029/ 2019WR025713. Singleton, M. J., Moran, J. E., Esser, B. K., Roberts, S. K., & Hillegonds, D. J., 2010. California GAMA Special Study: An isotopic and dissolved gas investigation of nitrate source and transport to a public supply well in California's Central Valley (No. LLNL-TR-427957). Lawrence Livermore National Lab. (LLNL), Livermore, CA. Smolen, James J., 1996. Cased Hole and Production Log Evaluation, pages 269-293, PenWell Publishing Company 37 Appendices Appendix A: Wellsite Photos Image 1: PURE-CARB filtration treatment system with baker tank. Image 2. Highway 101 well-site. 38 Image 3. Discharge line into public supply sewer. Image 4. Treatment facility monitoring well. 39 Image 5. Border Patrol monitoring well. 40 Appendix B: Injection and Sampling Plan 41 Appendix C: Dynamic Flow Profile Data Depth Interval Average Velocity Cumulative Flow Rate Average Zonal Fow Density Ft. BGS Ft./Min.GPM GPM %GPM/Ft. Screen 45-50 1.9 8.1 8.10 3.52%1.62 50-54 13.7 57.6 49.50 21.49%12.37 54-55 21.2 88.9 31.34 13.61%31.34 55-60*25.7 108.0 20.12 8.74%4.02 60-65*30.5 128.1 20.12 8.74%4.02 65-70 35.3 148.2 20.12 8.74%4.02 70-75 37.5 157.5 9.26 4.02%1.85 75-80 41.4 173.8 16.29 7.07%3.26 80-85**50.0 210.0 36.21 15.72%7.24 85-95 (blank)50.0 210.0 0.00 0.00%0.00 95-110 (pump)54.8 230.3 0.00 0.00%0.00 110-115 (blank)3.4 20.3 0.00 0.00%0.00 115-120 **3.4 20.3 14.46 6.28%2.89 120-125 1.0 5.8 2.26 0.98%0.45 125-135 0.6 3.6 3.59 1.56%0.36 *Interpolated flow value from zonal flow density. ** Inferred flow result Zonal Flow Contribution 42 Appendix D: Laboratory Chemistry Results SAMPLE #Sample DepthTotal Dissolved Solids (TDS)Tetrachloroethene (PCE)Unit Ft. BGS mg/L ug/L RL --5 0.5 MCL --1000 5 1 WH #1 640.0 6.4 11 WH #2 670.0 6.5 N/A WH avg 655.0 6.5 2 50 670.0 3.6 3 60 670.0 3.5 6 70 670.0 3.4 7 80 640.0 3.2 8 95 630.0 5.6 9 115 640.0 5.1 10 125 640.0 3.8 Lab Results Analytes Detected Laboratory Data *Only Detected Analytes 43 Appendix E: Highway 101 Well Mass Balance Results Sample DepthDepth IntervalCumulative FlowTotal Dissolved Solids (TDS)Tetrachloroethene (PCE)Ft. BGS Ft. BGS Ft. BGS GPM %mg/L ug/L 5.0 0.5 640 6.4 670 6.5 655 6.5 631 5.6 3.8%16% 50 45-50 8.1 8.1 4%670 3.6 60 50-60 108 99.9 43%670 3.5 70 60-70 148 40.2 17%670 3.1 80 70-80 174 25.6 11%466 2.0 95 80-85 210 36.2 16%582 17 WH 85-115 (blank, pump)230 0.0 0%---- 115 115-125 20.3 16.7 7%640 5.4 125 125-135 3.6 3.6 2%640 3.8 Theoretical Well Head Average AnalytesFlow Data Actual Well Head Average Mass Balance Reporting Limit Well Head #1 Well Head #2 Zonal FlowPercent Difference 44 Appendix F: Well Completion Report 45 46 47 48 49 50 51 BSK Analytical Lab Results from Well Profiling and Sampling Fieldwork Remedial Investigation Report City of San Luis Obispo | I Appendix I BSK Analytical Lab Results from Well Profiling and Sampling Fieldwork I Thank you for using BSK Associates for your analytical testing needs. In the following pages, you will find the test results for the samples submitted to our laboratory on 8/27/2021. The results have been approved for release by our Laboratory Director as indicated by the authorizing signature below. The samples were analyzed for the test(s) indicated on the Chain of Custody (see attached) and the results relate only to the samples analyzed. BSK certifies that the testing was performed in accordance with the quality system requirements specified in the 2016 TNI Standard. Any deviations from this standard or from the method requirements for each test procedure performed will be annotated alongside the analytical result or noted in the Case Narrative. Unless otherwise noted, the sample results are reported on an as received basis. This certificate of analysis shall not be reproduced except in full, without written approval of the laboratory. If additional clarification of any information is required, please contact your Project Manager, PM Staff , at 559-497-2888. Thank you again for using BSK Associates. We value your business and appreciate your loyalty. Sincerely, BESST, Inc. San Rafael, CA 94901 50 Tiburon Street, Suite 7 Dear Miles Koehler, Miles Koehler 9/13/2021 AEH3240 RE: Report for AEH3240 General Elaine M. Phillips, Project Coordinator II Accredited in Accordance with NELAP ORELAP #4021 BSK Associates Laboratory Fresno 1414 Stanislaus St Fresno, CA 93706 559-497-2888 (Main) 559-485-6935 (FAX) Invoice: AE20465 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 1 of 21 AEH3240 General Case Narrative Project and Report Details Client:BESST, Inc. Report To: Project #: Received:8/27/2021 - 10:46 Miles Koehler Invoice To: Invoice Attn: BESST, Inc. Leslie Emmens Project PO#:- Report Due:9/13/2021 Invoice Details SLO-Prop 1 - CJAR Well Sample Receipt Conditions Default CoolerCooler: Temperature on Receipt ”C: 5.9 Containers Intact COC/Labels Agree Received On Wet Ice Packing Material - Foam Packing Material - Other Sample(s) were received in temperature range. Initial receipt at BSK-FAL New CoolerCooler: Temperature on Receipt ”C: 14.2 Containers Intact COC/Labels Agree Received On Wet Ice Packing Material - Foam Packing Material - Other Sample(s) were received in temperature range. Initial receipt at BSK-FAL Data Qualifiers The following qualifiers have been applied to one or more analytical results: ***None applied*** Recipient(s) Report Format Report Distribution CC: Miles Koehler FINAL.RPT Noah Heller FINAL.RPT Robert Emmens FINAL.RPT www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 2 of 21 Certificate of Analysis AEH3240 General SLO-Prop 1 - CJAR Well Sample Description: CJAR - 125-082521 Sample ID: AEH3240-01 08/25/2021 - 13:53 Sampled By: Grab Robert Emmens Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/01/21 09/01/21AEI00106301 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LBenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LChlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LDichloromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LEthylbenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lo-Xylene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LStyrene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/01/21 09/02/21AEI00756.2 1 0.50 ug/LToluene EPA 524.2 09/01/21 09/02/21AEI00754.4 1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %99 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %100 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 3 of 21 Certificate of Analysis AEH3240 General SLO-Prop 1 - CJAR Well Sample Description: CJAR - 115-082521 Sample ID: AEH3240-02 08/25/2021 - 14:27 Sampled By: Grab Robert Emmens Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/01/21 09/01/21AEI00106201 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LBenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LChlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LDichloromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LEthylbenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lo-Xylene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LStyrene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/01/21 09/02/21AEI00756.0 1 0.50 ug/LToluene EPA 524.2 09/01/21 09/02/21AEI00752.8 1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %99 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %99 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 4 of 21 Certificate of Analysis AEH3240 General SLO-Prop 1 - CJAR Well Sample Description: CJAR - 105-082521 Sample ID: AEH3240-03 08/25/2021 - 14:47 Sampled By: Grab Robert Emmens Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/01/21 09/01/21AEI00106101 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LBenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LChlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LDichloromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LEthylbenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lo-Xylene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LStyrene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/01/21 09/02/21AEI00756.4 1 0.50 ug/LToluene EPA 524.2 09/01/21 09/02/21AEI00751.6 1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %96 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %95 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 5 of 21 Certificate of Analysis AEH3240 General SLO-Prop 1 - CJAR Well Sample Description: CJAR - 95-082521 Sample ID: AEH3240-04 08/25/2021 - 15:09 Sampled By: Grab Robert Emmens Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/01/21 09/01/21AEI00106101 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LBenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LChlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LDichloromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LEthylbenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lo-Xylene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LStyrene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/01/21 09/02/21AEI00756.1 1 0.50 ug/LToluene EPA 524.2 09/01/21 09/02/21AEI00750.56 1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %97 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %98 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 6 of 21 Certificate of Analysis AEH3240 General SLO-Prop 1 - CJAR Well Sample Description: CJAR - 85-082521 Sample ID: AEH3240-05 08/25/2021 - 15:30 Sampled By: Grab Robert Emmens Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/01/21 09/01/21AEI00106201 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LBenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LChlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LDichloromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LEthylbenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lo-Xylene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LStyrene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/01/21 09/02/21AEI00755.5 1 0.50 ug/LToluene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %99 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %98 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 7 of 21 Certificate of Analysis AEH3240 General SLO-Prop 1 - CJAR Well Sample Description: CJAR - 75-082521 Sample ID: AEH3240-06 08/25/2021 - 15:48 Sampled By: Grab Robert Emmens Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/01/21 09/01/21AEI00106201 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LBenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LChlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LDichloromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LEthylbenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lo-Xylene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LStyrene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/01/21 09/02/21AEI00755.6 1 0.50 ug/LToluene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %97 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %97 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 8 of 21 Certificate of Analysis AEH3240 General SLO-Prop 1 - CJAR Well Sample Description: CJAR - 65-082521 Sample ID: AEH3240-07 08/25/2021 - 16:03 Sampled By: Grab Robert Emmens Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/01/21 09/01/21AEI00106301 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LBenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LChlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LDichloromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LEthylbenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lo-Xylene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LStyrene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/01/21 09/02/21AEI00753.2 1 0.50 ug/LToluene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %98 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %97 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 9 of 21 Certificate of Analysis AEH3240 General SLO-Prop 1 - CJAR Well Sample Description: CJAR - 55-082521 Sample ID: AEH3240-08 08/25/2021 - 16:20 Sampled By: Grab Robert Emmens Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/01/21 09/01/21AEI00106301 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LBenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LChlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LDichloromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LEthylbenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lo-Xylene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LStyrene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/01/21 09/02/21AEI00754.2 1 0.50 ug/LToluene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %96 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %97 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 10 of 21 Certificate of Analysis AEH3240 General SLO-Prop 1 - CJAR Well Sample Description: CJAR - 45-082521 Sample ID: AEH3240-09 08/25/2021 - 16:40 Sampled By: Grab Robert Emmens Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/01/21 09/01/21AEI00106301 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LBenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LChlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LDichloromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LEthylbenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lo-Xylene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LStyrene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/01/21 09/02/21AEI00756.2 1 0.50 ug/LToluene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %99 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %99 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 11 of 21 Certificate of Analysis AEH3240 General SLO-Prop 1 - CJAR Well Sample Description: CJAR - 115-082521-DUP Sample ID: AEH3240-10 08/25/2021 - 17:01 Sampled By: Grab Robert Emmens Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/01/21 09/01/21AEI00106401 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LBenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LChlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LDichloromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LEthylbenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lo-Xylene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LStyrene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/01/21 09/02/21AEI00755.3 1 0.50 ug/LToluene EPA 524.2 09/01/21 09/02/21AEI00751.2 1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %96 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %96 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 12 of 21 Certificate of Analysis AEH3240 General SLO-Prop 1 - CJAR Well Sample Description: Trip Blank RAW 0721040 Sample ID: AEH3240-11 08/25/2021 - 00:00 Sampled By: Trip Blank BSK Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LBenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LChlorobenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LDichloromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LEthylbenzene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Lo-Xylene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LStyrene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LToluene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/01/21 09/02/21AEI0075ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/01/21 09/02/21AEI0075ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/01/21 09/02/21AEI0075ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %100 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %100 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 13 of 21 AEH3240 General General Chemistry Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEI0010 Prepared: 9/1/2021 Analyst: SYYPrep Method: Method Specific Preparation SM 2540C - Quality Control Blank (AEI0010-BLK1) Total Dissolved Solids ND mg/L5.0 09/01/21 Blank Spike (AEI0010-BS1) 70-130100Total Dissolved Solids 10001000mg/L 09/01/21 Duplicate (AEI0010-DUP1), Source: AEH3240-01 100Total Dissolved Solids 630 mg/L5.0 630 09/01/21 Duplicate (AEI0010-DUP2), Source: AEH3168-01 102Total Dissolved Solids 560 mg/L5.0 550 09/01/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 14 of 21 AEH3240 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEI0075 Prepared: 9/1/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank (AEI0075-BLK1) 1,1,1-Trichloroethane ND ug/L0.50 09/02/21 1,1,2,2-Tetrachloroethane ND ug/L0.50 09/02/21 1,1,2-Trichloro-1,2,2-trifluoroethane ND ug/L10 09/02/21 1,1,2-Trichloroethane ND ug/L0.50 09/02/21 1,1-Dichloroethane ND ug/L0.50 09/02/21 1,1-Dichloroethene ND ug/L0.50 09/02/21 1,2,4-Trichlorobenzene ND ug/L0.50 09/02/21 1,2-Dichlorobenzene ND ug/L0.50 09/02/21 1,2-Dichloroethane ND ug/L0.50 09/02/21 1,2-Dichloropropane ND ug/L0.50 09/02/21 1,4-Dichlorobenzene ND ug/L0.50 09/02/21 Benzene ND ug/L0.50 09/02/21 Carbon Tetrachloride ND ug/L0.50 09/02/21 Chlorobenzene ND ug/L0.50 09/02/21 cis-1,2-Dichloroethene ND ug/L0.50 09/02/21 cis-1,3-Dichloropropene ND ug/L0.50 09/02/21 Dichloromethane ND ug/L0.50 09/02/21 Ethylbenzene ND ug/L0.50 09/02/21 m,p-Xylenes ND ug/L0.50 09/02/21 Methyl-t-butyl ether ND ug/L0.50 09/02/21 o-Xylene ND ug/L0.50 09/02/21 Styrene ND ug/L0.50 09/02/21 Tetrachloroethene (PCE) ND ug/L0.50 09/02/21 Toluene ND ug/L0.50 09/02/21 trans-1,2-Dichloroethene ND ug/L0.50 09/02/21 trans-1,3-Dichloropropene ND ug/L0.50 09/02/21 Trichloroethene (TCE) ND ug/L0.50 09/02/21 Trichlorofluoromethane ND ug/L5.0 09/02/21 Vinyl Chloride ND ug/L0.50 09/02/21 Total 1,3-Dichloropropene ND ug/L0.50 09/02/21 Total Xylenes ND ug/L0.50 09/02/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 9648 50 09/02/21 70-130Surrogate: Bromofluorobenzene 9648 50 09/02/21 Blank Spike (AEI0075-BS1) 70-130931,1,1-Trichloroethane 109.3 ug/L0.50 ND 09/02/21 70-130861,1,2,2-Tetrachloroethane 108.6 ug/L0.50 ND 09/02/21 70-130941,1,2-Trichloro-1,2,2-trifluoroethane 109.4 ug/L10 ND 09/02/21 70-130901,1,2-Trichloroethane 109.0 ug/L0.50 ND 09/02/21 70-130951,1-Dichloroethane 109.5 ug/L0.50 ND 09/02/21 70-130951,1-Dichloroethene 109.5 ug/L0.50 ND 09/02/21 70-130901,2,4-Trichlorobenzene 109.0 ug/L0.50 ND 09/02/21 70-130931,2-Dichlorobenzene 109.3 ug/L0.50 ND 09/02/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 15 of 21 AEH3240 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEI0075 Prepared: 9/1/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank Spike (AEI0075-BS1) 70-130921,2-Dichloroethane 109.2 ug/L0.50 ND 09/02/21 70-130931,2-Dichloropropane 109.3 ug/L0.50 ND 09/02/21 70-130931,4-Dichlorobenzene 109.3 ug/L0.50 ND 09/02/21 70-13093Benzene109.3 ug/L0.50 ND 09/02/21 70-13094Carbon Tetrachloride 109.4 ug/L0.50 ND 09/02/21 70-13091Chlorobenzene109.1 ug/L0.50 ND 09/02/21 70-13094cis-1,2-Dichloroethene 109.4 ug/L0.50 ND 09/02/21 70-13091cis-1,3-Dichloropropene 109.1 ug/L0.50 ND 09/02/21 70-130108Dichloromethane1011ug/L0.50 ND 09/02/21 70-13092Ethylbenzene109.2 ug/L0.50 ND 09/02/21 70-13094m,p-Xylenes 2019ug/L0.50 ND 09/02/21 70-13088Methyl-t-butyl ether 2018ug/L0.50 ND 09/02/21 70-13094o-Xylene 109.4 ug/L0.50 ND 09/02/21 70-13092Styrene109.2 ug/L0.50 ND 09/02/21 70-13091Tetrachloroethene (PCE)109.1 ug/L0.50 ND 09/02/21 70-13091Toluene109.1 ug/L0.50 ND 09/02/21 70-13096trans-1,2-Dichloroethene 109.6 ug/L0.50 ND 09/02/21 70-13090trans-1,3-Dichloropropene 109.0 ug/L0.50 ND 09/02/21 70-13093Trichloroethene (TCE)109.3 ug/L0.50 ND 09/02/21 70-13097Trichlorofluoromethane109.7 ug/L5.0 ND 09/02/21 70-13089Vinyl Chloride 108.9 ug/L0.50 ND 09/02/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 9849 50 09/02/21 70-130Surrogate: Bromofluorobenzene 9950 50 09/02/21 Blank Spike Dup (AEI0075-BSD1) 3070-13093 11,1,1-Trichloroethane 109.3 ug/L0.50 ND 09/02/21 3070-13088 11,1,2,2-Tetrachloroethane 108.8 ug/L0.50 ND 09/02/21 3070-13094 0 1,1,2-Trichloro-1,2,2-trifluoroethane 109.4 ug/L10 ND 09/02/21 3070-13091 21,1,2-Trichloroethane 109.1 ug/L0.50 ND 09/02/21 3070-13095 11,1-Dichloroethane 109.5 ug/L0.50 ND 09/02/21 3070-13095 01,1-Dichloroethene 109.5 ug/L0.50 ND 09/02/21 3070-13091 21,2,4-Trichlorobenzene 109.1 ug/L0.50 ND 09/02/21 3070-13093 11,2-Dichlorobenzene 109.3 ug/L0.50 ND 09/02/21 3070-13093 21,2-Dichloroethane 109.3 ug/L0.50 ND 09/02/21 3070-13094 11,2-Dichloropropane 109.4 ug/L0.50 ND 09/02/21 3070-13094 11,4-Dichlorobenzene 109.4 ug/L0.50 ND 09/02/21 3070-13093 1Benzene109.3 ug/L0.50 ND 09/02/21 3070-13093 1Carbon Tetrachloride 109.3 ug/L0.50 ND 09/02/21 3070-13091 0Chlorobenzene109.1 ug/L0.50 ND 09/02/21 3070-13094 1cis-1,2-Dichloroethene 109.4 ug/L0.50 ND 09/02/21 3070-13093 2cis-1,3-Dichloropropene 109.3 ug/L0.50 ND 09/02/21 3070-130103 5Dichloromethane1010ug/L0.50 ND 09/02/21 3070-13091 1Ethylbenzene109.1 ug/L0.50 ND 09/02/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 16 of 21 AEH3240 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEI0075 Prepared: 9/1/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank Spike Dup (AEI0075-BSD1) 3070-13093 1m,p-Xylenes 2019ug/L0.50 ND 09/02/21 3070-13090 3Methyl-t-butyl ether 2018ug/L0.50 ND 09/02/21 3070-13094 0o-Xylene 109.4 ug/L0.50 ND 09/02/21 3070-13092 0Styrene109.2 ug/L0.50 ND 09/02/21 3070-13091 1Tetrachloroethene (PCE)109.1 ug/L0.50 ND 09/02/21 3070-13091 0Toluene109.1 ug/L0.50 ND 09/02/21 3070-13097 0trans-1,2-Dichloroethene 109.7 ug/L0.50 ND 09/02/21 3070-13091 2trans-1,3-Dichloropropene 109.1 ug/L0.50 ND 09/02/21 3070-13093 0Trichloroethene (TCE)109.3 ug/L0.50 ND 09/02/21 3070-13097 0Trichlorofluoromethane109.7 ug/L5.0 ND 09/02/21 3070-13088 1Vinyl Chloride 108.8 ug/L0.50 ND 09/02/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 10050 50 09/02/21 70-130Surrogate: Bromofluorobenzene 9849 50 09/02/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 17 of 21 AEH3240 General Certificate of Analysis Notes: • The Chain of Custody document and Sample Integrity Sheet are part of the analytical report. • Any remaining sample(s) for testing will be disposed of according to BSK’s sample retention policy unless other arrangements are made in advance. • All positive results for EPA Methods 504.1 and 524.2 require the analysis of a Field Reagent Blank (FRB) to confirm that the results are not a contamination error from field sampling steps. If Field Reagent Blanks were not submitted with the samples, this method requirement has not been performed. • Samples collected by BSK Analytical Laboratories were collected in accordance with the BSK Sampling and Collection Standard Operating Procedures. • J-value is equivalent to DNQ (Detected, not quantified) which is a trace value. A trace value is an analyte detected between the MDL and the laboratory reporting limit. This result is of an unknown data quality and is only qualitative (estimated). Baseline noise, calibration curve extrapolation below the lowest calibrator, method blank detections, and integration artifacts can all produce apparent DNQ values, which contribute to the un-reliability of these values. • (1) - Residual chlorine and pH analysis have a 15 minute holding time for both drinking and waste water samples as defined by the EPA and 40 CFR 136. Waste water and ground water (monitoring well) samples must be field filtered to meet the 15 minute holding time for dissolved metals. • Field tests are outside the scope of laboratory accreditation and there is no certification available for field testing. • Summations of analytes (i.e. Total Trihalomethanes) may appear to add individual amounts incorrectly, due to rounding of analyte values occurring before or after the total value is calculated, as well as rounding of the total value. • RL Multiplier is the factor used to adjust the reporting limit (RL) due to variations in sample preparation procedures and dilutions required for matrix interferences. • Due to the subjective nature of the Threshold Odor Method, all characterizations of the detected odor are the opinion of the panel of analysts. The characterizations can be found in Standard Methods 2170B Figure 2170:1. • The MCLs provided in this report (if applicable) represent the primary MCLs for that analyte. • (2) - Formerly known as Bis(2-Chloroisopropyl) ether. Definitions mg/L: Milligrams/Liter (ppm) mg/Kg: Milligrams/Kilogram (ppm) g/L: Micrograms/Liter (ppb) g/Kg: Micrograms/Kilogram (ppb) %: Percent NR: Non-Reportable MDL: Method Detection Limit RL: Reporting Limit: DL x Dilution ND: None Detected below MRL/MDL pCi/L: PicoCuries per Liter RL Mult: RL Multiplier MCL: Maximum Contaminant Limit MDA95: Min. Detected Activity MPN: Most Probable Number CFU: Colony Forming Unit Absent: Less than 1 CFU/100mLs Present: 1 or more CFU/100mLs U: The analyte was not detected at or above the reported sample quantitation limit. BSK is not accredited under the NELAP program for the following parameters:**NA** Please see the individual Subcontract Lab’s report for applicable certifications. www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 18 of 21 AEH3240 General Certificate of Analysis Certifications: Please refer to our website for a copy of our Accredited Fields of Testing under each certification. Fresno 1180State of California - ELAP 4021State of Hawaii 9254479Los Angeles CSD 4021-018NELAP certified CA000792022-1State of Nevada 4021-018State of Oregon - NELAP CA00079EPA - UCMR4 C997-21aState of Washington Sacramento 2435State of California - ELAP San Bernardino 2993State of California - ELAP 9254478Los Angeles CSD 4119-006NELAP certified 4119-006State of Oregon - NELAP Vancouver WA100008-014NELAP certified WA100008-014State of Oregon - NELAP C824-20aState of Washington www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH3240 FINAL 09132021 1438 Page 19 of 21 Page 20 of 21 Page 21 of 21 Laboratory Report for BESST Inc. 50 Tiburon Street Suite 7 San Rafael, CA 94901 Attention: Miles Koehler Project Manager Date of Issue 08/29/2021 EUROFINS EATON ANALYTICAL, LLC L6NW: Rachelle Arada 952581 PFAS PFAS Report: Project: Group: 750 Royal Oaks Drive, Suite 100 Monrovia, California 91016-3629 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) * Accredited in accordance with TNI 2016 and ISO/IEC 17025:2017. * Laboratory certifies that the test results meet all TNI 2016 and ISO/IEC 17025:2017 requirements unless noted under the individual analysis. * Following the cover page are State Certification List, ISO 17025 Accredited Method List, Acknowledgement of Samples Received, Comments, Hits Report, Data Report, QC Summary, QC Report and Regulatory Forms, as applicable. * Test results relate only to the sample(s) tested. * Test results apply to the sample(s) as received, unless otherwise noted in the comments report (ISO/IEC 17025:2017). * This report shall not be reproduced except in full, without the written approval of the laboratory. * This report includes ISO/IEC 17025 and non-ISO 17025 accredited methods. Page 1 of 34 pages STATE CERTIFICATION LIST * NELAP/TNI Recognized Accreditation Bodies State Certification Number State Certification Number Alabama 41060 Montana Cert 0035 Arizona AZ0778 Nebraska Certified Arkansas Certified Nevada CA000062018 California 2813 New Hampshire * 2959 Colorado Certified New Jersey * CA 008 Connecticut PH-0107 New Mexico Certified Delaware CA 006 New York * 11320 Florida * E871024 North Carolina 06701 Georgia 947 North Dakota R-009 Guam 18-005R Oregon * CA200003-005 Hawaii Certified Pennsylvania * 68-565 Idaho Certified Puerto Rico Certified Illinois * 200033 Rhode Island LAO00326 Indiana C-CA-01 South Carolina 87016 Iowa - Asbestos 413 South Dakota Certified Kansas * E-10268 Tennessee TN02839 Kentucky 90107 Texas * T104704230-18-15 Louisiana * LA180000 Utah (Primary AB) * CA00006 Maine CA0006 Vermont VT0114 Maryland 224 Virginia * 460260 Commonwealth of Northern Marianas Is. MP0004 Washington C838 Massachusetts M-CA006 EPA Region 5 Certified Michigan 9906 Los Angeles County Sanitation Districts 10264 Mississippi Certified Page 2 of 34 pages ISO/IEC 17025 Accredited Method List SPECIFIC TESTS METHOD OR TECHNIQUE USED Environ- mental (Drinking Water) Environ- mental (Waste Water) Water as a Component of Food and Bev/Bev/ Bottled Water SPECIFIC TESTS METHOD OR TECHNIQUE USED Environ- mental (Drinking Water) Environ- mental (Waste Water) Water as a Component of Food and Bev/Bev/ Bottled Water 1,2,3-TCP (5 PPT & 0.5 PPT)CA SRL 524M-TCP x x Hexavalent Chromium EPA 218.7 x x 1,4-Dioxane EPA 522 x x Hexavalent Chromium SM 3500-Cr B x 2,3,7,8-TCDD Modified EPA 1613B x x Hormones EPA 539 x x Acrylamide In House Method (2440)x x Hydroxide as OH Calc.SM 2330B x x Algal Toxins/Microcystin In House Method (3570)Kjeldahl Nitrogen EPA 351.2 x Alkalinity SM 2320B x x x Legionella Legiolert x x Ammonia EPA 350.1 x x Mercury EPA 200.8 x x Ammonia SM 4500-NH3 H x x Metals EPA 200.7 / 200.8 x x x Anions and DBPs by IC EPA 300.0 x x x Microcystin LR ELISA (2360)x x Anions and DBPs by IC EPA 300.1 x x Microcystin, Total EPA 546 x x Asbestos EPA 100.2 x x NDMA EEA/Agilent 521.1 In house method (2425)x x BOD / CBOD SM 5210B x x Nitrate/Nitrite Nitrogen EPA 353.2 x x x Bromate In House Method (2447)x x OCL, Pesticides/PCB EPA 505 x x Carbamates EPA 531.2 x x Ortho Phosphate EPA 365.1 x x x Carbonate as CO3 SM 2330B x x x Ortho Phosphorous SM 4500P E x x Carbonyls EPA 556 x x Oxyhalides Disinfection Byproducts EPA 317.0 x x COD EPA 410.4 / SM 5220D x Perchlorate EPA 331.0 x x Chloramines SM 4500-CL G x x x Perchlorate (low and high)EPA 314.0 x x Chlorinated Acids EPA 515.4 x x Perfluorinated Alkyl Acids EPA 537 x x Chlorinated Acids EPA 555 x x Perfluorinated Polutant In house Method (2434)x x Chlorine Dioxide SM 4500-CLO2 D Palin Test x x pH EPA 150.1 x Chlorine -Total/Free/ Combined Residual SM 4500-Cl G x x x pH SM 4500-H+B x x x Conductivity EPA 120.1 x Phenylurea Pesticides/ Herbicides In House Method, based on EPA 532 (2448)x x Conductivity SM 2510B x x x Pseudomonas IDEXX Pseudalert (2461)x x Corrosivity (Langelier Index)SM 2330B x x Radium-226 GA Institute of Tech x x Cyanide, Amenable SM 4500-CN G x x Radium-228 GA Institute of Tech x x Cyanide, Free SM 4500CN F x x x Radon-222 SM 7500RN x x Cyanide, Total EPA 335.4 x x x Residue, Filterable SM 2540C x x x Cyanogen Chloride (screen)In House Method (2470)x x Residue, Non-filterable SM 2540D x Diquat and Paraquat EPA 549.2 x x Residue, Total SM 2540B x x DBP/HAA SM 6251B x x Residue, Volatile EPA 160.4 x Dissolved Oxygen SM 4500-O G x x Semi-VOC EPA 525.2 x x DOC SM 5310C x x Silica SM 4500-Si D x x E. Coli (MTF/EC+MUG)x x Silica SM 4500-SiO2 C x x E. Coli CFR 141.21(f)(6)(i)x x Sulfide SM 4500-S= D x E. Coli SM 9223 x Sulfite SM 4500-SO3B x x x E. Coli (Enumeration)SM 9221B.1/ SM 9221F x x Surfactants SM 5540C x x x E. Coli (Enumeration)SM 9223B x x Taste and Odor Analytes SM 6040E x x EDB/DCBP EPA 504.1 x Total Coliform (P/A)SM 9221 A, B x x EDB/DBCP and DBP EPA 551.1 x x Total Coliform (Enumeration)SM 9221 A, B, C x x EDTA and NTA In House Method (2454)x x Total Coliform / E. coli Colisure SM 9223 x x Endothall EPA 548.1 x x Total Coliform SM 9221B x Endothall In-house Method (2445)x x Total Coliform with Chlorine Present SM 9221B x Enterococci SM 9230B x x Total Coliform / E.coli (P/A and Enumeration)SM 9223 x x Fecal Coliform SM 9221 E (MTF/EC)x TOC SM 5310C x x x Fecal Coliform SM 9221C, E (MTF/EC)x TOX SM 5320B x Fecal Coliform (Enumeration)SM 9221E (MTF/EC)x x Total Phenols EPA 420.1 x Fecal Coliform with Chlorine Present SM 9221E x Total Phenols EPA 420.4 x x x Fecal Streptococci SM 9230B x x Total Phosphorous SM 4500 P E x Fluoride SM 4500-F C x x x Triazine Pesticides & Degradates In House (3617)x x Glyphosate EPA 547 x x Turbidity EPA 180.1 x x x Glyphosate + AMPA In House Method (3618)x x Turbidity SM 2130B x x Gross Alpha/Beta EPA 900.0 x x x Uranium by ICP/MS EPA 200.8 x x Gross Alpha Coprecipitation SM 7110 C x x x UV 254 SM 5910B x Hardness SM 2340B x x x VOC EPA 524.2 x x Heterotrophic Bacteria In House Method (2439)x x VOC In House Method (2411)x x Heterotrophic Bacteria SM 9215 B x x Yeast and Mold SM 9610 x x Hexavalent Chromium EPA 218.6 x x x Field Sampling N/A The tests listed below are accredited and meet the requirements of ISO/IEC 17025 as verified by the ANSI-ASQ National Accreditation Board/A2LA. Refer to Certificate and scope of accreditation (5890) found at: https://www.eurofinsus.com/Eaton 750 Royal Oaks Dr., Ste 100, Monrovia, CA 91016 Tel (626) 386-1100 Fax (866) 988-3757 https://www.eurofinsus.com/Eaton Version 006 Issued: 05/04/20 Page 3 of 34 pages Acknowledgement of Samples Received BESSTINC-CA 952581 PFAS PFAS Client ID: Folder #: Project: Sample Group: Addr:BESST Inc. 50 Tiburon Street Suite 7 San Rafael, CA 94901 Project Manager: Phone: PO #: Rachelle Arada 626-386-1106 SLOPROD1 Attn: Phone: Miles Koehler 415-453-2501 The following samples were received from you on August 14, 2021 at 13:26. They have been scheduled for the tests listed below each sample. If this information is incorrect, please contact your service representative. Thank you for using Eurofins Eaton Analytical, LLC. Sample #Sample ID Sample Date 202108160111 08/13/2021 0930PacBeach-125-081321 @537.1 202108160113 08/13/2021 0952PacBeach-115-081321 @537.1 202108160114 08/13/2021 1015PacBeach-115-081321-Dup @537.1 202108160115 08/13/2021 1040PacBeach-105-081321 @537.1 202108160116 08/13/2021 1100PacBeach-95-081321 @537.1 202108160117 08/13/2021 1120PacBeach-85-081321 @537.1 202108160118 08/13/2021 1145PacBeach-75-081321 @537.1 202108160119 08/13/2021 1208PacBeach-65-081321 @537.1 202108160120 08/13/2021 1235PacBeach-55-081321 @537.1 202108160121 08/13/2021 1255PacBeach-45-081321 @537.1 202108160122 08/13/2021 1325PacBeach-081321-Equip Blank @537.1 202108160124 08/13/2021 1325Field Blank-081321 - HOLD @537.1 FB Test Description Reported: 08/29/2021 Page 1 of 2 750 Royal Oaks Drive, Suite 100, Monrovia, CA 91016 Tel (626) 386-1100 Fax (866) 988-3757 www.EurofinsUS.com/Eaton Page 4 of 34 pages Acknowledgement of Samples Received BESSTINC-CA 952581 PFAS PFAS Client ID: Folder #: Project: Sample Group: Addr:BESST Inc. 50 Tiburon Street Suite 7 San Rafael, CA 94901 Project Manager: Phone: PO #: Rachelle Arada 626-386-1106 SLOPROD1 Attn: Phone: Miles Koehler 415-453-2501 The following samples were received from you on August 14, 2021 at 13:26. They have been scheduled for the tests listed below each sample. If this information is incorrect, please contact your service representative. Thank you for using Eurofins Eaton Analytical, LLC. Sample #Sample ID Sample Date @537.1 -- EPA Method 537.1 @537.1 FB -- EPA Method 537.1 Reported: 08/29/2021 Page 2 of 2 750 Royal Oaks Drive, Suite 100, Monrovia, CA 91016 Tel (626) 386-1100 Fax (866) 988-3757 www.EurofinsUS.com/Eaton Page 5 of 34 pages Page 6 of 34 pages Page 7 of 34 pages Laboratory Comments BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: Comments - Page 1 of 1The Comments Report may be blank if there are no comments for this report. Page 8 of 34 pages Laboratory Hits Samples Received on: 08/14/2021 13:26 BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: Analyzed Analyte Result Units MRLFederal MCLSample ID 202108160111 PacBeach-125-081321 08/18/2021 16:14 Perfluorobutanesulfonic acid (PFBS)ug/L0.0034 0.0020 202108160113 PacBeach-115-081321 08/18/2021 17:21 Perfluorobutanesulfonic acid (PFBS)ug/L0.0034 0.0020 202108160114 PacBeach-115-081321-Dup 08/18/2021 17:31 Perfluorobutanesulfonic acid (PFBS)ug/L0.0034 0.0020 202108160115 PacBeach-105-081321 08/18/2021 21:49 Perfluorobutanesulfonic acid (PFBS)ug/L0.0033 0.0020 202108160116 PacBeach-95-081321 08/18/2021 17:40 Perfluorobutanesulfonic acid (PFBS)ug/L0.0034 0.0020 202108160117 PacBeach-85-081321 08/18/2021 17:50 Perfluorobutanesulfonic acid (PFBS)ug/L0.0035 0.0020 202108160118 PacBeach-75-081321 08/18/2021 18:00 Perfluorobutanesulfonic acid (PFBS)ug/L0.0035 0.0020 202108160119 PacBeach-65-081321 08/18/2021 18:20 Perfluorobutanesulfonic acid (PFBS)ug/L0.0035 0.0020 202108160120 PacBeach-55-081321 08/18/2021 18:31 Perfluorobutanesulfonic acid (PFBS)ug/L0.0035 0.0020 202108160121 PacBeach-45-081321 08/18/2021 16:33 Perfluorobutanesulfonic acid (PFBS)ug/L0.0034 0.0020 202108160122 PacBeach-081321-Equip Blank 08/18/2021 18:41 Perfluorohexanoic acid (PFHxA)ug/L0.0022 0.0020 Hits Report - Page 1 of 1SUMMARY OF POSITIVE DATA ONLY Page 9 of 34 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/14/2021 13:26 952581 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch PacBeach-125-081321 (202108160111)Sampled on 08/13/2021 0930 EPA 537.1 - EPA Method 537.1 08/17/21 1349381 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.0034 08/18/21 16:14 1348393 08/17/21 1349381 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:14 1348393 08/17/21 1349381 13C2-PFDA %(EPA 537.1)1103 08/18/21 16:14 1348393 08/17/21 1349381 13C2-PFHxA %(EPA 537.1)1107 08/18/21 16:14 1348393 08/17/21 1349381 13C2-PFOA– IS#1 %(EPA 537.1)1103 08/18/21 16:14 1348393 08/17/21 1349381 13C3-HFPO-DA %(EPA 537.1)1101 08/18/21 16:14 1348393 08/17/21 1349381 13C4-PFOS– IS#2 %(EPA 537.1)1102 08/18/21 16:14 1348393 08/17/21 1349381 d3-NMeFOSAA %(EPA 537.1)1104 08/18/21 16:14 1348393 08/17/21 1349381 d5-NEtFOSAA %(EPA 537.1)196 08/18/21 16:14 1348393 PacBeach-115-081321 (202108160113)Sampled on 08/13/2021 0952 EPA 537.1 - EPA Method 537.1 08/17/21 1349381 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 Data Report - Page 1 of 11 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 10 of 34 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/14/2021 13:26 952581 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/17/21 1349381 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.0034 08/18/21 17:21 1348393 08/17/21 1349381 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:21 1348393 08/17/21 1349381 13C2-PFDA %(EPA 537.1)199 08/18/21 17:21 1348393 08/17/21 1349381 13C2-PFHxA %(EPA 537.1)1107 08/18/21 17:21 1348393 08/17/21 1349381 13C2-PFOA– IS#1 %(EPA 537.1)1103 08/18/21 17:21 1348393 08/17/21 1349381 13C3-HFPO-DA %(EPA 537.1)1101 08/18/21 17:21 1348393 08/17/21 1349381 13C4-PFOS– IS#2 %(EPA 537.1)1100 08/18/21 17:21 1348393 08/17/21 1349381 d3-NMeFOSAA %(EPA 537.1)198 08/18/21 17:21 1348393 08/17/21 1349381 d5-NEtFOSAA %(EPA 537.1)197 08/18/21 17:21 1348393 PacBeach-115-081321-Dup (202108160114)Sampled on 08/13/2021 1015 EPA 537.1 - EPA Method 537.1 08/17/21 1349381 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 Data Report - Page 2 of 11 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 11 of 34 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/14/2021 13:26 952581 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/17/21 1349381 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.0034 08/18/21 17:31 1348393 08/17/21 1349381 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:31 1348393 08/17/21 1349381 13C2-PFDA %(EPA 537.1)198 08/18/21 17:31 1348393 08/17/21 1349381 13C2-PFHxA %(EPA 537.1)1107 08/18/21 17:31 1348393 08/17/21 1349381 13C2-PFOA– IS#1 %(EPA 537.1)1102 08/18/21 17:31 1348393 08/17/21 1349381 13C3-HFPO-DA %(EPA 537.1)1103 08/18/21 17:31 1348393 08/17/21 1349381 13C4-PFOS– IS#2 %(EPA 537.1)1102 08/18/21 17:31 1348393 08/17/21 1349381 d3-NMeFOSAA %(EPA 537.1)1101 08/18/21 17:31 1348393 08/17/21 1349381 d5-NEtFOSAA %(EPA 537.1)196 08/18/21 17:31 1348393 PacBeach-105-081321 (202108160115)Sampled on 08/13/2021 1040 EPA 537.1 - EPA Method 537.1 08/17/21 1349383 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.0033 08/18/21 21:49 1348566 08/17/21 1349383 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 Data Report - Page 3 of 11 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 12 of 34 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/14/2021 13:26 952581 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/17/21 1349383 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 21:49 1348566 08/17/21 1349383 13C2-PFDA %(EPA 537.1)197 08/18/21 21:49 1348566 08/17/21 1349383 13C2-PFHxA %(EPA 537.1)1100 08/18/21 21:49 1348566 08/17/21 1349383 13C2-PFOA– IS#1 %(EPA 537.1)1104 08/18/21 21:49 1348566 08/17/21 1349383 13C3-HFPO-DA %(EPA 537.1)196 08/18/21 21:49 1348566 08/17/21 1349383 13C4-PFOS– IS#2 %(EPA 537.1)1104 08/18/21 21:49 1348566 08/17/21 1349383 d3-NMeFOSAA %(EPA 537.1)1102 08/18/21 21:49 1348566 08/17/21 1349383 d5-NEtFOSAA %(EPA 537.1)193 08/18/21 21:49 1348566 PacBeach-95-081321 (202108160116)Sampled on 08/13/2021 1100 EPA 537.1 - EPA Method 537.1 08/17/21 1349381 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.0034 08/18/21 17:40 1348393 08/17/21 1349381 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 08/17/21 1349381 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:40 1348393 Data Report - Page 4 of 11 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 13 of 34 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/14/2021 13:26 952581 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/17/21 1349381 13C2-PFDA %(EPA 537.1)196 08/18/21 17:40 1348393 08/17/21 1349381 13C2-PFHxA %(EPA 537.1)1101 08/18/21 17:40 1348393 08/17/21 1349381 13C2-PFOA– IS#1 %(EPA 537.1)1106 08/18/21 17:40 1348393 08/17/21 1349381 13C3-HFPO-DA %(EPA 537.1)197 08/18/21 17:40 1348393 08/17/21 1349381 13C4-PFOS– IS#2 %(EPA 537.1)199 08/18/21 17:40 1348393 08/17/21 1349381 d3-NMeFOSAA %(EPA 537.1)196 08/18/21 17:40 1348393 08/17/21 1349381 d5-NEtFOSAA %(EPA 537.1)197 08/18/21 17:40 1348393 PacBeach-85-081321 (202108160117)Sampled on 08/13/2021 1120 EPA 537.1 - EPA Method 537.1 08/17/21 1349381 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.0035 08/18/21 17:50 1348393 08/17/21 1349381 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 17:50 1348393 08/17/21 1349381 13C2-PFDA %(EPA 537.1)1100 08/18/21 17:50 1348393 08/17/21 1349381 13C2-PFHxA %(EPA 537.1)1109 08/18/21 17:50 1348393 08/17/21 1349381 13C2-PFOA– IS#1 %(EPA 537.1)1102 08/18/21 17:50 1348393 08/17/21 1349381 13C3-HFPO-DA %(EPA 537.1)1103 08/18/21 17:50 1348393 08/17/21 1349381 13C4-PFOS– IS#2 %(EPA 537.1)197 08/18/21 17:50 1348393 08/17/21 1349381 d3-NMeFOSAA %(EPA 537.1)199 08/18/21 17:50 1348393 Data Report - Page 5 of 11 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 14 of 34 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/14/2021 13:26 952581 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/17/21 1349381 d5-NEtFOSAA %(EPA 537.1)197 08/18/21 17:50 1348393 PacBeach-75-081321 (202108160118)Sampled on 08/13/2021 1145 EPA 537.1 - EPA Method 537.1 08/17/21 1349381 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.0035 08/18/21 18:00 1348393 08/17/21 1349381 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:00 1348393 08/17/21 1349381 13C2-PFDA %(EPA 537.1)196 08/18/21 18:00 1348393 08/17/21 1349381 13C2-PFHxA %(EPA 537.1)1103 08/18/21 18:00 1348393 08/17/21 1349381 13C2-PFOA– IS#1 %(EPA 537.1)1106 08/18/21 18:00 1348393 08/17/21 1349381 13C3-HFPO-DA %(EPA 537.1)1100 08/18/21 18:00 1348393 08/17/21 1349381 13C4-PFOS– IS#2 %(EPA 537.1)1100 08/18/21 18:00 1348393 08/17/21 1349381 d3-NMeFOSAA %(EPA 537.1)199 08/18/21 18:00 1348393 08/17/21 1349381 d5-NEtFOSAA %(EPA 537.1)194 08/18/21 18:00 1348393 PacBeach-65-081321 (202108160119)Sampled on 08/13/2021 1208 EPA 537.1 - EPA Method 537.1 08/17/21 1349381 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 Data Report - Page 6 of 11 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 15 of 34 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/14/2021 13:26 952581 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/17/21 1349381 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.0035 08/18/21 18:20 1348393 08/17/21 1349381 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:20 1348393 08/17/21 1349381 13C2-PFDA %(EPA 537.1)191 08/18/21 18:20 1348393 08/17/21 1349381 13C2-PFHxA %(EPA 537.1)1104 08/18/21 18:20 1348393 08/17/21 1349381 13C2-PFOA– IS#1 %(EPA 537.1)1104 08/18/21 18:20 1348393 08/17/21 1349381 13C3-HFPO-DA %(EPA 537.1)1101 08/18/21 18:20 1348393 08/17/21 1349381 13C4-PFOS– IS#2 %(EPA 537.1)1101 08/18/21 18:20 1348393 08/17/21 1349381 d3-NMeFOSAA %(EPA 537.1)192 08/18/21 18:20 1348393 08/17/21 1349381 d5-NEtFOSAA %(EPA 537.1)193 08/18/21 18:20 1348393 PacBeach-55-081321 (202108160120)Sampled on 08/13/2021 1235 EPA 537.1 - EPA Method 537.1 08/17/21 1349381 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 Data Report - Page 7 of 11 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 16 of 34 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/14/2021 13:26 952581 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/17/21 1349381 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.0035 08/18/21 18:31 1348393 08/17/21 1349381 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:31 1348393 08/17/21 1349381 13C2-PFDA %(EPA 537.1)197 08/18/21 18:31 1348393 08/17/21 1349381 13C2-PFHxA %(EPA 537.1)1105 08/18/21 18:31 1348393 08/17/21 1349381 13C2-PFOA– IS#1 %(EPA 537.1)1102 08/18/21 18:31 1348393 08/17/21 1349381 13C3-HFPO-DA %(EPA 537.1)1104 08/18/21 18:31 1348393 08/17/21 1349381 13C4-PFOS– IS#2 %(EPA 537.1)197 08/18/21 18:31 1348393 08/17/21 1349381 d3-NMeFOSAA %(EPA 537.1)194 08/18/21 18:31 1348393 08/17/21 1349381 d5-NEtFOSAA %(EPA 537.1)195 08/18/21 18:31 1348393 PacBeach-45-081321 (202108160121)Sampled on 08/13/2021 1255 EPA 537.1 - EPA Method 537.1 08/17/21 1349381 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.0034 08/18/21 16:33 1348393 08/17/21 1349381 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 Data Report - Page 8 of 11 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 17 of 34 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/14/2021 13:26 952581 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/17/21 1349381 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 16:33 1348393 08/17/21 1349381 13C2-PFDA %(EPA 537.1)195 08/18/21 16:33 1348393 08/17/21 1349381 13C2-PFHxA %(EPA 537.1)1106 08/18/21 16:33 1348393 08/17/21 1349381 13C2-PFOA– IS#1 %(EPA 537.1)1105 08/18/21 16:33 1348393 08/17/21 1349381 13C3-HFPO-DA %(EPA 537.1)198 08/18/21 16:33 1348393 08/17/21 1349381 13C4-PFOS– IS#2 %(EPA 537.1)1100 08/18/21 16:33 1348393 08/17/21 1349381 d3-NMeFOSAA %(EPA 537.1)1101 08/18/21 16:33 1348393 08/17/21 1349381 d5-NEtFOSAA %(EPA 537.1)192 08/18/21 16:33 1348393 PacBeach-081321-Equip Blank (202108160122)Sampled on 08/13/2021 1325 EPA 537.1 - EPA Method 537.1 08/17/21 1349381 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0022 08/18/21 18:41 1348393 08/17/21 1349381 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 Data Report - Page 9 of 11 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 18 of 34 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/14/2021 13:26 952581 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/17/21 1349381 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/18/21 18:41 1348393 08/17/21 1349381 13C2-PFDA %(EPA 537.1)1101 08/18/21 18:41 1348393 08/17/21 1349381 13C2-PFHxA %(EPA 537.1)1107 08/18/21 18:41 1348393 08/17/21 1349381 13C2-PFOA– IS#1 %(EPA 537.1)1104 08/18/21 18:41 1348393 08/17/21 1349381 13C3-HFPO-DA %(EPA 537.1)1102 08/18/21 18:41 1348393 08/17/21 1349381 13C4-PFOS– IS#2 %(EPA 537.1)1101 08/18/21 18:41 1348393 08/17/21 1349381 d3-NMeFOSAA %(EPA 537.1)1100 08/18/21 18:41 1348393 08/17/21 1349381 d5-NEtFOSAA %(EPA 537.1)190 08/18/21 18:41 1348393 Field Blank-081321 - HOLD (202108160124)Sampled on 08/13/2021 1325 EPA 537.1 - EPA Method 537.1 08/23/21 1350980 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 17:46 1349764 08/23/21 1350980 13C2-PFDA %(EPA 537.1)1108 08/26/21 17:46 1349764 08/23/21 1350980 13C2-PFHxA %(EPA 537.1)1108 08/26/21 17:46 1349764 08/23/21 1350980 13C2-PFOA– IS#1 %(EPA 537.1)1113 08/26/21 17:46 1349764 08/23/21 1350980 13C3-HFPO-DA %(EPA 537.1)196 08/26/21 17:46 1349764 08/23/21 1350980 13C4-PFOS– IS#2 %(EPA 537.1)1103 08/26/21 17:46 1349764 Data Report - Page 10 of 11 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 19 of 34 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/14/2021 13:26 952581 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/23/21 1350980 d3-NMeFOSAA %(EPA 537.1)1119 08/26/21 17:46 1349764 08/23/21 1350980 d5-NEtFOSAA %(EPA 537.1)199 08/26/21 17:46 1349764 Data Report - Page 11 of 11 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 20 of 34 pages Laboratory QC Summary BESST Inc. Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: EPA Method 537.1 Analysis Date: 08/18/2021Prep Batch: 1348393 Analytical Batch: 1349381 PacBeach-125-081321202108160111 Analyzed by: KAM PacBeach-115-081321202108160113 Analyzed by: KAM PacBeach-115-081321-Dup202108160114 Analyzed by: KAM PacBeach-95-081321202108160116 Analyzed by: KAM PacBeach-85-081321202108160117 Analyzed by: KAM PacBeach-75-081321202108160118 Analyzed by: KAM PacBeach-65-081321202108160119 Analyzed by: KAM PacBeach-55-081321202108160120 Analyzed by: KAM PacBeach-45-081321202108160121 Analyzed by: KAM PacBeach-081321-Equip Blank202108160122 Analyzed by: KAM EPA Method 537.1 Analysis Date: 08/18/2021Prep Batch: 1348566 Analytical Batch: 1349383 PacBeach-105-081321202108160115 Analyzed by: KAM EPA Method 537.1 Analysis Date: 08/26/2021Prep Batch: 1349764 Analytical Batch: 1350980 Field Blank-081321 - HOLD202108160124 Analyzed by: KAM QC Summary - Page 1 of 1 Page 21 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: EPA Method 537.1 by EPA 537.1 Analysis Date: 08/18/2021Prep Batch: 1348393 Analytical Batch: 1349381 DUP_202108160121 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid ND ug/L (0-30)ND LCS1 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0260 ug/L 110 (70-130) LCS2 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0279 ug/L 118 (70-130)7.030 MBLK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid <0.000667 ug/L MRL_CHK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.0019 0.00206 ug/L 110 (50-150) MS1_202108160111 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0269 ug/L 114 (70-130)ND DUP_202108160121 13C2-PFDA (S)96.4 %96 (70-130) LCS1 13C2-PFDA (S)100 97.3 %97 (70-130) LCS2 13C2-PFDA (S)100 98.5 %98 (70-130) MBLK 13C2-PFDA (S)95.2 %95 (70-130) MRL_CHK 13C2-PFDA (S)100 100 %101 (70-130) MS1_202108160111 13C2-PFDA (S)100 98.9 %99 (70-130) DUP_202108160121 13C2-PFHxA (S)104 %104 (70-130) LCS1 13C2-PFHxA (S)100 105 %105 (70-130) LCS2 13C2-PFHxA (S)100 101 %101 (70-130) MBLK 13C2-PFHxA (S)98.8 %99 (70-130) MRL_CHK 13C2-PFHxA (S)100 102 %102 (70-130) MS1_202108160111 13C2-PFHxA (S)100 105 %105 (70-130) DUP_202108160121 13C2-PFOA– IS#1 (I)105 %105 (50-150) LCS1 13C2-PFOA– IS#1 (I)100 104 %104 (50-150) LCS2 13C2-PFOA– IS#1 (I)100 103 %103 (50-150) MBLK 13C2-PFOA– IS#1 (I)105 %105 (50-150) MRL_CHK 13C2-PFOA– IS#1 (I)100 105 %105 (50-150) MS1_202108160111 13C2-PFOA– IS#1 (I)100 103 %103 (50-150) DUP_202108160121 13C3-HFPO-DA (S)99.1 %99 (70-130) LCS1 13C3-HFPO-DA (S)100 100 %100 (70-130) LCS2 13C3-HFPO-DA (S)100 97.5 %98 (70-130) MBLK 13C3-HFPO-DA (S)94.5 %94 (70-130) MRL_CHK 13C3-HFPO-DA (S)100 100 %100 (70-130) MS1_202108160111 13C3-HFPO-DA (S)100 102 %102 (70-130) DUP_202108160121 13C4-PFOS– IS#2 (I)99.7 %100 (50-150) LCS1 13C4-PFOS– IS#2 (I)100 102 %102 (50-150) LCS2 13C4-PFOS– IS#2 (I)100 97.8 %98 (50-150) MBLK 13C4-PFOS– IS#2 (I)101 %101 (50-150) MRL_CHK 13C4-PFOS– IS#2 (I)100 101 %101 (50-150) QC Report - Page 1 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 22 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: MS1_202108160111 13C4-PFOS– IS#2 (I)100 101 %101 (50-150) DUP_202108160121 4,8-dioxa-3H-perfluorononanoic acid (ADONA)ND ug/L (0-30)ND LCS1 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0267 ug/L 113 (70-130) LCS2 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0266 ug/L 113 (70-130)0.3830 MBLK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)<0.000667 ug/L MRL_CHK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00220 ug/L 116 (50-150) MS1_202108160111 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0278 ug/L 118 (70-130)ND DUP_202108160121 9-chlorohexadecafluoro-3-oxanone-sulfonic acid ND ug/L (0-30)ND LCS1 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0256 ug/L 110 (70-130) LCS2 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0264 ug/L 113 (70-130)3.130 MBLK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid <0.000667 ug/L MRL_CHK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00206 ug/L 111 (50-150) MS1_202108160111 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0254 ug/L 109 (70-130)ND DUP_202108160121 d3-NMeFOSAA (I)102 %102 (50-150) LCS1 d3-NMeFOSAA (I)100 102 %102 (50-150) LCS2 d3-NMeFOSAA (I)100 101 %101 (50-150) MBLK d3-NMeFOSAA (I)100 %100 (50-150) MRL_CHK d3-NMeFOSAA (I)100 103 %103 (50-150) MS1_202108160111 d3-NMeFOSAA (I)100 106 %107 (50-150) DUP_202108160121 d5-NEtFOSAA (S)94.2 %94 (70-130) LCS1 d5-NEtFOSAA (S)100 90.7 %91 (70-130) LCS2 d5-NEtFOSAA (S)100 91.7 %92 (70-130) MBLK d5-NEtFOSAA (S)91.6 %92 (70-130) MRL_CHK d5-NEtFOSAA (S)100 96.1 %96 (70-130) MS1_202108160111 d5-NEtFOSAA (S)100 90.4 %90 (70-130) DUP_202108160121 Hexafluoropropylene oxide dimer acid (HFPO-DA)ND ug/L (0-30)ND LCS1 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0270 ug/L 108 (70-130) LCS2 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0274 ug/L 110 (70-130)1.530 MBLK Hexafluoropropylene oxide dimer acid (HFPO-DA)<0.000667 ug/L MRL_CHK Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00221 ug/L 111 (50-150) MS1_202108160111 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0282 ug/L 113 (70-130)ND DUP_202108160121 N-ethyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS1 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0264 ug/L 106 (70-130) LCS2 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0277 ug/L 111 (70-130)4.830 MBLK N-ethyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00222 ug/L 111 (50-150) MS1_202108160111 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0275 ug/L 110 (70-130)ND DUP_202108160121 N-methyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND QC Report - Page 2 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 23 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: LCS1 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0262 ug/L 105 (70-130) LCS2 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0272 ug/L 109 (70-130)3.830 MBLK N-methyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-methyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00216 ug/L 108 (50-150) MS1_202108160111 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0277 ug/L 111 (70-130)ND DUP_202108160121 Perfluorobutanesulfonic acid (PFBS)0.00345 ug/L (0-30)0.0034 LCS1 Perfluorobutanesulfonic acid (PFBS)0.022 0.0246 ug/L 111 (70-130) LCS2 Perfluorobutanesulfonic acid (PFBS)0.022 0.0260 ug/L 117 (70-130)5.530 MBLK Perfluorobutanesulfonic acid (PFBS)<0.000667 ug/L MRL_CHK Perfluorobutanesulfonic acid (PFBS)0.0018 0.00206 ug/L 116 (50-150) MS1_202108160111 Perfluorobutanesulfonic acid (PFBS)0.022 0.0285 ug/L 113 (70-130)0.0034 DUP_202108160121 Perfluorodecanoic acid (PFDA)ND ug/L (0-30)ND LCS1 Perfluorodecanoic acid (PFDA)0.025 0.0274 ug/L 110 (70-130) LCS2 Perfluorodecanoic acid (PFDA)0.025 0.0276 ug/L 110 (70-130)0.3630 MBLK Perfluorodecanoic acid (PFDA)<0.000667 ug/L MRL_CHK Perfluorodecanoic acid (PFDA)0.002 0.00228 ug/L 114 (50-150) MS1_202108160111 Perfluorodecanoic acid (PFDA)0.025 0.0281 ug/L 112 (70-130)ND DUP_202108160121 Perfluorododecanoic acid (PFDoA)ND ug/L (0-30)ND LCS1 Perfluorododecanoic acid (PFDoA)0.025 0.0274 ug/L 110 (70-130) LCS2 Perfluorododecanoic acid (PFDoA)0.025 0.0286 ug/L 114 (70-130)4.330 MBLK Perfluorododecanoic acid (PFDoA)<0.000667 ug/L MRL_CHK Perfluorododecanoic acid (PFDoA)0.002 0.00221 ug/L 110 (50-150) MS1_202108160111 Perfluorododecanoic acid (PFDoA)0.025 0.0289 ug/L 115 (70-130)ND DUP_202108160121 Perfluoroheptanoic acid (PFHpA)ND ug/L (0-30)ND LCS1 Perfluoroheptanoic acid (PFHpA)0.025 0.0282 ug/L 113 (70-130) LCS2 Perfluoroheptanoic acid (PFHpA)0.025 0.0283 ug/L 113 (70-130)0.3530 MBLK Perfluoroheptanoic acid (PFHpA)<0.000667 ug/L MRL_CHK Perfluoroheptanoic acid (PFHpA)0.002 0.00240 ug/L 120 (50-150) MS1_202108160111 Perfluoroheptanoic acid (PFHpA)0.025 0.0291 ug/L 116 (70-130)ND DUP_202108160121 Perfluorohexanesulfonic acid (PFHxS)ND ug/L (0-30)ND LCS1 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0261 ug/L 115 (70-130) LCS2 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0272 ug/L 119 (70-130)4.130 MBLK Perfluorohexanesulfonic acid (PFHxS)<0.000667 ug/L MRL_CHK Perfluorohexanesulfonic acid (PFHxS)0.0018 0.00214 ug/L 117 (50-150) MS1_202108160111 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0266 ug/L 115 (70-130)ND DUP_202108160121 Perfluorohexanoic acid (PFHxA)ND ug/L (0-30)ND LCS1 Perfluorohexanoic acid (PFHxA)0.025 0.0279 ug/L 112 (70-130) LCS2 Perfluorohexanoic acid (PFHxA)0.025 0.0280 ug/L 112 (70-130)0.3630 QC Report - Page 3 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 24 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: MBLK Perfluorohexanoic acid (PFHxA)<0.000667 ug/L MRL_CHK Perfluorohexanoic acid (PFHxA)0.002 0.00233 ug/L 117 (50-150) MS1_202108160111 Perfluorohexanoic acid (PFHxA)0.025 0.0285 ug/L 114 (70-130)ND DUP_202108160121 Perfluorononanoic acid (PFNA)ND ug/L (0-30)ND LCS1 Perfluorononanoic acid (PFNA)0.025 0.0288 ug/L 115 (70-130) LCS2 Perfluorononanoic acid (PFNA)0.025 0.0287 ug/L 115 (70-130)0.3530 MBLK Perfluorononanoic acid (PFNA)<0.000667 ug/L MRL_CHK Perfluorononanoic acid (PFNA)0.002 0.00228 ug/L 114 (50-150) MS1_202108160111 Perfluorononanoic acid (PFNA)0.025 0.0287 ug/L 115 (70-130)ND DUP_202108160121 Perfluorooctanesulfonic acid (PFOS)ND ug/L (0-30)ND LCS1 Perfluorooctanesulfonic acid (PFOS)0.023 0.0255 ug/L 110 (70-130) LCS2 Perfluorooctanesulfonic acid (PFOS)0.023 0.0263 ug/L 113 (70-130)3.130 MBLK Perfluorooctanesulfonic acid (PFOS)<0.000667 ug/L MRL_CHK Perfluorooctanesulfonic acid (PFOS)0.0019 0.00221 ug/L 120 (50-150) MS1_202108160111 Perfluorooctanesulfonic acid (PFOS)0.023 0.0259 ug/L 110 (70-130)ND DUP_202108160121 Perfluorooctanoic acid (PFOA)ND ug/L (0-30)ND LCS1 Perfluorooctanoic acid (PFOA)0.025 0.0284 ug/L 113 (70-130) LCS2 Perfluorooctanoic acid (PFOA)0.025 0.0288 ug/L 115 (70-130)1.430 MBLK Perfluorooctanoic acid (PFOA)<0.000667 ug/L MRL_CHK Perfluorooctanoic acid (PFOA)0.002 0.00241 ug/L 121 (50-150) MS1_202108160111 Perfluorooctanoic acid (PFOA)0.025 0.0292 ug/L 116 (70-130)ND DUP_202108160121 Perfluorotetradecanoic acid (PFTA)ND ug/L (0-30)ND LCS1 Perfluorotetradecanoic acid (PFTA)0.025 0.0291 ug/L 116 (70-130) LCS2 Perfluorotetradecanoic acid (PFTA)0.025 0.0299 ug/L 120 (70-130)2.730 MBLK Perfluorotetradecanoic acid (PFTA)<0.000667 ug/L MRL_CHK Perfluorotetradecanoic acid (PFTA)0.002 0.00256 ug/L 128 (50-150) MS1_202108160111 Perfluorotetradecanoic acid (PFTA)0.025 0.0307 ug/L 121 (70-130)ND DUP_202108160121 Perfluorotridecanoic acid (PFTrDA)ND ug/L (0-30)ND LCS1 Perfluorotridecanoic acid (PFTrDA)0.025 0.0276 ug/L 110 (70-130) LCS2 Perfluorotridecanoic acid (PFTrDA)0.025 0.0290 ug/L 116 (70-130)5.030 MBLK Perfluorotridecanoic acid (PFTrDA)<0.000667 ug/L MRL_CHK Perfluorotridecanoic acid (PFTrDA)0.002 0.00218 ug/L 109 (50-150) MS1_202108160111 Perfluorotridecanoic acid (PFTrDA)0.025 0.0282 ug/L 113 (70-130)ND DUP_202108160121 Perfluoroundecanoic acid (PFUnA)ND ug/L (0-30)ND LCS1 Perfluoroundecanoic acid (PFUnA)0.025 0.0274 ug/L 110 (70-130) LCS2 Perfluoroundecanoic acid (PFUnA)0.025 0.0287 ug/L 115 (70-130)4.630 MBLK Perfluoroundecanoic acid (PFUnA)<0.000667 ug/L MRL_CHK Perfluoroundecanoic acid (PFUnA)0.002 0.00221 ug/L 111 (50-150) QC Report - Page 4 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 25 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: MS1_202108160111 Perfluoroundecanoic acid (PFUnA)0.025 0.0285 ug/L 114 (70-130)ND EPA Method 537.1 by EPA 537.1 Analysis Date: 08/18/2021Prep Batch: 1348566 Analytical Batch: 1349383 DUP_202108180321 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid ND ug/L (0-30)ND LCS3 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.047 0.0483 ug/L 103 (70-130) LCS4 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.047 0.0496 ug/L 105 (70-130)2.730 MBLK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid <0.000667 ug/L MRL_CHK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.0019 0.00207 ug/L 110 (50-150) MS1_202108180320 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0262 ug/L 111 (70-130)ND DUP_202108180321 13C2-PFDA (S)100 %100 (70-130) LCS3 13C2-PFDA (S)100 95.5 %96 (70-130) LCS4 13C2-PFDA (S)100 97.0 %97 (70-130) MBLK 13C2-PFDA (S)96.0 %96 (70-130) MRL_CHK 13C2-PFDA (S)100 97.3 %97 (70-130) MS1_202108180320 13C2-PFDA (S)100 98.2 %98 (70-130) DUP_202108180321 13C2-PFHxA (S)102 %102 (70-130) LCS3 13C2-PFHxA (S)100 102 %102 (70-130) LCS4 13C2-PFHxA (S)100 101 %101 (70-130) MBLK 13C2-PFHxA (S)99.6 %100 (70-130) MRL_CHK 13C2-PFHxA (S)100 101 %101 (70-130) MS1_202108180320 13C2-PFHxA (S)100 100 %100 (70-130) DUP_202108180321 13C2-PFOA– IS#1 (I)104 %104 (50-150) LCS3 13C2-PFOA– IS#1 (I)100 99.9 %100 (50-150) LCS4 13C2-PFOA– IS#1 (I)100 100 %100 (50-150) MBLK 13C2-PFOA– IS#1 (I)104 %104 (50-150) MRL_CHK 13C2-PFOA– IS#1 (I)100 104 %104 (50-150) MS1_202108180320 13C2-PFOA– IS#1 (I)100 103 %103 (50-150) DUP_202108180321 13C3-HFPO-DA (S)97.2 %97 (70-130) LCS3 13C3-HFPO-DA (S)100 100 %100 (70-130) LCS4 13C3-HFPO-DA (S)100 97.6 %98 (70-130) MBLK 13C3-HFPO-DA (S)98.1 %98 (70-130) MRL_CHK 13C3-HFPO-DA (S)100 96.5 %96 (70-130) MS1_202108180320 13C3-HFPO-DA (S)100 98.7 %99 (70-130) DUP_202108180321 13C4-PFOS– IS#2 (I)99.8 %100 (50-150) LCS3 13C4-PFOS– IS#2 (I)100 98.1 %98 (50-150) LCS4 13C4-PFOS– IS#2 (I)100 96.4 %96 (50-150) MBLK 13C4-PFOS– IS#2 (I)101 %101 (50-150) QC Report - Page 5 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 26 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: MRL_CHK 13C4-PFOS– IS#2 (I)100 103 %103 (50-150) MS1_202108180320 13C4-PFOS– IS#2 (I)100 102 %102 (50-150) DUP_202108180321 4,8-dioxa-3H-perfluorononanoic acid (ADONA)ND ug/L (0-30)ND LCS3 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.049 0.0479 ug/L 99 (70-130) LCS4 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.049 0.0499 ug/L 103 (70-130)4.130 MBLK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)<0.000667 ug/L MRL_CHK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00208 ug/L 110 (50-150) MS1_202108180320 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0262 ug/L 111 (70-130)ND DUP_202108180321 9-chlorohexadecafluoro-3-oxanone-sulfonic acid ND ug/L (0-30)ND LCS3 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.047 0.0449 ug/L 96 (70-130) LCS4 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.047 0.0465 ug/L 100 (70-130)3.530 MBLK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid <0.000667 ug/L MRL_CHK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00200 ug/L 107 (50-150) MS1_202108180320 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0251 ug/L 108 (70-130)ND DUP_202108180321 d3-NMeFOSAA (I)99.6 %100 (50-150) LCS3 d3-NMeFOSAA (I)100 95.5 %96 (50-150) LCS4 d3-NMeFOSAA (I)100 96.1 %96 (50-150) MBLK d3-NMeFOSAA (I)94.0 %94 (50-150) MRL_CHK d3-NMeFOSAA (I)100 97.2 %97 (50-150) MS1_202108180320 d3-NMeFOSAA (I)100 97.2 %97 (50-150) DUP_202108180321 d5-NEtFOSAA (S)98.6 %99 (70-130) LCS3 d5-NEtFOSAA (S)100 87.6 %88 (70-130) LCS4 d5-NEtFOSAA (S)100 88.8 %89 (70-130) MBLK d5-NEtFOSAA (S)92.8 %93 (70-130) MRL_CHK d5-NEtFOSAA (S)100 92.0 %92 (70-130) MS1_202108180320 d5-NEtFOSAA (S)100 97.3 %97 (70-130) DUP_202108180321 Hexafluoropropylene oxide dimer acid (HFPO-DA)ND ug/L (0-30)ND LCS3 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.05 0.0494 ug/L 99 (70-130) LCS4 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.05 0.0512 ug/L 102 (70-130)3.630 MBLK Hexafluoropropylene oxide dimer acid (HFPO-DA)<0.000667 ug/L MRL_CHK Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00222 ug/L 111 (50-150) MS1_202108180320 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0271 ug/L 108 (70-130)ND DUP_202108180321 N-ethyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS3 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0459 ug/L 92 (70-130) LCS4 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0484 ug/L 97 (70-130)5.330 MBLK N-ethyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00196 ug/L 98 (50-150) MS1_202108180320 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0274 ug/L 110 (70-130)ND QC Report - Page 6 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 27 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: DUP_202108180321 N-methyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS3 N-methyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0454 ug/L 91 (70-130) LCS4 N-methyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0488 ug/L 98 (70-130)7.230 MBLK N-methyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-methyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00200 ug/L 100 (50-150) MS1_202108180320 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0270 ug/L 108 (70-130)ND DUP_202108180321 Perfluorobutanesulfonic acid (PFBS)ND ug/L (0-30)ND LCS3 Perfluorobutanesulfonic acid (PFBS)0.044 0.0458 ug/L 104 (70-130) LCS4 Perfluorobutanesulfonic acid (PFBS)0.044 0.0447 ug/L 101 (70-130)2.430 MBLK Perfluorobutanesulfonic acid (PFBS)<0.000667 ug/L MRL_CHK Perfluorobutanesulfonic acid (PFBS)0.0018 0.00187 ug/L 106 (50-150) MS1_202108180320 Perfluorobutanesulfonic acid (PFBS)0.022 0.0241 ug/L 109 (70-130)ND DUP_202108180321 Perfluorodecanoic acid (PFDA)ND ug/L (0-30)ND LCS3 Perfluorodecanoic acid (PFDA)0.05 0.0496 ug/L 99 (70-130) LCS4 Perfluorodecanoic acid (PFDA)0.05 0.0502 ug/L 100 (70-130)1.230 MBLK Perfluorodecanoic acid (PFDA)<0.000667 ug/L MRL_CHK Perfluorodecanoic acid (PFDA)0.002 0.00212 ug/L 106 (50-150) MS1_202108180320 Perfluorodecanoic acid (PFDA)0.025 0.0272 ug/L 109 (70-130)ND DUP_202108180321 Perfluorododecanoic acid (PFDoA)ND ug/L (0-30)ND LCS3 Perfluorododecanoic acid (PFDoA)0.05 0.0479 ug/L 96 (70-130) LCS4 Perfluorododecanoic acid (PFDoA)0.05 0.0493 ug/L 99 (70-130)2.930 MBLK Perfluorododecanoic acid (PFDoA)<0.000667 ug/L MRL_CHK Perfluorododecanoic acid (PFDoA)0.002 0.00206 ug/L 103 (50-150) MS1_202108180320 Perfluorododecanoic acid (PFDoA)0.025 0.0267 ug/L 107 (70-130)ND DUP_202108180321 Perfluoroheptanoic acid (PFHpA)ND ug/L (0-30)ND LCS3 Perfluoroheptanoic acid (PFHpA)0.05 0.0505 ug/L 101 (70-130) LCS4 Perfluoroheptanoic acid (PFHpA)0.05 0.0522 ug/L 104 (70-130)3.330 MBLK Perfluoroheptanoic acid (PFHpA)<0.000667 ug/L MRL_CHK Perfluoroheptanoic acid (PFHpA)0.002 0.00226 ug/L 113 (50-150) MS1_202108180320 Perfluoroheptanoic acid (PFHpA)0.025 0.0285 ug/L 114 (70-130)ND DUP_202108180321 Perfluorohexanesulfonic acid (PFHxS)0.00745 ug/L (0-30)ND LCS3 Perfluorohexanesulfonic acid (PFHxS)0.046 0.0467 ug/L 102 (70-130) LCS4 Perfluorohexanesulfonic acid (PFHxS)0.046 0.0472 ug/L 104 (70-130)1.330 MBLK Perfluorohexanesulfonic acid (PFHxS)<0.000667 ug/L MRL_CHK Perfluorohexanesulfonic acid (PFHxS)0.0018 0.00199 ug/L 109 (50-150) MS1_202108180320 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0256 ug/L 112 (70-130)ND DUP_202108180321 Perfluorohexanoic acid (PFHxA)0.00283 ug/L (0-30)ND LCS3 Perfluorohexanoic acid (PFHxA)0.05 0.0512 ug/L 102 (70-130) QC Report - Page 7 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 28 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: LCS4 Perfluorohexanoic acid (PFHxA)0.05 0.0532 ug/L 106 (70-130)3.830 MBLK Perfluorohexanoic acid (PFHxA)<0.000667 ug/L MRL_CHK Perfluorohexanoic acid (PFHxA)0.002 0.00232 ug/L 116 (50-150) MS1_202108180320 Perfluorohexanoic acid (PFHxA)0.025 0.0279 ug/L 111 (70-130)ND DUP_202108180321 Perfluorononanoic acid (PFNA)ND ug/L (0-30)ND LCS3 Perfluorononanoic acid (PFNA)0.05 0.0497 ug/L 99 (70-130) LCS4 Perfluorononanoic acid (PFNA)0.05 0.0516 ug/L 103 (70-130)3.830 MBLK Perfluorononanoic acid (PFNA)<0.000667 ug/L MRL_CHK Perfluorononanoic acid (PFNA)0.002 0.00216 ug/L 108 (50-150) MS1_202108180320 Perfluorononanoic acid (PFNA)0.025 0.0280 ug/L 112 (70-130)ND DUP_202108180321 Perfluorooctanesulfonic acid (PFOS)0.0271 ug/L (0-30)ND LCS3 Perfluorooctanesulfonic acid (PFOS)0.046 0.0453 ug/L 98 (70-130) LCS4 Perfluorooctanesulfonic acid (PFOS)0.046 0.0475 ug/L 103 (70-130)4.730 MBLK Perfluorooctanesulfonic acid (PFOS)<0.000667 ug/L MRL_CHK Perfluorooctanesulfonic acid (PFOS)0.0019 0.00200 ug/L 108 (50-150) MS1_202108180320 Perfluorooctanesulfonic acid (PFOS)0.023 0.0253 ug/L 109 (70-130)ND DUP_202108180321 Perfluorooctanoic acid (PFOA)0.00787 ug/L (0-30)ND LCS3 Perfluorooctanoic acid (PFOA)0.05 0.0508 ug/L 102 (70-130) LCS4 Perfluorooctanoic acid (PFOA)0.05 0.0530 ug/L 106 (70-130)4.230 MBLK Perfluorooctanoic acid (PFOA)<0.000667 ug/L MRL_CHK Perfluorooctanoic acid (PFOA)0.002 0.00239 ug/L 120 (50-150) MS1_202108180320 Perfluorooctanoic acid (PFOA)0.025 0.0281 ug/L 112 (70-130)ND DUP_202108180321 Perfluorotetradecanoic acid (PFTA)ND ug/L (0-30)ND LCS3 Perfluorotetradecanoic acid (PFTA)0.05 0.0498 ug/L 100 (70-130) LCS4 Perfluorotetradecanoic acid (PFTA)0.05 0.0498 ug/L 100 (70-130)0.030 MBLK Perfluorotetradecanoic acid (PFTA)<0.000667 ug/L MRL_CHK Perfluorotetradecanoic acid (PFTA)0.002 0.00232 ug/L 116 (50-150) MS1_202108180320 Perfluorotetradecanoic acid (PFTA)0.025 0.0276 ug/L 110 (70-130)ND DUP_202108180321 Perfluorotridecanoic acid (PFTrDA)ND ug/L (0-30)ND LCS3 Perfluorotridecanoic acid (PFTrDA)0.05 0.0492 ug/L 99 (70-130) LCS4 Perfluorotridecanoic acid (PFTrDA)0.05 0.0505 ug/L 101 (70-130)2.630 MBLK Perfluorotridecanoic acid (PFTrDA)<0.000667 ug/L MRL_CHK Perfluorotridecanoic acid (PFTrDA)0.002 0.00207 ug/L 104 (50-150) MS1_202108180320 Perfluorotridecanoic acid (PFTrDA)0.025 0.0270 ug/L 108 (70-130)ND DUP_202108180321 Perfluoroundecanoic acid (PFUnA)ND ug/L (0-30)ND LCS3 Perfluoroundecanoic acid (PFUnA)0.05 0.0494 ug/L 99 (70-130) LCS4 Perfluoroundecanoic acid (PFUnA)0.05 0.0512 ug/L 102 (70-130)3.630 MBLK Perfluoroundecanoic acid (PFUnA)<0.000667 ug/L QC Report - Page 8 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 29 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: MRL_CHK Perfluoroundecanoic acid (PFUnA)0.002 0.00212 ug/L 106 (50-150) MS1_202108180320 Perfluoroundecanoic acid (PFUnA)0.025 0.0274 ug/L 110 (70-130)ND EPA Method 537.1 by EPA 537.1 Analysis Date: 08/26/2021Prep Batch: 1349764 Analytical Batch: 1350980 DUP_202108200208 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid ND ug/L (0-30)ND LCS1 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0240 ug/L 102 (70-130) LCS2 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0238 ug/L 101 (70-130)0.8430 MBLK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid <0.000667 ug/L MRL_CHK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.0019 0.00199 ug/L 106 (50-150) MS2_202108200577 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.047 0.0474 ug/L 101 (70-130)ND DUP_202108200208 13C2-PFDA (S)107 %107 (70-130) LCS1 13C2-PFDA (S)100 108 %108 (70-130) LCS2 13C2-PFDA (S)100 103 %103 (70-130) MBLK 13C2-PFDA (S)105 %105 (70-130) MRL_CHK 13C2-PFDA (S)100 105 %105 (70-130) MS2_202108200577 13C2-PFDA (S)100 106 %106 (70-130) DUP_202108200208 13C2-PFHxA (S)92.8 %93 (70-130) LCS1 13C2-PFHxA (S)100 104 %104 (70-130) LCS2 13C2-PFHxA (S)100 106 %107 (70-130) MBLK 13C2-PFHxA (S)106 %106 (70-130) MRL_CHK 13C2-PFHxA (S)100 104 %104 (70-130) MS2_202108200577 13C2-PFHxA (S)100 106 %106 (70-130) DUP_202108200208 13C2-PFOA– IS#1 (I)116 %116 (50-150) LCS1 13C2-PFOA– IS#1 (I)100 110 %110 (50-150) LCS2 13C2-PFOA– IS#1 (I)100 114 %114 (50-150) MBLK 13C2-PFOA– IS#1 (I)110 %110 (50-150) MRL_CHK 13C2-PFOA– IS#1 (I)100 111 %111 (50-150) MS2_202108200577 13C2-PFOA– IS#1 (I)100 113 %113 (50-150) DUP_202108200208 13C3-HFPO-DA (S)88.6 %89 (70-130) LCS1 13C3-HFPO-DA (S)100 101 %101 (70-130) LCS2 13C3-HFPO-DA (S)100 91.6 %92 (70-130) MBLK 13C3-HFPO-DA (S)94.8 %95 (70-130) MRL_CHK 13C3-HFPO-DA (S)100 92.3 %92 (70-130) MS2_202108200577 13C3-HFPO-DA (S)100 97.8 %98 (70-130) DUP_202108200208 13C4-PFOS– IS#2 (I)98.7 %99 (50-150) LCS1 13C4-PFOS– IS#2 (I)100 99.5 %100 (50-150) LCS2 13C4-PFOS– IS#2 (I)100 104 %105 (50-150) QC Report - Page 9 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 30 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: MBLK 13C4-PFOS– IS#2 (I)99.5 %100 (50-150) MRL_CHK 13C4-PFOS– IS#2 (I)100 100 %100 (50-150) MS2_202108200577 13C4-PFOS– IS#2 (I)100 98.6 %99 (50-150) DUP_202108200208 4,8-dioxa-3H-perfluorononanoic acid (ADONA)ND ug/L (0-30)ND LCS1 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0252 ug/L 107 (70-130) LCS2 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0254 ug/L 107 (70-130)0.7930 MBLK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)<0.000667 ug/L MRL_CHK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00219 ug/L 116 (50-150) MS2_202108200577 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.049 0.0446 ug/L 92 (70-130)ND DUP_202108200208 9-chlorohexadecafluoro-3-oxanone-sulfonic acid ND ug/L (0-30)ND LCS1 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0260 ug/L 112 (70-130) LCS2 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0250 ug/L 107 (70-130)3.930 MBLK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid <0.000667 ug/L MRL_CHK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00218 ug/L 117 (50-150) MS2_202108200577 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.047 0.0490 ug/L 105 (70-130)ND DUP_202108200208 d3-NMeFOSAA (I)118 %118 (50-150) LCS1 d3-NMeFOSAA (I)100 110 %110 (50-150) LCS2 d3-NMeFOSAA (I)100 117 %117 (50-150) MBLK d3-NMeFOSAA (I)107 %107 (50-150) MRL_CHK d3-NMeFOSAA (I)100 113 %113 (50-150) MS2_202108200577 d3-NMeFOSAA (I)100 114 %114 (50-150) DUP_202108200208 d5-NEtFOSAA (S)102 %102 (70-130) LCS1 d5-NEtFOSAA (S)100 101 %101 (70-130) LCS2 d5-NEtFOSAA (S)100 92.8 %93 (70-130) MBLK d5-NEtFOSAA (S)101 %101 (70-130) MRL_CHK d5-NEtFOSAA (S)100 92.4 %92 (70-130) MS2_202108200577 d5-NEtFOSAA (S)100 99.1 %99 (70-130) DUP_202108200208 Hexafluoropropylene oxide dimer acid (HFPO-DA)ND ug/L (0-30)ND LCS1 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0214 ug/L 86 (70-130) LCS2 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0242 ug/L 97 (70-130)1230 MBLK Hexafluoropropylene oxide dimer acid (HFPO-DA)<0.000667 ug/L MRL_CHK Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00196 ug/L 98 (50-150) MS2_202108200577 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.05 0.0459 ug/L 92 (70-130)ND DUP_202108200208 N-ethyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS1 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0264 ug/L 106 (70-130) LCS2 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0248 ug/L 99 (70-130)6.330 MBLK N-ethyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00225 ug/L 112 (50-150) QC Report - Page 10 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 31 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: MS2_202108200577 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0491 ug/L 98 (70-130)ND DUP_202108200208 N-methyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS1 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0253 ug/L 101 (70-130) LCS2 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0247 ug/L 99 (70-130)2.430 MBLK N-methyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-methyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00214 ug/L 107 (50-150) MS2_202108200577 N-methyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0507 ug/L 101 (70-130)ND DUP_202108200208 Perfluorobutanesulfonic acid (PFBS)ND ug/L (0-30)ND LCS1 Perfluorobutanesulfonic acid (PFBS)0.022 0.0239 ug/L 108 (70-130) LCS2 Perfluorobutanesulfonic acid (PFBS)0.022 0.0255 ug/L 115 (70-130)6.530 MBLK Perfluorobutanesulfonic acid (PFBS)<0.000667 ug/L MRL_CHK Perfluorobutanesulfonic acid (PFBS)0.0018 0.00234 ug/L 132 (50-150) MS2_202108200577 Perfluorobutanesulfonic acid (PFBS)0.044 0.0515 ug/L 116 (70-130)ND DUP_202108200208 Perfluorodecanoic acid (PFDA)ND ug/L (0-30)ND LCS1 Perfluorodecanoic acid (PFDA)0.025 0.0268 ug/L 107 (70-130) LCS2 Perfluorodecanoic acid (PFDA)0.025 0.0270 ug/L 108 (70-130)0.7430 MBLK Perfluorodecanoic acid (PFDA)<0.000667 ug/L MRL_CHK Perfluorodecanoic acid (PFDA)0.002 0.00228 ug/L 114 (50-150) MS2_202108200577 Perfluorodecanoic acid (PFDA)0.05 0.0510 ug/L 102 (70-130)ND DUP_202108200208 Perfluorododecanoic acid (PFDoA)ND ug/L (0-30)ND LCS1 Perfluorododecanoic acid (PFDoA)0.025 0.0258 ug/L 103 (70-130) LCS2 Perfluorododecanoic acid (PFDoA)0.025 0.0256 ug/L 103 (70-130)0.7830 MBLK Perfluorododecanoic acid (PFDoA)<0.000667 ug/L MRL_CHK Perfluorododecanoic acid (PFDoA)0.002 0.00211 ug/L 106 (50-150) MS2_202108200577 Perfluorododecanoic acid (PFDoA)0.05 0.0508 ug/L 102 (70-130)ND DUP_202108200208 Perfluoroheptanoic acid (PFHpA)ND ug/L (0-30)ND LCS1 Perfluoroheptanoic acid (PFHpA)0.025 0.0265 ug/L 106 (70-130) LCS2 Perfluoroheptanoic acid (PFHpA)0.025 0.0264 ug/L 106 (70-130)0.3830 MBLK Perfluoroheptanoic acid (PFHpA)<0.000667 ug/L MRL_CHK Perfluoroheptanoic acid (PFHpA)0.002 0.00218 ug/L 109 (50-150) MS2_202108200577 Perfluoroheptanoic acid (PFHpA)0.05 0.0482 ug/L 96 (70-130)ND DUP_202108200208 Perfluorohexanesulfonic acid (PFHxS)ND ug/L (0-30)ND LCS1 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0249 ug/L 109 (70-130) LCS2 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0261 ug/L 115 (70-130)4.730 MBLK Perfluorohexanesulfonic acid (PFHxS)<0.000667 ug/L MRL_CHK Perfluorohexanesulfonic acid (PFHxS)0.0018 0.00220 ug/L 121 (50-150) MS2_202108200577 Perfluorohexanesulfonic acid (PFHxS)0.046 0.0496 ug/L 109 (70-130)ND DUP_202108200208 Perfluorohexanoic acid (PFHxA)ND ug/L (0-30)ND QC Report - Page 11 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 32 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: LCS1 Perfluorohexanoic acid (PFHxA)0.025 0.0266 ug/L 106 (70-130) LCS2 Perfluorohexanoic acid (PFHxA)0.025 0.0274 ug/L 109 (70-130)3.030 MBLK Perfluorohexanoic acid (PFHxA)<0.000667 ug/L MRL_CHK Perfluorohexanoic acid (PFHxA)0.002 0.00216 ug/L 108 (50-150) MS2_202108200577 Perfluorohexanoic acid (PFHxA)0.05 0.0504 ug/L 101 (70-130)ND DUP_202108200208 Perfluorononanoic acid (PFNA)ND ug/L (0-30)ND LCS1 Perfluorononanoic acid (PFNA)0.025 0.0253 ug/L 101 (70-130) LCS2 Perfluorononanoic acid (PFNA)0.025 0.0275 ug/L 110 (70-130)8.330 MBLK Perfluorononanoic acid (PFNA)<0.000667 ug/L MRL_CHK Perfluorononanoic acid (PFNA)0.002 0.00234 ug/L 117 (50-150) MS2_202108200577 Perfluorononanoic acid (PFNA)0.05 0.0476 ug/L 95 (70-130)ND DUP_202108200208 Perfluorooctanesulfonic acid (PFOS)0.00267 ug/L (0-30)0.0025 LCS1 Perfluorooctanesulfonic acid (PFOS)0.023 0.0254 ug/L 110 (70-130) LCS2 Perfluorooctanesulfonic acid (PFOS)0.023 0.0240 ug/L 104 (70-130)5.730 MBLK Perfluorooctanesulfonic acid (PFOS)<0.000667 ug/L MRL_CHK Perfluorooctanesulfonic acid (PFOS)0.0019 0.00221 ug/L 119 (50-150) MS2_202108200577 Perfluorooctanesulfonic acid (PFOS)0.046 0.0504 ug/L 109 (70-130)ND DUP_202108200208 Perfluorooctanoic acid (PFOA)ND ug/L (0-30)ND LCS1 Perfluorooctanoic acid (PFOA)0.025 0.0287 ug/L 115 (70-130) LCS2 Perfluorooctanoic acid (PFOA)0.025 0.0273 ug/L 109 (70-130)5.030 MBLK Perfluorooctanoic acid (PFOA)<0.000667 ug/L MRL_CHK Perfluorooctanoic acid (PFOA)0.002 0.00253 ug/L 127 (50-150) MS2_202108200577 Perfluorooctanoic acid (PFOA)0.05 0.0515 ug/L 103 (70-130)ND DUP_202108200208 Perfluorotetradecanoic acid (PFTA)ND ug/L (0-30)ND LCS1 Perfluorotetradecanoic acid (PFTA)0.025 0.0268 ug/L 107 (70-130) LCS2 Perfluorotetradecanoic acid (PFTA)0.025 0.0271 ug/L 109 (70-130)1.130 MBLK Perfluorotetradecanoic acid (PFTA)<0.000667 ug/L MRL_CHK Perfluorotetradecanoic acid (PFTA)0.002 0.00240 ug/L 120 (50-150) MS2_202108200577 Perfluorotetradecanoic acid (PFTA)0.05 0.0480 ug/L 96 (70-130)ND DUP_202108200208 Perfluorotridecanoic acid (PFTrDA)ND ug/L (0-30)ND LCS1 Perfluorotridecanoic acid (PFTrDA)0.025 0.0244 ug/L 98 (70-130) LCS2 Perfluorotridecanoic acid (PFTrDA)0.025 0.0242 ug/L 97 (70-130)1.230 MBLK Perfluorotridecanoic acid (PFTrDA)<0.000667 ug/L MRL_CHK Perfluorotridecanoic acid (PFTrDA)0.002 0.00208 ug/L 104 (50-150) MS2_202108200577 Perfluorotridecanoic acid (PFTrDA)0.05 0.0451 ug/L 90 (70-130)ND DUP_202108200208 Perfluoroundecanoic acid (PFUnA)ND ug/L (0-30)ND LCS1 Perfluoroundecanoic acid (PFUnA)0.025 0.0246 ug/L 98 (70-130) LCS2 Perfluoroundecanoic acid (PFUnA)0.025 0.0246 ug/L 98 (70-130)0.030 QC Report - Page 12 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 33 of 34 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 952581 PFAS PFAS Report: Project: Group: MBLK Perfluoroundecanoic acid (PFUnA)<0.000667 ug/L MRL_CHK Perfluoroundecanoic acid (PFUnA)0.002 0.00215 ug/L 108 (50-150) MS2_202108200577 Perfluoroundecanoic acid (PFUnA)0.05 0.0443 ug/L 89 (70-130)ND QC Report - Page 13 of 13 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 34 of 34 pages Thank you for using BSK Associates for your analytical testing needs. In the following pages, you will find the test results for the samples submitted to our laboratory on 8/17/2021. The results have been approved for release by our Laboratory Director as indicated by the authorizing signature below. The samples were analyzed for the test(s) indicated on the Chain of Custody (see attached) and the results relate only to the samples analyzed. BSK certifies that the testing was performed in accordance with the quality system requirements specified in the 2016 TNI Standard. Any deviations from this standard or from the method requirements for each test procedure performed will be annotated alongside the analytical result or noted in the Case Narrative. Unless otherwise noted, the sample results are reported on an as received basis. This certificate of analysis shall not be reproduced except in full, without written approval of the laboratory. If additional clarification of any information is required, please contact your Project Manager, Christian Montiel , at 559-497-2888. Thank you again for using BSK Associates. We value your business and appreciate your loyalty. Sincerely, BESST, Inc. San Rafael, CA 94901 50 Tiburon Street, Suite 7 Dear Miles Koehler, Miles Koehler 8/31/2021 AEH2011 RE: Report for AEH2011 General Adam Trevarrow, Project Manager Accredited in Accordance with NELAP ORELAP #4021 BSK Associates Laboratory Fresno 1414 Stanislaus St Fresno, CA 93706 559-497-2888 (Main) 559-485-6935 (FAX) Invoice: AE19513 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 1 of 20 AEH2011 General Case Narrative Project and Report Details Client:BESST, Inc. Report To: Project #: Received:8/17/2021 - 13:15 Miles Koehler Invoice To: Invoice Attn: BESST, Inc. Leslie Emmens Project PO#:- Report Due:8/31/2021 Invoice Details SLO Prop 1 Sample Receipt Conditions Default CoolerCooler: Temperature on Receipt ”C: 1.5 Containers Intact COC/Labels Agree Received On Wet Ice Packing Material - Foam Packing Material - Other Sample(s) were received in temperature range. Initial receipt at BSK-FAL New CoolerCooler: Temperature on Receipt ”C: 4.3 Containers Intact COC/Labels Agree Received On Wet Ice Packing Material - Foam Packing Material - Other Sample(s) were received in temperature range. Initial receipt at BSK-FAL New Cooler [1]Cooler: Temperature on Receipt ”C: 4.7 Containers Intact COC/Labels Agree Received On Wet Ice Packing Material - Foam Packing Material - Other Sample(s) were received in temperature range. Initial receipt at BSK-FAL Data Qualifiers The following qualifiers have been applied to one or more analytical results: ***None applied*** Recipient(s) Report Format Report Distribution CC: Miles Koehler FINAL.RPT Noah Heller FINAL.RPT www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 2 of 20 Certificate of Analysis AEH2011 General SLO Prop 1 Sample Description: Pac Beach - 125 - 08132021 Sample ID: AEH2011-01 08/13/2021 - 09:30 Sampled By: Grab RPE Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/20/21 08/20/21AEH13035101 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LBenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LChlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LDichloromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LEthylbenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lo-Xylene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LStyrene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LToluene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %92 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %96 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 3 of 20 Certificate of Analysis AEH2011 General SLO Prop 1 Sample Description: Pac Beach - 115 - 08132021 Sample ID: AEH2011-02 08/13/2021 - 09:52 Sampled By: Grab RPE Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/20/21 08/20/21AEH13035301 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LBenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LChlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LDichloromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LEthylbenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lo-Xylene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LStyrene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LToluene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %95 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %98 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 4 of 20 Certificate of Analysis AEH2011 General SLO Prop 1 Sample Description: Pac Beach - 115 - 08132021-Dup Sample ID: AEH2011-03 08/13/2021 - 10:15 Sampled By: Grab RPE Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/20/21 08/20/21AEH13035301 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LBenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LChlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LDichloromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LEthylbenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lo-Xylene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LStyrene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LToluene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %93 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %96 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 5 of 20 Certificate of Analysis AEH2011 General SLO Prop 1 Sample Description: Pac Beach - 105 - 08132021 Sample ID: AEH2011-04 08/13/2021 - 10:40 Sampled By: Grab RPE Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/20/21 08/20/21AEH13035201 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LBenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LChlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LDichloromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LEthylbenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lo-Xylene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LStyrene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LToluene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %90 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %95 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 6 of 20 Certificate of Analysis AEH2011 General SLO Prop 1 Sample Description: Pac Beach - 95 - 08132021 Sample ID: AEH2011-05 08/13/2021 - 11:00 Sampled By: Grab RPE Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/20/21 08/20/21AEH13035401 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LBenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LChlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LDichloromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LEthylbenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lo-Xylene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LStyrene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LToluene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %91 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %95 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 7 of 20 Certificate of Analysis AEH2011 General SLO Prop 1 Sample Description: Pac Beach - 85 - 08132021 Sample ID: AEH2011-06 08/13/2021 - 11:20 Sampled By: Grab RPE Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/20/21 08/20/21AEH13035301 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LBenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LChlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LDichloromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LEthylbenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lo-Xylene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LStyrene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LToluene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %90 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %94 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 8 of 20 Certificate of Analysis AEH2011 General SLO Prop 1 Sample Description: Pac Beach - 75 - 08132021 Sample ID: AEH2011-07 08/13/2021 - 11:45 Sampled By: Grab RPE Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/20/21 08/20/21AEH13035301 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LBenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LChlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LDichloromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LEthylbenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lo-Xylene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LStyrene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LToluene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %93 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %96 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 9 of 20 Certificate of Analysis AEH2011 General SLO Prop 1 Sample Description: Pac Beach - 65 - 08132021 Sample ID: AEH2011-08 08/13/2021 - 12:08 Sampled By: Grab RPE Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/20/21 08/20/21AEH13035401 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LBenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LChlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LDichloromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LEthylbenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lo-Xylene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LStyrene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LToluene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %90 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %94 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 10 of 20 Certificate of Analysis AEH2011 General SLO Prop 1 Sample Description: Pac Beach - 55 - 08132021 Sample ID: AEH2011-09 08/13/2021 - 12:35 Sampled By: Grab RPE Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/20/21 08/20/21AEH13035501 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LBenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LChlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LDichloromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LEthylbenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lo-Xylene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LStyrene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LToluene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %91 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %96 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 11 of 20 Certificate of Analysis AEH2011 General SLO Prop 1 Sample Description: Pac Beach - 45 - 08132021 Sample ID: AEH2011-10 08/13/2021 - 12:55 Sampled By: Grab RPE Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/20/21 08/20/21AEH13035401 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LBenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LChlorobenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LDichloromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LEthylbenzene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Lo-Xylene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LStyrene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LToluene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/23/21 08/24/21AEH1442ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/23/21 08/24/21AEH1442ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/23/21 08/24/21AEH1442ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %92 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %95 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 12 of 20 AEH2011 General General Chemistry Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1303 Prepared: 8/20/2021 Analyst: DEHPrep Method: Method Specific Preparation SM 2540C - Quality Control Blank (AEH1303-BLK1) Total Dissolved Solids ND mg/L5.0 08/20/21 Blank Spike (AEH1303-BS1) 70-13099Total Dissolved Solids 1000990mg/L 08/20/21 Duplicate (AEH1303-DUP1), Source: AEH1863-01 101Total Dissolved Solids 300 mg/L5.0 300 08/20/21 Duplicate (AEH1303-DUP2), Source: AEH2011-06 102Total Dissolved Solids 540 mg/L5.0 530 08/20/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 13 of 20 AEH2011 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1442 Prepared: 8/23/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank (AEH1442-BLK1) 1,1,1-Trichloroethane ND ug/L0.50 08/23/21 1,1,2,2-Tetrachloroethane ND ug/L0.50 08/23/21 1,1,2-Trichloro-1,2,2-trifluoroethane ND ug/L10 08/23/21 1,1,2-Trichloroethane ND ug/L0.50 08/23/21 1,1-Dichloroethane ND ug/L0.50 08/23/21 1,1-Dichloroethene ND ug/L0.50 08/23/21 1,2,4-Trichlorobenzene ND ug/L0.50 08/23/21 1,2-Dichlorobenzene ND ug/L0.50 08/23/21 1,2-Dichloroethane ND ug/L0.50 08/23/21 1,2-Dichloropropane ND ug/L0.50 08/23/21 1,4-Dichlorobenzene ND ug/L0.50 08/23/21 Benzene ND ug/L0.50 08/23/21 Carbon Tetrachloride ND ug/L0.50 08/23/21 Chlorobenzene ND ug/L0.50 08/23/21 cis-1,2-Dichloroethene ND ug/L0.50 08/23/21 cis-1,3-Dichloropropene ND ug/L0.50 08/23/21 Dichloromethane ND ug/L0.50 08/23/21 Ethylbenzene ND ug/L0.50 08/23/21 m,p-Xylenes ND ug/L0.50 08/23/21 Methyl-t-butyl ether ND ug/L0.50 08/23/21 o-Xylene ND ug/L0.50 08/23/21 Styrene ND ug/L0.50 08/23/21 Tetrachloroethene (PCE) ND ug/L0.50 08/23/21 Toluene ND ug/L0.50 08/23/21 trans-1,2-Dichloroethene ND ug/L0.50 08/23/21 trans-1,3-Dichloropropene ND ug/L0.50 08/23/21 Trichloroethene (TCE) ND ug/L0.50 08/23/21 Trichlorofluoromethane ND ug/L5.0 08/23/21 Vinyl Chloride ND ug/L0.50 08/23/21 Total 1,3-Dichloropropene ND ug/L0.50 08/23/21 Total Xylenes ND ug/L0.50 08/23/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 8643 50 08/23/21 70-130Surrogate: Bromofluorobenzene 8945 50 08/23/21 Blank Spike (AEH1442-BS1) 70-130921,1,1-Trichloroethane 109.2 ug/L0.50 ND 08/23/21 70-130991,1,2,2-Tetrachloroethane 109.9 ug/L0.50 ND 08/23/21 70-130981,1,2-Trichloro-1,2,2-trifluoroethane 109.8 ug/L10 ND 08/23/21 70-1301031,1,2-Trichloroethane 1010ug/L0.50 ND 08/23/21 70-130981,1-Dichloroethane 109.8 ug/L0.50 ND 08/23/21 70-130941,1-Dichloroethene 109.4 ug/L0.50 ND 08/23/21 70-130921,2,4-Trichlorobenzene 109.2 ug/L0.50 ND 08/23/21 70-130921,2-Dichlorobenzene 109.2 ug/L0.50 ND 08/23/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 14 of 20 AEH2011 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1442 Prepared: 8/23/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank Spike (AEH1442-BS1) 70-1301031,2-Dichloroethane 1010ug/L0.50 ND 08/23/21 70-1301011,2-Dichloropropane 1010ug/L0.50 ND 08/23/21 70-130931,4-Dichlorobenzene 109.3 ug/L0.50 ND 08/23/21 70-13097Benzene109.7 ug/L0.50 ND 08/23/21 70-13091Carbon Tetrachloride 109.1 ug/L0.50 ND 08/23/21 70-13092Chlorobenzene109.2 ug/L0.50 ND 08/23/21 70-13099cis-1,2-Dichloroethene 109.9 ug/L0.50 ND 08/23/21 70-130100cis-1,3-Dichloropropene 1010ug/L0.50 ND 08/23/21 70-13099Dichloromethane109.9 ug/L0.50 ND 08/23/21 70-13089Ethylbenzene108.9 ug/L0.50 ND 08/23/21 70-13089m,p-Xylenes 2018ug/L0.50 ND 08/23/21 70-130101Methyl-t-butyl ether 2020ug/L0.50 ND 08/23/21 70-13091o-Xylene 109.1 ug/L0.50 ND 08/23/21 70-13092Styrene109.2 ug/L0.50 ND 08/23/21 70-13090Tetrachloroethene (PCE)109.0 ug/L0.50 ND 08/23/21 70-13092Toluene109.2 ug/L0.50 ND 08/23/21 70-13096trans-1,2-Dichloroethene 109.6 ug/L0.50 ND 08/23/21 70-13096trans-1,3-Dichloropropene 109.6 ug/L0.50 ND 08/23/21 70-13094Trichloroethene (TCE)109.4 ug/L0.50 ND 08/23/21 70-13092Trichlorofluoromethane109.2 ug/L5.0 ND 08/23/21 70-130101Vinyl Chloride 1010ug/L0.50 ND 08/23/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 9748 50 08/23/21 70-130Surrogate: Bromofluorobenzene 9949 50 08/23/21 Blank Spike Dup (AEH1442-BSD1) 3070-13092 01,1,1-Trichloroethane 109.2 ug/L0.50 ND 08/23/21 3070-130105 61,1,2,2-Tetrachloroethane 1011ug/L0.50 ND 08/23/21 3070-13099 1 1,1,2-Trichloro-1,2,2-trifluoroethane 109.9 ug/L10 ND 08/23/21 3070-130107 41,1,2-Trichloroethane 1011ug/L0.50 ND 08/23/21 3070-13099 11,1-Dichloroethane 109.9 ug/L0.50 ND 08/23/21 3070-13095 11,1-Dichloroethene 109.5 ug/L0.50 ND 08/23/21 3070-13095 21,2,4-Trichlorobenzene 109.5 ug/L0.50 ND 08/23/21 3070-13095 31,2-Dichlorobenzene 109.5 ug/L0.50 ND 08/23/21 3070-130107 41,2-Dichloroethane 1011ug/L0.50 ND 08/23/21 3070-130101 11,2-Dichloropropane 1010ug/L0.50 ND 08/23/21 3070-13094 11,4-Dichlorobenzene 109.4 ug/L0.50 ND 08/23/21 3070-13097 0Benzene109.7 ug/L0.50 ND 08/23/21 3070-13092 0Carbon Tetrachloride 109.2 ug/L0.50 ND 08/23/21 3070-13092 1Chlorobenzene109.2 ug/L0.50 ND 08/23/21 3070-130100 1cis-1,2-Dichloroethene 1010ug/L0.50 ND 08/23/21 3070-130100 0cis-1,3-Dichloropropene 1010ug/L0.50 ND 08/23/21 3070-13098 1Dichloromethane109.8 ug/L0.50 ND 08/23/21 3070-13089 0Ethylbenzene108.9 ug/L0.50 ND 08/23/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 15 of 20 AEH2011 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1442 Prepared: 8/23/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank Spike Dup (AEH1442-BSD1) 3070-13088 1m,p-Xylenes 2018ug/L0.50 ND 08/23/21 3070-130106 5Methyl-t-butyl ether 2021ug/L0.50 ND 08/23/21 3070-13090 1o-Xylene 109.0 ug/L0.50 ND 08/23/21 3070-13092 0Styrene109.2 ug/L0.50 ND 08/23/21 3070-13089 1Tetrachloroethene (PCE)108.9 ug/L0.50 ND 08/23/21 3070-13091 1Toluene109.1 ug/L0.50 ND 08/23/21 3070-13097 1trans-1,2-Dichloroethene 109.7 ug/L0.50 ND 08/23/21 3070-13099 3trans-1,3-Dichloropropene 109.9 ug/L0.50 ND 08/23/21 3070-13094 1Trichloroethene (TCE)109.4 ug/L0.50 ND 08/23/21 3070-13092 1Trichlorofluoromethane109.2 ug/L5.0 ND 08/23/21 3070-130102 1Vinyl Chloride 1010ug/L0.50 ND 08/23/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 10150 50 08/23/21 70-130Surrogate: Bromofluorobenzene 10151 50 08/23/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 16 of 20 AEH2011 General Certificate of Analysis Notes: • The Chain of Custody document and Sample Integrity Sheet are part of the analytical report. • Any remaining sample(s) for testing will be disposed of according to BSK’s sample retention policy unless other arrangements are made in advance. • All positive results for EPA Methods 504.1 and 524.2 require the analysis of a Field Reagent Blank (FRB) to confirm that the results are not a contamination error from field sampling steps. If Field Reagent Blanks were not submitted with the samples, this method requirement has not been performed. • Samples collected by BSK Analytical Laboratories were collected in accordance with the BSK Sampling and Collection Standard Operating Procedures. • J-value is equivalent to DNQ (Detected, not quantified) which is a trace value. A trace value is an analyte detected between the MDL and the laboratory reporting limit. This result is of an unknown data quality and is only qualitative (estimated). Baseline noise, calibration curve extrapolation below the lowest calibrator, method blank detections, and integration artifacts can all produce apparent DNQ values, which contribute to the un-reliability of these values. • (1) - Residual chlorine and pH analysis have a 15 minute holding time for both drinking and waste water samples as defined by the EPA and 40 CFR 136. Waste water and ground water (monitoring well) samples must be field filtered to meet the 15 minute holding time for dissolved metals. • Field tests are outside the scope of laboratory accreditation and there is no certification available for field testing. • Summations of analytes (i.e. Total Trihalomethanes) may appear to add individual amounts incorrectly, due to rounding of analyte values occurring before or after the total value is calculated, as well as rounding of the total value. • RL Multiplier is the factor used to adjust the reporting limit (RL) due to variations in sample preparation procedures and dilutions required for matrix interferences. • Due to the subjective nature of the Threshold Odor Method, all characterizations of the detected odor are the opinion of the panel of analysts. The characterizations can be found in Standard Methods 2170B Figure 2170:1. • The MCLs provided in this report (if applicable) represent the primary MCLs for that analyte. • (2) - Formerly known as Bis(2-Chloroisopropyl) ether. Definitions mg/L: Milligrams/Liter (ppm) mg/Kg: Milligrams/Kilogram (ppm) g/L: Micrograms/Liter (ppb) g/Kg: Micrograms/Kilogram (ppb) %: Percent NR: Non-Reportable MDL: Method Detection Limit RL: Reporting Limit: DL x Dilution ND: None Detected below MRL/MDL pCi/L: PicoCuries per Liter RL Mult: RL Multiplier MCL: Maximum Contaminant Limit MDA95: Min. Detected Activity MPN: Most Probable Number CFU: Colony Forming Unit Absent: Less than 1 CFU/100mLs Present: 1 or more CFU/100mLs U: The analyte was not detected at or above the reported sample quantitation limit. BSK is not accredited under the NELAP program for the following parameters:**NA** Please see the individual Subcontract Lab’s report for applicable certifications. www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 17 of 20 AEH2011 General Certificate of Analysis Certifications: Please refer to our website for a copy of our Accredited Fields of Testing under each certification. Fresno 1180State of California - ELAP 4021State of Hawaii 9254479Los Angeles CSD 4021-018NELAP certified CA000792022-1State of Nevada 4021-018State of Oregon - NELAP CA00079EPA - UCMR4 C997-21aState of Washington Sacramento 2435State of California - ELAP San Bernardino 2993State of California - ELAP 9254478Los Angeles CSD 4119-006NELAP certified 4119-006State of Oregon - NELAP Vancouver WA100008-014NELAP certified WA100008-014State of Oregon - NELAP C824-20aState of Washington www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2011 FINAL 08312021 1657 Page 18 of 20 Page 19 of 20 Page 20 of 20 Thank you for using BSK Associates for your analytical testing needs. In the following pages, you will find the test results for the samples submitted to our laboratory on 8/20/2021. The results have been approved for release by our Laboratory Director as indicated by the authorizing signature below. The samples were analyzed for the test(s) indicated on the Chain of Custody (see attached) and the results relate only to the samples analyzed. BSK certifies that the testing was performed in accordance with the quality system requirements specified in the 2016 TNI Standard. Any deviations from this standard or from the method requirements for each test procedure performed will be annotated alongside the analytical result or noted in the Case Narrative. Unless otherwise noted, the sample results are reported on an as received basis. This certificate of analysis shall not be reproduced except in full, without written approval of the laboratory. If additional clarification of any information is required, please contact your Project Manager, Christian Montiel , at 559-497-2888. Thank you again for using BSK Associates. We value your business and appreciate your loyalty. Sincerely, BESST, Inc. San Rafael, CA 94901 50 Tiburon Street, Suite 7 Dear Miles Koehler, Miles Koehler 9/07/2021 AEH2464 RE: Report for AEH2464 General Adam Trevarrow, Project Manager Accredited in Accordance with NELAP ORELAP #4021 BSK Associates Laboratory Fresno 1414 Stanislaus St Fresno, CA 93706 559-497-2888 (Main) 559-485-6935 (FAX) Invoice: AE19982 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 1 of 14 AEH2464 General Case Narrative Project and Report Details Client:BESST, Inc. Report To: Project #: Received:8/20/2021 - 12:54 Miles Koehler Invoice To: Invoice Attn: BESST, Inc. Leslie Emmens Project PO#:- Report Due:9/03/2021 Invoice Details SLO Prop 1 Sample Receipt Conditions Default CoolerCooler: Temperature on Receipt ”C: 1.1 Containers Intact COC/Labels Agree Received On Wet Ice Packing Material - Other Sample(s) were received in temperature range. Initial receipt at BSK-FAL Data Qualifiers The following qualifiers have been applied to one or more analytical results: ***None applied*** Recipient(s) Report Format Report Distribution CC: Miles Koehler FINAL.RPT Noah Heller FINAL.RPT Robert Emmens FINAL.RPT www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 2 of 14 Certificate of Analysis AEH2464 General SLO Prop 1 Sample Description: SLR-50 Sample ID: AEH2464-01 08/19/2021 - 16:30 Sampled By: Grab RF Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/25/21 08/25/21AEH15436601 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LBenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LChlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LDichloromethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LEthylbenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lo-Xylene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LStyrene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/29/21 08/29/21AEH17994.1 1 0.50 ug/LToluene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/29/21 08/29/21AEH1799ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/29/21 08/29/21AEH1799ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %94 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %96 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 3 of 14 Certificate of Analysis AEH2464 General SLO Prop 1 Sample Description: SLR-45 Sample ID: AEH2464-02 08/19/2021 - 16:50 Sampled By: Grab RF Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/25/21 08/25/21AEH15436601 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LBenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LChlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LDichloromethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LEthylbenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lo-Xylene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LStyrene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/29/21 08/29/21AEH17994.3 1 0.50 ug/LToluene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/29/21 08/29/21AEH1799ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/29/21 08/29/21AEH1799ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %97 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %98 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 4 of 14 Certificate of Analysis AEH2464 General SLO Prop 1 Sample Description: SLR-46 Sample ID: AEH2464-03 08/19/2021 - 17:00 Sampled By: Grab RF Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/25/21 08/25/21AEH15436501 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LBenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LChlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LDichloromethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LEthylbenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lo-Xylene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LStyrene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/29/21 08/29/21AEH17994.3 1 0.50 ug/LToluene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/29/21 08/29/21AEH1799ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/29/21 08/29/21AEH1799ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %96 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %98 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 5 of 14 Certificate of Analysis AEH2464 General SLO Prop 1 Sample Description: SLR-35 Sample ID: AEH2464-04 08/19/2021 - 17:20 Sampled By: Grab RF Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/25/21 08/25/21AEH15436701 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LBenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LChlorobenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LDichloromethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LEthylbenzene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Lo-Xylene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LStyrene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/29/21 08/29/21AEH17993.8 1 0.50 ug/LToluene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/29/21 08/29/21AEH1799ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/29/21 08/29/21AEH1799ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/29/21 08/29/21AEH1799ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %96 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %101 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 6 of 14 AEH2464 General General Chemistry Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1543 Prepared: 8/25/2021 Analyst: DEHPrep Method: Method Specific Preparation SM 2540C - Quality Control Blank (AEH1543-BLK1) Total Dissolved Solids ND mg/L5.0 08/25/21 Blank Spike (AEH1543-BS1) 70-13099Total Dissolved Solids 1000990mg/L 08/25/21 Duplicate (AEH1543-DUP1), Source: AEH2399-01 101Total Dissolved Solids 960 mg/L5.0 950 08/25/21 Duplicate (AEH1543-DUP2), Source: AEH2397-05 101Total Dissolved Solids 4500 mg/L5.0 4500 08/25/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 7 of 14 AEH2464 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1799 Prepared: 8/29/2021 Analyst: JNGPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank (AEH1799-BLK1) 1,1,1-Trichloroethane ND ug/L0.50 08/29/21 1,1,2,2-Tetrachloroethane ND ug/L0.50 08/29/21 1,1,2-Trichloro-1,2,2-trifluoroethane ND ug/L10 08/29/21 1,1,2-Trichloroethane ND ug/L0.50 08/29/21 1,1-Dichloroethane ND ug/L0.50 08/29/21 1,1-Dichloroethene ND ug/L0.50 08/29/21 1,2,4-Trichlorobenzene ND ug/L0.50 08/29/21 1,2-Dichlorobenzene ND ug/L0.50 08/29/21 1,2-Dichloroethane ND ug/L0.50 08/29/21 1,2-Dichloropropane ND ug/L0.50 08/29/21 1,4-Dichlorobenzene ND ug/L0.50 08/29/21 Benzene ND ug/L0.50 08/29/21 Carbon Tetrachloride ND ug/L0.50 08/29/21 Chlorobenzene ND ug/L0.50 08/29/21 cis-1,2-Dichloroethene ND ug/L0.50 08/29/21 cis-1,3-Dichloropropene ND ug/L0.50 08/29/21 Dichloromethane ND ug/L0.50 08/29/21 Ethylbenzene ND ug/L0.50 08/29/21 m,p-Xylenes ND ug/L0.50 08/29/21 Methyl-t-butyl ether ND ug/L0.50 08/29/21 o-Xylene ND ug/L0.50 08/29/21 Styrene ND ug/L0.50 08/29/21 Tetrachloroethene (PCE) ND ug/L0.50 08/29/21 Toluene ND ug/L0.50 08/29/21 trans-1,2-Dichloroethene ND ug/L0.50 08/29/21 trans-1,3-Dichloropropene ND ug/L0.50 08/29/21 Trichloroethene (TCE) ND ug/L0.50 08/29/21 Trichlorofluoromethane ND ug/L5.0 08/29/21 Vinyl Chloride ND ug/L0.50 08/29/21 Total 1,3-Dichloropropene ND ug/L0.50 08/29/21 Total Xylenes ND ug/L0.50 08/29/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 9447 50 08/29/21 70-130Surrogate: Bromofluorobenzene 9748 50 08/29/21 Blank Spike (AEH1799-BS1) 70-1301181,1,1-Trichloroethane 1012ug/L0.50 ND 08/29/21 70-1301151,1,2,2-Tetrachloroethane 1012ug/L0.50 ND 08/29/21 70-1301221,1,2-Trichloro-1,2,2-trifluoroethane 1012ug/L10 ND 08/29/21 70-1301161,1,2-Trichloroethane 1012ug/L0.50 ND 08/29/21 70-1301181,1-Dichloroethane 1012ug/L0.50 ND 08/29/21 70-1301191,1-Dichloroethene 1012ug/L0.50 ND 08/29/21 70-1301131,2,4-Trichlorobenzene 1011ug/L0.50 ND 08/29/21 70-1301131,2-Dichlorobenzene 1011ug/L0.50 ND 08/29/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 8 of 14 AEH2464 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1799 Prepared: 8/29/2021 Analyst: JNGPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank Spike (AEH1799-BS1) 70-1301181,2-Dichloroethane 1012ug/L0.50 ND 08/29/21 70-1301181,2-Dichloropropane 1012ug/L0.50 ND 08/29/21 70-1301131,4-Dichlorobenzene 1011ug/L0.50 ND 08/29/21 70-130116Benzene1012ug/L0.50 ND 08/29/21 70-130118Carbon Tetrachloride 1012ug/L0.50 ND 08/29/21 70-130115Chlorobenzene1011ug/L0.50 ND 08/29/21 70-130115cis-1,2-Dichloroethene 1011ug/L0.50 ND 08/29/21 70-130115cis-1,3-Dichloropropene 1011ug/L0.50 ND 08/29/21 70-130102Dichloromethane1010ug/L0.50 ND 08/29/21 70-130112Ethylbenzene1011ug/L0.50 ND 08/29/21 70-130114m,p-Xylenes 2023ug/L0.50 ND 08/29/21 70-130119Methyl-t-butyl ether 2024ug/L0.50 ND 08/29/21 70-130114o-Xylene 1011ug/L0.50 ND 08/29/21 70-130112Styrene1011ug/L0.50 ND 08/29/21 70-130114Tetrachloroethene (PCE)1011ug/L0.50 ND 08/29/21 70-130115Toluene1011ug/L0.50 ND 08/29/21 70-130121trans-1,2-Dichloroethene 1012ug/L0.50 ND 08/29/21 70-130117trans-1,3-Dichloropropene 1012ug/L0.50 ND 08/29/21 70-130115Trichloroethene (TCE)1011ug/L0.50 ND 08/29/21 70-130114Trichlorofluoromethane1011ug/L5.0 ND 08/29/21 70-130114Vinyl Chloride 1011ug/L0.50 ND 08/29/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 10150 50 08/29/21 70-130Surrogate: Bromofluorobenzene 10352 50 08/29/21 Blank Spike Dup (AEH1799-BSD1) 3070-130116 21,1,1-Trichloroethane 1012ug/L0.50 ND 08/29/21 3070-130114 21,1,2,2-Tetrachloroethane 1011ug/L0.50 ND 08/29/21 3070-130119 2 1,1,2-Trichloro-1,2,2-trifluoroethane 1012ug/L10 ND 08/29/21 3070-130114 11,1,2-Trichloroethane 1011ug/L0.50 ND 08/29/21 3070-130116 21,1-Dichloroethane 1012ug/L0.50 ND 08/29/21 3070-130117 21,1-Dichloroethene 1012ug/L0.50 ND 08/29/21 3070-130110 21,2,4-Trichlorobenzene 1011ug/L0.50 ND 08/29/21 3070-130110 31,2-Dichlorobenzene 1011ug/L0.50 ND 08/29/21 3070-130116 21,2-Dichloroethane 1012ug/L0.50 ND 08/29/21 3070-130115 21,2-Dichloropropane 1012ug/L0.50 ND 08/29/21 3070-130110 31,4-Dichlorobenzene 1011ug/L0.50 ND 08/29/21 3070-130114 2Benzene1011ug/L0.50 ND 08/29/21 3070-130115 2Carbon Tetrachloride 1012ug/L0.50 ND 08/29/21 3070-130114 1Chlorobenzene1011ug/L0.50 ND 08/29/21 3070-130113 2cis-1,2-Dichloroethene 1011ug/L0.50 ND 08/29/21 3070-130112 2cis-1,3-Dichloropropene 1011ug/L0.50 ND 08/29/21 3070-130103 1Dichloromethane1010ug/L0.50 ND 08/29/21 3070-130110 2Ethylbenzene1011ug/L0.50 ND 08/29/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 9 of 14 AEH2464 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1799 Prepared: 8/29/2021 Analyst: JNGPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank Spike Dup (AEH1799-BSD1) 3070-130110 4m,p-Xylenes 2022ug/L0.50 ND 08/29/21 3070-130117 2Methyl-t-butyl ether 2023ug/L0.50 ND 08/29/21 3070-130110 3o-Xylene 1011ug/L0.50 ND 08/29/21 3070-130108 4Styrene1011ug/L0.50 ND 08/29/21 3070-130111 2Tetrachloroethene (PCE)1011ug/L0.50 ND 08/29/21 3070-130113 1Toluene1011ug/L0.50 ND 08/29/21 3070-130118 2trans-1,2-Dichloroethene 1012ug/L0.50 ND 08/29/21 3070-130115 2trans-1,3-Dichloropropene 1011ug/L0.50 ND 08/29/21 3070-130113 2Trichloroethene (TCE)1011ug/L0.50 ND 08/29/21 3070-130113 1Trichlorofluoromethane1011ug/L5.0 ND 08/29/21 3070-130112 2Vinyl Chloride 1011ug/L0.50 ND 08/29/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 10050 50 08/29/21 70-130Surrogate: Bromofluorobenzene 10351 50 08/29/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 10 of 14 AEH2464 General Certificate of Analysis Notes: • The Chain of Custody document and Sample Integrity Sheet are part of the analytical report. • Any remaining sample(s) for testing will be disposed of according to BSK’s sample retention policy unless other arrangements are made in advance. • All positive results for EPA Methods 504.1 and 524.2 require the analysis of a Field Reagent Blank (FRB) to confirm that the results are not a contamination error from field sampling steps. If Field Reagent Blanks were not submitted with the samples, this method requirement has not been performed. • Samples collected by BSK Analytical Laboratories were collected in accordance with the BSK Sampling and Collection Standard Operating Procedures. • J-value is equivalent to DNQ (Detected, not quantified) which is a trace value. A trace value is an analyte detected between the MDL and the laboratory reporting limit. This result is of an unknown data quality and is only qualitative (estimated). Baseline noise, calibration curve extrapolation below the lowest calibrator, method blank detections, and integration artifacts can all produce apparent DNQ values, which contribute to the un-reliability of these values. • (1) - Residual chlorine and pH analysis have a 15 minute holding time for both drinking and waste water samples as defined by the EPA and 40 CFR 136. Waste water and ground water (monitoring well) samples must be field filtered to meet the 15 minute holding time for dissolved metals. • Field tests are outside the scope of laboratory accreditation and there is no certification available for field testing. • Summations of analytes (i.e. Total Trihalomethanes) may appear to add individual amounts incorrectly, due to rounding of analyte values occurring before or after the total value is calculated, as well as rounding of the total value. • RL Multiplier is the factor used to adjust the reporting limit (RL) due to variations in sample preparation procedures and dilutions required for matrix interferences. • Due to the subjective nature of the Threshold Odor Method, all characterizations of the detected odor are the opinion of the panel of analysts. The characterizations can be found in Standard Methods 2170B Figure 2170:1. • The MCLs provided in this report (if applicable) represent the primary MCLs for that analyte. • (2) - Formerly known as Bis(2-Chloroisopropyl) ether. Definitions mg/L: Milligrams/Liter (ppm) mg/Kg: Milligrams/Kilogram (ppm) g/L: Micrograms/Liter (ppb) g/Kg: Micrograms/Kilogram (ppb) %: Percent NR: Non-Reportable MDL: Method Detection Limit RL: Reporting Limit: DL x Dilution ND: None Detected below MRL/MDL pCi/L: PicoCuries per Liter RL Mult: RL Multiplier MCL: Maximum Contaminant Limit MDA95: Min. Detected Activity MPN: Most Probable Number CFU: Colony Forming Unit Absent: Less than 1 CFU/100mLs Present: 1 or more CFU/100mLs U: The analyte was not detected at or above the reported sample quantitation limit. BSK is not accredited under the NELAP program for the following parameters:**NA** Please see the individual Subcontract Lab’s report for applicable certifications. www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 11 of 14 AEH2464 General Certificate of Analysis Certifications: Please refer to our website for a copy of our Accredited Fields of Testing under each certification. Fresno 1180State of California - ELAP 4021State of Hawaii 9254479Los Angeles CSD 4021-018NELAP certified CA000792022-1State of Nevada 4021-018State of Oregon - NELAP CA00079EPA - UCMR4 C997-21aState of Washington Sacramento 2435State of California - ELAP San Bernardino 2993State of California - ELAP 9254478Los Angeles CSD 4119-006NELAP certified 4119-006State of Oregon - NELAP Vancouver WA100008-014NELAP certified WA100008-014State of Oregon - NELAP C824-20aState of Washington www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH2464 FINAL 09072021 1346 Page 12 of 14 Page 13 of 14 Page 14 of 14 Laboratory Report for BESST Inc. 50 Tiburon Street Suite 7 San Rafael, CA 94901 Attention: Miles Koehler Project Manager Date of Issue 09/06/2021 EUROFINS EATON ANALYTICAL, LLC L6NW: Rachelle Arada 954075 PFAS PFAS Report: Project: Group: 750 Royal Oaks Drive, Suite 100 Monrovia, California 91016-3629 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) * Accredited in accordance with TNI 2016 and ISO/IEC 17025:2017. * Laboratory certifies that the test results meet all TNI 2016 and ISO/IEC 17025:2017 requirements unless noted under the individual analysis. * Following the cover page are State Certification List, ISO 17025 Accredited Method List, Acknowledgement of Samples Received, Comments, Hits Report, Data Report, QC Summary, QC Report and Regulatory Forms, as applicable. * Test results relate only to the sample(s) tested. * Test results apply to the sample(s) as received, unless otherwise noted in the comments report (ISO/IEC 17025:2017). * This report shall not be reproduced except in full, without the written approval of the laboratory. * This report includes ISO/IEC 17025 and non-ISO 17025 accredited methods. Page 1 of 32 pages STATE CERTIFICATION LIST * NELAP/TNI Recognized Accreditation Bodies State Certification Number State Certification Number Alabama 41060 Montana Cert 0035 Arizona AZ0778 Nebraska Certified Arkansas Certified Nevada CA000062018 California 2813 New Hampshire * 2959 Colorado Certified New Jersey * CA 008 Connecticut PH-0107 New Mexico Certified Delaware CA 006 New York * 11320 Florida * E871024 North Carolina 06701 Georgia 947 North Dakota R-009 Guam 18-005R Oregon * CA200003-005 Hawaii Certified Pennsylvania * 68-565 Idaho Certified Puerto Rico Certified Illinois * 200033 Rhode Island LAO00326 Indiana C-CA-01 South Carolina 87016 Iowa - Asbestos 413 South Dakota Certified Kansas * E-10268 Tennessee TN02839 Kentucky 90107 Texas * T104704230-18-15 Louisiana * LA180000 Utah (Primary AB) * CA00006 Maine CA0006 Vermont VT0114 Maryland 224 Virginia * 460260 Commonwealth of Northern Marianas Is. MP0004 Washington C838 Massachusetts M-CA006 EPA Region 5 Certified Michigan 9906 Los Angeles County Sanitation Districts 10264 Mississippi Certified Page 2 of 32 pages ISO/IEC 17025 Accredited Method List SPECIFIC TESTS METHOD OR TECHNIQUE USED Environ- mental (Drinking Water) Environ- mental (Waste Water) Water as a Component of Food and Bev/Bev/ Bottled Water SPECIFIC TESTS METHOD OR TECHNIQUE USED Environ- mental (Drinking Water) Environ- mental (Waste Water) Water as a Component of Food and Bev/Bev/ Bottled Water 1,2,3-TCP (5 PPT & 0.5 PPT)CA SRL 524M-TCP x x Hexavalent Chromium EPA 218.7 x x 1,4-Dioxane EPA 522 x x Hexavalent Chromium SM 3500-Cr B x 2,3,7,8-TCDD Modified EPA 1613B x x Hormones EPA 539 x x Acrylamide In House Method (2440)x x Hydroxide as OH Calc.SM 2330B x x Algal Toxins/Microcystin In House Method (3570)Kjeldahl Nitrogen EPA 351.2 x Alkalinity SM 2320B x x x Legionella Legiolert x x Ammonia EPA 350.1 x x Mercury EPA 200.8 x x Ammonia SM 4500-NH3 H x x Metals EPA 200.7 / 200.8 x x x Anions and DBPs by IC EPA 300.0 x x x Microcystin LR ELISA (2360)x x Anions and DBPs by IC EPA 300.1 x x Microcystin, Total EPA 546 x x Asbestos EPA 100.2 x x NDMA EEA/Agilent 521.1 In house method (2425)x x BOD / CBOD SM 5210B x x Nitrate/Nitrite Nitrogen EPA 353.2 x x x Bromate In House Method (2447)x x OCL, Pesticides/PCB EPA 505 x x Carbamates EPA 531.2 x x Ortho Phosphate EPA 365.1 x x x Carbonate as CO3 SM 2330B x x x Ortho Phosphorous SM 4500P E x x Carbonyls EPA 556 x x Oxyhalides Disinfection Byproducts EPA 317.0 x x COD EPA 410.4 / SM 5220D x Perchlorate EPA 331.0 x x Chloramines SM 4500-CL G x x x Perchlorate (low and high)EPA 314.0 x x Chlorinated Acids EPA 515.4 x x Perfluorinated Alkyl Acids EPA 537 x x Chlorinated Acids EPA 555 x x Perfluorinated Polutant In house Method (2434)x x Chlorine Dioxide SM 4500-CLO2 D Palin Test x x pH EPA 150.1 x Chlorine -Total/Free/ Combined Residual SM 4500-Cl G x x x pH SM 4500-H+B x x x Conductivity EPA 120.1 x Phenylurea Pesticides/ Herbicides In House Method, based on EPA 532 (2448)x x Conductivity SM 2510B x x x Pseudomonas IDEXX Pseudalert (2461)x x Corrosivity (Langelier Index)SM 2330B x x Radium-226 GA Institute of Tech x x Cyanide, Amenable SM 4500-CN G x x Radium-228 GA Institute of Tech x x Cyanide, Free SM 4500CN F x x x Radon-222 SM 7500RN x x Cyanide, Total EPA 335.4 x x x Residue, Filterable SM 2540C x x x Cyanogen Chloride (screen)In House Method (2470)x x Residue, Non-filterable SM 2540D x Diquat and Paraquat EPA 549.2 x x Residue, Total SM 2540B x x DBP/HAA SM 6251B x x Residue, Volatile EPA 160.4 x Dissolved Oxygen SM 4500-O G x x Semi-VOC EPA 525.2 x x DOC SM 5310C x x Silica SM 4500-Si D x x E. Coli (MTF/EC+MUG)x x Silica SM 4500-SiO2 C x x E. Coli CFR 141.21(f)(6)(i)x x Sulfide SM 4500-S= D x E. Coli SM 9223 x Sulfite SM 4500-SO3B x x x E. Coli (Enumeration)SM 9221B.1/ SM 9221F x x Surfactants SM 5540C x x x E. Coli (Enumeration)SM 9223B x x Taste and Odor Analytes SM 6040E x x EDB/DCBP EPA 504.1 x Total Coliform (P/A)SM 9221 A, B x x EDB/DBCP and DBP EPA 551.1 x x Total Coliform (Enumeration)SM 9221 A, B, C x x EDTA and NTA In House Method (2454)x x Total Coliform / E. coli Colisure SM 9223 x x Endothall EPA 548.1 x x Total Coliform SM 9221B x Endothall In-house Method (2445)x x Total Coliform with Chlorine Present SM 9221B x Enterococci SM 9230B x x Total Coliform / E.coli (P/A and Enumeration)SM 9223 x x Fecal Coliform SM 9221 E (MTF/EC)x TOC SM 5310C x x x Fecal Coliform SM 9221C, E (MTF/EC)x TOX SM 5320B x Fecal Coliform (Enumeration)SM 9221E (MTF/EC)x x Total Phenols EPA 420.1 x Fecal Coliform with Chlorine Present SM 9221E x Total Phenols EPA 420.4 x x x Fecal Streptococci SM 9230B x x Total Phosphorous SM 4500 P E x Fluoride SM 4500-F C x x x Triazine Pesticides & Degradates In House (3617)x x Glyphosate EPA 547 x x Turbidity EPA 180.1 x x x Glyphosate + AMPA In House Method (3618)x x Turbidity SM 2130B x x Gross Alpha/Beta EPA 900.0 x x x Uranium by ICP/MS EPA 200.8 x x Gross Alpha Coprecipitation SM 7110 C x x x UV 254 SM 5910B x Hardness SM 2340B x x x VOC EPA 524.2 x x Heterotrophic Bacteria In House Method (2439)x x VOC In House Method (2411)x x Heterotrophic Bacteria SM 9215 B x x Yeast and Mold SM 9610 x x Hexavalent Chromium EPA 218.6 x x x Field Sampling N/A The tests listed below are accredited and meet the requirements of ISO/IEC 17025 as verified by the ANSI-ASQ National Accreditation Board/A2LA. Refer to Certificate and scope of accreditation (5890) found at: https://www.eurofinsus.com/Eaton 750 Royal Oaks Dr., Ste 100, Monrovia, CA 91016 Tel (626) 386-1100 Fax (866) 988-3757 https://www.eurofinsus.com/Eaton Version 006 Issued: 05/04/20 Page 3 of 32 pages Acknowledgement of Samples Received BESSTINC-CA 954075 PFAS PFAS Client ID: Folder #: Project: Sample Group: Addr:BESST Inc. 50 Tiburon Street Suite 7 San Rafael, CA 94901 Project Manager: Phone: PO #: Rachelle Arada 626-386-1106 SLOPROD1 Attn: Phone: Miles Koehler 415-453-2501 The following samples were received from you on August 21, 2021 at 1028. They have been scheduled for the tests listed below each sample. If this information is incorrect, please contact your service representative. Thank you for using Eurofins Eaton Analytical, LLC. Sample #Sample ID Sample Date 202108210014 08/19/2021 1630SLR-50 @537.1 202108210016 08/19/2021 1650SLR-45 @537.1 202108210017 08/19/2021 1720SLR-35 @537.1 202108210018 08/19/2021 1535SLR-EB @537.1 202108210019 08/19/2021 1538Field Blank - HOLD @537.1 FB 202108210020 08/19/2021 1700SLR-46 @537.1 @537.1 -- EPA Method 537.1 @537.1 FB -- EPA Method 537.1 Test Description Reported: 09/06/2021 Page 1 of 1 750 Royal Oaks Drive, Suite 100, Monrovia, CA 91016 Tel (626) 386-1100 Fax (866) 988-3757 www.EurofinsUS.com/Eaton Page 4 of 32 pages Page 5 of 32 pages Page 6 of 32 pages Laboratory Comments BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: Flags Legend: E6 - Concentration estimated. Internal standard recoveries did not meet method acceptance criteria. M1 - Matrix spike recovery was high; the associated blank spike recovery was acceptable. Comments - Page 1 of 1The Comments Report may be blank if there are no comments for this report. Page 7 of 32 pages Laboratory Hits Samples Received on: 08/21/2021 1028 BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: Analyzed Analyte Result Units MRLFederal MCLSample ID 202108210014 SLR-50 08/26/2021 21:17 Perfluorobutanesulfonic acid (PFBS)ug/L0.015 0.0020 08/26/2021 21:17 Perfluoroheptanoic acid (PFHpA)ug/L0.0066 0.0020 08/26/2021 21:17 Perfluorohexanesulfonic acid (PFHxS)ug/L0.040 0.0020 08/26/2021 21:17 Perfluorohexanoic acid (PFHxA)ug/L0.0094 0.0020 08/26/2021 21:17 Perfluorononanoic acid (PFNA)ug/L0.0025 0.0020 08/26/2021 21:17 Perfluorooctanesulfonic acid (PFOS)ug/L0.034 0.0020 08/26/2021 21:17 Perfluorooctanoic acid (PFOA)ug/L0.0068 0.0020 202108210016 SLR-45 08/26/2021 21:36 Perfluorobutanesulfonic acid (PFBS)ug/L0.014 0.0020 08/26/2021 21:36 Perfluoroheptanoic acid (PFHpA)ug/L0.0062 0.0020 08/26/2021 21:36 Perfluorohexanesulfonic acid (PFHxS)ug/L0.039 0.0020 08/26/2021 21:36 Perfluorohexanoic acid (PFHxA)ug/L0.0097 0.0020 08/26/2021 21:36 Perfluorononanoic acid (PFNA)ug/L0.0024 0.0020 08/26/2021 21:36 Perfluorooctanesulfonic acid (PFOS)ug/L0.034 0.0020 08/26/2021 21:36 Perfluorooctanoic acid (PFOA)ug/L0.0072 0.0020 202108210017 SLR-35 08/26/2021 23:50 Perfluorobutanesulfonic acid (PFBS)ug/L0.015 0.0020 08/26/2021 23:50 Perfluoroheptanoic acid (PFHpA)ug/L0.0064 0.0020 08/26/2021 23:50 Perfluorohexanesulfonic acid (PFHxS)ug/L0.038 0.0020 08/26/2021 23:50 Perfluorohexanoic acid (PFHxA)ug/L0.0093 0.0020 08/26/2021 23:50 Perfluorooctanesulfonic acid (PFOS)ug/L0.028 0.0020 08/26/2021 23:50 Perfluorooctanoic acid (PFOA)ug/L0.0066 0.0020 202108210020 SLR-46 08/26/2021 04:52 Perfluorobutanesulfonic acid (PFBS)ug/L0.015 0.0020 08/26/2021 04:52 Perfluoroheptanoic acid (PFHpA)ug/L0.0067 0.0020 08/26/2021 04:52 Perfluorohexanesulfonic acid (PFHxS)ug/L0.035 0.0020 08/26/2021 04:52 Perfluorohexanoic acid (PFHxA)ug/L0.010 0.0020 08/26/2021 04:52 Perfluorononanoic acid (PFNA)ug/L0.0021 0.0020 08/26/2021 04:52 Perfluorooctanesulfonic acid (PFOS)ug/L0.026 0.0020 08/26/2021 04:52 Perfluorooctanoic acid (PFOA)ug/L0.0066 0.0020 Hits Report - Page 1 of 1SUMMARY OF POSITIVE DATA ONLY Page 8 of 32 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/21/2021 1028 954075 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch SLR-50 (202108210014)Sampled on 08/19/2021 1630 EPA 537.1 - EPA Method 537.1 08/24/21 1350963 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:17 1349947 08/24/21 1350963 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:17 1349947 08/24/21 1350963 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:17 1349947 08/24/21 1350963 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:17 1349947 08/24/21 1350963 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND (M1)08/26/21 21:17 1349947 08/24/21 1350963 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:17 1349947 08/24/21 1350963 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.015 08/26/21 21:17 1349947 08/24/21 1350963 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:17 1349947 08/24/21 1350963 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:17 1349947 08/24/21 1350963 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0066 08/26/21 21:17 1349947 08/24/21 1350963 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.040 08/26/21 21:17 1349947 08/24/21 1350963 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0094 08/26/21 21:17 1349947 08/24/21 1350963 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 10.0025 08/26/21 21:17 1349947 08/24/21 1350963 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.034 08/26/21 21:17 1349947 08/24/21 1350963 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0068 08/26/21 21:17 1349947 08/24/21 1350963 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:17 1349947 08/24/21 1350963 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:17 1349947 08/24/21 1350963 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:17 1349947 08/24/21 1350963 13C2-PFDA %(EPA 537.1)1122 08/26/21 21:17 1349947 08/24/21 1350963 13C2-PFHxA %(EPA 537.1)1106 08/26/21 21:17 1349947 08/24/21 1350963 13C2-PFOA– IS#1 %(EPA 537.1)1108 08/26/21 21:17 1349947 08/24/21 1350963 13C3-HFPO-DA %(EPA 537.1)197 08/26/21 21:17 1349947 08/24/21 1350963 13C4-PFOS– IS#2 %(EPA 537.1)197 08/26/21 21:17 1349947 08/24/21 1350963 d3-NMeFOSAA %(EPA 537.1)1120 08/26/21 21:17 1349947 08/24/21 1350963 d5-NEtFOSAA %(EPA 537.1)1123 08/26/21 21:17 1349947 SLR-45 (202108210016)Sampled on 08/19/2021 1650 EPA 537.1 - EPA Method 537.1 08/24/21 1350963 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:36 1349947 08/24/21 1350963 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:36 1349947 Data Report - Page 1 of 6 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 9 of 32 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/21/2021 1028 954075 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/24/21 1350963 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:36 1349947 08/24/21 1350963 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:36 1349947 08/24/21 1350963 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:36 1349947 08/24/21 1350963 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:36 1349947 08/24/21 1350963 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.014 08/26/21 21:36 1349947 08/24/21 1350963 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:36 1349947 08/24/21 1350963 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:36 1349947 08/24/21 1350963 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0062 08/26/21 21:36 1349947 08/24/21 1350963 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.039 08/26/21 21:36 1349947 08/24/21 1350963 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0097 08/26/21 21:36 1349947 08/24/21 1350963 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 10.0024 08/26/21 21:36 1349947 08/24/21 1350963 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.034 08/26/21 21:36 1349947 08/24/21 1350963 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0072 08/26/21 21:36 1349947 08/24/21 1350963 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:36 1349947 08/24/21 1350963 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:36 1349947 08/24/21 1350963 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 21:36 1349947 08/24/21 1350963 13C2-PFDA %(EPA 537.1)1123 08/26/21 21:36 1349947 08/24/21 1350963 13C2-PFHxA %(EPA 537.1)1110 08/26/21 21:36 1349947 08/24/21 1350963 13C2-PFOA– IS#1 %(EPA 537.1)1107 08/26/21 21:36 1349947 08/24/21 1350963 13C3-HFPO-DA %(EPA 537.1)196 08/26/21 21:36 1349947 08/24/21 1350963 13C4-PFOS– IS#2 %(EPA 537.1)199 08/26/21 21:36 1349947 08/24/21 1350963 d3-NMeFOSAA %(EPA 537.1)1130 08/26/21 21:36 1349947 08/24/21 1350963 d5-NEtFOSAA %(EPA 537.1)1112 08/26/21 21:36 1349947 SLR-35 (202108210017)Sampled on 08/19/2021 1720 EPA 537.1 - EPA Method 537.1 08/24/21 1350963 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 08/24/21 1350963 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 08/24/21 1350963 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 08/24/21 1350963 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 08/24/21 1350963 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 08/24/21 1350963 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 Data Report - Page 2 of 6 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 10 of 32 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/21/2021 1028 954075 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/24/21 1350963 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.015 08/26/21 23:50 1349947 08/24/21 1350963 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 08/24/21 1350963 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 08/24/21 1350963 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0064 08/26/21 23:50 1349947 08/24/21 1350963 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.038 08/26/21 23:50 1349947 08/24/21 1350963 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0093 08/26/21 23:50 1349947 08/24/21 1350963 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 08/24/21 1350963 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.028 08/26/21 23:50 1349947 08/24/21 1350963 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0066 08/26/21 23:50 1349947 08/24/21 1350963 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 08/24/21 1350963 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 08/24/21 1350963 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 23:50 1349947 08/24/21 1350963 13C2-PFDA %(EPA 537.1)1118 08/26/21 23:50 1349947 08/24/21 1350963 13C2-PFHxA %(EPA 537.1)1105 08/26/21 23:50 1349947 08/24/21 1350963 13C2-PFOA– IS#1 %(EPA 537.1)1111 08/26/21 23:50 1349947 08/24/21 1350963 13C3-HFPO-DA %(EPA 537.1)1101 08/26/21 23:50 1349947 08/24/21 1350963 13C4-PFOS– IS#2 %(EPA 537.1)199 08/26/21 23:50 1349947 08/24/21 1350963 d3-NMeFOSAA %(EPA 537.1)1132 08/26/21 23:50 1349947 08/24/21 1350963 d5-NEtFOSAA %(EPA 537.1)1113 08/26/21 23:50 1349947 SLR-EB (202108210018)Sampled on 08/19/2021 1535 EPA 537.1 - EPA Method 537.1 08/29/21 1351565 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND (E6)08/31/21 08:25 1351154 08/29/21 1351565 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND (E6)08/31/21 08:25 1351154 08/29/21 1351565 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 Data Report - Page 3 of 6 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 11 of 32 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/21/2021 1028 954075 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/29/21 1351565 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/31/21 08:25 1351154 08/29/21 1351565 13C2-PFDA %(EPA 537.1)1121 08/31/21 08:25 1351154 08/29/21 1351565 13C2-PFHxA %(EPA 537.1)1119 08/31/21 08:25 1351154 08/29/21 1351565 13C2-PFOA– IS#1 %(EPA 537.1)199 08/31/21 08:25 1351154 08/29/21 1351565 13C3-HFPO-DA %(EPA 537.1)1114 08/31/21 08:25 1351154 08/29/21 1351565 13C4-PFOS– IS#2 %(EPA 537.1)195 08/31/21 08:25 1351154 08/29/21 1351565 d3-NMeFOSAA %(EPA 537.1)168 08/31/21 08:25 1351154 08/29/21 1351565 d5-NEtFOSAA %(EPA 537.1)1174 (E6)08/31/21 08:25 1351154 Field Blank - HOLD (202108210019)Sampled on 08/19/2021 1538 EPA 537.1 - EPA Method 537.1 08/31/21 1352080 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 08/31/21 1352080 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 09/01/21 20:08 1351507 Data Report - Page 4 of 6 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 12 of 32 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/21/2021 1028 954075 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/31/21 1352080 13C2-PFDA %(EPA 537.1)1111 09/01/21 20:08 1351507 08/31/21 1352080 13C2-PFHxA %(EPA 537.1)1122 09/01/21 20:08 1351507 08/31/21 1352080 13C2-PFOA– IS#1 %(EPA 537.1)1103 09/01/21 20:08 1351507 08/31/21 1352080 13C3-HFPO-DA %(EPA 537.1)1114 09/01/21 20:08 1351507 08/31/21 1352080 13C4-PFOS– IS#2 %(EPA 537.1)1101 09/01/21 20:08 1351507 08/31/21 1352080 d3-NMeFOSAA %(EPA 537.1)199 09/01/21 20:08 1351507 08/31/21 1352080 d5-NEtFOSAA %(EPA 537.1)1107 09/01/21 20:08 1351507 SLR-46 (202108210020)Sampled on 08/19/2021 1700 EPA 537.1 - EPA Method 537.1 08/24/21 1350904 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 04:52 1350078 08/24/21 1350904 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/26/21 04:52 1350078 08/24/21 1350904 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 04:52 1350078 08/24/21 1350904 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/26/21 04:52 1350078 08/24/21 1350904 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 04:52 1350078 08/24/21 1350904 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/26/21 04:52 1350078 08/24/21 1350904 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.015 08/26/21 04:52 1350078 08/24/21 1350904 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 04:52 1350078 08/24/21 1350904 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 04:52 1350078 08/24/21 1350904 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0067 08/26/21 04:52 1350078 08/24/21 1350904 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.035 08/26/21 04:52 1350078 08/24/21 1350904 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.010 08/26/21 04:52 1350078 08/24/21 1350904 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 10.0021 08/26/21 04:52 1350078 08/24/21 1350904 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.026 08/26/21 04:52 1350078 08/24/21 1350904 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0066 08/26/21 04:52 1350078 08/24/21 1350904 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 04:52 1350078 08/24/21 1350904 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 04:52 1350078 08/24/21 1350904 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/26/21 04:52 1350078 08/24/21 1350904 13C2-PFDA %(EPA 537.1)1115 08/26/21 04:52 1350078 08/24/21 1350904 13C2-PFHxA %(EPA 537.1)1114 08/26/21 04:52 1350078 08/24/21 1350904 13C2-PFOA– IS#1 %(EPA 537.1)1102 08/26/21 04:52 1350078 08/24/21 1350904 13C3-HFPO-DA %(EPA 537.1)1110 08/26/21 04:52 1350078 08/24/21 1350904 13C4-PFOS– IS#2 %(EPA 537.1)1101 08/26/21 04:52 1350078 08/24/21 1350904 d3-NMeFOSAA %(EPA 537.1)1112 08/26/21 04:52 1350078 Data Report - Page 5 of 6 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 13 of 32 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/21/2021 1028 954075 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/24/21 1350904 d5-NEtFOSAA %(EPA 537.1)1100 08/26/21 04:52 1350078 Data Report - Page 6 of 6 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 14 of 32 pages Laboratory QC Summary BESST Inc. Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: EPA Method 537.1 Analysis Date: 08/26/2021Prep Batch: 1350078 Analytical Batch: 1350904 SLR-46202108210020 Analyzed by: KAM EPA Method 537.1 Analysis Date: 08/26/2021Prep Batch: 1349947 Analytical Batch: 1350963 SLR-50202108210014 Analyzed by: KAM SLR-45202108210016 Analyzed by: KAM SLR-35202108210017 Analyzed by: KAM EPA Method 537.1 Analysis Date: 08/31/2021Prep Batch: 1351154 Analytical Batch: 1351565 SLR-EB202108210018 Analyzed by: KAM EPA Method 537.1 Analysis Date: 09/01/2021Prep Batch: 1351507 Analytical Batch: 1352080 Field Blank - HOLD202108210019 Analyzed by: KAM QC Summary - Page 1 of 1 Page 15 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: EPA Method 537.1 by EPA 537.1 Analysis Date: 08/26/2021Prep Batch: 1350078 Analytical Batch: 1350904 DUP_202108250100 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid ND ug/L (0-30)ND LCS1 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0238 ug/L 101 (70-130) LCS2 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0234 ug/L 100 (70-130)1.330 MBLK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid <0.000667 ug/L MRL_CHK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.0019 0.00208 ug/L 111 (50-150) MS_202108250099 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.0019 0.00196 ug/L 105 (50-150)ND DUP_202108250100 13C2-PFDA (S)113 %113 (70-130) LCS1 13C2-PFDA (S)100 112 %112 (70-130) LCS2 13C2-PFDA (S)100 111 %111 (70-130) MBLK 13C2-PFDA (S)102 %102 (70-130) MRL_CHK 13C2-PFDA (S)100 111 %111 (70-130) MS_202108250099 13C2-PFDA (S)100 114 %115 (70-130) DUP_202108250100 13C2-PFHxA (S)115 %115 (70-130) LCS1 13C2-PFHxA (S)100 115 %115 (70-130) LCS2 13C2-PFHxA (S)100 118 %118 (70-130) MBLK 13C2-PFHxA (S)108 %108 (70-130) MRL_CHK 13C2-PFHxA (S)100 116 %116 (70-130) MS_202108250099 13C2-PFHxA (S)100 116 %116 (70-130) DUP_202108250100 13C2-PFOA– IS#1 (I)103 %103 (50-150) LCS1 13C2-PFOA– IS#1 (I)100 104 %104 (50-150) LCS2 13C2-PFOA– IS#1 (I)100 103 %103 (50-150) MBLK 13C2-PFOA– IS#1 (I)107 %107 (50-150) MRL_CHK 13C2-PFOA– IS#1 (I)100 104 %104 (50-150) MS_202108250099 13C2-PFOA– IS#1 (I)100 105 %105 (50-150) DUP_202108250100 13C3-HFPO-DA (S)110 %110 (70-130) LCS1 13C3-HFPO-DA (S)100 107 %107 (70-130) LCS2 13C3-HFPO-DA (S)100 111 %111 (70-130) MBLK 13C3-HFPO-DA (S)102 %102 (70-130) MRL_CHK 13C3-HFPO-DA (S)100 109 %109 (70-130) MS_202108250099 13C3-HFPO-DA (S)100 114 %114 (70-130) DUP_202108250100 13C4-PFOS– IS#2 (I)103 %103 (50-150) LCS1 13C4-PFOS– IS#2 (I)100 103 %103 (50-150) LCS2 13C4-PFOS– IS#2 (I)100 104 %104 (50-150) MBLK 13C4-PFOS– IS#2 (I)106 %106 (50-150) MRL_CHK 13C4-PFOS– IS#2 (I)100 103 %103 (50-150) QC Report - Page 1 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 16 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: MS_202108250099 13C4-PFOS– IS#2 (I)100 104 %104 (50-150) DUP_202108250100 4,8-dioxa-3H-perfluorononanoic acid (ADONA)ND ug/L (0-30)ND LCS1 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0247 ug/L 105 (70-130) LCS2 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0252 ug/L 107 (70-130)2.430 MBLK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)<0.000667 ug/L MRL_CHK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00213 ug/L 113 (50-150) MS_202108250099 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00215 ug/L 112 (50-150)ND DUP_202108250100 9-chlorohexadecafluoro-3-oxanone-sulfonic acid ND ug/L (0-30)ND LCS1 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0229 ug/L 98 (70-130) LCS2 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0228 ug/L 98 (70-130)0.4430 MBLK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid <0.000667 ug/L MRL_CHK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00191 ug/L 103 (50-150) MS_202108250099 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00183 ug/L 98 (50-150)ND DUP_202108250100 d3-NMeFOSAA (I)116 %116 (50-150) LCS1 d3-NMeFOSAA (I)100 110 %110 (50-150) LCS2 d3-NMeFOSAA (I)100 111 %111 (50-150) MBLK d3-NMeFOSAA (I)102 %102 (50-150) MRL_CHK d3-NMeFOSAA (I)100 110 %110 (50-150) MS_202108250099 d3-NMeFOSAA (I)100 115 %115 (50-150) DUP_202108250100 d5-NEtFOSAA (S)95.3 %95 (70-130) LCS1 d5-NEtFOSAA (S)100 97.8 %98 (70-130) LCS2 d5-NEtFOSAA (S)100 96.6 %97 (70-130) MBLK d5-NEtFOSAA (S)97.7 %98 (70-130) MRL_CHK d5-NEtFOSAA (S)100 98.4 %98 (70-130) MS_202108250099 d5-NEtFOSAA (S)100 101 %101 (70-130) DUP_202108250100 Hexafluoropropylene oxide dimer acid (HFPO-DA)ND ug/L (0-30)ND LCS1 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0251 ug/L 100 (70-130) LCS2 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0258 ug/L 103 (70-130)2.830 MBLK Hexafluoropropylene oxide dimer acid (HFPO-DA)<0.000667 ug/L MRL_CHK Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00211 ug/L 106 (50-150) MS_202108250099 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00221 ug/L 111 (50-150)ND DUP_202108250100 N-ethyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS1 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0242 ug/L 97 (70-130) LCS2 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0243 ug/L 97 (70-130)0.4130 MBLK N-ethyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00212 ug/L 106 (50-150) MS_202108250099 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00205 ug/L 102 (50-150)ND DUP_202108250100 N-methyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND QC Report - Page 2 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 17 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: LCS1 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0242 ug/L 97 (70-130) LCS2 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0244 ug/L 98 (70-130)0.8230 MBLK N-methyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-methyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00206 ug/L 103 (50-150) MS_202108250099 N-methyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00200 ug/L 100 (50-150)ND DUP_202108250100 Perfluorobutanesulfonic acid (PFBS)0.00326 ug/L (0-30)0.0031 LCS1 Perfluorobutanesulfonic acid (PFBS)0.022 0.0222 ug/L 100 (70-130) LCS2 Perfluorobutanesulfonic acid (PFBS)0.022 0.0219 ug/L 99 (70-130)1.430 MBLK Perfluorobutanesulfonic acid (PFBS)<0.000667 ug/L MRL_CHK Perfluorobutanesulfonic acid (PFBS)0.0018 0.00186 ug/L 105 (50-150) MS_202108250099 Perfluorobutanesulfonic acid (PFBS)0.0018 0.00718 ug/L 88 (50-150)0.0056 DUP_202108250100 Perfluorodecanoic acid (PFDA)ND ug/L (0-30)ND LCS1 Perfluorodecanoic acid (PFDA)0.025 0.0272 ug/L 109 (70-130) LCS2 Perfluorodecanoic acid (PFDA)0.025 0.0274 ug/L 110 (70-130)0.7330 MBLK Perfluorodecanoic acid (PFDA)<0.000667 ug/L MRL_CHK Perfluorodecanoic acid (PFDA)0.002 0.00223 ug/L 111 (50-150) MS_202108250099 Perfluorodecanoic acid (PFDA)0.002 0.00224 ug/L 112 (50-150)ND DUP_202108250100 Perfluorododecanoic acid (PFDoA)ND ug/L (0-30)ND LCS1 Perfluorododecanoic acid (PFDoA)0.025 0.0254 ug/L 102 (70-130) LCS2 Perfluorododecanoic acid (PFDoA)0.025 0.0267 ug/L 107 (70-130)5.030 MBLK Perfluorododecanoic acid (PFDoA)<0.000667 ug/L MRL_CHK Perfluorododecanoic acid (PFDoA)0.002 0.00216 ug/L 108 (50-150) MS_202108250099 Perfluorododecanoic acid (PFDoA)0.002 0.00216 ug/L 108 (50-150)ND DUP_202108250100 Perfluoroheptanoic acid (PFHpA)0.00249 ug/L (0-30)0.0024 LCS1 Perfluoroheptanoic acid (PFHpA)0.025 0.0275 ug/L 110 (70-130) LCS2 Perfluoroheptanoic acid (PFHpA)0.025 0.0280 ug/L 112 (70-130)2.230 MBLK Perfluoroheptanoic acid (PFHpA)<0.000667 ug/L MRL_CHK Perfluoroheptanoic acid (PFHpA)0.002 0.00227 ug/L 113 (50-150) MS_202108250099 Perfluoroheptanoic acid (PFHpA)0.002 0.00525 ug/L 113 (50-150)0.0030 DUP_202108250100 Perfluorohexanesulfonic acid (PFHxS)ND ug/L (0-30)ND LCS1 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0242 ug/L 106 (70-130) LCS2 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0241 ug/L 106 (70-130)0.4130 MBLK Perfluorohexanesulfonic acid (PFHxS)<0.000667 ug/L MRL_CHK Perfluorohexanesulfonic acid (PFHxS)0.0018 0.00201 ug/L 110 (50-150) MS_202108250099 Perfluorohexanesulfonic acid (PFHxS)0.0018 0.00408 ug/L 105 (50-150)0.0022 DUP_202108250100 Perfluorohexanoic acid (PFHxA)0.00569 ug/L (0-30)0.0058 LCS1 Perfluorohexanoic acid (PFHxA)0.025 0.0268 ug/L 107 (70-130) LCS2 Perfluorohexanoic acid (PFHxA)0.025 0.0262 ug/L 105 (70-130)2.330 QC Report - Page 3 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 18 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: MBLK Perfluorohexanoic acid (PFHxA)<0.000667 ug/L MRL_CHK Perfluorohexanoic acid (PFHxA)0.002 0.00234 ug/L 117 (50-150) MS_202108250099 Perfluorohexanoic acid (PFHxA)0.002 0.00747 ug/L 104 (50-150)0.0054 DUP_202108250100 Perfluorononanoic acid (PFNA)ND ug/L (0-30)ND LCS1 Perfluorononanoic acid (PFNA)0.025 0.0267 ug/L 107 (70-130) LCS2 Perfluorononanoic acid (PFNA)0.025 0.0273 ug/L 109 (70-130)2.230 MBLK Perfluorononanoic acid (PFNA)<0.000667 ug/L MRL_CHK Perfluorononanoic acid (PFNA)0.002 0.00232 ug/L 116 (50-150) MS_202108250099 Perfluorononanoic acid (PFNA)0.002 0.00267 ug/L 114 (50-150)ND DUP_202108250100 Perfluorooctanesulfonic acid (PFOS)0.00582 ug/L (0-30)0.0057 LCS1 Perfluorooctanesulfonic acid (PFOS)0.023 0.0239 ug/L 103 (70-130) LCS2 Perfluorooctanesulfonic acid (PFOS)0.023 0.0240 ug/L 104 (70-130)0.4230 MBLK Perfluorooctanesulfonic acid (PFOS)<0.000667 ug/L MRL_CHK Perfluorooctanesulfonic acid (PFOS)0.0019 0.00209 ug/L 113 (50-150) MS_202108250099 Perfluorooctanesulfonic acid (PFOS)0.0019 0.00774 ug/L 90 (50-150)0.0061 DUP_202108250100 Perfluorooctanoic acid (PFOA)0.00761 ug/L (0-30)2.20.0078 30 LCS1 Perfluorooctanoic acid (PFOA)0.025 0.0261 ug/L 104 (70-130) LCS2 Perfluorooctanoic acid (PFOA)0.025 0.0265 ug/L 106 (70-130)1.530 MBLK Perfluorooctanoic acid (PFOA)<0.000667 ug/L MRL_CHK Perfluorooctanoic acid (PFOA)0.002 0.00232 ug/L 116 (50-150) MS_202108250099 Perfluorooctanoic acid (PFOA)0.002 0.0104 ug/L 83 (50-150)0.0087 DUP_202108250100 Perfluorotetradecanoic acid (PFTA)ND ug/L (0-30)ND LCS1 Perfluorotetradecanoic acid (PFTA)0.025 0.0277 ug/L 111 (70-130) LCS2 Perfluorotetradecanoic acid (PFTA)0.025 0.0276 ug/L 110 (70-130)0.3630 MBLK Perfluorotetradecanoic acid (PFTA)<0.000667 ug/L MRL_CHK Perfluorotetradecanoic acid (PFTA)0.002 0.00267 ug/L 133 (50-150) MS_202108250099 Perfluorotetradecanoic acid (PFTA)0.002 0.00286 ug/L 124 (50-150)ND DUP_202108250100 Perfluorotridecanoic acid (PFTrDA)ND ug/L (0-30)ND LCS1 Perfluorotridecanoic acid (PFTrDA)0.025 0.0272 ug/L 109 (70-130) LCS2 Perfluorotridecanoic acid (PFTrDA)0.025 0.0270 ug/L 108 (70-130)0.7430 MBLK Perfluorotridecanoic acid (PFTrDA)<0.000667 ug/L MRL_CHK Perfluorotridecanoic acid (PFTrDA)0.002 0.00229 ug/L 114 (50-150) MS_202108250099 Perfluorotridecanoic acid (PFTrDA)0.002 0.00236 ug/L 118 (50-150)ND DUP_202108250100 Perfluoroundecanoic acid (PFUnA)ND ug/L (0-30)ND LCS1 Perfluoroundecanoic acid (PFUnA)0.025 0.0269 ug/L 108 (70-130) LCS2 Perfluoroundecanoic acid (PFUnA)0.025 0.0266 ug/L 107 (70-130)1.130 MBLK Perfluoroundecanoic acid (PFUnA)<0.000667 ug/L MRL_CHK Perfluoroundecanoic acid (PFUnA)0.002 0.00224 ug/L 112 (50-150) QC Report - Page 4 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 19 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: MS_202108250099 Perfluoroundecanoic acid (PFUnA)0.002 0.00216 ug/L 108 (50-150)ND EPA Method 537.1 by EPA 537.1 Analysis Date: 08/26/2021Prep Batch: 1349947 Analytical Batch: 1350963 DUP_202108210016 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid ND ug/L (0-30)ND LCS3 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.047 0.0468 ug/L 99 (70-130) LCS4 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.047 0.0454 ug/L 96 (70-130)3.030 MBLK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid <0.000667 ug/L MRL_CHK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.0019 0.00179 ug/L 95 (50-150) MS2_202108210014 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.047 0.0360 ug/L 77 (70-130)ND DUP_202108210016 13C2-PFDA (S)123 %123 (70-130) LCS3 13C2-PFDA (S)100 104 %104 (70-130) LCS4 13C2-PFDA (S)100 108 %108 (70-130) MBLK 13C2-PFDA (S)108 %108 (70-130) MRL_CHK 13C2-PFDA (S)100 107 %107 (70-130) MS2_202108210014 13C2-PFDA (S)100 114 %114 (70-130) DUP_202108210016 13C2-PFHxA (S)109 %109 (70-130) LCS3 13C2-PFHxA (S)100 104 %104 (70-130) LCS4 13C2-PFHxA (S)100 110 %111 (70-130) MBLK 13C2-PFHxA (S)98.2 %98 (70-130) MRL_CHK 13C2-PFHxA (S)100 97.3 %97 (70-130) MS2_202108210014 13C2-PFHxA (S)100 99.3 %99 (70-130) DUP_202108210016 13C2-PFOA– IS#1 (I)107 %107 (50-150) LCS3 13C2-PFOA– IS#1 (I)100 109 %109 (50-150) LCS4 13C2-PFOA– IS#1 (I)100 106 %106 (50-150) MBLK 13C2-PFOA– IS#1 (I)109 %109 (50-150) MRL_CHK 13C2-PFOA– IS#1 (I)100 112 %112 (50-150) MS2_202108210014 13C2-PFOA– IS#1 (I)100 110 %110 (50-150) DUP_202108210016 13C3-HFPO-DA (S)97.2 %97 (70-130) LCS3 13C3-HFPO-DA (S)100 95.5 %96 (70-130) LCS4 13C3-HFPO-DA (S)100 102 %102 (70-130) MBLK 13C3-HFPO-DA (S)93.8 %94 (70-130) MRL_CHK 13C3-HFPO-DA (S)100 94.2 %94 (70-130) MS2_202108210014 13C3-HFPO-DA (S)100 96.5 %96 (70-130) DUP_202108210016 13C4-PFOS– IS#2 (I)99.6 %100 (50-150) LCS3 13C4-PFOS– IS#2 (I)100 95.3 %95 (50-150) LCS4 13C4-PFOS– IS#2 (I)100 95.0 %95 (50-150) MBLK 13C4-PFOS– IS#2 (I)97.8 %98 (50-150) QC Report - Page 5 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 20 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: MRL_CHK 13C4-PFOS– IS#2 (I)100 101 %101 (50-150) MS2_202108210014 13C4-PFOS– IS#2 (I)100 91.9 %92 (50-150) DUP_202108210016 4,8-dioxa-3H-perfluorononanoic acid (ADONA)ND ug/L (0-30)ND LCS3 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.049 0.0486 ug/L 100 (70-130) LCS4 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.049 0.0473 ug/L 98 (70-130)2.730 MBLK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)<0.000667 ug/L MRL_CHK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00227 ug/L 120 (50-150) MS2_202108210014 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.049 0.0462 ug/L 95 (70-130)ND DUP_202108210016 9-chlorohexadecafluoro-3-oxanone-sulfonic acid ND ug/L (0-30)ND LCS3 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.047 0.0486 ug/L 104 (70-130) LCS4 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.047 0.0486 ug/L 104 (70-130)0.030 MBLK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid <0.000667 ug/L MRL_CHK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00222 ug/L 119 (50-150) MS2_202108210014 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.047 0.0506 ug/L 109 (70-130)ND DUP_202108210016 d3-NMeFOSAA (I)130 %130 (50-150) LCS3 d3-NMeFOSAA (I)100 120 %120 (50-150) LCS4 d3-NMeFOSAA (I)100 125 %125 (50-150) MBLK d3-NMeFOSAA (I)128 %128 (50-150) MRL_CHK d3-NMeFOSAA (I)100 125 %125 (50-150) MS2_202108210014 d3-NMeFOSAA (I)100 89.5 %90 (50-150) DUP_202108210016 d5-NEtFOSAA (S)107 %107 (70-130) LCS3 d5-NEtFOSAA (S)100 98.7 %99 (70-130) LCS4 d5-NEtFOSAA (S)100 95.0 %95 (70-130) MBLK d5-NEtFOSAA (S)98.6 %99 (70-130) MRL_CHK d5-NEtFOSAA (S)100 104 %104 (70-130) MS2_202108210014 d5-NEtFOSAA (S)100 154 %154 (70-130) DUP_202108210016 Hexafluoropropylene oxide dimer acid (HFPO-DA)ND ug/L (0-30)ND LCS3 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.05 0.0413 ug/L 83 (70-130) LCS4 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.05 0.0404 ug/L 81 (70-130)2.230 MBLK Hexafluoropropylene oxide dimer acid (HFPO-DA)<0.000667 ug/L MRL_CHK Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00172 ug/L 86 (50-150) MS2_202108210014 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.05 0.0394 ug/L 79 (70-130)ND DUP_202108210016 N-ethyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS3 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0541 ug/L 108 (70-130) LCS4 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0491 ug/L 98 (70-130)9.730 MBLK N-ethyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00248 ug/L 124 (50-150) MS2_202108210014 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0766 ug/L 153 (70-130)ND QC Report - Page 6 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 21 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: DUP_202108210016 N-methyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS3 N-methyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0542 ug/L 108 (70-130) LCS4 N-methyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0480 ug/L 96 (70-130)1230 MBLK N-methyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-methyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00233 ug/L 117 (50-150) MS2_202108210014 N-methyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0589 ug/L 118 (70-130)ND DUP_202108210016 Perfluorobutanesulfonic acid (PFBS)0.0155 ug/L (0-30)9.90.014 30 LCS3 Perfluorobutanesulfonic acid (PFBS)0.044 0.0489 ug/L 110 (70-130) LCS4 Perfluorobutanesulfonic acid (PFBS)0.044 0.0469 ug/L 106 (70-130)4.230 MBLK Perfluorobutanesulfonic acid (PFBS)<0.000667 ug/L MRL_CHK Perfluorobutanesulfonic acid (PFBS)0.0018 0.00217 ug/L 123 (50-150) MS2_202108210014 Perfluorobutanesulfonic acid (PFBS)0.044 0.0622 ug/L 106 (70-130)0.015 DUP_202108210016 Perfluorodecanoic acid (PFDA)ND ug/L (0-30)ND LCS3 Perfluorodecanoic acid (PFDA)0.05 0.0502 ug/L 100 (70-130) LCS4 Perfluorodecanoic acid (PFDA)0.05 0.0513 ug/L 103 (70-130)2.230 MBLK Perfluorodecanoic acid (PFDA)<0.000667 ug/L MRL_CHK Perfluorodecanoic acid (PFDA)0.002 0.00245 ug/L 122 (50-150) MS2_202108210014 Perfluorodecanoic acid (PFDA)0.05 0.0544 ug/L 109 (70-130)ND DUP_202108210016 Perfluorododecanoic acid (PFDoA)ND ug/L (0-30)ND LCS3 Perfluorododecanoic acid (PFDoA)0.05 0.0493 ug/L 99 (70-130) LCS4 Perfluorododecanoic acid (PFDoA)0.05 0.0505 ug/L 101 (70-130)2.430 MBLK Perfluorododecanoic acid (PFDoA)<0.000667 ug/L MRL_CHK Perfluorododecanoic acid (PFDoA)0.002 0.00229 ug/L 115 (50-150) MS2_202108210014 Perfluorododecanoic acid (PFDoA)0.05 0.0437 ug/L 87 (70-130)ND DUP_202108210016 Perfluoroheptanoic acid (PFHpA)0.00628 ug/L (0-30)1.90.0062 30 LCS3 Perfluoroheptanoic acid (PFHpA)0.05 0.0512 ug/L 102 (70-130) LCS4 Perfluoroheptanoic acid (PFHpA)0.05 0.0461 ug/L 92 (70-130)1130 MBLK Perfluoroheptanoic acid (PFHpA)<0.000667 ug/L MRL_CHK Perfluoroheptanoic acid (PFHpA)0.002 0.00247 ug/L 123 (50-150) MS2_202108210014 Perfluoroheptanoic acid (PFHpA)0.05 0.0565 ug/L 100 (70-130)0.0066 DUP_202108210016 Perfluorohexanesulfonic acid (PFHxS)0.0370 ug/L (0-30)5.10.039 30 LCS3 Perfluorohexanesulfonic acid (PFHxS)0.046 0.0502 ug/L 110 (70-130) LCS4 Perfluorohexanesulfonic acid (PFHxS)0.046 0.0500 ug/L 110 (70-130)0.4030 MBLK Perfluorohexanesulfonic acid (PFHxS)<0.000667 ug/L MRL_CHK Perfluorohexanesulfonic acid (PFHxS)0.0018 0.00223 ug/L 122 (50-150) MS2_202108210014 Perfluorohexanesulfonic acid (PFHxS)0.046 0.0902 ug/L 110 (70-130)0.040 DUP_202108210016 Perfluorohexanoic acid (PFHxA)0.00924 ug/L (0-30)5.00.0097 30 LCS3 Perfluorohexanoic acid (PFHxA)0.05 0.0520 ug/L 104 (70-130) QC Report - Page 7 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 22 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: LCS4 Perfluorohexanoic acid (PFHxA)0.05 0.0531 ug/L 106 (70-130)2.130 MBLK Perfluorohexanoic acid (PFHxA)<0.000667 ug/L MRL_CHK Perfluorohexanoic acid (PFHxA)0.002 0.00250 ug/L 125 (50-150) MS2_202108210014 Perfluorohexanoic acid (PFHxA)0.05 0.0570 ug/L 95 (70-130)0.0094 DUP_202108210016 Perfluorononanoic acid (PFNA)0.00213 ug/L (0-30)0.0024 LCS3 Perfluorononanoic acid (PFNA)0.05 0.0490 ug/L 98 (70-130) LCS4 Perfluorononanoic acid (PFNA)0.05 0.0484 ug/L 97 (70-130)1.230 MBLK Perfluorononanoic acid (PFNA)<0.000667 ug/L MRL_CHK Perfluorononanoic acid (PFNA)0.002 0.00234 ug/L 117 (50-150) MS2_202108210014 Perfluorononanoic acid (PFNA)0.05 0.0507 ug/L 96 (70-130)0.0025 DUP_202108210016 Perfluorooctanesulfonic acid (PFOS)0.0293 ug/L (0-30)140.034 30 LCS3 Perfluorooctanesulfonic acid (PFOS)0.046 0.0503 ug/L 109 (70-130) LCS4 Perfluorooctanesulfonic acid (PFOS)0.046 0.0488 ug/L 105 (70-130)3.030 MBLK Perfluorooctanesulfonic acid (PFOS)<0.000667 ug/L MRL_CHK Perfluorooctanesulfonic acid (PFOS)0.0019 0.00226 ug/L 122 (50-150) MS2_202108210014 Perfluorooctanesulfonic acid (PFOS)0.046 0.0811 ug/L 101 (70-130)0.034 DUP_202108210016 Perfluorooctanoic acid (PFOA)0.00673 ug/L (0-30)7.40.0072 30 LCS3 Perfluorooctanoic acid (PFOA)0.05 0.0525 ug/L 105 (70-130) LCS4 Perfluorooctanoic acid (PFOA)0.05 0.0532 ug/L 106 (70-130)1.330 MBLK Perfluorooctanoic acid (PFOA)<0.000667 ug/L MRL_CHK Perfluorooctanoic acid (PFOA)0.002 0.00262 ug/L 131 (50-150) MS2_202108210014 Perfluorooctanoic acid (PFOA)0.05 0.0564 ug/L 99 (70-130)0.0068 DUP_202108210016 Perfluorotetradecanoic acid (PFTA)ND ug/L (0-30)ND LCS3 Perfluorotetradecanoic acid (PFTA)0.05 0.0483 ug/L 97 (70-130) LCS4 Perfluorotetradecanoic acid (PFTA)0.05 0.0489 ug/L 98 (70-130)1.230 MBLK Perfluorotetradecanoic acid (PFTA)<0.000667 ug/L MRL_CHK Perfluorotetradecanoic acid (PFTA)0.002 0.00222 ug/L 111 (50-150) MS2_202108210014 Perfluorotetradecanoic acid (PFTA)0.05 0.0444 ug/L 89 (70-130)ND DUP_202108210016 Perfluorotridecanoic acid (PFTrDA)ND ug/L (0-30)ND LCS3 Perfluorotridecanoic acid (PFTrDA)0.05 0.0466 ug/L 93 (70-130) LCS4 Perfluorotridecanoic acid (PFTrDA)0.05 0.0459 ug/L 92 (70-130)1.530 MBLK Perfluorotridecanoic acid (PFTrDA)<0.000667 ug/L MRL_CHK Perfluorotridecanoic acid (PFTrDA)0.002 0.00212 ug/L 106 (50-150) MS2_202108210014 Perfluorotridecanoic acid (PFTrDA)0.05 0.0392 ug/L 78 (70-130)ND DUP_202108210016 Perfluoroundecanoic acid (PFUnA)ND ug/L (0-30)ND LCS3 Perfluoroundecanoic acid (PFUnA)0.05 0.0464 ug/L 93 (70-130) LCS4 Perfluoroundecanoic acid (PFUnA)0.05 0.0469 ug/L 94 (70-130)1.130 MBLK Perfluoroundecanoic acid (PFUnA)<0.000667 ug/L QC Report - Page 8 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 23 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: MRL_CHK Perfluoroundecanoic acid (PFUnA)0.002 0.00218 ug/L 109 (50-150) MS2_202108210014 Perfluoroundecanoic acid (PFUnA)0.05 0.0464 ug/L 93 (70-130)ND EPA Method 537.1 by EPA 537.1 Analysis Date: 08/31/2021Prep Batch: 1351154 Analytical Batch: 1351565 DUP_202108300102 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid ND ug/L (0-30)ND LCS3 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.047 0.0499 ug/L 106 (70-130) LCS4 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.047 0.0498 ug/L 106 (70-130)0.2030 MBLK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid <0.000667 ug/L MRL_CHK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.0019 0.00215 ug/L 114 (50-150) MS1_202108300101 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0232 ug/L 99 (70-130)ND DUP_202108300102 13C2-PFDA (S)106 %106 (70-130) LCS3 13C2-PFDA (S)100 109 %109 (70-130) LCS4 13C2-PFDA (S)100 110 %110 (70-130) MBLK 13C2-PFDA (S)104 %104 (70-130) MRL_CHK 13C2-PFDA (S)100 114 %114 (70-130) MS1_202108300101 13C2-PFDA (S)100 106 %107 (70-130) DUP_202108300102 13C2-PFHxA (S)119 %119 (70-130) LCS3 13C2-PFHxA (S)100 119 %119 (70-130) LCS4 13C2-PFHxA (S)100 119 %119 (70-130) MBLK 13C2-PFHxA (S)115 %115 (70-130) MRL_CHK 13C2-PFHxA (S)100 123 %123 (70-130) MS1_202108300101 13C2-PFHxA (S)100 122 %123 (70-130) DUP_202108300102 13C2-PFOA– IS#1 (I)99.2 %99 (50-150) LCS3 13C2-PFOA– IS#1 (I)100 97.1 %97 (50-150) LCS4 13C2-PFOA– IS#1 (I)100 95.3 %95 (50-150) MBLK 13C2-PFOA– IS#1 (I)102 %102 (50-150) MRL_CHK 13C2-PFOA– IS#1 (I)100 95.7 %96 (50-150) MS1_202108300101 13C2-PFOA– IS#1 (I)100 95.9 %96 (50-150) DUP_202108300102 13C3-HFPO-DA (S)112 %112 (70-130) LCS3 13C3-HFPO-DA (S)100 115 %115 (70-130) LCS4 13C3-HFPO-DA (S)100 114 %114 (70-130) MBLK 13C3-HFPO-DA (S)108 %108 (70-130) MRL_CHK 13C3-HFPO-DA (S)100 116 %116 (70-130) MS1_202108300101 13C3-HFPO-DA (S)100 115 %115 (70-130) DUP_202108300102 13C4-PFOS– IS#2 (I)98.5 %99 (50-150) LCS3 13C4-PFOS– IS#2 (I)100 96.7 %97 (50-150) LCS4 13C4-PFOS– IS#2 (I)100 94.3 %94 (50-150) QC Report - Page 9 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 24 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: MBLK 13C4-PFOS– IS#2 (I)102 %102 (50-150) MRL_CHK 13C4-PFOS– IS#2 (I)100 96.2 %96 (50-150) MS1_202108300101 13C4-PFOS– IS#2 (I)100 98.8 %99 (50-150) DUP_202108300102 4,8-dioxa-3H-perfluorononanoic acid (ADONA)ND ug/L (0-30)ND LCS3 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.049 0.0527 ug/L 109 (70-130) LCS4 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.049 0.0516 ug/L 106 (70-130)2.130 MBLK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)<0.000667 ug/L MRL_CHK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00261 ug/L 138 (50-150) MS1_202108300101 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0265 ug/L 112 (70-130)ND DUP_202108300102 9-chlorohexadecafluoro-3-oxanone-sulfonic acid ND ug/L (0-30)ND LCS3 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.047 0.0475 ug/L 102 (70-130) LCS4 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.047 0.0478 ug/L 102 (70-130)0.6330 MBLK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid <0.000667 ug/L MRL_CHK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00202 ug/L 108 (50-150) MS1_202108300101 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0220 ug/L 95 (70-130)ND DUP_202108300102 d3-NMeFOSAA (I)95.7 %96 (50-150) LCS3 d3-NMeFOSAA (I)100 94.1 %94 (50-150) LCS4 d3-NMeFOSAA (I)100 94.9 %95 (50-150) MBLK d3-NMeFOSAA (I)95.4 %95 (50-150) MRL_CHK d3-NMeFOSAA (I)100 96.2 %96 (50-150) MS1_202108300101 d3-NMeFOSAA (I)100 94.4 %94 (50-150) DUP_202108300102 d5-NEtFOSAA (S)106 %106 (70-130) LCS3 d5-NEtFOSAA (S)100 106 %106 (70-130) LCS4 d5-NEtFOSAA (S)100 106 %106 (70-130) MBLK d5-NEtFOSAA (S)108 %108 (70-130) MRL_CHK d5-NEtFOSAA (S)100 113 %113 (70-130) MS1_202108300101 d5-NEtFOSAA (S)100 105 %105 (70-130) DUP_202108300102 Hexafluoropropylene oxide dimer acid (HFPO-DA)ND ug/L (0-30)ND LCS3 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.05 0.0556 ug/L 111 (70-130) LCS4 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.05 0.0528 ug/L 106 (70-130)5.030 MBLK Hexafluoropropylene oxide dimer acid (HFPO-DA)<0.000667 ug/L MRL_CHK Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00236 ug/L 118 (50-150) MS1_202108300101 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0266 ug/L 106 (70-130)ND DUP_202108300102 N-ethyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS3 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0507 ug/L 101 (70-130) LCS4 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0506 ug/L 101 (70-130)0.2030 MBLK N-ethyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00236 ug/L 118 (50-150) QC Report - Page 10 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 25 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: MS1_202108300101 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0250 ug/L 100 (70-130)ND DUP_202108300102 N-methyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS3 N-methyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0515 ug/L 103 (70-130) LCS4 N-methyl Perfluorooctanesulfonamidoacetic acid 0.05 0.0515 ug/L 103 (70-130)0.030 MBLK N-methyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-methyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00221 ug/L 110 (50-150) MS1_202108300101 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0251 ug/L 100 (70-130)ND DUP_202108300102 Perfluorobutanesulfonic acid (PFBS)0.00304 ug/L (0-30)0.0030 LCS3 Perfluorobutanesulfonic acid (PFBS)0.044 0.0479 ug/L 108 (70-130) LCS4 Perfluorobutanesulfonic acid (PFBS)0.044 0.0466 ug/L 105 (70-130)2.830 MBLK Perfluorobutanesulfonic acid (PFBS)<0.000667 ug/L MRL_CHK Perfluorobutanesulfonic acid (PFBS)0.0018 0.00211 ug/L 119 (50-150) MS1_202108300101 Perfluorobutanesulfonic acid (PFBS)0.022 0.0259 ug/L 104 (70-130)0.0028 DUP_202108300102 Perfluorodecanoic acid (PFDA)ND ug/L (0-30)ND LCS3 Perfluorodecanoic acid (PFDA)0.05 0.0512 ug/L 102 (70-130) LCS4 Perfluorodecanoic acid (PFDA)0.05 0.0511 ug/L 102 (70-130)0.2030 MBLK Perfluorodecanoic acid (PFDA)<0.000667 ug/L MRL_CHK Perfluorodecanoic acid (PFDA)0.002 0.00239 ug/L 120 (50-150) MS1_202108300101 Perfluorodecanoic acid (PFDA)0.025 0.0247 ug/L 99 (70-130)ND DUP_202108300102 Perfluorododecanoic acid (PFDoA)ND ug/L (0-30)ND LCS3 Perfluorododecanoic acid (PFDoA)0.05 0.0509 ug/L 102 (70-130) LCS4 Perfluorododecanoic acid (PFDoA)0.05 0.0497 ug/L 99 (70-130)2.430 MBLK Perfluorododecanoic acid (PFDoA)<0.000667 ug/L MRL_CHK Perfluorododecanoic acid (PFDoA)0.002 0.00220 ug/L 110 (50-150) MS1_202108300101 Perfluorododecanoic acid (PFDoA)0.025 0.0243 ug/L 97 (70-130)ND DUP_202108300102 Perfluoroheptanoic acid (PFHpA)ND ug/L (0-30)ND LCS3 Perfluoroheptanoic acid (PFHpA)0.05 0.0569 ug/L 114 (70-130) LCS4 Perfluoroheptanoic acid (PFHpA)0.05 0.0546 ug/L 109 (70-130)4.130 MBLK Perfluoroheptanoic acid (PFHpA)<0.000667 ug/L MRL_CHK Perfluoroheptanoic acid (PFHpA)0.002 0.00258 ug/L 129 (50-150) MS1_202108300101 Perfluoroheptanoic acid (PFHpA)0.025 0.0281 ug/L 111 (70-130)ND DUP_202108300102 Perfluorohexanesulfonic acid (PFHxS)ND ug/L (0-30)ND LCS3 Perfluorohexanesulfonic acid (PFHxS)0.046 0.0509 ug/L 112 (70-130) LCS4 Perfluorohexanesulfonic acid (PFHxS)0.046 0.0502 ug/L 110 (70-130)1.430 MBLK Perfluorohexanesulfonic acid (PFHxS)<0.000667 ug/L MRL_CHK Perfluorohexanesulfonic acid (PFHxS)0.0018 0.00228 ug/L 125 (50-150) MS1_202108300101 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0253 ug/L 111 (70-130)ND DUP_202108300102 Perfluorohexanoic acid (PFHxA)0.00555 ug/L (0-30)0.0055 QC Report - Page 11 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 26 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: LCS3 Perfluorohexanoic acid (PFHxA)0.05 0.0564 ug/L 113 (70-130) LCS4 Perfluorohexanoic acid (PFHxA)0.05 0.0558 ug/L 112 (70-130)1.130 MBLK Perfluorohexanoic acid (PFHxA)<0.000667 ug/L MRL_CHK Perfluorohexanoic acid (PFHxA)0.002 0.00245 ug/L 123 (50-150) MS1_202108300101 Perfluorohexanoic acid (PFHxA)0.025 0.0326 ug/L 109 (70-130)0.0054 DUP_202108300102 Perfluorononanoic acid (PFNA)ND ug/L (0-30)ND LCS3 Perfluorononanoic acid (PFNA)0.05 0.0539 ug/L 108 (70-130) LCS4 Perfluorononanoic acid (PFNA)0.05 0.0518 ug/L 104 (70-130)4.030 MBLK Perfluorononanoic acid (PFNA)<0.000667 ug/L MRL_CHK Perfluorononanoic acid (PFNA)0.002 0.00244 ug/L 122 (50-150) MS1_202108300101 Perfluorononanoic acid (PFNA)0.025 0.0259 ug/L 104 (70-130)ND DUP_202108300102 Perfluorooctanesulfonic acid (PFOS)ND ug/L (0-30)ND LCS3 Perfluorooctanesulfonic acid (PFOS)0.046 0.0493 ug/L 107 (70-130) LCS4 Perfluorooctanesulfonic acid (PFOS)0.046 0.0493 ug/L 107 (70-130)0.030 MBLK Perfluorooctanesulfonic acid (PFOS)<0.000667 ug/L MRL_CHK Perfluorooctanesulfonic acid (PFOS)0.0019 0.00225 ug/L 122 (50-150) MS1_202108300101 Perfluorooctanesulfonic acid (PFOS)0.023 0.0241 ug/L 104 (70-130)ND DUP_202108300102 Perfluorooctanoic acid (PFOA)ND ug/L (0-30)ND LCS3 Perfluorooctanoic acid (PFOA)0.05 0.0563 ug/L 113 (70-130) LCS4 Perfluorooctanoic acid (PFOA)0.05 0.0542 ug/L 108 (70-130)3.830 MBLK Perfluorooctanoic acid (PFOA)<0.000667 ug/L MRL_CHK Perfluorooctanoic acid (PFOA)0.002 0.00257 ug/L 129 (50-150) MS1_202108300101 Perfluorooctanoic acid (PFOA)0.025 0.0280 ug/L 111 (70-130)ND DUP_202108300102 Perfluorotetradecanoic acid (PFTA)ND ug/L (0-30)ND LCS3 Perfluorotetradecanoic acid (PFTA)0.05 0.0522 ug/L 104 (70-130) LCS4 Perfluorotetradecanoic acid (PFTA)0.05 0.0502 ug/L 100 (70-130)3.930 MBLK Perfluorotetradecanoic acid (PFTA)<0.000667 ug/L MRL_CHK Perfluorotetradecanoic acid (PFTA)0.002 0.00257 ug/L 128 (50-150) MS1_202108300101 Perfluorotetradecanoic acid (PFTA)0.025 0.0263 ug/L 104 (70-130)ND DUP_202108300102 Perfluorotridecanoic acid (PFTrDA)ND ug/L (0-30)ND LCS3 Perfluorotridecanoic acid (PFTrDA)0.05 0.0532 ug/L 106 (70-130) LCS4 Perfluorotridecanoic acid (PFTrDA)0.05 0.0514 ug/L 103 (70-130)3.430 MBLK Perfluorotridecanoic acid (PFTrDA)<0.000667 ug/L MRL_CHK Perfluorotridecanoic acid (PFTrDA)0.002 0.00239 ug/L 120 (50-150) MS1_202108300101 Perfluorotridecanoic acid (PFTrDA)0.025 0.0254 ug/L 101 (70-130)ND DUP_202108300102 Perfluoroundecanoic acid (PFUnA)ND ug/L (0-30)ND LCS3 Perfluoroundecanoic acid (PFUnA)0.05 0.0520 ug/L 104 (70-130) LCS4 Perfluoroundecanoic acid (PFUnA)0.05 0.0500 ug/L 100 (70-130)3.930 QC Report - Page 12 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 27 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: MBLK Perfluoroundecanoic acid (PFUnA)<0.000667 ug/L MRL_CHK Perfluoroundecanoic acid (PFUnA)0.002 0.00233 ug/L 117 (50-150) MS1_202108300101 Perfluoroundecanoic acid (PFUnA)0.025 0.0243 ug/L 97 (70-130)ND EPA Method 537.1 by EPA 537.1 Analysis Date: 09/01/2021Prep Batch: 1351507 Analytical Batch: 1352080 DUP_202108310505 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid ND ug/L (0-30)ND LCS1 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0240 ug/L 102 (70-130) LCS2 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0248 ug/L 105 (70-130)3.330 MBLK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid <0.000667 ug/L MRL_CHK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.0019 0.00203 ug/L 108 (50-150) MS1_202108310504 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0228 ug/L 97 (70-130)ND DUP_202108310505 13C2-PFDA (S)116 %116 (70-130) LCS1 13C2-PFDA (S)100 108 %108 (70-130) LCS2 13C2-PFDA (S)100 112 %113 (70-130) MBLK 13C2-PFDA (S)109 %109 (70-130) MRL_CHK 13C2-PFDA (S)100 110 %110 (70-130) MS1_202108310504 13C2-PFDA (S)100 117 %117 (70-130) DUP_202108310505 13C2-PFHxA (S)123 %123 (70-130) LCS1 13C2-PFHxA (S)100 121 %121 (70-130) LCS2 13C2-PFHxA (S)100 119 %119 (70-130) MBLK 13C2-PFHxA (S)121 %121 (70-130) MRL_CHK 13C2-PFHxA (S)100 117 %117 (70-130) MS1_202108310504 13C2-PFHxA (S)100 126 %126 (70-130) DUP_202108310505 13C2-PFOA– IS#1 (I)101 %101 (50-150) LCS1 13C2-PFOA– IS#1 (I)100 99.6 %100 (50-150) LCS2 13C2-PFOA– IS#1 (I)100 98.2 %98 (50-150) MBLK 13C2-PFOA– IS#1 (I)103 %103 (50-150) MRL_CHK 13C2-PFOA– IS#1 (I)100 102 %102 (50-150) MS1_202108310504 13C2-PFOA– IS#1 (I)100 97.3 %97 (50-150) DUP_202108310505 13C3-HFPO-DA (S)116 %116 (70-130) LCS1 13C3-HFPO-DA (S)100 120 %120 (70-130) LCS2 13C3-HFPO-DA (S)100 118 %118 (70-130) MBLK 13C3-HFPO-DA (S)111 %111 (70-130) MRL_CHK 13C3-HFPO-DA (S)100 116 %116 (70-130) MS1_202108310504 13C3-HFPO-DA (S)100 123 %123 (70-130) DUP_202108310505 13C4-PFOS– IS#2 (I)102 %102 (50-150) LCS1 13C4-PFOS– IS#2 (I)100 98.7 %99 (50-150) QC Report - Page 13 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 28 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: LCS2 13C4-PFOS– IS#2 (I)100 101 %101 (50-150) MBLK 13C4-PFOS– IS#2 (I)102 %102 (50-150) MRL_CHK 13C4-PFOS– IS#2 (I)100 102 %102 (50-150) MS1_202108310504 13C4-PFOS– IS#2 (I)100 102 %102 (50-150) DUP_202108310505 4,8-dioxa-3H-perfluorononanoic acid (ADONA)ND ug/L (0-30)ND LCS1 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0251 ug/L 106 (70-130) LCS2 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0277 ug/L 117 (70-130)9.830 MBLK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)<0.000667 ug/L MRL_CHK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00221 ug/L 117 (50-150) MS1_202108310504 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0260 ug/L 110 (70-130)ND DUP_202108310505 9-chlorohexadecafluoro-3-oxanone-sulfonic acid ND ug/L (0-30)ND LCS1 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0244 ug/L 105 (70-130) LCS2 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0261 ug/L 112 (70-130)6.730 MBLK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid <0.000667 ug/L MRL_CHK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00208 ug/L 112 (50-150) MS1_202108310504 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0239 ug/L 102 (70-130)ND DUP_202108310505 d3-NMeFOSAA (I)98.6 %99 (50-150) LCS1 d3-NMeFOSAA (I)100 97.4 %97 (50-150) LCS2 d3-NMeFOSAA (I)100 98.6 %99 (50-150) MBLK d3-NMeFOSAA (I)99.8 %100 (50-150) MRL_CHK d3-NMeFOSAA (I)100 101 %101 (50-150) MS1_202108310504 d3-NMeFOSAA (I)100 98.3 %98 (50-150) DUP_202108310505 d5-NEtFOSAA (S)119 %119 (70-130) LCS1 d5-NEtFOSAA (S)100 105 %105 (70-130) LCS2 d5-NEtFOSAA (S)100 105 %105 (70-130) MBLK d5-NEtFOSAA (S)100 %100 (70-130) MRL_CHK d5-NEtFOSAA (S)100 108 %108 (70-130) MS1_202108310504 d5-NEtFOSAA (S)100 114 %114 (70-130) DUP_202108310505 Hexafluoropropylene oxide dimer acid (HFPO-DA)ND ug/L (0-30)ND LCS1 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0260 ug/L 104 (70-130) LCS2 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0286 ug/L 115 (70-130)9.930 MBLK Hexafluoropropylene oxide dimer acid (HFPO-DA)<0.000667 ug/L MRL_CHK Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00219 ug/L 109 (50-150) MS1_202108310504 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0259 ug/L 104 (70-130)ND DUP_202108310505 N-ethyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS1 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0247 ug/L 99 (70-130) LCS2 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0263 ug/L 105 (70-130)6.330 MBLK N-ethyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L QC Report - Page 14 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 29 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: MRL_CHK N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00214 ug/L 107 (50-150) MS1_202108310504 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0256 ug/L 103 (70-130)ND DUP_202108310505 N-methyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS1 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0250 ug/L 100 (70-130) LCS2 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0263 ug/L 105 (70-130)5.130 MBLK N-methyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-methyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00218 ug/L 109 (50-150) MS1_202108310504 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0258 ug/L 103 (70-130)ND DUP_202108310505 Perfluorobutanesulfonic acid (PFBS)0.00224 ug/L (0-30)0.0023 LCS1 Perfluorobutanesulfonic acid (PFBS)0.022 0.0234 ug/L 106 (70-130) LCS2 Perfluorobutanesulfonic acid (PFBS)0.022 0.0255 ug/L 115 (70-130)8.630 MBLK Perfluorobutanesulfonic acid (PFBS)<0.000667 ug/L MRL_CHK Perfluorobutanesulfonic acid (PFBS)0.0018 0.00208 ug/L 118 (50-150) MS1_202108310504 Perfluorobutanesulfonic acid (PFBS)0.022 0.0265 ug/L 102 (70-130)0.0038 DUP_202108310505 Perfluorodecanoic acid (PFDA)ND ug/L (0-30)ND LCS1 Perfluorodecanoic acid (PFDA)0.025 0.0259 ug/L 104 (70-130) LCS2 Perfluorodecanoic acid (PFDA)0.025 0.0278 ug/L 111 (70-130)7.130 MBLK Perfluorodecanoic acid (PFDA)<0.000667 ug/L MRL_CHK Perfluorodecanoic acid (PFDA)0.002 0.00218 ug/L 109 (50-150) MS1_202108310504 Perfluorodecanoic acid (PFDA)0.025 0.0257 ug/L 103 (70-130)ND DUP_202108310505 Perfluorododecanoic acid (PFDoA)ND ug/L (0-30)ND LCS1 Perfluorododecanoic acid (PFDoA)0.025 0.0249 ug/L 100 (70-130) LCS2 Perfluorododecanoic acid (PFDoA)0.025 0.0281 ug/L 112 (70-130)1230 MBLK Perfluorododecanoic acid (PFDoA)<0.000667 ug/L MRL_CHK Perfluorododecanoic acid (PFDoA)0.002 0.00213 ug/L 106 (50-150) MS1_202108310504 Perfluorododecanoic acid (PFDoA)0.025 0.0252 ug/L 101 (70-130)ND DUP_202108310505 Perfluoroheptanoic acid (PFHpA)ND ug/L (0-30)ND LCS1 Perfluoroheptanoic acid (PFHpA)0.025 0.0264 ug/L 105 (70-130) LCS2 Perfluoroheptanoic acid (PFHpA)0.025 0.0312 ug/L 125 (70-130)1730 MBLK Perfluoroheptanoic acid (PFHpA)<0.000667 ug/L MRL_CHK Perfluoroheptanoic acid (PFHpA)0.002 0.00240 ug/L 120 (50-150) MS1_202108310504 Perfluoroheptanoic acid (PFHpA)0.025 0.0299 ug/L 109 (70-130)0.0026 DUP_202108310505 Perfluorohexanesulfonic acid (PFHxS)0.00625 ug/L (0-30)4.00.0060 30 LCS1 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0252 ug/L 111 (70-130) LCS2 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0274 ug/L 120 (70-130)8.430 MBLK Perfluorohexanesulfonic acid (PFHxS)<0.000667 ug/L MRL_CHK Perfluorohexanesulfonic acid (PFHxS)0.0018 0.00219 ug/L 120 (50-150) MS1_202108310504 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0318 ug/L 108 (70-130)0.0071 QC Report - Page 15 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 30 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: DUP_202108310505 Perfluorohexanoic acid (PFHxA)0.00351 ug/L (0-30)0.0033 LCS1 Perfluorohexanoic acid (PFHxA)0.025 0.0267 ug/L 107 (70-130) LCS2 Perfluorohexanoic acid (PFHxA)0.025 0.0307 ug/L 123 (70-130)1430 MBLK Perfluorohexanoic acid (PFHxA)<0.000667 ug/L MRL_CHK Perfluorohexanoic acid (PFHxA)0.002 0.00236 ug/L 118 (50-150) MS1_202108310504 Perfluorohexanoic acid (PFHxA)0.025 0.0326 ug/L 108 (70-130)0.0057 DUP_202108310505 Perfluorononanoic acid (PFNA)ND ug/L (0-30)ND LCS1 Perfluorononanoic acid (PFNA)0.025 0.0266 ug/L 106 (70-130) LCS2 Perfluorononanoic acid (PFNA)0.025 0.0294 ug/L 117 (70-130)1030 MBLK Perfluorononanoic acid (PFNA)<0.000667 ug/L MRL_CHK Perfluorononanoic acid (PFNA)0.002 0.00241 ug/L 121 (50-150) MS1_202108310504 Perfluorononanoic acid (PFNA)0.025 0.0278 ug/L 110 (70-130)ND DUP_202108310505 Perfluorooctanesulfonic acid (PFOS)0.00379 ug/L (0-30)0.0036 LCS1 Perfluorooctanesulfonic acid (PFOS)0.023 0.0248 ug/L 107 (70-130) LCS2 Perfluorooctanesulfonic acid (PFOS)0.023 0.0263 ug/L 114 (70-130)5.930 MBLK Perfluorooctanesulfonic acid (PFOS)<0.000667 ug/L MRL_CHK Perfluorooctanesulfonic acid (PFOS)0.0019 0.00216 ug/L 117 (50-150) MS1_202108310504 Perfluorooctanesulfonic acid (PFOS)0.023 0.0299 ug/L 103 (70-130)0.0061 DUP_202108310505 Perfluorooctanoic acid (PFOA)0.00453 ug/L (0-30)0.0043 LCS1 Perfluorooctanoic acid (PFOA)0.025 0.0269 ug/L 108 (70-130) LCS2 Perfluorooctanoic acid (PFOA)0.025 0.0294 ug/L 118 (70-130)8.930 MBLK Perfluorooctanoic acid (PFOA)<0.000667 ug/L MRL_CHK Perfluorooctanoic acid (PFOA)0.002 0.00239 ug/L 119 (50-150) MS1_202108310504 Perfluorooctanoic acid (PFOA)0.025 0.0348 ug/L 111 (70-130)0.0071 DUP_202108310505 Perfluorotetradecanoic acid (PFTA)ND ug/L (0-30)ND LCS1 Perfluorotetradecanoic acid (PFTA)0.025 0.0247 ug/L 99 (70-130) LCS2 Perfluorotetradecanoic acid (PFTA)0.025 0.0275 ug/L 110 (70-130)1130 MBLK Perfluorotetradecanoic acid (PFTA)<0.000667 ug/L MRL_CHK Perfluorotetradecanoic acid (PFTA)0.002 0.00257 ug/L 129 (50-150) MS1_202108310504 Perfluorotetradecanoic acid (PFTA)0.025 0.0236 ug/L 93 (70-130)ND DUP_202108310505 Perfluorotridecanoic acid (PFTrDA)ND ug/L (0-30)ND LCS1 Perfluorotridecanoic acid (PFTrDA)0.025 0.0245 ug/L 98 (70-130) LCS2 Perfluorotridecanoic acid (PFTrDA)0.025 0.0278 ug/L 111 (70-130)1330 MBLK Perfluorotridecanoic acid (PFTrDA)<0.000667 ug/L MRL_CHK Perfluorotridecanoic acid (PFTrDA)0.002 0.00230 ug/L 115 (50-150) MS1_202108310504 Perfluorotridecanoic acid (PFTrDA)0.025 0.0251 ug/L 100 (70-130)ND DUP_202108310505 Perfluoroundecanoic acid (PFUnA)ND ug/L (0-30)ND LCS1 Perfluoroundecanoic acid (PFUnA)0.025 0.0247 ug/L 99 (70-130) QC Report - Page 16 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 31 of 32 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 954075 PFAS PFAS Report: Project: Group: LCS2 Perfluoroundecanoic acid (PFUnA)0.025 0.0278 ug/L 111 (70-130)1230 MBLK Perfluoroundecanoic acid (PFUnA)<0.000667 ug/L MRL_CHK Perfluoroundecanoic acid (PFUnA)0.002 0.00218 ug/L 109 (50-150) MS1_202108310504 Perfluoroundecanoic acid (PFUnA)0.025 0.0254 ug/L 102 (70-130)ND QC Report - Page 17 of 17 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 32 of 32 pages Thank you for using BSK Associates for your analytical testing needs. In the following pages, you will find the test results for the samples submitted to our laboratory on 8/7/2021. The results have been approved for release by our Laboratory Director as indicated by the authorizing signature below. The samples were analyzed for the test(s) indicated on the Chain of Custody (see attached) and the results relate only to the samples analyzed. BSK certifies that the testing was performed in accordance with the quality system requirements specified in the 2016 TNI Standard. Any deviations from this standard or from the method requirements for each test procedure performed will be annotated alongside the analytical result or noted in the Case Narrative. Unless otherwise noted, the sample results are reported on an as received basis. This certificate of analysis shall not be reproduced except in full, without written approval of the laboratory. If additional clarification of any information is required, please contact your Project Manager, Christian Montiel , at 559-497-2888. Thank you again for using BSK Associates. We value your business and appreciate your loyalty. Sincerely, BESST, Inc. San Rafael, CA 94901 50 Tiburon Street, Suite 7 Dear Miles Koehler, Miles Koehler 8/20/2021 AEH0829 RE: Report for AEH0829 General Christian Montiel, Project Coordinator II Accredited in Accordance with NELAP ORELAP #4021 BSK Associates Laboratory Fresno 1414 Stanislaus St Fresno, CA 93706 559-497-2888 (Main) 559-485-6935 (FAX) Invoice: AE18677 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 1 of 15 AEH0829 General Case Narrative Project and Report Details Client:BESST, Inc. Report To: Project #: Received:8/07/2021 - 10:00 Miles Koehler Invoice To: Invoice Attn: BESST, Inc. Leslie Emmens Project PO#:- Report Due:8/23/2021 Invoice Details SLO Prop 1 Sample Receipt Conditions Default CoolerCooler: Temperature on Receipt ”C: 6.0 Containers Intact Received On Wet Ice Packing Material - Foam Sample(s) were received in temperature range. Initial receipt at BSK-FAL New CoolerCooler: Temperature on Receipt ”C: 5.9 Containers Intact Received On Wet Ice Packing Material - Foam Sample(s) were received in temperature range. Initial receipt at BSK-FAL Data Qualifiers The following qualifiers have been applied to one or more analytical results: ***None applied*** Recipient(s) Report Format Report Distribution CC: Miles Koehler FINAL.RPT Noah Heller FINAL.RPT www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 2 of 15 Certificate of Analysis AEH0829 General SLO Prop 1 Sample Description: HWY101-130-08042021 Sample ID: AEH0829-01 08/04/2021 - 13:02 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/11/21 08/18/21AEH06946401 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 3 of 15 Certificate of Analysis AEH0829 General SLO Prop 1 Sample Description: HWY101-120-08042021 Sample ID: AEH0829-02 08/04/2021 - 15:09 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/11/21 08/18/21AEH06946601 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 4 of 15 Certificate of Analysis AEH0829 General SLO Prop 1 Sample Description: HWY101-75-08042021 Sample ID: AEH0829-03 08/04/2021 - 15:55 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/11/21 08/18/21AEH06946401 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 5 of 15 Certificate of Analysis AEH0829 General SLO Prop 1 Sample Description: HWY101-120-DUP-08052021 Sample ID: AEH0829-04 08/05/2021 - 09:02 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/12/21 08/19/21AEH07796401 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 6 of 15 Certificate of Analysis AEH0829 General SLO Prop 1 Sample Description: HWY101-65-08052021 Sample ID: AEH0829-05 08/05/2021 - 10:20 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/12/21 08/19/21AEH07796401 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 7 of 15 Certificate of Analysis AEH0829 General SLO Prop 1 Sample Description: HWY101-55-08052021 Sample ID: AEH0829-06 08/04/2021 - 12:30 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/11/21 08/18/21AEH06946501 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 8 of 15 Certificate of Analysis AEH0829 General SLO Prop 1 Sample Description: HWY101-45-08052021 Sample ID: AEH0829-07 08/05/2021 - 14:30 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/12/21 08/19/21AEH07796301 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 9 of 15 Certificate of Analysis AEH0829 General SLO Prop 1 Sample Description: HWY101-35-08052021 Sample ID: AEH0829-08 08/05/2021 - 15:35 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 08/12/21 08/19/21AEH07796201 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 10 of 15 AEH0829 General General Chemistry Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH0694 Prepared: 8/11/2021 Analyst: SYYPrep Method: Method Specific Preparation SM 2540C - Quality Control Blank (AEH0694-BLK1) Total Dissolved Solids ND mg/L5.0 08/18/21 Blank Spike (AEH0694-BS1) 70-13097Total Dissolved Solids 1000970mg/L 08/18/21 Duplicate (AEH0694-DUP1), Source: AEH0841-01 102Total Dissolved Solids 740 mg/L5.0 750 08/18/21 Duplicate (AEH0694-DUP2), Source: AEH0621-01 103Total Dissolved Solids 420 mg/L5.0 410 08/18/21 Batch: AEH0779 Prepared: 8/12/2021 Analyst: SYYPrep Method: Method Specific Preparation SM 2540C - Quality Control Blank (AEH0779-BLK1) Total Dissolved Solids ND mg/L5.0 08/19/21 Blank Spike (AEH0779-BS1) 70-13099Total Dissolved Solids 1000990mg/L 08/19/21 Duplicate (AEH0779-DUP1), Source: AEH0679-01 103Total Dissolved Solids 510 mg/L5.0 530 08/19/21 Duplicate (AEH0779-DUP2), Source: AEH0729-02 101Total Dissolved Solids 490 mg/L5.0 480 08/19/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 11 of 15 AEH0829 General Certificate of Analysis Notes: • The Chain of Custody document and Sample Integrity Sheet are part of the analytical report. • Any remaining sample(s) for testing will be disposed of according to BSK’s sample retention policy unless other arrangements are made in advance. • All positive results for EPA Methods 504.1 and 524.2 require the analysis of a Field Reagent Blank (FRB) to confirm that the results are not a contamination error from field sampling steps. If Field Reagent Blanks were not submitted with the samples, this method requirement has not been performed. • Samples collected by BSK Analytical Laboratories were collected in accordance with the BSK Sampling and Collection Standard Operating Procedures. • J-value is equivalent to DNQ (Detected, not quantified) which is a trace value. A trace value is an analyte detected between the MDL and the laboratory reporting limit. This result is of an unknown data quality and is only qualitative (estimated). Baseline noise, calibration curve extrapolation below the lowest calibrator, method blank detections, and integration artifacts can all produce apparent DNQ values, which contribute to the un-reliability of these values. • (1) - Residual chlorine and pH analysis have a 15 minute holding time for both drinking and waste water samples as defined by the EPA and 40 CFR 136. Waste water and ground water (monitoring well) samples must be field filtered to meet the 15 minute holding time for dissolved metals. • Field tests are outside the scope of laboratory accreditation and there is no certification available for field testing. • Summations of analytes (i.e. Total Trihalomethanes) may appear to add individual amounts incorrectly, due to rounding of analyte values occurring before or after the total value is calculated, as well as rounding of the total value. • RL Multiplier is the factor used to adjust the reporting limit (RL) due to variations in sample preparation procedures and dilutions required for matrix interferences. • Due to the subjective nature of the Threshold Odor Method, all characterizations of the detected odor are the opinion of the panel of analysts. The characterizations can be found in Standard Methods 2170B Figure 2170:1. • The MCLs provided in this report (if applicable) represent the primary MCLs for that analyte. • (2) - Formerly known as Bis(2-Chloroisopropyl) ether. Definitions mg/L: Milligrams/Liter (ppm) mg/Kg: Milligrams/Kilogram (ppm) g/L: Micrograms/Liter (ppb) g/Kg: Micrograms/Kilogram (ppb) %: Percent NR: Non-Reportable MDL: Method Detection Limit RL: Reporting Limit: DL x Dilution ND: None Detected below MRL/MDL pCi/L: PicoCuries per Liter RL Mult: RL Multiplier MCL: Maximum Contaminant Limit MDA95: Min. Detected Activity MPN: Most Probable Number CFU: Colony Forming Unit Absent: Less than 1 CFU/100mLs Present: 1 or more CFU/100mLs U: The analyte was not detected at or above the reported sample quantitation limit. BSK is not accredited under the NELAP program for the following parameters:**NA** Please see the individual Subcontract Lab’s report for applicable certifications. www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 12 of 15 AEH0829 General Certificate of Analysis Certifications: Please refer to our website for a copy of our Accredited Fields of Testing under each certification. Fresno 1180State of California - ELAP 4021State of Hawaii 9254479Los Angeles CSD 4021-018NELAP certified CA000792022-1State of Nevada 4021-018State of Oregon - NELAP CA00079EPA - UCMR4 C997-21State of Washington Sacramento 2435State of California - ELAP San Bernardino 2993State of California - ELAP 9254478Los Angeles CSD 4119-005NELAP certified 4119-005State of Oregon - NELAP Vancouver WA100008-014NELAP certified WA100008-014State of Oregon - NELAP C824-20State of Washington www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0829 FINAL 08202021 1444 Page 13 of 15 Page 14 of 15 Page 15 of 15 Laboratory Report for BESST Inc. 50 Tiburon Street Suite 7 San Rafael, CA 94901 Attention: Miles Koehler Project Manager Date of Issue 08/13/2021 EUROFINS EATON ANALYTICAL, LLC L6NW: Rachelle Arada 951013 PFAS PFAS Report: Project: Group: 750 Royal Oaks Drive, Suite 100 Monrovia, California 91016-3629 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) * Accredited in accordance with TNI 2016 and ISO/IEC 17025:2017. * Laboratory certifies that the test results meet all TNI 2016 and ISO/IEC 17025:2017 requirements unless noted under the individual analysis. * Following the cover page are State Certification List, ISO 17025 Accredited Method List, Acknowledgement of Samples Received, Comments, Hits Report, Data Report, QC Summary, QC Report and Regulatory Forms, as applicable. * Test results relate only to the sample(s) tested. * Test results apply to the sample(s) as received, unless otherwise noted in the comments report (ISO/IEC 17025:2017). * This report shall not be reproduced except in full, without the written approval of the laboratory. * This report includes ISO/IEC 17025 and non-ISO 17025 accredited methods. Page 1 of 23 pages STATE CERTIFICATION LIST * NELAP/TNI Recognized Accreditation Bodies State Certification Number State Certification Number Alabama 41060 Montana Cert 0035 Arizona AZ0778 Nebraska Certified Arkansas Certified Nevada CA000062018 California 2813 New Hampshire * 2959 Colorado Certified New Jersey * CA 008 Connecticut PH-0107 New Mexico Certified Delaware CA 006 New York * 11320 Florida * E871024 North Carolina 06701 Georgia 947 North Dakota R-009 Guam 18-005R Oregon * CA200003-005 Hawaii Certified Pennsylvania * 68-565 Idaho Certified Puerto Rico Certified Illinois * 200033 Rhode Island LAO00326 Indiana C-CA-01 South Carolina 87016 Iowa - Asbestos 413 South Dakota Certified Kansas * E-10268 Tennessee TN02839 Kentucky 90107 Texas * T104704230-18-15 Louisiana * LA180000 Utah (Primary AB) * CA00006 Maine CA0006 Vermont VT0114 Maryland 224 Virginia * 460260 Commonwealth of Northern Marianas Is. MP0004 Washington C838 Massachusetts M-CA006 EPA Region 5 Certified Michigan 9906 Los Angeles County Sanitation Districts 10264 Mississippi Certified Page 2 of 23 pages ISO/IEC 17025 Accredited Method List SPECIFIC TESTS METHOD OR TECHNIQUE USED Environ- mental (Drinking Water) Environ- mental (Waste Water) Water as a Component of Food and Bev/Bev/ Bottled Water SPECIFIC TESTS METHOD OR TECHNIQUE USED Environ- mental (Drinking Water) Environ- mental (Waste Water) Water as a Component of Food and Bev/Bev/ Bottled Water 1,2,3-TCP (5 PPT & 0.5 PPT)CA SRL 524M-TCP x x Hexavalent Chromium EPA 218.7 x x 1,4-Dioxane EPA 522 x x Hexavalent Chromium SM 3500-Cr B x 2,3,7,8-TCDD Modified EPA 1613B x x Hormones EPA 539 x x Acrylamide In House Method (2440)x x Hydroxide as OH Calc.SM 2330B x x Algal Toxins/Microcystin In House Method (3570)Kjeldahl Nitrogen EPA 351.2 x Alkalinity SM 2320B x x x Legionella Legiolert x x Ammonia EPA 350.1 x x Mercury EPA 200.8 x x Ammonia SM 4500-NH3 H x x Metals EPA 200.7 / 200.8 x x x Anions and DBPs by IC EPA 300.0 x x x Microcystin LR ELISA (2360)x x Anions and DBPs by IC EPA 300.1 x x Microcystin, Total EPA 546 x x Asbestos EPA 100.2 x x NDMA EEA/Agilent 521.1 In house method (2425)x x BOD / CBOD SM 5210B x x Nitrate/Nitrite Nitrogen EPA 353.2 x x x Bromate In House Method (2447)x x OCL, Pesticides/PCB EPA 505 x x Carbamates EPA 531.2 x x Ortho Phosphate EPA 365.1 x x x Carbonate as CO3 SM 2330B x x x Ortho Phosphorous SM 4500P E x x Carbonyls EPA 556 x x Oxyhalides Disinfection Byproducts EPA 317.0 x x COD EPA 410.4 / SM 5220D x Perchlorate EPA 331.0 x x Chloramines SM 4500-CL G x x x Perchlorate (low and high)EPA 314.0 x x Chlorinated Acids EPA 515.4 x x Perfluorinated Alkyl Acids EPA 537 x x Chlorinated Acids EPA 555 x x Perfluorinated Polutant In house Method (2434)x x Chlorine Dioxide SM 4500-CLO2 D Palin Test x x pH EPA 150.1 x Chlorine -Total/Free/ Combined Residual SM 4500-Cl G x x x pH SM 4500-H+B x x x Conductivity EPA 120.1 x Phenylurea Pesticides/ Herbicides In House Method, based on EPA 532 (2448)x x Conductivity SM 2510B x x x Pseudomonas IDEXX Pseudalert (2461)x x Corrosivity (Langelier Index)SM 2330B x x Radium-226 GA Institute of Tech x x Cyanide, Amenable SM 4500-CN G x x Radium-228 GA Institute of Tech x x Cyanide, Free SM 4500CN F x x x Radon-222 SM 7500RN x x Cyanide, Total EPA 335.4 x x x Residue, Filterable SM 2540C x x x Cyanogen Chloride (screen)In House Method (2470)x x Residue, Non-filterable SM 2540D x Diquat and Paraquat EPA 549.2 x x Residue, Total SM 2540B x x DBP/HAA SM 6251B x x Residue, Volatile EPA 160.4 x Dissolved Oxygen SM 4500-O G x x Semi-VOC EPA 525.2 x x DOC SM 5310C x x Silica SM 4500-Si D x x E. Coli (MTF/EC+MUG)x x Silica SM 4500-SiO2 C x x E. Coli CFR 141.21(f)(6)(i)x x Sulfide SM 4500-S= D x E. Coli SM 9223 x Sulfite SM 4500-SO3B x x x E. Coli (Enumeration)SM 9221B.1/ SM 9221F x x Surfactants SM 5540C x x x E. Coli (Enumeration)SM 9223B x x Taste and Odor Analytes SM 6040E x x EDB/DCBP EPA 504.1 x Total Coliform (P/A)SM 9221 A, B x x EDB/DBCP and DBP EPA 551.1 x x Total Coliform (Enumeration)SM 9221 A, B, C x x EDTA and NTA In House Method (2454)x x Total Coliform / E. coli Colisure SM 9223 x x Endothall EPA 548.1 x x Total Coliform SM 9221B x Endothall In-house Method (2445)x x Total Coliform with Chlorine Present SM 9221B x Enterococci SM 9230B x x Total Coliform / E.coli (P/A and Enumeration)SM 9223 x x Fecal Coliform SM 9221 E (MTF/EC)x TOC SM 5310C x x x Fecal Coliform SM 9221C, E (MTF/EC)x TOX SM 5320B x Fecal Coliform (Enumeration)SM 9221E (MTF/EC)x x Total Phenols EPA 420.1 x Fecal Coliform with Chlorine Present SM 9221E x Total Phenols EPA 420.4 x x x Fecal Streptococci SM 9230B x x Total Phosphorous SM 4500 P E x Fluoride SM 4500-F C x x x Triazine Pesticides & Degradates In House (3617)x x Glyphosate EPA 547 x x Turbidity EPA 180.1 x x x Glyphosate + AMPA In House Method (3618)x x Turbidity SM 2130B x x Gross Alpha/Beta EPA 900.0 x x x Uranium by ICP/MS EPA 200.8 x x Gross Alpha Coprecipitation SM 7110 C x x x UV 254 SM 5910B x Hardness SM 2340B x x x VOC EPA 524.2 x x Heterotrophic Bacteria In House Method (2439)x x VOC In House Method (2411)x x Heterotrophic Bacteria SM 9215 B x x Yeast and Mold SM 9610 x x Hexavalent Chromium EPA 218.6 x x x Field Sampling N/A The tests listed below are accredited and meet the requirements of ISO/IEC 17025 as verified by the ANSI-ASQ National Accreditation Board/A2LA. Refer to Certificate and scope of accreditation (5890) found at: https://www.eurofinsus.com/Eaton 750 Royal Oaks Dr., Ste 100, Monrovia, CA 91016 Tel (626) 386-1100 Fax (866) 988-3757 https://www.eurofinsus.com/Eaton Version 006 Issued: 05/04/20 Page 3 of 23 pages Acknowledgement of Samples Received BESSTINC-CA 951013 PFAS PFAS Client ID: Folder #: Project: Sample Group: Addr:BESST Inc. 50 Tiburon Street Suite 7 San Rafael, CA 94901 Project Manager: Phone: PO #: Rachelle Arada 626-386-1106 SLOPROD1 Attn: Phone: Miles Koehler 415-453-2501 The following samples were received from you on August 06, 2021 at 1141. They have been scheduled for the tests listed below each sample. If this information is incorrect, please contact your service representative. Thank you for using Eurofins Eaton Analytical, LLC. Sample #Sample ID Sample Date 202108060312 08/04/2021 1302HWY101 - 130 - 08042021 @537.1 RUSH Sample Kit 202108060313 08/04/2021 1509HWY101 - 120 - 08042021 @537.1 202108060314 08/04/2021 1555HWY101 - 75 - 08042021 @537.1 202108060315 08/05/2021 0902HWY101 - 120 - Dup - 08052021 @537.1 202108060316 08/05/2021 1020HWY101 - 65 - 08052021 @537.1 202108060317 08/05/2021 1230HWY101 - 55 - 08052021 @537.1 202108060318 08/05/2021 1430HWY101 - 45 - 08052021 @537.1 202108060319 08/05/2021 1535HWY101 - 35 - 08052021 @537.1 @537.1 -- EPA Method 537.1 Test Description Reported: 08/13/2021 Page 1 of 1 750 Royal Oaks Drive, Suite 100, Monrovia, CA 91016 Tel (626) 386-1100 Fax (866) 988-3757 www.EurofinsUS.com/Eaton Page 4 of 23 pages Page 5 of 23 pages Page 6 of 23 pages Page 7 of 23 pages Laboratory Comments BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 951013 PFAS PFAS Report: Project: Group: Flags Legend: M2 - Matrix spike recovery was low; the associated blank spike recovery was acceptable. Comments - Page 1 of 1The Comments Report may be blank if there are no comments for this report. Page 8 of 23 pages Laboratory Hits Samples Received on: 08/06/2021 1141 BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 951013 PFAS PFAS Report: Project: Group: Analyzed Analyte Result Units MRLFederal MCLSample ID 202108060312 HWY101 - 130 - 08042021 08/10/2021 01:33 Perfluorobutanesulfonic acid (PFBS)ug/L0.014 0.0020 08/10/2021 01:33 Perfluoroheptanoic acid (PFHpA)ug/L0.0036 0.0020 08/10/2021 01:33 Perfluorohexanesulfonic acid (PFHxS)ug/L0.028 0.0020 08/10/2021 01:33 Perfluorohexanoic acid (PFHxA)ug/L0.0076 0.0020 08/10/2021 01:33 Perfluorooctanesulfonic acid (PFOS)ug/L0.0092 0.0020 08/10/2021 01:33 Perfluorooctanoic acid (PFOA)ug/L0.0032 0.0020 202108060313 HWY101 - 120 - 08042021 08/10/2021 01:43 Perfluorobutanesulfonic acid (PFBS)ug/L0.013 0.0020 08/10/2021 01:43 Perfluoroheptanoic acid (PFHpA)ug/L0.0037 0.0020 08/10/2021 01:43 Perfluorohexanesulfonic acid (PFHxS)ug/L0.026 0.0020 08/10/2021 01:43 Perfluorohexanoic acid (PFHxA)ug/L0.0074 0.0020 08/10/2021 01:43 Perfluorooctanesulfonic acid (PFOS)ug/L0.0042 0.0020 08/10/2021 01:43 Perfluorooctanoic acid (PFOA)ug/L0.0031 0.0020 202108060314 HWY101 - 75 - 08042021 08/10/2021 00:45 Perfluorobutanesulfonic acid (PFBS)ug/L0.013 0.0020 08/10/2021 00:45 Perfluoroheptanoic acid (PFHpA)ug/L0.0039 0.0020 08/10/2021 00:45 Perfluorohexanesulfonic acid (PFHxS)ug/L0.030 0.0020 08/10/2021 00:45 Perfluorohexanoic acid (PFHxA)ug/L0.0074 0.0020 08/10/2021 00:45 Perfluorooctanesulfonic acid (PFOS)ug/L0.024 0.0020 08/10/2021 00:45 Perfluorooctanoic acid (PFOA)ug/L0.0044 0.0020 202108060315 HWY101 - 120 - Dup - 08052021 08/10/2021 01:52 Perfluorobutanesulfonic acid (PFBS)ug/L0.013 0.0020 08/10/2021 01:52 Perfluoroheptanoic acid (PFHpA)ug/L0.0037 0.0020 08/10/2021 01:52 Perfluorohexanesulfonic acid (PFHxS)ug/L0.028 0.0020 08/10/2021 01:52 Perfluorohexanoic acid (PFHxA)ug/L0.0074 0.0020 08/10/2021 01:52 Perfluorooctanesulfonic acid (PFOS)ug/L0.0086 0.0020 08/10/2021 01:52 Perfluorooctanoic acid (PFOA)ug/L0.0036 0.0020 202108060316 HWY101 - 65 - 08052021 08/10/2021 02:02 Perfluorobutanesulfonic acid (PFBS)ug/L0.013 0.0020 08/10/2021 02:02 Perfluoroheptanoic acid (PFHpA)ug/L0.0039 0.0020 08/10/2021 02:02 Perfluorohexanesulfonic acid (PFHxS)ug/L0.031 0.0020 08/10/2021 02:02 Perfluorohexanoic acid (PFHxA)ug/L0.0077 0.0020 08/10/2021 02:02 Perfluorooctanesulfonic acid (PFOS)ug/L0.024 0.0020 08/10/2021 02:02 Perfluorooctanoic acid (PFOA)ug/L0.0044 0.0020 Hits Report - Page 1 of 2SUMMARY OF POSITIVE DATA ONLY Page 9 of 23 pages Laboratory Hits Samples Received on: 08/06/2021 1141 BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 951013 PFAS PFAS Report: Project: Group: Analyzed Analyte Result Units MRLFederal MCLSample ID 202108060317 HWY101 - 55 - 08052021 08/10/2021 02:11 Perfluorobutanesulfonic acid (PFBS)ug/L0.013 0.0020 08/10/2021 02:11 Perfluoroheptanoic acid (PFHpA)ug/L0.0038 0.0020 08/10/2021 02:11 Perfluorohexanesulfonic acid (PFHxS)ug/L0.029 0.0020 08/10/2021 02:11 Perfluorohexanoic acid (PFHxA)ug/L0.0073 0.0020 08/10/2021 02:11 Perfluorooctanesulfonic acid (PFOS)ug/L0.017 0.0020 08/10/2021 02:11 Perfluorooctanoic acid (PFOA)ug/L0.0039 0.0020 202108060318 HWY101 - 45 - 08052021 08/10/2021 01:04 Perfluorobutanesulfonic acid (PFBS)ug/L0.014 0.0020 08/10/2021 01:04 Perfluoroheptanoic acid (PFHpA)ug/L0.0042 0.0020 08/10/2021 01:04 Perfluorohexanesulfonic acid (PFHxS)ug/L0.035 0.0020 08/10/2021 01:04 Perfluorohexanoic acid (PFHxA)ug/L0.0070 0.0020 08/10/2021 01:04 Perfluorononanoic acid (PFNA)ug/L0.0021 0.0020 08/10/2021 01:04 Perfluorooctanesulfonic acid (PFOS)ug/L0.028 0.0020 08/10/2021 01:04 Perfluorooctanoic acid (PFOA)ug/L0.0051 0.0020 202108060319 HWY101 - 35 - 08052021 08/10/2021 02:21 Perfluorobutanesulfonic acid (PFBS)ug/L0.013 0.0020 08/10/2021 02:21 Perfluoroheptanoic acid (PFHpA)ug/L0.0041 0.0020 08/10/2021 02:21 Perfluorohexanesulfonic acid (PFHxS)ug/L0.034 0.0020 08/10/2021 02:21 Perfluorohexanoic acid (PFHxA)ug/L0.0071 0.0020 08/10/2021 02:21 Perfluorononanoic acid (PFNA)ug/L0.0024 0.0020 08/10/2021 02:21 Perfluorooctanesulfonic acid (PFOS)ug/L0.032 0.0020 08/10/2021 02:21 Perfluorooctanoic acid (PFOA)ug/L0.0051 0.0020 Hits Report - Page 2 of 2SUMMARY OF POSITIVE DATA ONLY Page 10 of 23 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/06/2021 1141 951013 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch HWY101 - 130 - 08042021 (202108060312)Sampled on 08/04/2021 1302 EPA 537.1 - EPA Method 537.1 08/07/21 1347026 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.014 08/10/21 01:33 1346450 08/07/21 1347026 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0036 08/10/21 01:33 1346450 08/07/21 1347026 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.028 08/10/21 01:33 1346450 08/07/21 1347026 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0076 08/10/21 01:33 1346450 08/07/21 1347026 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.0092 08/10/21 01:33 1346450 08/07/21 1347026 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0032 08/10/21 01:33 1346450 08/07/21 1347026 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:33 1346450 08/07/21 1347026 13C2-PFDA %(EPA 537.1)1117 08/10/21 01:33 1346450 08/07/21 1347026 13C2-PFHxA %(EPA 537.1)1117 08/10/21 01:33 1346450 08/07/21 1347026 13C2-PFOA– IS#1 %(EPA 537.1)1104 08/10/21 01:33 1346450 08/07/21 1347026 13C3-HFPO-DA %(EPA 537.1)1114 08/10/21 01:33 1346450 08/07/21 1347026 13C4-PFOS– IS#2 %(EPA 537.1)197 08/10/21 01:33 1346450 08/07/21 1347026 d3-NMeFOSAA %(EPA 537.1)1106 08/10/21 01:33 1346450 08/07/21 1347026 d5-NEtFOSAA %(EPA 537.1)1106 08/10/21 01:33 1346450 HWY101 - 120 - 08042021 (202108060313)Sampled on 08/04/2021 1509 EPA 537.1 - EPA Method 537.1 08/07/21 1347026 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 08/07/21 1347026 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 Data Report - Page 1 of 7 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 11 of 23 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/06/2021 1141 951013 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/07/21 1347026 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 08/07/21 1347026 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 08/07/21 1347026 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 08/07/21 1347026 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 08/07/21 1347026 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.013 08/10/21 01:43 1346450 08/07/21 1347026 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 08/07/21 1347026 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 08/07/21 1347026 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0037 08/10/21 01:43 1346450 08/07/21 1347026 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.026 08/10/21 01:43 1346450 08/07/21 1347026 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0074 08/10/21 01:43 1346450 08/07/21 1347026 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 08/07/21 1347026 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.0042 08/10/21 01:43 1346450 08/07/21 1347026 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0031 08/10/21 01:43 1346450 08/07/21 1347026 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 08/07/21 1347026 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 08/07/21 1347026 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:43 1346450 08/07/21 1347026 13C2-PFDA %(EPA 537.1)1111 08/10/21 01:43 1346450 08/07/21 1347026 13C2-PFHxA %(EPA 537.1)1114 08/10/21 01:43 1346450 08/07/21 1347026 13C2-PFOA– IS#1 %(EPA 537.1)1105 08/10/21 01:43 1346450 08/07/21 1347026 13C3-HFPO-DA %(EPA 537.1)1117 08/10/21 01:43 1346450 08/07/21 1347026 13C4-PFOS– IS#2 %(EPA 537.1)1103 08/10/21 01:43 1346450 08/07/21 1347026 d3-NMeFOSAA %(EPA 537.1)1104 08/10/21 01:43 1346450 08/07/21 1347026 d5-NEtFOSAA %(EPA 537.1)1108 08/10/21 01:43 1346450 HWY101 - 75 - 08042021 (202108060314)Sampled on 08/04/2021 1555 EPA 537.1 - EPA Method 537.1 08/07/21 1347026 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 08/07/21 1347026 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 08/07/21 1347026 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 08/07/21 1347026 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 08/07/21 1347026 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 08/07/21 1347026 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 Data Report - Page 2 of 7 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 12 of 23 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/06/2021 1141 951013 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/07/21 1347026 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.013 08/10/21 00:45 1346450 08/07/21 1347026 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 08/07/21 1347026 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 08/07/21 1347026 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0039 08/10/21 00:45 1346450 08/07/21 1347026 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.030 08/10/21 00:45 1346450 08/07/21 1347026 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0074 08/10/21 00:45 1346450 08/07/21 1347026 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 08/07/21 1347026 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.024 (M2)08/10/21 00:45 1346450 08/07/21 1347026 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0044 08/10/21 00:45 1346450 08/07/21 1347026 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 08/07/21 1347026 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 08/07/21 1347026 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 00:45 1346450 08/07/21 1347026 13C2-PFDA %(EPA 537.1)1117 08/10/21 00:45 1346450 08/07/21 1347026 13C2-PFHxA %(EPA 537.1)1118 08/10/21 00:45 1346450 08/07/21 1347026 13C2-PFOA– IS#1 %(EPA 537.1)1104 08/10/21 00:45 1346450 08/07/21 1347026 13C3-HFPO-DA %(EPA 537.1)1120 08/10/21 00:45 1346450 08/07/21 1347026 13C4-PFOS– IS#2 %(EPA 537.1)1100 08/10/21 00:45 1346450 08/07/21 1347026 d3-NMeFOSAA %(EPA 537.1)1107 08/10/21 00:45 1346450 08/07/21 1347026 d5-NEtFOSAA %(EPA 537.1)1109 08/10/21 00:45 1346450 HWY101 - 120 - Dup - 08052021 (202108060315)Sampled on 08/05/2021 0902 EPA 537.1 - EPA Method 537.1 08/07/21 1347026 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.013 08/10/21 01:52 1346450 08/07/21 1347026 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0037 08/10/21 01:52 1346450 08/07/21 1347026 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.028 08/10/21 01:52 1346450 08/07/21 1347026 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0074 08/10/21 01:52 1346450 Data Report - Page 3 of 7 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 13 of 23 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/06/2021 1141 951013 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/07/21 1347026 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.0086 08/10/21 01:52 1346450 08/07/21 1347026 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0036 08/10/21 01:52 1346450 08/07/21 1347026 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:52 1346450 08/07/21 1347026 13C2-PFDA %(EPA 537.1)1112 08/10/21 01:52 1346450 08/07/21 1347026 13C2-PFHxA %(EPA 537.1)1116 08/10/21 01:52 1346450 08/07/21 1347026 13C2-PFOA– IS#1 %(EPA 537.1)1103 08/10/21 01:52 1346450 08/07/21 1347026 13C3-HFPO-DA %(EPA 537.1)1114 08/10/21 01:52 1346450 08/07/21 1347026 13C4-PFOS– IS#2 %(EPA 537.1)1100 08/10/21 01:52 1346450 08/07/21 1347026 d3-NMeFOSAA %(EPA 537.1)1105 08/10/21 01:52 1346450 08/07/21 1347026 d5-NEtFOSAA %(EPA 537.1)1109 08/10/21 01:52 1346450 HWY101 - 65 - 08052021 (202108060316)Sampled on 08/05/2021 1020 EPA 537.1 - EPA Method 537.1 08/07/21 1347026 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 08/07/21 1347026 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 08/07/21 1347026 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 08/07/21 1347026 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 08/07/21 1347026 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 08/07/21 1347026 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 08/07/21 1347026 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.013 08/10/21 02:02 1346450 08/07/21 1347026 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 08/07/21 1347026 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 08/07/21 1347026 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0039 08/10/21 02:02 1346450 08/07/21 1347026 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.031 08/10/21 02:02 1346450 08/07/21 1347026 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0077 08/10/21 02:02 1346450 08/07/21 1347026 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 08/07/21 1347026 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.024 08/10/21 02:02 1346450 08/07/21 1347026 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0044 08/10/21 02:02 1346450 08/07/21 1347026 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 08/07/21 1347026 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 08/07/21 1347026 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:02 1346450 Data Report - Page 4 of 7 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 14 of 23 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/06/2021 1141 951013 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/07/21 1347026 13C2-PFDA %(EPA 537.1)1117 08/10/21 02:02 1346450 08/07/21 1347026 13C2-PFHxA %(EPA 537.1)1120 08/10/21 02:02 1346450 08/07/21 1347026 13C2-PFOA– IS#1 %(EPA 537.1)1101 08/10/21 02:02 1346450 08/07/21 1347026 13C3-HFPO-DA %(EPA 537.1)1120 08/10/21 02:02 1346450 08/07/21 1347026 13C4-PFOS– IS#2 %(EPA 537.1)1102 08/10/21 02:02 1346450 08/07/21 1347026 d3-NMeFOSAA %(EPA 537.1)1105 08/10/21 02:02 1346450 08/07/21 1347026 d5-NEtFOSAA %(EPA 537.1)1108 08/10/21 02:02 1346450 HWY101 - 55 - 08052021 (202108060317)Sampled on 08/05/2021 1230 EPA 537.1 - EPA Method 537.1 08/07/21 1347026 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.013 08/10/21 02:11 1346450 08/07/21 1347026 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0038 08/10/21 02:11 1346450 08/07/21 1347026 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.029 08/10/21 02:11 1346450 08/07/21 1347026 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0073 08/10/21 02:11 1346450 08/07/21 1347026 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.017 08/10/21 02:11 1346450 08/07/21 1347026 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0039 08/10/21 02:11 1346450 08/07/21 1347026 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:11 1346450 08/07/21 1347026 13C2-PFDA %(EPA 537.1)1114 08/10/21 02:11 1346450 08/07/21 1347026 13C2-PFHxA %(EPA 537.1)1117 08/10/21 02:11 1346450 08/07/21 1347026 13C2-PFOA– IS#1 %(EPA 537.1)1103 08/10/21 02:11 1346450 08/07/21 1347026 13C3-HFPO-DA %(EPA 537.1)1118 08/10/21 02:11 1346450 08/07/21 1347026 13C4-PFOS– IS#2 %(EPA 537.1)1100 08/10/21 02:11 1346450 08/07/21 1347026 d3-NMeFOSAA %(EPA 537.1)1108 08/10/21 02:11 1346450 Data Report - Page 5 of 7 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 15 of 23 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/06/2021 1141 951013 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/07/21 1347026 d5-NEtFOSAA %(EPA 537.1)1105 08/10/21 02:11 1346450 HWY101 - 45 - 08052021 (202108060318)Sampled on 08/05/2021 1430 EPA 537.1 - EPA Method 537.1 08/07/21 1347026 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:04 1346450 08/07/21 1347026 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:04 1346450 08/07/21 1347026 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:04 1346450 08/07/21 1347026 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:04 1346450 08/07/21 1347026 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:04 1346450 08/07/21 1347026 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:04 1346450 08/07/21 1347026 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.014 08/10/21 01:04 1346450 08/07/21 1347026 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:04 1346450 08/07/21 1347026 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:04 1346450 08/07/21 1347026 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0042 08/10/21 01:04 1346450 08/07/21 1347026 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.035 08/10/21 01:04 1346450 08/07/21 1347026 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0070 08/10/21 01:04 1346450 08/07/21 1347026 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 10.0021 08/10/21 01:04 1346450 08/07/21 1347026 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.028 08/10/21 01:04 1346450 08/07/21 1347026 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0051 08/10/21 01:04 1346450 08/07/21 1347026 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:04 1346450 08/07/21 1347026 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:04 1346450 08/07/21 1347026 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 01:04 1346450 08/07/21 1347026 13C2-PFDA %(EPA 537.1)1117 08/10/21 01:04 1346450 08/07/21 1347026 13C2-PFHxA %(EPA 537.1)1119 08/10/21 01:04 1346450 08/07/21 1347026 13C2-PFOA– IS#1 %(EPA 537.1)1103 08/10/21 01:04 1346450 08/07/21 1347026 13C3-HFPO-DA %(EPA 537.1)1119 08/10/21 01:04 1346450 08/07/21 1347026 13C4-PFOS– IS#2 %(EPA 537.1)1103 08/10/21 01:04 1346450 08/07/21 1347026 d3-NMeFOSAA %(EPA 537.1)1106 08/10/21 01:04 1346450 08/07/21 1347026 d5-NEtFOSAA %(EPA 537.1)1108 08/10/21 01:04 1346450 HWY101 - 35 - 08052021 (202108060319)Sampled on 08/05/2021 1535 EPA 537.1 - EPA Method 537.1 08/07/21 1347026 11-chloroeicosafluoro-3-oxaundecane-s ulfonic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:21 1346450 Data Report - Page 6 of 7 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 16 of 23 pages Laboratory Data BESST Inc. Miles Koehler 50 Tiburon Street Suite 7 San Rafael, CA 94901 Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) Samples Received on: 08/06/2021 1141 951013 PFAS PFAS Report: Project: Group: Prepped Analyzed Analytical Batch Method Analyte Result Units MRL DilutionPrep Batch 08/07/21 1347026 4,8-dioxa-3H-perfluorononanoic acid (ADONA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:21 1346450 08/07/21 1347026 9-chlorohexadecafluoro-3-oxanone-sulf onic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:21 1346450 08/07/21 1347026 Hexafluoropropylene oxide dimer acid (HFPO-DA) ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:21 1346450 08/07/21 1347026 N-ethyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:21 1346450 08/07/21 1347026 N-methyl Perfluorooctanesulfonamidoacetic acid ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:21 1346450 08/07/21 1347026 Perfluorobutanesulfonic acid (PFBS)ug/L(EPA 537.1)0.0020 10.013 08/10/21 02:21 1346450 08/07/21 1347026 Perfluorodecanoic acid (PFDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:21 1346450 08/07/21 1347026 Perfluorododecanoic acid (PFDoA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:21 1346450 08/07/21 1347026 Perfluoroheptanoic acid (PFHpA)ug/L(EPA 537.1)0.0020 10.0041 08/10/21 02:21 1346450 08/07/21 1347026 Perfluorohexanesulfonic acid (PFHxS)ug/L(EPA 537.1)0.0020 10.034 08/10/21 02:21 1346450 08/07/21 1347026 Perfluorohexanoic acid (PFHxA)ug/L(EPA 537.1)0.0020 10.0071 08/10/21 02:21 1346450 08/07/21 1347026 Perfluorononanoic acid (PFNA)ug/L(EPA 537.1)0.0020 10.0024 08/10/21 02:21 1346450 08/07/21 1347026 Perfluorooctanesulfonic acid (PFOS)ug/L(EPA 537.1)0.0020 10.032 08/10/21 02:21 1346450 08/07/21 1347026 Perfluorooctanoic acid (PFOA)ug/L(EPA 537.1)0.0020 10.0051 08/10/21 02:21 1346450 08/07/21 1347026 Perfluorotetradecanoic acid (PFTA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:21 1346450 08/07/21 1347026 Perfluorotridecanoic acid (PFTrDA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:21 1346450 08/07/21 1347026 Perfluoroundecanoic acid (PFUnA)ug/L(EPA 537.1)0.0020 1ND 08/10/21 02:21 1346450 08/07/21 1347026 13C2-PFDA %(EPA 537.1)1117 08/10/21 02:21 1346450 08/07/21 1347026 13C2-PFHxA %(EPA 537.1)1118 08/10/21 02:21 1346450 08/07/21 1347026 13C2-PFOA– IS#1 %(EPA 537.1)1103 08/10/21 02:21 1346450 08/07/21 1347026 13C3-HFPO-DA %(EPA 537.1)1118 08/10/21 02:21 1346450 08/07/21 1347026 13C4-PFOS– IS#2 %(EPA 537.1)1100 08/10/21 02:21 1346450 08/07/21 1347026 d3-NMeFOSAA %(EPA 537.1)1107 08/10/21 02:21 1346450 08/07/21 1347026 d5-NEtFOSAA %(EPA 537.1)1106 08/10/21 02:21 1346450 Data Report - Page 7 of 7 Rounding on totals after summation. (c) - indicates calculated results. Analysis is a calculated result. Reported results are not rounded until the final step before reporting. Therefore methods that use a test result with further calculation may have slight differences in final result than the component analyses. Page 17 of 23 pages Laboratory QC Summary BESST Inc. Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 951013 PFAS PFAS Report: Project: Group: EPA Method 537.1 Analysis Date: 08/10/2021Prep Batch: 1346450 Analytical Batch: 1347026 HWY101 - 130 - 08042021202108060312 Analyzed by: KAM HWY101 - 120 - 08042021202108060313 Analyzed by: KAM HWY101 - 75 - 08042021202108060314 Analyzed by: KAM HWY101 - 120 - Dup - 08052021202108060315 Analyzed by: KAM HWY101 - 65 - 08052021202108060316 Analyzed by: KAM HWY101 - 55 - 08052021202108060317 Analyzed by: KAM HWY101 - 45 - 08052021202108060318 Analyzed by: KAM HWY101 - 35 - 08052021202108060319 Analyzed by: KAM QC Summary - Page 1 of 1 Page 18 of 23 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 951013 PFAS PFAS Report: Project: Group: EPA Method 537.1 by EPA 537.1 Analysis Date: 08/10/2021Prep Batch: 1346450 Analytical Batch: 1347026 DUP_202108060318 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid ND ug/L (0-30)ND LCS1 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0229 ug/L 97 (70-130) LCS2 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.024 0.0227 ug/L 96 (70-130)0.8830 MBLK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid <0.000667 ug/L MRL_CHK 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.0019 0.00199 ug/L 106 (50-150) MS_202108060314 11-chloroeicosafluoro-3-oxaundecane-sulfonic acid 0.0019 0.00197 ug/L 105 (50-150)ND DUP_202108060318 13C2-PFDA (S)115 %115 (70-130) LCS1 13C2-PFDA (S)100 116 %116 (70-130) LCS2 13C2-PFDA (S)100 109 %109 (70-130) MBLK 13C2-PFDA (S)109 %109 (70-130) MRL_CHK 13C2-PFDA (S)100 109 %109 (70-130) MS_202108060314 13C2-PFDA (S)100 116 %116 (70-130) DUP_202108060318 13C2-PFHxA (S)120 %120 (70-130) LCS1 13C2-PFHxA (S)100 120 %120 (70-130) LCS2 13C2-PFHxA (S)100 120 %120 (70-130) MBLK 13C2-PFHxA (S)113 %113 (70-130) MRL_CHK 13C2-PFHxA (S)100 113 %113 (70-130) MS_202108060314 13C2-PFHxA (S)100 119 %119 (70-130) DUP_202108060318 13C2-PFOA– IS#1 (I)102 %103 (50-150) LCS1 13C2-PFOA– IS#1 (I)100 102 %102 (50-150) LCS2 13C2-PFOA– IS#1 (I)100 102 %102 (50-150) MBLK 13C2-PFOA– IS#1 (I)106 %106 (50-150) MRL_CHK 13C2-PFOA– IS#1 (I)100 109 %109 (50-150) MS_202108060314 13C2-PFOA– IS#1 (I)100 105 %105 (50-150) DUP_202108060318 13C3-HFPO-DA (S)118 %118 (70-130) LCS1 13C3-HFPO-DA (S)100 118 %118 (70-130) LCS2 13C3-HFPO-DA (S)100 118 %118 (70-130) MBLK 13C3-HFPO-DA (S)111 %111 (70-130) MRL_CHK 13C3-HFPO-DA (S)100 110 %110 (70-130) MS_202108060314 13C3-HFPO-DA (S)100 119 %119 (70-130) DUP_202108060318 13C4-PFOS– IS#2 (I)105 %105 (50-150) LCS1 13C4-PFOS– IS#2 (I)100 99.5 %100 (50-150) LCS2 13C4-PFOS– IS#2 (I)100 97.7 %98 (50-150) MBLK 13C4-PFOS– IS#2 (I)103 %103 (50-150) MRL_CHK 13C4-PFOS– IS#2 (I)100 102 %102 (50-150) QC Report - Page 1 of 5 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 19 of 23 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 951013 PFAS PFAS Report: Project: Group: MS_202108060314 13C4-PFOS– IS#2 (I)100 102 %102 (50-150) DUP_202108060318 4,8-dioxa-3H-perfluorononanoic acid (ADONA)ND ug/L (0-30)ND LCS1 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0253 ug/L 107 (70-130) LCS2 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.024 0.0244 ug/L 103 (70-130)3.630 MBLK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)<0.000667 ug/L MRL_CHK 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00207 ug/L 110 (50-150) MS_202108060314 4,8-dioxa-3H-perfluorononanoic acid (ADONA)0.0019 0.00220 ug/L 114 (50-150)ND DUP_202108060318 9-chlorohexadecafluoro-3-oxanone-sulfonic acid ND ug/L (0-30)ND LCS1 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0226 ug/L 97 (70-130) LCS2 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.023 0.0226 ug/L 97 (70-130)0.030 MBLK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid <0.000667 ug/L MRL_CHK 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00199 ug/L 107 (50-150) MS_202108060314 9-chlorohexadecafluoro-3-oxanone-sulfonic acid 0.0019 0.00195 ug/L 105 (50-150)ND DUP_202108060318 d3-NMeFOSAA (I)105 %105 (50-150) LCS1 d3-NMeFOSAA (I)100 104 %104 (50-150) LCS2 d3-NMeFOSAA (I)100 105 %105 (50-150) MBLK d3-NMeFOSAA (I)102 %102 (50-150) MRL_CHK d3-NMeFOSAA (I)100 107 %107 (50-150) MS_202108060314 d3-NMeFOSAA (I)100 107 %107 (50-150) DUP_202108060318 d5-NEtFOSAA (S)107 %107 (70-130) LCS1 d5-NEtFOSAA (S)100 102 %102 (70-130) LCS2 d5-NEtFOSAA (S)100 98.6 %99 (70-130) MBLK d5-NEtFOSAA (S)104 %104 (70-130) MRL_CHK d5-NEtFOSAA (S)100 102 %102 (70-130) MS_202108060314 d5-NEtFOSAA (S)100 109 %109 (70-130) DUP_202108060318 Hexafluoropropylene oxide dimer acid (HFPO-DA)ND ug/L (0-30)ND LCS1 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0257 ug/L 103 (70-130) LCS2 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.025 0.0257 ug/L 103 (70-130)0.030 MBLK Hexafluoropropylene oxide dimer acid (HFPO-DA)<0.000667 ug/L MRL_CHK Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00217 ug/L 109 (50-150) MS_202108060314 Hexafluoropropylene oxide dimer acid (HFPO-DA)0.002 0.00213 ug/L 107 (50-150)ND DUP_202108060318 N-ethyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND LCS1 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0224 ug/L 90 (70-130) LCS2 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0233 ug/L 93 (70-130)3.930 MBLK N-ethyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00208 ug/L 104 (50-150) MS_202108060314 N-ethyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00212 ug/L 106 (50-150)ND DUP_202108060318 N-methyl Perfluorooctanesulfonamidoacetic acid ND ug/L (0-30)ND QC Report - Page 2 of 5 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 20 of 23 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 951013 PFAS PFAS Report: Project: Group: LCS1 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0230 ug/L 92 (70-130) LCS2 N-methyl Perfluorooctanesulfonamidoacetic acid 0.025 0.0236 ug/L 94 (70-130)2.630 MBLK N-methyl Perfluorooctanesulfonamidoacetic acid <0.000667 ug/L MRL_CHK N-methyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00212 ug/L 106 (50-150) MS_202108060314 N-methyl Perfluorooctanesulfonamidoacetic acid 0.002 0.00214 ug/L 107 (50-150)ND DUP_202108060318 Perfluorobutanesulfonic acid (PFBS)0.0132 ug/L (0-30)2.50.014 30 LCS1 Perfluorobutanesulfonic acid (PFBS)0.022 0.0234 ug/L 106 (70-130) LCS2 Perfluorobutanesulfonic acid (PFBS)0.022 0.0231 ug/L 105 (70-130)1.330 MBLK Perfluorobutanesulfonic acid (PFBS)<0.000667 ug/L MRL_CHK Perfluorobutanesulfonic acid (PFBS)0.0018 0.00202 ug/L 114 (50-150) MS_202108060314 Perfluorobutanesulfonic acid (PFBS)0.0018 0.0152 ug/L 103 (50-150)0.013 DUP_202108060318 Perfluorodecanoic acid (PFDA)ND ug/L (0-30)ND LCS1 Perfluorodecanoic acid (PFDA)0.025 0.0252 ug/L 101 (70-130) LCS2 Perfluorodecanoic acid (PFDA)0.025 0.0244 ug/L 98 (70-130)3.630 MBLK Perfluorodecanoic acid (PFDA)<0.000667 ug/L MRL_CHK Perfluorodecanoic acid (PFDA)0.002 0.00208 ug/L 104 (50-150) MS_202108060314 Perfluorodecanoic acid (PFDA)0.002 0.00219 ug/L 108 (50-150)ND DUP_202108060318 Perfluorododecanoic acid (PFDoA)ND ug/L (0-30)ND LCS1 Perfluorododecanoic acid (PFDoA)0.025 0.0236 ug/L 94 (70-130) LCS2 Perfluorododecanoic acid (PFDoA)0.025 0.0240 ug/L 96 (70-130)1.730 MBLK Perfluorododecanoic acid (PFDoA)<0.000667 ug/L MRL_CHK Perfluorododecanoic acid (PFDoA)0.002 0.00206 ug/L 103 (50-150) MS_202108060314 Perfluorododecanoic acid (PFDoA)0.002 0.00212 ug/L 106 (50-150)ND DUP_202108060318 Perfluoroheptanoic acid (PFHpA)0.00391 ug/L (0-30)0.0042 LCS1 Perfluoroheptanoic acid (PFHpA)0.025 0.0262 ug/L 105 (70-130) LCS2 Perfluoroheptanoic acid (PFHpA)0.025 0.0264 ug/L 106 (70-130)0.7630 MBLK Perfluoroheptanoic acid (PFHpA)<0.000667 ug/L MRL_CHK Perfluoroheptanoic acid (PFHpA)0.002 0.00218 ug/L 109 (50-150) MS_202108060314 Perfluoroheptanoic acid (PFHpA)0.002 0.00617 ug/L 113 (50-150)0.0039 DUP_202108060318 Perfluorohexanesulfonic acid (PFHxS)0.0323 ug/L (0-30)8.10.035 30 LCS1 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0241 ug/L 106 (70-130) LCS2 Perfluorohexanesulfonic acid (PFHxS)0.023 0.0242 ug/L 106 (70-130)0.4130 MBLK Perfluorohexanesulfonic acid (PFHxS)<0.000667 ug/L MRL_CHK Perfluorohexanesulfonic acid (PFHxS)0.0018 0.00217 ug/L 119 (50-150) MS_202108060314 Perfluorohexanesulfonic acid (PFHxS)0.0018 0.0324 ug/L 110 (50-150)0.030 DUP_202108060318 Perfluorohexanoic acid (PFHxA)0.00701 ug/L (0-30)0.730.0070 30 LCS1 Perfluorohexanoic acid (PFHxA)0.025 0.0270 ug/L 108 (70-130) LCS2 Perfluorohexanoic acid (PFHxA)0.025 0.0255 ug/L 102 (70-130)5.730 QC Report - Page 3 of 5 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 21 of 23 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 951013 PFAS PFAS Report: Project: Group: MBLK Perfluorohexanoic acid (PFHxA)<0.000667 ug/L MRL_CHK Perfluorohexanoic acid (PFHxA)0.002 0.00226 ug/L 113 (50-150) MS_202108060314 Perfluorohexanoic acid (PFHxA)0.002 0.00968 ug/L 115 (50-150)0.0074 DUP_202108060318 Perfluorononanoic acid (PFNA)ND ug/L (0-30)0.0021 LCS1 Perfluorononanoic acid (PFNA)0.025 0.0266 ug/L 106 (70-130) LCS2 Perfluorononanoic acid (PFNA)0.025 0.0260 ug/L 104 (70-130)2.330 MBLK Perfluorononanoic acid (PFNA)<0.000667 ug/L MRL_CHK Perfluorononanoic acid (PFNA)0.002 0.00226 ug/L 113 (50-150) MS_202108060314 Perfluorononanoic acid (PFNA)0.002 0.00388 ug/L 100 (50-150)ND DUP_202108060318 Perfluorooctanesulfonic acid (PFOS)0.0251 ug/L (0-30)120.028 30 LCS1 Perfluorooctanesulfonic acid (PFOS)0.023 0.0229 ug/L 99 (70-130) LCS2 Perfluorooctanesulfonic acid (PFOS)0.023 0.0232 ug/L 100 (70-130)1.330 MBLK Perfluorooctanesulfonic acid (PFOS)<0.000667 ug/L MRL_CHK Perfluorooctanesulfonic acid (PFOS)0.0019 0.00202 ug/L 109 (50-150) MS_202108060314 Perfluorooctanesulfonic acid (PFOS)0.0019 0.0204 ug/L -183 (50-150)0.024 DUP_202108060318 Perfluorooctanoic acid (PFOA)0.00462 ug/L (0-30)0.0051 LCS1 Perfluorooctanoic acid (PFOA)0.025 0.0262 ug/L 105 (70-130) LCS2 Perfluorooctanoic acid (PFOA)0.025 0.0264 ug/L 106 (70-130)1.130 MBLK Perfluorooctanoic acid (PFOA)<0.000667 ug/L MRL_CHK Perfluorooctanoic acid (PFOA)0.002 0.00229 ug/L 115 (50-150) MS_202108060314 Perfluorooctanoic acid (PFOA)0.002 0.00640 ug/L 100 (50-150)0.0044 DUP_202108060318 Perfluorotetradecanoic acid (PFTA)ND ug/L (0-30)ND LCS1 Perfluorotetradecanoic acid (PFTA)0.025 0.0284 ug/L 114 (70-130) LCS2 Perfluorotetradecanoic acid (PFTA)0.025 0.0291 ug/L 116 (70-130)2.430 MBLK Perfluorotetradecanoic acid (PFTA)<0.000667 ug/L MRL_CHK Perfluorotetradecanoic acid (PFTA)0.002 0.00275 ug/L 138 (50-150) MS_202108060314 Perfluorotetradecanoic acid (PFTA)0.002 0.00282 ug/L 124 (50-150)ND DUP_202108060318 Perfluorotridecanoic acid (PFTrDA)ND ug/L (0-30)ND LCS1 Perfluorotridecanoic acid (PFTrDA)0.025 0.0252 ug/L 101 (70-130) LCS2 Perfluorotridecanoic acid (PFTrDA)0.025 0.0257 ug/L 103 (70-130)2.030 MBLK Perfluorotridecanoic acid (PFTrDA)<0.000667 ug/L MRL_CHK Perfluorotridecanoic acid (PFTrDA)0.002 0.00214 ug/L 107 (50-150) MS_202108060314 Perfluorotridecanoic acid (PFTrDA)0.002 0.00226 ug/L 113 (50-150)ND DUP_202108060318 Perfluoroundecanoic acid (PFUnA)ND ug/L (0-30)ND LCS1 Perfluoroundecanoic acid (PFUnA)0.025 0.0240 ug/L 96 (70-130) LCS2 Perfluoroundecanoic acid (PFUnA)0.025 0.0248 ug/L 99 (70-130)3.330 MBLK Perfluoroundecanoic acid (PFUnA)<0.000667 ug/L MRL_CHK Perfluoroundecanoic acid (PFUnA)0.002 0.00208 ug/L 104 (50-150) QC Report - Page 4 of 5 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 22 of 23 pages Laboratory QC BESST Inc. QC Type Analyte Spiked Limits (%)Recovered Units Yield(%)Native RPD Limit(%)RPD% Tel: (626) 386-1100 Fax: (866) 988-3757 1 800 566 LABS (1 800 566 5227) 951013 PFAS PFAS Report: Project: Group: MS_202108060314 Perfluoroundecanoic acid (PFUnA)0.002 0.00221 ug/L 111 (50-150)ND QC Report - Page 5 of 5 Spike recovery is already corrected for native results. Spikes which exceed Limits and Method Blanks with positive results are highlighted by Underlining. Criteria for MS and Dup are advisory only, batch control is based on LCS. Criteria for duplicates are advisory only, unless otherwise specified in the method. RPD not calculated for LCS2 when different a concentration than LCS1 is used. RPD not calculated for Duplicates when the result is not five times the MRL (Minimum Reporting Level). (S) - Indicates surrogate compound. (I) - Indicates internal standard compound. Page 23 of 23 pages Thank you for using BSK Associates for your analytical testing needs. In the following pages, you will find the test results for the samples submitted to our laboratory on 8/7/2021. The results have been approved for release by our Laboratory Director as indicated by the authorizing signature below. The samples were analyzed for the test(s) indicated on the Chain of Custody (see attached) and the results relate only to the samples analyzed. BSK certifies that the testing was performed in accordance with the quality system requirements specified in the 2016 TNI Standard. Any deviations from this standard or from the method requirements for each test procedure performed will be annotated alongside the analytical result or noted in the Case Narrative. Unless otherwise noted, the sample results are reported on an as received basis. This certificate of analysis shall not be reproduced except in full, without written approval of the laboratory. If additional clarification of any information is required, please contact your Project Manager, Christian Montiel , at 559-497-2888. Thank you again for using BSK Associates. We value your business and appreciate your loyalty. Sincerely, BESST, Inc. San Rafael, CA 94901 50 Tiburon Street, Suite 7 Dear Miles Koehler, Miles Koehler 8/20/2021 AEH0828 RE: Report for AEH0828 General Christian Montiel, Project Coordinator II Accredited in Accordance with NELAP ORELAP #4021 BSK Associates Laboratory Fresno 1414 Stanislaus St Fresno, CA 93706 559-497-2888 (Main) 559-485-6935 (FAX) Invoice: AE18676 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 1 of 19 AEH0828 General Case Narrative Project and Report Details Client:BESST, Inc. Report To: Project #: Received:8/07/2021 - 10:00 Miles Koehler Invoice To: Invoice Attn: BESST, Inc. Leslie Emmens Project PO#:- Report Due:8/23/2021 Invoice Details SLO Prop 1 Sample Receipt Conditions Default CoolerCooler: Temperature on Receipt ”C: 5.9 Containers Intact Received On Wet Ice Packing Material - Foam Sample(s) were received in temperature range. Initial receipt at BSK-FAL Data Qualifiers The following qualifiers have been applied to one or more analytical results: ***None applied*** Recipient(s) Report Format Report Distribution CC: Miles Koehler FINAL.RPT Noah Heller FINAL.RPT www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 2 of 19 Certificate of Analysis AEH0828 General SLO Prop 1 Sample Description: HWY101-130-08042021 Sample ID: AEH0828-01 08/04/2021 - 13:02 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LBenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LChlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LDichloromethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LEthylbenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lo-Xylene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LStyrene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/17/21 08/18/21AEH10393.9 1 0.50 ug/LToluene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/17/21 08/18/21AEH1039ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/17/21 08/18/21AEH1039ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %88 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %93 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 3 of 19 Certificate of Analysis AEH0828 General SLO Prop 1 Sample Description: HWY101-120-08042021 Sample ID: AEH0828-02 08/04/2021 - 15:09 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LBenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LChlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LDichloromethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LEthylbenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lo-Xylene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LStyrene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/17/21 08/18/21AEH10391.9 1 0.50 ug/LToluene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/17/21 08/18/21AEH1039ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/17/21 08/18/21AEH1039ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %88 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %93 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 4 of 19 Certificate of Analysis AEH0828 General SLO Prop 1 Sample Description: HWY101-75-08042021 Sample ID: AEH0828-03 08/04/2021 - 15:55 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LBenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LChlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LDichloromethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LEthylbenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lo-Xylene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LStyrene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/17/21 08/18/21AEH10391.9 1 0.50 ug/LToluene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/17/21 08/18/21AEH1039ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/17/21 08/18/21AEH1039ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %92 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %94 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 5 of 19 Certificate of Analysis AEH0828 General SLO Prop 1 Sample Description: HWY101-120-DUP-08052021 Sample ID: AEH0828-04 08/05/2021 - 09:02 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LBenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LChlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LDichloromethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LEthylbenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lo-Xylene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LStyrene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/18/21 08/18/21AEH12073.0 1 0.50 ug/LToluene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/18/21 08/18/21AEH1207ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/18/21 08/18/21AEH1207ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %86 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %91 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 6 of 19 Certificate of Analysis AEH0828 General SLO Prop 1 Sample Description: HWY101-65-08052021 Sample ID: AEH0828-05 08/05/2021 - 10:20 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LBenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LChlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LDichloromethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LEthylbenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lo-Xylene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LStyrene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/18/21 08/18/21AEH12071.2 1 0.50 ug/LToluene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/18/21 08/18/21AEH1207ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/18/21 08/18/21AEH1207ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %85 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %90 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 7 of 19 Certificate of Analysis AEH0828 General SLO Prop 1 Sample Description: HWY101-55-08052021 Sample ID: AEH0828-06 08/04/2021 - 12:30 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LBenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LChlorobenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LDichloromethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LEthylbenzene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Lo-Xylene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LStyrene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/17/21 08/18/21AEH10391.1 1 0.50 ug/LToluene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/17/21 08/18/21AEH1039ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/17/21 08/18/21AEH1039ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/17/21 08/18/21AEH1039ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %91 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %96 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 8 of 19 Certificate of Analysis AEH0828 General SLO Prop 1 Sample Description: HWY101-45-08052021 Sample ID: AEH0828-07 08/05/2021 - 14:30 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LBenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LChlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LDichloromethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LEthylbenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lo-Xylene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LStyrene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/18/21 08/18/21AEH12073.3 1 0.50 ug/LToluene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/18/21 08/18/21AEH1207ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/18/21 08/18/21AEH1207ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %84 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %78 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 9 of 19 Certificate of Analysis AEH0828 General SLO Prop 1 Sample Description: HWY101-35-08052021 Sample ID: AEH0828-08 08/05/2021 - 15:35 Sampled By: Grab RPE Drinking Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LBenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LChlorobenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LDichloromethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LEthylbenzene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Lo-Xylene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LStyrene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 08/18/21 08/18/21AEH12072.7 1 0.50 ug/LToluene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 08/18/21 08/18/21AEH1207ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LVinyl Chloride EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 08/18/21 08/18/21AEH1207ND1 0.50 ug/LTotal Xylenes EPA 524.2 08/18/21 08/18/21AEH1207ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %87 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %94 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 10 of 19 AEH0828 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1039 Prepared: 8/17/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank (AEH1039-BLK1) 1,1,1-Trichloroethane ND ug/L0.50 08/17/21 1,1,2,2-Tetrachloroethane ND ug/L0.50 08/17/21 1,1,2-Trichloro-1,2,2-trifluoroethane ND ug/L10 08/17/21 1,1,2-Trichloroethane ND ug/L0.50 08/17/21 1,1-Dichloroethane ND ug/L0.50 08/17/21 1,1-Dichloroethene ND ug/L0.50 08/17/21 1,2,4-Trichlorobenzene ND ug/L0.50 08/17/21 1,2-Dichlorobenzene ND ug/L0.50 08/17/21 1,2-Dichloroethane ND ug/L0.50 08/17/21 1,2-Dichloropropane ND ug/L0.50 08/17/21 1,4-Dichlorobenzene ND ug/L0.50 08/17/21 Benzene ND ug/L0.50 08/17/21 Carbon Tetrachloride ND ug/L0.50 08/17/21 Chlorobenzene ND ug/L0.50 08/17/21 cis-1,2-Dichloroethene ND ug/L0.50 08/17/21 cis-1,3-Dichloropropene ND ug/L0.50 08/17/21 Dichloromethane ND ug/L0.50 08/17/21 Ethylbenzene ND ug/L0.50 08/17/21 m,p-Xylenes ND ug/L0.50 08/17/21 Methyl-t-butyl ether ND ug/L0.50 08/17/21 o-Xylene ND ug/L0.50 08/17/21 Styrene ND ug/L0.50 08/17/21 Tetrachloroethene (PCE) ND ug/L0.50 08/17/21 Toluene ND ug/L0.50 08/17/21 trans-1,2-Dichloroethene ND ug/L0.50 08/17/21 trans-1,3-Dichloropropene ND ug/L0.50 08/17/21 Trichloroethene (TCE) ND ug/L0.50 08/17/21 Trichlorofluoromethane ND ug/L5.0 08/17/21 Vinyl Chloride ND ug/L0.50 08/17/21 Total 1,3-Dichloropropene ND ug/L0.50 08/17/21 Total Xylenes ND ug/L0.50 08/17/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 9246 50 08/17/21 70-130Surrogate: Bromofluorobenzene 9547 50 08/17/21 Blank Spike (AEH1039-BS1) 70-130991,1,1-Trichloroethane 109.9 ug/L0.50 ND 08/17/21 70-130961,1,2,2-Tetrachloroethane 109.6 ug/L0.50 ND 08/17/21 70-1301071,1,2-Trichloro-1,2,2-trifluoroethane 1011ug/L10 ND 08/17/21 70-130951,1,2-Trichloroethane 109.5 ug/L0.50 ND 08/17/21 70-130991,1-Dichloroethane 109.9 ug/L0.50 ND 08/17/21 70-1301011,1-Dichloroethene 1010ug/L0.50 ND 08/17/21 70-1301021,2,4-Trichlorobenzene 1010ug/L0.50 ND 08/17/21 70-130961,2-Dichlorobenzene 109.6 ug/L0.50 ND 08/17/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 11 of 19 AEH0828 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1039 Prepared: 8/17/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank Spike (AEH1039-BS1) 70-130961,2-Dichloroethane 109.6 ug/L0.50 ND 08/17/21 70-130971,2-Dichloropropane 109.7 ug/L0.50 ND 08/17/21 70-130971,4-Dichlorobenzene 109.7 ug/L0.50 ND 08/17/21 70-13098Benzene109.8 ug/L0.50 ND 08/17/21 70-130100Carbon Tetrachloride 1010ug/L0.50 ND 08/17/21 70-130100Chlorobenzene1010ug/L0.50 ND 08/17/21 70-13099cis-1,2-Dichloroethene 109.9 ug/L0.50 ND 08/17/21 70-13097cis-1,3-Dichloropropene 109.7 ug/L0.50 ND 08/17/21 70-130100Dichloromethane1010ug/L0.50 ND 08/17/21 70-13099Ethylbenzene109.9 ug/L0.50 ND 08/17/21 70-13098m,p-Xylenes 2020ug/L0.50 ND 08/17/21 70-13097Methyl-t-butyl ether 2019ug/L0.50 ND 08/17/21 70-13098o-Xylene 109.8 ug/L0.50 ND 08/17/21 70-13097Styrene109.7 ug/L0.50 ND 08/17/21 70-13097Tetrachloroethene (PCE)109.7 ug/L0.50 ND 08/17/21 70-13097Toluene109.7 ug/L0.50 ND 08/17/21 70-130100trans-1,2-Dichloroethene 1010ug/L0.50 ND 08/17/21 70-13096trans-1,3-Dichloropropene 109.6 ug/L0.50 ND 08/17/21 70-130100Trichloroethene (TCE)1010ug/L0.50 ND 08/17/21 70-130101Trichlorofluoromethane1010ug/L5.0 ND 08/17/21 70-130101Vinyl Chloride 1010ug/L0.50 ND 08/17/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 9849 50 08/17/21 70-130Surrogate: Bromofluorobenzene 9950 50 08/17/21 Blank Spike Dup (AEH1039-BSD1) 3070-13097 21,1,1-Trichloroethane 109.7 ug/L0.50 ND 08/17/21 3070-13089 71,1,2,2-Tetrachloroethane 108.9 ug/L0.50 ND 08/17/21 3070-130106 1 1,1,2-Trichloro-1,2,2-trifluoroethane 1011ug/L10 ND 08/17/21 3070-13094 11,1,2-Trichloroethane 109.4 ug/L0.50 ND 08/17/21 3070-13099 01,1-Dichloroethane 109.9 ug/L0.50 ND 08/17/21 3070-130100 11,1-Dichloroethene 1010ug/L0.50 ND 08/17/21 3070-130100 21,2,4-Trichlorobenzene 1010ug/L0.50 ND 08/17/21 3070-13094 21,2-Dichlorobenzene 109.4 ug/L0.50 ND 08/17/21 3070-13095 11,2-Dichloroethane 109.5 ug/L0.50 ND 08/17/21 3070-13096 11,2-Dichloropropane 109.6 ug/L0.50 ND 08/17/21 3070-13095 21,4-Dichlorobenzene 109.5 ug/L0.50 ND 08/17/21 3070-13097 1Benzene109.7 ug/L0.50 ND 08/17/21 3070-13097 3Carbon Tetrachloride 109.7 ug/L0.50 ND 08/17/21 3070-13097 3Chlorobenzene109.7 ug/L0.50 ND 08/17/21 3070-13099 0cis-1,2-Dichloroethene 109.9 ug/L0.50 ND 08/17/21 3070-13095 2cis-1,3-Dichloropropene 109.5 ug/L0.50 ND 08/17/21 3070-130101 1Dichloromethane1010ug/L0.50 ND 08/17/21 3070-13095 4Ethylbenzene109.5 ug/L0.50 ND 08/17/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 12 of 19 AEH0828 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1039 Prepared: 8/17/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank Spike Dup (AEH1039-BSD1) 3070-13095 3m,p-Xylenes 2019ug/L0.50 ND 08/17/21 3070-13096 1Methyl-t-butyl ether 2019ug/L0.50 ND 08/17/21 3070-13096 2o-Xylene 109.6 ug/L0.50 ND 08/17/21 3070-13096 1Styrene109.6 ug/L0.50 ND 08/17/21 3070-13092 5Tetrachloroethene (PCE)109.2 ug/L0.50 ND 08/17/21 3070-13092 5Toluene109.2 ug/L0.50 ND 08/17/21 3070-130100 0trans-1,2-Dichloroethene 1010ug/L0.50 ND 08/17/21 3070-13095 1trans-1,3-Dichloropropene 109.5 ug/L0.50 ND 08/17/21 3070-13097 2Trichloroethene (TCE)109.7 ug/L0.50 ND 08/17/21 3070-13098 3Trichlorofluoromethane109.8 ug/L5.0 ND 08/17/21 3070-13095 6Vinyl Chloride 109.5 ug/L0.50 ND 08/17/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 9849 50 08/17/21 70-130Surrogate: Bromofluorobenzene 9849 50 08/17/21 Batch: AEH1207 Prepared: 8/18/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank (AEH1207-BLK1) 1,1,1-Trichloroethane ND ug/L0.50 08/18/21 1,1,2,2-Tetrachloroethane ND ug/L0.50 08/18/21 1,1,2-Trichloro-1,2,2-trifluoroethane ND ug/L10 08/18/21 1,1,2-Trichloroethane ND ug/L0.50 08/18/21 1,1-Dichloroethane ND ug/L0.50 08/18/21 1,1-Dichloroethene ND ug/L0.50 08/18/21 1,2,4-Trichlorobenzene ND ug/L0.50 08/18/21 1,2-Dichlorobenzene ND ug/L0.50 08/18/21 1,2-Dichloroethane ND ug/L0.50 08/18/21 1,2-Dichloropropane ND ug/L0.50 08/18/21 1,4-Dichlorobenzene ND ug/L0.50 08/18/21 Benzene ND ug/L0.50 08/18/21 Carbon Tetrachloride ND ug/L0.50 08/18/21 Chlorobenzene ND ug/L0.50 08/18/21 cis-1,2-Dichloroethene ND ug/L0.50 08/18/21 cis-1,3-Dichloropropene ND ug/L0.50 08/18/21 Dichloromethane ND ug/L0.50 08/18/21 Ethylbenzene ND ug/L0.50 08/18/21 m,p-Xylenes ND ug/L0.50 08/18/21 Methyl-t-butyl ether ND ug/L0.50 08/18/21 o-Xylene ND ug/L0.50 08/18/21 Styrene ND ug/L0.50 08/18/21 Tetrachloroethene (PCE) ND ug/L0.50 08/18/21 Toluene ND ug/L0.50 08/18/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 13 of 19 AEH0828 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1207 Prepared: 8/18/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank (AEH1207-BLK1) trans-1,2-Dichloroethene ND ug/L0.50 08/18/21 trans-1,3-Dichloropropene ND ug/L0.50 08/18/21 Trichloroethene (TCE) ND ug/L0.50 08/18/21 Trichlorofluoromethane ND ug/L5.0 08/18/21 Vinyl Chloride ND ug/L0.50 08/18/21 Total 1,3-Dichloropropene ND ug/L0.50 08/18/21 Total Xylenes ND ug/L0.50 08/18/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 8743 50 08/18/21 70-130Surrogate: Bromofluorobenzene 9246 50 08/18/21 Blank Spike (AEH1207-BS1) 70-130981,1,1-Trichloroethane 109.8 ug/L0.50 ND 08/18/21 70-130991,1,2,2-Tetrachloroethane 109.9 ug/L0.50 ND 08/18/21 70-1301021,1,2-Trichloro-1,2,2-trifluoroethane 1010ug/L10 ND 08/18/21 70-130961,1,2-Trichloroethane 109.6 ug/L0.50 ND 08/18/21 70-130991,1-Dichloroethane 109.9 ug/L0.50 ND 08/18/21 70-130981,1-Dichloroethene 109.8 ug/L0.50 ND 08/18/21 70-130951,2,4-Trichlorobenzene 109.5 ug/L0.50 ND 08/18/21 70-130931,2-Dichlorobenzene 109.3 ug/L0.50 ND 08/18/21 70-130981,2-Dichloroethane 109.8 ug/L0.50 ND 08/18/21 70-130961,2-Dichloropropane 109.6 ug/L0.50 ND 08/18/21 70-130931,4-Dichlorobenzene 109.3 ug/L0.50 ND 08/18/21 70-13097Benzene109.7 ug/L0.50 ND 08/18/21 70-13097Carbon Tetrachloride 109.7 ug/L0.50 ND 08/18/21 70-13094Chlorobenzene109.4 ug/L0.50 ND 08/18/21 70-13099cis-1,2-Dichloroethene 109.9 ug/L0.50 ND 08/18/21 70-13096cis-1,3-Dichloropropene 109.6 ug/L0.50 ND 08/18/21 70-130101Dichloromethane1010ug/L0.50 ND 08/18/21 70-13096Ethylbenzene109.6 ug/L0.50 ND 08/18/21 70-13096m,p-Xylenes 2019ug/L0.50 ND 08/18/21 70-13097Methyl-t-butyl ether 2019ug/L0.50 ND 08/18/21 70-13096o-Xylene 109.6 ug/L0.50 ND 08/18/21 70-13095Styrene109.5 ug/L0.50 ND 08/18/21 70-13091Tetrachloroethene (PCE)109.1 ug/L0.50 ND 08/18/21 70-13094Toluene109.4 ug/L0.50 ND 08/18/21 70-13099trans-1,2-Dichloroethene 109.9 ug/L0.50 ND 08/18/21 70-13095trans-1,3-Dichloropropene 109.5 ug/L0.50 ND 08/18/21 70-13096Trichloroethene (TCE)109.6 ug/L0.50 ND 08/18/21 70-13098Trichlorofluoromethane109.8 ug/L5.0 ND 08/18/21 70-13099Vinyl Chloride 109.9 ug/L0.50 ND 08/18/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 9045 50 08/18/21 70-130Surrogate: Bromofluorobenzene 9447 50 08/18/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 14 of 19 AEH0828 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEH1207 Prepared: 8/18/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank Spike Dup (AEH1207-BSD1) 3070-13096 21,1,1-Trichloroethane 109.6 ug/L0.50 ND 08/18/21 3070-13098 11,1,2,2-Tetrachloroethane 109.8 ug/L0.50 ND 08/18/21 3070-13097 4 1,1,2-Trichloro-1,2,2-trifluoroethane 109.7 ug/L10 ND 08/18/21 3070-13096 01,1,2-Trichloroethane 109.6 ug/L0.50 ND 08/18/21 3070-13096 21,1-Dichloroethane 109.6 ug/L0.50 ND 08/18/21 3070-13095 21,1-Dichloroethene 109.5 ug/L0.50 ND 08/18/21 3070-13093 21,2,4-Trichlorobenzene 109.3 ug/L0.50 ND 08/18/21 3070-13092 21,2-Dichlorobenzene 109.2 ug/L0.50 ND 08/18/21 3070-13096 21,2-Dichloroethane 109.6 ug/L0.50 ND 08/18/21 3070-13095 11,2-Dichloropropane 109.5 ug/L0.50 ND 08/18/21 3070-13092 11,4-Dichlorobenzene 109.2 ug/L0.50 ND 08/18/21 3070-13095 1Benzene109.5 ug/L0.50 ND 08/18/21 3070-13095 1Carbon Tetrachloride 109.5 ug/L0.50 ND 08/18/21 3070-13093 1Chlorobenzene109.3 ug/L0.50 ND 08/18/21 3070-13097 1cis-1,2-Dichloroethene 109.7 ug/L0.50 ND 08/18/21 3070-13096 0cis-1,3-Dichloropropene 109.6 ug/L0.50 ND 08/18/21 3070-13097 5Dichloromethane109.7 ug/L0.50 ND 08/18/21 3070-13095 1Ethylbenzene109.5 ug/L0.50 ND 08/18/21 3070-13094 2m,p-Xylenes 2019ug/L0.50 ND 08/18/21 3070-13095 2Methyl-t-butyl ether 2019ug/L0.50 ND 08/18/21 3070-13095 1o-Xylene 109.5 ug/L0.50 ND 08/18/21 3070-13094 1Styrene109.4 ug/L0.50 ND 08/18/21 3070-13092 1Tetrachloroethene (PCE)109.2 ug/L0.50 ND 08/18/21 3070-13094 0Toluene109.4 ug/L0.50 ND 08/18/21 3070-13096 2trans-1,2-Dichloroethene 109.6 ug/L0.50 ND 08/18/21 3070-13094 1trans-1,3-Dichloropropene 109.4 ug/L0.50 ND 08/18/21 3070-13095 1Trichloroethene (TCE)109.5 ug/L0.50 ND 08/18/21 3070-13096 2Trichlorofluoromethane109.6 ug/L5.0 ND 08/18/21 3070-13097 2Vinyl Chloride 109.7 ug/L0.50 ND 08/18/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 8844 50 08/18/21 70-130Surrogate: Bromofluorobenzene 9246 50 08/18/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 15 of 19 AEH0828 General Certificate of Analysis Notes: • The Chain of Custody document and Sample Integrity Sheet are part of the analytical report. • Any remaining sample(s) for testing will be disposed of according to BSK’s sample retention policy unless other arrangements are made in advance. • All positive results for EPA Methods 504.1 and 524.2 require the analysis of a Field Reagent Blank (FRB) to confirm that the results are not a contamination error from field sampling steps. If Field Reagent Blanks were not submitted with the samples, this method requirement has not been performed. • Samples collected by BSK Analytical Laboratories were collected in accordance with the BSK Sampling and Collection Standard Operating Procedures. • J-value is equivalent to DNQ (Detected, not quantified) which is a trace value. A trace value is an analyte detected between the MDL and the laboratory reporting limit. This result is of an unknown data quality and is only qualitative (estimated). Baseline noise, calibration curve extrapolation below the lowest calibrator, method blank detections, and integration artifacts can all produce apparent DNQ values, which contribute to the un-reliability of these values. • (1) - Residual chlorine and pH analysis have a 15 minute holding time for both drinking and waste water samples as defined by the EPA and 40 CFR 136. Waste water and ground water (monitoring well) samples must be field filtered to meet the 15 minute holding time for dissolved metals. • Field tests are outside the scope of laboratory accreditation and there is no certification available for field testing. • Summations of analytes (i.e. Total Trihalomethanes) may appear to add individual amounts incorrectly, due to rounding of analyte values occurring before or after the total value is calculated, as well as rounding of the total value. • RL Multiplier is the factor used to adjust the reporting limit (RL) due to variations in sample preparation procedures and dilutions required for matrix interferences. • Due to the subjective nature of the Threshold Odor Method, all characterizations of the detected odor are the opinion of the panel of analysts. The characterizations can be found in Standard Methods 2170B Figure 2170:1. • The MCLs provided in this report (if applicable) represent the primary MCLs for that analyte. • (2) - Formerly known as Bis(2-Chloroisopropyl) ether. Definitions mg/L: Milligrams/Liter (ppm) mg/Kg: Milligrams/Kilogram (ppm) g/L: Micrograms/Liter (ppb) g/Kg: Micrograms/Kilogram (ppb) %: Percent NR: Non-Reportable MDL: Method Detection Limit RL: Reporting Limit: DL x Dilution ND: None Detected below MRL/MDL pCi/L: PicoCuries per Liter RL Mult: RL Multiplier MCL: Maximum Contaminant Limit MDA95: Min. Detected Activity MPN: Most Probable Number CFU: Colony Forming Unit Absent: Less than 1 CFU/100mLs Present: 1 or more CFU/100mLs U: The analyte was not detected at or above the reported sample quantitation limit. BSK is not accredited under the NELAP program for the following parameters:**NA** Please see the individual Subcontract Lab’s report for applicable certifications. www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 16 of 19 AEH0828 General Certificate of Analysis Certifications: Please refer to our website for a copy of our Accredited Fields of Testing under each certification. Fresno 1180State of California - ELAP 4021State of Hawaii 9254479Los Angeles CSD 4021-018NELAP certified CA000792022-1State of Nevada 4021-018State of Oregon - NELAP CA00079EPA - UCMR4 C997-21State of Washington Sacramento 2435State of California - ELAP San Bernardino 2993State of California - ELAP 9254478Los Angeles CSD 4119-005NELAP certified 4119-005State of Oregon - NELAP Vancouver WA100008-014NELAP certified WA100008-014State of Oregon - NELAP C824-20State of Washington www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEH0828 FINAL 08202021 1439 Page 17 of 19 Page 18 of 19 Page 19 of 19 Thank you for using BSK Associates for your analytical testing needs. In the following pages, you will find the test results for the samples submitted to our laboratory on 9/3/2021. The results have been approved for release by our Laboratory Director as indicated by the authorizing signature below. The samples were analyzed for the test(s) indicated on the Chain of Custody (see attached) and the results relate only to the samples analyzed. BSK certifies that the testing was performed in accordance with the quality system requirements specified in the 2016 TNI Standard. Any deviations from this standard or from the method requirements for each test procedure performed will be annotated alongside the analytical result or noted in the Case Narrative. Unless otherwise noted, the sample results are reported on an as received basis. This certificate of analysis shall not be reproduced except in full, without written approval of the laboratory. If additional clarification of any information is required, please contact your Project Manager, PM Staff , at 559-497-2888. Thank you again for using BSK Associates. We value your business and appreciate your loyalty. Sincerely, BESST, Inc. San Rafael, CA 94901 50 Tiburon Street, Suite 7 Dear Miles Koehler, Miles Koehler 9/20/2021 AEI0394 RE: Report for AEI0394 General Elaine M. Phillips, Project Coordinator II Accredited in Accordance with NELAP ORELAP #4021 BSK Associates Laboratory Fresno 1414 Stanislaus St Fresno, CA 93706 559-497-2888 (Main) 559-485-6935 (FAX) Invoice: AE21033 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 1 of 22 AEI0394 General Case Narrative Project and Report Details Client:BESST, Inc. Report To: Project #: Received:9/03/2021 - 15:40 Miles Koehler Invoice To: Invoice Attn: BESST, Inc. Leslie Emmens Project PO#:- Report Due:9/20/2021 Invoice Details SLO Sample Receipt Conditions Default CoolerCooler: Temperature on Receipt ”C: 4.0 Containers Intact COC/Labels Agree Received On Wet Ice Packing Material - Other Sample(s) were received in temperature range. Initial receipt at BSK-FAL New CoolerCooler: Temperature on Receipt ”C: 1.7 Containers Intact COC/Labels Agree Received On Wet Ice Packing Material - Other Sample(s) were received in temperature range. Initial receipt at BSK-FAL Data Qualifiers The following qualifiers have been applied to one or more analytical results: ***None applied*** Recipient(s) Report Format Report Distribution CC: Miles Koehler FINAL.RPT Noah Heller FINAL.RPT Robert Emmens FINAL.RPT www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 2 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Hwy101 - WH1 Sample ID: AEI0394-01 09/02/2021 - 15:40 Sampled By: Grab Miles Koehler Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/08/21 09/08/21AEI03526401 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI02256.4 1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %94 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %97 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 3 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Hwy101 - 125 Sample ID: AEI0394-02 09/02/2021 - 15:52 Sampled By: Grab Miles Koehler Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/08/21 09/08/21AEI03526401 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI02253.8 1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %113 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %114 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 4 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Hwy101 - 115 Sample ID: AEI0394-03 09/02/2021 - 16:07 Sampled By: Grab Miles Koehler Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/08/21 09/08/21AEI03526401 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI02255.1 1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI02251.7 1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %103 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %105 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 5 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Hwy101 - 115 Dup Sample ID: AEI0394-04 09/02/2021 - 16:15 Sampled By: Grab Miles Koehler Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/08/21 09/08/21AEI03526401 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI02254.7 1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %114 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %114 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 6 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Hwy101 - 95 Sample ID: AEI0394-05 09/02/2021 - 16:29 Sampled By: Grab Miles Koehler Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/08/21 09/08/21AEI03526301 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI02255.6 1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %120 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %119 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 7 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Hwy101 - 80 Sample ID: AEI0394-06 09/02/2021 - 16:47 Sampled By: Grab Miles Koehler Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/08/21 09/08/21AEI03526401 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI02253.2 1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %96 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %100 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 8 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Hwy101 - 70 Sample ID: AEI0394-07 09/02/2021 - 17:02 Sampled By: Grab Miles Koehler Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/08/21 09/08/21AEI03526701 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI02253.4 1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %117 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %116 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 9 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Hwy101 - 60 Sample ID: AEI0394-08 09/02/2021 - 17:13 Sampled By: Grab Miles Koehler Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/08/21 09/08/21AEI03526701 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI02253.5 1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %97 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %101 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 10 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Hwy101 - 50 Sample ID: AEI0394-09 09/02/2021 - 17:22 Sampled By: Grab Miles Koehler Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/08/21 09/08/21AEI03526701 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI02253.6 1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %117 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %116 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 11 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Hwy101 - WH2 Sample ID: AEI0394-10 09/02/2021 - 17:25 Sampled By: Grab Miles Koehler Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/08/21 09/08/21AEI03526701 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI02256.5 1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %114 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %113 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 12 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Hwy101 - EB Sample ID: AEI0394-11 09/02/2021 - 17:41 Sampled By: Grab Miles Koehler Ground Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno General Chemistry ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual 5.0 mg/LTotal Dissolved Solids SM 2540C 09/08/21 09/08/21AEI0352151 Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI02252.4 1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %101 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %99 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 13 of 22 Certificate of Analysis AEI0394 General SLO Sample Description: Trip Blank Raw 0721040 Sample ID: AEI0394-12 09/02/2021 - 00:00 Sampled By: Trip Blank BSK Water Sample Date - Time: Matrix: Sample Type: BSK Associates Laboratory Fresno Organics ResultAnalyte RL Prepared Analyzed RL MultUnitsMethod Batch Qual Volatile Organics (SDWA Regulated) by GC-MS 0.50 ug/L1,1,1-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2,2-Tetrachloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 10 ug/L 1,1,2-Trichloro-1,2,2-trifluoroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1,2-Trichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,1-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2,4-Trichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloroethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,2-Dichloropropane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/L1,4-Dichlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LBenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LCarbon Tetrachloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LChlorobenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lcis-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LDichloromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LEthylbenzene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lm,p-Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LMethyl-t-butyl ether EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Lo-Xylene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LStyrene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTetrachloroethene (PCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LToluene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,2-Dichloroethene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/Ltrans-1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTrichloroethene (TCE) EPA 524.2 09/03/21 09/04/21AEI0225ND1 5.0 ug/LTrichlorofluoromethane EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LVinyl Chloride EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal 1,3-Dichloropropene EPA 524.2 09/03/21 09/04/21AEI0225ND1 0.50 ug/LTotal Xylenes EPA 524.2 09/03/21 09/04/21AEI0225ND1 Surrogate: 1,2-Dichlorobenzene-d4 Acceptable range: 70-130 %120 %EPA 524.2 Surrogate: Bromofluorobenzene Acceptable range: 70-130 %116 %EPA 524.2 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 14 of 22 AEI0394 General General Chemistry Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEI0352 Prepared: 9/8/2021 Analyst: SYYPrep Method: Method Specific Preparation SM 2540C - Quality Control Blank (AEI0352-BLK1) Total Dissolved Solids ND mg/L5.0 09/08/21 Blank Spike (AEI0352-BS1) 70-130100Total Dissolved Solids 10001000mg/L 09/08/21 Duplicate (AEI0352-DUP1), Source: AEI0394-01 102Total Dissolved Solids 620 mg/L5.0 640 09/08/21 Duplicate (AEI0352-DUP2), Source: AEI0387-01 101Total Dissolved Solids 810 mg/L5.0 810 09/08/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 15 of 22 AEI0394 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEI0225 Prepared: 9/3/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank (AEI0225-BLK1) 1,1,1-Trichloroethane ND ug/L0.50 09/04/21 1,1,2,2-Tetrachloroethane ND ug/L0.50 09/04/21 1,1,2-Trichloro-1,2,2-trifluoroethane ND ug/L10 09/04/21 1,1,2-Trichloroethane ND ug/L0.50 09/04/21 1,1-Dichloroethane ND ug/L0.50 09/04/21 1,1-Dichloroethene ND ug/L0.50 09/04/21 1,2,4-Trichlorobenzene ND ug/L0.50 09/04/21 1,2-Dichlorobenzene ND ug/L0.50 09/04/21 1,2-Dichloroethane ND ug/L0.50 09/04/21 1,2-Dichloropropane ND ug/L0.50 09/04/21 1,4-Dichlorobenzene ND ug/L0.50 09/04/21 Benzene ND ug/L0.50 09/04/21 Carbon Tetrachloride ND ug/L0.50 09/04/21 Chlorobenzene ND ug/L0.50 09/04/21 cis-1,2-Dichloroethene ND ug/L0.50 09/04/21 cis-1,3-Dichloropropene ND ug/L0.50 09/04/21 Dichloromethane ND ug/L0.50 09/04/21 Ethylbenzene ND ug/L0.50 09/04/21 m,p-Xylenes ND ug/L0.50 09/04/21 Methyl-t-butyl ether ND ug/L0.50 09/04/21 o-Xylene ND ug/L0.50 09/04/21 Styrene ND ug/L0.50 09/04/21 Tetrachloroethene (PCE) ND ug/L0.50 09/04/21 Toluene ND ug/L0.50 09/04/21 trans-1,2-Dichloroethene ND ug/L0.50 09/04/21 trans-1,3-Dichloropropene ND ug/L0.50 09/04/21 Trichloroethene (TCE) ND ug/L0.50 09/04/21 Trichlorofluoromethane ND ug/L5.0 09/04/21 Vinyl Chloride ND ug/L0.50 09/04/21 Total 1,3-Dichloropropene ND ug/L0.50 09/04/21 Total Xylenes ND ug/L0.50 09/04/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 11959 50 09/04/21 70-130Surrogate: Bromofluorobenzene 11357 50 09/04/21 Blank Spike (AEI0225-BS1) 70-130941,1,1-Trichloroethane 109.4 ug/L0.50 ND 09/04/21 70-130981,1,2,2-Tetrachloroethane 109.8 ug/L0.50 ND 09/04/21 70-130941,1,2-Trichloro-1,2,2-trifluoroethane 109.4 ug/L10 ND 09/04/21 70-1301041,1,2-Trichloroethane 1010ug/L0.50 ND 09/04/21 70-130921,1-Dichloroethane 109.2 ug/L0.50 ND 09/04/21 70-130871,1-Dichloroethene 108.7 ug/L0.50 ND 09/04/21 70-130911,2,4-Trichlorobenzene 109.1 ug/L0.50 ND 09/04/21 70-130941,2-Dichlorobenzene 109.4 ug/L0.50 ND 09/04/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 16 of 22 AEI0394 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEI0225 Prepared: 9/3/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank Spike (AEI0225-BS1) 70-130961,2-Dichloroethane 109.6 ug/L0.50 ND 09/04/21 70-130991,2-Dichloropropane 109.9 ug/L0.50 ND 09/04/21 70-130941,4-Dichlorobenzene 109.4 ug/L0.50 ND 09/04/21 70-13098Benzene109.8 ug/L0.50 ND 09/04/21 70-13091Carbon Tetrachloride 109.1 ug/L0.50 ND 09/04/21 70-130100Chlorobenzene1010ug/L0.50 ND 09/04/21 70-13094cis-1,2-Dichloroethene 109.4 ug/L0.50 ND 09/04/21 70-13099cis-1,3-Dichloropropene 109.9 ug/L0.50 ND 09/04/21 70-13094Dichloromethane109.4 ug/L0.50 ND 09/04/21 70-13099Ethylbenzene109.9 ug/L0.50 ND 09/04/21 70-13098m,p-Xylenes 2020ug/L0.50 ND 09/04/21 70-130104Methyl-t-butyl ether 2021ug/L0.50 ND 09/04/21 70-13097o-Xylene 109.7 ug/L0.50 ND 09/04/21 70-13097Styrene109.7 ug/L0.50 ND 09/04/21 70-13096Tetrachloroethene (PCE)109.6 ug/L0.50 ND 09/04/21 70-13098Toluene109.8 ug/L0.50 ND 09/04/21 70-13093trans-1,2-Dichloroethene 109.3 ug/L0.50 ND 09/04/21 70-130100trans-1,3-Dichloropropene 1010ug/L0.50 ND 09/04/21 70-130100Trichloroethene (TCE)1010ug/L0.50 ND 09/04/21 70-13089Trichlorofluoromethane108.9 ug/L5.0 ND 09/04/21 70-13088Vinyl Chloride 108.8 ug/L0.50 ND 09/04/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 9950 50 09/04/21 70-130Surrogate: Bromofluorobenzene 10150 50 09/04/21 Blank Spike Dup (AEI0225-BSD1) 3070-13099 51,1,1-Trichloroethane 109.9 ug/L0.50 ND 09/04/21 3070-130104 51,1,2,2-Tetrachloroethane 1010ug/L0.50 ND 09/04/21 3070-13096 2 1,1,2-Trichloro-1,2,2-trifluoroethane 109.6 ug/L10 ND 09/04/21 3070-130102 11,1,2-Trichloroethane 1010ug/L0.50 ND 09/04/21 3070-13099 71,1-Dichloroethane 109.9 ug/L0.50 ND 09/04/21 3070-13098 111,1-Dichloroethene 109.8 ug/L0.50 ND 09/04/21 3070-13099 91,2,4-Trichlorobenzene 109.9 ug/L0.50 ND 09/04/21 3070-130101 71,2-Dichlorobenzene 1010ug/L0.50 ND 09/04/21 3070-130100 41,2-Dichloroethane 1010ug/L0.50 ND 09/04/21 3070-13099 11,2-Dichloropropane 109.9 ug/L0.50 ND 09/04/21 3070-130101 61,4-Dichlorobenzene 1010ug/L0.50 ND 09/04/21 3070-13098 0Benzene109.8 ug/L0.50 ND 09/04/21 3070-13097 6Carbon Tetrachloride 109.7 ug/L0.50 ND 09/04/21 3070-130103 3Chlorobenzene1010ug/L0.50 ND 09/04/21 3070-130101 7cis-1,2-Dichloroethene 1010ug/L0.50 ND 09/04/21 3070-130101 2cis-1,3-Dichloropropene 1010ug/L0.50 ND 09/04/21 3070-130101 7Dichloromethane1010ug/L0.50 ND 09/04/21 3070-130101 2Ethylbenzene1010ug/L0.50 ND 09/04/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 17 of 22 AEI0394 General Organics Quality Control Report BSK Associates Laboratory Fresno Analyte Result Units Level Spike Result %REC Limits RPD Limit QualRL Source %REC RPD Date Analyzed Batch: AEI0225 Prepared: 9/3/2021 Analyst: ANMPrep Method: EPA 524.2 EPA 524.2 - Quality Control Blank Spike Dup (AEI0225-BSD1) 3070-130100 3m,p-Xylenes 2020ug/L0.50 ND 09/04/21 3070-130102 2Methyl-t-butyl ether 2020ug/L0.50 ND 09/04/21 3070-130101 3o-Xylene 1010ug/L0.50 ND 09/04/21 3070-130101 4Styrene1010ug/L0.50 ND 09/04/21 3070-13096 0Tetrachloroethene (PCE)109.6 ug/L0.50 ND 09/04/21 3070-130100 2Toluene1010ug/L0.50 ND 09/04/21 3070-13099 7trans-1,2-Dichloroethene 109.9 ug/L0.50 ND 09/04/21 3070-130106 5trans-1,3-Dichloropropene 1011ug/L0.50 ND 09/04/21 3070-13098 1Trichloroethene (TCE)109.8 ug/L0.50 ND 09/04/21 3070-13096 7Trichlorofluoromethane109.6 ug/L5.0 ND 09/04/21 3070-13095 8Vinyl Chloride 109.5 ug/L0.50 ND 09/04/21 70-130Surrogate: 1,2-Dichlorobenzene-d4 10653 50 09/04/21 70-130Surrogate: Bromofluorobenzene 10753 50 09/04/21 www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 18 of 22 AEI0394 General Certificate of Analysis Notes: • The Chain of Custody document and Sample Integrity Sheet are part of the analytical report. • Any remaining sample(s) for testing will be disposed of according to BSK’s sample retention policy unless other arrangements are made in advance. • All positive results for EPA Methods 504.1 and 524.2 require the analysis of a Field Reagent Blank (FRB) to confirm that the results are not a contamination error from field sampling steps. If Field Reagent Blanks were not submitted with the samples, this method requirement has not been performed. • Samples collected by BSK Analytical Laboratories were collected in accordance with the BSK Sampling and Collection Standard Operating Procedures. • J-value is equivalent to DNQ (Detected, not quantified) which is a trace value. A trace value is an analyte detected between the MDL and the laboratory reporting limit. This result is of an unknown data quality and is only qualitative (estimated). Baseline noise, calibration curve extrapolation below the lowest calibrator, method blank detections, and integration artifacts can all produce apparent DNQ values, which contribute to the un-reliability of these values. • (1) - Residual chlorine and pH analysis have a 15 minute holding time for both drinking and waste water samples as defined by the EPA and 40 CFR 136. Waste water and ground water (monitoring well) samples must be field filtered to meet the 15 minute holding time for dissolved metals. • Field tests are outside the scope of laboratory accreditation and there is no certification available for field testing. • Summations of analytes (i.e. Total Trihalomethanes) may appear to add individual amounts incorrectly, due to rounding of analyte values occurring before or after the total value is calculated, as well as rounding of the total value. • RL Multiplier is the factor used to adjust the reporting limit (RL) due to variations in sample preparation procedures and dilutions required for matrix interferences. • Due to the subjective nature of the Threshold Odor Method, all characterizations of the detected odor are the opinion of the panel of analysts. The characterizations can be found in Standard Methods 2170B Figure 2170:1. • The MCLs provided in this report (if applicable) represent the primary MCLs for that analyte. • (2) - Formerly known as Bis(2-Chloroisopropyl) ether. Definitions mg/L: Milligrams/Liter (ppm) mg/Kg: Milligrams/Kilogram (ppm) g/L: Micrograms/Liter (ppb) g/Kg: Micrograms/Kilogram (ppb) %: Percent NR: Non-Reportable MDL: Method Detection Limit RL: Reporting Limit: DL x Dilution ND: None Detected below MRL/MDL pCi/L: PicoCuries per Liter RL Mult: RL Multiplier MCL: Maximum Contaminant Limit MDA95: Min. Detected Activity MPN: Most Probable Number CFU: Colony Forming Unit Absent: Less than 1 CFU/100mLs Present: 1 or more CFU/100mLs U: The analyte was not detected at or above the reported sample quantitation limit. BSK is not accredited under the NELAP program for the following parameters:**NA** Please see the individual Subcontract Lab’s report for applicable certifications. www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 19 of 22 AEI0394 General Certificate of Analysis Certifications: Please refer to our website for a copy of our Accredited Fields of Testing under each certification. Fresno 1180State of California - ELAP 4021State of Hawaii 9254479Los Angeles CSD 4021-018NELAP certified CA000792022-1State of Nevada 4021-018State of Oregon - NELAP CA00079EPA - UCMR4 C997-21aState of Washington Sacramento 2435State of California - ELAP San Bernardino 2993State of California - ELAP 9254478Los Angeles CSD 4119-006NELAP certified 4119-006State of Oregon - NELAP Vancouver WA100008-014NELAP certified WA100008-014State of Oregon - NELAP C824-20aState of Washington www.BSKAssociates.com The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. AEI0394 FINAL 09202021 1538 Page 20 of 22 Page 21 of 22 Page 22 of 22 Boring Locations, Utilities, and Pavement Repair Remedial Investigation Report City of San Luis Obispo | J Appendix J Boring Locations, Utilities, and Pavement Repair J Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Boring Iden fica on: B-01 Coordinates: 35.277276, -120.669407 Approximate Street Loca on: End of Dana Street Street View Street Photo B-01 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project B-01 Aerial View Boring Iden fica on: B-02 Coordinates: 35.276280, -120.668381 Approximate Street Loca on: Higuera Street and Carmel Street Street View B-02 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Street Photo Aerial View Boring Iden fica on: B-03 Coordinates: 35.275910, -120.668101 Approximate Street Loca on: Carmel Street near Higuera Street Street View Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-03 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Street Photo Aerial View Boring Iden fica on: B-04 Coordinates: 35.275625, -120.667671 Approximate Street Loca on: Carmel Street near Marsh Street Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Street View B-04 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Street Photo Aerial View Boring Iden fica on: B-05 Coordinates: 35.272492, -120.670557 Approximate Street Loca on: Bianchi Lane near creek Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Street View Street Photo B-05 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-06 Coordinates: 35.272451, -120.670244 Approximate Street Loca on: Bianchi Lane Street View Street Photo B-06 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Boring Iden fica on: B-07 Coordinates: 35.272453, -120.669902 Approximate Street Loca on: Bianchi Lane near Higuera Stret Street View Street Photo B-07 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Boring Iden fica on: B-08 Coordinates: 35.272143, -120.669482 Approximate Street Loca on: High Street near Higuera Street Street View Street Photo B-08 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Boring Iden fica on: B-09 Coordinates: 35.272233, -120.668543 Approximate Street Loca on: High Street Street View Street Photo B-09 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Boring Iden fica on: B-10 Coordinates: 35.272235, -120.667981 Approximate Street Loca on: High Street and Beebee Street Street View Street Photo B-10 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Boring Iden fica on: B-11 Coordinates: 35.264866, -120.675394 Approximate Street Loca on: Madonna Road Street View Street Photo B-11 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Boring Iden fica on: B-12 Coordinates: 35.265250, -120.674857 Approximate Street Loca on: Madonna Road Street View Street Photo B-12 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Boring Iden fica on: B-13 Coordinates: 35.267160, -120.672144 Approximate Street Loca on: Madonna Road Street View Street Photo B-13 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Boring Iden fica on: B-14 Coordinates: 35.267996, -120.671070 Approximate Street Loca on: Madonna Road near Higuera Street Street View Street Photo B-14 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Boring Iden fica on: B-15 Coordinates: 35.267699, -120.670339 Approximate Street Loca on: Higuera Street near Bridge Street Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-15 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-16 Coordinates: 35.267558, -120.669605 Approximate Street Loca on: Bridge Street near Higuera Street Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-16 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-17 Coordinates: 35.263176, -120.674151 Approximate Street Loca on: Adjacent to Highway 101 On-Ramp Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-17 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-18 Coordinates: 35.262458, -120.678733 Approximate Street Loca on: Madonna Road near El Mercado Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-18 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-19 Coordinates: 35.261600, -120.677292 Approximate Street Loca on: El Mercado Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-19 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-20 Coordinates: 35.260630, -120.675855 Approximate Street Loca on: El Mercado Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-20 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-21 Coordinates: 35.259399, -120.674224 Approximate Street Loca on: End of El Mercado Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-21 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-22 Coordinates: 35.256509, -120.673557 Approximate Street Loca on: Prado Road near Elks Lane Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-22 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-23 Coordinates: 35.255696, -120.671819 Approximate Street Loca on: Prado Road Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-23 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-24 Coordinates: 35.255200, -120.670619 Approximate Street Loca on: Prado Road near Higuera Street Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-24 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-25 Coordinates: 35.257113, -120.681447 Approximate Street Loca on: San Luis Ranch Street View Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-25 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Street Photo Note: Boring location will be paved by the time construction occurs. Homes may be under construction or occupied during boring, and coordination with home owner will be needed. Aerial View Boring Iden fica on: B-29 Coordinates: 35.253649, -120.675604 Approximate Street Loca on: City of San Luis Obispo Corp Yard Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-29 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-31 Coordinates: 35.250928, -120.672202 Approximate Street Loca on: Zaca Lane near South Higuera Street Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-31 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-32 Coordinates: 35.250798, -120.683530 Approximate Street Loca on: Auto Park Circle Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-32 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-33 Coordinates: 35.242363, -120.679413 Approximate Street Loca on: Los Osos Valley Road Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-33 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Aerial View Boring Iden fica on: B-34 Coordinates: 35.241530, -120.676851 Approximate Street Loca on: South Higuera Street near Los Osos Valley Road Street View Street Photo Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings B-34 City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Boring Iden fica on: B-11R Coordinates: 35.267695, -120.667789 Approximate Street Loca on: Bridge Street near BeeBee Street B-11R City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Street View Street Photo Boring Iden fica on: B-18R Coordinates: 35.256672, -120.678097 Approximate Street Loca on: Froom Ranch Way, next to the traffic circle B-18R City of San Luis Obispo Proposition 1 Tetrachloroethylene Characterization Project Underground U li es Communica ons Recycled Water Sewer Water Wastewater Force Main Wastewater Gravity Main Proposed Exploratory Groundwater Borings Aerial View Street View Field Notes and Photos from Boring Investigation Fieldwork Remedial Investigation Report City of San Luis Obispo | K Appendix K Field Notes and Photos from Boring Investigation Fieldwork K FGL Soil Sample Lab Results from Exploratory Borings Remedial Investigation Report City of San Luis Obispo | L Appendix L FGL Soil Sample Lab Results from Exploratory Borings L Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists May 9, 2022 Water Systems Consulting, Inc. Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Subject: Subcontract Analysis for FGL Lab No. CC 2280982 Enclosed please find results for the following sample(s) which were received by FGL. Sub Organic-TOC_Soill Please note that this analysis was performed by McCampbell Analytical, Inc. (ELAP Certified Laboratory) Thank you for using FGL Environmental. Sincerely, Cindy Aguirre Digitally signed by Cindy Aguirre Title: Customer Service Rep Date: 2022-05-09 Enclosure WorkOrder: Report Created for:FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Project Contact:Cindy Aguirre Project:CC 2280982 Project P.O.: Project Received:04/29/2022 Analytical Report reviewed & approved for release on 05/05/2022 by: Christine Askari 2204H80 The report shall not be reproduced except in full, without the written approval of the laboratory. The analytical results relate only to the items tested. Results reported conform to the most current NELAP standards, where applicable, unless otherwise stated in a case narrative. Analytical Report 1534 Willow Pass Rd. Pittsburg, CA 94565 ♦ TEL: (877) 252-9262 ♦ FAX: (925) 252-9269 ♦ www.mccampbell.com CA ELAP 1644 ♦ NELAP 4033 ORELAP Project Manager McCampbell Analytical, Inc. "When Quality Counts" Page 1 of 8 Glossary of Terms & Qualifier Definitions Client:FGL Environmental Project:CC 2280982 WorkOrder:2204H80 McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Glossary Abbreviation %D Serial Dilution Percent Difference 95% Interval 95% Confident Interval CPT Consumer Product Testing not NELAP Accredited DF Dilution Factor DI WET (DISTLC) Waste Extraction Test using DI water DISS Dissolved (direct analysis of 0.45 µm filtered and acidified water sample) DLT Dilution Test (Serial Dilution) DUP Duplicate EDL Estimated Detection Limit ERS External reference sample. Second source calibration verification. ITEF International Toxicity Equivalence Factor LCS Laboratory Control Sample LQL Lowest Quantitation Level MB Method Blank MB % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit ML Minimum Level of Quantitation MS Matrix Spike MSD Matrix Spike Duplicate NA Not Applicable ND Not detected at or above the indicated MDL or RL NR Data Not Reported due to matrix interference or insufficient sample amount. PDS Post Digestion Spike PDSD Post Digestion Spike Duplicate PF Prep Factor RD Relative Difference RL Reporting Limit (The RL is the lowest calibration standard in a multipoint calibration.) RPD Relative Percent Deviation RRT Relative Retention Time SPK Val Spike Value SPKRef Val Spike Reference Value SPLP Synthetic Precipitation Leachate Procedure ST Sorbent Tube TCLP Toxicity Characteristic Leachate Procedure TEQ Toxicity Equivalents TZA TimeZone Net Adjustment for sample collected outside of MAI's UTC. WET (STLC)Waste Extraction Test (Soluble Threshold Limit Concentration) Page 2 of 8 Analytical Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2280982 Date Received:04/29/2022 9:34 Date Prepared:05/03/2022 WorkOrder:2204H80 Extraction Method:SW9060A Analytical Method:SW9060A Unit:mg/kg Total Organic Carbon (TOC) B-02-50 Depth 2204H80-001A Soil 03/22/2022 03:21 WC_CNS F050322-1_0928_13 244722 Analytes Result DF Date AnalyzedRL Client ID Lab ID Matrix Date Collected Instrument Batch ID TOC 2700 200 1 05/03/2022 22:27 Analyst(s):DMA NELAP 4033ORELAP Page 3 of 8 Quality Control Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2280982 Date Analyzed:05/03/2022 Date Prepared:05/03/2022 WorkOrder:2204H80 BatchID:244722 Analytical Method:SW9060A Unit:mg/kg Sample ID:MB/LCS/LCSD-244722 Instrument:WC_CNS Matrix:Soil Extraction Method:SW9060A QC Summary Report for SW9060A Analyte MB Result MDL RL TOC ND 200 200 --- Analyte LCS Result LCSD Result SPK Val LCS %REC LCSD %REC LCS/LCSD Limits RPD RPD Limit TOC 8200 8200 8200 100 100 80-120 0.0497 20 NELAP 4033ORELAP Page 4 of 8 McCampbell Analytical, Inc. 1534 Willow Pass Rd Pittsburg, CA 94565-1701 (925) 252-9262 CHAIN-OF-CUSTODY RECORD Page Lab ID Matrix Collection Date Hold Requested Tests (See legend below) Report to: Cindy Aguirre P.O. Box 272 Santa Paula, CA 93061-0272 (805) 392-2000 FAX: PO: 05/02/2022 ClientSampID Project:CC 2280982 WorkOrder:2204H80 1 of 1 Date Logged: Date Received:04/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 FGL Environmental Bill to: Accounts Payable FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Requested TAT:5 days; ClientCode:FGLE Email:cindya@fglinc.com EDF EQuIS Email HardCopy ThirdParty Excel J-flagCLIP cc/3rd Party: WaterTrax Detection Summary Dry-Weight A2204H80-001 Soil 3/22/2022 03:21B-02-50 Depth A Prepared by: Lilly Ortiz NOTE: Soil samples are discarded 60 days after receipt unless other arrangements are made (Water samples are 30 days). Hazardous samples will be returned to client or disposed of at client expense. Comments: cnsTOC_S PRDisposal Fee12 3 4 5 6 7 8 9 10 Test Legend: 11 12 Page 5 of 8 LabID ClientSampID Collection Date & Time Date Logged: TATMatrixTest Name Containers /Composites WORK ORDER SUMMARY Work Order:2204H80 Comments Client Name:FGL ENVIRONMENTAL Project:CC 2280982 QC Level:LEVEL 2 HoldDry- Weight Sub Out Bottle & Preservative 5/2/2022 Sediment Content EDF EQuIS Email HardCopy ThirdPartyExcel J-flagWriteOn Cindy AguirreClient Contact: cindya@fglinc.comContact's Email: WaterTrax Test Due DateHead Space U** McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" 001A B-02-50 Depth 3/22/2022 3:21 5 daysSoilSW9060A (TOC)1 8OZ GJ, Unpres 5/6/2022 1 of 1Page * STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission). NOTES: - MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client. U** = An unpreserved container was received for a method that suggests a preservation in order to extend hold time for analysis. Page 6 of 8 Page 7 of 8 Sample Receipt Checklist McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client Name:FGL Environmental WorkOrder №:2204H80 Date Logged:5/2/2022 Logged by:Lilly OrtizMatrix:Soil Carrier:Golden State Overnight Shipping container/cooler in good condition?Yes No Custody seals intact on shipping container/cooler?Yes No NA Samples Received on Ice?Yes No Chain of custody present?Yes No Chain of custody signed when relinquished and received?Yes No Chain of custody agrees with sample labels?Yes No Samples in proper containers/bottles?Yes No Sample containers intact?Yes No Sufficient sample volume for indicated test?Yes No NAAll samples received within holding time?Yes No NASample/Temp Blank temperature Yes No NAZHS conditional analyses: VOA meets zero headspace requirement (VOCs, TPHg/BTEX, RSK)? pH acceptable upon receipt (Metal: <2; Nitrate 353.2/4500NO3: <2; 522: <4; 218.7: >8)? Yes No NA Temp:3.2°C Chain of Custody (COC) Information Yes NoSample IDs noted by Client on COC? Yes NoDate and Time of collection noted by Client on COC? Yes NoSampler's name noted on COC? Sample Receipt Information Sample Preservation and Hold Time (HT) Information Sample labels checked for correct preservation?Yes No Project:CC 2280982 (Ice Type:WET ICE ) Comments: pH tested and acceptable upon receipt (200.7: ≤2; 533: 6 - 8; 537.1: 6 - 8)? Yes No NA UCMR Samples: Free Chlorine tested and acceptable upon receipt (<0.1mg/L) [not applicable to 200.7]? Yes No NA Date and Time Received:4/29/2022 09:34 Received by:Lilly Ortiz COC agrees with Quote?Yes No NA Custody seals intact on sample bottles?Yes No NA Page 8 of 8 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists May 10, 2022 Water Systems Consulting, Inc. Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Subject: Subcontract Analysis for FGL Lab No. CC 2280949 Enclosed please find results for the following sample(s) which were received by FGL. Sub Organic-TOC_Soill Please note that this analysis was performed by McCampbell Analytical, Inc. (ELAP Certified Laboratory) Thank you for using FGL Environmental. Sincerely, Cindy Aguirre Digitally signed by Cindy Aguirre Title: Customer Service Rep Date: 2022-05-10 Enclosure WorkOrder: Report Created for:FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Project Contact:Cindy Aguirre Project:CC 2280949 Project P.O.: Project Received:04/29/2022 Analytical Report reviewed & approved for release on 05/06/2022 by: Yen Cao 2204H84 The report shall not be reproduced except in full, without the written approval of the laboratory. The analytical results relate only to the items tested. Results reported conform to the most current NELAP standards, where applicable, unless otherwise stated in a case narrative. Analytical Report 1534 Willow Pass Rd. Pittsburg, CA 94565 ♦ TEL: (877) 252-9262 ♦ FAX: (925) 252-9269 ♦ www.mccampbell.com CA ELAP 1644 ♦ NELAP 4033 ORELAP Project Manager McCampbell Analytical, Inc. "When Quality Counts" Page 1 of 8 Glossary of Terms & Qualifier Definitions Client:FGL Environmental Project:CC 2280949 WorkOrder:2204H84 McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Glossary Abbreviation %D Serial Dilution Percent Difference 95% Interval 95% Confident Interval CPT Consumer Product Testing not NELAP Accredited DF Dilution Factor DI WET (DISTLC) Waste Extraction Test using DI water DISS Dissolved (direct analysis of 0.45 µm filtered and acidified water sample) DLT Dilution Test (Serial Dilution) DUP Duplicate EDL Estimated Detection Limit ERS External reference sample. Second source calibration verification. ITEF International Toxicity Equivalence Factor LCS Laboratory Control Sample LQL Lowest Quantitation Level MB Method Blank MB % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit ML Minimum Level of Quantitation MS Matrix Spike MSD Matrix Spike Duplicate NA Not Applicable ND Not detected at or above the indicated MDL or RL NR Data Not Reported due to matrix interference or insufficient sample amount. PDS Post Digestion Spike PDSD Post Digestion Spike Duplicate PF Prep Factor RD Relative Difference RL Reporting Limit (The RL is the lowest calibration standard in a multipoint calibration.) RPD Relative Percent Deviation RRT Relative Retention Time SPK Val Spike Value SPKRef Val Spike Reference Value SPLP Synthetic Precipitation Leachate Procedure ST Sorbent Tube TCLP Toxicity Characteristic Leachate Procedure TEQ Toxicity Equivalents TZA TimeZone Net Adjustment for sample collected outside of MAI's UTC. WET (STLC)Waste Extraction Test (Soluble Threshold Limit Concentration) Page 2 of 8 Analytical Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2280949 Date Received:04/29/2022 9:34 Date Prepared:05/04/2022 WorkOrder:2204H84 Extraction Method:SW9060A Analytical Method:SW9060A Unit:mg/kg Total Organic Carbon (TOC) B-08-43 Depth 2204H84-001A Soil 03/16/2022 14:50 WC_CNS F050422-1_0953_13 244795 Analytes Result DF Date AnalyzedRL Client ID Lab ID Matrix Date Collected Instrument Batch ID TOC 950 200 1 05/04/2022 19:08 Analyst(s):DMA NELAP 4033ORELAP Page 3 of 8 Quality Control Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2280949 Date Analyzed:05/04/2022 Date Prepared:05/04/2022 WorkOrder:2204H84 BatchID:244795 Analytical Method:SW9060A Unit:mg/kg Sample ID:MB/LCS/LCSD-244795 Instrument:WC_CNS Matrix:Soil Extraction Method:SW9060A QC Summary Report for SW9060A Analyte MB Result MDL RL TOC ND 200 200 --- Analyte LCS Result LCSD Result SPK Val LCS %REC LCSD %REC LCS/LCSD Limits RPD RPD Limit TOC 8200 8200 8200 100 100 80-120 0.185 20 NELAP 4033ORELAP Page 4 of 8 McCampbell Analytical, Inc. 1534 Willow Pass Rd Pittsburg, CA 94565-1701 (925) 252-9262 CHAIN-OF-CUSTODY RECORD Page Lab ID Matrix Collection Date Hold Requested Tests (See legend below) Report to: Cindy Aguirre P.O. Box 272 Santa Paula, CA 93061-0272 (805) 392-2027 FAX: PO: 05/02/2022 ClientSampID Project:CC 2280949 WorkOrder:2204H84 1 of 1 Date Logged: Date Received:04/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 FGL Environmental Bill to: Accounts Payable FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Requested TAT:5 days; ClientCode:FGLE Email:cindya@fglinc.com EDF EQuIS Email HardCopy ThirdParty Excel J-flagCLIP cc/3rd Party: WaterTrax Detection Summary Dry-Weight A2204H84-001 Soil 3/16/2022 14:50B-08-43 Depth A Prepared by: Lilly Ortiz NOTE: Soil samples are discarded 60 days after receipt unless other arrangements are made (Water samples are 30 days). Hazardous samples will be returned to client or disposed of at client expense. Comments: cnsTOC_S PRDisposal Fee12 3 4 5 6 7 8 9 10 Test Legend: 11 12 Page 5 of 8 LabID ClientSampID Collection Date & Time Date Logged: TATMatrixTest Name Containers /Composites WORK ORDER SUMMARY Work Order:2204H84 Comments Client Name:FGL ENVIRONMENTAL Project:CC 2280949 QC Level:LEVEL 2 HoldDry- Weight Sub Out Bottle & Preservative 5/2/2022 Sediment Content EDF EQuIS Email HardCopy ThirdPartyExcel J-flagWriteOn Cindy AguirreClient Contact: cindya@fglinc.comContact's Email: WaterTrax Test Due DateHead Space U** McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" 001A B-08-43 Depth 3/16/2022 14:50 5 daysSoilSW9060A (TOC)1 8OZ GJ, Unpres 5/6/2022 1 of 1Page * STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission). NOTES: - MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client. U** = An unpreserved container was received for a method that suggests a preservation in order to extend hold time for analysis. Page 6 of 8 Page 7 of 8 Sample Receipt Checklist McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client Name:FGL Environmental WorkOrder №:2204H84 Date Logged:5/2/2022 Logged by:Lilly OrtizMatrix:Soil Carrier:Golden State Overnight Shipping container/cooler in good condition?Yes No Custody seals intact on shipping container/cooler?Yes No NA Samples Received on Ice?Yes No Chain of custody present?Yes No Chain of custody signed when relinquished and received?Yes No Chain of custody agrees with sample labels?Yes No Samples in proper containers/bottles?Yes No Sample containers intact?Yes No Sufficient sample volume for indicated test?Yes No NAAll samples received within holding time?Yes No NASample/Temp Blank temperature Yes No NAZHS conditional analyses: VOA meets zero headspace requirement (VOCs, TPHg/BTEX, RSK)? pH acceptable upon receipt (Metal: <2; Nitrate 353.2/4500NO3: <2; 522: <4; 218.7: >8)? Yes No NA Temp:3.2°C Chain of Custody (COC) Information Yes NoSample IDs noted by Client on COC? Yes NoDate and Time of collection noted by Client on COC? Yes NoSampler's name noted on COC? Sample Receipt Information Sample Preservation and Hold Time (HT) Information Sample labels checked for correct preservation?Yes No Project:CC 2280949 (Ice Type:WET ICE ) Comments: pH tested and acceptable upon receipt (200.7: ≤2; 533: 6 - 8; 537.1: 6 - 8)? Yes No NA UCMR Samples: Free Chlorine tested and acceptable upon receipt (<0.1mg/L) [not applicable to 200.7]? Yes No NA Date and Time Received:4/29/2022 09:34 Received by:Lilly Ortiz COC agrees with Quote?Yes No NA Custody seals intact on sample bottles?Yes No NA Page 8 of 8 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists May 9, 2022 Water Systems Consulting, Inc. Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Subject: Subcontract Analysis for FGL Lab No. CC 2280983 Enclosed please find results for the following sample(s) which were received by FGL. Sub Organic-TOC_Soill Please note that this analysis was performed by McCampbell Analytical, Inc. (ELAP Certified Laboratory) Thank you for using FGL Environmental. Sincerely, Cindy Aguirre Digitally signed by Cindy Aguirre Title: Customer Service Rep Date: 2022-05-09 Enclosure WorkOrder: Report Created for:FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Project Contact:Cindy Aguirre Project:CC 2280983 Project P.O.: Project Received:04/29/2022 Analytical Report reviewed & approved for release on 05/05/2022 by: Christine Askari 2204H82 The report shall not be reproduced except in full, without the written approval of the laboratory. The analytical results relate only to the items tested. Results reported conform to the most current NELAP standards, where applicable, unless otherwise stated in a case narrative. Analytical Report 1534 Willow Pass Rd. Pittsburg, CA 94565 ♦ TEL: (877) 252-9262 ♦ FAX: (925) 252-9269 ♦ www.mccampbell.com CA ELAP 1644 ♦ NELAP 4033 ORELAP Project Manager McCampbell Analytical, Inc. "When Quality Counts" Page 1 of 8 Glossary of Terms & Qualifier Definitions Client:FGL Environmental Project:CC 2280983 WorkOrder:2204H82 McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Glossary Abbreviation %D Serial Dilution Percent Difference 95% Interval 95% Confident Interval CPT Consumer Product Testing not NELAP Accredited DF Dilution Factor DI WET (DISTLC) Waste Extraction Test using DI water DISS Dissolved (direct analysis of 0.45 µm filtered and acidified water sample) DLT Dilution Test (Serial Dilution) DUP Duplicate EDL Estimated Detection Limit ERS External reference sample. Second source calibration verification. ITEF International Toxicity Equivalence Factor LCS Laboratory Control Sample LQL Lowest Quantitation Level MB Method Blank MB % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit ML Minimum Level of Quantitation MS Matrix Spike MSD Matrix Spike Duplicate NA Not Applicable ND Not detected at or above the indicated MDL or RL NR Data Not Reported due to matrix interference or insufficient sample amount. PDS Post Digestion Spike PDSD Post Digestion Spike Duplicate PF Prep Factor RD Relative Difference RL Reporting Limit (The RL is the lowest calibration standard in a multipoint calibration.) RPD Relative Percent Deviation RRT Relative Retention Time SPK Val Spike Value SPKRef Val Spike Reference Value SPLP Synthetic Precipitation Leachate Procedure ST Sorbent Tube TCLP Toxicity Characteristic Leachate Procedure TEQ Toxicity Equivalents TZA TimeZone Net Adjustment for sample collected outside of MAI's UTC. WET (STLC)Waste Extraction Test (Soluble Threshold Limit Concentration) Page 2 of 8 Analytical Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2280983 Date Received:04/29/2022 9:34 Date Prepared:05/03/2022 WorkOrder:2204H82 Extraction Method:SW9060A Analytical Method:SW9060A Unit:mg/kg Total Organic Carbon (TOC) B-15-50 Depth 2204H82-001A Soil 03/22/2022 10:40 WC_CNS F050322-1_0928_15 244722 Analytes Result DF Date AnalyzedRL Client ID Lab ID Matrix Date Collected Instrument Batch ID TOC 1100 200 1 05/03/2022 22:51 Analyst(s):DMA NELAP 4033ORELAP Page 3 of 8 Quality Control Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2280983 Date Analyzed:05/03/2022 Date Prepared:05/03/2022 WorkOrder:2204H82 BatchID:244722 Analytical Method:SW9060A Unit:mg/kg Sample ID:MB/LCS/LCSD-244722 Instrument:WC_CNS Matrix:Soil Extraction Method:SW9060A QC Summary Report for SW9060A Analyte MB Result MDL RL TOC ND 200 200 --- Analyte LCS Result LCSD Result SPK Val LCS %REC LCSD %REC LCS/LCSD Limits RPD RPD Limit TOC 8200 8200 8200 100 100 80-120 0.0497 20 NELAP 4033ORELAP Page 4 of 8 McCampbell Analytical, Inc. 1534 Willow Pass Rd Pittsburg, CA 94565-1701 (925) 252-9262 CHAIN-OF-CUSTODY RECORD Page Lab ID Matrix Collection Date Hold Requested Tests (See legend below) Report to: Cindy Aguirre P.O. Box 272 Santa Paula, CA 93061-0272 (805) 392-2000 FAX: PO: 05/02/2022 ClientSampID Project:CC 2280983 WorkOrder:2204H82 1 of 1 Date Logged: Date Received:04/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 FGL Environmental Bill to: Accounts Payable FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Requested TAT:5 days; ClientCode:FGLE Email:cindya@fglinc.com EDF EQuIS Email HardCopy ThirdParty Excel J-flagCLIP cc/3rd Party: WaterTrax Detection Summary Dry-Weight A2204H82-001 Soil 3/22/2022 10:40B-15-50 Depth A Prepared by: Lilly Ortiz NOTE: Soil samples are discarded 60 days after receipt unless other arrangements are made (Water samples are 30 days). Hazardous samples will be returned to client or disposed of at client expense. Comments: cnsTOC_S PRDisposal Fee12 3 4 5 6 7 8 9 10 Test Legend: 11 12 Page 5 of 8 LabID ClientSampID Collection Date & Time Date Logged: TATMatrixTest Name Containers /Composites WORK ORDER SUMMARY Work Order:2204H82 Comments Client Name:FGL ENVIRONMENTAL Project:CC 2280983 QC Level:LEVEL 2 HoldDry- Weight Sub Out Bottle & Preservative 5/2/2022 Sediment Content EDF EQuIS Email HardCopy ThirdPartyExcel J-flagWriteOn Cindy AguirreClient Contact: cindya@fglinc.comContact's Email: WaterTrax Test Due DateHead Space U** McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" 001A B-15-50 Depth 3/22/2022 10:40 5 daysSoilSW9060A (TOC)1 8OZ GJ, Unpres 5/6/2022 1 of 1Page * STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission). NOTES: - MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client. U** = An unpreserved container was received for a method that suggests a preservation in order to extend hold time for analysis. Page 6 of 8 Page 7 of 8 Sample Receipt Checklist McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client Name:FGL Environmental WorkOrder №:2204H82 Date Logged:5/2/2022 Logged by:Lilly OrtizMatrix:Soil Carrier:Golden State Overnight Shipping container/cooler in good condition?Yes No Custody seals intact on shipping container/cooler?Yes No NA Samples Received on Ice?Yes No Chain of custody present?Yes No Chain of custody signed when relinquished and received?Yes No Chain of custody agrees with sample labels?Yes No Samples in proper containers/bottles?Yes No Sample containers intact?Yes No Sufficient sample volume for indicated test?Yes No NAAll samples received within holding time?Yes No NASample/Temp Blank temperature Yes No NAZHS conditional analyses: VOA meets zero headspace requirement (VOCs, TPHg/BTEX, RSK)? pH acceptable upon receipt (Metal: <2; Nitrate 353.2/4500NO3: <2; 522: <4; 218.7: >8)? Yes No NA Temp:3.2°C Chain of Custody (COC) Information Yes NoSample IDs noted by Client on COC? Yes NoDate and Time of collection noted by Client on COC? Yes NoSampler's name noted on COC? Sample Receipt Information Sample Preservation and Hold Time (HT) Information Sample labels checked for correct preservation?Yes No Project:CC 2280983 (Ice Type:WET ICE ) Comments: pH tested and acceptable upon receipt (200.7: ≤2; 533: 6 - 8; 537.1: 6 - 8)? Yes No NA UCMR Samples: Free Chlorine tested and acceptable upon receipt (<0.1mg/L) [not applicable to 200.7]? Yes No NA Date and Time Received:4/29/2022 09:34 Received by:Lilly Ortiz COC agrees with Quote?Yes No NA Custody seals intact on sample bottles?Yes No NA Page 8 of 8 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists May 9, 2022 Water Systems Consulting, Inc. Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Subject: Subcontract Analysis for FGL Lab No. CC 2281015 Enclosed please find results for the following sample(s) which were received by FGL. Sub Organic-TOC_Soill Please note that this analysis was performed by McCampbell Analytical, Inc. (ELAP Certified Laboratory) Thank you for using FGL Environmental. Sincerely, Cindy Aguirre Digitally signed by Cindy Aguirre Title: Customer Service Rep Date: 2022-05-09 Enclosure WorkOrder: Report Created for:FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Project Contact:Cindy Aguirre Project:CC 2281015 Project P.O.: Project Received:04/29/2022 Analytical Report reviewed & approved for release on 05/06/2022 by: Susan Thompson 2204H85 The report shall not be reproduced except in full, without the written approval of the laboratory. The analytical results relate only to the items tested. Results reported conform to the most current NELAP standards, where applicable, unless otherwise stated in a case narrative. Analytical Report 1534 Willow Pass Rd. Pittsburg, CA 94565 ♦ TEL: (877) 252-9262 ♦ FAX: (925) 252-9269 ♦ www.mccampbell.com CA ELAP 1644 ♦ NELAP 4033 ORELAP Project Manager McCampbell Analytical, Inc. "When Quality Counts" Page 1 of 9 Glossary of Terms & Qualifier Definitions Client:FGL Environmental Project:CC 2281015 WorkOrder:2204H85 McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Glossary Abbreviation %D Serial Dilution Percent Difference 95% Interval 95% Confident Interval CPT Consumer Product Testing not NELAP Accredited DF Dilution Factor DI WET (DISTLC) Waste Extraction Test using DI water DISS Dissolved (direct analysis of 0.45 µm filtered and acidified water sample) DLT Dilution Test (Serial Dilution) DUP Duplicate EDL Estimated Detection Limit ERS External reference sample. Second source calibration verification. ITEF International Toxicity Equivalence Factor LCS Laboratory Control Sample LQL Lowest Quantitation Level MB Method Blank MB % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit ML Minimum Level of Quantitation MS Matrix Spike MSD Matrix Spike Duplicate NA Not Applicable ND Not detected at or above the indicated MDL or RL NR Data Not Reported due to matrix interference or insufficient sample amount. PDS Post Digestion Spike PDSD Post Digestion Spike Duplicate PF Prep Factor RD Relative Difference RL Reporting Limit (The RL is the lowest calibration standard in a multipoint calibration.) RPD Relative Percent Deviation RRT Relative Retention Time SPK Val Spike Value SPKRef Val Spike Reference Value SPLP Synthetic Precipitation Leachate Procedure ST Sorbent Tube TCLP Toxicity Characteristic Leachate Procedure TEQ Toxicity Equivalents TZA TimeZone Net Adjustment for sample collected outside of MAI's UTC. WET (STLC)Waste Extraction Test (Soluble Threshold Limit Concentration) Page 2 of 9 Analytical Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2281015 Date Received:04/29/2022 9:34 Date Prepared:05/04/2022-05/05/2022 WorkOrder:2204H85 Extraction Method:SW9060A Analytical Method:SW9060A Unit:mg/kg Total Organic Carbon (TOC) B-21-45 Depth 2204H85-001A Soil 03/23/2022 15:53 WC_CNS F050422-1_0953_14 244795 Analytes Result DF Date AnalyzedRL Client ID Lab ID Matrix Date Collected Instrument Batch ID TOC 2900 320 1 05/04/2022 19:21 Analyst(s):DMA B-21-52 Depth 2204H85-002A Soil 03/23/2022 16:02 WC_CNS F050522-1_0939_12 244920 Analytes Result DF Date AnalyzedRL Client ID Lab ID Matrix Date Collected Instrument Batch ID TOC 1000 420 1 05/05/2022 23:54 Analyst(s):DMA NELAP 4033ORELAP Page 3 of 9 Quality Control Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2281015 Date Analyzed:05/04/2022 Date Prepared:05/04/2022 WorkOrder:2204H85 BatchID:244795 Analytical Method:SW9060A Unit:mg/kg Sample ID:MB/LCS/LCSD-244795 Instrument:WC_CNS Matrix:Soil Extraction Method:SW9060A QC Summary Report for SW9060A Analyte MB Result MDL RL TOC ND 200 200 --- Analyte LCS Result LCSD Result SPK Val LCS %REC LCSD %REC LCS/LCSD Limits RPD RPD Limit TOC 8200 8200 8200 100 100 80-120 0.185 20 NELAP 4033ORELAP (Cont.) Page 4 of 9 Quality Control Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2281015 Date Analyzed:05/05/2022 Date Prepared:05/05/2022 WorkOrder:2204H85 BatchID:244920 Analytical Method:SW9060A Unit:mg/kg Sample ID:MB/LCS/LCSD-244920 Instrument:WC_CNS Matrix:Soil Extraction Method:SW9060A QC Summary Report for SW9060A Analyte MB Result MDL RL TOC ND 200 200 --- Analyte LCS Result LCSD Result SPK Val LCS %REC LCSD %REC LCS/LCSD Limits RPD RPD Limit TOC 8100 8200 8200 99 100 80-120 0.663 20 NELAP 4033ORELAP Page 5 of 9 McCampbell Analytical, Inc. 1534 Willow Pass Rd Pittsburg, CA 94565-1701 (925) 252-9262 CHAIN-OF-CUSTODY RECORD Page Lab ID Matrix Collection Date Hold Requested Tests (See legend below) Report to: Cindy Aguirre P.O. Box 272 Santa Paula, CA 93061-0272 (805) 392-2027 FAX: PO: 05/02/2022 ClientSampID Project:CC 2281015 WorkOrder:2204H85 1 of 1 Date Logged: Date Received:04/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 FGL Environmental Bill to: Accounts Payable FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Requested TAT:5 days; ClientCode:FGLE Email:cindya@fglinc.com EDF EQuIS Email HardCopy ThirdParty Excel J-flagCLIP cc/3rd Party:loginsp@fglinc.com; WaterTrax Detection Summary Dry-Weight A2204H85-001 Soil 3/23/2022 15:53B-21-45 Depth A A2204H85-002 Soil 3/23/2022 16:02B-21-52 Depth A Prepared by: Lilly Ortiz NOTE: Soil samples are discarded 60 days after receipt unless other arrangements are made (Water samples are 30 days). Hazardous samples will be returned to client or disposed of at client expense. Comments:Received 002 5/4/22 cnsTOC_S PRDisposal Fee12 3 4 5 6 7 8 9 10 Test Legend: 11 12 Page 6 of 9 LabID ClientSampID Collection Date & Time Date Logged: TATMatrixTest Name Containers /Composites WORK ORDER SUMMARY Work Order:2204H85 Comments Received 002 5/4/22 Client Name:FGL ENVIRONMENTAL Project:CC 2281015 QC Level:LEVEL 2 HoldDry- Weight Sub Out Bottle & Preservative 5/2/2022 Sediment Content EDF EQuIS Email HardCopy ThirdPartyExcel J-flagWriteOn Cindy AguirreClient Contact: cindya@fglinc.comContact's Email: WaterTrax Test Due DateHead Space U** McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" 001A B-21-45 Depth 3/23/2022 15:53 5 daysSoilSW9060A (TOC)1 8OZ GJ, Unpres 5/6/2022 002A B-21-52 Depth 3/23/2022 16:02 5 daysSoilSW9060A (TOC)1 8OZ GJ, Unpres 5/6/2022 1 of 1Page * STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission). NOTES: - MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client. U** = An unpreserved container was received for a method that suggests a preservation in order to extend hold time for analysis. Page 7 of 9 Page 8 of 9 Sample Receipt Checklist McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client Name:FGL Environmental WorkOrder №:2204H85 Date Logged:5/2/2022 Logged by:Lilly OrtizMatrix:Soil Carrier:Golden State Overnight Shipping container/cooler in good condition?Yes No Custody seals intact on shipping container/cooler?Yes No NA Samples Received on Ice?Yes No Chain of custody present?Yes No Chain of custody signed when relinquished and received?Yes No Chain of custody agrees with sample labels?Yes No Samples in proper containers/bottles?Yes No Sample containers intact?Yes No Sufficient sample volume for indicated test?Yes No NAAll samples received within holding time?Yes No NASample/Temp Blank temperature Yes No NAZHS conditional analyses: VOA meets zero headspace requirement (VOCs, TPHg/BTEX, RSK)? pH acceptable upon receipt (Metal: <2; Nitrate 353.2/4500NO3: <2; 522: <4; 218.7: >8)? Yes No NA Temp:3.2°C Chain of Custody (COC) Information Yes NoSample IDs noted by Client on COC? Yes NoDate and Time of collection noted by Client on COC? Yes NoSampler's name noted on COC? Sample Receipt Information Sample Preservation and Hold Time (HT) Information Sample labels checked for correct preservation?Yes No Project:CC 2281015 (Ice Type:WET ICE ) Comments: Sample B-21-52 Depth was not received. pH tested and acceptable upon receipt (200.7: ≤2; 533: 6 - 8; 537.1: 6 - 8)? Yes No NA UCMR Samples: Free Chlorine tested and acceptable upon receipt (<0.1mg/L) [not applicable to 200.7]? Yes No NA Date and Time Received:4/29/2022 09:34 Received by:Lilly Ortiz COC agrees with Quote?Yes No NA Custody seals intact on sample bottles?Yes No NA Page 9 of 9 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists May 9, 2022 Water Systems Consulting, Inc. Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Subject: Subcontract Analysis for FGL Lab No. CC 2281121 Enclosed please find results for the following sample(s) which were received by FGL. Sub Organic-TOC_Soill Please note that this analysis was performed by McCampbell Analytical, Inc. (ELAP Certified Laboratory) Thank you for using FGL Environmental. Sincerely, Cindy Aguirre Digitally signed by Cindy Aguirre Title: Customer Service Rep Date: 2022-05-09 Enclosure WorkOrder: Report Created for:FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Project Contact:Cindy Aguirre Project:CC 2281121 Project P.O.: Project Received:04/29/2022 Analytical Report reviewed & approved for release on 05/05/2022 by: Christine Askari 2204H83 The report shall not be reproduced except in full, without the written approval of the laboratory. The analytical results relate only to the items tested. Results reported conform to the most current NELAP standards, where applicable, unless otherwise stated in a case narrative. Analytical Report 1534 Willow Pass Rd. Pittsburg, CA 94565 ♦ TEL: (877) 252-9262 ♦ FAX: (925) 252-9269 ♦ www.mccampbell.com CA ELAP 1644 ♦ NELAP 4033 ORELAP Project Manager McCampbell Analytical, Inc. "When Quality Counts" Page 1 of 8 Glossary of Terms & Qualifier Definitions Client:FGL Environmental Project:CC 2281121 WorkOrder:2204H83 McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Glossary Abbreviation %D Serial Dilution Percent Difference 95% Interval 95% Confident Interval CPT Consumer Product Testing not NELAP Accredited DF Dilution Factor DI WET (DISTLC) Waste Extraction Test using DI water DISS Dissolved (direct analysis of 0.45 µm filtered and acidified water sample) DLT Dilution Test (Serial Dilution) DUP Duplicate EDL Estimated Detection Limit ERS External reference sample. Second source calibration verification. ITEF International Toxicity Equivalence Factor LCS Laboratory Control Sample LQL Lowest Quantitation Level MB Method Blank MB % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit ML Minimum Level of Quantitation MS Matrix Spike MSD Matrix Spike Duplicate NA Not Applicable ND Not detected at or above the indicated MDL or RL NR Data Not Reported due to matrix interference or insufficient sample amount. PDS Post Digestion Spike PDSD Post Digestion Spike Duplicate PF Prep Factor RD Relative Difference RL Reporting Limit (The RL is the lowest calibration standard in a multipoint calibration.) RPD Relative Percent Deviation RRT Relative Retention Time SPK Val Spike Value SPKRef Val Spike Reference Value SPLP Synthetic Precipitation Leachate Procedure ST Sorbent Tube TCLP Toxicity Characteristic Leachate Procedure TEQ Toxicity Equivalents TZA TimeZone Net Adjustment for sample collected outside of MAI's UTC. WET (STLC)Waste Extraction Test (Soluble Threshold Limit Concentration) Page 2 of 8 Analytical Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2281121 Date Received:04/29/2022 9:34 Date Prepared:05/03/2022 WorkOrder:2204H83 Extraction Method:SW9060A Analytical Method:SW9060A Unit:mg/kg Total Organic Carbon (TOC) B-24-55 Depth 2204H83-001A Soil 03/31/2022 17:34 WC_CNS F050322-1_0928_16 244722 Analytes Result DF Date AnalyzedRL Client ID Lab ID Matrix Date Collected Instrument Batch ID TOC 360 200 1 05/03/2022 23:02 Analyst(s):DMA NELAP 4033ORELAP Page 3 of 8 Quality Control Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2281121 Date Analyzed:05/03/2022 Date Prepared:05/03/2022 WorkOrder:2204H83 BatchID:244722 Analytical Method:SW9060A Unit:mg/kg Sample ID:MB/LCS/LCSD-244722 Instrument:WC_CNS Matrix:Soil Extraction Method:SW9060A QC Summary Report for SW9060A Analyte MB Result MDL RL TOC ND 200 200 --- Analyte LCS Result LCSD Result SPK Val LCS %REC LCSD %REC LCS/LCSD Limits RPD RPD Limit TOC 8200 8200 8200 100 100 80-120 0.0497 20 NELAP 4033ORELAP Page 4 of 8 McCampbell Analytical, Inc. 1534 Willow Pass Rd Pittsburg, CA 94565-1701 (925) 252-9262 CHAIN-OF-CUSTODY RECORD Page Lab ID Matrix Collection Date Hold Requested Tests (See legend below) Report to: Cindy Aguirre P.O. Box 272 Santa Paula, CA 93061-0272 (805) 392-2027 FAX: PO: 05/02/2022 ClientSampID Project:CC 2281121 WorkOrder:2204H83 1 of 1 Date Logged: Date Received:04/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 FGL Environmental Bill to: Accounts Payable FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Requested TAT:5 days; ClientCode:FGLE Email:cindya@fglinc.com EDF EQuIS Email HardCopy ThirdParty Excel J-flagCLIP cc/3rd Party: WaterTrax Detection Summary Dry-Weight A2204H83-001 Soil 3/31/2022 17:34B-24-55 Depth A Prepared by: Lilly Ortiz NOTE: Soil samples are discarded 60 days after receipt unless other arrangements are made (Water samples are 30 days). Hazardous samples will be returned to client or disposed of at client expense. Comments: cnsTOC_S PRDisposal Fee12 3 4 5 6 7 8 9 10 Test Legend: 11 12 Page 5 of 8 LabID ClientSampID Collection Date & Time Date Logged: TATMatrixTest Name Containers /Composites WORK ORDER SUMMARY Work Order:2204H83 Comments Client Name:FGL ENVIRONMENTAL Project:CC 2281121 QC Level:LEVEL 2 HoldDry- Weight Sub Out Bottle & Preservative 5/2/2022 Sediment Content EDF EQuIS Email HardCopy ThirdPartyExcel J-flagWriteOn Cindy AguirreClient Contact: cindya@fglinc.comContact's Email: WaterTrax Test Due DateHead Space U** McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" 001A B-24-55 Depth 3/31/2022 17:34 5 daysSoilSW9060A (TOC)1 8OZ GJ, Unpres 5/6/2022 1 of 1Page * STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission). NOTES: - MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client. U** = An unpreserved container was received for a method that suggests a preservation in order to extend hold time for analysis. Page 6 of 8 Page 7 of 8 Sample Receipt Checklist McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client Name:FGL Environmental WorkOrder №:2204H83 Date Logged:5/2/2022 Logged by:Lilly OrtizMatrix:Soil Carrier:Golden State Overnight Shipping container/cooler in good condition?Yes No Custody seals intact on shipping container/cooler?Yes No NA Samples Received on Ice?Yes No Chain of custody present?Yes No Chain of custody signed when relinquished and received?Yes No Chain of custody agrees with sample labels?Yes No Samples in proper containers/bottles?Yes No Sample containers intact?Yes No Sufficient sample volume for indicated test?Yes No NAAll samples received within holding time?Yes No NASample/Temp Blank temperature Yes No NAZHS conditional analyses: VOA meets zero headspace requirement (VOCs, TPHg/BTEX, RSK)? pH acceptable upon receipt (Metal: <2; Nitrate 353.2/4500NO3: <2; 522: <4; 218.7: >8)? Yes No NA Temp:3.2°C Chain of Custody (COC) Information Yes NoSample IDs noted by Client on COC? Yes NoDate and Time of collection noted by Client on COC? Yes NoSampler's name noted on COC? Sample Receipt Information Sample Preservation and Hold Time (HT) Information Sample labels checked for correct preservation?Yes No Project:CC 2281121 (Ice Type:WET ICE ) Comments: pH tested and acceptable upon receipt (200.7: ≤2; 533: 6 - 8; 537.1: 6 - 8)? Yes No NA UCMR Samples: Free Chlorine tested and acceptable upon receipt (<0.1mg/L) [not applicable to 200.7]? Yes No NA Date and Time Received:4/29/2022 09:34 Received by:Lilly Ortiz COC agrees with Quote?Yes No NA Custody seals intact on sample bottles?Yes No NA Page 8 of 8 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists May 9, 2022 Water Systems Consulting, Inc. Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Subject: Subcontract Analysis for FGL Lab No. CC 2280851 Enclosed please find results for the following sample(s) which were received by FGL. Sub Organic-TOC_Soill Please note that this analysis was performed by McCampbell Analytical, Inc. (ELAP Certified Laboratory) Thank you for using FGL Environmental. Sincerely, Cindy Aguirre Digitally signed by Cindy Aguirre Title: Customer Service Rep Date: 2022-05-09 Enclosure WorkOrder: Report Created for:FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Project Contact:Cindy Aguirre Project:CC 2280851 Project P.O.: Project Received:04/29/2022 Analytical Report reviewed & approved for release on 05/05/2022 by: Christine Askari 2204H79 The report shall not be reproduced except in full, without the written approval of the laboratory. The analytical results relate only to the items tested. Results reported conform to the most current NELAP standards, where applicable, unless otherwise stated in a case narrative. Analytical Report 1534 Willow Pass Rd. Pittsburg, CA 94565 ♦ TEL: (877) 252-9262 ♦ FAX: (925) 252-9269 ♦ www.mccampbell.com CA ELAP 1644 ♦ NELAP 4033 ORELAP Project Manager McCampbell Analytical, Inc. "When Quality Counts" Page 1 of 8 Glossary of Terms & Qualifier Definitions Client:FGL Environmental Project:CC 2280851 WorkOrder:2204H79 McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Glossary Abbreviation %D Serial Dilution Percent Difference 95% Interval 95% Confident Interval CPT Consumer Product Testing not NELAP Accredited DF Dilution Factor DI WET (DISTLC) Waste Extraction Test using DI water DISS Dissolved (direct analysis of 0.45 µm filtered and acidified water sample) DLT Dilution Test (Serial Dilution) DUP Duplicate EDL Estimated Detection Limit ERS External reference sample. Second source calibration verification. ITEF International Toxicity Equivalence Factor LCS Laboratory Control Sample LQL Lowest Quantitation Level MB Method Blank MB % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit ML Minimum Level of Quantitation MS Matrix Spike MSD Matrix Spike Duplicate NA Not Applicable ND Not detected at or above the indicated MDL or RL NR Data Not Reported due to matrix interference or insufficient sample amount. PDS Post Digestion Spike PDSD Post Digestion Spike Duplicate PF Prep Factor RD Relative Difference RL Reporting Limit (The RL is the lowest calibration standard in a multipoint calibration.) RPD Relative Percent Deviation RRT Relative Retention Time SPK Val Spike Value SPKRef Val Spike Reference Value SPLP Synthetic Precipitation Leachate Procedure ST Sorbent Tube TCLP Toxicity Characteristic Leachate Procedure TEQ Toxicity Equivalents TZA TimeZone Net Adjustment for sample collected outside of MAI's UTC. WET (STLC)Waste Extraction Test (Soluble Threshold Limit Concentration) Page 2 of 8 Analytical Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2280851 Date Received:04/29/2022 9:34 Date Prepared:05/03/2022 WorkOrder:2204H79 Extraction Method:SW9060A Analytical Method:SW9060A Unit:mg/kg Total Organic Carbon (TOC) B-29-_71_Depth 2204H79-001A Soil 03/09/2022 12:44 WC_CNS F050322-1_0928_12 244722 Analytes Result DF Date AnalyzedRL Client ID Lab ID Matrix Date Collected Instrument Batch ID TOC 330 200 1 05/03/2022 22:12 Analyst(s):DMA NELAP 4033ORELAP Page 3 of 8 Quality Control Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2280851 Date Analyzed:05/03/2022 Date Prepared:05/03/2022 WorkOrder:2204H79 BatchID:244722 Analytical Method:SW9060A Unit:mg/kg Sample ID:MB/LCS/LCSD-244722 Instrument:WC_CNS Matrix:Soil Extraction Method:SW9060A QC Summary Report for SW9060A Analyte MB Result MDL RL TOC ND 200 200 --- Analyte LCS Result LCSD Result SPK Val LCS %REC LCSD %REC LCS/LCSD Limits RPD RPD Limit TOC 8200 8200 8200 100 100 80-120 0.0497 20 NELAP 4033ORELAP Page 4 of 8 McCampbell Analytical, Inc. 1534 Willow Pass Rd Pittsburg, CA 94565-1701 (925) 252-9262 CHAIN-OF-CUSTODY RECORD Page Lab ID Matrix Collection Date Hold Requested Tests (See legend below) Report to: Cindy Aguirre P.O. Box 272 Santa Paula, CA 93061-0272 (805) 392-2000 FAX: PO: 05/02/2022 ClientSampID Project:CC 2280851 WorkOrder:2204H79 1 of 1 Date Logged: Date Received:04/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 FGL Environmental Bill to: Accounts Payable FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Requested TAT:5 days; ClientCode:FGLE Email:cindya@fglinc.com EDF EQuIS Email HardCopy ThirdParty Excel J-flagCLIP cc/3rd Party: WaterTrax Detection Summary Dry-Weight A2204H79-001 Soil 3/9/2022 12:44B-29-_71_Depth A Prepared by: Lilly Ortiz NOTE: Soil samples are discarded 60 days after receipt unless other arrangements are made (Water samples are 30 days). Hazardous samples will be returned to client or disposed of at client expense. Comments: cnsTOC_S PRDisposal Fee12 3 4 5 6 7 8 9 10 Test Legend: 11 12 Page 5 of 8 LabID ClientSampID Collection Date & Time Date Logged: TATMatrixTest Name Containers /Composites WORK ORDER SUMMARY Work Order:2204H79 Comments Client Name:FGL ENVIRONMENTAL Project:CC 2280851 QC Level:LEVEL 2 HoldDry- Weight Sub Out Bottle & Preservative 5/2/2022 Sediment Content EDF EQuIS Email HardCopy ThirdPartyExcel J-flagWriteOn Cindy AguirreClient Contact: cindya@fglinc.comContact's Email: WaterTrax Test Due DateHead Space U** McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" 001A B-29-_71_Depth 3/9/2022 12:44 5 daysSoilSW9060A (TOC)1 8OZ GJ, Unpres 5/6/2022 1 of 1Page * STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission). NOTES: - MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client. U** = An unpreserved container was received for a method that suggests a preservation in order to extend hold time for analysis. Page 6 of 8 Page 7 of 8 Sample Receipt Checklist McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client Name:FGL Environmental WorkOrder №:2204H79 Date Logged:5/2/2022 Logged by:Lilly OrtizMatrix:Soil Carrier:Golden State Overnight Shipping container/cooler in good condition?Yes No Custody seals intact on shipping container/cooler?Yes No NA Samples Received on Ice?Yes No Chain of custody present?Yes No Chain of custody signed when relinquished and received?Yes No Chain of custody agrees with sample labels?Yes No Samples in proper containers/bottles?Yes No Sample containers intact?Yes No Sufficient sample volume for indicated test?Yes No NAAll samples received within holding time?Yes No NASample/Temp Blank temperature Yes No NAZHS conditional analyses: VOA meets zero headspace requirement (VOCs, TPHg/BTEX, RSK)? pH acceptable upon receipt (Metal: <2; Nitrate 353.2/4500NO3: <2; 522: <4; 218.7: >8)? Yes No NA Temp:3.2°C Chain of Custody (COC) Information Yes NoSample IDs noted by Client on COC? Yes NoDate and Time of collection noted by Client on COC? Yes NoSampler's name noted on COC? Sample Receipt Information Sample Preservation and Hold Time (HT) Information Sample labels checked for correct preservation?Yes No Project:CC 2280851 (Ice Type:WET ICE ) Comments: pH tested and acceptable upon receipt (200.7: ≤2; 533: 6 - 8; 537.1: 6 - 8)? Yes No NA UCMR Samples: Free Chlorine tested and acceptable upon receipt (<0.1mg/L) [not applicable to 200.7]? Yes No NA Date and Time Received:4/29/2022 09:34 Received by:Lilly Ortiz COC agrees with Quote?Yes No NA Custody seals intact on sample bottles?Yes No NA Page 8 of 8 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists May 10, 2022 Water Systems Consulting, Inc. Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Subject: Subcontract Analysis for FGL Lab No. CC 2280920 Enclosed please find results for the following sample(s) which were received by FGL. Sub Organic-TOC_Soill Please note that this analysis was performed by McCampbell Analytical, Inc. (ELAP Certified Laboratory) Thank you for using FGL Environmental. Sincerely, Cindy Aguirre Digitally signed by Cindy Aguirre Title: Customer Service Rep Date: 2022-05-10 Enclosure WorkOrder: Report Created for:FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Project Contact:Cindy Aguirre Project:CC 2280920 Project P.O.: Project Received:04/29/2022 Analytical Report reviewed & approved for release on 05/06/2022 by: Yen Cao 2204J12 The report shall not be reproduced except in full, without the written approval of the laboratory. The analytical results relate only to the items tested. Results reported conform to the most current NELAP standards, where applicable, unless otherwise stated in a case narrative. Analytical Report 1534 Willow Pass Rd. Pittsburg, CA 94565 ♦ TEL: (877) 252-9262 ♦ FAX: (925) 252-9269 ♦ www.mccampbell.com CA ELAP 1644 ♦ NELAP 4033 ORELAP Project Manager McCampbell Analytical, Inc. "When Quality Counts" Page 1 of 8 Glossary of Terms & Qualifier Definitions Client:FGL Environmental Project:CC 2280920 WorkOrder:2204J12 McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Glossary Abbreviation %D Serial Dilution Percent Difference 95% Interval 95% Confident Interval CPT Consumer Product Testing not NELAP Accredited DF Dilution Factor DI WET (DISTLC) Waste Extraction Test using DI water DISS Dissolved (direct analysis of 0.45 µm filtered and acidified water sample) DLT Dilution Test (Serial Dilution) DUP Duplicate EDL Estimated Detection Limit ERS External reference sample. Second source calibration verification. ITEF International Toxicity Equivalence Factor LCS Laboratory Control Sample LQL Lowest Quantitation Level MB Method Blank MB % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit ML Minimum Level of Quantitation MS Matrix Spike MSD Matrix Spike Duplicate NA Not Applicable ND Not detected at or above the indicated MDL or RL NR Data Not Reported due to matrix interference or insufficient sample amount. PDS Post Digestion Spike PDSD Post Digestion Spike Duplicate PF Prep Factor RD Relative Difference RL Reporting Limit (The RL is the lowest calibration standard in a multipoint calibration.) RPD Relative Percent Deviation RRT Relative Retention Time SPK Val Spike Value SPKRef Val Spike Reference Value SPLP Synthetic Precipitation Leachate Procedure ST Sorbent Tube TCLP Toxicity Characteristic Leachate Procedure TEQ Toxicity Equivalents TZA TimeZone Net Adjustment for sample collected outside of MAI's UTC. WET (STLC)Waste Extraction Test (Soluble Threshold Limit Concentration) Page 2 of 8 Analytical Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2280920 Date Received:04/29/2022 9:34 Date Prepared:05/04/2022 WorkOrder:2204J12 Extraction Method:SW9060A Analytical Method:SW9060A Unit:mg/kg Total Organic Carbon (TOC) B-32-47 Depth 2204J12-001A Soil 03/14/2022 17:04 WC_CNS F050422-1_0953_15 244795 Analytes Result DF Date AnalyzedRL Client ID Lab ID Matrix Date Collected Instrument Batch ID TOC 1800 320 1 05/04/2022 19:33 Analyst(s):DMA B-32-60 Depth 2204J12-002A Soil 03/14/2022 17:04 WC_CNS F050422-1_0953_16 244795 Analytes Result DF Date AnalyzedRL Client ID Lab ID Matrix Date Collected Instrument Batch ID TOC 620 200 1 05/04/2022 19:44 Analyst(s):DMA NELAP 4033ORELAP Page 3 of 8 Quality Control Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2280920 Date Analyzed:05/04/2022 Date Prepared:05/04/2022 WorkOrder:2204J12 BatchID:244795 Analytical Method:SW9060A Unit:mg/kg Sample ID:MB/LCS/LCSD-244795 Instrument:WC_CNS Matrix:Soil Extraction Method:SW9060A QC Summary Report for SW9060A Analyte MB Result MDL RL TOC ND 200 200 --- Analyte LCS Result LCSD Result SPK Val LCS %REC LCSD %REC LCS/LCSD Limits RPD RPD Limit TOC 8200 8200 8200 100 100 80-120 0.185 20 NELAP 4033ORELAP Page 4 of 8 McCampbell Analytical, Inc. 1534 Willow Pass Rd Pittsburg, CA 94565-1701 (925) 252-9262 CHAIN-OF-CUSTODY RECORD Page Lab ID Matrix Collection Date Hold Requested Tests (See legend below) Report to: Cindy Aguirre P.O. Box 272 Santa Paula, CA 93061-0272 (805) 392-2027 FAX: PO: 05/02/2022 ClientSampID Project:CC 2280920 WorkOrder:2204J12 1 of 1 Date Logged: Date Received:04/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 FGL Environmental Bill to: Accounts Payable FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Requested TAT:5 days; ClientCode:FGLE Email:cindya@fglinc.com EDF EQuIS Email HardCopy ThirdParty Excel J-flagCLIP cc/3rd Party: WaterTrax Detection Summary Dry-Weight A2204J12-001 Soil 3/14/2022 17:04B-32-47 Depth A A2204J12-002 Soil 3/14/2022 17:04B-32-60 Depth A Prepared by: Lilly Ortiz NOTE: Soil samples are discarded 60 days after receipt unless other arrangements are made (Water samples are 30 days). Hazardous samples will be returned to client or disposed of at client expense. Comments: cnsTOC_S PRDisposal Fee12 3 4 5 6 7 8 9 10 Test Legend: 11 12 Page 5 of 8 LabID ClientSampID Collection Date & Time Date Logged: TATMatrixTest Name Containers /Composites WORK ORDER SUMMARY Work Order:2204J12 Comments Client Name:FGL ENVIRONMENTAL Project:CC 2280920 QC Level:LEVEL 2 HoldDry- Weight Sub Out Bottle & Preservative 5/2/2022 Sediment Content EDF EQuIS Email HardCopy ThirdPartyExcel J-flagWriteOn Cindy AguirreClient Contact: cindya@fglinc.comContact's Email: WaterTrax Test Due DateHead Space U** McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" 001A B-32-47 Depth 3/14/2022 17:04 5 daysSoilSW9060A (TOC)1 8OZ GJ, Unpres 5/6/2022 002A B-32-60 Depth 3/14/2022 17:04 5 daysSoilSW9060A (TOC)1 8OZ GJ, Unpres 5/6/2022 1 of 1Page * STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission). NOTES: - MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client. U** = An unpreserved container was received for a method that suggests a preservation in order to extend hold time for analysis. Page 6 of 8 Page 7 of 8 Sample Receipt Checklist McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client Name:FGL Environmental WorkOrder №:2204J12 Date Logged:5/2/2022 Logged by:Lilly OrtizMatrix:Soil Carrier:Golden State Overnight Shipping container/cooler in good condition?Yes No Custody seals intact on shipping container/cooler?Yes No NA Samples Received on Ice?Yes No Chain of custody present?Yes No Chain of custody signed when relinquished and received?Yes No Chain of custody agrees with sample labels?Yes No Samples in proper containers/bottles?Yes No Sample containers intact?Yes No Sufficient sample volume for indicated test?Yes No NAAll samples received within holding time?Yes No NASample/Temp Blank temperature Yes No NAZHS conditional analyses: VOA meets zero headspace requirement (VOCs, TPHg/BTEX, RSK)? pH acceptable upon receipt (Metal: <2; Nitrate 353.2/4500NO3: <2; 522: <4; 218.7: >8)? Yes No NA Temp:3.2°C Chain of Custody (COC) Information Yes NoSample IDs noted by Client on COC? Yes NoDate and Time of collection noted by Client on COC? Yes NoSampler's name noted on COC? Sample Receipt Information Sample Preservation and Hold Time (HT) Information Sample labels checked for correct preservation?Yes No Project:CC 2280920 (Ice Type:WET ICE ) Comments: pH tested and acceptable upon receipt (200.7: ≤2; 533: 6 - 8; 537.1: 6 - 8)? Yes No NA UCMR Samples: Free Chlorine tested and acceptable upon receipt (<0.1mg/L) [not applicable to 200.7]? Yes No NA Date and Time Received:4/29/2022 09:34 Received by:Lilly Ortiz COC agrees with Quote?Yes No NA Custody seals intact on sample bottles?Yes No NA Page 8 of 8 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists May 10, 2022 Water Systems Consulting, Inc. Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Subject: Subcontract Analysis for FGL Lab No. CC 2281095 Enclosed please find results for the following sample(s) which were received by FGL. Sub Organic-TOC_Soill Please note that this analysis was performed by McCampbell Analytical, Inc. (ELAP Certified Laboratory) Thank you for using FGL Environmental. Sincerely, Cindy Aguirre Digitally signed by Cindy Aguirre Title: Customer Service Rep Date: 2022-05-10 Enclosure WorkOrder: Report Created for:FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Project Contact:Cindy Aguirre Project:CC 2281095 Project P.O.: Project Received:04/29/2022 Analytical Report reviewed & approved for release on 05/06/2022 by: Yen Cao 2204H81 The report shall not be reproduced except in full, without the written approval of the laboratory. The analytical results relate only to the items tested. Results reported conform to the most current NELAP standards, where applicable, unless otherwise stated in a case narrative. Analytical Report 1534 Willow Pass Rd. Pittsburg, CA 94565 ♦ TEL: (877) 252-9262 ♦ FAX: (925) 252-9269 ♦ www.mccampbell.com CA ELAP 1644 ♦ NELAP 4033 ORELAP Project Manager McCampbell Analytical, Inc. "When Quality Counts" Page 1 of 8 Glossary of Terms & Qualifier Definitions Client:FGL Environmental Project:CC 2281095 WorkOrder:2204H81 McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Glossary Abbreviation %D Serial Dilution Percent Difference 95% Interval 95% Confident Interval CPT Consumer Product Testing not NELAP Accredited DF Dilution Factor DI WET (DISTLC) Waste Extraction Test using DI water DISS Dissolved (direct analysis of 0.45 µm filtered and acidified water sample) DLT Dilution Test (Serial Dilution) DUP Duplicate EDL Estimated Detection Limit ERS External reference sample. Second source calibration verification. ITEF International Toxicity Equivalence Factor LCS Laboratory Control Sample LQL Lowest Quantitation Level MB Method Blank MB % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit ML Minimum Level of Quantitation MS Matrix Spike MSD Matrix Spike Duplicate NA Not Applicable ND Not detected at or above the indicated MDL or RL NR Data Not Reported due to matrix interference or insufficient sample amount. PDS Post Digestion Spike PDSD Post Digestion Spike Duplicate PF Prep Factor RD Relative Difference RL Reporting Limit (The RL is the lowest calibration standard in a multipoint calibration.) RPD Relative Percent Deviation RRT Relative Retention Time SPK Val Spike Value SPKRef Val Spike Reference Value SPLP Synthetic Precipitation Leachate Procedure ST Sorbent Tube TCLP Toxicity Characteristic Leachate Procedure TEQ Toxicity Equivalents TZA TimeZone Net Adjustment for sample collected outside of MAI's UTC. WET (STLC)Waste Extraction Test (Soluble Threshold Limit Concentration) Page 2 of 8 Analytical Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2281095 Date Received:04/29/2022 9:34 Date Prepared:05/03/2022 WorkOrder:2204H81 Extraction Method:SW9060A Analytical Method:SW9060A Unit:mg/kg Total Organic Carbon (TOC) B-33-18 Depth 2204H81-001A Soil 03/29/2022 14:26 WC_CNS F050422-1_0953_25 244722 Analytes Result DF Date AnalyzedRL Client ID Lab ID Matrix Date Collected Instrument Batch ID TOC 18,000 480 1 05/04/2022 21:38 Analyst(s):DMA NELAP 4033ORELAP Page 3 of 8 Quality Control Report McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client:FGL Environmental Project:CC 2281095 Date Analyzed:05/03/2022 Date Prepared:05/03/2022 WorkOrder:2204H81 BatchID:244722 Analytical Method:SW9060A Unit:mg/kg Sample ID:MB/LCS/LCSD-244722 Instrument:WC_CNS Matrix:Soil Extraction Method:SW9060A QC Summary Report for SW9060A Analyte MB Result MDL RL TOC ND 200 200 --- Analyte LCS Result LCSD Result SPK Val LCS %REC LCSD %REC LCS/LCSD Limits RPD RPD Limit TOC 8200 8200 8200 100 100 80-120 0.0497 20 NELAP 4033ORELAP Page 4 of 8 McCampbell Analytical, Inc. 1534 Willow Pass Rd Pittsburg, CA 94565-1701 (925) 252-9262 CHAIN-OF-CUSTODY RECORD Page Lab ID Matrix Collection Date Hold Requested Tests (See legend below) Report to: Cindy Aguirre P.O. Box 272 Santa Paula, CA 93061-0272 (805) 392-2000 FAX: PO: 05/02/2022 ClientSampID Project:CC 2281095 WorkOrder:2204H81 1 of 1 Date Logged: Date Received:04/29/2022 1 2 3 4 5 6 7 8 9 10 11 12 FGL Environmental Bill to: Accounts Payable FGL Environmental P.O. Box 272 Santa Paula, CA 93061-0272 Requested TAT:5 days; ClientCode:FGLE Email:cindya@fglinc.com EDF EQuIS Email HardCopy ThirdParty Excel J-flagCLIP cc/3rd Party: WaterTrax Detection Summary Dry-Weight A2204H81-001 Soil 3/29/2022 14:26B-33-18 Depth A Prepared by: Lilly Ortiz NOTE: Soil samples are discarded 60 days after receipt unless other arrangements are made (Water samples are 30 days). Hazardous samples will be returned to client or disposed of at client expense. Comments: cnsTOC_S PRDisposal Fee12 3 4 5 6 7 8 9 10 Test Legend: 11 12 Page 5 of 8 LabID ClientSampID Collection Date & Time Date Logged: TATMatrixTest Name Containers /Composites WORK ORDER SUMMARY Work Order:2204H81 Comments Client Name:FGL ENVIRONMENTAL Project:CC 2281095 QC Level:LEVEL 2 HoldDry- Weight Sub Out Bottle & Preservative 5/2/2022 Sediment Content EDF EQuIS Email HardCopy ThirdPartyExcel J-flagWriteOn Cindy AguirreClient Contact: cindya@fglinc.comContact's Email: WaterTrax Test Due DateHead Space U** McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" 001A B-33-18 Depth 3/29/2022 14:26 5 daysSoilSW9060A (TOC)1 8OZ GJ, Unpres 5/6/2022 1 of 1Page * STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission). NOTES: - MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client. U** = An unpreserved container was received for a method that suggests a preservation in order to extend hold time for analysis. Page 6 of 8 Page 7 of 8 Sample Receipt Checklist McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: main@mccampbell.com"When Quality Counts" Client Name:FGL Environmental WorkOrder №:2204H81 Date Logged:5/2/2022 Logged by:Lilly OrtizMatrix:Soil Carrier:Golden State Overnight Shipping container/cooler in good condition?Yes No Custody seals intact on shipping container/cooler?Yes No NA Samples Received on Ice?Yes No Chain of custody present?Yes No Chain of custody signed when relinquished and received?Yes No Chain of custody agrees with sample labels?Yes No Samples in proper containers/bottles?Yes No Sample containers intact?Yes No Sufficient sample volume for indicated test?Yes No NAAll samples received within holding time?Yes No NASample/Temp Blank temperature Yes No NAZHS conditional analyses: VOA meets zero headspace requirement (VOCs, TPHg/BTEX, RSK)? pH acceptable upon receipt (Metal: <2; Nitrate 353.2/4500NO3: <2; 522: <4; 218.7: >8)? Yes No NA Temp:3.2°C Chain of Custody (COC) Information Yes NoSample IDs noted by Client on COC? Yes NoDate and Time of collection noted by Client on COC? Yes NoSampler's name noted on COC? Sample Receipt Information Sample Preservation and Hold Time (HT) Information Sample labels checked for correct preservation?Yes No Project:CC 2281095 (Ice Type:WET ICE ) Comments: pH tested and acceptable upon receipt (200.7: ≤2; 533: 6 - 8; 537.1: 6 - 8)? Yes No NA UCMR Samples: Free Chlorine tested and acceptable upon receipt (<0.1mg/L) [not applicable to 200.7]? Yes No NA Date and Time Received:4/29/2022 09:34 Received by:Lilly Ortiz COC agrees with Quote?Yes No NA Custody seals intact on sample bottles?Yes No NA Page 8 of 8 FGL Water Quality Lab Results from Exploratory Borings Remedial Investigation Report City of San Luis Obispo | M Appendix M FGL Water Quality Lab Results from Exploratory Borings M April 6, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280899 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 14 pages divided into 3 sections: Case Narrative (1 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-01-35 Depth 03/14/2022 03/14/2022 CC 2280899-001 GW B-01-44 Depth 03/14/2022 03/14/2022 CC 2280899-002 GW B-01-50 Depth 03/14/2022 03/14/2022 CC 2280899-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/17/2022:202979 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573). 8260B 03/17/2022:204013 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrolein, Acrylonitrile: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:MKHDigitial Signature Stamp Y = 09.5 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-06 Page 1 of 14 April 6, 2022 Lab ID : CC 2280899-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 14, 2022-14:40 Sampled By : Alex S Received On : March 14, 2022-16:21 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-01-35 Depth Project : SLO PCE B-01 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 103 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 104 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 103 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 90.9 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 2 of 14 April 6, 2022 Lab ID : CC 2280899-001 Description : B-01-35 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 3 of 14 April 6, 2022 Lab ID : CC 2280899-001 Description : B-01-35 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 4 of 14 April 6, 2022 Lab ID : CC 2280899-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 14, 2022-15:15 Sampled By : Alex S Received On : March 14, 2022-16:21 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-01-44 Depth Project : SLO PCE B-01 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 105 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 107 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 108 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 90.8 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 5 of 14 April 6, 2022 Lab ID : CC 2280899-002 Description : B-01-44 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 6 of 14 April 6, 2022 Lab ID : CC 2280899-002 Description : B-01-44 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 7 of 14 April 6, 2022 Lab ID : CC 2280899-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 14, 2022-15:40 Sampled By : Alex S Received On : March 14, 2022-16:21 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-01-50 Depth Project : SLO PCE B-01 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 104 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 111 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 96.3 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 88.6 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 8 of 14 April 6, 2022 Lab ID : CC 2280899-003 Description : B-01-50 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 9 of 14 April 6, 2022 Lab ID : CC 2280899-003 Description : B-01-50 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 10 of 14 This Page is to be Stamped April 6, 2022 Lab ID : CC 2280899 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 87.4 % 52-137 MS ug/L 25.00 94.1 % 25-179 (CC 2280698-002) MSD ug/L 25.00 91.7 % 25-179 MSRPD ug/L 25.00 2.6% ≤26 1,1-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/17/22:202979VRG Blank ug/L 25.00 98.5 % 84-126 LCS ug/L 25.00 97.1 % 84-126 MS ug/L 25.00 103 % 84-126 (CC 2280698-002) MSD ug/L 25.00 101 % 84-126 MSRPD ug/L 25.00 1.5% ≤20.0 1,2-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/17/22:202979VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/17/22:202979VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/17/22:202979VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/17/22:202979VRG Blank ug/L 25.00 103 % 78-125 LCS ug/L 25.00 98.9 % 78-125 MS ug/L 25.00 106 % 0-200 (CC 2280698-002) MSD ug/L 25.00 103 % 0-200 MSRPD ug/L 25.00 2.6% ≤20.0 4-Chlorotoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/17/22:202979VRG Blank ug/L ND <10 Acetone 5030B 03/17/22:202979VRG Blank ug/L ND <50 Acrolein 5030B 03/17/22:202979VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/17/22:202979VRG Blank ug/L ND <50 Benzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 89.2 % 60-134 MS ug/L 25.00 118 % 47-169 (CC 2280698-002) MSD ug/L 25.00 112 % 47-169 MSRPD ug/L 25.00 5.5% ≤24 Bromobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromoform 5030B 03/17/22:202979VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/17/22:202979VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 95.4 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 11 of 14 April 6, 2022 Lab ID : CC 2280899 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 118 % 31-212 (CC 2280698-002) MSD ug/L 25.00 120 % 31-212 MSRPD ug/L 25.00 1.3% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chloroform 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/17/22:202979VRG Blank ug/L 25.00 108 % 85-124 LCS ug/L 25.00 102 % 85-124 MS ug/L 25.00 99.8 % 85-124 (CC 2280698-002) MSD ug/L 25.00 101 % 85-124 MSRPD ug/L 25.00 1.3% ≤20.0 Dibromomethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/17/22:202979VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Freon-11 5030B 03/17/22:202979VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/17/22:202979VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/17/22:202979VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/17/22:202979VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Styrene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 TAME 5030B 03/17/22:202979VRG Blank ug/L ND <5 tert-Butanol 5030B 03/17/22:202979VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Toluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 80.1 % 56-131 MS ug/L 25.00 97.5 % 44-164 (CC 2280698-002) MSD ug/L 25.00 90.0 % 44-164 MSRPD ug/L 25.00 7.9% ≤30 Toluene-d8 5030B 03/17/22:202979VRG Blank ug/L 25.00 89.8 % 77-129 LCS ug/L 25.00 93.7 % 77-129 MS ug/L 25.00 96.0 % 77-129 (CC 2280698-002) MSD ug/L 25.00 93.0 % 77-129 MSRPD ug/L 25.00 3.2% ≤20 trans-1,2-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 94.1 % 61-123 MS ug/L 25.00 103 % 41-167 (CC 2280698-002) MSD ug/L 25.00 98.2 % 41-167 MSRPD ug/L 25.00 5.0% ≤32 Vinyl Acetate 5030B 03/17/22:202979VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/17/22:202979VRG Blank ug/L ND <2 Xylenes o 5030B 03/17/22:202979VRG Blank ug/L ND <2 Page 12 of 14 April 6, 2022 Lab ID : CC 2280899 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 94.6 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/17/22:204013VRG CCV ug/L 25.00 110 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.9 % 70-130 1,1,2-Trichloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 91.6 % 70-130 1,1-Dichloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 1,1-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 80-120 1,1-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 105 % 70-130 1,2,3-Trichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 191 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 143 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 1,2-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 1,2-Dichloroethane-d4 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.7 % 70-130 1,2-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 80-120 1,3,5-Trimethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 103 % 70-130 1,3-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.4 % 70-130 1,3-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 1,4-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 2,2-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 70-130 2-Butanone (MEK) 8260B 03/17/22:204013VRG CCV ug/L 100.0 107 % 50-150 2-Chloroethylvinyl ether 8260B 03/17/22:204013VRG CCV ug/L 100.0 106 % 50-150 2-Chlorotoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 2-Hexanone 8260B 03/17/22:204013VRG CCV ug/L 100.0 132 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/17/22:204013VRG CCV ug/L 25.00 96.7 % 70-130 4-Chlorotoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.3 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/17/22:204013VRG CCV ug/L 100.0 114 % 50-150 Acetone 8260B 03/17/22:204013VRG CCV ug/L 100.0 77.6 % 50-150 Acrolein 8260B 03/17/22:204013VRG CCV ug/L 100.0 208 % 50-150 360 Acrylonitrile 8260B 03/17/22:204013VRG CCV ug/L 100.0 256 % 50-150 360 Benzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 Bromobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 104 % 70-130 Bromochloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 100 % 70-130 Bromodichloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 93.6 % 70-130 Bromoform 8260B 03/17/22:204013VRG CCV ug/L 25.00 71.8 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/17/22:204013VRG CCV ug/L 25.00 73.8 % 70-130 Carbon Disulfide 8260B 03/17/22:204013VRG CCV ug/L 100.0 75.5 % 50-150 Carbon Tetrachloride 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 Chlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.6 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.6 % 70-130 Chloroform 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.2 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.9 % 70-130 cis-1,2-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 109 % 70-130 cis-1,3-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 70-130 Dibromochloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.3 % 70-130 Dibromofluromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.5 % 70-130 Dibromomethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.7 % 70-130 Dichlorodifluoromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 81.0 % 70-130 Dichloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 104 % 70-130 Ethyl tert-Butyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 50-150 Ethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 113 % 80-120 Hexachlorobutadiene 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 70-130 Isopropyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 118 % 50-150 Isopropylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.4 % 70-130 Page 13 of 14 April 6, 2022 Lab ID : CC 2280899 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 n-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 n-Propylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 70-130 p-Isopropyltoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.3 % 70-130 sec-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.0 % 70-130 Styrene 8260B 03/17/22:204013VRG CCV ug/L 25.00 108 % 70-130 TAME 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 50-150 tert-Butanol 8260B 03/17/22:204013VRG CCV ug/L 125.0 97.9 % 50-150 tert-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.1 % 70-130 Tetrachloroethylene (PCE) 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.3 % 70-130 Toluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 95.8 % 80-120 Toluene-d8 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.9 % 70-130 trans-1,2-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 111 % 70-130 trans-1,3-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 108 % 70-130 Trichloroethylene (TCE) 8260B 03/17/22:204013VRG CCV ug/L 25.00 103 % 70-130 Trichlorofluoromethane F-11 8260B 03/17/22:204013VRG CCV ug/L 25.00 76.8 % 70-130 Vinyl Acetate 8260B 03/17/22:204013VRG CCV ug/L 100.0 125 % 50-150 Vinyl Chloride 8260B 03/17/22:204013VRG CCV ug/L 25.00 89.7 % 80-120 Xylene m,p 8260B 03/17/22:204013VRG CCV ug/L 50.00 105 % 70-130 Xylenes o 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 14 of 14 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280981 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 12 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (6 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-02-41 Depth 03/21/2022 03/22/2022 CC 2280981-001 GW B-02-50 Depth 03/21/2022 03/22/2022 CC 2280981-002 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/31/2022:203560 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to 1,2,3-Trichlorobenzene: 210 The method blank was positive. However, samples reported were either ten times greater than the blank concentration or non detect and accepted. 8260B 03/31/2022:204863 All analysis quality controls are within established criteria, except: The following note applies to 1,1-Dichloroethane, 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrylonitrile, Hexachlorobutadiene, Isopropyl Ether,: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Discussion of Analytical Results: - Case Narrative - 04/13/22 - Due to the sample matrix for sample ID, B-02- 50 Depth, the preservative did not bring the pH to 2 pH units as required by the method. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 12 April 13, 2022 Lab ID : CC 2280981 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 12 April 13, 2022 Lab ID : CC 2280981-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 21, 2022-10:44 Sampled By : Danny O Received On : March 22, 2022-12:03 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-02-41 Depth Project : SLO PCE B-02 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 91.4 78-125 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromofluoromethane‡ 101 85-124 % 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane-d4‡ 106 84-126 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene-d8‡ 71.3 77-129 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Acetone ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrolein ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrylonitrile ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Benzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromochloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromodichloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromoform ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromomethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butanol ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Butanone (MEK) ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 sec-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Disulfide ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Tetrachloride ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroethane ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroform ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chlorotoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Chlorotoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromochloromethane ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromomethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 12 April 13, 2022 Lab ID : CC 2280981-001 Description : B-02-41 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl Benzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Hexachlorobutadiene ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Hexanone ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Isopropylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methylene Chloride ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Propylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Styrene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Tetrachloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichlorofluoromethane ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Acetate ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Chloride ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes m,p ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Page 4 of 12 April 13, 2022 Lab ID : CC 2280981-001 Description : B-02-41 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chloroethylvinylether ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 12 April 13, 2022 Lab ID : CC 2280981-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 21, 2022-11:10 Sampled By : Danny O Received On : March 22, 2022-12:03 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-02-50 Depth Project : SLO PCE B-02 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 98.9 78-125* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromofluoromethane‡ 91.4 85-124* % 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane-d4‡ 100 84-126* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene-d8‡ 89.4 77-129* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Acetone ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrolein ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrylonitrile ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromochloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromodichloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromoform ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butanol ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Butanone (MEK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 sec-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Disulfide ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Tetrachloride ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroform ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromochloromethane ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dichlorodifluoromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 12 April 13, 2022 Lab ID : CC 2280981-002 Description : B-02-50 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Hexachlorobutadiene ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Hexanone ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Isopropylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 p-Isopropyltoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methylene Chloride ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Propylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Styrene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Tetrachloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichlorofluoromethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Acetate ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Chloride ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes m,p ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Page 7 of 12 April 13, 2022 Lab ID : CC 2280981-002 Description : B-02-50 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chloroethylvinylether ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 12 This Page is to be Stamped April 13, 2022 Lab ID : CC 2280981 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 84.3 % 52-137 MS ug/L 25.00 86.6 % 25-179 (CC 2280962-001) MSD ug/L 25.00 83.2 % 25-179 MSRPD ug/L 0.000 4.0% ≤26 1,1-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L 15.5 10 210 1,2,4-Trichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/31/22:203560VRG Blank ug/L 25.00 123 % 84-126 LCS ug/L 25.00 110 % 84-126 MS ug/L 25.00 106 % 84-126 (CC 2280962-001) MSD ug/L 25.00 106 % 84-126 MSRPD ug/L 0.000 0.1% ≤20.0 1,2-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/31/22:203560VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/31/22:203560VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/31/22:203560VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/31/22:203560VRG Blank ug/L 25.00 103 % 78-125 LCS ug/L 25.00 95.5 % 78-125 MS ug/L 25.00 99.4 % 0-200 (CC 2280962-001) MSD ug/L 25.00 91.2 % 0-200 MSRPD ug/L 0.000 8.6% ≤20.0 4-Chlorotoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/31/22:203560VRG Blank ug/L ND <10 Acetone 5030B 03/31/22:203560VRG Blank ug/L ND <50 Acrolein 5030B 03/31/22:203560VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/31/22:203560VRG Blank ug/L ND <50 Benzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 128 % 60-134 MS ug/L 25.00 92.2 % 47-169 (CC 2280962-001) MSD ug/L 25.00 88.9 % 47-169 MSRPD ug/L 0.000 3.7% ≤24 Bromobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromoform 5030B 03/31/22:203560VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/31/22:203560VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 122 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 12 April 13, 2022 Lab ID : CC 2280981 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 103 % 31-212 (CC 2280962-001) MSD ug/L 25.00 101 % 31-212 MSRPD ug/L 0.000 2.2% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chloroform 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/31/22:203560VRG Blank ug/L 25.00 92.5 % 85-124 LCS ug/L 25.00 95.1 % 85-124 MS ug/L 25.00 99.5 % 85-124 (CC 2280962-001) MSD ug/L 25.00 98.4 % 85-124 MSRPD ug/L 0.000 1.1% ≤20.0 Dibromomethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/31/22:203560VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Freon-11 5030B 03/31/22:203560VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/31/22:203560VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/31/22:203560VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/31/22:203560VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Styrene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 TAME 5030B 03/31/22:203560VRG Blank ug/L ND <5 tert-Butanol 5030B 03/31/22:203560VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Toluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 86.4 % 56-131 MS ug/L 25.00 83.5 % 44-164 (CC 2280962-001) MSD ug/L 25.00 78.2 % 44-164 MSRPD ug/L 0.000 6.5% ≤30 Toluene-d8 5030B 03/31/22:203560VRG Blank ug/L 25.00 93.8 % 77-129 LCS ug/L 25.00 84.2 % 77-129 MS ug/L 25.00 94.2 % 77-129 (CC 2280962-001) MSD ug/L 25.00 95.2 % 77-129 MSRPD ug/L 0.000 1.1% ≤20 trans-1,2-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 113 % 61-123 MS ug/L 25.00 88.8 % 41-167 (CC 2280962-001) MSD ug/L 25.00 87.0 % 41-167 MSRPD ug/L 0.000 2.0% ≤32 Vinyl Acetate 5030B 03/31/22:203560VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/31/22:203560VRG Blank ug/L ND <2 Xylenes o 5030B 03/31/22:203560VRG Blank ug/L ND <2 Page 10 of 12 April 13, 2022 Lab ID : CC 2280981 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/31/22:204863VRG CCV ug/L 25.00 114 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 1,1,2-Trichloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 1,1-Dichloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 155 % 70-130 360 1,1-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 119 % 80-120 1,1-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 114 % 70-130 1,2,3-Trichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 554 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 260 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 1,2-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/31/22:204863VRG CCV ug/L 25.00 127 % 70-130 1,2-Dichloroethane-d4 8260B 03/31/22:204863VRG CCV ug/L 25.00 118 % 70-130 1,2-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.3 % 80-120 1,3,5-Trimethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 105 % 70-130 1,3-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.8 % 70-130 1,3-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 115 % 70-130 1,4-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 2,2-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 130 % 70-130 2-Butanone (MEK) 8260B 03/31/22:204863VRG CCV ug/L 100.0 91.6 % 50-150 2-Chloroethylvinyl ether 8260B 03/31/22:204863VRG CCV ug/L 100.0 113 % 50-150 2-Chlorotoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 118 % 70-130 2-Hexanone 8260B 03/31/22:204863VRG CCV ug/L 100.0 133 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/31/22:204863VRG CCV ug/L 25.00 93.9 % 70-130 4-Chlorotoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 106 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/31/22:204863VRG CCV ug/L 100.0 106 % 50-150 Acetone 8260B 03/31/22:204863VRG CCV ug/L 100.0 98.1 % 50-150 Acrolein 8260B 03/31/22:204863VRG CCV ug/L 100.0 139 % 50-150 Acrylonitrile 8260B 03/31/22:204863VRG CCV ug/L 100.0 164 % 50-150 360 Benzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 115 % 70-130 Bromobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 110 % 70-130 Bromochloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 97.1 % 70-130 Bromodichloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Bromoform 8260B 03/31/22:204863VRG CCV ug/L 25.00 82.6 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/31/22:204863VRG CCV ug/L 25.00 79.2 % 70-130 Carbon Disulfide 8260B 03/31/22:204863VRG CCV ug/L 100.0 67.4 % 50-150 Carbon Tetrachloride 8260B 03/31/22:204863VRG CCV ug/L 25.00 111 % 70-130 Chlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Chloroform 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/31/22:204863VRG CCV ug/L 25.00 89.4 % 70-130 cis-1,2-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 cis-1,3-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 117 % 70-130 Dibromochloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.7 % 70-130 Dibromofluromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 96.7 % 70-130 Dibromomethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Dichlorodifluoromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 84.9 % 70-130 Dichloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Ethyl tert-Butyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 147 % 50-150 Ethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 112 % 80-120 Hexachlorobutadiene 8260B 03/31/22:204863VRG CCV ug/L 25.00 187 % 70-130 360 Isopropyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 205 % 50-150 360 Isopropylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Page 11 of 12 April 13, 2022 Lab ID : CC 2280981 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 132 % 70-130 360 n-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 n-Propylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 101 % 70-130 p-Isopropyltoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 sec-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 97.7 % 70-130 Styrene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 TAME 8260B 03/31/22:204863VRG CCV ug/L 25.00 172 % 50-150 360 tert-Butanol 8260B 03/31/22:204863VRG CCV ug/L 125.0 125 % 50-150 tert-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Tetrachloroethylene (PCE) 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Toluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 80-120 Toluene-d8 8260B 03/31/22:204863VRG CCV ug/L 25.00 98.2 % 70-130 trans-1,2-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 116 % 70-130 trans-1,3-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 125 % 70-130 Trichloroethylene (TCE) 8260B 03/31/22:204863VRG CCV ug/L 25.00 117 % 70-130 Trichlorofluoromethane F-11 8260B 03/31/22:204863VRG CCV ug/L 25.00 70.1 % 70-130 Vinyl Acetate 8260B 03/31/22:204863VRG CCV ug/L 100.0 113 % 50-150 Vinyl Chloride 8260B 03/31/22:204863VRG CCV ug/L 25.00 90.5 % 80-120 Xylene m,p 8260B 03/31/22:204863VRG CCV ug/L 50.00 108 % 70-130 Xylenes o 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 210 : The method blank was positive. However, samples reported were either ten times greater than the blank concentration or non detect and accepted. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 12 of 12 April 6, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280909 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 11 pages divided into 3 sections: Case Narrative (1 pages) : An overview of the work performed at FGL. Sample Results (6 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-03- 42 Depth 03/15/2022 03/15/2022 CC 2280909-001 GW B-03- 48 Depth 03/15/2022 03/15/2022 CC 2280909-002 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/17/2022:202979 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573). 8260B 03/17/2022:204013 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrolein, Acrylonitrile: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:MKHDigitial Signature Stamp Y = 09.5 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-06 Page 1 of 11 April 6, 2022 Lab ID : CC 2280909-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 15, 2022-11:53 Sampled By : Alex S. Received On : March 15, 2022-14:06 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-03- 42 Depth Project : SLO PCE B-03 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 103 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 109 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 99.5 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 92.4 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 2 of 11 April 6, 2022 Lab ID : CC 2280909-001 Description : B-03- 42 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 3 of 11 April 6, 2022 Lab ID : CC 2280909-001 Description : B-03- 42 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 4 of 11 April 6, 2022 Lab ID : CC 2280909-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 15, 2022-12:18 Sampled By : Alex S. Received On : March 15, 2022-14:06 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-03- 48 Depth Project : SLO PCE B-03 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 101 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 105 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 97.1 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 94.4 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 5 of 11 April 6, 2022 Lab ID : CC 2280909-002 Description : B-03- 48 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 6 of 11 April 6, 2022 Lab ID : CC 2280909-002 Description : B-03- 48 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 7 of 11 This Page is to be Stamped April 6, 2022 Lab ID : CC 2280909 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 87.4 % 52-137 MS ug/L 25.00 94.1 % 25-179 (CC 2280698-002) MSD ug/L 25.00 91.7 % 25-179 MSRPD ug/L 25.00 2.6% ≤26 1,1-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/17/22:202979VRG Blank ug/L 25.00 98.5 % 84-126 LCS ug/L 25.00 97.1 % 84-126 MS ug/L 25.00 103 % 84-126 (CC 2280698-002) MSD ug/L 25.00 101 % 84-126 MSRPD ug/L 25.00 1.5% ≤20.0 1,2-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/17/22:202979VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/17/22:202979VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/17/22:202979VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/17/22:202979VRG Blank ug/L 25.00 103 % 78-125 LCS ug/L 25.00 98.9 % 78-125 MS ug/L 25.00 106 % 0-200 (CC 2280698-002) MSD ug/L 25.00 103 % 0-200 MSRPD ug/L 25.00 2.6% ≤20.0 4-Chlorotoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/17/22:202979VRG Blank ug/L ND <10 Acetone 5030B 03/17/22:202979VRG Blank ug/L ND <50 Acrolein 5030B 03/17/22:202979VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/17/22:202979VRG Blank ug/L ND <50 Benzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 89.2 % 60-134 MS ug/L 25.00 118 % 47-169 (CC 2280698-002) MSD ug/L 25.00 112 % 47-169 MSRPD ug/L 25.00 5.5% ≤24 Bromobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromoform 5030B 03/17/22:202979VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/17/22:202979VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 95.4 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 8 of 11 April 6, 2022 Lab ID : CC 2280909 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 118 % 31-212 (CC 2280698-002) MSD ug/L 25.00 120 % 31-212 MSRPD ug/L 25.00 1.3% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chloroform 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/17/22:202979VRG Blank ug/L 25.00 108 % 85-124 LCS ug/L 25.00 102 % 85-124 MS ug/L 25.00 99.8 % 85-124 (CC 2280698-002) MSD ug/L 25.00 101 % 85-124 MSRPD ug/L 25.00 1.3% ≤20.0 Dibromomethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/17/22:202979VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Freon-11 5030B 03/17/22:202979VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/17/22:202979VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/17/22:202979VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/17/22:202979VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Styrene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 TAME 5030B 03/17/22:202979VRG Blank ug/L ND <5 tert-Butanol 5030B 03/17/22:202979VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Toluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 80.1 % 56-131 MS ug/L 25.00 97.5 % 44-164 (CC 2280698-002) MSD ug/L 25.00 90.0 % 44-164 MSRPD ug/L 25.00 7.9% ≤30 Toluene-d8 5030B 03/17/22:202979VRG Blank ug/L 25.00 89.8 % 77-129 LCS ug/L 25.00 93.7 % 77-129 MS ug/L 25.00 96.0 % 77-129 (CC 2280698-002) MSD ug/L 25.00 93.0 % 77-129 MSRPD ug/L 25.00 3.2% ≤20 trans-1,2-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 94.1 % 61-123 MS ug/L 25.00 103 % 41-167 (CC 2280698-002) MSD ug/L 25.00 98.2 % 41-167 MSRPD ug/L 25.00 5.0% ≤32 Vinyl Acetate 5030B 03/17/22:202979VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/17/22:202979VRG Blank ug/L ND <2 Xylenes o 5030B 03/17/22:202979VRG Blank ug/L ND <2 Page 9 of 11 April 6, 2022 Lab ID : CC 2280909 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 94.6 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/17/22:204013VRG CCV ug/L 25.00 110 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.9 % 70-130 1,1,2-Trichloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 91.6 % 70-130 1,1-Dichloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 1,1-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 80-120 1,1-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 105 % 70-130 1,2,3-Trichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 191 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 143 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 1,2-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 1,2-Dichloroethane-d4 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.7 % 70-130 1,2-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 80-120 1,3,5-Trimethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 103 % 70-130 1,3-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.4 % 70-130 1,3-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 1,4-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 2,2-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 70-130 2-Butanone (MEK) 8260B 03/17/22:204013VRG CCV ug/L 100.0 107 % 50-150 2-Chloroethylvinyl ether 8260B 03/17/22:204013VRG CCV ug/L 100.0 106 % 50-150 2-Chlorotoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 2-Hexanone 8260B 03/17/22:204013VRG CCV ug/L 100.0 132 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/17/22:204013VRG CCV ug/L 25.00 96.7 % 70-130 4-Chlorotoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.3 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/17/22:204013VRG CCV ug/L 100.0 114 % 50-150 Acetone 8260B 03/17/22:204013VRG CCV ug/L 100.0 77.6 % 50-150 Acrolein 8260B 03/17/22:204013VRG CCV ug/L 100.0 208 % 50-150 360 Acrylonitrile 8260B 03/17/22:204013VRG CCV ug/L 100.0 256 % 50-150 360 Benzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 Bromobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 104 % 70-130 Bromochloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 100 % 70-130 Bromodichloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 93.6 % 70-130 Bromoform 8260B 03/17/22:204013VRG CCV ug/L 25.00 71.8 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/17/22:204013VRG CCV ug/L 25.00 73.8 % 70-130 Carbon Disulfide 8260B 03/17/22:204013VRG CCV ug/L 100.0 75.5 % 50-150 Carbon Tetrachloride 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 Chlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.6 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.6 % 70-130 Chloroform 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.2 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.9 % 70-130 cis-1,2-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 109 % 70-130 cis-1,3-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 70-130 Dibromochloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.3 % 70-130 Dibromofluromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.5 % 70-130 Dibromomethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.7 % 70-130 Dichlorodifluoromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 81.0 % 70-130 Dichloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 104 % 70-130 Ethyl tert-Butyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 50-150 Ethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 113 % 80-120 Hexachlorobutadiene 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 70-130 Isopropyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 118 % 50-150 Isopropylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.4 % 70-130 Page 10 of 11 April 6, 2022 Lab ID : CC 2280909 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 n-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 n-Propylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 70-130 p-Isopropyltoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.3 % 70-130 sec-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.0 % 70-130 Styrene 8260B 03/17/22:204013VRG CCV ug/L 25.00 108 % 70-130 TAME 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 50-150 tert-Butanol 8260B 03/17/22:204013VRG CCV ug/L 125.0 97.9 % 50-150 tert-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.1 % 70-130 Tetrachloroethylene (PCE) 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.3 % 70-130 Toluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 95.8 % 80-120 Toluene-d8 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.9 % 70-130 trans-1,2-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 111 % 70-130 trans-1,3-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 108 % 70-130 Trichloroethylene (TCE) 8260B 03/17/22:204013VRG CCV ug/L 25.00 103 % 70-130 Trichlorofluoromethane F-11 8260B 03/17/22:204013VRG CCV ug/L 25.00 76.8 % 70-130 Vinyl Acetate 8260B 03/17/22:204013VRG CCV ug/L 100.0 125 % 50-150 Vinyl Chloride 8260B 03/17/22:204013VRG CCV ug/L 25.00 89.7 % 80-120 Xylene m,p 8260B 03/17/22:204013VRG CCV ug/L 50.00 105 % 70-130 Xylenes o 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 11 of 11 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2281002 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-04-30 Depth 03/22/2022 03/23/2022 CC 2281002-001 GW B-04-41 Depth 03/22/2022 03/23/2022 CC 2281002-002 GW B-04-47 Depth 03/22/2022 03/23/2022 CC 2281002-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/31/2022:203560 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to 1,2,3-Trichlorobenzene: 210 The method blank was positive. However, samples reported were either ten times greater than the blank concentration or non detect and accepted. 8260B 04/01/2022:204863 All analysis quality controls are within established criteria, except: The following note applies to 1,1-Dichloroethane, 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrylonitrile, Hexachlorobutadiene, Isopropyl Ether,: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 13, 2022 Lab ID : CC 2281002 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 15 April 13, 2022 Lab ID : CC 2281002-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 22, 2022-09:17 Sampled By : Dan O. Received On : March 23, 2022-10:59 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-04-30 Depth Project : SLO PCE B-04 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 97.4 78-125* % 5030B 03/31/22:203560 8260B 04/01/22:204863 Dibromofluoromethane‡ 92.2 85-124* % 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichloroethane-d4‡ 91.3 84-126* % 5030B 03/31/22:203560 8260B 04/01/22:204863 Toluene-d8‡ 84.4 77-129* % 5030B 03/31/22:203560 8260B 04/01/22:204863 Acetone ND 100* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Acrolein ND 100* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Acrylonitrile ND 100* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromochloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromodichloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromoform ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 tert-Butanol ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Butanone (MEK) ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 n-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 sec-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 tert-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Carbon Disulfide ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Carbon Tetrachloride ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chloroethane ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chloroform ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 4-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Dibromochloromethane ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Dibromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Dichlorodifluoromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 13, 2022 Lab ID : CC 2281002-001 Description : B-04-30 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Ethyl Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Hexachlorobutadiene ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Hexanone ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Isopropylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 p-Isopropyltoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Methylene Chloride ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 n-Propylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Styrene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Tetrachloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Toluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Trichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Trichlorofluoromethane ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Vinyl Acetate ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Vinyl Chloride ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Xylenes m,p ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Page 4 of 15 April 13, 2022 Lab ID : CC 2281002-001 Description : B-04-30 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Chloroethylvinylether ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 13, 2022 Lab ID : CC 2281002-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 22, 2022-09:53 Sampled By : Dan O. Received On : March 23, 2022-10:59 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-04-41 Depth Project : SLO PCE B-04 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 98.2 78-125* % 5030B 03/31/22:203560 8260B 04/01/22:204863 Dibromofluoromethane‡ 100 85-124* % 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichloroethane-d4‡ 105 84-126* % 5030B 03/31/22:203560 8260B 04/01/22:204863 Toluene-d8‡ 87.4 77-129* % 5030B 03/31/22:203560 8260B 04/01/22:204863 Acetone ND 100* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Acrolein ND 100* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Acrylonitrile ND 100* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromochloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromodichloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromoform ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 tert-Butanol ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Butanone (MEK) ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 n-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 sec-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 tert-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Carbon Disulfide ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Carbon Tetrachloride ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chloroethane ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chloroform ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 4-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Dibromochloromethane ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Dibromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Dichlorodifluoromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 13, 2022 Lab ID : CC 2281002-002 Description : B-04-41 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Ethyl Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Hexachlorobutadiene ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Hexanone ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Isopropylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 p-Isopropyltoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Methylene Chloride ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 n-Propylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Styrene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Tetrachloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Toluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Trichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Trichlorofluoromethane ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Vinyl Acetate ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Vinyl Chloride ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Xylenes m,p ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Page 7 of 15 April 13, 2022 Lab ID : CC 2281002-002 Description : B-04-41 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Chloroethylvinylether ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 13, 2022 Lab ID : CC 2281002-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 22, 2022-10:31 Sampled By : Dan O. Received On : March 23, 2022-10:59 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-04-47 Depth Project : SLO PCE B-04 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 91.1 78-125* % 5030B 03/31/22:203560 8260B 04/01/22:204863 Dibromofluoromethane‡ 100 85-124* % 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichloroethane-d4‡ 108 84-126* % 5030B 03/31/22:203560 8260B 04/01/22:204863 Toluene-d8‡ 83.8 77-129* % 5030B 03/31/22:203560 8260B 04/01/22:204863 Acetone ND 100* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Acrolein ND 100* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Acrylonitrile ND 100* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromochloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromodichloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromoform ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Bromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 tert-Butanol ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Butanone (MEK) ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 n-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 sec-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 tert-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Carbon Disulfide ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Carbon Tetrachloride ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chloroethane ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chloroform ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Chloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 4-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Dibromochloromethane ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Dibromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Dichlorodifluoromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 13, 2022 Lab ID : CC 2281002-003 Description : B-04-47 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Ethyl Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Hexachlorobutadiene ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Hexanone ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Isopropylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 p-Isopropyltoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Methylene Chloride ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 n-Propylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Styrene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Tetrachloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Toluene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Trichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Trichlorofluoromethane ND 2* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Vinyl Acetate ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Vinyl Chloride ND 1* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Xylenes m,p ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 Page 10 of 15 April 13, 2022 Lab ID : CC 2281002-003 Description : B-04-47 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 2-Chloroethylvinylether ND 20* ug/L 5030B 03/31/22:203560 8260B 04/01/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 13, 2022 Lab ID : CC 2281002 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 84.3 % 52-137 MS ug/L 25.00 86.6 % 25-179 (CC 2280962-001) MSD ug/L 25.00 83.2 % 25-179 MSRPD ug/L 0.000 4.0% ≤26 1,1-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L 15.5 10 210 1,2,4-Trichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/31/22:203560VRG Blank ug/L 25.00 123 % 84-126 LCS ug/L 25.00 110 % 84-126 MS ug/L 25.00 106 % 84-126 (CC 2280962-001) MSD ug/L 25.00 106 % 84-126 MSRPD ug/L 0.000 0.1% ≤20.0 1,2-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/31/22:203560VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/31/22:203560VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/31/22:203560VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/31/22:203560VRG Blank ug/L 25.00 103 % 78-125 LCS ug/L 25.00 95.5 % 78-125 MS ug/L 25.00 99.4 % 0-200 (CC 2280962-001) MSD ug/L 25.00 91.2 % 0-200 MSRPD ug/L 0.000 8.6% ≤20.0 4-Chlorotoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/31/22:203560VRG Blank ug/L ND <10 Acetone 5030B 03/31/22:203560VRG Blank ug/L ND <50 Acrolein 5030B 03/31/22:203560VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/31/22:203560VRG Blank ug/L ND <50 Benzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 128 % 60-134 MS ug/L 25.00 92.2 % 47-169 (CC 2280962-001) MSD ug/L 25.00 88.9 % 47-169 MSRPD ug/L 0.000 3.7% ≤24 Bromobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromoform 5030B 03/31/22:203560VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/31/22:203560VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 122 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 13, 2022 Lab ID : CC 2281002 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 103 % 31-212 (CC 2280962-001) MSD ug/L 25.00 101 % 31-212 MSRPD ug/L 0.000 2.2% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chloroform 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/31/22:203560VRG Blank ug/L 25.00 92.5 % 85-124 LCS ug/L 25.00 95.1 % 85-124 MS ug/L 25.00 99.5 % 85-124 (CC 2280962-001) MSD ug/L 25.00 98.4 % 85-124 MSRPD ug/L 0.000 1.1% ≤20.0 Dibromomethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/31/22:203560VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Freon-11 5030B 03/31/22:203560VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/31/22:203560VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/31/22:203560VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/31/22:203560VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Styrene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 TAME 5030B 03/31/22:203560VRG Blank ug/L ND <5 tert-Butanol 5030B 03/31/22:203560VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Toluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 86.4 % 56-131 MS ug/L 25.00 83.5 % 44-164 (CC 2280962-001) MSD ug/L 25.00 78.2 % 44-164 MSRPD ug/L 0.000 6.5% ≤30 Toluene-d8 5030B 03/31/22:203560VRG Blank ug/L 25.00 93.8 % 77-129 LCS ug/L 25.00 84.2 % 77-129 MS ug/L 25.00 94.2 % 77-129 (CC 2280962-001) MSD ug/L 25.00 95.2 % 77-129 MSRPD ug/L 0.000 1.1% ≤20 trans-1,2-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 113 % 61-123 MS ug/L 25.00 88.8 % 41-167 (CC 2280962-001) MSD ug/L 25.00 87.0 % 41-167 MSRPD ug/L 0.000 2.0% ≤32 Vinyl Acetate 5030B 03/31/22:203560VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/31/22:203560VRG Blank ug/L ND <2 Xylenes o 5030B 03/31/22:203560VRG Blank ug/L ND <2 Page 13 of 15 April 13, 2022 Lab ID : CC 2281002 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 04/01/22:204863VRG CCV ug/L 25.00 103 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 04/01/22:204863VRG CCV ug/L 25.00 114 % 70-130 1,1,2,2-Tetrachloroethane 8260B 04/01/22:204863VRG CCV ug/L 25.00 103 % 70-130 1,1,2-Trichloroethane 8260B 04/01/22:204863VRG CCV ug/L 25.00 108 % 70-130 1,1-Dichloroethane 8260B 04/01/22:204863VRG CCV ug/L 25.00 155 % 70-130 360 1,1-Dichloroethylene 8260B 04/01/22:204863VRG CCV ug/L 25.00 119 % 80-120 1,1-Dichloropropene 8260B 04/01/22:204863VRG CCV ug/L 25.00 114 % 70-130 1,2,3-Trichlorobenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 554 % 70-130 360 1,2,4-Trichlorobenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 260 % 70-130 360 1,2,4-Trimethylbenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 104 % 70-130 1,2-Dichlorobenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 04/01/22:204863VRG CCV ug/L 25.00 127 % 70-130 1,2-Dichloroethane-d4 8260B 04/01/22:204863VRG CCV ug/L 25.00 118 % 70-130 1,2-Dichloropropane 8260B 04/01/22:204863VRG CCV ug/L 25.00 99.3 % 80-120 1,3,5-Trimethylbenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 105 % 70-130 1,3-Dichlorobenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 99.8 % 70-130 1,3-Dichloropropane 8260B 04/01/22:204863VRG CCV ug/L 25.00 115 % 70-130 1,4-Dichlorobenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 107 % 70-130 2,2-Dichloropropane 8260B 04/01/22:204863VRG CCV ug/L 25.00 130 % 70-130 2-Butanone (MEK) 8260B 04/01/22:204863VRG CCV ug/L 100.0 91.6 % 50-150 2-Chloroethylvinyl ether 8260B 04/01/22:204863VRG CCV ug/L 100.0 113 % 50-150 2-Chlorotoluene 8260B 04/01/22:204863VRG CCV ug/L 25.00 118 % 70-130 2-Hexanone 8260B 04/01/22:204863VRG CCV ug/L 100.0 133 % 50-150 4-Bromofluorobenzene (BFB) 8260B 04/01/22:204863VRG CCV ug/L 25.00 93.9 % 70-130 4-Chlorotoluene 8260B 04/01/22:204863VRG CCV ug/L 25.00 106 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 04/01/22:204863VRG CCV ug/L 100.0 106 % 50-150 Acetone 8260B 04/01/22:204863VRG CCV ug/L 100.0 98.1 % 50-150 Acrolein 8260B 04/01/22:204863VRG CCV ug/L 100.0 139 % 50-150 Acrylonitrile 8260B 04/01/22:204863VRG CCV ug/L 100.0 164 % 50-150 360 Benzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 115 % 70-130 Bromobenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 110 % 70-130 Bromochloromethane 8260B 04/01/22:204863VRG CCV ug/L 25.00 97.1 % 70-130 Bromodichloromethane 8260B 04/01/22:204863VRG CCV ug/L 25.00 102 % 70-130 Bromoform 8260B 04/01/22:204863VRG CCV ug/L 25.00 82.6 % 70-130 Bromomethane (Methyl Bromide) 8260B 04/01/22:204863VRG CCV ug/L 25.00 79.2 % 70-130 Carbon Disulfide 8260B 04/01/22:204863VRG CCV ug/L 100.0 67.4 % 50-150 Carbon Tetrachloride 8260B 04/01/22:204863VRG CCV ug/L 25.00 111 % 70-130 Chlorobenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 104 % 70-130 Chloroethane (Ethyl Chloride) 8260B 04/01/22:204863VRG CCV ug/L 25.00 102 % 70-130 Chloroform 8260B 04/01/22:204863VRG CCV ug/L 25.00 102 % 80-120 Chloromethane(Methyl Chloride) 8260B 04/01/22:204863VRG CCV ug/L 25.00 89.4 % 70-130 cis-1,2-Dichloroethylene 8260B 04/01/22:204863VRG CCV ug/L 25.00 107 % 70-130 cis-1,3-Dichloropropene 8260B 04/01/22:204863VRG CCV ug/L 25.00 117 % 70-130 Dibromochloromethane 8260B 04/01/22:204863VRG CCV ug/L 25.00 99.7 % 70-130 Dibromofluromethane 8260B 04/01/22:204863VRG CCV ug/L 25.00 96.7 % 70-130 Dibromomethane 8260B 04/01/22:204863VRG CCV ug/L 25.00 109 % 70-130 Dichlorodifluoromethane 8260B 04/01/22:204863VRG CCV ug/L 25.00 84.9 % 70-130 Dichloromethane 8260B 04/01/22:204863VRG CCV ug/L 25.00 109 % 70-130 Ethyl tert-Butyl Ether 8260B 04/01/22:204863VRG CCV ug/L 25.00 147 % 50-150 Ethylbenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 112 % 80-120 Hexachlorobutadiene 8260B 04/01/22:204863VRG CCV ug/L 25.00 187 % 70-130 360 Isopropyl Ether 8260B 04/01/22:204863VRG CCV ug/L 25.00 205 % 50-150 360 Isopropylbenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 102 % 70-130 Page 14 of 15 April 13, 2022 Lab ID : CC 2281002 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 04/01/22:204863VRG CCV ug/L 25.00 132 % 70-130 360 n-Butylbenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 108 % 70-130 n-Propylbenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 101 % 70-130 p-Isopropyltoluene 8260B 04/01/22:204863VRG CCV ug/L 25.00 103 % 70-130 sec-Butylbenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 97.7 % 70-130 Styrene 8260B 04/01/22:204863VRG CCV ug/L 25.00 107 % 70-130 TAME 8260B 04/01/22:204863VRG CCV ug/L 25.00 172 % 50-150 360 tert-Butanol 8260B 04/01/22:204863VRG CCV ug/L 125.0 125 % 50-150 tert-Butylbenzene 8260B 04/01/22:204863VRG CCV ug/L 25.00 102 % 70-130 Tetrachloroethylene (PCE) 8260B 04/01/22:204863VRG CCV ug/L 25.00 109 % 70-130 Toluene 8260B 04/01/22:204863VRG CCV ug/L 25.00 107 % 80-120 Toluene-d8 8260B 04/01/22:204863VRG CCV ug/L 25.00 98.2 % 70-130 trans-1,2-Dichloroethylene 8260B 04/01/22:204863VRG CCV ug/L 25.00 116 % 70-130 trans-1,3-Dichloropropene 8260B 04/01/22:204863VRG CCV ug/L 25.00 125 % 70-130 Trichloroethylene (TCE) 8260B 04/01/22:204863VRG CCV ug/L 25.00 117 % 70-130 Trichlorofluoromethane F-11 8260B 04/01/22:204863VRG CCV ug/L 25.00 70.1 % 70-130 Vinyl Acetate 8260B 04/01/22:204863VRG CCV ug/L 100.0 113 % 50-150 Vinyl Chloride 8260B 04/01/22:204863VRG CCV ug/L 25.00 90.5 % 80-120 Xylene m,p 8260B 04/01/22:204863VRG CCV ug/L 50.00 108 % 70-130 Xylenes o 8260B 04/01/22:204863VRG CCV ug/L 25.00 104 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 210 : The method blank was positive. However, samples reported were either ten times greater than the blank concentration or non detect and accepted. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 15 of 15 April 6, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280902 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 11 pages divided into 3 sections: Case Narrative (1 pages) : An overview of the work performed at FGL. Sample Results (6 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-05-33 Depth 03/14/2022 03/15/2022 CC 2280902-002 GW B-05- 52 Depth 03/14/2022 03/15/2022 CC 2280902-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/17/2022:202979 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573). 8260B 03/17/2022:204013 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrolein, Acrylonitrile: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:MKHDigitial Signature Stamp Y = 09.5 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-06 Page 1 of 11 April 6, 2022 Lab ID : CC 2280902-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 14, 2022-16:25 Sampled By : Dan O. Received On : March 15, 2022-11:09 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-05-33 Depth Project : SLO PCE B-05 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 104 78-125 % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 102 85-124 % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 96.0 84-126 % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 90.1 77-129 % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 50 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 50 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 50 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 1 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 1 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 1 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 2 of 11 April 6, 2022 Lab ID : CC 2280902-002 Description : B-05-33 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 1 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 3 of 11 April 6, 2022 Lab ID : CC 2280902-002 Description : B-05-33 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 4 of 11 April 6, 2022 Lab ID : CC 2280902-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 14, 2022-16:56 Sampled By : Dan O. Received On : March 15, 2022-11:09 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-05- 52 Depth Project : SLO PCE B-05 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 107 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 106 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 96.3 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 86.2 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 5 of 11 April 6, 2022 Lab ID : CC 2280902-003 Description : B-05- 52 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 6 of 11 April 6, 2022 Lab ID : CC 2280902-003 Description : B-05- 52 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 7 of 11 This Page is to be Stamped April 6, 2022 Lab ID : CC 2280902 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 87.4 % 52-137 MS ug/L 25.00 94.1 % 25-179 (CC 2280698-002) MSD ug/L 25.00 91.7 % 25-179 MSRPD ug/L 25.00 2.6% ≤26 1,1-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/17/22:202979VRG Blank ug/L 25.00 98.5 % 84-126 LCS ug/L 25.00 97.1 % 84-126 MS ug/L 25.00 103 % 84-126 (CC 2280698-002) MSD ug/L 25.00 101 % 84-126 MSRPD ug/L 25.00 1.5% ≤20.0 1,2-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/17/22:202979VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/17/22:202979VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/17/22:202979VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/17/22:202979VRG Blank ug/L 25.00 103 % 78-125 LCS ug/L 25.00 98.9 % 78-125 MS ug/L 25.00 106 % 0-200 (CC 2280698-002) MSD ug/L 25.00 103 % 0-200 MSRPD ug/L 25.00 2.6% ≤20.0 4-Chlorotoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/17/22:202979VRG Blank ug/L ND <10 Acetone 5030B 03/17/22:202979VRG Blank ug/L ND <50 Acrolein 5030B 03/17/22:202979VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/17/22:202979VRG Blank ug/L ND <50 Benzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 89.2 % 60-134 MS ug/L 25.00 118 % 47-169 (CC 2280698-002) MSD ug/L 25.00 112 % 47-169 MSRPD ug/L 25.00 5.5% ≤24 Bromobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromoform 5030B 03/17/22:202979VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/17/22:202979VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 95.4 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 8 of 11 April 6, 2022 Lab ID : CC 2280902 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 118 % 31-212 (CC 2280698-002) MSD ug/L 25.00 120 % 31-212 MSRPD ug/L 25.00 1.3% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chloroform 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/17/22:202979VRG Blank ug/L 25.00 108 % 85-124 LCS ug/L 25.00 102 % 85-124 MS ug/L 25.00 99.8 % 85-124 (CC 2280698-002) MSD ug/L 25.00 101 % 85-124 MSRPD ug/L 25.00 1.3% ≤20.0 Dibromomethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/17/22:202979VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Freon-11 5030B 03/17/22:202979VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/17/22:202979VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/17/22:202979VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/17/22:202979VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Styrene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 TAME 5030B 03/17/22:202979VRG Blank ug/L ND <5 tert-Butanol 5030B 03/17/22:202979VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Toluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 80.1 % 56-131 MS ug/L 25.00 97.5 % 44-164 (CC 2280698-002) MSD ug/L 25.00 90.0 % 44-164 MSRPD ug/L 25.00 7.9% ≤30 Toluene-d8 5030B 03/17/22:202979VRG Blank ug/L 25.00 89.8 % 77-129 LCS ug/L 25.00 93.7 % 77-129 MS ug/L 25.00 96.0 % 77-129 (CC 2280698-002) MSD ug/L 25.00 93.0 % 77-129 MSRPD ug/L 25.00 3.2% ≤20 trans-1,2-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 94.1 % 61-123 MS ug/L 25.00 103 % 41-167 (CC 2280698-002) MSD ug/L 25.00 98.2 % 41-167 MSRPD ug/L 25.00 5.0% ≤32 Vinyl Acetate 5030B 03/17/22:202979VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/17/22:202979VRG Blank ug/L ND <2 Xylenes o 5030B 03/17/22:202979VRG Blank ug/L ND <2 Page 9 of 11 April 6, 2022 Lab ID : CC 2280902 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 94.6 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/17/22:204013VRG CCV ug/L 25.00 110 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.9 % 70-130 1,1,2-Trichloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 91.6 % 70-130 1,1-Dichloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 1,1-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 80-120 1,1-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 105 % 70-130 1,2,3-Trichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 191 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 143 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 1,2-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 1,2-Dichloroethane-d4 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.7 % 70-130 1,2-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 80-120 1,3,5-Trimethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 103 % 70-130 1,3-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.4 % 70-130 1,3-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 1,4-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 2,2-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 70-130 2-Butanone (MEK) 8260B 03/17/22:204013VRG CCV ug/L 100.0 107 % 50-150 2-Chloroethylvinyl ether 8260B 03/17/22:204013VRG CCV ug/L 100.0 106 % 50-150 2-Chlorotoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 2-Hexanone 8260B 03/17/22:204013VRG CCV ug/L 100.0 132 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/17/22:204013VRG CCV ug/L 25.00 96.7 % 70-130 4-Chlorotoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.3 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/17/22:204013VRG CCV ug/L 100.0 114 % 50-150 Acetone 8260B 03/17/22:204013VRG CCV ug/L 100.0 77.6 % 50-150 Acrolein 8260B 03/17/22:204013VRG CCV ug/L 100.0 208 % 50-150 360 Acrylonitrile 8260B 03/17/22:204013VRG CCV ug/L 100.0 256 % 50-150 360 Benzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 Bromobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 104 % 70-130 Bromochloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 100 % 70-130 Bromodichloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 93.6 % 70-130 Bromoform 8260B 03/17/22:204013VRG CCV ug/L 25.00 71.8 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/17/22:204013VRG CCV ug/L 25.00 73.8 % 70-130 Carbon Disulfide 8260B 03/17/22:204013VRG CCV ug/L 100.0 75.5 % 50-150 Carbon Tetrachloride 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 Chlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.6 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.6 % 70-130 Chloroform 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.2 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.9 % 70-130 cis-1,2-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 109 % 70-130 cis-1,3-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 70-130 Dibromochloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.3 % 70-130 Dibromofluromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.5 % 70-130 Dibromomethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.7 % 70-130 Dichlorodifluoromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 81.0 % 70-130 Dichloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 104 % 70-130 Ethyl tert-Butyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 50-150 Ethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 113 % 80-120 Hexachlorobutadiene 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 70-130 Isopropyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 118 % 50-150 Isopropylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.4 % 70-130 Page 10 of 11 April 6, 2022 Lab ID : CC 2280902 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 n-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 n-Propylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 70-130 p-Isopropyltoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.3 % 70-130 sec-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.0 % 70-130 Styrene 8260B 03/17/22:204013VRG CCV ug/L 25.00 108 % 70-130 TAME 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 50-150 tert-Butanol 8260B 03/17/22:204013VRG CCV ug/L 125.0 97.9 % 50-150 tert-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.1 % 70-130 Tetrachloroethylene (PCE) 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.3 % 70-130 Toluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 95.8 % 80-120 Toluene-d8 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.9 % 70-130 trans-1,2-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 111 % 70-130 trans-1,3-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 108 % 70-130 Trichloroethylene (TCE) 8260B 03/17/22:204013VRG CCV ug/L 25.00 103 % 70-130 Trichlorofluoromethane F-11 8260B 03/17/22:204013VRG CCV ug/L 25.00 76.8 % 70-130 Vinyl Acetate 8260B 03/17/22:204013VRG CCV ug/L 100.0 125 % 50-150 Vinyl Chloride 8260B 03/17/22:204013VRG CCV ug/L 25.00 89.7 % 80-120 Xylene m,p 8260B 03/17/22:204013VRG CCV ug/L 50.00 105 % 70-130 Xylenes o 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 11 of 11 April 12, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280950 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-06-37-Depth 03/16/2022 03/17/2022 CC 2280950-001 GW B-06-44-Depth 03/16/2022 03/17/2022 CC 2280950-002 GW B-06-51-Depth 03/16/2022 03/17/2022 CC 2280950-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/29/2022:203078 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573). 03/21/2022:203111 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Dibromofluromethane: 320 LCS not within Acceptance Range (AR). Data was accepted based on the BS/BSD recovery. The following note applies to 1,2-Dichloroethane-d4: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 03/21/2022:204514 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, Acrylonitrile, Hexachlorobutadiene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 03/29/2022:204766 All analysis quality controls are within established criteria, except: Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 12, 2022 Lab ID : CC 2280950 Water Systems Consulting, Inc. Customer : 8-1286 Organic QC 8260B The following note applies to 1,2,4-Trichlorobenzene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 04.2 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-12 Page 2 of 15 April 12, 2022 Lab ID : CC 2280950-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 16, 2022-14:46 Sampled By : Dan O. Received On : March 17, 2022-12:00 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-06-37-Depth Project : SLO PCE B-06 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 79.0 78-125* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 87.9 85-124* % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 89.1 84-126* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 95.6 77-129* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 1* ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 2-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 12, 2022 Lab ID : CC 2280950-001 Description : B-06-37-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 4 of 15 April 12, 2022 Lab ID : CC 2280950-001 Description : B-06-37-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 12, 2022 Lab ID : CC 2280950-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 16, 2022-15:20 Sampled By : Dan O. Received On : March 17, 2022-12:00 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-06-44-Depth Project : SLO PCE B-06 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 84.6 78-125* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 79.5 85-124* % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 82.7 84-126* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 101 77-129* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 1* ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 2-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 12, 2022 Lab ID : CC 2280950-002 Description : B-06-44-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 7 of 15 April 12, 2022 Lab ID : CC 2280950-002 Description : B-06-44-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 12, 2022 Lab ID : CC 2280950-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 16, 2022-16:00 Sampled By : Dan O. Received On : March 17, 2022-12:00 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-06-51-Depth Project : SLO PCE B-06 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 85.9 78-125* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 77.7 85-124* % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 81.5 84-126* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 99.6 77-129* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 250* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 250* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 250* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 25* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 2.5* ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 2-Chlorotoluene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 12, 2022 Lab ID : CC 2280950-003 Description : B-06-51-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 25* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 25* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 25* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 25* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 50* ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 1,1,1-Trichloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 10 of 15 April 12, 2022 Lab ID : CC 2280950-003 Description : B-06-51-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 12, 2022 Lab ID : CC 2280950 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 110 % 52-137 MS ug/L 25.00 67.6 % 25-179 (CC 2280948-002) MSD ug/L 25.00 61.9 % 25-179 MSRPD ug/L 0.000 8.9% ≤26 1,1-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/29/22:203078VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/21/22:203111VRG Blank ug/L 25.00 104 % 84-126 LCS ug/L 25.00 95.9 % 84-126 MS ug/L 25.00 84.4 % 84-126 (CC 2280948-002) MSD ug/L 25.00 103 % 84-126 MSRPD ug/L 0.000 20.3% ≤20.0 435 1,2-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/21/22:203111VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/21/22:203111VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/21/22:203111VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/21/22:203111VRG Blank ug/L 25.00 89.4 % 78-125 LCS ug/L 25.00 85.1 % 78-125 MS ug/L 25.00 84.9 % 0-200 (CC 2280948-002) MSD ug/L 25.00 89.0 % 0-200 MSRPD ug/L 0.000 4.7% ≤20.0 4-Chlorotoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/21/22:203111VRG Blank ug/L ND <10 Acetone 5030B 03/21/22:203111VRG Blank ug/L ND <50 Acrolein 5030B 03/21/22:203111VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/21/22:203111VRG Blank ug/L ND <50 Benzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 112 % 60-134 MS ug/L 25.00 65.8 % 47-169 (CC 2280948-002) MSD ug/L 25.00 70.3 % 47-169 MSRPD ug/L 0.000 6.6% ≤24 Bromobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromoform 5030B 03/21/22:203111VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/21/22:203111VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 120 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 12, 2022 Lab ID : CC 2280950 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 75.4 % 31-212 (CC 2280948-002) MSD ug/L 25.00 82.4 % 31-212 MSRPD ug/L 0.000 8.9% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chloroform 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/29/22:203078VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/21/22:203111VRG Blank ug/L 25.00 93.3 % 85-124 LCS ug/L 25.00 84.2 % 85-124 325 MS ug/L 25.00 87.5 % 85-124 (CC 2280948-002) MSD ug/L 25.00 87.2 % 85-124 MSRPD ug/L 0.000 0.4% ≤20.0 Dibromomethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/21/22:203111VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Freon-11 5030B 03/21/22:203111VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/21/22:203111VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/21/22:203111VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/21/22:203111VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Styrene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 TAME 5030B 03/21/22:203111VRG Blank ug/L ND <5 tert-Butanol 5030B 03/21/22:203111VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Toluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 99.8 % 56-131 MS ug/L 25.00 60.4 % 44-164 (CC 2280948-002) MSD ug/L 25.00 64.9 % 44-164 MSRPD ug/L 0.000 7.1% ≤30 Toluene-d8 5030B 03/21/22:203111VRG Blank ug/L 25.00 101 % 77-129 LCS ug/L 25.00 103 % 77-129 MS ug/L 25.00 104 % 77-129 (CC 2280948-002) MSD ug/L 25.00 103 % 77-129 MSRPD ug/L 0.000 0.05% ≤20 trans-1,2-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 115 % 61-123 MS ug/L 25.00 63.0 % 41-167 (CC 2280948-002) MSD ug/L 25.00 65.8 % 41-167 MSRPD ug/L 0.000 4.2% ≤32 Vinyl Acetate 5030B 03/21/22:203111VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/21/22:203111VRG Blank ug/L ND <2 Xylenes o 5030B 03/21/22:203111VRG Blank ug/L ND <2 Page 13 of 15 April 12, 2022 Lab ID : CC 2280950 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 100 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.7 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.0 % 70-130 1,1,2-Trichloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 88.3 % 70-130 1,1-Dichloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 96.9 % 70-130 1,1-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 80-120 1,1-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.0 % 70-130 1,2,3-Trichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 518 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/29/22:204766VRG CCV ug/L 25.00 252 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 83.8 % 70-130 1,2-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 86.8 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/21/22:204514VRG CCV ug/L 25.00 98.6 % 70-130 1,2-Dichloroethane-d4 8260B 03/21/22:204514VRG CCV ug/L 25.00 91.8 % 70-130 1,2-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 90.9 % 80-120 1,3,5-Trimethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 79.3 % 70-130 1,3-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 83.1 % 70-130 1,3-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 112 % 70-130 1,4-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 82.6 % 70-130 2,2-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 112 % 70-130 2-Butanone (MEK) 8260B 03/21/22:204514VRG CCV ug/L 100.0 76.0 % 50-150 2-Chloroethylvinyl ether 8260B 03/21/22:204514VRG CCV ug/L 100.0 121 % 50-150 2-Chlorotoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 87.4 % 70-130 2-Hexanone 8260B 03/21/22:204514VRG CCV ug/L 100.0 135 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/21/22:204514VRG CCV ug/L 25.00 75.5 % 70-130 4-Chlorotoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 73.4 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/21/22:204514VRG CCV ug/L 100.0 117 % 50-150 Acetone 8260B 03/21/22:204514VRG CCV ug/L 100.0 73.8 % 50-150 Acrolein 8260B 03/21/22:204514VRG CCV ug/L 100.0 98.0 % 50-150 Acrylonitrile 8260B 03/21/22:204514VRG CCV ug/L 100.0 179 % 50-150 360 Benzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 103 % 70-130 Bromobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 86.0 % 70-130 Bromochloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.9 % 70-130 Bromodichloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.8 % 70-130 Bromoform 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.6 % 70-130 Carbon Disulfide 8260B 03/21/22:204514VRG CCV ug/L 100.0 83.4 % 50-150 Carbon Tetrachloride 8260B 03/21/22:204514VRG CCV ug/L 25.00 94.6 % 70-130 Chlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/21/22:204514VRG CCV ug/L 25.00 94.5 % 70-130 Chloroform 8260B 03/21/22:204514VRG CCV ug/L 25.00 91.3 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/29/22:204766VRG CCV ug/L 25.00 93.6 % 70-130 cis-1,2-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 102 % 70-130 cis-1,3-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 107 % 70-130 Dibromochloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 105 % 70-130 Dibromofluromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 82.5 % 70-130 Dibromomethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 99.4 % 70-130 Dichlorodifluoromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.6 % 70-130 Dichloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 97.1 % 70-130 Ethyl tert-Butyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 109 % 50-150 Ethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 80-120 Hexachlorobutadiene 8260B 03/21/22:204514VRG CCV ug/L 25.00 163 % 70-130 360 Isopropyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 118 % 50-150 Isopropylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 75.6 % 70-130 Page 14 of 15 April 12, 2022 Lab ID : CC 2280950 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 108 % 70-130 n-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 85.1 % 70-130 n-Propylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 77.0 % 70-130 p-Isopropyltoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 79.1 % 70-130 sec-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 76.5 % 70-130 Styrene 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 70-130 TAME 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 50-150 tert-Butanol 8260B 03/21/22:204514VRG CCV ug/L 125.0 113 % 50-150 tert-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 77.5 % 70-130 Tetrachloroethylene (PCE) 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 70-130 Toluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 96.0 % 80-120 Toluene-d8 8260B 03/21/22:204514VRG CCV ug/L 25.00 102 % 70-130 trans-1,2-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 108 % 70-130 trans-1,3-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 99.5 % 70-130 Trichloroethylene (TCE) 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 70-130 Trichlorofluoromethane F-11 8260B 03/21/22:204514VRG CCV ug/L 25.00 76.5 % 70-130 Vinyl Acetate 8260B 03/21/22:204514VRG CCV ug/L 100.0 108 % 50-150 Vinyl Chloride 8260B 03/21/22:204514VRG CCV ug/L 25.00 81.9 % 80-120 Xylene m,p 8260B 03/21/22:204514VRG CCV ug/L 50.00 104 % 70-130 Xylenes o 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 325 : The LCS was out of acceptance limits. Results may be biased low. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 15 of 15 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280963 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-07-33 Depth 03/17/2022 03/18/2022 CC 2280963-001 GW B-07-38 Depth 03/17/2022 03/18/2022 CC 2280963-002 GW B-07-51 Depth 03/17/2022 03/18/2022 CC 2280963-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/30/2022:203544 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to 1,1-Dichloroethylene: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 03/30/2022:204803 All analysis quality controls are within established criteria, except: The following note applies to Bromomethane (Methyl Bromide), Trichlorofluoromethane F-11, Hexachlorobutadiene, Vinyl Acetate: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. The following note applies to Bromomethane (Methyl Bromide), Trichlorofluoromethane F-11: 380 CCV met CCC and SPCC criteria, Results were reported. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 13, 2022 Lab ID : CC 2280963 Water Systems Consulting, Inc. Customer : 8-1286 Discussion of Analytical Results: - Case Narrative - 04/13/22 - Due to the sample matrix for sample ID, B-07- 38 Depth, the preservative did not bring the pH to 2 pH units as required by the method. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 04.0 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 15 April 13, 2022 Lab ID : CC 2280963-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 17, 2022-06:53 Sampled By : Dan O Received On : March 18, 2022-12:10 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-07-33 Depth Project : SLO PCE B-07 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 94.6 78-125 % 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromofluoromethane‡ 102 85-124 % 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane-d4‡ 102 84-126 % 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene-d8‡ 93.2 77-129 % 5030B 03/30/22:203544 8260B 03/30/22:204803 Acetone ND 50 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrolein ND 50 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrylonitrile ND 50 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Benzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromobenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromochloromethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromodichloromethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromoform ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromomethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butanol ND 5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Butanone (MEK) ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Butylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 sec-Butylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Disulfide ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Tetrachloride ND 1 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chlorobenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroethane ND 1 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroform ND 1 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloromethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Chlorotoluene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromochloromethane ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromomethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 13, 2022 Lab ID : CC 2280963-001 Description : B-07-33 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl Benzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Hexachlorobutadiene ND 5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Hexanone ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Isopropylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methylene Chloride ND 5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Propylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Styrene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Tetrachloroethylene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichloroethylene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichlorofluoromethane ND 1 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Acetate ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Chloride ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes m,p ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Page 4 of 15 April 13, 2022 Lab ID : CC 2280963-001 Description : B-07-33 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chloroethylvinylether ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 13, 2022 Lab ID : CC 2280963-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 17, 2022-07:30 Sampled By : Dan O Received On : March 18, 2022-12:10 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-07-38 Depth Project : SLO PCE B-07 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 94.1 78-125* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromofluoromethane‡ 103 85-124* % 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane-d4‡ 131 84-126* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene-d8‡ 94.4 77-129* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Acetone ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrolein ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrylonitrile ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Benzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromochloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromodichloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromoform ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromomethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butanol ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Butanone (MEK) ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 sec-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Disulfide ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Tetrachloride ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroethane ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroform ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Chlorotoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromochloromethane ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromomethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dichlorodifluoromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 13, 2022 Lab ID : CC 2280963-002 Description : B-07-38 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2,2-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl Benzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Hexachlorobutadiene ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Hexanone ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Isopropylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 p-Isopropyltoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methylene Chloride ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Propylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Styrene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Tetrachloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichlorofluoromethane ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Acetate ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Chloride ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes m,p ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Page 7 of 15 April 13, 2022 Lab ID : CC 2280963-002 Description : B-07-38 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chloroethylvinylether ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 13, 2022 Lab ID : CC 2280963-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 17, 2022-08:00 Sampled By : Dan O Received On : March 18, 2022-12:10 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-07-51 Depth Project : SLO PCE B-07 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 96.6 78-125* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromofluoromethane‡ 91.3 85-124* % 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane-d4‡ 103 84-126* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene-d8‡ 92.1 77-129* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Acetone ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrolein ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrylonitrile ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Benzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromochloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromodichloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromoform ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromomethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butanol ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Butanone (MEK) ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 sec-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Disulfide ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Tetrachloride ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroethane ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroform ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Chlorotoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromochloromethane ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromomethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dichlorodifluoromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 13, 2022 Lab ID : CC 2280963-003 Description : B-07-51 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2,2-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl Benzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Hexachlorobutadiene ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Hexanone ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Isopropylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 p-Isopropyltoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methylene Chloride ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Propylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Styrene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Tetrachloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichlorofluoromethane ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Acetate ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Chloride ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes m,p ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Page 10 of 15 April 13, 2022 Lab ID : CC 2280963-003 Description : B-07-51 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chloroethylvinylether ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 13, 2022 Lab ID : CC 2280963 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 LCS ug/L 25.00 90.2 % 52-137 MS ug/L 25.00 152 % 25-179 (CC 2280961-002) MSD ug/L 25.00 103 % 25-179 MSRPD ug/L 0.000 38.3% ≤26 435 1,1-Dichloropropene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/30/22:203544VRG Blank ug/L 25.00 100 % 84-126 LCS ug/L 25.00 120 % 84-126 MS ug/L 25.00 104 % 84-126 (CC 2280961-002) MSD ug/L 25.00 111 % 84-126 MSRPD ug/L 0.000 6.8% ≤20.0 1,2-Dichloropropane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/30/22:203544VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/30/22:203544VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/30/22:203544VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/30/22:203544VRG Blank ug/L 25.00 93.5 % 78-125 LCS ug/L 25.00 98.0 % 78-125 MS ug/L 25.00 93.3 % 0-200 (CC 2280961-002) MSD ug/L 25.00 97.3 % 0-200 MSRPD ug/L 0.000 4.2% ≤20.0 4-Chlorotoluene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/30/22:203544VRG Blank ug/L ND <10 Acetone 5030B 03/30/22:203544VRG Blank ug/L ND <50 Acrolein 5030B 03/30/22:203544VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/30/22:203544VRG Blank ug/L ND <50 Benzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 LCS ug/L 25.00 118 % 60-134 MS ug/L 25.00 126 % 47-169 (CC 2280961-002) MSD ug/L 25.00 131 % 47-169 MSRPD ug/L 0.000 4.1% ≤24 Bromobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Bromoform 5030B 03/30/22:203544VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/30/22:203544VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/30/22:203544VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 LCS ug/L 25.00 112 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 13, 2022 Lab ID : CC 2280963 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 141 % 31-212 (CC 2280961-002) MSD ug/L 25.00 141 % 31-212 MSRPD ug/L 0.000 0.05% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/30/22:203544VRG Blank ug/L ND <1 Chloroform 5030B 03/30/22:203544VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/30/22:203544VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/30/22:203544VRG Blank ug/L 25.00 84.4 % 85-124 LCS ug/L 25.00 100 % 85-124 MS ug/L 25.00 93.6 % 85-124 (CC 2280961-002) MSD ug/L 25.00 97.1 % 85-124 MSRPD ug/L 0.000 3.7% ≤20.0 Dibromomethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/30/22:203544VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/30/22:203544VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Freon-11 5030B 03/30/22:203544VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/30/22:203544VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/30/22:203544VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/30/22:203544VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Styrene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 TAME 5030B 03/30/22:203544VRG Blank ug/L ND <5 tert-Butanol 5030B 03/30/22:203544VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Toluene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 LCS ug/L 25.00 95.3 % 56-131 MS ug/L 25.00 112 % 44-164 (CC 2280961-002) MSD ug/L 25.00 114 % 44-164 MSRPD ug/L 0.000 1.3% ≤30 Toluene-d8 5030B 03/30/22:203544VRG Blank ug/L 25.00 82.5 % 77-129 LCS ug/L 25.00 97.1 % 77-129 MS ug/L 25.00 95.5 % 77-129 (CC 2280961-002) MSD ug/L 25.00 100 % 77-129 MSRPD ug/L 0.000 4.6% ≤20 trans-1,2-Dichloroethylene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 LCS ug/L 25.00 105 % 61-123 MS ug/L 25.00 125 % 41-167 (CC 2280961-002) MSD ug/L 25.00 130 % 41-167 MSRPD ug/L 0.000 3.5% ≤32 Vinyl Acetate 5030B 03/30/22:203544VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/30/22:203544VRG Blank ug/L ND <2 Xylenes o 5030B 03/30/22:203544VRG Blank ug/L ND <2 Page 13 of 15 April 13, 2022 Lab ID : CC 2280963 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 95.8 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/30/22:204803VRG CCV ug/L 25.00 99.8 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 96.3 % 70-130 1,1,2-Trichloroethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 96.8 % 70-130 1,1-Dichloroethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.3 % 70-130 1,1-Dichloroethylene 8260B 03/30/22:204803VRG CCV ug/L 25.00 101 % 80-120 1,1-Dichloropropene 8260B 03/30/22:204803VRG CCV ug/L 25.00 102 % 70-130 1,2,3-Trichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 892 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 279 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.1 % 70-130 1,2-Dichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 102 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/30/22:204803VRG CCV ug/L 25.00 114 % 70-130 1,2-Dichloroethane-d4 8260B 03/30/22:204803VRG CCV ug/L 25.00 102 % 70-130 1,2-Dichloropropane 8260B 03/30/22:204803VRG CCV ug/L 25.00 107 % 80-120 1,3,5-Trimethylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 97.9 % 70-130 1,3-Dichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 93.3 % 70-130 1,3-Dichloropropane 8260B 03/30/22:204803VRG CCV ug/L 25.00 113 % 70-130 1,4-Dichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 99.1 % 70-130 2,2-Dichloropropane 8260B 03/30/22:204803VRG CCV ug/L 25.00 110 % 70-130 2-Butanone (MEK) 8260B 03/30/22:204803VRG CCV ug/L 100.0 129 % 50-150 2-Chloroethylvinyl ether 8260B 03/30/22:204803VRG CCV ug/L 100.0 136 % 50-150 2-Chlorotoluene 8260B 03/30/22:204803VRG CCV ug/L 25.00 107 % 70-130 2-Hexanone 8260B 03/30/22:204803VRG CCV ug/L 100.0 159 % 50-150 360 4-Bromofluorobenzene (BFB) 8260B 03/30/22:204803VRG CCV ug/L 25.00 97.2 % 70-130 4-Chlorotoluene 8260B 03/30/22:204803VRG CCV ug/L 25.00 97.5 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/30/22:204803VRG CCV ug/L 100.0 139 % 50-150 Acetone 8260B 03/30/22:204803VRG CCV ug/L 100.0 95.1 % 50-150 Acrolein 8260B 03/30/22:204803VRG CCV ug/L 100.0 179 % 50-150 360 Acrylonitrile 8260B 03/30/22:204803VRG CCV ug/L 100.0 256 % 50-150 360 Benzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 111 % 70-130 Bromobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 100 % 70-130 Bromochloromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 90.7 % 70-130 Bromodichloromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.7 % 70-130 Bromoform 8260B 03/30/22:204803VRG CCV ug/L 25.00 79.2 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/30/22:204803VRG CCV ug/L 25.00 66.5 % 70-130 380 Carbon Disulfide 8260B 03/30/22:204803VRG CCV ug/L 100.0 71.7 % 50-150 Carbon Tetrachloride 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.7 % 70-130 Chlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 97.4 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/30/22:204803VRG CCV ug/L 25.00 84.4 % 70-130 Chloroform 8260B 03/30/22:204803VRG CCV ug/L 25.00 88.9 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.5 % 70-130 cis-1,2-Dichloroethylene 8260B 03/30/22:204803VRG CCV ug/L 25.00 94.9 % 70-130 cis-1,3-Dichloropropene 8260B 03/30/22:204803VRG CCV ug/L 25.00 109 % 70-130 Dibromochloromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 94.2 % 70-130 Dibromofluromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 93.8 % 70-130 Dibromomethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 107 % 70-130 Dichlorodifluoromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 96.8 % 70-130 Dichloromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 94.1 % 70-130 Ethyl tert-Butyl Ether 8260B 03/30/22:204803VRG CCV ug/L 25.00 116 % 50-150 Ethylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 105 % 80-120 Hexachlorobutadiene 8260B 03/30/22:204803VRG CCV ug/L 25.00 197 % 70-130 360 Isopropyl Ether 8260B 03/30/22:204803VRG CCV ug/L 25.00 122 % 50-150 Isopropylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 95.4 % 70-130 Page 14 of 15 April 13, 2022 Lab ID : CC 2280963 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/30/22:204803VRG CCV ug/L 25.00 122 % 70-130 n-Butylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 102 % 70-130 n-Propylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 95.7 % 70-130 p-Isopropyltoluene 8260B 03/30/22:204803VRG CCV ug/L 25.00 95.9 % 70-130 sec-Butylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 90.8 % 70-130 Styrene 8260B 03/30/22:204803VRG CCV ug/L 25.00 99.4 % 70-130 TAME 8260B 03/30/22:204803VRG CCV ug/L 25.00 121 % 50-150 tert-Butanol 8260B 03/30/22:204803VRG CCV ug/L 125.0 98.7 % 50-150 tert-Butylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 94.9 % 70-130 Tetrachloroethylene (PCE) 8260B 03/30/22:204803VRG CCV ug/L 25.00 94.9 % 70-130 Toluene 8260B 03/30/22:204803VRG CCV ug/L 25.00 99.8 % 80-120 Toluene-d8 8260B 03/30/22:204803VRG CCV ug/L 25.00 99.5 % 70-130 trans-1,2-Dichloroethylene 8260B 03/30/22:204803VRG CCV ug/L 25.00 105 % 70-130 trans-1,3-Dichloropropene 8260B 03/30/22:204803VRG CCV ug/L 25.00 116 % 70-130 Trichloroethylene (TCE) 8260B 03/30/22:204803VRG CCV ug/L 25.00 103 % 70-130 Trichlorofluoromethane F-11 8260B 03/30/22:204803VRG CCV ug/L 25.00 57.9 % 70-130 380 Vinyl Acetate 8260B 03/30/22:204803VRG CCV ug/L 100.0 151 % 50-150 360 Vinyl Chloride 8260B 03/30/22:204803VRG CCV ug/L 25.00 80.6 % 80-120 Xylene m,p 8260B 03/30/22:204803VRG CCV ug/L 50.00 96.6 % 70-130 Xylenes o 8260B 03/30/22:204803VRG CCV ug/L 25.00 95.4 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 380 : CCV met CCC and SPCC criteria, Results were reported. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 15 of 15 April 12, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280922 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-08-37 Depth 03/16/2022 03/16/2022 CC 2280922-001 GW B-08-43 Depth 03/16/2022 03/16/2022 CC 2280922-002 GW B-08-48 Depth 03/16/2022 03/16/2022 CC 2280922-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/29/2022:203078 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573). 03/21/2022:203111 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Dibromofluromethane: 320 LCS not within Acceptance Range (AR). Data was accepted based on the BS/BSD recovery. The following note applies to 1,2-Dichloroethane-d4: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 03/21/2022:204514 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, Acrylonitrile, Hexachlorobutadiene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 03/29/2022:204766 All analysis quality controls are within established criteria, except: Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 12, 2022 Lab ID : CC 2280922 Water Systems Consulting, Inc. Customer : 8-1286 Organic QC 8260B The following note applies to 1,2,4-Trichlorobenzene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 04.2 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-12 Page 2 of 15 April 12, 2022 Lab ID : CC 2280922-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 16, 2022-10:20 Sampled By : Alex S Received On : March 16, 2022-11:41 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-08-37 Depth Project : SLO PCE B-08 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 82.4 78-125 % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 90.7 85-124 % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 92.1 84-126 % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 96.3 77-129 % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 50 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 50 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 50 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 1 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 1 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 1 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 0.5 ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 2-Chlorotoluene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 12, 2022 Lab ID : CC 2280922-001 Description : B-08-37 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 1 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 4 of 15 April 12, 2022 Lab ID : CC 2280922-001 Description : B-08-37 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 12, 2022 Lab ID : CC 2280922-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 16, 2022-10:45 Sampled By : Alex S Received On : March 16, 2022-11:41 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-08-43 Depth Project : SLO PCE B-08 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 83.9 78-125* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 88.7 85-124* % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 78.9 84-126* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 99.9 77-129* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 1* ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 2-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 12, 2022 Lab ID : CC 2280922-002 Description : B-08-43 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 7 of 15 April 12, 2022 Lab ID : CC 2280922-002 Description : B-08-43 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 12, 2022 Lab ID : CC 2280922-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 16, 2022-11:10 Sampled By : Alex S Received On : March 16, 2022-11:41 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-08-48 Depth Project : SLO PCE B-08 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 83.4 78-125* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 87.5 85-124* % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 86.7 84-126* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 91.9 77-129* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 250* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 250* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 250* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 25* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 2.5* ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 2-Chlorotoluene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 12, 2022 Lab ID : CC 2280922-003 Description : B-08-48 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 25* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 25* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 25* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 25* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 50* ug/L 5030B 03/29/22:203078 8260B 03/29/22:204766 1,1,1-Trichloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 2.5* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 10 of 15 April 12, 2022 Lab ID : CC 2280922-003 Description : B-08-48 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 50* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 12, 2022 Lab ID : CC 2280922 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 110 % 52-137 MS ug/L 25.00 67.6 % 25-179 (CC 2280948-002) MSD ug/L 25.00 61.9 % 25-179 MSRPD ug/L 0.000 8.9% ≤26 1,1-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/29/22:203078VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/21/22:203111VRG Blank ug/L 25.00 104 % 84-126 LCS ug/L 25.00 95.9 % 84-126 MS ug/L 25.00 84.4 % 84-126 (CC 2280948-002) MSD ug/L 25.00 103 % 84-126 MSRPD ug/L 0.000 20.3% ≤20.0 435 1,2-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/21/22:203111VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/21/22:203111VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/21/22:203111VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/21/22:203111VRG Blank ug/L 25.00 89.4 % 78-125 LCS ug/L 25.00 85.1 % 78-125 MS ug/L 25.00 84.9 % 0-200 (CC 2280948-002) MSD ug/L 25.00 89.0 % 0-200 MSRPD ug/L 0.000 4.7% ≤20.0 4-Chlorotoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/21/22:203111VRG Blank ug/L ND <10 Acetone 5030B 03/21/22:203111VRG Blank ug/L ND <50 Acrolein 5030B 03/21/22:203111VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/21/22:203111VRG Blank ug/L ND <50 Benzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 112 % 60-134 MS ug/L 25.00 65.8 % 47-169 (CC 2280948-002) MSD ug/L 25.00 70.3 % 47-169 MSRPD ug/L 0.000 6.6% ≤24 Bromobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromoform 5030B 03/21/22:203111VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/21/22:203111VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 120 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 12, 2022 Lab ID : CC 2280922 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 75.4 % 31-212 (CC 2280948-002) MSD ug/L 25.00 82.4 % 31-212 MSRPD ug/L 0.000 8.9% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chloroform 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/29/22:203078VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/21/22:203111VRG Blank ug/L 25.00 93.3 % 85-124 LCS ug/L 25.00 84.2 % 85-124 325 MS ug/L 25.00 87.5 % 85-124 (CC 2280948-002) MSD ug/L 25.00 87.2 % 85-124 MSRPD ug/L 0.000 0.4% ≤20.0 Dibromomethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/21/22:203111VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Freon-11 5030B 03/21/22:203111VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/21/22:203111VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/21/22:203111VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/21/22:203111VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Styrene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 TAME 5030B 03/21/22:203111VRG Blank ug/L ND <5 tert-Butanol 5030B 03/21/22:203111VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Toluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 99.8 % 56-131 MS ug/L 25.00 60.4 % 44-164 (CC 2280948-002) MSD ug/L 25.00 64.9 % 44-164 MSRPD ug/L 0.000 7.1% ≤30 Toluene-d8 5030B 03/21/22:203111VRG Blank ug/L 25.00 101 % 77-129 LCS ug/L 25.00 103 % 77-129 MS ug/L 25.00 104 % 77-129 (CC 2280948-002) MSD ug/L 25.00 103 % 77-129 MSRPD ug/L 0.000 0.05% ≤20 trans-1,2-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 115 % 61-123 MS ug/L 25.00 63.0 % 41-167 (CC 2280948-002) MSD ug/L 25.00 65.8 % 41-167 MSRPD ug/L 0.000 4.2% ≤32 Vinyl Acetate 5030B 03/21/22:203111VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/21/22:203111VRG Blank ug/L ND <2 Xylenes o 5030B 03/21/22:203111VRG Blank ug/L ND <2 Page 13 of 15 April 12, 2022 Lab ID : CC 2280922 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 100 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.7 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.0 % 70-130 1,1,2-Trichloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 88.3 % 70-130 1,1-Dichloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 96.9 % 70-130 1,1-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 80-120 1,1-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.0 % 70-130 1,2,3-Trichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 518 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/29/22:204766VRG CCV ug/L 25.00 252 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 83.8 % 70-130 1,2-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 86.8 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/21/22:204514VRG CCV ug/L 25.00 98.6 % 70-130 1,2-Dichloroethane-d4 8260B 03/21/22:204514VRG CCV ug/L 25.00 91.8 % 70-130 1,2-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 90.9 % 80-120 1,3,5-Trimethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 79.3 % 70-130 1,3-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 83.1 % 70-130 1,3-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 112 % 70-130 1,4-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 82.6 % 70-130 2,2-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 112 % 70-130 2-Butanone (MEK) 8260B 03/21/22:204514VRG CCV ug/L 100.0 76.0 % 50-150 2-Chloroethylvinyl ether 8260B 03/21/22:204514VRG CCV ug/L 100.0 121 % 50-150 2-Chlorotoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 87.4 % 70-130 2-Hexanone 8260B 03/21/22:204514VRG CCV ug/L 100.0 135 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/21/22:204514VRG CCV ug/L 25.00 75.5 % 70-130 4-Chlorotoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 73.4 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/21/22:204514VRG CCV ug/L 100.0 117 % 50-150 Acetone 8260B 03/21/22:204514VRG CCV ug/L 100.0 73.8 % 50-150 Acrolein 8260B 03/21/22:204514VRG CCV ug/L 100.0 98.0 % 50-150 Acrylonitrile 8260B 03/21/22:204514VRG CCV ug/L 100.0 179 % 50-150 360 Benzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 103 % 70-130 Bromobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 86.0 % 70-130 Bromochloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.9 % 70-130 Bromodichloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.8 % 70-130 Bromoform 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.6 % 70-130 Carbon Disulfide 8260B 03/21/22:204514VRG CCV ug/L 100.0 83.4 % 50-150 Carbon Tetrachloride 8260B 03/21/22:204514VRG CCV ug/L 25.00 94.6 % 70-130 Chlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/21/22:204514VRG CCV ug/L 25.00 94.5 % 70-130 Chloroform 8260B 03/21/22:204514VRG CCV ug/L 25.00 91.3 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/29/22:204766VRG CCV ug/L 25.00 93.6 % 70-130 cis-1,2-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 102 % 70-130 cis-1,3-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 107 % 70-130 Dibromochloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 105 % 70-130 Dibromofluromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 82.5 % 70-130 Dibromomethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 99.4 % 70-130 Dichlorodifluoromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.6 % 70-130 Dichloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 97.1 % 70-130 Ethyl tert-Butyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 109 % 50-150 Ethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 80-120 Hexachlorobutadiene 8260B 03/21/22:204514VRG CCV ug/L 25.00 163 % 70-130 360 Isopropyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 118 % 50-150 Isopropylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 75.6 % 70-130 Page 14 of 15 April 12, 2022 Lab ID : CC 2280922 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 108 % 70-130 n-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 85.1 % 70-130 n-Propylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 77.0 % 70-130 p-Isopropyltoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 79.1 % 70-130 sec-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 76.5 % 70-130 Styrene 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 70-130 TAME 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 50-150 tert-Butanol 8260B 03/21/22:204514VRG CCV ug/L 125.0 113 % 50-150 tert-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 77.5 % 70-130 Tetrachloroethylene (PCE) 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 70-130 Toluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 96.0 % 80-120 Toluene-d8 8260B 03/21/22:204514VRG CCV ug/L 25.00 102 % 70-130 trans-1,2-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 108 % 70-130 trans-1,3-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 99.5 % 70-130 Trichloroethylene (TCE) 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 70-130 Trichlorofluoromethane F-11 8260B 03/21/22:204514VRG CCV ug/L 25.00 76.5 % 70-130 Vinyl Acetate 8260B 03/21/22:204514VRG CCV ug/L 100.0 108 % 50-150 Vinyl Chloride 8260B 03/21/22:204514VRG CCV ug/L 25.00 81.9 % 80-120 Xylene m,p 8260B 03/21/22:204514VRG CCV ug/L 50.00 104 % 70-130 Xylenes o 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 325 : The LCS was out of acceptance limits. Results may be biased low. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 15 of 15 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280951 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-09-19-Depth 03/17/2022 03/17/2022 CC 2280951-001 GW B-09-43-Depth 03/17/2022 03/17/2022 CC 2280951-002 GW B-09-49-Depth 03/17/2022 03/17/2022 CC 2280951-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/21/2022:203111 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Dibromofluromethane: 320 LCS not within Acceptance Range (AR). Data was accepted based on the BS/BSD recovery. The following note applies to 1,2-Dichloroethane-d4: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 03/30/2022:203544 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573). 8260B 03/21/2022:204514 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, Acrylonitrile, Hexachlorobutadiene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 03/30/2022:204803 All analysis quality controls are within established criteria, except: Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 13, 2022 Lab ID : CC 2280951 Water Systems Consulting, Inc. Customer : 8-1286 Organic QC 8260B The following note applies to 1,2,4-Trichlorobenzene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Discussion of Analytical Results: - Case Narrative - 04/13/22 - Due to the sample matrix for sample B-09- 19 Depth, and B-09- 49 Depth, SLO PCE B-09, the preservative did not bring the pH to 2 pH units as required by the method. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 05.8 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 15 April 13, 2022 Lab ID : CC 2280951-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 17, 2022-14:39 Sampled By : Dan Received On : March 17, 2022-16:24 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-09-19-Depth Project : SLO PCE B-09 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 88.5 78-125* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 99.9 85-124* % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 92.1 84-126* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 92.3 77-129* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 13, 2022 Lab ID : CC 2280951-001 Description : B-09-19-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene 6 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 4 of 15 April 13, 2022 Lab ID : CC 2280951-001 Description : B-09-19-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 13, 2022 Lab ID : CC 2280951-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 17, 2022-15:09 Sampled By : Dan Received On : March 17, 2022-16:24 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-09-43-Depth Project : SLO PCE B-09 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 88.1 78-125* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 75.2 85-124* % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 79.6 84-126* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 101 77-129* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 13, 2022 Lab ID : CC 2280951-002 Description : B-09-43-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene 21 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 7 of 15 April 13, 2022 Lab ID : CC 2280951-002 Description : B-09-43-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 13, 2022 Lab ID : CC 2280951-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 17, 2022-15:39 Sampled By : Dan Received On : March 17, 2022-16:24 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-09-49-Depth Project : SLO PCE B-09 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 88.3 78-125* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 78.6 85-124* % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 83.6 84-126* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 96.9 77-129* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 13, 2022 Lab ID : CC 2280951-003 Description : B-09-49-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene 21 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 10 of 15 April 13, 2022 Lab ID : CC 2280951-003 Description : B-09-49-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 13, 2022 Lab ID : CC 2280951 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 110 % 52-137 MS ug/L 25.00 67.6 % 25-179 (CC 2280948-002) MSD ug/L 25.00 61.9 % 25-179 MSRPD ug/L 0.000 8.9% ≤26 1,1-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/21/22:203111VRG Blank ug/L 25.00 104 % 84-126 LCS ug/L 25.00 95.9 % 84-126 MS ug/L 25.00 84.4 % 84-126 (CC 2280948-002) MSD ug/L 25.00 103 % 84-126 MSRPD ug/L 0.000 20.3% ≤20.0 435 1,2-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/21/22:203111VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/21/22:203111VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/21/22:203111VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/21/22:203111VRG Blank ug/L 25.00 89.4 % 78-125 LCS ug/L 25.00 85.1 % 78-125 MS ug/L 25.00 84.9 % 0-200 (CC 2280948-002) MSD ug/L 25.00 89.0 % 0-200 MSRPD ug/L 0.000 4.7% ≤20.0 4-Chlorotoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/21/22:203111VRG Blank ug/L ND <10 Acetone 5030B 03/21/22:203111VRG Blank ug/L ND <50 Acrolein 5030B 03/21/22:203111VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/21/22:203111VRG Blank ug/L ND <50 Benzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 112 % 60-134 MS ug/L 25.00 65.8 % 47-169 (CC 2280948-002) MSD ug/L 25.00 70.3 % 47-169 MSRPD ug/L 0.000 6.6% ≤24 Bromobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromoform 5030B 03/21/22:203111VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/21/22:203111VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 120 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 13, 2022 Lab ID : CC 2280951 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 75.4 % 31-212 (CC 2280948-002) MSD ug/L 25.00 82.4 % 31-212 MSRPD ug/L 0.000 8.9% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chloroform 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/21/22:203111VRG Blank ug/L 25.00 93.3 % 85-124 LCS ug/L 25.00 84.2 % 85-124 325 MS ug/L 25.00 87.5 % 85-124 (CC 2280948-002) MSD ug/L 25.00 87.2 % 85-124 MSRPD ug/L 0.000 0.4% ≤20.0 Dibromomethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/21/22:203111VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Freon-11 5030B 03/21/22:203111VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/21/22:203111VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/21/22:203111VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/21/22:203111VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Styrene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 TAME 5030B 03/21/22:203111VRG Blank ug/L ND <5 tert-Butanol 5030B 03/21/22:203111VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Toluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 99.8 % 56-131 MS ug/L 25.00 60.4 % 44-164 (CC 2280948-002) MSD ug/L 25.00 64.9 % 44-164 MSRPD ug/L 0.000 7.1% ≤30 Toluene-d8 5030B 03/21/22:203111VRG Blank ug/L 25.00 101 % 77-129 LCS ug/L 25.00 103 % 77-129 MS ug/L 25.00 104 % 77-129 (CC 2280948-002) MSD ug/L 25.00 103 % 77-129 MSRPD ug/L 0.000 0.05% ≤20 trans-1,2-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 115 % 61-123 MS ug/L 25.00 63.0 % 41-167 (CC 2280948-002) MSD ug/L 25.00 65.8 % 41-167 MSRPD ug/L 0.000 4.2% ≤32 Vinyl Acetate 5030B 03/21/22:203111VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/21/22:203111VRG Blank ug/L ND <2 Xylenes o 5030B 03/21/22:203111VRG Blank ug/L ND <2 Page 13 of 15 April 13, 2022 Lab ID : CC 2280951 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 100 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.7 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.0 % 70-130 1,1,2-Trichloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 88.3 % 70-130 1,1-Dichloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 96.9 % 70-130 1,1-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 80-120 1,1-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.0 % 70-130 1,2,3-Trichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 518 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 279 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 83.8 % 70-130 1,2-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 86.8 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/21/22:204514VRG CCV ug/L 25.00 98.6 % 70-130 1,2-Dichloroethane-d4 8260B 03/21/22:204514VRG CCV ug/L 25.00 91.8 % 70-130 1,2-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 90.9 % 80-120 1,3,5-Trimethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 79.3 % 70-130 1,3-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 83.1 % 70-130 1,3-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 112 % 70-130 1,4-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 82.6 % 70-130 2,2-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 112 % 70-130 2-Butanone (MEK) 8260B 03/21/22:204514VRG CCV ug/L 100.0 76.0 % 50-150 2-Chloroethylvinyl ether 8260B 03/21/22:204514VRG CCV ug/L 100.0 121 % 50-150 2-Chlorotoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 87.4 % 70-130 2-Hexanone 8260B 03/21/22:204514VRG CCV ug/L 100.0 135 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/21/22:204514VRG CCV ug/L 25.00 75.5 % 70-130 4-Chlorotoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 73.4 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/21/22:204514VRG CCV ug/L 100.0 117 % 50-150 Acetone 8260B 03/21/22:204514VRG CCV ug/L 100.0 73.8 % 50-150 Acrolein 8260B 03/21/22:204514VRG CCV ug/L 100.0 98.0 % 50-150 Acrylonitrile 8260B 03/21/22:204514VRG CCV ug/L 100.0 179 % 50-150 360 Benzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 103 % 70-130 Bromobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 86.0 % 70-130 Bromochloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.9 % 70-130 Bromodichloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.8 % 70-130 Bromoform 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.6 % 70-130 Carbon Disulfide 8260B 03/21/22:204514VRG CCV ug/L 100.0 83.4 % 50-150 Carbon Tetrachloride 8260B 03/21/22:204514VRG CCV ug/L 25.00 94.6 % 70-130 Chlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/21/22:204514VRG CCV ug/L 25.00 94.5 % 70-130 Chloroform 8260B 03/21/22:204514VRG CCV ug/L 25.00 91.3 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.5 % 70-130 cis-1,2-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 102 % 70-130 cis-1,3-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 107 % 70-130 Dibromochloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 105 % 70-130 Dibromofluromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 82.5 % 70-130 Dibromomethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 99.4 % 70-130 Dichlorodifluoromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.6 % 70-130 Dichloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 97.1 % 70-130 Ethyl tert-Butyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 109 % 50-150 Ethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 80-120 Hexachlorobutadiene 8260B 03/21/22:204514VRG CCV ug/L 25.00 163 % 70-130 360 Isopropyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 118 % 50-150 Isopropylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 75.6 % 70-130 Page 14 of 15 April 13, 2022 Lab ID : CC 2280951 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 108 % 70-130 n-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 85.1 % 70-130 n-Propylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 77.0 % 70-130 p-Isopropyltoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 79.1 % 70-130 sec-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 76.5 % 70-130 Styrene 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 70-130 TAME 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 50-150 tert-Butanol 8260B 03/21/22:204514VRG CCV ug/L 125.0 113 % 50-150 tert-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 77.5 % 70-130 Tetrachloroethylene (PCE) 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 70-130 Toluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 96.0 % 80-120 Toluene-d8 8260B 03/21/22:204514VRG CCV ug/L 25.00 102 % 70-130 trans-1,2-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 108 % 70-130 trans-1,3-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 99.5 % 70-130 Trichloroethylene (TCE) 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 70-130 Trichlorofluoromethane F-11 8260B 03/21/22:204514VRG CCV ug/L 25.00 76.5 % 70-130 Vinyl Acetate 8260B 03/21/22:204514VRG CCV ug/L 100.0 108 % 50-150 Vinyl Chloride 8260B 03/21/22:204514VRG CCV ug/L 25.00 81.9 % 80-120 Xylene m,p 8260B 03/21/22:204514VRG CCV ug/L 50.00 104 % 70-130 Xylenes o 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 325 : The LCS was out of acceptance limits. Results may be biased low. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 15 of 15 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280948 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-10-42-Depth 03/17/2022 03/17/2022 CC 2280948-001 GW B-10-46-Depth 03/17/2022 03/17/2022 CC 2280948-002 GW B-10-52-Depth 03/17/2022 03/17/2022 CC 2280948-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/21/2022:203111 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Dibromofluromethane: 320 LCS not within Acceptance Range (AR). Data was accepted based on the BS/BSD recovery. The following note applies to 1,2-Dichloroethane-d4: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 03/30/2022:203544 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573). 8260B 03/21/2022:204514 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, Acrylonitrile, Hexachlorobutadiene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 03/30/2022:204803 All analysis quality controls are within established criteria, except: Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 13, 2022 Lab ID : CC 2280948 Water Systems Consulting, Inc. Customer : 8-1286 Organic QC 8260B The following note applies to 1,2,4-Trichlorobenzene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Discussion of Analytical Results: - Case Narrative - 04/13/22 - Due to the sample matrix for sample B-10- 52 Depth, the preservative did not bring the pH to 2 pH units as required by the method. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 05.8 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 15 April 13, 2022 Lab ID : CC 2280948-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 17, 2022-12:20 Sampled By : Alex S Received On : March 17, 2022-13:53 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-10-42-Depth Project : SLO PCE B-10 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 92.2 78-125* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 90.7 85-124* % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 86.4 84-126* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 94.8 77-129* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 13, 2022 Lab ID : CC 2280948-001 Description : B-10-42-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene 2 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 4 of 15 April 13, 2022 Lab ID : CC 2280948-001 Description : B-10-42-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 13, 2022 Lab ID : CC 2280948-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 17, 2022-12:48 Sampled By : Alex S Received On : March 17, 2022-13:53 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-10-46-Depth Project : SLO PCE B-10 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 94.5 78-125 % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 93.6 85-124 % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 95.9 84-126 % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 98.9 77-129 % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 50 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 50 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 50 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 1 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 1 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 1 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 13, 2022 Lab ID : CC 2280948-002 Description : B-10-46-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 1 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 0.5 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 7 of 15 April 13, 2022 Lab ID : CC 2280948-002 Description : B-10-46-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 10 ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 13, 2022 Lab ID : CC 2280948-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 17, 2022-13:20 Sampled By : Alex S Received On : March 17, 2022-13:53 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-10-52-Depth Project : SLO PCE B-10 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 87.4 78-125* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromofluoromethane‡ 87.1 85-124* % 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane-d4‡ 99.1 84-126* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene-d8‡ 102 77-129* % 5030B 03/21/22:203111 8260B 03/21/22:204514 Acetone ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrolein ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Acrylonitrile ND 100* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromochloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromodichloromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromoform ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Bromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butanol ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Butanone (MEK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 sec-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Butylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Disulfide ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Carbon Tetrachloride ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloroform ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Chloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Chlorotoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromochloromethane ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dibromomethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Dichlorodifluoromethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 13, 2022 Lab ID : CC 2280948-003 Description : B-10-52-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2,2-Dichloropropane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl Benzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Hexachlorobutadiene ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Hexanone ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Isopropylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 p-Isopropyltoluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Methylene Chloride ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 n-Propylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Styrene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Tetrachloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Toluene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichloroethylene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Trichlorofluoromethane ND 2* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Acetate ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Vinyl Chloride ND 1* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes ND -- ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Xylenes m,p ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 Page 10 of 15 April 13, 2022 Lab ID : CC 2280948-003 Description : B-10-52-Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 2-Chloroethylvinylether ND 20* ug/L 5030B 03/21/22:203111 8260B 03/21/22:204514 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 13, 2022 Lab ID : CC 2280948 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 110 % 52-137 MS ug/L 25.00 67.6 % 25-179 (CC 2280948-002) MSD ug/L 25.00 61.9 % 25-179 MSRPD ug/L 0.000 8.9% ≤26 1,1-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/21/22:203111VRG Blank ug/L 25.00 104 % 84-126 LCS ug/L 25.00 95.9 % 84-126 MS ug/L 25.00 84.4 % 84-126 (CC 2280948-002) MSD ug/L 25.00 103 % 84-126 MSRPD ug/L 0.000 20.3% ≤20.0 435 1,2-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/21/22:203111VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/21/22:203111VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/21/22:203111VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/21/22:203111VRG Blank ug/L 25.00 89.4 % 78-125 LCS ug/L 25.00 85.1 % 78-125 MS ug/L 25.00 84.9 % 0-200 (CC 2280948-002) MSD ug/L 25.00 89.0 % 0-200 MSRPD ug/L 0.000 4.7% ≤20.0 4-Chlorotoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/21/22:203111VRG Blank ug/L ND <10 Acetone 5030B 03/21/22:203111VRG Blank ug/L ND <50 Acrolein 5030B 03/21/22:203111VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/21/22:203111VRG Blank ug/L ND <50 Benzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 112 % 60-134 MS ug/L 25.00 65.8 % 47-169 (CC 2280948-002) MSD ug/L 25.00 70.3 % 47-169 MSRPD ug/L 0.000 6.6% ≤24 Bromobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Bromoform 5030B 03/21/22:203111VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/21/22:203111VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 120 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 13, 2022 Lab ID : CC 2280948 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 75.4 % 31-212 (CC 2280948-002) MSD ug/L 25.00 82.4 % 31-212 MSRPD ug/L 0.000 8.9% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chloroform 5030B 03/21/22:203111VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/21/22:203111VRG Blank ug/L 25.00 93.3 % 85-124 LCS ug/L 25.00 84.2 % 85-124 325 MS ug/L 25.00 87.5 % 85-124 (CC 2280948-002) MSD ug/L 25.00 87.2 % 85-124 MSRPD ug/L 0.000 0.4% ≤20.0 Dibromomethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/21/22:203111VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/21/22:203111VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Freon-11 5030B 03/21/22:203111VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/21/22:203111VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/21/22:203111VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/21/22:203111VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Styrene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 TAME 5030B 03/21/22:203111VRG Blank ug/L ND <5 tert-Butanol 5030B 03/21/22:203111VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Toluene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 99.8 % 56-131 MS ug/L 25.00 60.4 % 44-164 (CC 2280948-002) MSD ug/L 25.00 64.9 % 44-164 MSRPD ug/L 0.000 7.1% ≤30 Toluene-d8 5030B 03/21/22:203111VRG Blank ug/L 25.00 101 % 77-129 LCS ug/L 25.00 103 % 77-129 MS ug/L 25.00 104 % 77-129 (CC 2280948-002) MSD ug/L 25.00 103 % 77-129 MSRPD ug/L 0.000 0.05% ≤20 trans-1,2-Dichloroethylene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 LCS ug/L 25.00 115 % 61-123 MS ug/L 25.00 63.0 % 41-167 (CC 2280948-002) MSD ug/L 25.00 65.8 % 41-167 MSRPD ug/L 0.000 4.2% ≤32 Vinyl Acetate 5030B 03/21/22:203111VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/21/22:203111VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/21/22:203111VRG Blank ug/L ND <2 Xylenes o 5030B 03/21/22:203111VRG Blank ug/L ND <2 Page 13 of 15 April 13, 2022 Lab ID : CC 2280948 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 100 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.7 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.0 % 70-130 1,1,2-Trichloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 88.3 % 70-130 1,1-Dichloroethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 96.9 % 70-130 1,1-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 80-120 1,1-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.0 % 70-130 1,2,3-Trichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 518 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 279 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 83.8 % 70-130 1,2-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 86.8 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/21/22:204514VRG CCV ug/L 25.00 98.6 % 70-130 1,2-Dichloroethane-d4 8260B 03/21/22:204514VRG CCV ug/L 25.00 91.8 % 70-130 1,2-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 90.9 % 80-120 1,3,5-Trimethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 79.3 % 70-130 1,3-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 83.1 % 70-130 1,3-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 112 % 70-130 1,4-Dichlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 82.6 % 70-130 2,2-Dichloropropane 8260B 03/21/22:204514VRG CCV ug/L 25.00 112 % 70-130 2-Butanone (MEK) 8260B 03/21/22:204514VRG CCV ug/L 100.0 76.0 % 50-150 2-Chloroethylvinyl ether 8260B 03/21/22:204514VRG CCV ug/L 100.0 121 % 50-150 2-Chlorotoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 87.4 % 70-130 2-Hexanone 8260B 03/21/22:204514VRG CCV ug/L 100.0 135 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/21/22:204514VRG CCV ug/L 25.00 75.5 % 70-130 4-Chlorotoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 73.4 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/21/22:204514VRG CCV ug/L 100.0 117 % 50-150 Acetone 8260B 03/21/22:204514VRG CCV ug/L 100.0 73.8 % 50-150 Acrolein 8260B 03/21/22:204514VRG CCV ug/L 100.0 98.0 % 50-150 Acrylonitrile 8260B 03/21/22:204514VRG CCV ug/L 100.0 179 % 50-150 360 Benzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 103 % 70-130 Bromobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 86.0 % 70-130 Bromochloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.9 % 70-130 Bromodichloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 95.8 % 70-130 Bromoform 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.6 % 70-130 Carbon Disulfide 8260B 03/21/22:204514VRG CCV ug/L 100.0 83.4 % 50-150 Carbon Tetrachloride 8260B 03/21/22:204514VRG CCV ug/L 25.00 94.6 % 70-130 Chlorobenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/21/22:204514VRG CCV ug/L 25.00 94.5 % 70-130 Chloroform 8260B 03/21/22:204514VRG CCV ug/L 25.00 91.3 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.5 % 70-130 cis-1,2-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 102 % 70-130 cis-1,3-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 107 % 70-130 Dibromochloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 105 % 70-130 Dibromofluromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 82.5 % 70-130 Dibromomethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 99.4 % 70-130 Dichlorodifluoromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 70.6 % 70-130 Dichloromethane 8260B 03/21/22:204514VRG CCV ug/L 25.00 97.1 % 70-130 Ethyl tert-Butyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 109 % 50-150 Ethylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 80-120 Hexachlorobutadiene 8260B 03/21/22:204514VRG CCV ug/L 25.00 163 % 70-130 360 Isopropyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 118 % 50-150 Isopropylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 75.6 % 70-130 Page 14 of 15 April 13, 2022 Lab ID : CC 2280948 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/21/22:204514VRG CCV ug/L 25.00 108 % 70-130 n-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 85.1 % 70-130 n-Propylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 77.0 % 70-130 p-Isopropyltoluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 79.1 % 70-130 sec-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 76.5 % 70-130 Styrene 8260B 03/21/22:204514VRG CCV ug/L 25.00 111 % 70-130 TAME 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 50-150 tert-Butanol 8260B 03/21/22:204514VRG CCV ug/L 125.0 113 % 50-150 tert-Butylbenzene 8260B 03/21/22:204514VRG CCV ug/L 25.00 77.5 % 70-130 Tetrachloroethylene (PCE) 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 70-130 Toluene 8260B 03/21/22:204514VRG CCV ug/L 25.00 96.0 % 80-120 Toluene-d8 8260B 03/21/22:204514VRG CCV ug/L 25.00 102 % 70-130 trans-1,2-Dichloroethylene 8260B 03/21/22:204514VRG CCV ug/L 25.00 108 % 70-130 trans-1,3-Dichloropropene 8260B 03/21/22:204514VRG CCV ug/L 25.00 99.5 % 70-130 Trichloroethylene (TCE) 8260B 03/21/22:204514VRG CCV ug/L 25.00 110 % 70-130 Trichlorofluoromethane F-11 8260B 03/21/22:204514VRG CCV ug/L 25.00 76.5 % 70-130 Vinyl Acetate 8260B 03/21/22:204514VRG CCV ug/L 100.0 108 % 50-150 Vinyl Chloride 8260B 03/21/22:204514VRG CCV ug/L 25.00 81.9 % 80-120 Xylene m,p 8260B 03/21/22:204514VRG CCV ug/L 50.00 104 % 70-130 Xylenes o 8260B 03/21/22:204514VRG CCV ug/L 25.00 106 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 325 : The LCS was out of acceptance limits. Results may be biased low. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 15 of 15 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists July 12, 2022 Water Systems Consulting, Inc. Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Subject: Subcontract Analysis for FGL Lab No. CC 2282449 Enclosed please find results for the following sample(s) which were received by FGL. Sub Organic-EPA 8260l Please note that this analysis was performed by Zalco Laboratories, Inc. Thank you for using FGL Environmental. Sincerely, Cindy Aguirre Digitally signed by Cindy Aguirre Title: Customer Service Rep Date: 2022-07-12 Enclosure April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2281017 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 18 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (12 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-12-30 Depth 03/24/2022 03/24/2022 CC 2281017-001 GW B-12- 36 Depth 03/24/2022 03/24/2022 CC 2281017-002 GW B-12-45 Depth 03/24/2022 03/24/2022 CC 2281017-003 GW B-12- 54 Depth 03/24/2022 03/24/2022 CC 2281017-004 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 04/04/2022:203682 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Toluene-d8: 320 LCS not within Acceptance Range (AR). Data was accepted based on the BS/BSD recovery. The following note applies to Toluene-d8: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. The following note applies to Benzene: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 04/04/2022:204958 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrolein, Acrylonitrile, Hexachlorobutadiene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 18 April 13, 2022 Lab ID : CC 2281017 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 18 April 13, 2022 Lab ID : CC 2281017-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-12:25 Sampled By : Danny O Received On : March 24, 2022-11:27 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-12-30 Depth Project : SLO PCE B-12 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 89.8 78-125 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 104 85-124 % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 94.0 84-126 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 99.3 77-129 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 18 April 13, 2022 Lab ID : CC 2281017-001 Description : B-12-30 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 4 of 18 April 13, 2022 Lab ID : CC 2281017-001 Description : B-12-30 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 18 April 13, 2022 Lab ID : CC 2281017-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-12:55 Sampled By : Danny O Received On : March 24, 2022-11:27 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-12- 36 Depth Project : SLO PCE B-12 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 92.9 78-125 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 104 85-124 % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 105 84-126 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 98.7 77-129 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 18 April 13, 2022 Lab ID : CC 2281017-002 Description : B-12- 36 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 7 of 18 April 13, 2022 Lab ID : CC 2281017-002 Description : B-12- 36 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 18 April 13, 2022 Lab ID : CC 2281017-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-13:20 Sampled By : Danny O Received On : March 24, 2022-11:27 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-12-45 Depth Project : SLO PCE B-12 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 92.1 78-125 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 96.4 85-124 % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 153 84-126 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 91.4 77-129 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 18 April 13, 2022 Lab ID : CC 2281017-003 Description : B-12-45 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 10 of 18 April 13, 2022 Lab ID : CC 2281017-003 Description : B-12-45 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 18 April 13, 2022 Lab ID : CC 2281017-004 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-13:51 Sampled By : Danny O Received On : March 24, 2022-11:27 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-12- 54 Depth Project : SLO PCE B-12 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 97.1 78-125 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 102 85-124 % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 98.3 84-126 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 61.6 77-129 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 18 April 13, 2022 Lab ID : CC 2281017-004 Description : B-12- 54 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene 0.8 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 13 of 18 April 13, 2022 Lab ID : CC 2281017-004 Description : B-12- 54 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 14 of 18 This Page is to be Stamped April 13, 2022 Lab ID : CC 2281017 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 70.6 % 52-137 MS ug/L 25.00 86.2 % 25-179 (CC 2281024-001) MSD ug/L 25.00 74.9 % 25-179 MSRPD ug/L 0.000 14.1% ≤26 1,1-Dichloropropene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 04/04/22:203682VRG Blank ug/L 25.00 76.8 % 84-126 LCS ug/L 25.00 103 % 84-126 MS ug/L 25.00 90.1 % 84-126 (CC 2281024-001) MSD ug/L 25.00 107 % 84-126 MSRPD ug/L 0.000 17.4% ≤20.0 1,2-Dichloropropane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 04/04/22:203682VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 04/04/22:203682VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 2-Hexanone 5030B 04/04/22:203682VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 04/04/22:203682VRG Blank ug/L 25.00 92.2 % 78-125 LCS ug/L 25.00 95.1 % 78-125 MS ug/L 25.00 102 % 0-200 (CC 2281024-001) MSD ug/L 25.00 92.0 % 0-200 MSRPD ug/L 0.000 10.6% ≤20.0 4-Chlorotoluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 04/04/22:203682VRG Blank ug/L ND <10 Acetone 5030B 04/04/22:203682VRG Blank ug/L ND <50 Acrolein 5030B 04/04/22:203682VRG Blank ug/L ND <50 Acrylonitrile 5030B 04/04/22:203682VRG Blank ug/L ND <50 Benzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 106 % 60-134 MS ug/L 25.00 78.0 % 47-169 (CC 2281024-001) MSD ug/L 25.00 110 % 47-169 MSRPD ug/L 0.000 34.4% ≤24 435 Bromobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Bromoform 5030B 04/04/22:203682VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 04/04/22:203682VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 04/04/22:203682VRG Blank ug/L ND <1 Chlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 109 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 15 of 18 April 13, 2022 Lab ID : CC 2281017 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 105 % 31-212 (CC 2281024-001) MSD ug/L 25.00 113 % 31-212 MSRPD ug/L 0.000 7.8% ≤27 Chloroethane (Ethyl Chloride) 5030B 04/04/22:203682VRG Blank ug/L ND <1 Chloroform 5030B 04/04/22:203682VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <2 Dibromofluromethane 5030B 04/04/22:203682VRG Blank ug/L 25.00 96.8 % 85-124 LCS ug/L 25.00 101 % 85-124 MS ug/L 25.00 98.4 % 85-124 (CC 2281024-001) MSD ug/L 25.00 97.6 % 85-124 MSRPD ug/L 0.000 0.8% ≤20.0 Dibromomethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Dichloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 04/04/22:203682VRG Blank ug/L ND <2 Ethylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Freon-11 5030B 04/04/22:203682VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 04/04/22:203682VRG Blank ug/L ND <5 Isopropyl Ether 5030B 04/04/22:203682VRG Blank ug/L ND <5 Isopropylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 04/04/22:203682VRG Blank ug/L ND <2 n-Butylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Styrene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 TAME 5030B 04/04/22:203682VRG Blank ug/L ND <5 tert-Butanol 5030B 04/04/22:203682VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Toluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 70.4 % 56-131 MS ug/L 25.00 65.8 % 44-164 (CC 2281024-001) MSD ug/L 25.00 69.4 % 44-164 MSRPD ug/L 0.000 5.4% ≤30 Toluene-d8 5030B 04/04/22:203682VRG Blank ug/L 25.00 89.4 % 77-129 LCS ug/L 25.00 73.6 % 77-129 325 MS ug/L 25.00 72.3 % 77-129 435 (CC 2281024-001) MSD ug/L 25.00 69.7 % 77-129 435 MSRPD ug/L 0.000 3.7% ≤20 trans-1,2-Dichloroethylene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 99.0 % 61-123 MS ug/L 25.00 72.2 % 41-167 (CC 2281024-001) MSD ug/L 25.00 99.0 % 41-167 MSRPD ug/L 0.000 31.2% ≤32 Vinyl Acetate 5030B 04/04/22:203682VRG Blank ug/L ND <10 Vinyl Chloride 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 04/04/22:203682VRG Blank ug/L ND <2 Xylenes o 5030B 04/04/22:203682VRG Blank ug/L ND <2 Page 16 of 18 April 13, 2022 Lab ID : CC 2281017 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 92.0 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 04/04/22:204958VRG CCV ug/L 25.00 118 % 70-130 1,1,2,2-Tetrachloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 100 % 70-130 1,1,2-Trichloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 90.3 % 70-130 1,1-Dichloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 70-130 1,1-Dichloroethylene 8260B 04/04/22:204958VRG CCV ug/L 25.00 104 % 80-120 1,1-Dichloropropene 8260B 04/04/22:204958VRG CCV ug/L 25.00 93.2 % 70-130 1,2,3-Trichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 655 % 70-130 360 1,2,4-Trichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 256 % 70-130 360 1,2,4-Trimethylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 106 % 70-130 1,2-Dichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 04/04/22:204958VRG CCV ug/L 25.00 110 % 70-130 1,2-Dichloroethane-d4 8260B 04/04/22:204958VRG CCV ug/L 25.00 120 % 70-130 1,2-Dichloropropane 8260B 04/04/22:204958VRG CCV ug/L 25.00 120 % 80-120 1,3,5-Trimethylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 106 % 70-130 1,3-Dichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 98.7 % 70-130 1,3-Dichloropropane 8260B 04/04/22:204958VRG CCV ug/L 25.00 111 % 70-130 1,4-Dichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 109 % 70-130 2,2-Dichloropropane 8260B 04/04/22:204958VRG CCV ug/L 25.00 126 % 70-130 2-Butanone (MEK) 8260B 04/04/22:204958VRG CCV ug/L 100.0 149 % 50-150 2-Chloroethylvinyl ether 8260B 04/04/22:204958VRG CCV ug/L 100.0 137 % 50-150 2-Chlorotoluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 118 % 70-130 2-Hexanone 8260B 04/04/22:204958VRG CCV ug/L 100.0 145 % 50-150 4-Bromofluorobenzene (BFB) 8260B 04/04/22:204958VRG CCV ug/L 25.00 95.0 % 70-130 4-Chlorotoluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 04/04/22:204958VRG CCV ug/L 100.0 131 % 50-150 Acetone 8260B 04/04/22:204958VRG CCV ug/L 100.0 90.3 % 50-150 Acrolein 8260B 04/04/22:204958VRG CCV ug/L 100.0 206 % 50-150 360 Acrylonitrile 8260B 04/04/22:204958VRG CCV ug/L 100.0 291 % 50-150 360 Benzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 109 % 70-130 Bromobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 111 % 70-130 Bromochloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 91.8 % 70-130 Bromodichloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 95.2 % 70-130 Bromoform 8260B 04/04/22:204958VRG CCV ug/L 25.00 85.0 % 70-130 Bromomethane (Methyl Bromide) 8260B 04/04/22:204958VRG CCV ug/L 25.00 77.3 % 70-130 Carbon Disulfide 8260B 04/04/22:204958VRG CCV ug/L 100.0 80.1 % 50-150 Carbon Tetrachloride 8260B 04/04/22:204958VRG CCV ug/L 25.00 92.1 % 70-130 Chlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 89.9 % 70-130 Chloroethane (Ethyl Chloride) 8260B 04/04/22:204958VRG CCV ug/L 25.00 96.2 % 70-130 Chloroform 8260B 04/04/22:204958VRG CCV ug/L 25.00 94.2 % 80-120 Chloromethane(Methyl Chloride) 8260B 04/04/22:204958VRG CCV ug/L 25.00 95.4 % 70-130 cis-1,2-Dichloroethylene 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 70-130 cis-1,3-Dichloropropene 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 70-130 Dibromochloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 97.2 % 70-130 Dibromofluromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 94.7 % 70-130 Dibromomethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 126 % 70-130 Dichlorodifluoromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 124 % 70-130 Dichloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 97.3 % 70-130 Ethyl tert-Butyl Ether 8260B 04/04/22:204958VRG CCV ug/L 25.00 114 % 50-150 Ethylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 98.4 % 80-120 Hexachlorobutadiene 8260B 04/04/22:204958VRG CCV ug/L 25.00 170 % 70-130 360 Isopropyl Ether 8260B 04/04/22:204958VRG CCV ug/L 25.00 128 % 50-150 Isopropylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 Page 17 of 18 April 13, 2022 Lab ID : CC 2281017 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 04/04/22:204958VRG CCV ug/L 25.00 111 % 70-130 n-Butylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 106 % 70-130 n-Propylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 p-Isopropyltoluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 sec-Butylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 99.7 % 70-130 Styrene 8260B 04/04/22:204958VRG CCV ug/L 25.00 92.7 % 70-130 TAME 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 50-150 tert-Butanol 8260B 04/04/22:204958VRG CCV ug/L 125.0 100 % 50-150 tert-Butylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 103 % 70-130 Tetrachloroethylene (PCE) 8260B 04/04/22:204958VRG CCV ug/L 25.00 112 % 70-130 Toluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 91.5 % 80-120 Toluene-d8 8260B 04/04/22:204958VRG CCV ug/L 25.00 103 % 70-130 trans-1,2-Dichloroethylene 8260B 04/04/22:204958VRG CCV ug/L 25.00 104 % 70-130 trans-1,3-Dichloropropene 8260B 04/04/22:204958VRG CCV ug/L 25.00 107 % 70-130 Trichloroethylene (TCE) 8260B 04/04/22:204958VRG CCV ug/L 25.00 112 % 70-130 Trichlorofluoromethane F-11 8260B 04/04/22:204958VRG CCV ug/L 25.00 69.9 % 70-130 Vinyl Acetate 8260B 04/04/22:204958VRG CCV ug/L 100.0 144 % 50-150 Vinyl Chloride 8260B 04/04/22:204958VRG CCV ug/L 25.00 90.9 % 80-120 Xylene m,p 8260B 04/04/22:204958VRG CCV ug/L 50.00 90.8 % 70-130 Xylenes o 8260B 04/04/22:204958VRG CCV ug/L 25.00 90.8 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 325 : The LCS was out of acceptance limits. Results may be biased low. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 18 of 18 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2281040 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 18 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (12 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-13-20 Depth 03/24/2022 03/25/2022 CC 2281040-001 GW B-13-36 Depth 03/24/2022 03/25/2022 CC 2281040-002 GW B-13-56 Depth 03/24/2022 03/25/2022 CC 2281040-003 GW B-13-63 Depth 03/24/2022 03/25/2022 CC 2281040-004 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 04/05/2022:203701 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Benzene: 310 LCS above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. The following note applies to Toluene-d8: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 04/05/2022:204992 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, 2-Hexanone, Acrylonitrile, Dibromomethane, Hexachlorobutadiene, 2-Butano: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 18 April 13, 2022 Lab ID : CC 2281040 Water Systems Consulting, Inc. Customer : 8-1286 Discussion of Analytical Results: - Case Narrative - 04/13/22 - Due to the sample matrix for sample ID, B-13- 20 Depth, and B-13- 63 Depth, the preservative did not bring the pH to 2 pH units as required by the method. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 04.0 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 18 April 13, 2022 Lab ID : CC 2281040-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-10:50 Sampled By : Dan O Received On : March 25, 2022-09:47 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-13-20 Depth Project : SLO PCE B-13 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 95.4 78-125* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromofluoromethane‡ 91.5 85-124* % 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane-d4‡ 97.3 84-126* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene-d8‡ 146 77-129* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Acetone ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrolein ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrylonitrile ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromochloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromodichloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromoform ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butanol ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Butanone (MEK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 sec-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Disulfide ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Tetrachloride ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroform ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromochloromethane ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dichlorodifluoromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 18 April 13, 2022 Lab ID : CC 2281040-001 Description : B-13-20 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Hexachlorobutadiene ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Hexanone ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Isopropylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 p-Isopropyltoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methylene Chloride ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Propylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Styrene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Tetrachloroethylene 2 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichlorofluoromethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Acetate ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Chloride ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes m,p ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Page 4 of 18 April 13, 2022 Lab ID : CC 2281040-001 Description : B-13-20 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chloroethylvinylether ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 18 April 13, 2022 Lab ID : CC 2281040-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-11:32 Sampled By : Dan O Received On : March 25, 2022-09:47 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-13-36 Depth Project : SLO PCE B-13 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 97.1 78-125 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromofluoromethane‡ 97.0 85-124 % 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane-d4‡ 88.8 84-126 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene-d8‡ 142 77-129 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Acetone ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrolein ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrylonitrile ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Benzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromochloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromodichloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromoform ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromomethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butanol ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Butanone (MEK) ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 sec-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Disulfide ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Tetrachloride ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroethane ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroform ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chlorotoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Chlorotoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromochloromethane ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromomethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 18 April 13, 2022 Lab ID : CC 2281040-002 Description : B-13-36 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl Benzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Hexachlorobutadiene ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Hexanone ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Isopropylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methylene Chloride ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Propylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Styrene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Tetrachloroethylene 2.3 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichlorofluoromethane ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Acetate ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Chloride ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes m,p ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Page 7 of 18 April 13, 2022 Lab ID : CC 2281040-002 Description : B-13-36 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chloroethylvinylether ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 18 April 13, 2022 Lab ID : CC 2281040-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-12:07 Sampled By : Dan O Received On : March 25, 2022-09:47 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-13-56 Depth Project : SLO PCE B-13 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 95.7 78-125* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromofluoromethane‡ 89.0 85-124* % 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane-d4‡ 97.0 84-126* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene-d8‡ 144 77-129* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Acetone ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrolein ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrylonitrile ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromochloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromodichloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromoform ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butanol ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Butanone (MEK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 sec-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Disulfide ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Tetrachloride ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroform ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromochloromethane ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dichlorodifluoromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 18 April 13, 2022 Lab ID : CC 2281040-003 Description : B-13-56 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Hexachlorobutadiene ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Hexanone ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Isopropylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 p-Isopropyltoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methylene Chloride ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Propylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Styrene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Tetrachloroethylene 1 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichlorofluoromethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Acetate ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Chloride ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes m,p ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Page 10 of 18 April 13, 2022 Lab ID : CC 2281040-003 Description : B-13-56 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chloroethylvinylether ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 18 April 13, 2022 Lab ID : CC 2281040-004 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-12:55 Sampled By : Dan O Received On : March 25, 2022-09:47 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-13-63 Depth Project : SLO PCE B-13 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 97.5 78-125* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromofluoromethane‡ 93.8 85-124* % 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane-d4‡ 100 84-126* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene-d8‡ 145 77-129* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Acetone ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrolein ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrylonitrile ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromochloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromodichloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromoform ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butanol ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Butanone (MEK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 sec-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Disulfide ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Tetrachloride ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroform ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromochloromethane ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dichlorodifluoromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 18 April 13, 2022 Lab ID : CC 2281040-004 Description : B-13-63 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Hexachlorobutadiene ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Hexanone ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Isopropylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 p-Isopropyltoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methylene Chloride ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Propylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Styrene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Tetrachloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichlorofluoromethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Acetate ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Chloride ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes m,p ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Page 13 of 18 April 13, 2022 Lab ID : CC 2281040-004 Description : B-13-63 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chloroethylvinylether ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 14 of 18 This Page is to be Stamped April 13, 2022 Lab ID : CC 2281040 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 111 % 52-137 MS ug/L 25.00 82.3 % 25-179 (CC 2281040-002) MSD ug/L 25.00 87.3 % 25-179 MSRPD ug/L 0.000 5.9% ≤26 1,1-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 04/05/22:203701VRG Blank ug/L 25.00 94.8 % 84-126 LCS ug/L 25.00 109 % 84-126 MS ug/L 25.00 98.9 % 84-126 (CC 2281040-002) MSD ug/L 25.00 94.8 % 84-126 MSRPD ug/L 0.000 4.2% ≤20.0 1,2-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 04/05/22:203701VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 04/05/22:203701VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2-Hexanone 5030B 04/05/22:203701VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 04/05/22:203701VRG Blank ug/L 25.00 97.8 % 78-125 LCS ug/L 25.00 90.7 % 78-125 MS ug/L 25.00 99.4 % 0-200 (CC 2281040-002) MSD ug/L 25.00 101 % 0-200 MSRPD ug/L 0.000 2.1% ≤20.0 4-Chlorotoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 04/05/22:203701VRG Blank ug/L ND <10 Acetone 5030B 04/05/22:203701VRG Blank ug/L ND <50 Acrolein 5030B 04/05/22:203701VRG Blank ug/L ND <50 Acrylonitrile 5030B 04/05/22:203701VRG Blank ug/L ND <50 Benzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 147 % 60-134 330 MS ug/L 25.00 105 % 47-169 (CC 2281040-002) MSD ug/L 25.00 100 % 47-169 MSRPD ug/L 0.000 4.6% ≤24 Bromobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromoform 5030B 04/05/22:203701VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 04/05/22:203701VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 121 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 15 of 18 April 13, 2022 Lab ID : CC 2281040 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 102 % 31-212 (CC 2281040-002) MSD ug/L 25.00 102 % 31-212 MSRPD ug/L 0.000 0.1% ≤27 Chloroethane (Ethyl Chloride) 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chloroform 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <2 Dibromofluromethane 5030B 04/05/22:203701VRG Blank ug/L 25.00 90.7 % 85-124 LCS ug/L 25.00 99.2 % 85-124 MS ug/L 25.00 93.5 % 85-124 (CC 2281040-002) MSD ug/L 25.00 92.1 % 85-124 MSRPD ug/L 0.000 1.5% ≤20.0 Dibromomethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dichloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 04/05/22:203701VRG Blank ug/L ND <2 Ethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Freon-11 5030B 04/05/22:203701VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 04/05/22:203701VRG Blank ug/L ND <5 Isopropyl Ether 5030B 04/05/22:203701VRG Blank ug/L ND <5 Isopropylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 04/05/22:203701VRG Blank ug/L ND <2 n-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Styrene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 TAME 5030B 04/05/22:203701VRG Blank ug/L ND <5 tert-Butanol 5030B 04/05/22:203701VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Toluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 94.6 % 56-131 MS ug/L 25.00 127 % 44-164 (CC 2281040-002) MSD ug/L 25.00 124 % 44-164 MSRPD ug/L 0.000 2.4% ≤30 Toluene-d8 5030B 04/05/22:203701VRG Blank ug/L 25.00 142 % 77-129 LCS ug/L 25.00 94.3 % 77-129 MS ug/L 25.00 139 % 77-129 435 (CC 2281040-002) MSD ug/L 25.00 140 % 77-129 435 MSRPD ug/L 0.000 0.9% ≤20 trans-1,2-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 104 % 61-123 MS ug/L 25.00 98.3 % 41-167 (CC 2281040-002) MSD ug/L 25.00 92.0 % 41-167 MSRPD ug/L 0.000 6.6% ≤32 Vinyl Acetate 5030B 04/05/22:203701VRG Blank ug/L ND <10 Vinyl Chloride 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 04/05/22:203701VRG Blank ug/L ND <2 Xylenes o 5030B 04/05/22:203701VRG Blank ug/L ND <2 Page 16 of 18 April 13, 2022 Lab ID : CC 2281040 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 106 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.2 % 70-130 1,1,2,2-Tetrachloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 1,1,2-Trichloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 106 % 70-130 1,1-Dichloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.1 % 70-130 1,1-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 91.2 % 80-120 1,1-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 97.7 % 70-130 1,2,3-Trichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 665 % 70-130 360 1,2,4-Trichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 264 % 70-130 360 1,2,4-Trimethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.6 % 70-130 1,2-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 04/05/22:204992VRG CCV ug/L 25.00 123 % 70-130 1,2-Dichloroethane-d4 8260B 04/05/22:204992VRG CCV ug/L 25.00 125 % 70-130 1,2-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 113 % 80-120 1,3,5-Trimethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 95.8 % 70-130 1,3-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 94.7 % 70-130 1,3-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 120 % 70-130 1,4-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 2,2-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 114 % 70-130 2-Butanone (MEK) 8260B 04/05/22:204992VRG CCV ug/L 100.0 155 % 50-150 360 2-Chloroethylvinyl ether 8260B 04/05/22:204992VRG CCV ug/L 100.0 136 % 50-150 2-Chlorotoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 110 % 70-130 2-Hexanone 8260B 04/05/22:204992VRG CCV ug/L 100.0 154 % 50-150 360 4-Bromofluorobenzene (BFB) 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.4 % 70-130 4-Chlorotoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 99.8 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 04/05/22:204992VRG CCV ug/L 100.0 133 % 50-150 Acetone 8260B 04/05/22:204992VRG CCV ug/L 100.0 76.6 % 50-150 Acrolein 8260B 04/05/22:204992VRG CCV ug/L 100.0 129 % 50-150 Acrylonitrile 8260B 04/05/22:204992VRG CCV ug/L 100.0 171 % 50-150 360 Benzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 70-130 Bromobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Bromochloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.7 % 70-130 Bromodichloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Bromoform 8260B 04/05/22:204992VRG CCV ug/L 25.00 103 % 70-130 Bromomethane (Methyl Bromide) 8260B 04/05/22:204992VRG CCV ug/L 25.00 81.0 % 70-130 Carbon Disulfide 8260B 04/05/22:204992VRG CCV ug/L 100.0 62.3 % 50-150 Carbon Tetrachloride 8260B 04/05/22:204992VRG CCV ug/L 25.00 105 % 70-130 Chlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.6 % 70-130 Chloroethane (Ethyl Chloride) 8260B 04/05/22:204992VRG CCV ug/L 25.00 100 % 70-130 Chloroform 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.6 % 80-120 Chloromethane(Methyl Chloride) 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.8 % 70-130 cis-1,2-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.3 % 70-130 cis-1,3-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 110 % 70-130 Dibromochloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 111 % 70-130 Dibromofluromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.2 % 70-130 Dibromomethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 146 % 70-130 360 Dichlorodifluoromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 102 % 70-130 Dichloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 97.9 % 70-130 Ethyl tert-Butyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 50-150 Ethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 102 % 80-120 Hexachlorobutadiene 8260B 04/05/22:204992VRG CCV ug/L 25.00 174 % 70-130 360 Isopropyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 124 % 50-150 Isopropylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 88.7 % 70-130 Page 17 of 18 April 13, 2022 Lab ID : CC 2281040 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 70-130 n-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.1 % 70-130 n-Propylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 87.7 % 70-130 p-Isopropyltoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 90.9 % 70-130 sec-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 86.1 % 70-130 Styrene 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 TAME 8260B 04/05/22:204992VRG CCV ug/L 25.00 129 % 50-150 tert-Butanol 8260B 04/05/22:204992VRG CCV ug/L 125.0 109 % 50-150 tert-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 88.5 % 70-130 Tetrachloroethylene (PCE) 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.4 % 70-130 Toluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 95.4 % 80-120 Toluene-d8 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 trans-1,2-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.2 % 70-130 trans-1,3-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 117 % 70-130 Trichloroethylene (TCE) 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Trichlorofluoromethane F-11 8260B 04/05/22:204992VRG CCV ug/L 25.00 71.0 % 70-130 Vinyl Acetate 8260B 04/05/22:204992VRG CCV ug/L 100.0 113 % 50-150 Vinyl Chloride 8260B 04/05/22:204992VRG CCV ug/L 25.00 87.8 % 80-120 Xylene m,p 8260B 04/05/22:204992VRG CCV ug/L 50.00 98.2 % 70-130 Xylenes o 8260B 04/05/22:204992VRG CCV ug/L 25.00 101 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 330 : The LCS was out of acceptance limits. Results may be biased high. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 18 of 18 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2281067 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 12 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (6 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-14-49 Depth 03/28/2022 03/29/2022 CC 2281067-001 GW B-14-52 Depth 03/28/2022 03/29/2022 CC 2281067-002 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 04/05/2022:203701 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Benzene: 310 LCS above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. The following note applies to Toluene-d8: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 04/05/2022:204992 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, 2-Hexanone, Acrylonitrile, Dibromomethane, Hexachlorobutadiene, 2-Butano: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 12 April 13, 2022 Lab ID : CC 2281067 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 12 April 13, 2022 Lab ID : CC 2281067-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 28, 2022-10:55 Sampled By : Dan O Received On : March 29, 2022-10:56 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-14-49 Depth Project : SLO PCE B-14 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 94.6 78-125 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromofluoromethane‡ 86.8 85-124 % 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane-d4‡ 93.0 84-126 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene-d8‡ 147 77-129 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Acetone ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrolein ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrylonitrile ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Benzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromochloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromodichloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromoform ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromomethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butanol ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Butanone (MEK) ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 sec-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Disulfide ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Tetrachloride ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroethane ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroform ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chlorotoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Chlorotoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromochloromethane ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromomethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 12 April 13, 2022 Lab ID : CC 2281067-001 Description : B-14-49 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl Benzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Hexachlorobutadiene ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Hexanone ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Isopropylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methylene Chloride ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Propylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Styrene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Tetrachloroethylene 2.0 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichlorofluoromethane ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Acetate ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Chloride ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes m,p ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Page 4 of 12 April 13, 2022 Lab ID : CC 2281067-001 Description : B-14-49 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chloroethylvinylether ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 12 April 13, 2022 Lab ID : CC 2281067-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 28, 2022-11:32 Sampled By : Dan O Received On : March 29, 2022-10:56 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-14-52 Depth Project : SLO PCE B-14 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 95.4 78-125* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromofluoromethane‡ 92.8 85-124* % 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane-d4‡ 102 84-126* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene-d8‡ 150 77-129* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Acetone ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrolein ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrylonitrile ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromochloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromodichloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromoform ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butanol ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Butanone (MEK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 sec-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Disulfide ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Tetrachloride ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroform ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromochloromethane ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dichlorodifluoromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 12 April 13, 2022 Lab ID : CC 2281067-002 Description : B-14-52 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Hexachlorobutadiene ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Hexanone ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Isopropylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 p-Isopropyltoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methylene Chloride ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Propylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Styrene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Tetrachloroethylene 3 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichlorofluoromethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Acetate ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Chloride ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes m,p ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Page 7 of 12 April 13, 2022 Lab ID : CC 2281067-002 Description : B-14-52 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chloroethylvinylether ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 12 This Page is to be Stamped April 13, 2022 Lab ID : CC 2281067 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 111 % 52-137 MS ug/L 25.00 82.3 % 25-179 (CC 2281040-002) MSD ug/L 25.00 87.3 % 25-179 MSRPD ug/L 0.000 5.9% ≤26 1,1-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 04/05/22:203701VRG Blank ug/L 25.00 94.8 % 84-126 LCS ug/L 25.00 109 % 84-126 MS ug/L 25.00 98.9 % 84-126 (CC 2281040-002) MSD ug/L 25.00 94.8 % 84-126 MSRPD ug/L 0.000 4.2% ≤20.0 1,2-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 04/05/22:203701VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 04/05/22:203701VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2-Hexanone 5030B 04/05/22:203701VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 04/05/22:203701VRG Blank ug/L 25.00 97.8 % 78-125 LCS ug/L 25.00 90.7 % 78-125 MS ug/L 25.00 99.4 % 0-200 (CC 2281040-002) MSD ug/L 25.00 101 % 0-200 MSRPD ug/L 0.000 2.1% ≤20.0 4-Chlorotoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 04/05/22:203701VRG Blank ug/L ND <10 Acetone 5030B 04/05/22:203701VRG Blank ug/L ND <50 Acrolein 5030B 04/05/22:203701VRG Blank ug/L ND <50 Acrylonitrile 5030B 04/05/22:203701VRG Blank ug/L ND <50 Benzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 147 % 60-134 330 MS ug/L 25.00 105 % 47-169 (CC 2281040-002) MSD ug/L 25.00 100 % 47-169 MSRPD ug/L 0.000 4.6% ≤24 Bromobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromoform 5030B 04/05/22:203701VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 04/05/22:203701VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 121 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 12 April 13, 2022 Lab ID : CC 2281067 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 102 % 31-212 (CC 2281040-002) MSD ug/L 25.00 102 % 31-212 MSRPD ug/L 0.000 0.1% ≤27 Chloroethane (Ethyl Chloride) 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chloroform 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <2 Dibromofluromethane 5030B 04/05/22:203701VRG Blank ug/L 25.00 90.7 % 85-124 LCS ug/L 25.00 99.2 % 85-124 MS ug/L 25.00 93.5 % 85-124 (CC 2281040-002) MSD ug/L 25.00 92.1 % 85-124 MSRPD ug/L 0.000 1.5% ≤20.0 Dibromomethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dichloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 04/05/22:203701VRG Blank ug/L ND <2 Ethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Freon-11 5030B 04/05/22:203701VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 04/05/22:203701VRG Blank ug/L ND <5 Isopropyl Ether 5030B 04/05/22:203701VRG Blank ug/L ND <5 Isopropylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 04/05/22:203701VRG Blank ug/L ND <2 n-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Styrene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 TAME 5030B 04/05/22:203701VRG Blank ug/L ND <5 tert-Butanol 5030B 04/05/22:203701VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Toluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 94.6 % 56-131 MS ug/L 25.00 127 % 44-164 (CC 2281040-002) MSD ug/L 25.00 124 % 44-164 MSRPD ug/L 0.000 2.4% ≤30 Toluene-d8 5030B 04/05/22:203701VRG Blank ug/L 25.00 142 % 77-129 LCS ug/L 25.00 94.3 % 77-129 MS ug/L 25.00 139 % 77-129 435 (CC 2281040-002) MSD ug/L 25.00 140 % 77-129 435 MSRPD ug/L 0.000 0.9% ≤20 trans-1,2-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 104 % 61-123 MS ug/L 25.00 98.3 % 41-167 (CC 2281040-002) MSD ug/L 25.00 92.0 % 41-167 MSRPD ug/L 0.000 6.6% ≤32 Vinyl Acetate 5030B 04/05/22:203701VRG Blank ug/L ND <10 Vinyl Chloride 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 04/05/22:203701VRG Blank ug/L ND <2 Xylenes o 5030B 04/05/22:203701VRG Blank ug/L ND <2 Page 10 of 12 April 13, 2022 Lab ID : CC 2281067 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 106 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.2 % 70-130 1,1,2,2-Tetrachloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 1,1,2-Trichloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 106 % 70-130 1,1-Dichloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.1 % 70-130 1,1-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 91.2 % 80-120 1,1-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 97.7 % 70-130 1,2,3-Trichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 665 % 70-130 360 1,2,4-Trichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 264 % 70-130 360 1,2,4-Trimethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.6 % 70-130 1,2-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 04/05/22:204992VRG CCV ug/L 25.00 123 % 70-130 1,2-Dichloroethane-d4 8260B 04/05/22:204992VRG CCV ug/L 25.00 125 % 70-130 1,2-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 113 % 80-120 1,3,5-Trimethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 95.8 % 70-130 1,3-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 94.7 % 70-130 1,3-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 120 % 70-130 1,4-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 2,2-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 114 % 70-130 2-Butanone (MEK) 8260B 04/05/22:204992VRG CCV ug/L 100.0 155 % 50-150 360 2-Chloroethylvinyl ether 8260B 04/05/22:204992VRG CCV ug/L 100.0 136 % 50-150 2-Chlorotoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 110 % 70-130 2-Hexanone 8260B 04/05/22:204992VRG CCV ug/L 100.0 154 % 50-150 360 4-Bromofluorobenzene (BFB) 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.4 % 70-130 4-Chlorotoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 99.8 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 04/05/22:204992VRG CCV ug/L 100.0 133 % 50-150 Acetone 8260B 04/05/22:204992VRG CCV ug/L 100.0 76.6 % 50-150 Acrolein 8260B 04/05/22:204992VRG CCV ug/L 100.0 129 % 50-150 Acrylonitrile 8260B 04/05/22:204992VRG CCV ug/L 100.0 171 % 50-150 360 Benzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 70-130 Bromobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Bromochloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.7 % 70-130 Bromodichloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Bromoform 8260B 04/05/22:204992VRG CCV ug/L 25.00 103 % 70-130 Bromomethane (Methyl Bromide) 8260B 04/05/22:204992VRG CCV ug/L 25.00 81.0 % 70-130 Carbon Disulfide 8260B 04/05/22:204992VRG CCV ug/L 100.0 62.3 % 50-150 Carbon Tetrachloride 8260B 04/05/22:204992VRG CCV ug/L 25.00 105 % 70-130 Chlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.6 % 70-130 Chloroethane (Ethyl Chloride) 8260B 04/05/22:204992VRG CCV ug/L 25.00 100 % 70-130 Chloroform 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.6 % 80-120 Chloromethane(Methyl Chloride) 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.8 % 70-130 cis-1,2-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.3 % 70-130 cis-1,3-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 110 % 70-130 Dibromochloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 111 % 70-130 Dibromofluromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.2 % 70-130 Dibromomethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 146 % 70-130 360 Dichlorodifluoromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 102 % 70-130 Dichloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 97.9 % 70-130 Ethyl tert-Butyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 50-150 Ethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 102 % 80-120 Hexachlorobutadiene 8260B 04/05/22:204992VRG CCV ug/L 25.00 174 % 70-130 360 Isopropyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 124 % 50-150 Isopropylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 88.7 % 70-130 Page 11 of 12 April 13, 2022 Lab ID : CC 2281067 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 70-130 n-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.1 % 70-130 n-Propylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 87.7 % 70-130 p-Isopropyltoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 90.9 % 70-130 sec-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 86.1 % 70-130 Styrene 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 TAME 8260B 04/05/22:204992VRG CCV ug/L 25.00 129 % 50-150 tert-Butanol 8260B 04/05/22:204992VRG CCV ug/L 125.0 109 % 50-150 tert-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 88.5 % 70-130 Tetrachloroethylene (PCE) 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.4 % 70-130 Toluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 95.4 % 80-120 Toluene-d8 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 trans-1,2-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.2 % 70-130 trans-1,3-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 117 % 70-130 Trichloroethylene (TCE) 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Trichlorofluoromethane F-11 8260B 04/05/22:204992VRG CCV ug/L 25.00 71.0 % 70-130 Vinyl Acetate 8260B 04/05/22:204992VRG CCV ug/L 100.0 113 % 50-150 Vinyl Chloride 8260B 04/05/22:204992VRG CCV ug/L 25.00 87.8 % 80-120 Xylene m,p 8260B 04/05/22:204992VRG CCV ug/L 50.00 98.2 % 70-130 Xylenes o 8260B 04/05/22:204992VRG CCV ug/L 25.00 101 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 330 : The LCS was out of acceptance limits. Results may be biased high. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 12 of 12 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280977 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-15-38 Depth 03/21/2022 03/21/2022 CC 2280977-001 GW B-15-52 Depth 03/21/2022 03/21/2022 CC 2280977-002 GW B-15-55_Depth 03/21/2022 03/21/2022 CC 2280977-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/31/2022:203560 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to 1,2,3-Trichlorobenzene: 210 The method blank was positive. However, samples reported were either ten times greater than the blank concentration or non detect and accepted. 8260B 03/31/2022:204863 All analysis quality controls are within established criteria, except: The following note applies to 1,1-Dichloroethane, 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrylonitrile, Hexachlorobutadiene, Isopropyl Ether,: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 13, 2022 Lab ID : CC 2280977 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 15 April 13, 2022 Lab ID : CC 2280977-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 21, 2022-13:55 Sampled By : Alex S Received On : March 21, 2022-15:56 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-15-38 Depth Project : SLO PCE B-15 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 93.6 78-125 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromofluoromethane‡ 99.2 85-124 % 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane-d4‡ 99.9 84-126 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene-d8‡ 87.0 77-129 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Acetone ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrolein ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrylonitrile ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Benzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromochloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromodichloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromoform ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromomethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butanol ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Butanone (MEK) ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 sec-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Disulfide ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Tetrachloride ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroethane ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroform ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chlorotoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Chlorotoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromochloromethane ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromomethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 13, 2022 Lab ID : CC 2280977-001 Description : B-15-38 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl Benzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Hexachlorobutadiene ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Hexanone ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Isopropylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methylene Chloride ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Propylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Styrene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Tetrachloroethylene 1.0 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichlorofluoromethane ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Acetate ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Chloride ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes m,p ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Page 4 of 15 April 13, 2022 Lab ID : CC 2280977-001 Description : B-15-38 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chloroethylvinylether ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 13, 2022 Lab ID : CC 2280977-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 21, 2022-14:17 Sampled By : Alex S Received On : March 21, 2022-15:56 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-15-52 Depth Project : SLO PCE B-15 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 105 78-125* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromofluoromethane‡ 99.2 85-124* % 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane-d4‡ 98.4 84-126* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene-d8‡ 88.8 77-129* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Acetone ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrolein ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrylonitrile ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromochloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromodichloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromoform ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butanol ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Butanone (MEK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 sec-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Disulfide ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Tetrachloride ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroform ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromochloromethane ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dichlorodifluoromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 13, 2022 Lab ID : CC 2280977-002 Description : B-15-52 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Hexachlorobutadiene ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Hexanone ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Isopropylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 p-Isopropyltoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methylene Chloride ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Propylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Styrene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Tetrachloroethylene 2 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichlorofluoromethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Acetate ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Chloride ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes m,p ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Page 7 of 15 April 13, 2022 Lab ID : CC 2280977-002 Description : B-15-52 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chloroethylvinylether ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 13, 2022 Lab ID : CC 2280977-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 21, 2022-14:49 Sampled By : Alex S Received On : March 21, 2022-15:56 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-15-55_Depth Project : SLO PCE B-15 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 92.4 78-125* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromofluoromethane‡ 100 85-124* % 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane-d4‡ 110 84-126* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene-d8‡ 90.8 77-129* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Acetone ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrolein ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrylonitrile ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromochloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromodichloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromoform ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butanol ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Butanone (MEK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 sec-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Disulfide ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Tetrachloride ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroform ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromochloromethane ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dichlorodifluoromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 13, 2022 Lab ID : CC 2280977-003 Description : B-15-55_Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Hexachlorobutadiene ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Hexanone ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Isopropylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 p-Isopropyltoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methylene Chloride ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Propylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Styrene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Tetrachloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichlorofluoromethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Acetate ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Chloride ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes m,p ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Page 10 of 15 April 13, 2022 Lab ID : CC 2280977-003 Description : B-15-55_Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chloroethylvinylether ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 13, 2022 Lab ID : CC 2280977 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 84.3 % 52-137 MS ug/L 25.00 86.6 % 25-179 (CC 2280962-001) MSD ug/L 25.00 83.2 % 25-179 MSRPD ug/L 0.000 4.0% ≤26 1,1-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L 15.5 10 210 1,2,4-Trichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/31/22:203560VRG Blank ug/L 25.00 123 % 84-126 LCS ug/L 25.00 110 % 84-126 MS ug/L 25.00 106 % 84-126 (CC 2280962-001) MSD ug/L 25.00 106 % 84-126 MSRPD ug/L 0.000 0.1% ≤20.0 1,2-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/31/22:203560VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/31/22:203560VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/31/22:203560VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/31/22:203560VRG Blank ug/L 25.00 103 % 78-125 LCS ug/L 25.00 95.5 % 78-125 MS ug/L 25.00 99.4 % 0-200 (CC 2280962-001) MSD ug/L 25.00 91.2 % 0-200 MSRPD ug/L 0.000 8.6% ≤20.0 4-Chlorotoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/31/22:203560VRG Blank ug/L ND <10 Acetone 5030B 03/31/22:203560VRG Blank ug/L ND <50 Acrolein 5030B 03/31/22:203560VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/31/22:203560VRG Blank ug/L ND <50 Benzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 128 % 60-134 MS ug/L 25.00 92.2 % 47-169 (CC 2280962-001) MSD ug/L 25.00 88.9 % 47-169 MSRPD ug/L 0.000 3.7% ≤24 Bromobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromoform 5030B 03/31/22:203560VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/31/22:203560VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 122 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 13, 2022 Lab ID : CC 2280977 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 103 % 31-212 (CC 2280962-001) MSD ug/L 25.00 101 % 31-212 MSRPD ug/L 0.000 2.2% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chloroform 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/31/22:203560VRG Blank ug/L 25.00 92.5 % 85-124 LCS ug/L 25.00 95.1 % 85-124 MS ug/L 25.00 99.5 % 85-124 (CC 2280962-001) MSD ug/L 25.00 98.4 % 85-124 MSRPD ug/L 0.000 1.1% ≤20.0 Dibromomethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/31/22:203560VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Freon-11 5030B 03/31/22:203560VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/31/22:203560VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/31/22:203560VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/31/22:203560VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Styrene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 TAME 5030B 03/31/22:203560VRG Blank ug/L ND <5 tert-Butanol 5030B 03/31/22:203560VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Toluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 86.4 % 56-131 MS ug/L 25.00 83.5 % 44-164 (CC 2280962-001) MSD ug/L 25.00 78.2 % 44-164 MSRPD ug/L 0.000 6.5% ≤30 Toluene-d8 5030B 03/31/22:203560VRG Blank ug/L 25.00 93.8 % 77-129 LCS ug/L 25.00 84.2 % 77-129 MS ug/L 25.00 94.2 % 77-129 (CC 2280962-001) MSD ug/L 25.00 95.2 % 77-129 MSRPD ug/L 0.000 1.1% ≤20 trans-1,2-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 113 % 61-123 MS ug/L 25.00 88.8 % 41-167 (CC 2280962-001) MSD ug/L 25.00 87.0 % 41-167 MSRPD ug/L 0.000 2.0% ≤32 Vinyl Acetate 5030B 03/31/22:203560VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/31/22:203560VRG Blank ug/L ND <2 Xylenes o 5030B 03/31/22:203560VRG Blank ug/L ND <2 Page 13 of 15 April 13, 2022 Lab ID : CC 2280977 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/31/22:204863VRG CCV ug/L 25.00 114 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 1,1,2-Trichloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 1,1-Dichloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 155 % 70-130 360 1,1-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 119 % 80-120 1,1-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 114 % 70-130 1,2,3-Trichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 554 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 260 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 1,2-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/31/22:204863VRG CCV ug/L 25.00 127 % 70-130 1,2-Dichloroethane-d4 8260B 03/31/22:204863VRG CCV ug/L 25.00 118 % 70-130 1,2-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.3 % 80-120 1,3,5-Trimethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 105 % 70-130 1,3-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.8 % 70-130 1,3-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 115 % 70-130 1,4-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 2,2-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 130 % 70-130 2-Butanone (MEK) 8260B 03/31/22:204863VRG CCV ug/L 100.0 91.6 % 50-150 2-Chloroethylvinyl ether 8260B 03/31/22:204863VRG CCV ug/L 100.0 113 % 50-150 2-Chlorotoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 118 % 70-130 2-Hexanone 8260B 03/31/22:204863VRG CCV ug/L 100.0 133 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/31/22:204863VRG CCV ug/L 25.00 93.9 % 70-130 4-Chlorotoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 106 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/31/22:204863VRG CCV ug/L 100.0 106 % 50-150 Acetone 8260B 03/31/22:204863VRG CCV ug/L 100.0 98.1 % 50-150 Acrolein 8260B 03/31/22:204863VRG CCV ug/L 100.0 139 % 50-150 Acrylonitrile 8260B 03/31/22:204863VRG CCV ug/L 100.0 164 % 50-150 360 Benzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 115 % 70-130 Bromobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 110 % 70-130 Bromochloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 97.1 % 70-130 Bromodichloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Bromoform 8260B 03/31/22:204863VRG CCV ug/L 25.00 82.6 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/31/22:204863VRG CCV ug/L 25.00 79.2 % 70-130 Carbon Disulfide 8260B 03/31/22:204863VRG CCV ug/L 100.0 67.4 % 50-150 Carbon Tetrachloride 8260B 03/31/22:204863VRG CCV ug/L 25.00 111 % 70-130 Chlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Chloroform 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/31/22:204863VRG CCV ug/L 25.00 89.4 % 70-130 cis-1,2-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 cis-1,3-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 117 % 70-130 Dibromochloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.7 % 70-130 Dibromofluromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 96.7 % 70-130 Dibromomethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Dichlorodifluoromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 84.9 % 70-130 Dichloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Ethyl tert-Butyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 147 % 50-150 Ethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 112 % 80-120 Hexachlorobutadiene 8260B 03/31/22:204863VRG CCV ug/L 25.00 187 % 70-130 360 Isopropyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 205 % 50-150 360 Isopropylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Page 14 of 15 April 13, 2022 Lab ID : CC 2280977 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 132 % 70-130 360 n-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 n-Propylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 101 % 70-130 p-Isopropyltoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 sec-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 97.7 % 70-130 Styrene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 TAME 8260B 03/31/22:204863VRG CCV ug/L 25.00 172 % 50-150 360 tert-Butanol 8260B 03/31/22:204863VRG CCV ug/L 125.0 125 % 50-150 tert-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Tetrachloroethylene (PCE) 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Toluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 80-120 Toluene-d8 8260B 03/31/22:204863VRG CCV ug/L 25.00 98.2 % 70-130 trans-1,2-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 116 % 70-130 trans-1,3-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 125 % 70-130 Trichloroethylene (TCE) 8260B 03/31/22:204863VRG CCV ug/L 25.00 117 % 70-130 Trichlorofluoromethane F-11 8260B 03/31/22:204863VRG CCV ug/L 25.00 70.1 % 70-130 Vinyl Acetate 8260B 03/31/22:204863VRG CCV ug/L 100.0 113 % 50-150 Vinyl Chloride 8260B 03/31/22:204863VRG CCV ug/L 25.00 90.5 % 80-120 Xylene m,p 8260B 03/31/22:204863VRG CCV ug/L 50.00 108 % 70-130 Xylenes o 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 210 : The method blank was positive. However, samples reported were either ten times greater than the blank concentration or non detect and accepted. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 15 of 15 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280961 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-16-56 Depth 03/18/2022 03/18/2022 CC 2280961-001 GW B-16-48 Depth 03/18/2022 03/18/2022 CC 2280961-002 GW B-16-42 Depth 03/18/2022 03/18/2022 CC 2280961-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/30/2022:203544 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to 1,1-Dichloroethylene: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 03/30/2022:204803 All analysis quality controls are within established criteria, except: The following note applies to Bromomethane (Methyl Bromide), Trichlorofluoromethane F-11, Hexachlorobutadiene, Vinyl Acetate: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. The following note applies to Bromomethane (Methyl Bromide), Trichlorofluoromethane F-11: 380 CCV met CCC and SPCC criteria, Results were reported. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 13, 2022 Lab ID : CC 2280961 Water Systems Consulting, Inc. Customer : 8-1286 Discussion of Analytical Results: - Case Narrative - 04/13/22 - Due to the sample matrix for sample ID, B-16- 42 Depth, the preservative did not bring the pH to 2 pH units as required by the method. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 04.7 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 15 April 13, 2022 Lab ID : CC 2280961-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 18, 2022-13:00 Sampled By : Dan O Received On : March 18, 2022-13:33 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-16-56 Depth Project : SLO PCE B-16 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 95.8 78-125* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromofluoromethane‡ 96.8 85-124* % 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane-d4‡ 140 84-126* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene-d8‡ 91.1 77-129* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Acetone ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrolein ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrylonitrile ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Benzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromochloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromodichloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromoform ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromomethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butanol ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Butanone (MEK) ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 sec-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Disulfide ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Tetrachloride ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroethane ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroform ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Chlorotoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromochloromethane ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromomethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dichlorodifluoromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 13, 2022 Lab ID : CC 2280961-001 Description : B-16-56 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2,2-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl Benzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Hexachlorobutadiene ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Hexanone ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Isopropylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 p-Isopropyltoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methylene Chloride ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Propylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Styrene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Tetrachloroethylene 9 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichlorofluoromethane ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Acetate ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Chloride ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes m,p ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Page 4 of 15 April 13, 2022 Lab ID : CC 2280961-001 Description : B-16-56 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chloroethylvinylether ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 13, 2022 Lab ID : CC 2280961-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 18, 2022-12:15 Sampled By : Dan O Received On : March 18, 2022-13:33 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-16-48 Depth Project : SLO PCE B-16 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 94.9 78-125 % 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromofluoromethane‡ 99.5 85-124 % 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane-d4‡ 110 84-126 % 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene-d8‡ 84.8 77-129 % 5030B 03/30/22:203544 8260B 03/30/22:204803 Acetone ND 50 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrolein ND 50 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrylonitrile ND 50 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Benzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromobenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromochloromethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromodichloromethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromoform ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromomethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butanol ND 5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Butanone (MEK) ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Butylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 sec-Butylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Disulfide ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Tetrachloride ND 1 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chlorobenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroethane ND 1 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroform ND 1 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloromethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Chlorotoluene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromochloromethane ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromomethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 13, 2022 Lab ID : CC 2280961-002 Description : B-16-48 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl Benzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Hexachlorobutadiene ND 5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Hexanone ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Isopropylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methylene Chloride ND 5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Propylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Styrene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Tetrachloroethylene 6.8 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichloroethylene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichlorofluoromethane ND 1 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Acetate ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Chloride ND 0.5 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes m,p ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Page 7 of 15 April 13, 2022 Lab ID : CC 2280961-002 Description : B-16-48 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chloroethylvinylether ND 10 ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 13, 2022 Lab ID : CC 2280961-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 18, 2022-11:45 Sampled By : Dan O Received On : March 18, 2022-13:33 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-16-42 Depth Project : SLO PCE B-16 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 94.7 78-125* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromofluoromethane‡ 96.9 85-124* % 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane-d4‡ 92.6 84-126* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene-d8‡ 76.3 77-129* % 5030B 03/30/22:203544 8260B 03/30/22:204803 Acetone ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrolein ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Acrylonitrile ND 100* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Benzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromochloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromodichloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromoform ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Bromomethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butanol ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Butanone (MEK) ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 sec-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Butylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Disulfide ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Carbon Tetrachloride ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroethane ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloroform ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Chloromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chlorotoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Chlorotoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromochloromethane ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dibromomethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Dichlorodifluoromethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 13, 2022 Lab ID : CC 2280961-003 Description : B-16-42 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2,2-Dichloropropane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl Benzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Hexachlorobutadiene ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Hexanone ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Isopropylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 p-Isopropyltoluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Methylene Chloride ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 n-Propylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Styrene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Tetrachloroethylene 5 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Toluene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichloroethylene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Trichlorofluoromethane ND 2* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Acetate ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Vinyl Chloride ND 1* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes ND -- ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Xylenes m,p ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 Page 10 of 15 April 13, 2022 Lab ID : CC 2280961-003 Description : B-16-42 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 2-Chloroethylvinylether ND 20* ug/L 5030B 03/30/22:203544 8260B 03/30/22:204803 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 13, 2022 Lab ID : CC 2280961 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 LCS ug/L 25.00 90.2 % 52-137 MS ug/L 25.00 152 % 25-179 (CC 2280961-002) MSD ug/L 25.00 103 % 25-179 MSRPD ug/L 0.000 38.3% ≤26 435 1,1-Dichloropropene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/30/22:203544VRG Blank ug/L 25.00 100 % 84-126 LCS ug/L 25.00 120 % 84-126 MS ug/L 25.00 104 % 84-126 (CC 2280961-002) MSD ug/L 25.00 111 % 84-126 MSRPD ug/L 0.000 6.8% ≤20.0 1,2-Dichloropropane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/30/22:203544VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/30/22:203544VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/30/22:203544VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/30/22:203544VRG Blank ug/L 25.00 93.5 % 78-125 LCS ug/L 25.00 98.0 % 78-125 MS ug/L 25.00 93.3 % 0-200 (CC 2280961-002) MSD ug/L 25.00 97.3 % 0-200 MSRPD ug/L 0.000 4.2% ≤20.0 4-Chlorotoluene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/30/22:203544VRG Blank ug/L ND <10 Acetone 5030B 03/30/22:203544VRG Blank ug/L ND <50 Acrolein 5030B 03/30/22:203544VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/30/22:203544VRG Blank ug/L ND <50 Benzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 LCS ug/L 25.00 118 % 60-134 MS ug/L 25.00 126 % 47-169 (CC 2280961-002) MSD ug/L 25.00 131 % 47-169 MSRPD ug/L 0.000 4.1% ≤24 Bromobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Bromoform 5030B 03/30/22:203544VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/30/22:203544VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/30/22:203544VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 LCS ug/L 25.00 112 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 13, 2022 Lab ID : CC 2280961 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 141 % 31-212 (CC 2280961-002) MSD ug/L 25.00 141 % 31-212 MSRPD ug/L 0.000 0.05% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/30/22:203544VRG Blank ug/L ND <1 Chloroform 5030B 03/30/22:203544VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/30/22:203544VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/30/22:203544VRG Blank ug/L 25.00 84.4 % 85-124 LCS ug/L 25.00 100 % 85-124 MS ug/L 25.00 93.6 % 85-124 (CC 2280961-002) MSD ug/L 25.00 97.1 % 85-124 MSRPD ug/L 0.000 3.7% ≤20.0 Dibromomethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/30/22:203544VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/30/22:203544VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Freon-11 5030B 03/30/22:203544VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/30/22:203544VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/30/22:203544VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/30/22:203544VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Styrene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 TAME 5030B 03/30/22:203544VRG Blank ug/L ND <5 tert-Butanol 5030B 03/30/22:203544VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Toluene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 LCS ug/L 25.00 95.3 % 56-131 MS ug/L 25.00 112 % 44-164 (CC 2280961-002) MSD ug/L 25.00 114 % 44-164 MSRPD ug/L 0.000 1.3% ≤30 Toluene-d8 5030B 03/30/22:203544VRG Blank ug/L 25.00 82.5 % 77-129 LCS ug/L 25.00 97.1 % 77-129 MS ug/L 25.00 95.5 % 77-129 (CC 2280961-002) MSD ug/L 25.00 100 % 77-129 MSRPD ug/L 0.000 4.6% ≤20 trans-1,2-Dichloroethylene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 LCS ug/L 25.00 105 % 61-123 MS ug/L 25.00 125 % 41-167 (CC 2280961-002) MSD ug/L 25.00 130 % 41-167 MSRPD ug/L 0.000 3.5% ≤32 Vinyl Acetate 5030B 03/30/22:203544VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/30/22:203544VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/30/22:203544VRG Blank ug/L ND <2 Xylenes o 5030B 03/30/22:203544VRG Blank ug/L ND <2 Page 13 of 15 April 13, 2022 Lab ID : CC 2280961 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 95.8 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/30/22:204803VRG CCV ug/L 25.00 99.8 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 96.3 % 70-130 1,1,2-Trichloroethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 96.8 % 70-130 1,1-Dichloroethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.3 % 70-130 1,1-Dichloroethylene 8260B 03/30/22:204803VRG CCV ug/L 25.00 101 % 80-120 1,1-Dichloropropene 8260B 03/30/22:204803VRG CCV ug/L 25.00 102 % 70-130 1,2,3-Trichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 892 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 279 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.1 % 70-130 1,2-Dichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 102 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/30/22:204803VRG CCV ug/L 25.00 114 % 70-130 1,2-Dichloroethane-d4 8260B 03/30/22:204803VRG CCV ug/L 25.00 102 % 70-130 1,2-Dichloropropane 8260B 03/30/22:204803VRG CCV ug/L 25.00 107 % 80-120 1,3,5-Trimethylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 97.9 % 70-130 1,3-Dichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 93.3 % 70-130 1,3-Dichloropropane 8260B 03/30/22:204803VRG CCV ug/L 25.00 113 % 70-130 1,4-Dichlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 99.1 % 70-130 2,2-Dichloropropane 8260B 03/30/22:204803VRG CCV ug/L 25.00 110 % 70-130 2-Butanone (MEK) 8260B 03/30/22:204803VRG CCV ug/L 100.0 129 % 50-150 2-Chloroethylvinyl ether 8260B 03/30/22:204803VRG CCV ug/L 100.0 136 % 50-150 2-Chlorotoluene 8260B 03/30/22:204803VRG CCV ug/L 25.00 107 % 70-130 2-Hexanone 8260B 03/30/22:204803VRG CCV ug/L 100.0 159 % 50-150 360 4-Bromofluorobenzene (BFB) 8260B 03/30/22:204803VRG CCV ug/L 25.00 97.2 % 70-130 4-Chlorotoluene 8260B 03/30/22:204803VRG CCV ug/L 25.00 97.5 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/30/22:204803VRG CCV ug/L 100.0 139 % 50-150 Acetone 8260B 03/30/22:204803VRG CCV ug/L 100.0 95.1 % 50-150 Acrolein 8260B 03/30/22:204803VRG CCV ug/L 100.0 179 % 50-150 360 Acrylonitrile 8260B 03/30/22:204803VRG CCV ug/L 100.0 256 % 50-150 360 Benzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 111 % 70-130 Bromobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 100 % 70-130 Bromochloromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 90.7 % 70-130 Bromodichloromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.7 % 70-130 Bromoform 8260B 03/30/22:204803VRG CCV ug/L 25.00 79.2 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/30/22:204803VRG CCV ug/L 25.00 66.5 % 70-130 380 Carbon Disulfide 8260B 03/30/22:204803VRG CCV ug/L 100.0 71.7 % 50-150 Carbon Tetrachloride 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.7 % 70-130 Chlorobenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 97.4 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/30/22:204803VRG CCV ug/L 25.00 84.4 % 70-130 Chloroform 8260B 03/30/22:204803VRG CCV ug/L 25.00 88.9 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/30/22:204803VRG CCV ug/L 25.00 98.5 % 70-130 cis-1,2-Dichloroethylene 8260B 03/30/22:204803VRG CCV ug/L 25.00 94.9 % 70-130 cis-1,3-Dichloropropene 8260B 03/30/22:204803VRG CCV ug/L 25.00 109 % 70-130 Dibromochloromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 94.2 % 70-130 Dibromofluromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 93.8 % 70-130 Dibromomethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 107 % 70-130 Dichlorodifluoromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 96.8 % 70-130 Dichloromethane 8260B 03/30/22:204803VRG CCV ug/L 25.00 94.1 % 70-130 Ethyl tert-Butyl Ether 8260B 03/30/22:204803VRG CCV ug/L 25.00 116 % 50-150 Ethylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 105 % 80-120 Hexachlorobutadiene 8260B 03/30/22:204803VRG CCV ug/L 25.00 197 % 70-130 360 Isopropyl Ether 8260B 03/30/22:204803VRG CCV ug/L 25.00 122 % 50-150 Isopropylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 95.4 % 70-130 Page 14 of 15 April 13, 2022 Lab ID : CC 2280961 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/30/22:204803VRG CCV ug/L 25.00 122 % 70-130 n-Butylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 102 % 70-130 n-Propylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 95.7 % 70-130 p-Isopropyltoluene 8260B 03/30/22:204803VRG CCV ug/L 25.00 95.9 % 70-130 sec-Butylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 90.8 % 70-130 Styrene 8260B 03/30/22:204803VRG CCV ug/L 25.00 99.4 % 70-130 TAME 8260B 03/30/22:204803VRG CCV ug/L 25.00 121 % 50-150 tert-Butanol 8260B 03/30/22:204803VRG CCV ug/L 125.0 98.7 % 50-150 tert-Butylbenzene 8260B 03/30/22:204803VRG CCV ug/L 25.00 94.9 % 70-130 Tetrachloroethylene (PCE) 8260B 03/30/22:204803VRG CCV ug/L 25.00 94.9 % 70-130 Toluene 8260B 03/30/22:204803VRG CCV ug/L 25.00 99.8 % 80-120 Toluene-d8 8260B 03/30/22:204803VRG CCV ug/L 25.00 99.5 % 70-130 trans-1,2-Dichloroethylene 8260B 03/30/22:204803VRG CCV ug/L 25.00 105 % 70-130 trans-1,3-Dichloropropene 8260B 03/30/22:204803VRG CCV ug/L 25.00 116 % 70-130 Trichloroethylene (TCE) 8260B 03/30/22:204803VRG CCV ug/L 25.00 103 % 70-130 Trichlorofluoromethane F-11 8260B 03/30/22:204803VRG CCV ug/L 25.00 57.9 % 70-130 380 Vinyl Acetate 8260B 03/30/22:204803VRG CCV ug/L 100.0 151 % 50-150 360 Vinyl Chloride 8260B 03/30/22:204803VRG CCV ug/L 25.00 80.6 % 80-120 Xylene m,p 8260B 03/30/22:204803VRG CCV ug/L 50.00 96.6 % 70-130 Xylenes o 8260B 03/30/22:204803VRG CCV ug/L 25.00 95.4 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 380 : CCV met CCC and SPCC criteria, Results were reported. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 15 of 15 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists July 12, 2022 Water Systems Consulting, Inc. Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Subject: Subcontract Analysis for FGL Lab No. CC 2282475 Enclosed please find results for the following sample(s) which were received by FGL. Sub Organic-EPA 8260l Please note that this analysis was performed by Zalco Laboratories, Inc. Thank you for using FGL Environmental. Sincerely, Cindy Aguirre Digitally signed by Cindy Aguirre Title: Customer Service Rep Date: 2022-07-12 Enclosure Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists July 12, 2022 Water Systems Consulting, Inc. Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Subject: Subcontract Analysis for FGL Lab No. CC 2282432 Enclosed please find results for the following sample(s) which were received by FGL. Sub Organic-EPA 8260l Please note that this analysis was performed by Zalco Laboratories, Inc. Thank you for using FGL Environmental. Sincerely, Cindy Aguirre Digitally signed by Cindy Aguirre Title: Customer Service Rep Date: 2022-07-12 Enclosure April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280962 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-19-29 Depth 03/18/2022 03/18/2022 CC 2280962-001 GW B-19-43 Depth 03/18/2022 03/18/2022 CC 2280962-002 GW B-19-49 Depth 03/18/2022 03/18/2022 CC 2280962-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/31/2022:203560 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to 1,2,3-Trichlorobenzene: 210 The method blank was positive. However, samples reported were either ten times greater than the blank concentration or non detect and accepted. 8260B 03/31/2022:204863 All analysis quality controls are within established criteria, except: The following note applies to 1,1-Dichloroethane, 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrylonitrile, Hexachlorobutadiene, Isopropyl Ether,: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 13, 2022 Lab ID : CC 2280962 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 15 April 13, 2022 Lab ID : CC 2280962-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 18, 2022-11:10 Sampled By : Alex S Received On : March 18, 2022-13:33 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-19-29 Depth Project : SLO PCE B-19 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 92.5 78-125 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromofluoromethane‡ 104 85-124 % 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane-d4‡ 101 84-126 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene-d8‡ 84.4 77-129 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Acetone ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrolein ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrylonitrile ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Benzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromochloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromodichloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromoform ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromomethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butanol ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Butanone (MEK) ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 sec-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Disulfide ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Tetrachloride ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroethane ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroform ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chlorotoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Chlorotoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromochloromethane ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromomethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 13, 2022 Lab ID : CC 2280962-001 Description : B-19-29 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl Benzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Hexachlorobutadiene ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Hexanone ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Isopropylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methylene Chloride ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Propylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Styrene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Tetrachloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichlorofluoromethane ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Acetate ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Chloride ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes m,p ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Page 4 of 15 April 13, 2022 Lab ID : CC 2280962-001 Description : B-19-29 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chloroethylvinylether ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 13, 2022 Lab ID : CC 2280962-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 18, 2022-11:30 Sampled By : Alex S Received On : March 18, 2022-13:33 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-19-43 Depth Project : SLO PCE B-19 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 97.8 78-125* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromofluoromethane‡ 98.3 85-124* % 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane-d4‡ 114 84-126* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene-d8‡ 88.8 77-129* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Acetone ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrolein ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrylonitrile ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromochloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromodichloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromoform ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butanol ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Butanone (MEK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 sec-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Disulfide ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Tetrachloride ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroform ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromochloromethane ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dichlorodifluoromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 13, 2022 Lab ID : CC 2280962-002 Description : B-19-43 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Hexachlorobutadiene ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Hexanone ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Isopropylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 p-Isopropyltoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methylene Chloride ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Propylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Styrene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Tetrachloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichlorofluoromethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Acetate ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Chloride ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes m,p ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Page 7 of 15 April 13, 2022 Lab ID : CC 2280962-002 Description : B-19-43 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chloroethylvinylether ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 13, 2022 Lab ID : CC 2280962-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 18, 2022-12:32 Sampled By : Alex S Received On : March 18, 2022-13:33 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-19-49 Depth Project : SLO PCE B-19 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 100 78-125* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromofluoromethane‡ 99.3 85-124* % 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane-d4‡ 101 84-126* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene-d8‡ 97.1 77-129* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Acetone ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrolein ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrylonitrile ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromochloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromodichloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromoform ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butanol ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Butanone (MEK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 sec-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Disulfide ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Tetrachloride ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroform ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromochloromethane ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dichlorodifluoromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 13, 2022 Lab ID : CC 2280962-003 Description : B-19-49 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Hexachlorobutadiene ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Hexanone ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Isopropylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 p-Isopropyltoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methylene Chloride ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Propylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Styrene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Tetrachloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichlorofluoromethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Acetate ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Chloride ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes m,p ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Page 10 of 15 April 13, 2022 Lab ID : CC 2280962-003 Description : B-19-49 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chloroethylvinylether ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 13, 2022 Lab ID : CC 2280962 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 84.3 % 52-137 MS ug/L 25.00 86.6 % 25-179 (CC 2280962-001) MSD ug/L 25.00 83.2 % 25-179 MSRPD ug/L 0.000 4.0% ≤26 1,1-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L 15.5 10 210 1,2,4-Trichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/31/22:203560VRG Blank ug/L 25.00 123 % 84-126 LCS ug/L 25.00 110 % 84-126 MS ug/L 25.00 106 % 84-126 (CC 2280962-001) MSD ug/L 25.00 106 % 84-126 MSRPD ug/L 0.000 0.1% ≤20.0 1,2-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/31/22:203560VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/31/22:203560VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/31/22:203560VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/31/22:203560VRG Blank ug/L 25.00 103 % 78-125 LCS ug/L 25.00 95.5 % 78-125 MS ug/L 25.00 99.4 % 0-200 (CC 2280962-001) MSD ug/L 25.00 91.2 % 0-200 MSRPD ug/L 0.000 8.6% ≤20.0 4-Chlorotoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/31/22:203560VRG Blank ug/L ND <10 Acetone 5030B 03/31/22:203560VRG Blank ug/L ND <50 Acrolein 5030B 03/31/22:203560VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/31/22:203560VRG Blank ug/L ND <50 Benzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 128 % 60-134 MS ug/L 25.00 92.2 % 47-169 (CC 2280962-001) MSD ug/L 25.00 88.9 % 47-169 MSRPD ug/L 0.000 3.7% ≤24 Bromobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromoform 5030B 03/31/22:203560VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/31/22:203560VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 122 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 13, 2022 Lab ID : CC 2280962 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 103 % 31-212 (CC 2280962-001) MSD ug/L 25.00 101 % 31-212 MSRPD ug/L 0.000 2.2% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chloroform 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/31/22:203560VRG Blank ug/L 25.00 92.5 % 85-124 LCS ug/L 25.00 95.1 % 85-124 MS ug/L 25.00 99.5 % 85-124 (CC 2280962-001) MSD ug/L 25.00 98.4 % 85-124 MSRPD ug/L 0.000 1.1% ≤20.0 Dibromomethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/31/22:203560VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Freon-11 5030B 03/31/22:203560VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/31/22:203560VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/31/22:203560VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/31/22:203560VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Styrene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 TAME 5030B 03/31/22:203560VRG Blank ug/L ND <5 tert-Butanol 5030B 03/31/22:203560VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Toluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 86.4 % 56-131 MS ug/L 25.00 83.5 % 44-164 (CC 2280962-001) MSD ug/L 25.00 78.2 % 44-164 MSRPD ug/L 0.000 6.5% ≤30 Toluene-d8 5030B 03/31/22:203560VRG Blank ug/L 25.00 93.8 % 77-129 LCS ug/L 25.00 84.2 % 77-129 MS ug/L 25.00 94.2 % 77-129 (CC 2280962-001) MSD ug/L 25.00 95.2 % 77-129 MSRPD ug/L 0.000 1.1% ≤20 trans-1,2-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 113 % 61-123 MS ug/L 25.00 88.8 % 41-167 (CC 2280962-001) MSD ug/L 25.00 87.0 % 41-167 MSRPD ug/L 0.000 2.0% ≤32 Vinyl Acetate 5030B 03/31/22:203560VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/31/22:203560VRG Blank ug/L ND <2 Xylenes o 5030B 03/31/22:203560VRG Blank ug/L ND <2 Page 13 of 15 April 13, 2022 Lab ID : CC 2280962 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/31/22:204863VRG CCV ug/L 25.00 114 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 1,1,2-Trichloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 1,1-Dichloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 155 % 70-130 360 1,1-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 119 % 80-120 1,1-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 114 % 70-130 1,2,3-Trichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 554 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 260 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 1,2-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/31/22:204863VRG CCV ug/L 25.00 127 % 70-130 1,2-Dichloroethane-d4 8260B 03/31/22:204863VRG CCV ug/L 25.00 118 % 70-130 1,2-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.3 % 80-120 1,3,5-Trimethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 105 % 70-130 1,3-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.8 % 70-130 1,3-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 115 % 70-130 1,4-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 2,2-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 130 % 70-130 2-Butanone (MEK) 8260B 03/31/22:204863VRG CCV ug/L 100.0 91.6 % 50-150 2-Chloroethylvinyl ether 8260B 03/31/22:204863VRG CCV ug/L 100.0 113 % 50-150 2-Chlorotoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 118 % 70-130 2-Hexanone 8260B 03/31/22:204863VRG CCV ug/L 100.0 133 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/31/22:204863VRG CCV ug/L 25.00 93.9 % 70-130 4-Chlorotoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 106 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/31/22:204863VRG CCV ug/L 100.0 106 % 50-150 Acetone 8260B 03/31/22:204863VRG CCV ug/L 100.0 98.1 % 50-150 Acrolein 8260B 03/31/22:204863VRG CCV ug/L 100.0 139 % 50-150 Acrylonitrile 8260B 03/31/22:204863VRG CCV ug/L 100.0 164 % 50-150 360 Benzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 115 % 70-130 Bromobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 110 % 70-130 Bromochloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 97.1 % 70-130 Bromodichloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Bromoform 8260B 03/31/22:204863VRG CCV ug/L 25.00 82.6 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/31/22:204863VRG CCV ug/L 25.00 79.2 % 70-130 Carbon Disulfide 8260B 03/31/22:204863VRG CCV ug/L 100.0 67.4 % 50-150 Carbon Tetrachloride 8260B 03/31/22:204863VRG CCV ug/L 25.00 111 % 70-130 Chlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Chloroform 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/31/22:204863VRG CCV ug/L 25.00 89.4 % 70-130 cis-1,2-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 cis-1,3-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 117 % 70-130 Dibromochloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.7 % 70-130 Dibromofluromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 96.7 % 70-130 Dibromomethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Dichlorodifluoromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 84.9 % 70-130 Dichloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Ethyl tert-Butyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 147 % 50-150 Ethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 112 % 80-120 Hexachlorobutadiene 8260B 03/31/22:204863VRG CCV ug/L 25.00 187 % 70-130 360 Isopropyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 205 % 50-150 360 Isopropylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Page 14 of 15 April 13, 2022 Lab ID : CC 2280962 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 132 % 70-130 360 n-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 n-Propylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 101 % 70-130 p-Isopropyltoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 sec-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 97.7 % 70-130 Styrene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 TAME 8260B 03/31/22:204863VRG CCV ug/L 25.00 172 % 50-150 360 tert-Butanol 8260B 03/31/22:204863VRG CCV ug/L 125.0 125 % 50-150 tert-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Tetrachloroethylene (PCE) 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Toluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 80-120 Toluene-d8 8260B 03/31/22:204863VRG CCV ug/L 25.00 98.2 % 70-130 trans-1,2-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 116 % 70-130 trans-1,3-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 125 % 70-130 Trichloroethylene (TCE) 8260B 03/31/22:204863VRG CCV ug/L 25.00 117 % 70-130 Trichlorofluoromethane F-11 8260B 03/31/22:204863VRG CCV ug/L 25.00 70.1 % 70-130 Vinyl Acetate 8260B 03/31/22:204863VRG CCV ug/L 100.0 113 % 50-150 Vinyl Chloride 8260B 03/31/22:204863VRG CCV ug/L 25.00 90.5 % 80-120 Xylene m,p 8260B 03/31/22:204863VRG CCV ug/L 50.00 108 % 70-130 Xylenes o 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 210 : The method blank was positive. However, samples reported were either ten times greater than the blank concentration or non detect and accepted. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 15 of 15 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2281000 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-20-30 Depth 03/22/2022 03/22/2022 CC 2281000-001 GW B-20-52 Depth 03/22/2022 03/22/2022 CC 2281000-002 GW B-20-65 Depth 03/22/2022 03/22/2022 CC 2281000-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/31/2022:203560 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to 1,2,3-Trichlorobenzene: 210 The method blank was positive. However, samples reported were either ten times greater than the blank concentration or non detect and accepted. 8260B 03/31/2022:204863 All analysis quality controls are within established criteria, except: The following note applies to 1,1-Dichloroethane, 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrylonitrile, Hexachlorobutadiene, Isopropyl Ether,: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Discussion of Analytical Results: - Case Narrative - 04/13/22 - Due to the sample matrix for sample ID, B-20- 52 Depth, and B20- 65 Depth, the preservative did not bring the pH to 2 pH units as required by the method. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 13, 2022 Lab ID : CC 2281000 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 15 April 13, 2022 Lab ID : CC 2281000-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 22, 2022-13:54 Sampled By : Alex S Received On : March 22, 2022-16:34 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-20-30 Depth Project : SLO PCE B-20 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 95.9 78-125 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromofluoromethane‡ 98.3 85-124 % 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane-d4‡ 104 84-126 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene-d8‡ 131 77-129 % 5030B 03/31/22:203560 8260B 03/31/22:204863 Acetone ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrolein ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrylonitrile ND 50 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Benzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromochloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromodichloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromoform ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromomethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butanol ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Butanone (MEK) ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 sec-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Disulfide ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Tetrachloride ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroethane ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroform ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chlorotoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Chlorotoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromochloromethane ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromomethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 13, 2022 Lab ID : CC 2281000-001 Description : B-20-30 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl Benzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Hexachlorobutadiene ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Hexanone ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Isopropylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methylene Chloride ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Propylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Styrene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Tetrachloroethylene 3.1 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichloroethylene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichlorofluoromethane ND 1 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Acetate ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Chloride ND 0.5 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes m,p ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Page 4 of 15 April 13, 2022 Lab ID : CC 2281000-001 Description : B-20-30 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chloroethylvinylether ND 10 ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 13, 2022 Lab ID : CC 2281000-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 22, 2022-14:57 Sampled By : Alex S Received On : March 22, 2022-16:34 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-20-52 Depth Project : SLO PCE B-20 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 90.1 78-125* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromofluoromethane‡ 100 85-124* % 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane-d4‡ 98.5 84-126* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene-d8‡ 86.4 77-129* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Acetone ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrolein ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrylonitrile ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromochloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromodichloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromoform ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butanol ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Butanone (MEK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 sec-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Disulfide ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Tetrachloride ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroform ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromochloromethane ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dichlorodifluoromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 13, 2022 Lab ID : CC 2281000-002 Description : B-20-52 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Hexachlorobutadiene ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Hexanone ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Isopropylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 p-Isopropyltoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methylene Chloride ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Propylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Styrene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Tetrachloroethylene 3 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichlorofluoromethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Acetate ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Chloride ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes m,p ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Page 7 of 15 April 13, 2022 Lab ID : CC 2281000-002 Description : B-20-52 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chloroethylvinylether ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 13, 2022 Lab ID : CC 2281000-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 22, 2022-15:34 Sampled By : Alex S Received On : March 22, 2022-16:34 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-20-65 Depth Project : SLO PCE B-20 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 87.6 78-125* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromofluoromethane‡ 99.3 85-124* % 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane-d4‡ 103 84-126* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene-d8‡ 79.4 77-129* % 5030B 03/31/22:203560 8260B 03/31/22:204863 Acetone ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrolein ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Acrylonitrile ND 100* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromochloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromodichloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromoform ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Bromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butanol ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Butanone (MEK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 sec-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Butylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Disulfide ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Carbon Tetrachloride ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloroform ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Chloromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Chlorotoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromochloromethane ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dibromomethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Dichlorodifluoromethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 13, 2022 Lab ID : CC 2281000-003 Description : B-20-65 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2,2-Dichloropropane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl Benzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Hexachlorobutadiene ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Hexanone ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Isopropylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 p-Isopropyltoluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Methylene Chloride ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 n-Propylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Styrene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Tetrachloroethylene 5 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Toluene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichloroethylene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Trichlorofluoromethane ND 2* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Acetate ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Vinyl Chloride ND 1* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes ND -- ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Xylenes m,p ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 Page 10 of 15 April 13, 2022 Lab ID : CC 2281000-003 Description : B-20-65 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 2-Chloroethylvinylether ND 20* ug/L 5030B 03/31/22:203560 8260B 03/31/22:204863 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 13, 2022 Lab ID : CC 2281000 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 84.3 % 52-137 MS ug/L 25.00 86.6 % 25-179 (CC 2280962-001) MSD ug/L 25.00 83.2 % 25-179 MSRPD ug/L 0.000 4.0% ≤26 1,1-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L 15.5 10 210 1,2,4-Trichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/31/22:203560VRG Blank ug/L 25.00 123 % 84-126 LCS ug/L 25.00 110 % 84-126 MS ug/L 25.00 106 % 84-126 (CC 2280962-001) MSD ug/L 25.00 106 % 84-126 MSRPD ug/L 0.000 0.1% ≤20.0 1,2-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/31/22:203560VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/31/22:203560VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/31/22:203560VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/31/22:203560VRG Blank ug/L 25.00 103 % 78-125 LCS ug/L 25.00 95.5 % 78-125 MS ug/L 25.00 99.4 % 0-200 (CC 2280962-001) MSD ug/L 25.00 91.2 % 0-200 MSRPD ug/L 0.000 8.6% ≤20.0 4-Chlorotoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/31/22:203560VRG Blank ug/L ND <10 Acetone 5030B 03/31/22:203560VRG Blank ug/L ND <50 Acrolein 5030B 03/31/22:203560VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/31/22:203560VRG Blank ug/L ND <50 Benzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 128 % 60-134 MS ug/L 25.00 92.2 % 47-169 (CC 2280962-001) MSD ug/L 25.00 88.9 % 47-169 MSRPD ug/L 0.000 3.7% ≤24 Bromobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Bromoform 5030B 03/31/22:203560VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/31/22:203560VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 122 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 13, 2022 Lab ID : CC 2281000 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 103 % 31-212 (CC 2280962-001) MSD ug/L 25.00 101 % 31-212 MSRPD ug/L 0.000 2.2% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chloroform 5030B 03/31/22:203560VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/31/22:203560VRG Blank ug/L 25.00 92.5 % 85-124 LCS ug/L 25.00 95.1 % 85-124 MS ug/L 25.00 99.5 % 85-124 (CC 2280962-001) MSD ug/L 25.00 98.4 % 85-124 MSRPD ug/L 0.000 1.1% ≤20.0 Dibromomethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/31/22:203560VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/31/22:203560VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Freon-11 5030B 03/31/22:203560VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/31/22:203560VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/31/22:203560VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/31/22:203560VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Styrene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 TAME 5030B 03/31/22:203560VRG Blank ug/L ND <5 tert-Butanol 5030B 03/31/22:203560VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Toluene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 86.4 % 56-131 MS ug/L 25.00 83.5 % 44-164 (CC 2280962-001) MSD ug/L 25.00 78.2 % 44-164 MSRPD ug/L 0.000 6.5% ≤30 Toluene-d8 5030B 03/31/22:203560VRG Blank ug/L 25.00 93.8 % 77-129 LCS ug/L 25.00 84.2 % 77-129 MS ug/L 25.00 94.2 % 77-129 (CC 2280962-001) MSD ug/L 25.00 95.2 % 77-129 MSRPD ug/L 0.000 1.1% ≤20 trans-1,2-Dichloroethylene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 LCS ug/L 25.00 113 % 61-123 MS ug/L 25.00 88.8 % 41-167 (CC 2280962-001) MSD ug/L 25.00 87.0 % 41-167 MSRPD ug/L 0.000 2.0% ≤32 Vinyl Acetate 5030B 03/31/22:203560VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/31/22:203560VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/31/22:203560VRG Blank ug/L ND <2 Xylenes o 5030B 03/31/22:203560VRG Blank ug/L ND <2 Page 13 of 15 April 13, 2022 Lab ID : CC 2281000 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/31/22:204863VRG CCV ug/L 25.00 114 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 1,1,2-Trichloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 1,1-Dichloroethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 155 % 70-130 360 1,1-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 119 % 80-120 1,1-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 114 % 70-130 1,2,3-Trichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 554 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 260 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 1,2-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/31/22:204863VRG CCV ug/L 25.00 127 % 70-130 1,2-Dichloroethane-d4 8260B 03/31/22:204863VRG CCV ug/L 25.00 118 % 70-130 1,2-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.3 % 80-120 1,3,5-Trimethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 105 % 70-130 1,3-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.8 % 70-130 1,3-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 115 % 70-130 1,4-Dichlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 2,2-Dichloropropane 8260B 03/31/22:204863VRG CCV ug/L 25.00 130 % 70-130 2-Butanone (MEK) 8260B 03/31/22:204863VRG CCV ug/L 100.0 91.6 % 50-150 2-Chloroethylvinyl ether 8260B 03/31/22:204863VRG CCV ug/L 100.0 113 % 50-150 2-Chlorotoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 118 % 70-130 2-Hexanone 8260B 03/31/22:204863VRG CCV ug/L 100.0 133 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/31/22:204863VRG CCV ug/L 25.00 93.9 % 70-130 4-Chlorotoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 106 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/31/22:204863VRG CCV ug/L 100.0 106 % 50-150 Acetone 8260B 03/31/22:204863VRG CCV ug/L 100.0 98.1 % 50-150 Acrolein 8260B 03/31/22:204863VRG CCV ug/L 100.0 139 % 50-150 Acrylonitrile 8260B 03/31/22:204863VRG CCV ug/L 100.0 164 % 50-150 360 Benzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 115 % 70-130 Bromobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 110 % 70-130 Bromochloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 97.1 % 70-130 Bromodichloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Bromoform 8260B 03/31/22:204863VRG CCV ug/L 25.00 82.6 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/31/22:204863VRG CCV ug/L 25.00 79.2 % 70-130 Carbon Disulfide 8260B 03/31/22:204863VRG CCV ug/L 100.0 67.4 % 50-150 Carbon Tetrachloride 8260B 03/31/22:204863VRG CCV ug/L 25.00 111 % 70-130 Chlorobenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Chloroform 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/31/22:204863VRG CCV ug/L 25.00 89.4 % 70-130 cis-1,2-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 cis-1,3-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 117 % 70-130 Dibromochloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 99.7 % 70-130 Dibromofluromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 96.7 % 70-130 Dibromomethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Dichlorodifluoromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 84.9 % 70-130 Dichloromethane 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Ethyl tert-Butyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 147 % 50-150 Ethylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 112 % 80-120 Hexachlorobutadiene 8260B 03/31/22:204863VRG CCV ug/L 25.00 187 % 70-130 360 Isopropyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 205 % 50-150 360 Isopropylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Page 14 of 15 April 13, 2022 Lab ID : CC 2281000 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/31/22:204863VRG CCV ug/L 25.00 132 % 70-130 360 n-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 108 % 70-130 n-Propylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 101 % 70-130 p-Isopropyltoluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 103 % 70-130 sec-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 97.7 % 70-130 Styrene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 70-130 TAME 8260B 03/31/22:204863VRG CCV ug/L 25.00 172 % 50-150 360 tert-Butanol 8260B 03/31/22:204863VRG CCV ug/L 125.0 125 % 50-150 tert-Butylbenzene 8260B 03/31/22:204863VRG CCV ug/L 25.00 102 % 70-130 Tetrachloroethylene (PCE) 8260B 03/31/22:204863VRG CCV ug/L 25.00 109 % 70-130 Toluene 8260B 03/31/22:204863VRG CCV ug/L 25.00 107 % 80-120 Toluene-d8 8260B 03/31/22:204863VRG CCV ug/L 25.00 98.2 % 70-130 trans-1,2-Dichloroethylene 8260B 03/31/22:204863VRG CCV ug/L 25.00 116 % 70-130 trans-1,3-Dichloropropene 8260B 03/31/22:204863VRG CCV ug/L 25.00 125 % 70-130 Trichloroethylene (TCE) 8260B 03/31/22:204863VRG CCV ug/L 25.00 117 % 70-130 Trichlorofluoromethane F-11 8260B 03/31/22:204863VRG CCV ug/L 25.00 70.1 % 70-130 Vinyl Acetate 8260B 03/31/22:204863VRG CCV ug/L 100.0 113 % 50-150 Vinyl Chloride 8260B 03/31/22:204863VRG CCV ug/L 25.00 90.5 % 80-120 Xylene m,p 8260B 03/31/22:204863VRG CCV ug/L 50.00 108 % 70-130 Xylenes o 8260B 03/31/22:204863VRG CCV ug/L 25.00 104 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 210 : The method blank was positive. However, samples reported were either ten times greater than the blank concentration or non detect and accepted. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 15 of 15 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2281014 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 18 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (12 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-21-32 Depth 03/23/2022 03/23/2022 CC 2281014-001 GW B-21-45 Depth 03/23/2022 03/23/2022 CC 2281014-002 GW B-21-50 Depth 03/23/2022 03/23/2022 CC 2281014-003 GW B-21-56 Depth 03/23/2022 03/23/2022 CC 2281014-004 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 04/04/2022:203682 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Toluene-d8: 320 LCS not within Acceptance Range (AR). Data was accepted based on the BS/BSD recovery. The following note applies to Toluene-d8: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. The following note applies to Benzene: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 04/04/2022:204958 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrolein, Acrylonitrile, Hexachlorobutadiene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 18 April 13, 2022 Lab ID : CC 2281014 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 18 April 13, 2022 Lab ID : CC 2281014-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 23, 2022-10:54 Sampled By : Alex S Received On : March 23, 2022-16:33 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-21-32 Depth Project : SLO PCE B-21 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 94.1 78-125 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 101 85-124 % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 98.4 84-126 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 88.9 77-129 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 18 April 13, 2022 Lab ID : CC 2281014-001 Description : B-21-32 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene 3.7 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 4 of 18 April 13, 2022 Lab ID : CC 2281014-001 Description : B-21-32 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 18 April 13, 2022 Lab ID : CC 2281014-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 23, 2022-12:04 Sampled By : Alex S Received On : March 23, 2022-16:33 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-21-45 Depth Project : SLO PCE B-21 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 96.7 78-125 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 103 85-124 % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 128 84-126 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 79.8 77-129 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 18 April 13, 2022 Lab ID : CC 2281014-002 Description : B-21-45 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene 5.2 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 7 of 18 April 13, 2022 Lab ID : CC 2281014-002 Description : B-21-45 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 18 April 13, 2022 Lab ID : CC 2281014-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 23, 2022-12:32 Sampled By : Alex S Received On : March 23, 2022-16:33 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-21-50 Depth Project : SLO PCE B-21 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 104 78-125 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 97.1 85-124 % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 95.7 84-126 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 85.1 77-129 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 18 April 13, 2022 Lab ID : CC 2281014-003 Description : B-21-50 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene 5.5 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 10 of 18 April 13, 2022 Lab ID : CC 2281014-003 Description : B-21-50 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 18 April 13, 2022 Lab ID : CC 2281014-004 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 23, 2022-13:05 Sampled By : Alex S Received On : March 23, 2022-16:33 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-21-56 Depth Project : SLO PCE B-21 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 94.9 78-125* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 98.5 85-124* % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 81.2 84-126* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 68.0 77-129* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 18 April 13, 2022 Lab ID : CC 2281014-004 Description : B-21-56 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene 4 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 13 of 18 April 13, 2022 Lab ID : CC 2281014-004 Description : B-21-56 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 14 of 18 This Page is to be Stamped April 13, 2022 Lab ID : CC 2281014 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 70.6 % 52-137 MS ug/L 25.00 86.2 % 25-179 (CC 2281024-001) MSD ug/L 25.00 74.9 % 25-179 MSRPD ug/L 0.000 14.1% ≤26 1,1-Dichloropropene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 04/04/22:203682VRG Blank ug/L 25.00 76.8 % 84-126 LCS ug/L 25.00 103 % 84-126 MS ug/L 25.00 90.1 % 84-126 (CC 2281024-001) MSD ug/L 25.00 107 % 84-126 MSRPD ug/L 0.000 17.4% ≤20.0 1,2-Dichloropropane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 04/04/22:203682VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 04/04/22:203682VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 2-Hexanone 5030B 04/04/22:203682VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 04/04/22:203682VRG Blank ug/L 25.00 92.2 % 78-125 LCS ug/L 25.00 95.1 % 78-125 MS ug/L 25.00 102 % 0-200 (CC 2281024-001) MSD ug/L 25.00 92.0 % 0-200 MSRPD ug/L 0.000 10.6% ≤20.0 4-Chlorotoluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 04/04/22:203682VRG Blank ug/L ND <10 Acetone 5030B 04/04/22:203682VRG Blank ug/L ND <50 Acrolein 5030B 04/04/22:203682VRG Blank ug/L ND <50 Acrylonitrile 5030B 04/04/22:203682VRG Blank ug/L ND <50 Benzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 106 % 60-134 MS ug/L 25.00 78.0 % 47-169 (CC 2281024-001) MSD ug/L 25.00 110 % 47-169 MSRPD ug/L 0.000 34.4% ≤24 435 Bromobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Bromoform 5030B 04/04/22:203682VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 04/04/22:203682VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 04/04/22:203682VRG Blank ug/L ND <1 Chlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 109 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 15 of 18 April 13, 2022 Lab ID : CC 2281014 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 105 % 31-212 (CC 2281024-001) MSD ug/L 25.00 113 % 31-212 MSRPD ug/L 0.000 7.8% ≤27 Chloroethane (Ethyl Chloride) 5030B 04/04/22:203682VRG Blank ug/L ND <1 Chloroform 5030B 04/04/22:203682VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <2 Dibromofluromethane 5030B 04/04/22:203682VRG Blank ug/L 25.00 96.8 % 85-124 LCS ug/L 25.00 101 % 85-124 MS ug/L 25.00 98.4 % 85-124 (CC 2281024-001) MSD ug/L 25.00 97.6 % 85-124 MSRPD ug/L 0.000 0.8% ≤20.0 Dibromomethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Dichloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 04/04/22:203682VRG Blank ug/L ND <2 Ethylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Freon-11 5030B 04/04/22:203682VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 04/04/22:203682VRG Blank ug/L ND <5 Isopropyl Ether 5030B 04/04/22:203682VRG Blank ug/L ND <5 Isopropylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 04/04/22:203682VRG Blank ug/L ND <2 n-Butylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Styrene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 TAME 5030B 04/04/22:203682VRG Blank ug/L ND <5 tert-Butanol 5030B 04/04/22:203682VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Toluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 70.4 % 56-131 MS ug/L 25.00 65.8 % 44-164 (CC 2281024-001) MSD ug/L 25.00 69.4 % 44-164 MSRPD ug/L 0.000 5.4% ≤30 Toluene-d8 5030B 04/04/22:203682VRG Blank ug/L 25.00 89.4 % 77-129 LCS ug/L 25.00 73.6 % 77-129 325 MS ug/L 25.00 72.3 % 77-129 435 (CC 2281024-001) MSD ug/L 25.00 69.7 % 77-129 435 MSRPD ug/L 0.000 3.7% ≤20 trans-1,2-Dichloroethylene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 99.0 % 61-123 MS ug/L 25.00 72.2 % 41-167 (CC 2281024-001) MSD ug/L 25.00 99.0 % 41-167 MSRPD ug/L 0.000 31.2% ≤32 Vinyl Acetate 5030B 04/04/22:203682VRG Blank ug/L ND <10 Vinyl Chloride 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 04/04/22:203682VRG Blank ug/L ND <2 Xylenes o 5030B 04/04/22:203682VRG Blank ug/L ND <2 Page 16 of 18 April 13, 2022 Lab ID : CC 2281014 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 92.0 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 04/04/22:204958VRG CCV ug/L 25.00 118 % 70-130 1,1,2,2-Tetrachloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 100 % 70-130 1,1,2-Trichloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 90.3 % 70-130 1,1-Dichloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 70-130 1,1-Dichloroethylene 8260B 04/04/22:204958VRG CCV ug/L 25.00 104 % 80-120 1,1-Dichloropropene 8260B 04/04/22:204958VRG CCV ug/L 25.00 93.2 % 70-130 1,2,3-Trichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 655 % 70-130 360 1,2,4-Trichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 256 % 70-130 360 1,2,4-Trimethylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 106 % 70-130 1,2-Dichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 04/04/22:204958VRG CCV ug/L 25.00 110 % 70-130 1,2-Dichloroethane-d4 8260B 04/04/22:204958VRG CCV ug/L 25.00 120 % 70-130 1,2-Dichloropropane 8260B 04/04/22:204958VRG CCV ug/L 25.00 120 % 80-120 1,3,5-Trimethylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 106 % 70-130 1,3-Dichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 98.7 % 70-130 1,3-Dichloropropane 8260B 04/04/22:204958VRG CCV ug/L 25.00 111 % 70-130 1,4-Dichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 109 % 70-130 2,2-Dichloropropane 8260B 04/04/22:204958VRG CCV ug/L 25.00 126 % 70-130 2-Butanone (MEK) 8260B 04/04/22:204958VRG CCV ug/L 100.0 149 % 50-150 2-Chloroethylvinyl ether 8260B 04/04/22:204958VRG CCV ug/L 100.0 137 % 50-150 2-Chlorotoluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 118 % 70-130 2-Hexanone 8260B 04/04/22:204958VRG CCV ug/L 100.0 145 % 50-150 4-Bromofluorobenzene (BFB) 8260B 04/04/22:204958VRG CCV ug/L 25.00 95.0 % 70-130 4-Chlorotoluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 04/04/22:204958VRG CCV ug/L 100.0 131 % 50-150 Acetone 8260B 04/04/22:204958VRG CCV ug/L 100.0 90.3 % 50-150 Acrolein 8260B 04/04/22:204958VRG CCV ug/L 100.0 206 % 50-150 360 Acrylonitrile 8260B 04/04/22:204958VRG CCV ug/L 100.0 291 % 50-150 360 Benzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 109 % 70-130 Bromobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 111 % 70-130 Bromochloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 91.8 % 70-130 Bromodichloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 95.2 % 70-130 Bromoform 8260B 04/04/22:204958VRG CCV ug/L 25.00 85.0 % 70-130 Bromomethane (Methyl Bromide) 8260B 04/04/22:204958VRG CCV ug/L 25.00 77.3 % 70-130 Carbon Disulfide 8260B 04/04/22:204958VRG CCV ug/L 100.0 80.1 % 50-150 Carbon Tetrachloride 8260B 04/04/22:204958VRG CCV ug/L 25.00 92.1 % 70-130 Chlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 89.9 % 70-130 Chloroethane (Ethyl Chloride) 8260B 04/04/22:204958VRG CCV ug/L 25.00 96.2 % 70-130 Chloroform 8260B 04/04/22:204958VRG CCV ug/L 25.00 94.2 % 80-120 Chloromethane(Methyl Chloride) 8260B 04/04/22:204958VRG CCV ug/L 25.00 95.4 % 70-130 cis-1,2-Dichloroethylene 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 70-130 cis-1,3-Dichloropropene 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 70-130 Dibromochloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 97.2 % 70-130 Dibromofluromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 94.7 % 70-130 Dibromomethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 126 % 70-130 Dichlorodifluoromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 124 % 70-130 Dichloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 97.3 % 70-130 Ethyl tert-Butyl Ether 8260B 04/04/22:204958VRG CCV ug/L 25.00 114 % 50-150 Ethylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 98.4 % 80-120 Hexachlorobutadiene 8260B 04/04/22:204958VRG CCV ug/L 25.00 170 % 70-130 360 Isopropyl Ether 8260B 04/04/22:204958VRG CCV ug/L 25.00 128 % 50-150 Isopropylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 Page 17 of 18 April 13, 2022 Lab ID : CC 2281014 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 04/04/22:204958VRG CCV ug/L 25.00 111 % 70-130 n-Butylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 106 % 70-130 n-Propylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 p-Isopropyltoluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 sec-Butylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 99.7 % 70-130 Styrene 8260B 04/04/22:204958VRG CCV ug/L 25.00 92.7 % 70-130 TAME 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 50-150 tert-Butanol 8260B 04/04/22:204958VRG CCV ug/L 125.0 100 % 50-150 tert-Butylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 103 % 70-130 Tetrachloroethylene (PCE) 8260B 04/04/22:204958VRG CCV ug/L 25.00 112 % 70-130 Toluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 91.5 % 80-120 Toluene-d8 8260B 04/04/22:204958VRG CCV ug/L 25.00 103 % 70-130 trans-1,2-Dichloroethylene 8260B 04/04/22:204958VRG CCV ug/L 25.00 104 % 70-130 trans-1,3-Dichloropropene 8260B 04/04/22:204958VRG CCV ug/L 25.00 107 % 70-130 Trichloroethylene (TCE) 8260B 04/04/22:204958VRG CCV ug/L 25.00 112 % 70-130 Trichlorofluoromethane F-11 8260B 04/04/22:204958VRG CCV ug/L 25.00 69.9 % 70-130 Vinyl Acetate 8260B 04/04/22:204958VRG CCV ug/L 100.0 144 % 50-150 Vinyl Chloride 8260B 04/04/22:204958VRG CCV ug/L 25.00 90.9 % 80-120 Xylene m,p 8260B 04/04/22:204958VRG CCV ug/L 50.00 90.8 % 70-130 Xylenes o 8260B 04/04/22:204958VRG CCV ug/L 25.00 90.8 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 325 : The LCS was out of acceptance limits. Results may be biased low. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 18 of 18 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2281024 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 21 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (15 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-22- 31 Depth 03/24/2022 03/24/2022 CC 2281024-001 GW B-22- 40 Depth 03/24/2022 03/24/2022 CC 2281024-002 GW B-22- 47 Depth 03/24/2022 03/24/2022 CC 2281024-003 GW B-22- 52 Depth 03/24/2022 03/24/2022 CC 2281024-004 GW B-22- 56 Depth 03/24/2022 03/24/2022 CC 2281024-005 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 04/04/2022:203682 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Toluene-d8: 320 LCS not within Acceptance Range (AR). Data was accepted based on the BS/BSD recovery. The following note applies to Toluene-d8: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. The following note applies to Benzene: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 04/04/2022:204958 All analysis quality controls are within established criteria, except: Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 21 April 13, 2022 Lab ID : CC 2281024 Water Systems Consulting, Inc. Customer : 8-1286 Organic QC 8260B The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrolein, Acrylonitrile, Hexachlorobutadiene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Discussion of Analytical Results: - Case Narrative - 04/13/22 - Due to the sample matrix for sample ID, B-22- 47 Depth, the preservative did not bring the pH to 2 pH units as required by the method. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 05.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 21 April 13, 2022 Lab ID : CC 2281024-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-12:03 Sampled By : Alex S Received On : March 24, 2022-14:23 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-22- 31 Depth Project : SLO PCE B-22 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 97.2 78-125 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 102 85-124 % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 89.0 84-126 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 65.4 77-129 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 21 April 13, 2022 Lab ID : CC 2281024-001 Description : B-22- 31 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene 0.8 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 4 of 21 April 13, 2022 Lab ID : CC 2281024-001 Description : B-22- 31 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 21 April 13, 2022 Lab ID : CC 2281024-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-12:22 Sampled By : Alex S Received On : March 24, 2022-14:23 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-22- 40 Depth Project : SLO PCE B-22 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 95.7 78-125 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 96.7 85-124 % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 120 84-126 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 158 77-129 % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 50 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 21 April 13, 2022 Lab ID : CC 2281024-002 Description : B-22- 40 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene 1.2 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 1 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 0.5 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 7 of 21 April 13, 2022 Lab ID : CC 2281024-002 Description : B-22- 40 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 10 ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 21 April 13, 2022 Lab ID : CC 2281024-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-12:45 Sampled By : Alex S Received On : March 24, 2022-14:23 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-22- 47 Depth Project : SLO PCE B-22 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 91.1 78-125* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 104 85-124* % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 114 84-126* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 94.5 77-129* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 21 April 13, 2022 Lab ID : CC 2281024-003 Description : B-22- 47 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene 1 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 10 of 21 April 13, 2022 Lab ID : CC 2281024-003 Description : B-22- 47 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 21 April 13, 2022 Lab ID : CC 2281024-004 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-13:14 Sampled By : Alex S Received On : March 24, 2022-14:23 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-22- 52 Depth Project : SLO PCE B-22 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 91.8 78-125* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 104 85-124* % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 94.9 84-126* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 86.5 77-129* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 21 April 13, 2022 Lab ID : CC 2281024-004 Description : B-22- 52 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene 1 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 13 of 21 April 13, 2022 Lab ID : CC 2281024-004 Description : B-22- 52 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 14 of 21 April 13, 2022 Lab ID : CC 2281024-005 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 24, 2022-13:41 Sampled By : Alex S Received On : March 24, 2022-14:23 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-22- 56 Depth Project : SLO PCE B-22 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 87.2 78-125* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromofluoromethane‡ 100 85-124* % 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane-d4‡ 102 84-126* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene-d8‡ 82.5 77-129* % 5030B 04/04/22:203682 8260B 04/04/22:204958 Acetone ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrolein ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Acrylonitrile ND 100* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Benzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromochloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromodichloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromoform ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Bromomethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butanol ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Butanone (MEK) ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 sec-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Butylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Disulfide ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Carbon Tetrachloride ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroethane ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloroform ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Chloromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chlorotoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Chlorotoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromochloromethane ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dibromomethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Dichlorodifluoromethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 15 of 21 April 13, 2022 Lab ID : CC 2281024-005 Description : B-22- 56 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2,2-Dichloropropane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl Benzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Hexachlorobutadiene ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Hexanone ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Isopropylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 p-Isopropyltoluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Methylene Chloride ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 n-Propylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Styrene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Tetrachloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Toluene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichloroethylene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Trichlorofluoromethane ND 2* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Acetate ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Vinyl Chloride ND 1* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes ND -- ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Xylenes m,p ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 Page 16 of 21 April 13, 2022 Lab ID : CC 2281024-005 Description : B-22- 56 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 2-Chloroethylvinylether ND 20* ug/L 5030B 04/04/22:203682 8260B 04/04/22:204958 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 17 of 21 This Page is to be Stamped April 13, 2022 Lab ID : CC 2281024 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 70.6 % 52-137 MS ug/L 25.00 86.2 % 25-179 (CC 2281024-001) MSD ug/L 25.00 74.9 % 25-179 MSRPD ug/L 0.000 14.1% ≤26 1,1-Dichloropropene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 04/04/22:203682VRG Blank ug/L 25.00 76.8 % 84-126 LCS ug/L 25.00 103 % 84-126 MS ug/L 25.00 90.1 % 84-126 (CC 2281024-001) MSD ug/L 25.00 107 % 84-126 MSRPD ug/L 0.000 17.4% ≤20.0 1,2-Dichloropropane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 04/04/22:203682VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 04/04/22:203682VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 2-Hexanone 5030B 04/04/22:203682VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 04/04/22:203682VRG Blank ug/L 25.00 92.2 % 78-125 LCS ug/L 25.00 95.1 % 78-125 MS ug/L 25.00 102 % 0-200 (CC 2281024-001) MSD ug/L 25.00 92.0 % 0-200 MSRPD ug/L 0.000 10.6% ≤20.0 4-Chlorotoluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 04/04/22:203682VRG Blank ug/L ND <10 Acetone 5030B 04/04/22:203682VRG Blank ug/L ND <50 Acrolein 5030B 04/04/22:203682VRG Blank ug/L ND <50 Acrylonitrile 5030B 04/04/22:203682VRG Blank ug/L ND <50 Benzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 106 % 60-134 MS ug/L 25.00 78.0 % 47-169 (CC 2281024-001) MSD ug/L 25.00 110 % 47-169 MSRPD ug/L 0.000 34.4% ≤24 435 Bromobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Bromoform 5030B 04/04/22:203682VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 04/04/22:203682VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 04/04/22:203682VRG Blank ug/L ND <1 Chlorobenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 109 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 18 of 21 April 13, 2022 Lab ID : CC 2281024 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 105 % 31-212 (CC 2281024-001) MSD ug/L 25.00 113 % 31-212 MSRPD ug/L 0.000 7.8% ≤27 Chloroethane (Ethyl Chloride) 5030B 04/04/22:203682VRG Blank ug/L ND <1 Chloroform 5030B 04/04/22:203682VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <2 Dibromofluromethane 5030B 04/04/22:203682VRG Blank ug/L 25.00 96.8 % 85-124 LCS ug/L 25.00 101 % 85-124 MS ug/L 25.00 98.4 % 85-124 (CC 2281024-001) MSD ug/L 25.00 97.6 % 85-124 MSRPD ug/L 0.000 0.8% ≤20.0 Dibromomethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Dichloromethane 5030B 04/04/22:203682VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 04/04/22:203682VRG Blank ug/L ND <2 Ethylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Freon-11 5030B 04/04/22:203682VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 04/04/22:203682VRG Blank ug/L ND <5 Isopropyl Ether 5030B 04/04/22:203682VRG Blank ug/L ND <5 Isopropylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 04/04/22:203682VRG Blank ug/L ND <2 n-Butylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Styrene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 TAME 5030B 04/04/22:203682VRG Blank ug/L ND <5 tert-Butanol 5030B 04/04/22:203682VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Toluene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 70.4 % 56-131 MS ug/L 25.00 65.8 % 44-164 (CC 2281024-001) MSD ug/L 25.00 69.4 % 44-164 MSRPD ug/L 0.000 5.4% ≤30 Toluene-d8 5030B 04/04/22:203682VRG Blank ug/L 25.00 89.4 % 77-129 LCS ug/L 25.00 73.6 % 77-129 325 MS ug/L 25.00 72.3 % 77-129 435 (CC 2281024-001) MSD ug/L 25.00 69.7 % 77-129 435 MSRPD ug/L 0.000 3.7% ≤20 trans-1,2-Dichloroethylene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 LCS ug/L 25.00 99.0 % 61-123 MS ug/L 25.00 72.2 % 41-167 (CC 2281024-001) MSD ug/L 25.00 99.0 % 41-167 MSRPD ug/L 0.000 31.2% ≤32 Vinyl Acetate 5030B 04/04/22:203682VRG Blank ug/L ND <10 Vinyl Chloride 5030B 04/04/22:203682VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 04/04/22:203682VRG Blank ug/L ND <2 Xylenes o 5030B 04/04/22:203682VRG Blank ug/L ND <2 Page 19 of 21 April 13, 2022 Lab ID : CC 2281024 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 92.0 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 04/04/22:204958VRG CCV ug/L 25.00 118 % 70-130 1,1,2,2-Tetrachloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 100 % 70-130 1,1,2-Trichloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 90.3 % 70-130 1,1-Dichloroethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 70-130 1,1-Dichloroethylene 8260B 04/04/22:204958VRG CCV ug/L 25.00 104 % 80-120 1,1-Dichloropropene 8260B 04/04/22:204958VRG CCV ug/L 25.00 93.2 % 70-130 1,2,3-Trichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 655 % 70-130 360 1,2,4-Trichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 256 % 70-130 360 1,2,4-Trimethylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 106 % 70-130 1,2-Dichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 04/04/22:204958VRG CCV ug/L 25.00 110 % 70-130 1,2-Dichloroethane-d4 8260B 04/04/22:204958VRG CCV ug/L 25.00 120 % 70-130 1,2-Dichloropropane 8260B 04/04/22:204958VRG CCV ug/L 25.00 120 % 80-120 1,3,5-Trimethylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 106 % 70-130 1,3-Dichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 98.7 % 70-130 1,3-Dichloropropane 8260B 04/04/22:204958VRG CCV ug/L 25.00 111 % 70-130 1,4-Dichlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 109 % 70-130 2,2-Dichloropropane 8260B 04/04/22:204958VRG CCV ug/L 25.00 126 % 70-130 2-Butanone (MEK) 8260B 04/04/22:204958VRG CCV ug/L 100.0 149 % 50-150 2-Chloroethylvinyl ether 8260B 04/04/22:204958VRG CCV ug/L 100.0 137 % 50-150 2-Chlorotoluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 118 % 70-130 2-Hexanone 8260B 04/04/22:204958VRG CCV ug/L 100.0 145 % 50-150 4-Bromofluorobenzene (BFB) 8260B 04/04/22:204958VRG CCV ug/L 25.00 95.0 % 70-130 4-Chlorotoluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 04/04/22:204958VRG CCV ug/L 100.0 131 % 50-150 Acetone 8260B 04/04/22:204958VRG CCV ug/L 100.0 90.3 % 50-150 Acrolein 8260B 04/04/22:204958VRG CCV ug/L 100.0 206 % 50-150 360 Acrylonitrile 8260B 04/04/22:204958VRG CCV ug/L 100.0 291 % 50-150 360 Benzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 109 % 70-130 Bromobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 111 % 70-130 Bromochloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 91.8 % 70-130 Bromodichloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 95.2 % 70-130 Bromoform 8260B 04/04/22:204958VRG CCV ug/L 25.00 85.0 % 70-130 Bromomethane (Methyl Bromide) 8260B 04/04/22:204958VRG CCV ug/L 25.00 77.3 % 70-130 Carbon Disulfide 8260B 04/04/22:204958VRG CCV ug/L 100.0 80.1 % 50-150 Carbon Tetrachloride 8260B 04/04/22:204958VRG CCV ug/L 25.00 92.1 % 70-130 Chlorobenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 89.9 % 70-130 Chloroethane (Ethyl Chloride) 8260B 04/04/22:204958VRG CCV ug/L 25.00 96.2 % 70-130 Chloroform 8260B 04/04/22:204958VRG CCV ug/L 25.00 94.2 % 80-120 Chloromethane(Methyl Chloride) 8260B 04/04/22:204958VRG CCV ug/L 25.00 95.4 % 70-130 cis-1,2-Dichloroethylene 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 70-130 cis-1,3-Dichloropropene 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 70-130 Dibromochloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 97.2 % 70-130 Dibromofluromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 94.7 % 70-130 Dibromomethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 126 % 70-130 Dichlorodifluoromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 124 % 70-130 Dichloromethane 8260B 04/04/22:204958VRG CCV ug/L 25.00 97.3 % 70-130 Ethyl tert-Butyl Ether 8260B 04/04/22:204958VRG CCV ug/L 25.00 114 % 50-150 Ethylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 98.4 % 80-120 Hexachlorobutadiene 8260B 04/04/22:204958VRG CCV ug/L 25.00 170 % 70-130 360 Isopropyl Ether 8260B 04/04/22:204958VRG CCV ug/L 25.00 128 % 50-150 Isopropylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 Page 20 of 21 April 13, 2022 Lab ID : CC 2281024 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 04/04/22:204958VRG CCV ug/L 25.00 111 % 70-130 n-Butylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 106 % 70-130 n-Propylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 p-Isopropyltoluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 102 % 70-130 sec-Butylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 99.7 % 70-130 Styrene 8260B 04/04/22:204958VRG CCV ug/L 25.00 92.7 % 70-130 TAME 8260B 04/04/22:204958VRG CCV ug/L 25.00 101 % 50-150 tert-Butanol 8260B 04/04/22:204958VRG CCV ug/L 125.0 100 % 50-150 tert-Butylbenzene 8260B 04/04/22:204958VRG CCV ug/L 25.00 103 % 70-130 Tetrachloroethylene (PCE) 8260B 04/04/22:204958VRG CCV ug/L 25.00 112 % 70-130 Toluene 8260B 04/04/22:204958VRG CCV ug/L 25.00 91.5 % 80-120 Toluene-d8 8260B 04/04/22:204958VRG CCV ug/L 25.00 103 % 70-130 trans-1,2-Dichloroethylene 8260B 04/04/22:204958VRG CCV ug/L 25.00 104 % 70-130 trans-1,3-Dichloropropene 8260B 04/04/22:204958VRG CCV ug/L 25.00 107 % 70-130 Trichloroethylene (TCE) 8260B 04/04/22:204958VRG CCV ug/L 25.00 112 % 70-130 Trichlorofluoromethane F-11 8260B 04/04/22:204958VRG CCV ug/L 25.00 69.9 % 70-130 Vinyl Acetate 8260B 04/04/22:204958VRG CCV ug/L 100.0 144 % 50-150 Vinyl Chloride 8260B 04/04/22:204958VRG CCV ug/L 25.00 90.9 % 80-120 Xylene m,p 8260B 04/04/22:204958VRG CCV ug/L 50.00 90.8 % 70-130 Xylenes o 8260B 04/04/22:204958VRG CCV ug/L 25.00 90.8 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 325 : The LCS was out of acceptance limits. Results may be biased low. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 21 of 21 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2281044 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 9 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (3 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-23-32 Depth 03/25/2022 03/25/2022 CC 2281044-001 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 04/05/2022:203701 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Benzene: 310 LCS above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. The following note applies to Toluene-d8: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 04/05/2022:204992 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, 2-Hexanone, Acrylonitrile, Dibromomethane, Hexachlorobutadiene, 2-Butano: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 9 April 13, 2022 Lab ID : CC 2281044 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 9 April 13, 2022 Lab ID : CC 2281044-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 25, 2022-13:05 Sampled By : Alex S Received On : March 25, 2022-16:30 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-23-32 Depth Project : SLO PCE B-23 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 96.2 78-125* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromofluoromethane‡ 93.9 85-124* % 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane-d4‡ 97.0 84-126* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene-d8‡ 145 77-129* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Acetone ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrolein ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrylonitrile ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromochloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromodichloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromoform ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butanol ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Butanone (MEK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 sec-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Disulfide ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Tetrachloride ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroform ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromochloromethane ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dichlorodifluoromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 9 April 13, 2022 Lab ID : CC 2281044-001 Description : B-23-32 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Hexachlorobutadiene ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Hexanone ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Isopropylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 p-Isopropyltoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methylene Chloride ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Propylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Styrene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Tetrachloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichlorofluoromethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Acetate ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Chloride ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes m,p ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Page 4 of 9 April 13, 2022 Lab ID : CC 2281044-001 Description : B-23-32 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chloroethylvinylether ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 9 This Page is to be Stamped April 13, 2022 Lab ID : CC 2281044 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 111 % 52-137 MS ug/L 25.00 82.3 % 25-179 (CC 2281040-002) MSD ug/L 25.00 87.3 % 25-179 MSRPD ug/L 0.000 5.9% ≤26 1,1-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 04/05/22:203701VRG Blank ug/L 25.00 94.8 % 84-126 LCS ug/L 25.00 109 % 84-126 MS ug/L 25.00 98.9 % 84-126 (CC 2281040-002) MSD ug/L 25.00 94.8 % 84-126 MSRPD ug/L 0.000 4.2% ≤20.0 1,2-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 04/05/22:203701VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 04/05/22:203701VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2-Hexanone 5030B 04/05/22:203701VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 04/05/22:203701VRG Blank ug/L 25.00 97.8 % 78-125 LCS ug/L 25.00 90.7 % 78-125 MS ug/L 25.00 99.4 % 0-200 (CC 2281040-002) MSD ug/L 25.00 101 % 0-200 MSRPD ug/L 0.000 2.1% ≤20.0 4-Chlorotoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 04/05/22:203701VRG Blank ug/L ND <10 Acetone 5030B 04/05/22:203701VRG Blank ug/L ND <50 Acrolein 5030B 04/05/22:203701VRG Blank ug/L ND <50 Acrylonitrile 5030B 04/05/22:203701VRG Blank ug/L ND <50 Benzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 147 % 60-134 330 MS ug/L 25.00 105 % 47-169 (CC 2281040-002) MSD ug/L 25.00 100 % 47-169 MSRPD ug/L 0.000 4.6% ≤24 Bromobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromoform 5030B 04/05/22:203701VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 04/05/22:203701VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 121 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 9 April 13, 2022 Lab ID : CC 2281044 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 102 % 31-212 (CC 2281040-002) MSD ug/L 25.00 102 % 31-212 MSRPD ug/L 0.000 0.1% ≤27 Chloroethane (Ethyl Chloride) 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chloroform 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <2 Dibromofluromethane 5030B 04/05/22:203701VRG Blank ug/L 25.00 90.7 % 85-124 LCS ug/L 25.00 99.2 % 85-124 MS ug/L 25.00 93.5 % 85-124 (CC 2281040-002) MSD ug/L 25.00 92.1 % 85-124 MSRPD ug/L 0.000 1.5% ≤20.0 Dibromomethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dichloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 04/05/22:203701VRG Blank ug/L ND <2 Ethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Freon-11 5030B 04/05/22:203701VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 04/05/22:203701VRG Blank ug/L ND <5 Isopropyl Ether 5030B 04/05/22:203701VRG Blank ug/L ND <5 Isopropylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 04/05/22:203701VRG Blank ug/L ND <2 n-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Styrene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 TAME 5030B 04/05/22:203701VRG Blank ug/L ND <5 tert-Butanol 5030B 04/05/22:203701VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Toluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 94.6 % 56-131 MS ug/L 25.00 127 % 44-164 (CC 2281040-002) MSD ug/L 25.00 124 % 44-164 MSRPD ug/L 0.000 2.4% ≤30 Toluene-d8 5030B 04/05/22:203701VRG Blank ug/L 25.00 142 % 77-129 LCS ug/L 25.00 94.3 % 77-129 MS ug/L 25.00 139 % 77-129 435 (CC 2281040-002) MSD ug/L 25.00 140 % 77-129 435 MSRPD ug/L 0.000 0.9% ≤20 trans-1,2-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 104 % 61-123 MS ug/L 25.00 98.3 % 41-167 (CC 2281040-002) MSD ug/L 25.00 92.0 % 41-167 MSRPD ug/L 0.000 6.6% ≤32 Vinyl Acetate 5030B 04/05/22:203701VRG Blank ug/L ND <10 Vinyl Chloride 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 04/05/22:203701VRG Blank ug/L ND <2 Xylenes o 5030B 04/05/22:203701VRG Blank ug/L ND <2 Page 7 of 9 April 13, 2022 Lab ID : CC 2281044 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 106 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.2 % 70-130 1,1,2,2-Tetrachloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 1,1,2-Trichloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 106 % 70-130 1,1-Dichloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.1 % 70-130 1,1-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 91.2 % 80-120 1,1-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 97.7 % 70-130 1,2,3-Trichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 665 % 70-130 360 1,2,4-Trichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 264 % 70-130 360 1,2,4-Trimethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.6 % 70-130 1,2-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 04/05/22:204992VRG CCV ug/L 25.00 123 % 70-130 1,2-Dichloroethane-d4 8260B 04/05/22:204992VRG CCV ug/L 25.00 125 % 70-130 1,2-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 113 % 80-120 1,3,5-Trimethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 95.8 % 70-130 1,3-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 94.7 % 70-130 1,3-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 120 % 70-130 1,4-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 2,2-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 114 % 70-130 2-Butanone (MEK) 8260B 04/05/22:204992VRG CCV ug/L 100.0 155 % 50-150 360 2-Chloroethylvinyl ether 8260B 04/05/22:204992VRG CCV ug/L 100.0 136 % 50-150 2-Chlorotoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 110 % 70-130 2-Hexanone 8260B 04/05/22:204992VRG CCV ug/L 100.0 154 % 50-150 360 4-Bromofluorobenzene (BFB) 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.4 % 70-130 4-Chlorotoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 99.8 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 04/05/22:204992VRG CCV ug/L 100.0 133 % 50-150 Acetone 8260B 04/05/22:204992VRG CCV ug/L 100.0 76.6 % 50-150 Acrolein 8260B 04/05/22:204992VRG CCV ug/L 100.0 129 % 50-150 Acrylonitrile 8260B 04/05/22:204992VRG CCV ug/L 100.0 171 % 50-150 360 Benzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 70-130 Bromobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Bromochloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.7 % 70-130 Bromodichloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Bromoform 8260B 04/05/22:204992VRG CCV ug/L 25.00 103 % 70-130 Bromomethane (Methyl Bromide) 8260B 04/05/22:204992VRG CCV ug/L 25.00 81.0 % 70-130 Carbon Disulfide 8260B 04/05/22:204992VRG CCV ug/L 100.0 62.3 % 50-150 Carbon Tetrachloride 8260B 04/05/22:204992VRG CCV ug/L 25.00 105 % 70-130 Chlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.6 % 70-130 Chloroethane (Ethyl Chloride) 8260B 04/05/22:204992VRG CCV ug/L 25.00 100 % 70-130 Chloroform 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.6 % 80-120 Chloromethane(Methyl Chloride) 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.8 % 70-130 cis-1,2-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.3 % 70-130 cis-1,3-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 110 % 70-130 Dibromochloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 111 % 70-130 Dibromofluromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.2 % 70-130 Dibromomethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 146 % 70-130 360 Dichlorodifluoromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 102 % 70-130 Dichloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 97.9 % 70-130 Ethyl tert-Butyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 50-150 Ethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 102 % 80-120 Hexachlorobutadiene 8260B 04/05/22:204992VRG CCV ug/L 25.00 174 % 70-130 360 Isopropyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 124 % 50-150 Isopropylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 88.7 % 70-130 Page 8 of 9 April 13, 2022 Lab ID : CC 2281044 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 70-130 n-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.1 % 70-130 n-Propylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 87.7 % 70-130 p-Isopropyltoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 90.9 % 70-130 sec-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 86.1 % 70-130 Styrene 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 TAME 8260B 04/05/22:204992VRG CCV ug/L 25.00 129 % 50-150 tert-Butanol 8260B 04/05/22:204992VRG CCV ug/L 125.0 109 % 50-150 tert-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 88.5 % 70-130 Tetrachloroethylene (PCE) 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.4 % 70-130 Toluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 95.4 % 80-120 Toluene-d8 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 trans-1,2-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.2 % 70-130 trans-1,3-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 117 % 70-130 Trichloroethylene (TCE) 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Trichlorofluoromethane F-11 8260B 04/05/22:204992VRG CCV ug/L 25.00 71.0 % 70-130 Vinyl Acetate 8260B 04/05/22:204992VRG CCV ug/L 100.0 113 % 50-150 Vinyl Chloride 8260B 04/05/22:204992VRG CCV ug/L 25.00 87.8 % 80-120 Xylene m,p 8260B 04/05/22:204992VRG CCV ug/L 50.00 98.2 % 70-130 Xylenes o 8260B 04/05/22:204992VRG CCV ug/L 25.00 101 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 330 : The LCS was out of acceptance limits. Results may be biased high. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 9 of 9 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2281113 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-24-36 Depth 03/31/2022 03/31/2022 CC 2281113-001 GW B-24-55 Depth 03/31/2022 03/31/2022 CC 2281113-002 GW B-24-63 Depth 03/31/2022 03/31/2022 CC 2281113-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 04/05/2022:203701 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Benzene: 310 LCS above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. The following note applies to Toluene-d8: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 04/05/2022:204992 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, 2-Hexanone, Acrylonitrile, Dibromomethane, Hexachlorobutadiene, 2-Butano: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 04/06/2022:204992 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, 2-Hexanone, Acrylonitrile, Dibromomethane, Hexachlorobutadiene, 2-Butano: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 13, 2022 Lab ID : CC 2281113 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 15 April 13, 2022 Lab ID : CC 2281113-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 31, 2022-11:55 Sampled By : Dan O Received On : March 31, 2022-14:25 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-24-36 Depth Project : SLO PCE B-24 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 97.1 78-125 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromofluoromethane‡ 93.8 85-124 % 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane-d4‡ 104 84-126 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene-d8‡ 149 77-129 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Acetone ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrolein ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrylonitrile ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Benzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromochloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromodichloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromoform ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromomethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butanol ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Butanone (MEK) ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 sec-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Disulfide ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Tetrachloride ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroethane ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroform ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chlorotoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Chlorotoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromochloromethane ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromomethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 13, 2022 Lab ID : CC 2281113-001 Description : B-24-36 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl Benzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Hexachlorobutadiene ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Hexanone ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Isopropylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methylene Chloride ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Propylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Styrene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Tetrachloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichlorofluoromethane ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Acetate ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Chloride ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes m,p ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Page 4 of 15 April 13, 2022 Lab ID : CC 2281113-001 Description : B-24-36 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chloroethylvinylether ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 13, 2022 Lab ID : CC 2281113-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 31, 2022-13:18 Sampled By : Dan O Received On : March 31, 2022-14:25 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-24-55 Depth Project : SLO PCE B-24 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 90.3 78-125* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromofluoromethane‡ 90.6 85-124* % 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane-d4‡ 91.9 84-126* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene-d8‡ 144 77-129* % 5030B 04/05/22:203701 8260B 04/05/22:204992 Acetone ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrolein ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrylonitrile ND 100* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromochloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromodichloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromoform ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butanol ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Butanone (MEK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 sec-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Disulfide ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Tetrachloride ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroform ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromochloromethane ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dichlorodifluoromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 13, 2022 Lab ID : CC 2281113-002 Description : B-24-55 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Hexachlorobutadiene ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Hexanone ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Isopropylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 p-Isopropyltoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methylene Chloride ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Propylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Styrene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Tetrachloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichlorofluoromethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Acetate ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Chloride ND 1* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes m,p ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Page 7 of 15 April 13, 2022 Lab ID : CC 2281113-002 Description : B-24-55 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chloroethylvinylether ND 20* ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 13, 2022 Lab ID : CC 2281113-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 31, 2022-13:56 Sampled By : Dan O Received On : March 31, 2022-14:25 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-24-63 Depth Project : SLO PCE B-24 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 95.8 78-125* % 5030B 04/05/22:203701 8260B 04/06/22:204992 Dibromofluoromethane‡ 94.3 85-124* % 5030B 04/05/22:203701 8260B 04/06/22:204992 1,2-Dichloroethane-d4‡ 101 84-126* % 5030B 04/05/22:203701 8260B 04/06/22:204992 Toluene-d8‡ 145 77-129* % 5030B 04/05/22:203701 8260B 04/06/22:204992 Acetone ND 100* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Acrolein ND 100* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Acrylonitrile ND 100* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Bromobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Bromochloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Bromodichloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Bromoform ND 4* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Bromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 tert-Butanol ND 10* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 2-Butanone (MEK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 n-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 sec-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 tert-Butylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Carbon Disulfide ND 20* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Carbon Tetrachloride ND 2* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Chlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Chloroethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Chloroform ND 2* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Chloromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 2-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 4-Chlorotoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Dibromochloromethane ND 4* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Dibromomethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Dichlorodifluoromethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,1-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,2-Dichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,1-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 13, 2022 Lab ID : CC 2281113-003 Description : B-24-63 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,3-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 2,2-Dichloropropane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,1-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Ethyl Benzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Hexachlorobutadiene ND 10* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 2-Hexanone ND 20* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Isopropylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 p-Isopropyltoluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Methylene Chloride ND 10* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 n-Propylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Styrene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Tetrachloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Toluene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Trichloroethylene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Trichlorofluoromethane ND 2* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Vinyl Acetate ND 20* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Vinyl Chloride ND 1* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Xylenes m,p ND 4* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 Page 10 of 15 April 13, 2022 Lab ID : CC 2281113-003 Description : B-24-63 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 2-Chloroethylvinylether ND 20* ug/L 5030B 04/05/22:203701 8260B 04/06/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 13, 2022 Lab ID : CC 2281113 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 111 % 52-137 MS ug/L 25.00 82.3 % 25-179 (CC 2281040-002) MSD ug/L 25.00 87.3 % 25-179 MSRPD ug/L 0.000 5.9% ≤26 1,1-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 04/05/22:203701VRG Blank ug/L 25.00 94.8 % 84-126 LCS ug/L 25.00 109 % 84-126 MS ug/L 25.00 98.9 % 84-126 (CC 2281040-002) MSD ug/L 25.00 94.8 % 84-126 MSRPD ug/L 0.000 4.2% ≤20.0 1,2-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 04/05/22:203701VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 04/05/22:203701VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2-Hexanone 5030B 04/05/22:203701VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 04/05/22:203701VRG Blank ug/L 25.00 97.8 % 78-125 LCS ug/L 25.00 90.7 % 78-125 MS ug/L 25.00 99.4 % 0-200 (CC 2281040-002) MSD ug/L 25.00 101 % 0-200 MSRPD ug/L 0.000 2.1% ≤20.0 4-Chlorotoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 04/05/22:203701VRG Blank ug/L ND <10 Acetone 5030B 04/05/22:203701VRG Blank ug/L ND <50 Acrolein 5030B 04/05/22:203701VRG Blank ug/L ND <50 Acrylonitrile 5030B 04/05/22:203701VRG Blank ug/L ND <50 Benzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 147 % 60-134 330 MS ug/L 25.00 105 % 47-169 (CC 2281040-002) MSD ug/L 25.00 100 % 47-169 MSRPD ug/L 0.000 4.6% ≤24 Bromobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromoform 5030B 04/05/22:203701VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 04/05/22:203701VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 121 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 13, 2022 Lab ID : CC 2281113 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 102 % 31-212 (CC 2281040-002) MSD ug/L 25.00 102 % 31-212 MSRPD ug/L 0.000 0.1% ≤27 Chloroethane (Ethyl Chloride) 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chloroform 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <2 Dibromofluromethane 5030B 04/05/22:203701VRG Blank ug/L 25.00 90.7 % 85-124 LCS ug/L 25.00 99.2 % 85-124 MS ug/L 25.00 93.5 % 85-124 (CC 2281040-002) MSD ug/L 25.00 92.1 % 85-124 MSRPD ug/L 0.000 1.5% ≤20.0 Dibromomethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dichloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 04/05/22:203701VRG Blank ug/L ND <2 Ethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Freon-11 5030B 04/05/22:203701VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 04/05/22:203701VRG Blank ug/L ND <5 Isopropyl Ether 5030B 04/05/22:203701VRG Blank ug/L ND <5 Isopropylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 04/05/22:203701VRG Blank ug/L ND <2 n-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Styrene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 TAME 5030B 04/05/22:203701VRG Blank ug/L ND <5 tert-Butanol 5030B 04/05/22:203701VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Toluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 94.6 % 56-131 MS ug/L 25.00 127 % 44-164 (CC 2281040-002) MSD ug/L 25.00 124 % 44-164 MSRPD ug/L 0.000 2.4% ≤30 Toluene-d8 5030B 04/05/22:203701VRG Blank ug/L 25.00 142 % 77-129 LCS ug/L 25.00 94.3 % 77-129 MS ug/L 25.00 139 % 77-129 435 (CC 2281040-002) MSD ug/L 25.00 140 % 77-129 435 MSRPD ug/L 0.000 0.9% ≤20 trans-1,2-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 104 % 61-123 MS ug/L 25.00 98.3 % 41-167 (CC 2281040-002) MSD ug/L 25.00 92.0 % 41-167 MSRPD ug/L 0.000 6.6% ≤32 Vinyl Acetate 5030B 04/05/22:203701VRG Blank ug/L ND <10 Vinyl Chloride 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 04/05/22:203701VRG Blank ug/L ND <2 Xylenes o 5030B 04/05/22:203701VRG Blank ug/L ND <2 Page 13 of 15 April 13, 2022 Lab ID : CC 2281113 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 04/06/22:204992VRG CCV ug/L 25.00 106 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 04/06/22:204992VRG CCV ug/L 25.00 96.2 % 70-130 1,1,2,2-Tetrachloroethane 8260B 04/06/22:204992VRG CCV ug/L 25.00 104 % 70-130 1,1,2-Trichloroethane 8260B 04/06/22:204992VRG CCV ug/L 25.00 106 % 70-130 1,1-Dichloroethane 8260B 04/06/22:204992VRG CCV ug/L 25.00 98.1 % 70-130 1,1-Dichloroethylene 8260B 04/06/22:204992VRG CCV ug/L 25.00 91.2 % 80-120 1,1-Dichloropropene 8260B 04/06/22:204992VRG CCV ug/L 25.00 97.7 % 70-130 1,2,3-Trichlorobenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 665 % 70-130 360 1,2,4-Trichlorobenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 264 % 70-130 360 1,2,4-Trimethylbenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 98.6 % 70-130 1,2-Dichlorobenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 04/06/22:204992VRG CCV ug/L 25.00 123 % 70-130 1,2-Dichloroethane-d4 8260B 04/06/22:204992VRG CCV ug/L 25.00 125 % 70-130 1,2-Dichloropropane 8260B 04/06/22:204992VRG CCV ug/L 25.00 113 % 80-120 1,3,5-Trimethylbenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 95.8 % 70-130 1,3-Dichlorobenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 94.7 % 70-130 1,3-Dichloropropane 8260B 04/06/22:204992VRG CCV ug/L 25.00 120 % 70-130 1,4-Dichlorobenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 107 % 70-130 2,2-Dichloropropane 8260B 04/06/22:204992VRG CCV ug/L 25.00 114 % 70-130 2-Butanone (MEK) 8260B 04/06/22:204992VRG CCV ug/L 100.0 155 % 50-150 360 2-Chloroethylvinyl ether 8260B 04/06/22:204992VRG CCV ug/L 100.0 136 % 50-150 2-Chlorotoluene 8260B 04/06/22:204992VRG CCV ug/L 25.00 110 % 70-130 2-Hexanone 8260B 04/06/22:204992VRG CCV ug/L 100.0 154 % 50-150 360 4-Bromofluorobenzene (BFB) 8260B 04/06/22:204992VRG CCV ug/L 25.00 93.4 % 70-130 4-Chlorotoluene 8260B 04/06/22:204992VRG CCV ug/L 25.00 99.8 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 04/06/22:204992VRG CCV ug/L 100.0 133 % 50-150 Acetone 8260B 04/06/22:204992VRG CCV ug/L 100.0 76.6 % 50-150 Acrolein 8260B 04/06/22:204992VRG CCV ug/L 100.0 129 % 50-150 Acrylonitrile 8260B 04/06/22:204992VRG CCV ug/L 100.0 171 % 50-150 360 Benzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 115 % 70-130 Bromobenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 107 % 70-130 Bromochloromethane 8260B 04/06/22:204992VRG CCV ug/L 25.00 93.7 % 70-130 Bromodichloromethane 8260B 04/06/22:204992VRG CCV ug/L 25.00 107 % 70-130 Bromoform 8260B 04/06/22:204992VRG CCV ug/L 25.00 103 % 70-130 Bromomethane (Methyl Bromide) 8260B 04/06/22:204992VRG CCV ug/L 25.00 81.0 % 70-130 Carbon Disulfide 8260B 04/06/22:204992VRG CCV ug/L 100.0 62.3 % 50-150 Carbon Tetrachloride 8260B 04/06/22:204992VRG CCV ug/L 25.00 105 % 70-130 Chlorobenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 96.6 % 70-130 Chloroethane (Ethyl Chloride) 8260B 04/06/22:204992VRG CCV ug/L 25.00 100 % 70-130 Chloroform 8260B 04/06/22:204992VRG CCV ug/L 25.00 93.6 % 80-120 Chloromethane(Methyl Chloride) 8260B 04/06/22:204992VRG CCV ug/L 25.00 93.8 % 70-130 cis-1,2-Dichloroethylene 8260B 04/06/22:204992VRG CCV ug/L 25.00 96.3 % 70-130 cis-1,3-Dichloropropene 8260B 04/06/22:204992VRG CCV ug/L 25.00 110 % 70-130 Dibromochloromethane 8260B 04/06/22:204992VRG CCV ug/L 25.00 111 % 70-130 Dibromofluromethane 8260B 04/06/22:204992VRG CCV ug/L 25.00 98.2 % 70-130 Dibromomethane 8260B 04/06/22:204992VRG CCV ug/L 25.00 146 % 70-130 360 Dichlorodifluoromethane 8260B 04/06/22:204992VRG CCV ug/L 25.00 102 % 70-130 Dichloromethane 8260B 04/06/22:204992VRG CCV ug/L 25.00 97.9 % 70-130 Ethyl tert-Butyl Ether 8260B 04/06/22:204992VRG CCV ug/L 25.00 115 % 50-150 Ethylbenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 102 % 80-120 Hexachlorobutadiene 8260B 04/06/22:204992VRG CCV ug/L 25.00 174 % 70-130 360 Isopropyl Ether 8260B 04/06/22:204992VRG CCV ug/L 25.00 124 % 50-150 Isopropylbenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 88.7 % 70-130 Page 14 of 15 April 13, 2022 Lab ID : CC 2281113 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 04/06/22:204992VRG CCV ug/L 25.00 115 % 70-130 n-Butylbenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 93.1 % 70-130 n-Propylbenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 87.7 % 70-130 p-Isopropyltoluene 8260B 04/06/22:204992VRG CCV ug/L 25.00 90.9 % 70-130 sec-Butylbenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 86.1 % 70-130 Styrene 8260B 04/06/22:204992VRG CCV ug/L 25.00 104 % 70-130 TAME 8260B 04/06/22:204992VRG CCV ug/L 25.00 129 % 50-150 tert-Butanol 8260B 04/06/22:204992VRG CCV ug/L 125.0 109 % 50-150 tert-Butylbenzene 8260B 04/06/22:204992VRG CCV ug/L 25.00 88.5 % 70-130 Tetrachloroethylene (PCE) 8260B 04/06/22:204992VRG CCV ug/L 25.00 98.4 % 70-130 Toluene 8260B 04/06/22:204992VRG CCV ug/L 25.00 95.4 % 80-120 Toluene-d8 8260B 04/06/22:204992VRG CCV ug/L 25.00 104 % 70-130 trans-1,2-Dichloroethylene 8260B 04/06/22:204992VRG CCV ug/L 25.00 96.2 % 70-130 trans-1,3-Dichloropropene 8260B 04/06/22:204992VRG CCV ug/L 25.00 117 % 70-130 Trichloroethylene (TCE) 8260B 04/06/22:204992VRG CCV ug/L 25.00 107 % 70-130 Trichlorofluoromethane F-11 8260B 04/06/22:204992VRG CCV ug/L 25.00 71.0 % 70-130 Vinyl Acetate 8260B 04/06/22:204992VRG CCV ug/L 100.0 113 % 50-150 Vinyl Chloride 8260B 04/06/22:204992VRG CCV ug/L 25.00 87.8 % 80-120 Xylene m,p 8260B 04/06/22:204992VRG CCV ug/L 50.00 98.2 % 70-130 Xylenes o 8260B 04/06/22:204992VRG CCV ug/L 25.00 101 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 330 : The LCS was out of acceptance limits. Results may be biased high. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 15 of 15 April 18, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280838 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 18 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (12 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-25-18 Depth 03/08/2022 03/08/2022 CC 2280838-001 GW B-25-27 Depth 03/08/2022 03/08/2022 CC 2280838-002 GW B-25-38 Depth 03/08/2022 03/08/2022 CC 2280838-003 GW B-25- 57 Depth 03/08/2022 03/08/2022 CC 2280838-004 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/14/2022:202855 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573). 8260B 03/14/2022:203755 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrolein, Acrylonitrile, Hexachlorobutadiene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 18 April 18, 2022 Lab ID : CC 2280838 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-18 Page 2 of 18 April 18, 2022 Lab ID : CC 2280838-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 8, 2022-14:40 Sampled By : David Gay Received On : March 8, 2022-17:11 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-25-18 Depth Project : SLO PCE B-25 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 97.7 78-125* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 102 85-124* % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 96.4 84-126* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 91.3 77-129* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 18 April 18, 2022 Lab ID : CC 2280838-001 Description : B-25-18 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 4 of 18 April 18, 2022 Lab ID : CC 2280838-001 Description : B-25-18 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 18 April 18, 2022 Lab ID : CC 2280838-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 8, 2022-15:08 Sampled By : David Gay Received On : March 8, 2022-17:11 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-25-27 Depth Project : SLO PCE B-25 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 98.6 78-125* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 102 85-124* % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 101 84-126* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 92.2 77-129* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 18 April 18, 2022 Lab ID : CC 2280838-002 Description : B-25-27 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 7 of 18 April 18, 2022 Lab ID : CC 2280838-002 Description : B-25-27 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 18 April 18, 2022 Lab ID : CC 2280838-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 8, 2022-15:40 Sampled By : David Gay Received On : March 8, 2022-17:11 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-25-38 Depth Project : SLO PCE B-25 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 96.6 78-125* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 109 85-124* % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 96.9 84-126* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 94.1 77-129* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 18 April 18, 2022 Lab ID : CC 2280838-003 Description : B-25-38 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 10 of 18 April 18, 2022 Lab ID : CC 2280838-003 Description : B-25-38 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 18 April 18, 2022 Lab ID : CC 2280838-004 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 8, 2022-16:36 Sampled By : David Gay Received On : March 8, 2022-17:11 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-25- 57 Depth Project : SLO PCE B-25 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 99.4 78-125* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 103 85-124* % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 102 84-126* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 92.6 77-129* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 18 April 18, 2022 Lab ID : CC 2280838-004 Description : B-25- 57 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 13 of 18 April 18, 2022 Lab ID : CC 2280838-004 Description : B-25- 57 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 14 of 18 This Page is to be Stamped April 18, 2022 Lab ID : CC 2280838 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 72.7 % 52-137 MS ug/L 25.00 105 % 25-179 (CC 2280876-004) MSD ug/L 25.00 108 % 25-179 MSRPD ug/L 0.000 3.4% ≤26 1,1-Dichloropropene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/14/22:202855VRG Blank ug/L 25.00 103 % 84-126 LCS ug/L 25.00 104 % 84-126 MS ug/L 25.00 103 % 84-126 (CC 2280876-004) MSD ug/L 25.00 98.4 % 84-126 MSRPD ug/L 0.000 4.2% ≤20.0 1,2-Dichloropropane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/14/22:202855VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/14/22:202855VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/14/22:202855VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/14/22:202855VRG Blank ug/L 25.00 98.2 % 78-125 LCS ug/L 25.00 97.0 % 78-125 MS ug/L 25.00 100 % 0-200 (CC 2280876-004) MSD ug/L 25.00 102 % 0-200 MSRPD ug/L 0.000 2.1% ≤20.0 4-Chlorotoluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/14/22:202855VRG Blank ug/L ND <10 Acetone 5030B 03/14/22:202855VRG Blank ug/L ND <50 Acrolein 5030B 03/14/22:202855VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/14/22:202855VRG Blank ug/L ND <50 Benzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 83.6 % 60-134 MS ug/L 25.00 103 % 47-169 (CC 2280876-004) MSD ug/L 25.00 107 % 47-169 MSRPD ug/L 0.000 3.7% ≤24 Bromobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Bromoform 5030B 03/14/22:202855VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/14/22:202855VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/14/22:202855VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 84.6 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 15 of 18 April 18, 2022 Lab ID : CC 2280838 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 97.7 % 31-212 (CC 2280876-004) MSD ug/L 25.00 108 % 31-212 MSRPD ug/L 0.000 9.9% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/14/22:202855VRG Blank ug/L ND <1 Chloroform 5030B 03/14/22:202855VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/14/22:202855VRG Blank ug/L 25.00 98.1 % 85-124 LCS ug/L 25.00 101 % 85-124 MS ug/L 25.00 103 % 85-124 (CC 2280876-004) MSD ug/L 25.00 106 % 85-124 MSRPD ug/L 0.000 2.8% ≤20.0 Dibromomethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/14/22:202855VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Freon-11 5030B 03/14/22:202855VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/14/22:202855VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/14/22:202855VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/14/22:202855VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Styrene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 TAME 5030B 03/14/22:202855VRG Blank ug/L ND <5 tert-Butanol 5030B 03/14/22:202855VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Toluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 72.8 % 56-131 MS ug/L 25.00 80.4 % 44-164 (CC 2280876-004) MSD ug/L 25.00 85.5 % 44-164 MSRPD ug/L 0.000 6.2% ≤30 Toluene-d8 5030B 03/14/22:202855VRG Blank ug/L 25.00 98.6 % 77-129 LCS ug/L 25.00 100 % 77-129 MS ug/L 25.00 91.4 % 77-129 (CC 2280876-004) MSD ug/L 25.00 84.5 % 77-129 MSRPD ug/L 0.000 7.8% ≤20 trans-1,2-Dichloroethylene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 78.9 % 61-123 MS ug/L 25.00 98.0 % 41-167 (CC 2280876-004) MSD ug/L 25.00 99.2 % 41-167 MSRPD ug/L 0.000 1.3% ≤32 Vinyl Acetate 5030B 03/14/22:202855VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/14/22:202855VRG Blank ug/L ND <2 Xylenes o 5030B 03/14/22:202855VRG Blank ug/L ND <2 Page 16 of 18 April 18, 2022 Lab ID : CC 2280838 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.5 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/14/22:203755VRG CCV ug/L 25.00 109 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 95.3 % 70-130 1,1,2-Trichloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 89.2 % 70-130 1,1-Dichloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 107 % 70-130 1,1-Dichloroethylene 8260B 03/14/22:203755VRG CCV ug/L 25.00 113 % 80-120 1,1-Dichloropropene 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 1,2,3-Trichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 686 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 249 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 101 % 70-130 1,2-Dichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.5 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/14/22:203755VRG CCV ug/L 25.00 111 % 70-130 1,2-Dichloroethane-d4 8260B 03/14/22:203755VRG CCV ug/L 25.00 98.9 % 70-130 1,2-Dichloropropane 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.1 % 80-120 1,3,5-Trimethylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.0 % 70-130 1,3-Dichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 94.1 % 70-130 1,3-Dichloropropane 8260B 03/14/22:203755VRG CCV ug/L 25.00 113 % 70-130 1,4-Dichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 95.6 % 70-130 2,2-Dichloropropane 8260B 03/14/22:203755VRG CCV ug/L 25.00 107 % 70-130 2-Butanone (MEK) 8260B 03/14/22:203755VRG CCV ug/L 100.0 123 % 50-150 2-Chloroethylvinyl ether 8260B 03/14/22:203755VRG CCV ug/L 100.0 128 % 50-150 2-Chlorotoluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 105 % 70-130 2-Hexanone 8260B 03/14/22:203755VRG CCV ug/L 100.0 144 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.6 % 70-130 4-Chlorotoluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 92.3 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/14/22:203755VRG CCV ug/L 100.0 121 % 50-150 Acetone 8260B 03/14/22:203755VRG CCV ug/L 100.0 87.1 % 50-150 Acrolein 8260B 03/14/22:203755VRG CCV ug/L 100.0 161 % 50-150 360 Acrylonitrile 8260B 03/14/22:203755VRG CCV ug/L 100.0 177 % 50-150 360 Benzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 111 % 70-130 Bromobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.2 % 70-130 Bromochloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 102 % 70-130 Bromodichloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 95.9 % 70-130 Bromoform 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.6 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/14/22:203755VRG CCV ug/L 25.00 87.8 % 70-130 Carbon Disulfide 8260B 03/14/22:203755VRG CCV ug/L 100.0 87.4 % 50-150 Carbon Tetrachloride 8260B 03/14/22:203755VRG CCV ug/L 25.00 109 % 70-130 Chlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 101 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/14/22:203755VRG CCV ug/L 25.00 93.7 % 70-130 Chloroform 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.7 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.3 % 70-130 cis-1,2-Dichloroethylene 8260B 03/14/22:203755VRG CCV ug/L 25.00 107 % 70-130 cis-1,3-Dichloropropene 8260B 03/14/22:203755VRG CCV ug/L 25.00 101 % 70-130 Dibromochloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 94.0 % 70-130 Dibromofluromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.5 % 70-130 Dibromomethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.5 % 70-130 Dichlorodifluoromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 73.9 % 70-130 Dichloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 103 % 70-130 Ethyl tert-Butyl Ether 8260B 03/14/22:203755VRG CCV ug/L 25.00 114 % 50-150 Ethylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 111 % 80-120 Hexachlorobutadiene 8260B 03/14/22:203755VRG CCV ug/L 25.00 176 % 70-130 360 Isopropyl Ether 8260B 03/14/22:203755VRG CCV ug/L 25.00 120 % 50-150 Isopropylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 90.7 % 70-130 Page 17 of 18 April 18, 2022 Lab ID : CC 2280838 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/14/22:203755VRG CCV ug/L 25.00 116 % 70-130 n-Butylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 n-Propylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 92.4 % 70-130 p-Isopropyltoluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.0 % 70-130 sec-Butylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 91.9 % 70-130 Styrene 8260B 03/14/22:203755VRG CCV ug/L 25.00 106 % 70-130 TAME 8260B 03/14/22:203755VRG CCV ug/L 25.00 115 % 50-150 tert-Butanol 8260B 03/14/22:203755VRG CCV ug/L 125.0 113 % 50-150 tert-Butylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 93.3 % 70-130 Tetrachloroethylene (PCE) 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 Toluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.7 % 80-120 Toluene-d8 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 trans-1,2-Dichloroethylene 8260B 03/14/22:203755VRG CCV ug/L 25.00 108 % 70-130 trans-1,3-Dichloropropene 8260B 03/14/22:203755VRG CCV ug/L 25.00 100 % 70-130 Trichloroethylene (TCE) 8260B 03/14/22:203755VRG CCV ug/L 25.00 102 % 70-130 Trichlorofluoromethane F-11 8260B 03/14/22:203755VRG CCV ug/L 25.00 80.6 % 70-130 Vinyl Acetate 8260B 03/14/22:203755VRG CCV ug/L 100.0 134 % 50-150 Vinyl Chloride 8260B 03/14/22:203755VRG CCV ug/L 25.00 80.9 % 80-120 Xylene m,p 8260B 03/14/22:203755VRG CCV ug/L 50.00 105 % 70-130 Xylenes o 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.9 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 18 of 18 April 18, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280875 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 18 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (12 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-29-18 Depth 03/09/2022 03/11/2022 CC 2280875-001 GW B-29-56 Depth 03/09/2022 03/11/2022 CC 2280875-002 GW B-29-62 Depth 03/09/2022 03/11/2022 CC 2280875-003 GW B-29-71 Depth 03/10/2022 03/11/2022 CC 2280875-004 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/14/2022:202855 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573). 8260B 03/14/2022:203755 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrolein, Acrylonitrile, Hexachlorobutadiene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 18 April 18, 2022 Lab ID : CC 2280875 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-18 Page 2 of 18 April 18, 2022 Lab ID : CC 2280875-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 9, 2022-13:54 Sampled By : David Gay Received On : March 11, 2022-15:57 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-29-18 Depth Project : SLO PCE B-29 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 96.2 78-125* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 100 85-124* % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 103 84-126* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 95.8 77-129* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 18 April 18, 2022 Lab ID : CC 2280875-001 Description : B-29-18 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 4 of 18 April 18, 2022 Lab ID : CC 2280875-001 Description : B-29-18 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 18 April 18, 2022 Lab ID : CC 2280875-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 9, 2022-16:02 Sampled By : David Gay Received On : March 11, 2022-15:57 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-29-56 Depth Project : SLO PCE B-29 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 97.3 78-125* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 100 85-124* % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 101 84-126* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 89.9 77-129* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 18 April 18, 2022 Lab ID : CC 2280875-002 Description : B-29-56 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene 2 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 7 of 18 April 18, 2022 Lab ID : CC 2280875-002 Description : B-29-56 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 18 April 18, 2022 Lab ID : CC 2280875-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 9, 2022-16:31 Sampled By : David Gay Received On : March 11, 2022-15:57 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-29-62 Depth Project : SLO PCE B-29 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 97.9 78-125* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 105 85-124* % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 97.0 84-126* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 87.3 77-129* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 18 April 18, 2022 Lab ID : CC 2280875-003 Description : B-29-62 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene 1 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 10 of 18 April 18, 2022 Lab ID : CC 2280875-003 Description : B-29-62 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 18 April 18, 2022 Lab ID : CC 2280875-004 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 10, 2022-08:47 Sampled By : David Gay Received On : March 11, 2022-15:57 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-29-71 Depth Project : SLO PCE B-29 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 101 78-125* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 101 85-124* % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 106 84-126* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 90.0 77-129* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 18 April 18, 2022 Lab ID : CC 2280875-004 Description : B-29-71 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene 2 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 13 of 18 April 18, 2022 Lab ID : CC 2280875-004 Description : B-29-71 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 14 of 18 This Page is to be Stamped April 18, 2022 Lab ID : CC 2280875 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 72.7 % 52-137 MS ug/L 25.00 105 % 25-179 (CC 2280876-004) MSD ug/L 25.00 108 % 25-179 MSRPD ug/L 0.000 3.4% ≤26 1,1-Dichloropropene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/14/22:202855VRG Blank ug/L 25.00 103 % 84-126 LCS ug/L 25.00 104 % 84-126 MS ug/L 25.00 103 % 84-126 (CC 2280876-004) MSD ug/L 25.00 98.4 % 84-126 MSRPD ug/L 0.000 4.2% ≤20.0 1,2-Dichloropropane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/14/22:202855VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/14/22:202855VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/14/22:202855VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/14/22:202855VRG Blank ug/L 25.00 98.2 % 78-125 LCS ug/L 25.00 97.0 % 78-125 MS ug/L 25.00 100 % 0-200 (CC 2280876-004) MSD ug/L 25.00 102 % 0-200 MSRPD ug/L 0.000 2.1% ≤20.0 4-Chlorotoluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/14/22:202855VRG Blank ug/L ND <10 Acetone 5030B 03/14/22:202855VRG Blank ug/L ND <50 Acrolein 5030B 03/14/22:202855VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/14/22:202855VRG Blank ug/L ND <50 Benzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 83.6 % 60-134 MS ug/L 25.00 103 % 47-169 (CC 2280876-004) MSD ug/L 25.00 107 % 47-169 MSRPD ug/L 0.000 3.7% ≤24 Bromobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Bromoform 5030B 03/14/22:202855VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/14/22:202855VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/14/22:202855VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 84.6 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 15 of 18 April 18, 2022 Lab ID : CC 2280875 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 97.7 % 31-212 (CC 2280876-004) MSD ug/L 25.00 108 % 31-212 MSRPD ug/L 0.000 9.9% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/14/22:202855VRG Blank ug/L ND <1 Chloroform 5030B 03/14/22:202855VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/14/22:202855VRG Blank ug/L 25.00 98.1 % 85-124 LCS ug/L 25.00 101 % 85-124 MS ug/L 25.00 103 % 85-124 (CC 2280876-004) MSD ug/L 25.00 106 % 85-124 MSRPD ug/L 0.000 2.8% ≤20.0 Dibromomethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/14/22:202855VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Freon-11 5030B 03/14/22:202855VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/14/22:202855VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/14/22:202855VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/14/22:202855VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Styrene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 TAME 5030B 03/14/22:202855VRG Blank ug/L ND <5 tert-Butanol 5030B 03/14/22:202855VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Toluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 72.8 % 56-131 MS ug/L 25.00 80.4 % 44-164 (CC 2280876-004) MSD ug/L 25.00 85.5 % 44-164 MSRPD ug/L 0.000 6.2% ≤30 Toluene-d8 5030B 03/14/22:202855VRG Blank ug/L 25.00 98.6 % 77-129 LCS ug/L 25.00 100 % 77-129 MS ug/L 25.00 91.4 % 77-129 (CC 2280876-004) MSD ug/L 25.00 84.5 % 77-129 MSRPD ug/L 0.000 7.8% ≤20 trans-1,2-Dichloroethylene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 78.9 % 61-123 MS ug/L 25.00 98.0 % 41-167 (CC 2280876-004) MSD ug/L 25.00 99.2 % 41-167 MSRPD ug/L 0.000 1.3% ≤32 Vinyl Acetate 5030B 03/14/22:202855VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/14/22:202855VRG Blank ug/L ND <2 Xylenes o 5030B 03/14/22:202855VRG Blank ug/L ND <2 Page 16 of 18 April 18, 2022 Lab ID : CC 2280875 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.5 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/14/22:203755VRG CCV ug/L 25.00 109 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 95.3 % 70-130 1,1,2-Trichloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 89.2 % 70-130 1,1-Dichloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 107 % 70-130 1,1-Dichloroethylene 8260B 03/14/22:203755VRG CCV ug/L 25.00 113 % 80-120 1,1-Dichloropropene 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 1,2,3-Trichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 686 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 249 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 101 % 70-130 1,2-Dichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.5 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/14/22:203755VRG CCV ug/L 25.00 111 % 70-130 1,2-Dichloroethane-d4 8260B 03/14/22:203755VRG CCV ug/L 25.00 98.9 % 70-130 1,2-Dichloropropane 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.1 % 80-120 1,3,5-Trimethylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.0 % 70-130 1,3-Dichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 94.1 % 70-130 1,3-Dichloropropane 8260B 03/14/22:203755VRG CCV ug/L 25.00 113 % 70-130 1,4-Dichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 95.6 % 70-130 2,2-Dichloropropane 8260B 03/14/22:203755VRG CCV ug/L 25.00 107 % 70-130 2-Butanone (MEK) 8260B 03/14/22:203755VRG CCV ug/L 100.0 123 % 50-150 2-Chloroethylvinyl ether 8260B 03/14/22:203755VRG CCV ug/L 100.0 128 % 50-150 2-Chlorotoluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 105 % 70-130 2-Hexanone 8260B 03/14/22:203755VRG CCV ug/L 100.0 144 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.6 % 70-130 4-Chlorotoluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 92.3 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/14/22:203755VRG CCV ug/L 100.0 121 % 50-150 Acetone 8260B 03/14/22:203755VRG CCV ug/L 100.0 87.1 % 50-150 Acrolein 8260B 03/14/22:203755VRG CCV ug/L 100.0 161 % 50-150 360 Acrylonitrile 8260B 03/14/22:203755VRG CCV ug/L 100.0 177 % 50-150 360 Benzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 111 % 70-130 Bromobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.2 % 70-130 Bromochloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 102 % 70-130 Bromodichloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 95.9 % 70-130 Bromoform 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.6 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/14/22:203755VRG CCV ug/L 25.00 87.8 % 70-130 Carbon Disulfide 8260B 03/14/22:203755VRG CCV ug/L 100.0 87.4 % 50-150 Carbon Tetrachloride 8260B 03/14/22:203755VRG CCV ug/L 25.00 109 % 70-130 Chlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 101 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/14/22:203755VRG CCV ug/L 25.00 93.7 % 70-130 Chloroform 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.7 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.3 % 70-130 cis-1,2-Dichloroethylene 8260B 03/14/22:203755VRG CCV ug/L 25.00 107 % 70-130 cis-1,3-Dichloropropene 8260B 03/14/22:203755VRG CCV ug/L 25.00 101 % 70-130 Dibromochloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 94.0 % 70-130 Dibromofluromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.5 % 70-130 Dibromomethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.5 % 70-130 Dichlorodifluoromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 73.9 % 70-130 Dichloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 103 % 70-130 Ethyl tert-Butyl Ether 8260B 03/14/22:203755VRG CCV ug/L 25.00 114 % 50-150 Ethylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 111 % 80-120 Hexachlorobutadiene 8260B 03/14/22:203755VRG CCV ug/L 25.00 176 % 70-130 360 Isopropyl Ether 8260B 03/14/22:203755VRG CCV ug/L 25.00 120 % 50-150 Isopropylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 90.7 % 70-130 Page 17 of 18 April 18, 2022 Lab ID : CC 2280875 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/14/22:203755VRG CCV ug/L 25.00 116 % 70-130 n-Butylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 n-Propylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 92.4 % 70-130 p-Isopropyltoluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.0 % 70-130 sec-Butylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 91.9 % 70-130 Styrene 8260B 03/14/22:203755VRG CCV ug/L 25.00 106 % 70-130 TAME 8260B 03/14/22:203755VRG CCV ug/L 25.00 115 % 50-150 tert-Butanol 8260B 03/14/22:203755VRG CCV ug/L 125.0 113 % 50-150 tert-Butylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 93.3 % 70-130 Tetrachloroethylene (PCE) 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 Toluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.7 % 80-120 Toluene-d8 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 trans-1,2-Dichloroethylene 8260B 03/14/22:203755VRG CCV ug/L 25.00 108 % 70-130 trans-1,3-Dichloropropene 8260B 03/14/22:203755VRG CCV ug/L 25.00 100 % 70-130 Trichloroethylene (TCE) 8260B 03/14/22:203755VRG CCV ug/L 25.00 102 % 70-130 Trichlorofluoromethane F-11 8260B 03/14/22:203755VRG CCV ug/L 25.00 80.6 % 70-130 Vinyl Acetate 8260B 03/14/22:203755VRG CCV ug/L 100.0 134 % 50-150 Vinyl Chloride 8260B 03/14/22:203755VRG CCV ug/L 25.00 80.9 % 80-120 Xylene m,p 8260B 03/14/22:203755VRG CCV ug/L 50.00 105 % 70-130 Xylenes o 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.9 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 18 of 18 April 18, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280876 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 21 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (15 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-31-37 Depth 03/11/2022 03/11/2022 CC 2280876-001 GW B-31-53 Depth 03/11/2022 03/11/2022 CC 2280876-002 GW B-31-59 Depth 03/11/2022 03/11/2022 CC 2280876-003 GW B-31-74 Depth 03/11/2022 03/11/2022 CC 2280876-004 GW B-31-83 Depth 03/11/2022 03/11/2022 CC 2280876-005 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/14/2022:202855 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573). 8260B 03/14/2022:203755 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrolein, Acrylonitrile, Hexachlorobutadiene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 21 April 18, 2022 Lab ID : CC 2280876 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-18 Page 2 of 21 April 18, 2022 Lab ID : CC 2280876-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 11, 2022-07:15 Sampled By : David Gay Received On : March 11, 2022-15:57 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-31-37 Depth Project : SLO PCE B-31 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 96.7 78-125 % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 102 85-124 % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 97.3 84-126 % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 92.2 77-129 % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 50 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 50 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 50 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 21 April 18, 2022 Lab ID : CC 2280876-001 Description : B-31-37 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 4 of 21 April 18, 2022 Lab ID : CC 2280876-001 Description : B-31-37 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 21 April 18, 2022 Lab ID : CC 2280876-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 11, 2022-09:10 Sampled By : David Gay Received On : March 11, 2022-15:57 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-31-53 Depth Project : SLO PCE B-31 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 97.8 78-125* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 104 85-124* % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 99.3 84-126* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 85.4 77-129* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 21 April 18, 2022 Lab ID : CC 2280876-002 Description : B-31-53 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 7 of 21 April 18, 2022 Lab ID : CC 2280876-002 Description : B-31-53 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 21 April 18, 2022 Lab ID : CC 2280876-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 11, 2022-09:44 Sampled By : David Gay Received On : March 11, 2022-15:57 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-31-59 Depth Project : SLO PCE B-31 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 98.3 78-125* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 105 85-124* % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 105 84-126* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 89.3 77-129* % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 100* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 21 April 18, 2022 Lab ID : CC 2280876-003 Description : B-31-59 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 2* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 1* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 10 of 21 April 18, 2022 Lab ID : CC 2280876-003 Description : B-31-59 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 20* ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 21 April 18, 2022 Lab ID : CC 2280876-004 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 11, 2022-10:57 Sampled By : David Gay Received On : March 11, 2022-15:57 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-31-74 Depth Project : SLO PCE B-31 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 95.8 78-125 % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 97.5 85-124 % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 98.9 84-126 % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 96.2 77-129 % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 50 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 50 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 50 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 21 April 18, 2022 Lab ID : CC 2280876-004 Description : B-31-74 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 13 of 21 April 18, 2022 Lab ID : CC 2280876-004 Description : B-31-74 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 14 of 21 April 18, 2022 Lab ID : CC 2280876-005 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 11, 2022-11:51 Sampled By : David Gay Received On : March 11, 2022-15:57 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-31-83 Depth Project : SLO PCE B-31 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 98.0 78-125 % 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromofluoromethane‡ 103 85-124 % 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane-d4‡ 102 84-126 % 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene-d8‡ 98.6 77-129 % 5030B 03/14/22:202855 8260B 03/14/22:203755 Acetone ND 50 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrolein ND 50 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Acrylonitrile ND 50 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Benzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromochloromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromodichloromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromoform ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Bromomethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butanol ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Butanone (MEK) ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Butylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 sec-Butylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Butylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Disulfide ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Carbon Tetrachloride ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroethane ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloroform ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Chloromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chlorotoluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Chlorotoluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromochloromethane ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dibromomethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 15 of 21 April 18, 2022 Lab ID : CC 2280876-005 Description : B-31-83 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl Benzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Hexachlorobutadiene ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Hexanone ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Isopropylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Methylene Chloride ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 n-Propylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Styrene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Tetrachloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Toluene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichloroethylene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Trichlorofluoromethane ND 1 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Acetate ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Vinyl Chloride ND 0.5 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes ND -- ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Xylenes m,p ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 Page 16 of 21 April 18, 2022 Lab ID : CC 2280876-005 Description : B-31-83 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 2-Chloroethylvinylether ND 10 ug/L 5030B 03/14/22:202855 8260B 03/14/22:203755 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 17 of 21 This Page is to be Stamped April 18, 2022 Lab ID : CC 2280876 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 72.7 % 52-137 MS ug/L 25.00 105 % 25-179 (CC 2280876-004) MSD ug/L 25.00 108 % 25-179 MSRPD ug/L 0.000 3.4% ≤26 1,1-Dichloropropene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/14/22:202855VRG Blank ug/L 25.00 103 % 84-126 LCS ug/L 25.00 104 % 84-126 MS ug/L 25.00 103 % 84-126 (CC 2280876-004) MSD ug/L 25.00 98.4 % 84-126 MSRPD ug/L 0.000 4.2% ≤20.0 1,2-Dichloropropane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/14/22:202855VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/14/22:202855VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/14/22:202855VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/14/22:202855VRG Blank ug/L 25.00 98.2 % 78-125 LCS ug/L 25.00 97.0 % 78-125 MS ug/L 25.00 100 % 0-200 (CC 2280876-004) MSD ug/L 25.00 102 % 0-200 MSRPD ug/L 0.000 2.1% ≤20.0 4-Chlorotoluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/14/22:202855VRG Blank ug/L ND <10 Acetone 5030B 03/14/22:202855VRG Blank ug/L ND <50 Acrolein 5030B 03/14/22:202855VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/14/22:202855VRG Blank ug/L ND <50 Benzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 83.6 % 60-134 MS ug/L 25.00 103 % 47-169 (CC 2280876-004) MSD ug/L 25.00 107 % 47-169 MSRPD ug/L 0.000 3.7% ≤24 Bromobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Bromoform 5030B 03/14/22:202855VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/14/22:202855VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/14/22:202855VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 84.6 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 18 of 21 April 18, 2022 Lab ID : CC 2280876 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 97.7 % 31-212 (CC 2280876-004) MSD ug/L 25.00 108 % 31-212 MSRPD ug/L 0.000 9.9% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/14/22:202855VRG Blank ug/L ND <1 Chloroform 5030B 03/14/22:202855VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/14/22:202855VRG Blank ug/L 25.00 98.1 % 85-124 LCS ug/L 25.00 101 % 85-124 MS ug/L 25.00 103 % 85-124 (CC 2280876-004) MSD ug/L 25.00 106 % 85-124 MSRPD ug/L 0.000 2.8% ≤20.0 Dibromomethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/14/22:202855VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/14/22:202855VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Freon-11 5030B 03/14/22:202855VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/14/22:202855VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/14/22:202855VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/14/22:202855VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Styrene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 TAME 5030B 03/14/22:202855VRG Blank ug/L ND <5 tert-Butanol 5030B 03/14/22:202855VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Toluene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 72.8 % 56-131 MS ug/L 25.00 80.4 % 44-164 (CC 2280876-004) MSD ug/L 25.00 85.5 % 44-164 MSRPD ug/L 0.000 6.2% ≤30 Toluene-d8 5030B 03/14/22:202855VRG Blank ug/L 25.00 98.6 % 77-129 LCS ug/L 25.00 100 % 77-129 MS ug/L 25.00 91.4 % 77-129 (CC 2280876-004) MSD ug/L 25.00 84.5 % 77-129 MSRPD ug/L 0.000 7.8% ≤20 trans-1,2-Dichloroethylene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 LCS ug/L 25.00 78.9 % 61-123 MS ug/L 25.00 98.0 % 41-167 (CC 2280876-004) MSD ug/L 25.00 99.2 % 41-167 MSRPD ug/L 0.000 1.3% ≤32 Vinyl Acetate 5030B 03/14/22:202855VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/14/22:202855VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/14/22:202855VRG Blank ug/L ND <2 Xylenes o 5030B 03/14/22:202855VRG Blank ug/L ND <2 Page 19 of 21 April 18, 2022 Lab ID : CC 2280876 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.5 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/14/22:203755VRG CCV ug/L 25.00 109 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 95.3 % 70-130 1,1,2-Trichloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 89.2 % 70-130 1,1-Dichloroethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 107 % 70-130 1,1-Dichloroethylene 8260B 03/14/22:203755VRG CCV ug/L 25.00 113 % 80-120 1,1-Dichloropropene 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 1,2,3-Trichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 686 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 249 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 101 % 70-130 1,2-Dichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.5 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/14/22:203755VRG CCV ug/L 25.00 111 % 70-130 1,2-Dichloroethane-d4 8260B 03/14/22:203755VRG CCV ug/L 25.00 98.9 % 70-130 1,2-Dichloropropane 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.1 % 80-120 1,3,5-Trimethylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.0 % 70-130 1,3-Dichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 94.1 % 70-130 1,3-Dichloropropane 8260B 03/14/22:203755VRG CCV ug/L 25.00 113 % 70-130 1,4-Dichlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 95.6 % 70-130 2,2-Dichloropropane 8260B 03/14/22:203755VRG CCV ug/L 25.00 107 % 70-130 2-Butanone (MEK) 8260B 03/14/22:203755VRG CCV ug/L 100.0 123 % 50-150 2-Chloroethylvinyl ether 8260B 03/14/22:203755VRG CCV ug/L 100.0 128 % 50-150 2-Chlorotoluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 105 % 70-130 2-Hexanone 8260B 03/14/22:203755VRG CCV ug/L 100.0 144 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.6 % 70-130 4-Chlorotoluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 92.3 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/14/22:203755VRG CCV ug/L 100.0 121 % 50-150 Acetone 8260B 03/14/22:203755VRG CCV ug/L 100.0 87.1 % 50-150 Acrolein 8260B 03/14/22:203755VRG CCV ug/L 100.0 161 % 50-150 360 Acrylonitrile 8260B 03/14/22:203755VRG CCV ug/L 100.0 177 % 50-150 360 Benzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 111 % 70-130 Bromobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.2 % 70-130 Bromochloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 102 % 70-130 Bromodichloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 95.9 % 70-130 Bromoform 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.6 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/14/22:203755VRG CCV ug/L 25.00 87.8 % 70-130 Carbon Disulfide 8260B 03/14/22:203755VRG CCV ug/L 100.0 87.4 % 50-150 Carbon Tetrachloride 8260B 03/14/22:203755VRG CCV ug/L 25.00 109 % 70-130 Chlorobenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 101 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/14/22:203755VRG CCV ug/L 25.00 93.7 % 70-130 Chloroform 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.7 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.3 % 70-130 cis-1,2-Dichloroethylene 8260B 03/14/22:203755VRG CCV ug/L 25.00 107 % 70-130 cis-1,3-Dichloropropene 8260B 03/14/22:203755VRG CCV ug/L 25.00 101 % 70-130 Dibromochloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 94.0 % 70-130 Dibromofluromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.5 % 70-130 Dibromomethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 96.5 % 70-130 Dichlorodifluoromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 73.9 % 70-130 Dichloromethane 8260B 03/14/22:203755VRG CCV ug/L 25.00 103 % 70-130 Ethyl tert-Butyl Ether 8260B 03/14/22:203755VRG CCV ug/L 25.00 114 % 50-150 Ethylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 111 % 80-120 Hexachlorobutadiene 8260B 03/14/22:203755VRG CCV ug/L 25.00 176 % 70-130 360 Isopropyl Ether 8260B 03/14/22:203755VRG CCV ug/L 25.00 120 % 50-150 Isopropylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 90.7 % 70-130 Page 20 of 21 April 18, 2022 Lab ID : CC 2280876 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/14/22:203755VRG CCV ug/L 25.00 116 % 70-130 n-Butylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 n-Propylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 92.4 % 70-130 p-Isopropyltoluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.0 % 70-130 sec-Butylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 91.9 % 70-130 Styrene 8260B 03/14/22:203755VRG CCV ug/L 25.00 106 % 70-130 TAME 8260B 03/14/22:203755VRG CCV ug/L 25.00 115 % 50-150 tert-Butanol 8260B 03/14/22:203755VRG CCV ug/L 125.0 113 % 50-150 tert-Butylbenzene 8260B 03/14/22:203755VRG CCV ug/L 25.00 93.3 % 70-130 Tetrachloroethylene (PCE) 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 Toluene 8260B 03/14/22:203755VRG CCV ug/L 25.00 97.7 % 80-120 Toluene-d8 8260B 03/14/22:203755VRG CCV ug/L 25.00 104 % 70-130 trans-1,2-Dichloroethylene 8260B 03/14/22:203755VRG CCV ug/L 25.00 108 % 70-130 trans-1,3-Dichloropropene 8260B 03/14/22:203755VRG CCV ug/L 25.00 100 % 70-130 Trichloroethylene (TCE) 8260B 03/14/22:203755VRG CCV ug/L 25.00 102 % 70-130 Trichlorofluoromethane F-11 8260B 03/14/22:203755VRG CCV ug/L 25.00 80.6 % 70-130 Vinyl Acetate 8260B 03/14/22:203755VRG CCV ug/L 100.0 134 % 50-150 Vinyl Chloride 8260B 03/14/22:203755VRG CCV ug/L 25.00 80.9 % 80-120 Xylene m,p 8260B 03/14/22:203755VRG CCV ug/L 50.00 105 % 70-130 Xylenes o 8260B 03/14/22:203755VRG CCV ug/L 25.00 99.9 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 21 of 21 April 6, 2022 Water Systems Consulting, Inc. Lab ID : CC 2280921 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 27 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (21 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-32-47 Depth 03/15/2022 03/16/2022 CC 2280921-001 GW B-32-60 Depth 03/15/2022 03/16/2022 CC 2280921-002 GW B-32-68 Depth 03/15/2022 03/16/2022 CC 2280921-003 GW B-32-73 Depth 03/15/2022 03/16/2022 CC 2280921-004 GW B-32-84 Depth 03/15/2022 03/16/2022 CC 2280921-005 GW B-32-105 Depth 03/15/2022 03/16/2022 CC 2280921-006 GW B-32-116 Depth 03/15/2022 03/16/2022 CC 2280921-007 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 03/17/2022:202979 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573). 8260B 03/17/2022:204013 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Acrolein, Acrylonitrile: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 27 April 6, 2022 Lab ID : CC 2280921 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:MKHDigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-06 Page 2 of 27 April 6, 2022 Lab ID : CC 2280921-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 15, 2022-11:18 Sampled By : David Gay Received On : March 16, 2022-10:38 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-32-47 Depth Project : SLO PCE B-32 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 106 78-125 % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 98.8 85-124 % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 94.0 84-126 % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 92.9 77-129 % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 50 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 50 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 50 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 1 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 1 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 1 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 27 April 6, 2022 Lab ID : CC 2280921-001 Description : B-32-47 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene 1.5 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 1 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 0.5 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 4 of 27 April 6, 2022 Lab ID : CC 2280921-001 Description : B-32-47 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 10 ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 27 April 6, 2022 Lab ID : CC 2280921-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 15, 2022-11:58 Sampled By : David Gay Received On : March 16, 2022-10:38 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-32-60 Depth Project : SLO PCE B-32 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 107 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 109 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 95.8 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 86.6 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 27 April 6, 2022 Lab ID : CC 2280921-002 Description : B-32-60 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene 5 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 7 of 27 April 6, 2022 Lab ID : CC 2280921-002 Description : B-32-60 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 27 April 6, 2022 Lab ID : CC 2280921-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 15, 2022-12:27 Sampled By : David Gay Received On : March 16, 2022-10:38 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-32-68 Depth Project : SLO PCE B-32 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 101 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 105 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 104 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 92.8 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 27 April 6, 2022 Lab ID : CC 2280921-003 Description : B-32-68 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 10 of 27 April 6, 2022 Lab ID : CC 2280921-003 Description : B-32-68 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 27 April 6, 2022 Lab ID : CC 2280921-004 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 15, 2022-15:10 Sampled By : David Gay Received On : March 16, 2022-10:38 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-32-73 Depth Project : SLO PCE B-32 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 104 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 109 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 97.9 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 85.3 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 27 April 6, 2022 Lab ID : CC 2280921-004 Description : B-32-73 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 13 of 27 April 6, 2022 Lab ID : CC 2280921-004 Description : B-32-73 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 14 of 27 April 6, 2022 Lab ID : CC 2280921-005 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 15, 2022-16:03 Sampled By : David Gay Received On : March 16, 2022-10:38 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-32-84 Depth Project : SLO PCE B-32 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 101 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 105 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 101 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 92.2 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 15 of 27 April 6, 2022 Lab ID : CC 2280921-005 Description : B-32-84 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene 2 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 16 of 27 April 6, 2022 Lab ID : CC 2280921-005 Description : B-32-84 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 17 of 27 April 6, 2022 Lab ID : CC 2280921-006 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 15, 2022-17:12 Sampled By : David Gay Received On : March 16, 2022-10:38 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-32-105 Depth Project : SLO PCE B-32 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 102 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 107 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 106 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 88.6 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 18 of 27 April 6, 2022 Lab ID : CC 2280921-006 Description : B-32-105 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 19 of 27 April 6, 2022 Lab ID : CC 2280921-006 Description : B-32-105 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 20 of 27 April 6, 2022 Lab ID : CC 2280921-007 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 15, 2022-18:30 Sampled By : David Gay Received On : March 16, 2022-10:38 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-32-116 Depth Project : SLO PCE B-32 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 104 78-125* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromofluoromethane‡ 104 85-124* % 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane-d4‡ 101 84-126* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene-d8‡ 90.2 77-129* % 5030B 03/17/22:202979 8260B 03/17/22:204013 Acetone ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrolein ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Acrylonitrile ND 100* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromochloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromodichloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromoform ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Bromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butanol ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Butanone (MEK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 sec-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Butylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Disulfide ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Carbon Tetrachloride ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloroform ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Chloromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Chlorotoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromochloromethane ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dibromomethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,4-Dichlorobenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Dichlorodifluoromethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 21 of 27 April 6, 2022 Lab ID : CC 2280921-007 Description : B-32-116 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2,2-Dichloropropane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3-Dichloropropene (Total) ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 cis-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 trans-1,3-Dichloropropene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl Benzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Hexachlorobutadiene ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Hexanone ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Isopropylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 p-Isopropyltoluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Methylene Chloride ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 n-Propylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Styrene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Tetrachloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Toluene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,1-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,1,2-Trichloroethane ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichloroethylene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Trichlorofluoromethane ND 2* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Acetate ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Vinyl Chloride ND 1* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes ND -- ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Xylenes m,p ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 Page 22 of 27 April 6, 2022 Lab ID : CC 2280921-007 Description : B-32-116 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 2-Chloroethylvinylether ND 20* ug/L 5030B 03/17/22:202979 8260B 03/17/22:204013 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 23 of 27 This Page is to be Stamped April 6, 2022 Lab ID : CC 2280921 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 87.4 % 52-137 MS ug/L 25.00 94.1 % 25-179 (CC 2280698-002) MSD ug/L 25.00 91.7 % 25-179 MSRPD ug/L 25.00 2.6% ≤26 1,1-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 03/17/22:202979VRG Blank ug/L 25.00 98.5 % 84-126 LCS ug/L 25.00 97.1 % 84-126 MS ug/L 25.00 103 % 84-126 (CC 2280698-002) MSD ug/L 25.00 101 % 84-126 MSRPD ug/L 25.00 1.5% ≤20.0 1,2-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 03/17/22:202979VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 03/17/22:202979VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 2-Hexanone 5030B 03/17/22:202979VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 03/17/22:202979VRG Blank ug/L 25.00 103 % 78-125 LCS ug/L 25.00 98.9 % 78-125 MS ug/L 25.00 106 % 0-200 (CC 2280698-002) MSD ug/L 25.00 103 % 0-200 MSRPD ug/L 25.00 2.6% ≤20.0 4-Chlorotoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 03/17/22:202979VRG Blank ug/L ND <10 Acetone 5030B 03/17/22:202979VRG Blank ug/L ND <50 Acrolein 5030B 03/17/22:202979VRG Blank ug/L ND <50 Acrylonitrile 5030B 03/17/22:202979VRG Blank ug/L ND <50 Benzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 89.2 % 60-134 MS ug/L 25.00 118 % 47-169 (CC 2280698-002) MSD ug/L 25.00 112 % 47-169 MSRPD ug/L 25.00 5.5% ≤24 Bromobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Bromoform 5030B 03/17/22:202979VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 03/17/22:202979VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chlorobenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 95.4 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 24 of 27 April 6, 2022 Lab ID : CC 2280921 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 118 % 31-212 (CC 2280698-002) MSD ug/L 25.00 120 % 31-212 MSRPD ug/L 25.00 1.3% ≤27 Chloroethane (Ethyl Chloride) 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chloroform 5030B 03/17/22:202979VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <2 Dibromofluromethane 5030B 03/17/22:202979VRG Blank ug/L 25.00 108 % 85-124 LCS ug/L 25.00 102 % 85-124 MS ug/L 25.00 99.8 % 85-124 (CC 2280698-002) MSD ug/L 25.00 101 % 85-124 MSRPD ug/L 25.00 1.3% ≤20.0 Dibromomethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Dichloromethane 5030B 03/17/22:202979VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 03/17/22:202979VRG Blank ug/L ND <2 Ethylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Freon-11 5030B 03/17/22:202979VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 03/17/22:202979VRG Blank ug/L ND <5 Isopropyl Ether 5030B 03/17/22:202979VRG Blank ug/L ND <5 Isopropylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 03/17/22:202979VRG Blank ug/L ND <2 n-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Styrene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 TAME 5030B 03/17/22:202979VRG Blank ug/L ND <5 tert-Butanol 5030B 03/17/22:202979VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Toluene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 80.1 % 56-131 MS ug/L 25.00 97.5 % 44-164 (CC 2280698-002) MSD ug/L 25.00 90.0 % 44-164 MSRPD ug/L 25.00 7.9% ≤30 Toluene-d8 5030B 03/17/22:202979VRG Blank ug/L 25.00 89.8 % 77-129 LCS ug/L 25.00 93.7 % 77-129 MS ug/L 25.00 96.0 % 77-129 (CC 2280698-002) MSD ug/L 25.00 93.0 % 77-129 MSRPD ug/L 25.00 3.2% ≤20 trans-1,2-Dichloroethylene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 LCS ug/L 25.00 94.1 % 61-123 MS ug/L 25.00 103 % 41-167 (CC 2280698-002) MSD ug/L 25.00 98.2 % 41-167 MSRPD ug/L 25.00 5.0% ≤32 Vinyl Acetate 5030B 03/17/22:202979VRG Blank ug/L ND <10 Vinyl Chloride 5030B 03/17/22:202979VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 03/17/22:202979VRG Blank ug/L ND <2 Xylenes o 5030B 03/17/22:202979VRG Blank ug/L ND <2 Page 25 of 27 April 6, 2022 Lab ID : CC 2280921 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 94.6 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 03/17/22:204013VRG CCV ug/L 25.00 110 % 70-130 1,1,2,2-Tetrachloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.9 % 70-130 1,1,2-Trichloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 91.6 % 70-130 1,1-Dichloroethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 1,1-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 80-120 1,1-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 105 % 70-130 1,2,3-Trichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 191 % 70-130 360 1,2,4-Trichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 143 % 70-130 360 1,2,4-Trimethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 1,2-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 1,2-Dichloroethane (EDC) 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 1,2-Dichloroethane-d4 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.7 % 70-130 1,2-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 80-120 1,3,5-Trimethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 103 % 70-130 1,3-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.4 % 70-130 1,3-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 1,4-Dichlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 2,2-Dichloropropane 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 70-130 2-Butanone (MEK) 8260B 03/17/22:204013VRG CCV ug/L 100.0 107 % 50-150 2-Chloroethylvinyl ether 8260B 03/17/22:204013VRG CCV ug/L 100.0 106 % 50-150 2-Chlorotoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 2-Hexanone 8260B 03/17/22:204013VRG CCV ug/L 100.0 132 % 50-150 4-Bromofluorobenzene (BFB) 8260B 03/17/22:204013VRG CCV ug/L 25.00 96.7 % 70-130 4-Chlorotoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.3 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 03/17/22:204013VRG CCV ug/L 100.0 114 % 50-150 Acetone 8260B 03/17/22:204013VRG CCV ug/L 100.0 77.6 % 50-150 Acrolein 8260B 03/17/22:204013VRG CCV ug/L 100.0 208 % 50-150 360 Acrylonitrile 8260B 03/17/22:204013VRG CCV ug/L 100.0 256 % 50-150 360 Benzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 112 % 70-130 Bromobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 104 % 70-130 Bromochloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 100 % 70-130 Bromodichloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 93.6 % 70-130 Bromoform 8260B 03/17/22:204013VRG CCV ug/L 25.00 71.8 % 70-130 Bromomethane (Methyl Bromide) 8260B 03/17/22:204013VRG CCV ug/L 25.00 73.8 % 70-130 Carbon Disulfide 8260B 03/17/22:204013VRG CCV ug/L 100.0 75.5 % 50-150 Carbon Tetrachloride 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 Chlorobenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.6 % 70-130 Chloroethane (Ethyl Chloride) 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.6 % 70-130 Chloroform 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.2 % 80-120 Chloromethane(Methyl Chloride) 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.9 % 70-130 cis-1,2-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 109 % 70-130 cis-1,3-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 70-130 Dibromochloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 87.3 % 70-130 Dibromofluromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 97.5 % 70-130 Dibromomethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.7 % 70-130 Dichlorodifluoromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 81.0 % 70-130 Dichloromethane 8260B 03/17/22:204013VRG CCV ug/L 25.00 104 % 70-130 Ethyl tert-Butyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 50-150 Ethylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 113 % 80-120 Hexachlorobutadiene 8260B 03/17/22:204013VRG CCV ug/L 25.00 115 % 70-130 Isopropyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 118 % 50-150 Isopropylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.4 % 70-130 Page 26 of 27 April 6, 2022 Lab ID : CC 2280921 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 03/17/22:204013VRG CCV ug/L 25.00 107 % 70-130 n-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 106 % 70-130 n-Propylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 101 % 70-130 p-Isopropyltoluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.3 % 70-130 sec-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 98.0 % 70-130 Styrene 8260B 03/17/22:204013VRG CCV ug/L 25.00 108 % 70-130 TAME 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 50-150 tert-Butanol 8260B 03/17/22:204013VRG CCV ug/L 125.0 97.9 % 50-150 tert-Butylbenzene 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.1 % 70-130 Tetrachloroethylene (PCE) 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.3 % 70-130 Toluene 8260B 03/17/22:204013VRG CCV ug/L 25.00 95.8 % 80-120 Toluene-d8 8260B 03/17/22:204013VRG CCV ug/L 25.00 99.9 % 70-130 trans-1,2-Dichloroethylene 8260B 03/17/22:204013VRG CCV ug/L 25.00 111 % 70-130 trans-1,3-Dichloropropene 8260B 03/17/22:204013VRG CCV ug/L 25.00 108 % 70-130 Trichloroethylene (TCE) 8260B 03/17/22:204013VRG CCV ug/L 25.00 103 % 70-130 Trichlorofluoromethane F-11 8260B 03/17/22:204013VRG CCV ug/L 25.00 76.8 % 70-130 Vinyl Acetate 8260B 03/17/22:204013VRG CCV ug/L 100.0 125 % 50-150 Vinyl Chloride 8260B 03/17/22:204013VRG CCV ug/L 25.00 89.7 % 80-120 Xylene m,p 8260B 03/17/22:204013VRG CCV ug/L 50.00 105 % 70-130 Xylenes o 8260B 03/17/22:204013VRG CCV ug/L 25.00 102 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Page 27 of 27 April 13, 2022 Water Systems Consulting, Inc. Lab ID : CC 2281094 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 12 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (6 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-33-18 Depth 03/29/2022 03/29/2022 CC 2281094-001 GW B-33- 42 Depth 03/29/2022 03/29/2022 CC 2281094-002 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 04/05/2022:203701 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Benzene: 310 LCS above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. The following note applies to Toluene-d8: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 04/05/2022:204992 All analysis quality controls are within established criteria, except: The following note applies to 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, 2-Hexanone, Acrylonitrile, Dibromomethane, Hexachlorobutadiene, 2-Butano: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 12 April 13, 2022 Lab ID : CC 2281094 Water Systems Consulting, Inc. Customer : 8-1286 Discussion of Analytical Results: - Case Narrative - 04/13/22 - Due to the sample matrix for sample ID, B-33- 18 Depth, the preservative did not bring the pH to 2 pH units as required by the method. Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 04.0 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-13 Page 2 of 12 April 13, 2022 Lab ID : CC 2281094-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 29, 2022-08:31 Sampled By : Alex S Received On : March 29, 2022-16:28 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-33-18 Depth Project : SLO PCE B-33 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 94.5 78-125 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromofluoromethane‡ 89.9 85-124 % 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane-d4‡ 102 84-126 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene-d8‡ 148 77-129 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Acetone ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrolein ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrylonitrile ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Benzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromochloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromodichloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromoform ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromomethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butanol ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Butanone (MEK) ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 sec-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Disulfide ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Tetrachloride ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroethane ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroform ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chlorotoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Chlorotoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromochloromethane ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromomethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 12 April 13, 2022 Lab ID : CC 2281094-001 Description : B-33-18 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl Benzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Hexachlorobutadiene ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Hexanone ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Isopropylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methylene Chloride ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Propylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Styrene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Tetrachloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichlorofluoromethane ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Acetate ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Chloride ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes m,p ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Page 4 of 12 April 13, 2022 Lab ID : CC 2281094-001 Description : B-33-18 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chloroethylvinylether ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 12 April 13, 2022 Lab ID : CC 2281094-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : March 29, 2022-11:53 Sampled By : Alex S Received On : March 29, 2022-16:28 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-33- 42 Depth Project : SLO PCE B-33 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 92.0 78-125 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromofluoromethane‡ 94.0 85-124 % 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane-d4‡ 92.8 84-126 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene-d8‡ 143 77-129 % 5030B 04/05/22:203701 8260B 04/05/22:204992 Acetone ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrolein ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Acrylonitrile ND 50 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Benzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromochloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromodichloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromoform ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Bromomethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butanol ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Butanone (MEK) ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 sec-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Butylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Disulfide ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Carbon Tetrachloride ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroethane ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloroform ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Chloromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chlorotoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Chlorotoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromochloromethane ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dibromomethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 12 April 13, 2022 Lab ID : CC 2281094-002 Description : B-33- 42 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl Benzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Hexachlorobutadiene ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Hexanone ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Isopropylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Methylene Chloride ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 n-Propylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Styrene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Tetrachloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Toluene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichloroethylene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Trichlorofluoromethane ND 1 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Acetate ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Vinyl Chloride ND 0.5 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes ND -- ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Xylenes m,p ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 Page 7 of 12 April 13, 2022 Lab ID : CC 2281094-002 Description : B-33- 42 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 2-Chloroethylvinylether ND 10 ug/L 5030B 04/05/22:203701 8260B 04/05/22:204992 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 12 This Page is to be Stamped April 13, 2022 Lab ID : CC 2281094 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 111 % 52-137 MS ug/L 25.00 82.3 % 25-179 (CC 2281040-002) MSD ug/L 25.00 87.3 % 25-179 MSRPD ug/L 0.000 5.9% ≤26 1,1-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 04/05/22:203701VRG Blank ug/L 25.00 94.8 % 84-126 LCS ug/L 25.00 109 % 84-126 MS ug/L 25.00 98.9 % 84-126 (CC 2281040-002) MSD ug/L 25.00 94.8 % 84-126 MSRPD ug/L 0.000 4.2% ≤20.0 1,2-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 04/05/22:203701VRG Blank ug/L ND <10 2-Chloroethylvinyl ether 5030B 04/05/22:203701VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 2-Hexanone 5030B 04/05/22:203701VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 04/05/22:203701VRG Blank ug/L 25.00 97.8 % 78-125 LCS ug/L 25.00 90.7 % 78-125 MS ug/L 25.00 99.4 % 0-200 (CC 2281040-002) MSD ug/L 25.00 101 % 0-200 MSRPD ug/L 0.000 2.1% ≤20.0 4-Chlorotoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 04/05/22:203701VRG Blank ug/L ND <10 Acetone 5030B 04/05/22:203701VRG Blank ug/L ND <50 Acrolein 5030B 04/05/22:203701VRG Blank ug/L ND <50 Acrylonitrile 5030B 04/05/22:203701VRG Blank ug/L ND <50 Benzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 147 % 60-134 330 MS ug/L 25.00 105 % 47-169 (CC 2281040-002) MSD ug/L 25.00 100 % 47-169 MSRPD ug/L 0.000 4.6% ≤24 Bromobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Bromoform 5030B 04/05/22:203701VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 04/05/22:203701VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chlorobenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 121 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 12 April 13, 2022 Lab ID : CC 2281094 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 102 % 31-212 (CC 2281040-002) MSD ug/L 25.00 102 % 31-212 MSRPD ug/L 0.000 0.1% ≤27 Chloroethane (Ethyl Chloride) 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chloroform 5030B 04/05/22:203701VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <2 Dibromofluromethane 5030B 04/05/22:203701VRG Blank ug/L 25.00 90.7 % 85-124 LCS ug/L 25.00 99.2 % 85-124 MS ug/L 25.00 93.5 % 85-124 (CC 2281040-002) MSD ug/L 25.00 92.1 % 85-124 MSRPD ug/L 0.000 1.5% ≤20.0 Dibromomethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Dichloromethane 5030B 04/05/22:203701VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 04/05/22:203701VRG Blank ug/L ND <2 Ethylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Freon-11 5030B 04/05/22:203701VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 04/05/22:203701VRG Blank ug/L ND <5 Isopropyl Ether 5030B 04/05/22:203701VRG Blank ug/L ND <5 Isopropylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 04/05/22:203701VRG Blank ug/L ND <2 n-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Styrene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 TAME 5030B 04/05/22:203701VRG Blank ug/L ND <5 tert-Butanol 5030B 04/05/22:203701VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Toluene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 94.6 % 56-131 MS ug/L 25.00 127 % 44-164 (CC 2281040-002) MSD ug/L 25.00 124 % 44-164 MSRPD ug/L 0.000 2.4% ≤30 Toluene-d8 5030B 04/05/22:203701VRG Blank ug/L 25.00 142 % 77-129 LCS ug/L 25.00 94.3 % 77-129 MS ug/L 25.00 139 % 77-129 435 (CC 2281040-002) MSD ug/L 25.00 140 % 77-129 435 MSRPD ug/L 0.000 0.9% ≤20 trans-1,2-Dichloroethylene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 LCS ug/L 25.00 104 % 61-123 MS ug/L 25.00 98.3 % 41-167 (CC 2281040-002) MSD ug/L 25.00 92.0 % 41-167 MSRPD ug/L 0.000 6.6% ≤32 Vinyl Acetate 5030B 04/05/22:203701VRG Blank ug/L ND <10 Vinyl Chloride 5030B 04/05/22:203701VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 04/05/22:203701VRG Blank ug/L ND <2 Xylenes o 5030B 04/05/22:203701VRG Blank ug/L ND <2 Page 10 of 12 April 13, 2022 Lab ID : CC 2281094 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 106 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.2 % 70-130 1,1,2,2-Tetrachloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 1,1,2-Trichloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 106 % 70-130 1,1-Dichloroethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.1 % 70-130 1,1-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 91.2 % 80-120 1,1-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 97.7 % 70-130 1,2,3-Trichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 665 % 70-130 360 1,2,4-Trichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 264 % 70-130 360 1,2,4-Trimethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.6 % 70-130 1,2-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 108 % 70-130 1,2-Dichloroethane (EDC) 8260B 04/05/22:204992VRG CCV ug/L 25.00 123 % 70-130 1,2-Dichloroethane-d4 8260B 04/05/22:204992VRG CCV ug/L 25.00 125 % 70-130 1,2-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 113 % 80-120 1,3,5-Trimethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 95.8 % 70-130 1,3-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 94.7 % 70-130 1,3-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 120 % 70-130 1,4-Dichlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 2,2-Dichloropropane 8260B 04/05/22:204992VRG CCV ug/L 25.00 114 % 70-130 2-Butanone (MEK) 8260B 04/05/22:204992VRG CCV ug/L 100.0 155 % 50-150 360 2-Chloroethylvinyl ether 8260B 04/05/22:204992VRG CCV ug/L 100.0 136 % 50-150 2-Chlorotoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 110 % 70-130 2-Hexanone 8260B 04/05/22:204992VRG CCV ug/L 100.0 154 % 50-150 360 4-Bromofluorobenzene (BFB) 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.4 % 70-130 4-Chlorotoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 99.8 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 04/05/22:204992VRG CCV ug/L 100.0 133 % 50-150 Acetone 8260B 04/05/22:204992VRG CCV ug/L 100.0 76.6 % 50-150 Acrolein 8260B 04/05/22:204992VRG CCV ug/L 100.0 129 % 50-150 Acrylonitrile 8260B 04/05/22:204992VRG CCV ug/L 100.0 171 % 50-150 360 Benzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 70-130 Bromobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Bromochloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.7 % 70-130 Bromodichloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Bromoform 8260B 04/05/22:204992VRG CCV ug/L 25.00 103 % 70-130 Bromomethane (Methyl Bromide) 8260B 04/05/22:204992VRG CCV ug/L 25.00 81.0 % 70-130 Carbon Disulfide 8260B 04/05/22:204992VRG CCV ug/L 100.0 62.3 % 50-150 Carbon Tetrachloride 8260B 04/05/22:204992VRG CCV ug/L 25.00 105 % 70-130 Chlorobenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.6 % 70-130 Chloroethane (Ethyl Chloride) 8260B 04/05/22:204992VRG CCV ug/L 25.00 100 % 70-130 Chloroform 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.6 % 80-120 Chloromethane(Methyl Chloride) 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.8 % 70-130 cis-1,2-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.3 % 70-130 cis-1,3-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 110 % 70-130 Dibromochloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 111 % 70-130 Dibromofluromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.2 % 70-130 Dibromomethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 146 % 70-130 360 Dichlorodifluoromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 102 % 70-130 Dichloromethane 8260B 04/05/22:204992VRG CCV ug/L 25.00 97.9 % 70-130 Ethyl tert-Butyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 50-150 Ethylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 102 % 80-120 Hexachlorobutadiene 8260B 04/05/22:204992VRG CCV ug/L 25.00 174 % 70-130 360 Isopropyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 124 % 50-150 Isopropylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 88.7 % 70-130 Page 11 of 12 April 13, 2022 Lab ID : CC 2281094 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 04/05/22:204992VRG CCV ug/L 25.00 115 % 70-130 n-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 93.1 % 70-130 n-Propylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 87.7 % 70-130 p-Isopropyltoluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 90.9 % 70-130 sec-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 86.1 % 70-130 Styrene 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 TAME 8260B 04/05/22:204992VRG CCV ug/L 25.00 129 % 50-150 tert-Butanol 8260B 04/05/22:204992VRG CCV ug/L 125.0 109 % 50-150 tert-Butylbenzene 8260B 04/05/22:204992VRG CCV ug/L 25.00 88.5 % 70-130 Tetrachloroethylene (PCE) 8260B 04/05/22:204992VRG CCV ug/L 25.00 98.4 % 70-130 Toluene 8260B 04/05/22:204992VRG CCV ug/L 25.00 95.4 % 80-120 Toluene-d8 8260B 04/05/22:204992VRG CCV ug/L 25.00 104 % 70-130 trans-1,2-Dichloroethylene 8260B 04/05/22:204992VRG CCV ug/L 25.00 96.2 % 70-130 trans-1,3-Dichloropropene 8260B 04/05/22:204992VRG CCV ug/L 25.00 117 % 70-130 Trichloroethylene (TCE) 8260B 04/05/22:204992VRG CCV ug/L 25.00 107 % 70-130 Trichlorofluoromethane F-11 8260B 04/05/22:204992VRG CCV ug/L 25.00 71.0 % 70-130 Vinyl Acetate 8260B 04/05/22:204992VRG CCV ug/L 100.0 113 % 50-150 Vinyl Chloride 8260B 04/05/22:204992VRG CCV ug/L 25.00 87.8 % 80-120 Xylene m,p 8260B 04/05/22:204992VRG CCV ug/L 50.00 98.2 % 70-130 Xylenes o 8260B 04/05/22:204992VRG CCV ug/L 25.00 101 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 330 : The LCS was out of acceptance limits. Results may be biased high. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 12 of 12 April 21, 2022 Water Systems Consulting, Inc. Lab ID : CC 2281120 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Customer : 8-1286 Laboratory Report This Page is to be Stamped Introduction: This report package contains total of 15 pages divided into 3 sections: Case Narrative (2 pages) : An overview of the work performed at FGL. Sample Results (9 pages) : Results for each sample submitted. Quality Control (4 pages) : Supporting Quality Control (QC) results. Case Narrative This Case Narrative pertains to the following samples: Sample Description Date Sampled Date Received FGL Lab ID # Matrix B-34-24 Depth 04/01/2022 04/01/2022 CC 2281120-001 GW B-34-34 Depth 04/01/2022 04/01/2022 CC 2281120-002 GW B-34-51 Depth 04/01/2022 04/01/2022 CC 2281120-003 GW Sampling and Receipt Information: All samples were received in acceptable condition and within temperature requirements, unless noted on the Condition Upon Receipt (CUR) form. All samples arrived on ice. All samples were prepared and analyzed within the method specified hold time. All samples were checked for pH if acid or base preservation is required (except for VOAs). For details of sample receipt information, please see the attached Chain of Custody and Condition Upon Receipt Form. Quality Control: All samples were prepared and analyzed according to the following tables: Organic QC 5030B 04/07/2022:203946 All preparation quality controls are within established criteria (performed at FGL-SP ELAP# 1573), except: The following note applies to Toluene-d8: 310 LCS above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. The following note applies to Toluene-d8: 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. 8260B 04/07/2022:205099 All analysis quality controls are within established criteria, except: The following note applies to Trichlorofluoromethane F-11, Hexachlorobutadiene, 4-Methyl-2-pentanone (MIBK), trans-1,3-Dichloropropene: 360 CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. The following note applies to Toluene-d8: 362 Surrogates are qualified on Control Chart Limits, these are CCV limits. See individual sample reports. The following note applies to Trichlorofluoromethane F-11: 380 CCV met CCC and SPCC criteria, Results were reported. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 1 of 15 April 21, 2022 Lab ID : CC 2281120 Water Systems Consulting, Inc. Customer : 8-1286 Certification:: I certify that this data package is in compliance with ELAP standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:GMADigitial Signature Stamp Y = 03.1 Approved By Kelly A. Dunnahoo, B.S. Digitally signed by Kelly A. Dunnahoo, B.S. Title: Laboratory Director Date: 2022-04-21 Page 2 of 15 April 21, 2022 Lab ID : CC 2281120-001 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : April 1, 2022-11:36 Sampled By : Dan O Received On : April 1, 2022-14:01 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-34-24 Depth Project : SLO PCE B-34 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 95.5 78-125* % 5030B 04/07/22:203946 8260B 04/07/22:205099 Dibromofluoromethane‡ 86.3 85-124* % 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichloroethane-d4‡ 97.5 84-126* % 5030B 04/07/22:203946 8260B 04/07/22:205099 Toluene-d8‡ 168 77-129* % 5030B 04/07/22:203946 8260B 04/07/22:205099 Acetone ND 100* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Acrolein ND 100* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Acrylonitrile ND 100* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Benzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromobenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromochloromethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromodichloromethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromoform ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromomethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 tert-Butanol ND 10* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Butanone (MEK) ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 n-Butylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 sec-Butylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 tert-Butylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Carbon Disulfide ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Carbon Tetrachloride ND 2* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chlorobenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chloroethane ND 2* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chloroform ND 2* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chloromethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Chlorotoluene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 4-Chlorotoluene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Dibromochloromethane ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Dibromomethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Dichlorodifluoromethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1-Dichloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1-Dichloroethylene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 3 of 15 April 21, 2022 Lab ID : CC 2281120-001 Description : B-34-24 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichloropropane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3-Dichloropropane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2,2-Dichloropropane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1-Dichloropropene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Ethyl Benzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Hexachlorobutadiene ND 10* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Hexanone ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Isopropylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 p-Isopropyltoluene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Methylene Chloride ND 10* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 n-Propylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Styrene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Tetrachloroethylene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Toluene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Trichloroethylene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Trichlorofluoromethane ND 2* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Vinyl Acetate ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Vinyl Chloride ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Xylenes ND -- ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Xylenes m,p ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Page 4 of 15 April 21, 2022 Lab ID : CC 2281120-001 Description : B-34-24 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Chloroethylvinylether ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 5 of 15 April 21, 2022 Lab ID : CC 2281120-002 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : April 1, 2022-12:05 Sampled By : Dan O Received On : April 1, 2022-14:01 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-34-34 Depth Project : SLO PCE B-34 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 95.6 78-125 % 5030B 04/07/22:203946 8260B 04/07/22:205099 Dibromofluoromethane‡ 87.4 85-124 % 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichloroethane-d4‡ 96.9 84-126 % 5030B 04/07/22:203946 8260B 04/07/22:205099 Toluene-d8‡ 161 77-129 % 5030B 04/07/22:203946 8260B 04/07/22:205099 Acetone ND 50 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Acrolein ND 50 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Acrylonitrile ND 50 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Benzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromobenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromochloromethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromodichloromethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromoform ND 2 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromomethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 tert-Butanol ND 5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Butanone (MEK) ND 10 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 n-Butylbenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 sec-Butylbenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 tert-Butylbenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Carbon Disulfide ND 10 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Carbon Tetrachloride ND 1 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chlorobenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chloroethane ND 1 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chloroform ND 1 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chloromethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Chlorotoluene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 4-Chlorotoluene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Dibromochloromethane ND 2 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Dibromomethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichlorobenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3-Dichlorobenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,4-Dichlorobenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Dichlorodifluoromethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1-Dichloroethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichloroethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1-Dichloroethylene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 6 of 15 April 21, 2022 Lab ID : CC 2281120-002 Description : B-34-34 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 trans-1,2-Dichloroethylene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichloropropane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3-Dichloropropane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2,2-Dichloropropane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1-Dichloropropene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 cis-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 trans-1,3-Dichloropropene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Di-isopropyl ether (DIPE) ND 5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Ethyl Benzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Ethyl tert-butyl ether (ETBE) ND 2 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Hexachlorobutadiene ND 5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Hexanone ND 10 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Isopropylbenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 p-Isopropyltoluene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Methyl tert-butyl ether (MTBE) ND 2 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 4-Methyl-2-pentanone (MIBK) ND 10 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Methylene Chloride ND 5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 n-Propylbenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Styrene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 tert-Amyl methyl ether (TAME) ND 5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,1,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,2,2-Tetrachloroethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Tetrachloroethylene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Toluene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2,3-Trichlorobenzene ND 10 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2,4-Trichlorobenzene ND 10 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,1-Trichloroethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,2-Trichloroethane ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Trichloroethylene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Trichlorofluoromethane ND 1 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2,4-Trimethylbenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3,5-Trimethylbenzene ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Vinyl Acetate ND 10 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Vinyl Chloride ND 0.5 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Xylenes ND -- ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Xylenes m,p ND 2 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Page 7 of 15 April 21, 2022 Lab ID : CC 2281120-002 Description : B-34-34 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 2 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Chloroethylvinylether ND 10 ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 8 of 15 April 21, 2022 Lab ID : CC 2281120-003 Customer ID : 8-1286 Water Systems Consulting, Inc. Sampled On : April 1, 2022-12:43 Sampled By : Dan O Received On : April 1, 2022-14:01 Attn: Casey Springer 805 Aerovista Place, Suite 201 San Luis Obispo, CA 93401 Matrix : Ground Water Description : B-34-51 Depth Project : SLO PCE B-34 This Page is to be Stamped Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 4-Bromofluorobenzene‡ 96.8 78-125* % 5030B 04/07/22:203946 8260B 04/07/22:205099 Dibromofluoromethane‡ 91.3 85-124* % 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichloroethane-d4‡ 98.2 84-126* % 5030B 04/07/22:203946 8260B 04/07/22:205099 Toluene-d8‡ 148 77-129* % 5030B 04/07/22:203946 8260B 04/07/22:205099 Acetone ND 100* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Acrolein ND 100* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Acrylonitrile ND 100* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Benzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromobenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromochloromethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromodichloromethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromoform ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Bromomethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 tert-Butanol ND 10* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Butanone (MEK) ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 n-Butylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 sec-Butylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 tert-Butylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Carbon Disulfide ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Carbon Tetrachloride ND 2* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chlorobenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chloroethane ND 2* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chloroform ND 2* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Chloromethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Chlorotoluene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 4-Chlorotoluene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Dibromochloromethane ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Dibromomethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichlorobenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3-Dichlorobenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,4-Dichlorobenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Dichlorodifluoromethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1-Dichloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1-Dichloroethylene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 9 of 15 April 21, 2022 Lab ID : CC 2281120-003 Description : B-34-51 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 cis-1,2-Dichloroethylene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 trans-1,2-Dichloroethylene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2-Dichloropropane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3-Dichloropropane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2,2-Dichloropropane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1-Dichloropropene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3-Dichloropropene (Total) ND -- ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 cis-1,3-Dichloropropene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 trans-1,3-Dichloropropene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Di-isopropyl ether (DIPE) ND 10* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Ethyl Benzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Ethyl tert-butyl ether (ETBE) ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Hexachlorobutadiene ND 10* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Hexanone ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Isopropylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 p-Isopropyltoluene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Methyl tert-butyl ether (MTBE) ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 4-Methyl-2-pentanone (MIBK) ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Methylene Chloride ND 10* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 n-Propylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Styrene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 tert-Amyl methyl ether (TAME) ND 10* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,1,2-Tetrachloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,2,2-Tetrachloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Tetrachloroethylene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Toluene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2,3-Trichlorobenzene ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2,4-Trichlorobenzene ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,1-Trichloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,1,2-Trichloroethane ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Trichloroethylene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Trichlorofluoromethane ND 2* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,2,4-Trimethylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 1,3,5-Trimethylbenzene ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Vinyl Acetate ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Vinyl Chloride ND 1* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Xylenes ND -- ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Xylenes m,p ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 Page 10 of 15 April 21, 2022 Lab ID : CC 2281120-003 Description : B-34-51 Depth Customer ID : 8-1286 Sample Result - Organic Sample Preparation Sample Analysis Constituent Result PQL Units Note Method Date/ID Method Date/ID EPA 8260 Xylenes o ND 4* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 2-Chloroethylvinylether ND 20* ug/L 5030B 04/07/22:203946 8260B 04/07/22:205099 ND=Non-Detected. PQL=Practical Quantitation Limit. ‡Surrogate. * PQL adjusted for dilution. Page 11 of 15 This Page is to be Stamped April 21, 2022 Lab ID : CC 2281120 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,1,1-Trichloroethane(TCA) 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,1,2,2-Tetrachloroethane 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,1,2-Trichloroethane 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,1-Dichloroethane 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,1-Dichloroethylene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 LCS ug/L 25.00 81.0 % 52-137 MS ug/L 25.00 72.5 % 25-179 (CC 2281120-002) MSD ug/L 25.00 81.6 % 25-179 MSRPD ug/L 25.00 11.8% ≤26 1,1-Dichloropropene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,2,3-Trichlorobenzene 5030B 04/07/22:203946VRG Blank ug/L ND <10 1,2,4-Trichlorobenzene 5030B 04/07/22:203946VRG Blank ug/L ND <10 1,2,4-Trimethylbenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,2-Dichlorobenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,2-Dichloroethane (EDC) 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,2-Dichloroethane-d4 5030B 04/07/22:203946VRG Blank ug/L 25.00 93.3 % 84-126 LCS ug/L 25.00 96.3 % 84-126 MS ug/L 25.00 98.8 % 84-126 (CC 2281120-002) MSD ug/L 25.00 98.5 % 84-126 MSRPD ug/L 25.00 0.2% ≤20.0 1,2-Dichloropropane 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,3,5-Trimethylbenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,3-Dichlorobenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,3-Dichloropropane 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 1,4-Dichlorobenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 2,2-Dichloropropane 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 2-Butanone (MEK) 5030B 04/07/22:203946VRG Blank ug/L 4.9 10 2-Chloroethylvinyl ether 5030B 04/07/22:203946VRG Blank ug/L ND <10 2-Chlorotoluene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 2-Hexanone 5030B 04/07/22:203946VRG Blank ug/L ND <10 4-Bromofluorobenzene 5030B 04/07/22:203946VRG Blank ug/L 25.00 90.2 % 78-125 LCS ug/L 25.00 95.3 % 78-125 MS ug/L 25.00 89.1 % 0-200 (CC 2281120-002) MSD ug/L 25.00 97.5 % 0-200 MSRPD ug/L 25.00 9.0% ≤20.0 4-Chlorotoluene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 4-Methyl-2-pentanone (MIBK) 5030B 04/07/22:203946VRG Blank ug/L ND <10 Acetone 5030B 04/07/22:203946VRG Blank ug/L 6.8 50 Acrolein 5030B 04/07/22:203946VRG Blank ug/L ND <50 Acrylonitrile 5030B 04/07/22:203946VRG Blank ug/L ND <50 Benzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 LCS ug/L 25.00 115 % 60-134 MS ug/L 25.00 87.0 % 47-169 (CC 2281120-002) MSD ug/L 25.00 96.0 % 47-169 MSRPD ug/L 25.00 9.8% ≤24 Bromobenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Bromochloromethane 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Bromodichloromethane 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Bromoform 5030B 04/07/22:203946VRG Blank ug/L ND <2 Bromomethane (Methyl Bromide) 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Carbon Disulfide 5030B 04/07/22:203946VRG Blank ug/L ND <10 Carbon Tetrachloride 5030B 04/07/22:203946VRG Blank ug/L ND <1 Chlorobenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 LCS ug/L 25.00 109 % 56-152 Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists Page 12 of 15 April 21, 2022 Lab ID : CC 2281120 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Chlorobenzene 5030B MS ug/L 25.00 94.3 % 31-212 (CC 2281120-002) MSD ug/L 25.00 106 % 31-212 MSRPD ug/L 25.00 11.7% ≤27 Chloroethane (Ethyl Chloride) 5030B 04/07/22:203946VRG Blank ug/L ND <1 Chloroform 5030B 04/07/22:203946VRG Blank ug/L ND <1 Chloromethane(Methyl Chloride) 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 cis-1,2-Dichloroethylene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 cis-1,3-Dichloropropene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Dibromochloromethane 5030B 04/07/22:203946VRG Blank ug/L ND <2 Dibromofluromethane 5030B 04/07/22:203946VRG Blank ug/L 25.00 84.5 % 85-124 LCS ug/L 25.00 87.4 % 85-124 MS ug/L 25.00 89.6 % 85-124 (CC 2281120-002) MSD ug/L 25.00 90.9 % 85-124 MSRPD ug/L 25.00 1.3% ≤20.0 Dibromomethane 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Dichlorodifluoromethane 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Dichloromethane 5030B 04/07/22:203946VRG Blank ug/L ND <5 Ethyl tert-Butyl Ether 5030B 04/07/22:203946VRG Blank ug/L ND <2 Ethylbenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Freon-11 5030B 04/07/22:203946VRG Blank ug/L ND <1 Hexachlorobutadiene 5030B 04/07/22:203946VRG Blank ug/L ND <5 Isopropyl Ether 5030B 04/07/22:203946VRG Blank ug/L ND <5 Isopropylbenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Methyl tert-Butyl Ether (MTBE) 5030B 04/07/22:203946VRG Blank ug/L ND <2 n-Butylbenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 n-Propylbenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 p-Isopropyltoluene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 sec-Butylbenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Styrene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 TAME 5030B 04/07/22:203946VRG Blank ug/L ND <5 tert-Butanol 5030B 04/07/22:203946VRG Blank ug/L ND <5 tert-Butylbenzene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Tetrachloroethylene (PCE) 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Toluene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 LCS ug/L 25.00 151 % 56-131 330 MS ug/L 25.00 124 % 44-164 (CC 2281120-002) MSD ug/L 25.00 140 % 44-164 MSRPD ug/L 25.00 12.4% ≤30 Toluene-d8 5030B 04/07/22:203946VRG Blank ug/L 25.00 162 % 77-129 LCS ug/L 25.00 150 % 77-129 330 MS ug/L 25.00 149 % 77-129 435 (CC 2281120-002) MSD ug/L 25.00 155 % 77-129 435 MSRPD ug/L 25.00 3.6% ≤20 trans-1,2-Dichloroethylene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 trans-1,3-Dichloropropene 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Trichloroethylene (TCE) 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 LCS ug/L 25.00 101 % 61-123 MS ug/L 25.00 84.3 % 41-167 (CC 2281120-002) MSD ug/L 25.00 94.1 % 41-167 MSRPD ug/L 25.00 11.0% ≤32 Vinyl Acetate 5030B 04/07/22:203946VRG Blank ug/L ND <10 Vinyl Chloride 5030B 04/07/22:203946VRG Blank ug/L ND <0.5 Xylenes m,p 5030B 04/07/22:203946VRG Blank ug/L ND <2 Xylenes o 5030B 04/07/22:203946VRG Blank ug/L ND <2 Page 13 of 15 April 21, 2022 Lab ID : CC 2281120 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic 1,1,1,2-Tetrachloroethane 8260B 04/07/22:205099VRG CCV ug/L 25.00 82.6 % 70-130 1,1,1-Trichloroethane(TCA) 8260B 04/07/22:205099VRG CCV ug/L 25.00 86.2 % 70-130 1,1,2,2-Tetrachloroethane 8260B 04/07/22:205099VRG CCV ug/L 25.00 96.0 % 70-130 1,1,2-Trichloroethane 8260B 04/07/22:205099VRG CCV ug/L 25.00 126 % 70-130 1,1-Dichloroethane 8260B 04/07/22:205099VRG CCV ug/L 25.00 88.2 % 70-130 1,1-Dichloroethylene 8260B 04/07/22:205099VRG CCV ug/L 25.00 83.2 % 80-120 1,1-Dichloropropene 8260B 04/07/22:205099VRG CCV ug/L 25.00 85.6 % 70-130 1,2,3-Trichlorobenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 788 % 70-130 360 1,2,4-Trichlorobenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 268 % 70-130 360 1,2,4-Trimethylbenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 89.5 % 70-130 1,2-Dichlorobenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 93.3 % 70-130 1,2-Dichloroethane (EDC) 8260B 04/07/22:205099VRG CCV ug/L 25.00 87.7 % 70-130 1,2-Dichloroethane-d4 8260B 04/07/22:205099VRG CCV ug/L 25.00 93.8 % 70-130 1,2-Dichloropropane 8260B 04/07/22:205099VRG CCV ug/L 25.00 98.5 % 80-120 1,3,5-Trimethylbenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 89.0 % 70-130 1,3-Dichlorobenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 83.5 % 70-130 1,3-Dichloropropane 8260B 04/07/22:205099VRG CCV ug/L 25.00 96.1 % 70-130 1,4-Dichlorobenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 89.2 % 70-130 2,2-Dichloropropane 8260B 04/07/22:205099VRG CCV ug/L 25.00 102 % 70-130 2-Butanone (MEK) 8260B 04/07/22:205099VRG CCV ug/L 100.0 121 % 50-150 2-Chloroethylvinyl ether 8260B 04/07/22:205099VRG CCV ug/L 100.0 238 % 50-150 360 2-Chlorotoluene 8260B 04/07/22:205099VRG CCV ug/L 25.00 104 % 70-130 2-Hexanone 8260B 04/07/22:205099VRG CCV ug/L 100.0 193 % 50-150 360 4-Bromofluorobenzene (BFB) 8260B 04/07/22:205099VRG CCV ug/L 25.00 98.1 % 70-130 4-Chlorotoluene 8260B 04/07/22:205099VRG CCV ug/L 25.00 92.4 % 70-130 4-Methyl-2-pentanone (MIBK) 8260B 04/07/22:205099VRG CCV ug/L 100.0 254 % 50-150 360 Acetone 8260B 04/07/22:205099VRG CCV ug/L 100.0 80.8 % 50-150 Acrolein 8260B 04/07/22:205099VRG CCV ug/L 100.0 107 % 50-150 Acrylonitrile 8260B 04/07/22:205099VRG CCV ug/L 100.0 197 % 50-150 360 Benzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 95.5 % 70-130 Bromobenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 94.2 % 70-130 Bromochloromethane 8260B 04/07/22:205099VRG CCV ug/L 25.00 76.9 % 70-130 Bromodichloromethane 8260B 04/07/22:205099VRG CCV ug/L 25.00 120 % 70-130 Bromoform 8260B 04/07/22:205099VRG CCV ug/L 25.00 78.6 % 70-130 Bromomethane (Methyl Bromide) 8260B 04/07/22:205099VRG CCV ug/L 25.00 70.1 % 70-130 Carbon Disulfide 8260B 04/07/22:205099VRG CCV ug/L 100.0 60.2 % 50-150 Carbon Tetrachloride 8260B 04/07/22:205099VRG CCV ug/L 25.00 87.6 % 70-130 Chlorobenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 80.2 % 70-130 Chloroethane (Ethyl Chloride) 8260B 04/07/22:205099VRG CCV ug/L 25.00 91.6 % 70-130 Chloroform 8260B 04/07/22:205099VRG CCV ug/L 25.00 81.6 % 80-120 Chloromethane(Methyl Chloride) 8260B 04/07/22:205099VRG CCV ug/L 25.00 95.7 % 70-130 cis-1,2-Dichloroethylene 8260B 04/07/22:205099VRG CCV ug/L 25.00 89.8 % 70-130 cis-1,3-Dichloropropene 8260B 04/07/22:205099VRG CCV ug/L 25.00 137 % 70-130 360 Dibromochloromethane 8260B 04/07/22:205099VRG CCV ug/L 25.00 79.3 % 70-130 Dibromofluromethane 8260B 04/07/22:205099VRG CCV ug/L 25.00 90.5 % 70-130 Dibromomethane 8260B 04/07/22:205099VRG CCV ug/L 25.00 123 % 70-130 Dichlorodifluoromethane 8260B 04/07/22:205099VRG CCV ug/L 25.00 83.4 % 70-130 Dichloromethane 8260B 04/07/22:205099VRG CCV ug/L 25.00 84.4 % 70-130 Ethyl tert-Butyl Ether 8260B 04/07/22:205099VRG CCV ug/L 25.00 103 % 50-150 Ethylbenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 86.2 % 80-120 Hexachlorobutadiene 8260B 04/07/22:205099VRG CCV ug/L 25.00 187 % 70-130 360 Isopropyl Ether 8260B 04/07/22:205099VRG CCV ug/L 25.00 108 % 50-150 Isopropylbenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 87.0 % 70-130 Page 14 of 15 April 21, 2022 Lab ID : CC 2281120 Water Systems Consulting, Inc. Customer : 8-1286 Quality Control - Organic Constituent Method Date/ID Type Units Conc. QC Data DQO Note Organic Methyl tert-Butyl Ether 8260B 04/07/22:205099VRG CCV ug/L 25.00 101 % 70-130 n-Butylbenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 88.6 % 70-130 n-Propylbenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 85.1 % 70-130 p-Isopropyltoluene 8260B 04/07/22:205099VRG CCV ug/L 25.00 84.1 % 70-130 sec-Butylbenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 82.1 % 70-130 Styrene 8260B 04/07/22:205099VRG CCV ug/L 25.00 84.0 % 70-130 TAME 8260B 04/07/22:205099VRG CCV ug/L 25.00 106 % 50-150 tert-Butanol 8260B 04/07/22:205099VRG CCV ug/L 125.0 97.7 % 50-150 tert-Butylbenzene 8260B 04/07/22:205099VRG CCV ug/L 25.00 82.6 % 70-130 Tetrachloroethylene (PCE) 8260B 04/07/22:205099VRG CCV ug/L 25.00 82.6 % 70-130 Toluene 8260B 04/07/22:205099VRG CCV ug/L 25.00 120 % 80-120 Toluene-d8 8260B 04/07/22:205099VRG CCV ug/L 25.00 154 % 70-130 362 trans-1,2-Dichloroethylene 8260B 04/07/22:205099VRG CCV ug/L 25.00 84.7 % 70-130 trans-1,3-Dichloropropene 8260B 04/07/22:205099VRG CCV ug/L 25.00 146 % 70-130 360 Trichloroethylene (TCE) 8260B 04/07/22:205099VRG CCV ug/L 25.00 81.5 % 70-130 Trichlorofluoromethane F-11 8260B 04/07/22:205099VRG CCV ug/L 25.00 63.1 % 70-130 380 Vinyl Acetate 8260B 04/07/22:205099VRG CCV ug/L 100.0 122 % 50-150 Vinyl Chloride 8260B 04/07/22:205099VRG CCV ug/L 25.00 80.8 % 80-120 Xylene m,p 8260B 04/07/22:205099VRG CCV ug/L 50.00 79.7 % 70-130 Xylenes o 8260B 04/07/22:205099VRG CCV ug/L 25.00 79.2 % 70-130 Definition CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix affects analyte recovery. MSRPD : MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and analysis. ND : Non-detect - Result was below the DQO listed for the analyte. DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. Explanation 330 : The LCS was out of acceptance limits. Results may be biased high. 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted. 362 : Surrogates are qualified on Control Chart Limits, these are CCV limits. See individual sample reports. 380 : CCV met CCC and SPCC criteria, Results were reported. 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Page 15 of 15 Gregg Drilling CPT Logs and Report Remedial Investigation Report City of San Luis Obispo | N Appendix N Gregg Drilling CPT Logs and Report N CONE PENETRATION TESTING (CPT) REPORT Gregg Drilling LLC Prepared by: Eleni Pateras epateras@greggdrilling.com Prepared for: City of San Luis Obispo D1225017 July 1, 2022 1 Table of Contents Cone Penetration Testing (CPT) Procedure .................................................................................................. 3 15cm2 Standard Cone Specifications ............................................................................................................ 4 Cone Penetration Test Data & Interpretation .............................................................................................. 5 Pore Pressure Dissipation Tests (PPDTs) ....................................................................................................... 7 Seismic Cone Penetration Tests (SCPT)......................................................................................................... 8 Soil Sampling ................................................................................................................................................. 9 Ground Water Sampling ............................................................................................................................. 10 References .................................................................................................................................................. 11 Table 1: Cone Penetration Testing Summary ............................................................................................. 12 APPENDIX A: Cone Penetration Test Plots APPENDIX B: Pore Pressure Dissipation Test Plots 2 July 1, 2022 City of San Luis Obispo Attn: Bobby Browning Subject: CPT Site Investigation Various Locations San Luis Obispo, CA GREGG Project Number: D1225017 Dear Bobby: The following report presents the results of Gregg Drilling’s Cone Penetration Test investigation for the above referenced site. The following testing services were performed: 1 Cone Penetration Tests (CPTU) 2 Pore Pressure Dissipation Tests (PPD) 3 Seismic Cone Penetration Tests (SCPTU) 4 Groundwater Samples (GWS) 5 Soil Samples (SS) 6 Vapor Samples (VS) A list of reference papers providing additional background on the specific tests conducted is provided in the bibliography following the text of the report. If you would like a copy of any of these publications or should you have any questions or comments regarding the contents of this report, please do not hesitate to contact me at 562-427-6899. Sincerely, CPT Reports Team Gregg Drilling, LLC. 3 Cone Penetration Testing (CPT) Procedure Gregg Drilling carries out all Cone Penetration Tests (CPT) using an integrated electronic cone system, Figure CPT. The cone takes measurements of tip resistance (qc), sleeve resistance (fs), and penetration pore water pressure (u2). Measurements are taken at either 2.5 or 5cm intervals during penetration to provide a nearly continuous profile. CPT data reduction and basic interpretation is performed in real time facilitating on- site decision making. The above mentioned parameters are stored electronically for further analysis and reference. All CPT soundings are performed in accordance with revised ASTM standards (D 5778-12). The 5mm thick porous plastic filter element is located directly behind the cone tip in the u2 location. A new saturated filter element is used on each sounding to measure both penetration pore pressures as well as measurements during a dissipation test (PPDT). Prior to each test, the filter element is fully saturated with oil under vacuum pressure to improve accuracy. When the sounding is completed, the test hole is backfilled according to client specifications. If grouting is used, the procedure generally consists of pushing a hollow tremie pipe with a “knock out” plug to the termination depth of the CPT hole. Grout is then pumped under pressure as the tremie pipe is pulled from the hole. Disruption or further contamination to the site is therefore minimized. Figure CPT 4 15cm2 Standard Cone Specifications Dimensions Cone base area 15 cm2 Sleeve surface area 225 cm2 Cone net area ratio 0.80 Specifications Cone load cell Full scale range 180 kN (20 tons) Overload capacity 150% Full scale tip stress 120 MPa (1,200 tsf) Repeatability 120 kPa (1.2 tsf) Sleeve load cell Full scale range 31 kN (3.5 tons) Overload capacity 150% Full scale sleeve stress 1,400 kPa (15 tsf) Repeatability 1.4 kPa (0.015 tsf) Pore pressure transducer Full scale range 7,000 kPa (1,000 psi) Overload capacity 150% Repeatability 7 kPa (1 psi) Note: The repeatability during field use will depend somewhat on ground conditions, abrasion, maintenance and zero load stability. 5 Cone Penetration Test Data & Interpretation The Cone Penetration Test (CPT) data collected are presented in graphical and electronic form in the report. The plots include interpreted Soil Behavior Type (SBT) based on the charts described by Robertson (1990). Typical plots display SBT based on the non-normalized charts of Robertson et al (1990) or normalized data (2010 and 2016). For CPT soundings deeper than 30m, we recommend the use of the normalized charts of Robertson (2010 and 2016) which can be displayed as SBTn (Figure SBTn). The report also includes spreadsheet output of computer calculations of basic interpretation in terms of SBT and SBTn and various geotechnical parameters using current published correlations based on the comprehensive review by Lunne, Robertson and Powell (1997), as well as recent updates by Professor Robertson (Guide to Cone Penetration Testing, 2015). The interpretations are presented only as a guide for geotechnical use and should be carefully reviewed. Gregg Drilling LLC does not warranty the correctness or the applicability of any of the geotechnical parameters interpreted by the software and does not assume any liability for use of the results in any design or review. The user should be fully aware of the techniques and limitations of any method used in the software. Some interpretation methods require input of the groundwater level to calculate vertical effective stress. An estimate of the in-situ groundwater level has been made based on field observations and/or CPT results but should be verified by the user. A summary of locations and depths is available in Table 1. Note that all penetration depths referenced in the data are with respect to the existing ground surface. Note that it is not always possible to clearly identify a soil type based solely on qt, fs, and u2. In these situations, experience, judgment, and an assessment of the pore pressure dissipation data should be used to infer the correct soil behavior type. 6 Figure SBT (After Robertson et al., 1990) – Note: Colors may vary slightly compared to plots Figure SBTn (After Robertson 2010) – Note: Colors may vary slightly compared to plots 7 Pore Pressure Dissipation Tests (PPDTs) Pore Pressure Dissipation Tests (PPDT’s) conducted at various intervals can be used to measure equilibrium water pressure (at the time of the CPT). If conditions are hydrostatic, the equilibrium water pressure can be used to determine the approximate depth of the ground water table. A PPDT is conducted when penetration is halted at specific intervals determined by the field representative. The variation of the penetration pore pressure (u) with time is measured behind the tip of the cone and recorded. Pore pressure dissipation data can be interpreted to provide estimates of: • Equilibrium piezometric pressure • Phreatic Surface • In situ horizontal coefficient of consolidation (ch) • In situ horizontal coefficient of permeability (kh) To correctly interpret the equilibrium piezometric pressure and/or the phreatic surface, the pore pressure must be monitored until it reaches equilibrium, Figure PPDT. This time is commonly referred to as t100, the point at which 100% of the excess pore pressure has dissipated. A complete reference on pore pressure dissipation tests is presented by Robertson et al. 1992 and Lunne et al. 1997. A summary of the pore pressure dissipation tests completed for this project is included in Table 1. Figure PPDT 8 Seismic Cone Penetration Tests (SCPT) Seismic Cone Penetration Testing (SCPT) can be conducted at various intervals during the Cone Penetration Test. Shear wave velocity (Vs) can then be calculated over a specified interval with depth. A small interval for seismic testing, such as 1-1.5m (3-5ft) allows for a detailed look at the shear wave profile with depth. Conversely, a larger interval such as 3-6m (10-20ft) allows for a more average shear wave velocity to be calculated. Gregg Drilling’s cones have a horizontally active geophone located 0.2m (0.66ft) behind the tip. To conduct the seismic shear wave test, the penetration of the cone is stopped and the rods are decoupled from the rig. An automatic hammer is triggered to send a shear wave into the soil. The distance from the source to the cone is calculated knowing the total depth of the cone and the horizontal offset distance between the source and the cone. To calculate an interval velocity, a minimum of two tests must be performed at two different depths. The arrival times between the two wave traces are compared to obtain the difference in time (∆t). The difference in depth is calculated (∆d) and velocity can be determined using the simple equation: v = ∆d/∆t Multiple wave traces can be recorded at the same depth to improve quality of the data. A complete reference on seismic cone penetration tests is presented by Robertson et al. 1986 and Lunne et al. 1997. A summary the shear wave velocities, arrival times and wave traces are provided with the report. (S) 1 2 t 1 2 1 2 12 12 Figure SCPT 9 Soil Sampling Gregg Drilling uses a piston-type push-in sampler to obtain small soil samples without generating any soil cuttings, Figure SS. Two different types of samplers (12 and 18 inch) are used depending on the soil type and density. The soil sampler is initially pushed in a "closed" position to the desired sampling interval using the CPT pushing equipment. Keeping the sampler closed minimizes the potential of cross contamination. The inner tip of the sampler is then retracted leaving a hollow soil sampler with inner 1¼” diameter sample tubes. The hollow sampler is then pushed in a locked "open" position to collect a soil sample. The filled sampler and push rods are then retrieved to the ground surface. Because the soil enters the sampler at a constant rate, the opportunity for 100% recovery is increased. For environmental analysis, the soil sample tube ends are sealed with Teflon and plastic caps. Often, a longer "split tube" can be used for geotechnical sampling. For a detailed reference on direct push soil sampling, refer to Robertson et al, 1998. Figure SS 10 Ground Water Sampling Gregg Drilling conducts groundwater sampling using a sampler as shown in Figure GWS. The groundwater sampler has a retrievable stainless steel or disposable PVC screen with steel drop off tip. This allows for samples to be taken at multiple depth intervals within the same sounding location. In areas of slower water recharge, provisions may be made to set temporary PVC well screens during sampling to allow the pushing equipment to advance to the next sample location while the groundwater is allowed to infiltrate. The groundwater sampler operates by advancing 44.5mm (1¾ inch) hollow push rods with the filter tip in a closed configuration to the base of the desired sampling interval. Once at the desired sample depth, the push rods are retracted; exposing the encased filter screen and allowing groundwater to infiltrate hydrostatically from the formation into the inlet screen. A small diameter bailer (approximately ½ or ¾ inch) is lowered through the push rods into the screen section for sample collection. The number of downhole trips with the bailer and time necessary to complete the sample collection at each depth interval is a function of sampling protocols, volume requirements, and the yield characteristics and storage capacity of the formation. Upon completion of sample collection, the push rods and sampler, with the exception of the PVC screen and steel drop off tip are retrieved to the ground surface, decontaminated and prepared for the next sampling event. For a detailed reference on direct push groundwater sampling, refer to Zemo et. al., 1992. Figure GWS 11 References Lunne, T., Robertson, P.K. and Powell, J.J.M., “Cone Penetration Testing in Geotechnical Practice” E & FN Spon. ISBN 0 419 23750, 1997 Roberston, P.K., “Soil Classification using the Cone Penetration Test”, Canadian Geotechnical Journal, Vol. 27, 1990 pp. 151-158. Robertson, P.K., 2009. Interpretation of Cone Penetration Tests – a unified approach. Canadian Geotechnical Journal, Volume 46: 1337-1355 Robertson, P.K., 2010, “Soil Behavior type from the CPT: an update”, 2nd International Symposium on Cone Penetration Testing, Huntington Beach, CA, Vol.2. pp 575-583 Robertson, P.K., 2016. “CPT-based Soil Behaviour Type (SBT) Classification System – an update”. Canadian Geotechnical Journal, 53(12); pp 1910-1927 Robertson, P.K. and Cabal, K.L., “Guide to Cone Penetration Testing for Geotechnical Engineering”, 6th Edition, 2015, 145 p. Free online, http://www.greggdrilling.com/technical-guides. Mayne, P.W., “NHI (2002) Manual on Subsurface Investigations: Geotechnical Site Characterization”, available through www.ce.gatech.edu/~geosys/Faculty/Mayne/papers/index.html, Section 5.3, pp. 107- 112. Robertson, P.K., R.G. Campanella, D. Gillespie and A. Rice, “Seismic CPT to Measure In-Situ Shear Wave Velocity”, Journal of Geotechnical Engineering ASCE, Vol. 112, No. 8, 1986 pp. 791-803. Robertson, P.K., Sully, J., Woeller, D.J., Lunne, T., Powell, J.J.M., and Gillespie, D.J., "Guidelines for Estimating Consolidation Parameters in Soils from Piezocone Tests", Canadian Geotechnical Journal, Vol. 29, No. 4, August 1992, pp. 539-550. Robertson, P.K., T. Lunne and J.J.M. Powell, “Geo-Environmental Application of Penetration Testing”, Geotechnical Site Characterization, Robertson & Mayne (editors), 1998 Balkema, Rotterdam, ISBN 90 5410 939 4 pp 35-47. Copies of ASTM Standards are available through www.astm.org 12 Table 1: Cone Penetration Testing Summary CPT Sounding Identification Date Termination Depth (ft) Depth of Soil Samples (ft) Depth of Groundwater Samples (ft) Depth of Pore Pressure Dissipation Tests (ft) B-01 3/14/2022 52.99 - 35, 44, 50 30.84 B-02 3/21/2022 50.03 continuous 16, 34, 41, 50 45.44 B-03 3/15/2022 57.91 - 42, 48, 56 38.22, 57.91 B-04 3/22/2022 47.24 - 30, 41, 47 41.50 B-05 3/14/2022 52.00 - 33, 52 48.72 B-06 3/16/2022 52.66 - 37, 44, 51 49.70 B-07 3/17/2022 51.35 - 33, 38, 51 31.99 B-08 3/16/2022 48.23 continuous 37, 43, 48 46.75 B-09 3/17/2022 49.38 - 19, 43, 49 48.09 B-10 3/17/2022 52.33 - 18, 36, 42, 46, 52 52.00 B-11R 6/28/2022 58.23 continuous 15, 37, 46, 53, 58 41.83 B-12 3/23/2022 11.65 - - - B-12a 3/23/2022 57.41 - 24, 30, 36, 45, 54 51.02 B-13 3/24/2022 69.06 - 17, 20, 36, 56, 63, 69 52.66 B-14 3/28/2022 53.48 - 17, 20, 49, 53 48.39 B-15 3/21/2022 55.12 continuous 16, 38, 52, 55 50.85 B-16 3/18/2022 56.59 - 10, 14, 42, 48 45.44 B-17 6/29/2022 66.77 continuous 28, 49, 53, 64 48.06 B-18a 3/29/2022 10.66 - - - B-18b 3/29/2022 11.81 - - - B-18c 3/29/2022 11.65 - - - B-18R 6/27/2022 73.33 - 34, 50, 58, 68 51.67 B-19a 3/18/2022 50.69 - 29, 43, 49 41.83 B-20 3/22/2022 65.12 - 30, 43, 52, 65 41.83 B-21 3/23/2022 57.25 continuous 32, 45, 50, 56 29.20, 57.25 B-22 3/24/2022 53.64 - - 42.16, 53.64 B-22a 3/24/2022 64.47 - 31, 40, 47, 52, 56 - B-23 3/25/2022 47.24 - - 30.02 B-23a 3/25/2022 62.99 - 28, 32, 36, 40, 44, 48, 55 56.59 B-24 3/31/2022 66.27 continuous 15, 27, 36, 46, 55, 66 25.75, 64.30 B-33 3/28/2022 25.75 - - - B-33a 3/28/2022 21.00 - - - B-33b 3/28/2022 45.11 continuous 18, 31, 42 45.11 B-34 4/1/2022 52.00 - 24, 34, 52 - APPENDIX A: CPT PLOTS CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 52.99 ft, Date: 3/14/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-01 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC104 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Clay Sand & silty sand Silty sand & sandy silt Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:02 PM 1 *Note: WSC added clarification to this file CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 52.99 ft, Date: 3/14/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-01 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC104 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Clay Sand & silty sand Silty sand & sandy silt Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:02 PM 2 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 50.03 ft, Date: 3/21/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-02 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Clay & silty clay Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:02 PM 3 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 50.03 ft, Date: 3/21/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-02 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Clay & silty clay Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:02 PM 4 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 57.91 ft, Date: 3/15/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-03 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC104 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample No Recovery Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Clay Clay & silty clay Sand & silty sand Sand & silty sand Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Clay Sand & silty sand Sand & silty sand Silty sand & sandy silt Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:03 PM 5 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 57.91 ft, Date: 3/15/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-03 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC104 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample No Recovery Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Clay Clay & silty clay Sand & silty sand Sand & silty sand Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Clay Sand & silty sand Sand & silty sand Silty sand & sandy silt Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:03 PM 6 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 47.24 ft, Date: 3/22/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-04 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:03 PM 7 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 47.24 ft, Date: 3/22/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-04 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:03 PM 8 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 52.00 ft, Date: 3/14/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-05 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-88 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay Clay & silty clay Clay Clay Clay Clay Clay & silty clay Clay & silty clay Clay Silty sand & sandy silt Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:03 PM 9 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 52.00 ft, Date: 3/14/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-05 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-88 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay Clay & silty clay Clay Clay Clay Clay Clay & silty clay Clay & silty clay Clay Silty sand & sandy silt Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:03 PM 10 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 52.66 ft, Date: 3/16/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-06 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Silty sand & sandy silt Clay & silty clay Sand & silty sand Sand & silty sand Sand & silty sand Clay & silty clay Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:03 PM 11 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 52.66 ft, Date: 3/16/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-06 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Silty sand & sandy silt Clay & silty clay Sand & silty sand Sand & silty sand Sand & silty sand Clay & silty clay Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:03 PM 12 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 51.35 ft, Date: 3/17/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-07 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Clay Clay Clay Clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Clay & silty clay Sand & silty sand Sand & silty sand Clay Clay Sand & silty sand Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Very dense/stiff soil CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:04 PM 13 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 51.35 ft, Date: 3/17/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-07 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Clay Clay Clay Clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Clay & silty clay Sand & silty sand Sand & silty sand Clay Clay Sand & silty sand Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Very dense/stiff soil CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:04 PM 14 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 48.23 ft, Date: 3/16/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-08 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-92 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Clay & silty clay Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:04 PM 15 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 48.23 ft, Date: 3/16/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-08 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-92 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Clay & silty clay Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:04 PM 16 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 49.38 ft, Date: 3/17/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-09 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Clay Clay CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:04 PM 17 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 49.38 ft, Date: 3/17/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-09 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Clay Clay CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:04 PM 18 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 52.33 ft, Date: 3/17/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-10 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-92 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:05 PM 19 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 52.33 ft, Date: 3/17/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-10 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-92 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:05 PM 20 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 58.23 ft, Date: 6/28/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-11R SITE: FIELD REP: BOBBY B. Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay & silty clay Clay Clay Silty sand & sandy silt Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Sand & silty sand Very dense/stiff soil Silty sand & sandy silt Clay & silty clay Very dense/stiff soil Very dense/stiff soil Clay Clay & silty clay CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:05:21 PM 1 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 58.23 ft, Date: 6/28/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-11R SITE: FIELD REP: BOBBY B. Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay & silty clay Clay Clay Silty sand & sandy silt Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Sand & silty sand Very dense/stiff soil Silty sand & sandy silt Clay & silty clay Very dense/stiff soil Very dense/stiff soil Clay Clay & silty clay CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:05:22 PM 2 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 11.65 ft, Date: 3/23/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-12 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay & silty clay Clay & silty clay Silty sand & sandy silt CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:05 PM 21 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 11.65 ft, Date: 3/23/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-12 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay & silty clay Clay & silty clay Silty sand & sandy silt CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:06 PM 22 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 57.41 ft, Date: 3/23/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-12a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER No Recovery GW Sample GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand Sand & silty sand Sand & silty sand Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:06 PM 23 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 57.41 ft, Date: 3/23/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-12a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER No Recovery GW Sample GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand Sand & silty sand Sand & silty sand Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:06 PM 24 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 69.06 ft, Date: 3/24/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-13 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER No Recovery GW Sample GW Sample GW Sample No Recovery GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay & silty clay Clay & silty clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Very dense/stiff soil Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:06 PM 25 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 69.06 ft, Date: 3/24/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-13 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER No Recovery GW Sample GW Sample GW Sample No Recovery GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay & silty clay Clay & silty clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Very dense/stiff soil Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:07 PM 26 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 53.48 ft, Date: 3/28/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-14 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Clay Clay & silty clay Clay & silty clay Very dense/stiff soil Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:07 PM 27 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 53.48 ft, Date: 3/28/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-14 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Clay Clay & silty clay Clay & silty clay Very dense/stiff soil Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:07 PM 28 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 55.12 ft, Date: 3/21/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-15 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER No Recovery GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Silty sand & sandy silt Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:08 PM 29 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 55.12 ft, Date: 3/21/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-15 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER No Recovery GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Silty sand & sandy silt Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:08 PM 30 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 56.59 ft, Date: 3/18/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-16 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:08 PM 31 *WSC added this GW Sample note at 56 ft bgs *GW Sample CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 56.59 ft, Date: 3/18/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-16 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:08 PM 32 *GW Sample *WSC added this GW Sample note at 56 ft bgs CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 66.77 ft, Date: 6/29/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-17 SITE: FIELD REP: BOBBY B. Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay Sand & silty sand Silty sand & sandy silt Clay Clay Clay & silty clay Clay & silty clay Clay Clay Clay Sand & silty sand Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Very dense/stiff soil Clay & silty clay Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:05:22 PM 3 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 66.77 ft, Date: 6/29/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-17 SITE: FIELD REP: BOBBY B. Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay Sand & silty sand Silty sand & sandy silt Clay Clay Clay & silty clay Clay & silty clay Clay Clay Clay Sand & silty sand Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Very dense/stiff soil Clay & silty clay Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:05:22 PM 4 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 10.66 ft, Date: 3/29/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-18a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:09 PM 33 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 10.66 ft, Date: 3/29/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-18a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:09 PM 34 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 11.81 ft, Date: 3/29/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-18b SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:10 PM 35 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 11.81 ft, Date: 3/29/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-18b SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:10 PM 36 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 11.65 ft, Date: 3/29/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-18c SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay Silty sand & sandy silt Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:10 PM 37 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 11.65 ft, Date: 3/29/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-18c SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay Silty sand & sandy silt Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:10 PM 38 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 73.33 ft, Date: 6/27/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-18R SITE: FIELD REP: BOBBY B. Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay & silty clay Clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Clay Silty sand & sandy silt Sand & silty sand Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:05:22 PM 5 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 73.33 ft, Date: 6/27/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-18R SITE: FIELD REP: BOBBY B. Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay & silty clay Clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Clay Silty sand & sandy silt Sand & silty sand Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:05:22 PM 6 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 50.69 ft, Date: 3/18/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-19a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Silty sand & sandy silt Clay Clay Clay & silty clay Silty sand & sandy silt Clay Clay Clay Clay & silty clay Silty sand & sandy silt Clay Very dense/stiff soil Very dense/stiff soil CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:11 PM 39 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 50.69 ft, Date: 3/18/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-19a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Silty sand & sandy silt Clay Clay Clay & silty clay Silty sand & sandy silt Clay Clay Clay Clay & silty clay Silty sand & sandy silt Clay Very dense/stiff soil Very dense/stiff soil CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:11 PM 40 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 65.12 ft, Date: 3/22/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-20 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample No Recovery GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Clay Sand & silty sand Sand & silty sand Clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:12 PM 41 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 65.12 ft, Date: 3/22/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-20 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample No Recovery GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Clay Sand & silty sand Sand & silty sand Clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:12 PM 42 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 57.25 ft, Date: 3/23/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-21 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Sand & silty sand Silty sand & sandy silt Clay Clay & silty clay Clay Clay & silty clay Clay Clay Clay Sand & silty sand Silty sand & sandy silt Clay & silty clay Clay & silty clay Clay & silty clay Clay & silty clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:12 PM 43 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 57.25 ft, Date: 3/23/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-21 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Sand & silty sand Silty sand & sandy silt Clay Clay & silty clay Clay Clay & silty clay Clay Clay Clay Sand & silty sand Silty sand & sandy silt Clay & silty clay Clay & silty clay Clay & silty clay Clay & silty clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:13 PM 44 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 53.64 ft, Date: 3/24/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-22 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:13 PM 45 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 53.64 ft, Date: 3/24/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-22 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:13 PM 46 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 64.47 ft, Date: 3/24/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-22a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay Clay & silty clay Sand & silty sand Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand Very dense/stiff soil Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:14 PM 47 *GW Sample *GW Sample *GW Sample *GW Sample *GW Sample *WSC added the locations of the GW samples at 31, 40, 47, 52, and 56 ft bgs. CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 64.47 ft, Date: 3/24/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-22a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay Clay & silty clay Clay Clay & silty clay Clay Clay Clay & silty clay Sand & silty sand Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Sand & silty sand Very dense/stiff soil Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:14 PM 48 *GW Sample *GW Sample *GW Sample *GW Sample *GW Sample *WSC added the locations of the GW samples at 31, 40, 47, 52, and 56 ft bgs. CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 47.24 ft, Date: 3/25/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-23 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Clay Clay & silty clay Clay Clay Clay Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Very dense/stiff soil Very dense/stiff soil Sand & silty sand Very dense/stiff soil Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:15 PM 49 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 47.24 ft, Date: 3/25/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-23 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Clay Clay & silty clay Clay Clay Clay Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Very dense/stiff soil Very dense/stiff soil Sand & silty sand Very dense/stiff soil Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:15 PM 50 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 62.99 ft, Date: 3/25/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-23a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER No Recovery GW Sample No Recovery No Recovery No Recovery No Recovery No Recovery Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Clay Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:15 PM 51 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 62.99 ft, Date: 3/25/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-23a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER No Recovery GW Sample No Recovery No Recovery No Recovery No Recovery No Recovery Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Clay Clay Clay & silty clay Clay Clay & silty clay Silty sand & sandy silt Sand & silty sand Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil Very dense/stiff soil CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:16 PM 52 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 66.27 ft, Date: 3/31/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-24 SITE: FIELD REP: BOBBY BROWNING Cone ID: SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample No Recovery GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Sand & silty sand Clay & silty clay Clay Clay Silty sand & sandy silt Clay & silty clay Sand & silty sand Clay & silty clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Very dense/stiff soil Clay & silty clay Silty sand & sandy silt Clay & silty clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Very dense/stiff soil Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:16 PM 53 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 66.27 ft, Date: 3/31/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-24 SITE: FIELD REP: BOBBY BROWNING Cone ID: SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER No Recovery No Recovery GW Sample No Recovery GW Sample GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Diss. Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Clay & silty clay Sand & silty sand Clay & silty clay Clay Clay Silty sand & sandy silt Clay & silty clay Sand & silty sand Clay & silty clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Very dense/stiff soil Clay & silty clay Silty sand & sandy silt Clay & silty clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Very dense/stiff soil Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:16 PM 54 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 25.75 ft, Date: 3/28/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-33 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Clay Silty sand & sandy silt Very dense/stiff soil Sand & silty sand Sand Very dense/stiff soil Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:17 PM 55 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 25.75 ft, Date: 3/28/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-33 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay & silty clay Clay Clay & silty clay Clay Silty sand & sandy silt Very dense/stiff soil Sand & silty sand Sand Very dense/stiff soil Sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:17 PM 56 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 28.00 ft, Date: 3/28/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-33a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER PRE-PUNCH Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER PRE-PUNCH Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER PRE-PUNCH Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER PRE-PUNCH N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER PRE-PUNCH SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay Clay & silty clay Clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:18 PM 57 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 28.00 ft, Date: 3/28/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-33a SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grainedWATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER PRE-PUNCH Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER PRE-PUNCH Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER PRE-PUNCH Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER PRE-PUNCH Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Soil Behaviour Type HAND AUGER PRE-PUNCH SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Silty sand & sandy silt Clay Clay & silty clay Clay Clay & silty clay Sand & silty sand Silty sand & sandy silt Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:18 PM 58 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 45.11 ft, Date: 3/28/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-33b SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt PRE-PUNCH GW Sample No Recovery GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction PRE-PUNCH Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio PRE-PUNCH Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 PRE-PUNCH N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type PRE-PUNCH SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Clay & silty clay Sand & silty sand Sand & silty sand Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:19 PM 59 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 45.11 ft, Date: 3/28/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-33b SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-31 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt PRE-PUNCH GW Sample No Recovery GW Sample Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction PRE-PUNCH Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio PRE-PUNCH Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u PRE-PUNCH Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Diss. Soil Behaviour Type PRE-PUNCH SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Clay & silty clay Sand & silty sand Sand & silty sand Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:19 PM 60 CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 52.00 ft, Date: 4/1/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-34 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained Cone resistance qt HAND AUGER GW Sample GW Sample No Recovery Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio SPT N60 HAND AUGER N60 (blows/ft) 100806040200Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 SPT N60 Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Silty sand & sandy silt Clay Clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Very dense/stiff soil Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:19 PM 61 *WSC added the note that the 51 ft bgs sample had recovery *Had recovery CLIENT: CITY OF SAN LUIS OBISPO GREGG DRILLING, LLC WWW.GREGGDRILLING.COM Total depth: 52.00 ft, Date: 4/1/2022VARIOUS LOCATIONS, SAN LUIS OBISPO, CA CPT: B-34 SITE: FIELD REP: BOBBY BROWNING Cone ID: GDC-19 SBTn legend 1. Sensitive fine grained 2. Organic material 3. Clay to silty clay 4. Clayey silt to silty clay 5. Silty sand to sandy silt 6. Clean sand to silty sand 7. Gravelly sand to sand 8. Very stiff sand to clayey sand 9. Very stiff fine grained WATER TABLE FOR ESTIMATING PURPOSES ONLY Cone resistance qt HAND AUGER GW Sample GW Sample No Recovery Tip resistance (tsf) 6004002000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Cone resistance qt Sleeve friction HAND AUGER Friction (tsf) 1614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Sleeve friction Friction ratio HAND AUGER Rf (%) 121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Friction ratio Pore pressure u HAND AUGER Pressure (psi) 4003002001000Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Pore pressure u Soil Behaviour Type HAND AUGER SBT (Robertson, 2010) 181614121086420Depth (ft)80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 Soil Behaviour Type Clay Silty sand & sandy silt Clay Clay Clay & silty clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Clay & silty clay Silty sand & sandy silt Clay & silty clay Very dense/stiff soil Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Silty sand & sandy silt Silty sand & sandy silt Clay & silty clay Sand & silty sand Sand & silty sand CPeT-IT v.19.0.1.24 - CPTU data presentation & interpretation software - Report created on: 7/1/2022, 3:33:19 PM 62 *WSC added the note that the 51 ft bgs sample had recovery *Had recovery APPENDIX B: PORE PRESSURE DISSIPATION TEST PLOTS Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-01 30.84 SLO Bobby Browning 0 1 2 3 4 5 6 7 8 9 10 0 100 200 300 400 500 600 700PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-02 45.44 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 100 200 300 400 500 600 700 800 900 1000PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-03 38.22 SLO Bobby Browning 0 1 2 3 4 5 6 7 8 9 10 0 100 200 300 400 500 600 700PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-03 57.91 SLO Bobby Browning 0 1 2 3 4 5 6 7 8 9 10 0 50 100 150 200 250 300 350PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-04 41.50 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 200 400 600 800 1000 1200PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-05 48.72 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 100 200 300 400 500 600 700PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-06 49.70 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 50 100 150 200 250 300 350 400PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-07 31.99 SLO Bobby Browning 0 1 2 3 4 5 6 7 8 9 10 0 100 200 300 400 500 600 700PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-08 46.75 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 100 200 300 400 500 600PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-09 48.06 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 100 200 300 400 500 600 700 800PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-10 52.00 SLO Bobby Browning 0 5 10 15 20 25 0 200 400 600 800 1000 1200 1400 1600 1800 2000PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-11R 41.83 SLO GW BOBBY B. 0 10 20 30 40 50 60 70 0 200 400 600 800 1000 1200 1400 1600 1800 2000PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-12a 51.02 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 200 400 600 800 1000 1200PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-13 52.66 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 200 400 600 800 1000 1200 1400 1600PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-14 48.39 SLO Bobby Browning 0 1 2 3 4 5 6 7 8 9 10 0 200 400 600 800 1000 1200 1400PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-15 50.85 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 100 200 300 400 500 600 700PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-16 45.44 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 200 400 600 800 1000 1200PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-17 48.06 SLO GW BOBBY B. 0 2 4 6 8 10 12 14 16 18 20 0 200 400 600 800 1000 1200 1400PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-18R 51.67 SLO GW BOBBY B. 0 5 10 15 20 25 0 200 400 600 800 1000 1200 1400 1600 1800 2000PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-19a 41.83 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 100 200 300 400 500 600PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-20 41.83 SLO Bobby Browning -5 0 5 10 15 20 0 100 200 300 400 500 600PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-21 29.20 SLO Bobby Browning 0 1 2 3 4 5 6 7 8 9 10 0 100 200 300 400 500 600 700PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-21 57.25 SLO Bobby Browning 0 10 20 30 40 50 60 70 0 500 1000 1500 2000 2500PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-22 42.16 SLO Bobby Browning 0 5 10 15 20 25 0 200 400 600 800 1000 1200 1400 1600 1800 2000PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-22 53.64 SLO Bobby Browning 0 5 10 15 20 25 0 100 200 300 400 500 600 700 800 900 1000PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-23 30.02 SLO Bobby Browning -10 -8 -6 -4 -2 0 2 4 6 8 10 0 100 200 300 400 500 600 700 800 900 1000PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-23a 56.59 SLO Bobby Browning 0 5 10 15 20 25 30 0 100 200 300 400 500 600 700 800 900PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-24 25.75 SLO Bobby Browning 0 2 4 6 8 10 12 14 16 18 20 0 100 200 300 400 500 600 700 800 900 1000PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-24 64.30 SLO Bobby Browning 0 5 10 15 20 25 30 0 200 400 600 800 1000 1200 1400PSI Time (seconds) Sounding: Depth (ft): Site: Engineer: GREGG DRILLING & TESTING Pore Pressure Dissipation Test B-33b 45.11 SLO Bobby Browning 0 5 10 15 20 25 30 35 40 0 100 200 300 400 500 600 700 800 900 1000PSI Time (seconds) C leath-Harris Geologists Soil Classification Logs Remedial Investigation Report City of San Luis Obispo | O Appendix O Cleath-Harris Geologists Soil Classification Logs O EXPLORATORY BORING LOG Page 1 / 2 PROJECT:SLO PCE DATE:3/8/22 BOREHOLE ID:B-02 SAMPLER TYPE:Macrocore MC5 LOCATION:Carmel Street BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:50 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:J. Carlson PID (ppm)Water SampleUSCSGraphic Log 10 YR 4/4 0.1 1.9 0.0 CL-ML 10 YR 5/4 CL 10 YR 5/4 CL-ML 10 5 15 20 25 Depth (Ft)Munsell(0-1) Artifical Fill Lithologic Description (depth interval in feet) CL (22-26) Clay; dark yellowish brown; firm clay. (18-20) Silty Clay trace Gravel; yellowish brown; firm clay and silt. (1-10) Clay; dark yellowish brown; stiff clay. X 10 YR 3/4 CL XX (20-22) Clay; yellowish brown; firm clay. (16.5-18) Clay; yellowish brown; stiff clay. (14-16.5) Silty Clay trace Gravel; yellowish brown; firm clay and silt, calcareous. (10-14) Silty Clay; yellowish brown; stiff clay and silt, calcareous. 10 YR 5/4 10 YR 5/4 CL-ML 10 YR 5/4 CL EXPLORATORY BORING LOG Page 2 / 2 PROJECT:SLO PCE DATE:3/8/22 BOREHOLE ID:B-02 SAMPLER TYPE:Macrocore MC5 LOCATION:Carmel Street BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:50 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:J. Carlson PID (ppm)Water SampleUSCSGraphic LogCL-ML SW-SM10 YR 4/3 CL-ML 10 YR 5/4 CL 10 YR 4/4 CL-ML 10 YR 5/4 SC 10 YR 5/4 Refusal at 50 feet. 10 YR 5/4 10 YR 5/4 10 YR 5/4 CL (32.5-34) Clay; dark yellowish brown; very stiff clay. 10 YR 4/3 SC CL-ML (38-40) Silty Clay; yellowish brown; firm clay and silt. (46-48) Clayey Sand trace Gravel; brown; subrounded to subangular, poorly sorted, felsic and mafic sand; subrounded to subangular sandsone, shale, chert and mafic gravel clasts to 1- inch diameter; soft clay. (48-48.7) Silty Clay; yellowish brown; firm clay and silt. (48.7-50) Clayey Sand with Gravel; yellowish brown; stiff clay; subangular chert, volcanic, and sandstone gravel clasts up to 0.5-inch diameter. 10 YR 5/4 SW-SM (42-46) Sand with Silt and Gravel; brown; fine to coarse subrounded to subangular, poorly sorted, felsic and mafic sand; subrounded to angular, poorly sorted, sandstone, shale, chert, and mafic gravel clasts up to 1-inch diameter; soft silt. First water @ 40 feet (rising to 22 feet). (40-42) Sand with Silt trace Gravel; yellowish brown; fine to coarse subrounded, poorly sorted felsic and mafic sand; soft silt; subrounded to subangular, moderatly well sorted sandstone, shale and mafic gravel clasts up to 0.5-inch diameter.Depth (Ft)30 50 35 40 45 1.9 0.5 1.3 0.5 0.1 0.0 Lithologic Description (depth interval in feet)Munsell10 YR 4/4 (34-34.5) Silty Clay; yellowish brown; soft clay. (34.5-38) Clay; yellowish brown; very stiff clay. 10 YR 4/4 CL CL (26-30) Clay trace Gravel; yellowish brown; very stiff clay. (30-32.5) Silty Clay; dark yellowish brown; firm clay and silt. EXPLORATORY BORING LOG Page 1 / 2 PROJECT:SLO PCE DATE:3/16/22 BOREHOLE ID:B-08 SAMPLER TYPE:Macrocore MC5 LOCATION:High Street near Higuera BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:48 DRILLING COMPANY:Gregg Drilling LOGGED BY:J. Carlson PID (ppm)Water SampleUSCSGraphic Log CL 0.2 0.0 0.0 0.0 10 YR 3/6 10 YR 3/6 CL 10 YR 4/6 CL 10 YR 4/6 CL 10 YR 3/6 CL-ML CL X X 10 YR 4/6 CL (6-8) Sandy Silt trace clay (from CPT). (1-6) Sandy Silt (from CPT). X X X X X X XMunsell (0-1) Artifical Fill Lithologic Description (depth interval in feet)Depth (Ft)10 5 15 20 25 10 YR 4/6 (20.5-24) Clay; dark yellowish brown; very stiff clay (13-16) Clay; dark yellowish brown; stiff plastic clay. (12-13) Sandy Clay; dark yellowish brown; stiff clay; fine to coarse, subrounded and subangular, poorly sorted quartz, felsic and shale sand. (20-20.5) Sandy Clay trace gravel; dark yellowish brown; fine to coarse, subrounded, poorly sorted quartz, felsic, shale sand; firm clay. (24-25.5) Clay trace sand; dark yellowish brown; stiff clay; trace very fine sand. (16-20) Silty Clay trace sand; dark yellowish brown; firm, plastic silty clay, trace coarse sand. (8-12) Clay trace Silt; dark yellowish brown; very stiff clay; trace silt, sand, gravel. EXPLORATORY BORING LOG Page 2 / 2 PROJECT:SLO PCE DATE:3/16/22 BOREHOLE ID: B-08 SAMPLER TYPE:Macrocore MC5 LOCATION:High Street near Higuera BOREHOLE DIAMETER: 2.25-inch DRILLING RIG: MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE: 48 DRILLING COMPANY: Gregg Drilling LOGGED BY:J. Carlson PID (ppm)Water SampleUSCSGraphic LogCL First water @ 31 feet (rising to 6 feet) 0.1 50 SW-SC 10 YR 3/6 SP 10 YR 4/6 10 YR 4/1 0.3 0.1 0.0 0.3 10 YR 4/1 35 40 45 Depth (Ft)30 (35.5-40) Clayey Sand with Gravel; dark yellowish brown; fine to coarse, subrounded and subangular, poorly sorted quartz, felsic and mafic sand; soft clay with clayey silt lense at 39.5 feet; fine to 2-inch diameter, rounded to subangular, poorly sorted sandstone, shale, serpentinite gravel.10 YR 3/6 SC (31-32) Clayey Sand with Gravel; dark gray; fine to coarse, rounded and subrounded, poorly sorted quartz, felsics, shale sand; soft to firm clay; fine to 2-inch diameter, subrounded poorly sorted sandstone and shale gravel. (32-35.5) Sand with Clay and Gravel; dark gray; fine to coarse, subrounded, poorly sorted sandstone, shale, quartz sand; fine to 2-inch diameter, sandstone, shale gravel; soft clay. (25.5-31) Silt trace sand; dark yellowish brown; silt; firm clay; trace very fine sand. Lithologic Description (depth inteval in feet)Munsell(48-50) Bedrock; angular fragments serpentinite plugging sampler barrel. 10 YR 4/1 SW (44-48) Sand with Gravel; dark gray; fine to coarse, subrounded, poorly sorted quartz sand; subround to subangular, poorly sorted sandstone, shale, serpentinite gravel to 0.75-inch diameter. ML 10 YR 4/1 SC (40-44) Sand trace clay; dark yellowish brown; fine to medium, well sorted, subrounded quartz sand; trace soft clay. EXPLORATORY BORING LOG Page 1 / 3 PROJECT:SLO PCE DATE:6/29/22 BOREHOLE ID: B-11R SAMPLER TYPE:Macrocore MC5 LOCATION:Bridge Street near BeeBee Street BOREHOLE DIAMETER: 2.25-inch DRILLING RIG: MARL™ 30-ton CPT push rig TOTAL DEPTH OF HOLE: 57 DRILLING COMPANY: Gregg Drilling LOGGED BY:J. Carlson PID (ppm)Water SampleUSCSGraphic Log (17-21) Clay (from CPT). No Recovery. (13-17) Clay with Sand trace gravel; brown; soft clay; fine to coarse, subrounded to subangular, poorly sorted quartz sand; fine to 0.75-inch diameter, subangular shale gravel. (9-13) Clay; dark brown; soft clay. 10 YR 5/3 CL X X X 10 YR 3/3 CL (21-25) Clay; dark brown; very stiff clay.Munsell(0-1) Artifical Fill Lithologic Description (depth interval in feet))tF( htpeDX X X 5 15 20 25 (5-9) Sandy Silt; yellowish brown, inorganic silt; fine to coarse, subrounded to subangular quartz sand. X X X (1-5) Clayey Silt (from CPT). 0.0 10 YR 5/6 ML X 0.0 0.0 0.0 CL 10 0.0 10 YR 3/3 EXPLORATORY BORING LOG Page 2 / 3 PROJECT:SLO PCE DATE:6/29/22 BOREHOLE ID: B-11R SAMPLER TYPE:Macrocore MC5 LOCATION:Bridge Street near BeeBee Street BOREHOLE DIAMETER: 2.25-inch DRILLING RIG: MARL™ 30-ton CPT push rig TOTAL DEPTH OF HOLE: 57 DRILLING COMPANY: Gregg Drilling LOGGED BY:J. Carlson PID (ppm)Water SampleUSCSGraphic Log(41-44) Silty Clay with Sand; yellowish brown; soft clay; inorganic silt; fine to coarse, subrounded, poorly sorted, felsic and mafic sand. (45-47) Sandy Clay; yellowish brown; very soft clay; fine to coarse, subrounded, poorly sorted, felsic and mafic sand. (44-45) Sandy Clay trace gravel; yellowish brown; soft clay; fine to coarse, subrounded, poorly sorted, felsic and mafic sand; trace serpentinite clasts. (47-48) Silty Sand; pale brown; fine to coarse, subrounded, poorly sorted, felsic and mafic sand. Strongly effervescent. (49-54) Silty Clay; yellowish brown; soft clay; inorganic silt. 10 YR 3/3 0.0 10 YR 5/4 CL CL 10 YR 6/3 SM 10 YR 5/4 CL SP (48-49) Sand; grayish green; mostly medium, subrounded, serpentinite sand. (25-29) Clay (from CPT). No Recovery. X (33-37) Silty Clay trace sand; dark brown; soft to very stiff clay; inorganic silt; trace sand. (37-41) Silty Clay with Sand trace gravel; brown; very soft to soft clay and silt; fine to coarse, subrouded quartz sand; trace subrounded shale gravel to 0.75-inch diemeter. (29-33) Clay; dark brown; soft to stiff clay. Lithologic Description (depth inteval in feet) 35 )tF( htpeD30 10 YR 5/4 CL CL X CL CL 50 40 45 Munsel0.0 0.0 GLEY 5G 5/2 X 0.0 0.0 0.3 0.0 X 10 YR 3/3 0.0 10 YR 4/3 10 YR 5/40.0 EXPLORATORY BORING LOG Page 3 / 3 PROJECT:SLO PCE DATE:6/29/22 BOREHOLE ID: B-11R SAMPLER TYPE:Macrocore MC5 LOCATION:Bridge Street near BeeBee Street BOREHOLE DIAMETER: 2.25-inch DRILLING RIG: MARL™ 30-ton CPT push rig TOTAL DEPTH OF HOLE: 57 DRILLING COMPANY: Gregg Drilling LOGGED BY:J. Carlson PID (ppm)Water SampleUSCSGraphic Log (49-54) Silty Clay; yellowish brown; soft clay; inorganic silt. (54-55) Clay; grayish green; stiff clay. Lithologic Description (depth interval in feet) CL10 YR 5/40.0 CLGLEY 5G 5/2Munsell)tF( htpeD55 (55-57) Bedrock; gray; stiff clay; 1-inch diameter, angular, serpentinite fragments 10 YR 5/1 X X CPT went to 58 feet. Water Samples collected at 46, 53, and 58 feet. Bedrock encountered at 55 feet on Direct Push EXPLORATORY BORING LOG Page 1 / 3 PROJECT:SLO PCE DATE:3/22/22 BOREHOLE ID:B-15 SAMPLER TYPE:Macrocore MC5 LOCATION:Higuera Street BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:51 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:C. Springer (WSC)PID (ppm)USCSGraphic Log CLCL 10 YR 4/3 10 YR 4/6 CL X X 10 YR 3/4 CL 10 YR 3/4 CL X (0-1) Artifical Fill (asphalt/road base) (1-3) Clayey Silt (from CPT). (3-8) Silty Cla y trace gravel; brown; soft clay; trace subrounded to subangular metavolcanic gravel clasts up to 0.25-inch diameter.MunsellLithologic Description (depth interval in feet)Depth (Ft)(8-10) Clay trace Sand; dark yellowish brown; soft clay; fine, rounded poorly sorted gravel. (19-20) Silty Clay (from CPT; no sample recovery). (10-12) Clay trace Sand; dark yellowish brown; stiff clay; coarse, subrounded sand. 10 YR 5/6 10 YR 3/4 X (12-14) Clay trace Sand and Gravel; yellowish brown; stiff clay; coarse to very coarse, shale, sandstone, metavolcanic and quartz sand; fine metavolcanic gravel. (14-16) Clay trace Sand; dark yellowish brown; stiff clay; trace coarse sand. (16-18) Silty Clay (from CPT; no sample recovery). (18-18.5) Clay trace Gravel; yellowish brown; soft clay; trace fine, subrounded, poorly sorted gravel. (18.5-19) Clay trace Sand; dark yellowish brown; hard clay; trace coarse sand. 10 YR 3/4 CL 10 YR 5/6 X X X 0.1 0.0 0.0 5.4 X X CL X X X 10 5 15 20 25 (20-24) Clay trace Gravel and Sand; dark yellowish brown; hard clay; trace gravel; trace subrounded coarse sand. (24-28) Silty Clay (from CPT; no sample recovery).X X XWater SampleCL-ML EXPLORATORY BORING LOG Page 2 / 3 PROJECT:SLO PCE DATE:3/22/22 BOREHOLE ID:B-15 SAMPLER TYPE:Macrocore MC5 LOCATION:Higuera Street BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:51 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:C. Springer (WSC)PID (ppm)USCSGraphic LogSC CL CL SC10 YR 5/6 XX X (49-49.5) Sand trace clay; yellowish brown; coarse subrounded well-sorted metavolcanic sand. 10 YR 5/6 CL SP X 10 YR 4/6 10 YR 5/6 10 YR 5/6 CL 35 40 45 50 0.4 1.4 0.2 (34.5-35) Clay trace sand; yellowish brown; very soft clay; mostly fine with some coarse trace sand. X X X X (48-49) Clayey Gravel with Sand; brownish yellow; fine to medium, angular to subrounded metavolcanic, sandstone gravel; coarse metavolcanic sand; soft clay. 10 YR 6/6 CL 10 YR 6/8 GC X X X 10 YR 5/6 CL X 10 YR 6/8 10 YR 6/6 Lithologic Description (depth interval in feet)MunsellDepth (Ft)30 1.7 0.2 (29-30) Clay trace Silt and Sand; yellowish brown; hard clay; trace silt, coarse sand. (30-32) Silty Clay (from CPT; no sample recovery). (32-32.5) Clayey Sand; dark yellowish brown; medium clay; medium to coarse, moderately well sorted sand. (35-36) Silty Clay (from CPT; no sample recovery). (32.5-34.5) Sandy Clay; yellowish brown; soft clay; fine to coarse, subangular sand. (36-36.5) Clay and Sand; brownish yellow; medium to soft clay; fine to very coarse, subangular and subrounded sand. (36.5-37.5) Sand trace Clay and Gravel; brownish yellow; very coarse subangular and subrounded shale, metavolcanic sand; trace medium clay; trace fine gravel. (37.5-44) Silty Clay (from CPT; no sample recovery). (44-45.5) Clay trace Sand; yellowish brown; soft clay; trace fine sand; rare coarse sand. (45.5-48) Clay and Sand; brownish yellow; very soft clay; coarse to very coarse, subrounded sand. X X X (28-29) Clay with Sand; yellowish brown; soft, silty clay; trace fine to coarse, poorly sorted sand.10 YR 5/6 CLWater Sample EXPLORATORY BORING LOG Page 3 / 3 PROJECT:SLO PCE DATE:3/22/22 BOREHOLE ID: B-15 SAMPLER TYPE: LOCATION:Higuera Street BOREHOLE DIAMETER: DRILLING RIG: MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE: 51 feet DRILLING COMPANY: Gregg Drilling LOGGED BY:C. Springer (WSC)PID (ppm)SampleUSCSGraphic LogCPT went to 55 feet. Water Samples were collected at 52 and 55 feet. Direct Push refusal at 51 feetDepth (Ft)MunsellLithologic Description (depth interval in feet) 55 X X (49.5-55) Sand (from CPT). X 2.25-inch Macrocore MC5 EXPLORATORY BORING LOG Page 1 / 3 PROJECT:SLO PCE DATE:6/30/22 BOREHOLE ID:B-17 SAMPLER TYPE:Macrocore MC5 LOCATION:BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL™ 30-ton CPT push rig TOTAL DEPTH OF HOLE:57 DRILLING COMPANY:Gregg Drilling LOGGED BY:J. Carlson PID (ppm)Water SampleUSCSGraphic Log 0.2 2.0 0.0 10 0.0 10 YR 5/4 SCMunsell (0-5) Clay; dark brown; stiff clay. Lithologic Description (depth interval in feet))tF( htpeD5 15 20 25 0.0 CL 10 YR 3/3 CL 10 YR 3/3 CL (5-13) Clay trace Sand; dark brown; very stiff clay; trace sand. (13-17) Sandy Clay with Gravel; yellowish brown; stiff clay; fine to coarse, subrounded, poorly sorted quartz sand; subrounded, well sorted, shale and serpentinite gravel up to 0.5-inch diameter. (17-21) Clayey Sand with Gravel; yellowish brown; fine to coarse, subrounded to subangular, poorly sorted quartz sand; stiff clay; subrounded, well sorted, shale, sandstone, and serpentinite gravel to 0.5-inch diameter. 10 YR 5/3 SW- SC (21-33) Sand with Clay and Gravel; brown; fine-coarse, subrounded to subangular, poorly sorted, felsic and mafic sand; fine to 0.75-inch diameter, subrounded to subangular, well sorted, shale, sandstone, serpentinite, and metavolcanic gravel; soft clay. 10 YR 5/4 Adjacent to Highway 101 On-Ramp, off Madonna Rd EXPLORATORY BORING LOG Page 2 / 3 PROJECT:SLO PCE DATE:6/30/22 BOREHOLE ID:B-17 SAMPLER TYPE:Macrocore MC5 LOCATION:BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL™ 30-ton CPT push rig TOTAL DEPTH OF HOLE:57 DRILLING COMPANY:Gregg Drilling LOGGED BY:J. Carlson PID (ppm)Water SampleUSCSGraphic Log(49-52) Clayey Sand trace gravel; dark brown; fine to coarse, subrounded to subangular, well sorted, felsic and mafic sand; soft clay; trace shale and serpentinite gravel. 10 YR 5/3 (45-48) Sandy Clay trace gravel; brown; soft clay; fine to coarse, subrounded to subangular, poorly sorted, quartz sand; trace gravel. (41-45) Silty Clay (from CPT). No Recovery. X (48-49) Sand trace gravel; grayish green; coarse, subangular, well sorted, decomposed serpentinite sand. X X 10 YR 5/3 CL SP 10 YR 5/4 0.1 35 )tF( htpeD30 CL CL 10 YR 3/3 SC50 40 45 Munsel0.0 GLEY 5G 5/2 2.7 0.6 1.6 Lithologic Description (depth inteval in feet) (33-37) Sandy Clay trace gravel; yellowish brown; soft clay; fine to coarse, subrounded to subangular, poorly sorted, felsic and mafic sand; trace gravel. (37-41) Clay; brown; soft clay. 10 YR 5/3 GW (21-33) Sand with Clay and Gravel; brown; fine-coarse, subrounded to subangular, poorly sorted, felsic and mafic sand; fine to 0.75-inch diameter, subrounded to subangular, well sorted, shale, sandstone, serpentinite, and metavolcanic gravel; soft clay. 0.0 2.0 Adjacent to Highway 101 On-Ramp, off Madonna Rd EXPLORATORY BORING LOG Page 3 / 3 PROJECT:SLO PCE DATE:6/30/22 BOREHOLE ID:B-17 SAMPLER TYPE:Macrocore MC5 LOCATION:BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL™ 30-ton CPT push rig TOTAL DEPTH OF HOLE:57 DRILLING COMPANY:Gregg Drilling LOGGED BY:J. Carlson PID (ppm)Water SampleUSCSGraphic Log (49-52) Clayey Sand trace gravel; dark brown; fine to coarse, subrounded to subangular, well sorted, felsic and mafic sand; soft clay; trace shale and serpentinite gravel. 10 YR 5/4 SC (64-66) Sand (from CPT.) No Recovery. X X X XXX (61-64) Silty Sand (from CPT.) No Recovery. X X X (59-61) Silty Clay (from CPT.) No Recovery. XXX (58-59) Clay (from CPT.) No Recovery. (57-58) Silty Sand (from CPT.) No Recovery. 10 YR 3/3 SC 10 YR 5/4 GCMunsell Lithologic Description (depth interval in feet) CPT went to 66.76 feet. Water Samples collected at 28, 49, 53 and 64 feet. Refusal at 57 feet on Direct Push (53-57) Clayey Sand with Gravel; dark brown; coarse, subangular, well sorted, felsic and mafic sand; angular serpentinite clast in sampler shoe - unable to push further. (52-53) Clayey Gravel with Sand; yellowish brown; fine to 0.75-inch diameter, subangular, poorly sorted, shale and serpentinite gravel; soft clay; coarse, subangular, well sorted, felsic and mafic sand. 60 65 0.1 0.0)tF( htpeD55 X X X Adjacent to Highway 101 On-Ramp, off Madonna Rd EXPLORATORY BORING LOG Page 1 / 3 PROJECT:SLO PCE DATE:3/23/22 BOREHOLE ID:B-21 SAMPLER TYPE:Macrocore MC5 LOCATION:El Mercado BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:52 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:C. Springer (WSC)PID (ppm)USCSGraphic Log SC GM X X X 10 YR 5/8 10 YR 6/6 SC 10 YR 4/4 CL X X CLMunsell Lithologic Description (depth interval in feet)Depth (Ft)(20-24.5) Sandy Silt and Clayey Silt (from CPT; no sample recovery). (8-12) Gravelly Sand with Clay; brownish yellow; fine to coarse sand; angular to subrounded, poorly sorted gravel to 1.5-inch diameter. (12-13) Clayey Sand with Gravel; brownish yellow; fine to coarse sand; gravel to 0.75- inch diameter. (13-16) Sandy Clay trace gravel; dark yellowish brown; hard clay; mostly fine to medium sand; trace coarse sand and fine gravel. (16-19.5) Sandy Silt and Clayey Silt (from CPT; no sample recovery). 10 5 15 20 25 10 YR 6/6 X (19.5-20) Clayey Sand with Gravel; yellowish brown; coarse, subangular and angular sand; fine gravel, soft clay. (0-1) Artifical Fill (2-4) Clayey Silt (from CPT). (1-2) Clay (from CPT). (4-6) Sandy Silt (from CPT). (6-8) Silty Sand (from CPT). X X X X X X X X X X X X X X 3.2 26.4 0.8 X 10 YR 5/6Water Sample EXPLORATORY BORING LOG Page 2 / 3 PROJECT:SLO PCE DATE:3/23/22 BOREHOLE ID:B-21 SAMPLER TYPE:Macrocore MC5 LOCATION:El Mercado BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:52 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:C. Springer (WSC)PID (ppm)USCSGraphic LogSC 50 10 YR 6/6Depth (Ft)30 10 YR 6/6 10 YR 6/6 CL CL SC10 YR 6/8 X X X 10 YR 5/4 SP-SC CL10 YR 6/6 10 YR 5/6 X Lithologic Description (depth inteval in feet)Munsell35 40 45 (47-48) Clayey Sand trace Gravel; brownish yellow; mostly coarse, rounded to subangular, sand; hard clay; trace subrounded to rounded gravel to 0.75-inch diameter. (48-51.5) Sand (from CPT; no sample recovery). (24.5-28) Sandy Clay with Gravel; yellowish brown; soft to very soft clay; fine to coarse, subangular to subrounded, poorly sorted sand; fine, angular to subrounded gravel to . (45.5-47) Clay trace Sand; brownish yellow; soft clay; trace mostly fine sand. (44-45.5) Sand with Clay trace gravel; yellowish brown; mostly coarse, subrounded to subangular, moderately well sorted sand; trace fine gravel to 0.5-inch diameter. (28-31.5) Sand (from CPT; no sample recovery). (31.5-32) Clayey Sand trace Gravel; brownish yellow; very soft clay; coarse, rounded to subrounded quartz, metavolcanic sand; fine, subrounded to rounded quartz, metavolcanic gravel clasts. (38-39) Sandy Clay; yellowish brown; soft clay; fine to medium, very well sorted sand. (32-36) Clay trace Sand; brownish yellow; very hard clay; trace fine sand. (37-38) Clayey Sand trace Gravel; yellowish brown; very soft clay; coarse sand; trace subangular to subrounded gravel. (36-37) Sandy Silt and Clayey Silt (from CPT; no sample recovery). X X 10 YR 6/6 SC 10 YR 5/6 CL (41-44) Clay trace sand; brownish yellow; firm clay; trace fine sand. (39-40) Sandy Clay trace gravel; brownish yellow; soft to very soft clay; fine to coarse, very poorly sorted, angular to subangular sand. (40-41) Sandy Clay with Gravel; yellowish brown; soft to very soft clay; fine to coarse sand, angular to subangular gravel. 10 YR 6/6 10 YR 5/6 CL CL CL 0.9 1.2 0.2 0.5 0.5 X X XWater Sample EXPLORATORY BORING LOG Page 3 / 3 PROJECT:SLO PCE DATE:3/23/22 BOREHOLE ID:B-21 SAMPLER TYPE:Macrocore MC5 LOCATION:El Mercado BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:52 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:C. Springer (WSC)PID (ppm)USCSGraphic LogSC CPT went to 57 feet. Water Sample was collected at 56 feet. Direct Push refusal at 52 feet 55 Depth (Ft)(52-57) Mostly Sand (from CPT). (51.5-52) Clayey Sand trace Gravel; brownish yellow; mostly coarse, rounded to subangular, sand; hard clay; trace subrounded to rounded gravel to 0.75-inch diameter. Lithologic Description (depth inteval in feet) X X XXXMunselll10 YR 6/6 XWater Sample EXPLORATORY BORING LOG Page 1 / 3 PROJECT:SLO PCE DATE:3/31/22 BOREHOLE ID:B-24 SAMPLER TYPE:Macrocore MC5 LOCATION:Prado Road BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:60 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:C. Springer (WSC)PID (ppm)USCSGraphic Log CL CLCL 10 10 YR 5/6 10 YR 5/6 CL 10 YR 6/8 X X X X X X X X X X 20 25 0.1 0.2 X X X 10 YR 5/6 CL 10 YR 6/8Munsell (0-1) Artifical Fill (asphalt/road base) Lithologic Description (depth interval in feet)Depth (Ft)(8-16) Clay trace sand; yellowish brown; hard clay; trace fine to coarse, subrounded sand. (24-26) Sandy Silt and Clayey Silt (from CPT; no sample recovery). (23.5-24) Gravelly Clay with Sand; brownish yellow; soft to firm clay; fine to coarse sand; fine subrounded gravel. (23-23.5) Sandy Clay trace gravel; brownish yellow; firm clay; fine to coarse sand; trace fine subrounded to subangular shale and metavolcanic gravel. (20-23) Clay trace Sand; yellowish brown; hard clay; trace subrounded and subangular, very well sorted coarse sand. (17.5-20) Sandy Clay trace Gravel; yellowish brown; very hard clay; fine to coarse, poorly sorted sand; trace subangular to subrounded gravel to 0.5-inch diameter. 5 15 (1-2) Clayey Silt (from CPT). (2-4) Sandy Silt (from CPT). (4-6) Silty Clay (from CPT). (6-8) Clay (from CPT). 10 YR 5/6 CL (17-17.5) Clay trace Sand; yellowish brown; soft to firm clay; trace fine to coarse sand. (16-17) Clay and Silty Clay (from CPT; no sample recovery). X X X X X X X XWater Sample EXPLORATORY BORING LOG Page 2 / 3 PROJECT:SLO PCE DATE:3/31/22 BOREHOLE ID: B-24 SAMPLER TYPE:Macrocore MC5 LOCATION:Prado Road BOREHOLE DIAMETER: 2.25-inch DRILLING RIG: MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE: 60 feet DRILLING COMPANY: Gregg Drilling LOGGED BY:C. Springer (WSC)PID (ppm)USCSGraphic LogSC X X X X X X 10 YR 5/8 X X X (48-50) Sandy Silt and Clayey Silt (from CPT; no sample recovery). 0.2 0.5 X X X X X X 10 YR 4/6 GC 10 YR 5/8 GC SCDepth (Ft)30 0.2 Lithologic Description (depth interval in feet)Munsell35 40 45 50 (31-32) Clayey Gravel with Sand; dark yellowish brown; firm clay; fine to coarse sand; subangular to subrounded, mostly volanic gravel clasts to 0.75-inch diameter. (32-34) Clay and Silty Clay (from CPT; no sample recovery). (28-31) Clay and Silty Clay (from CPT; no sample recovery). (26-27) Sandy Clay trace gravel; yellowish brown; firm clay; fine to coarse sand; fine subrounded gravel. (27-28) Gravelly Clay with Sand; brownish yellow; very hard clay; fine to coarse sand; subangular to rounded gravel to 0.75-inch diamater. 10 YR 5/8 10 YR 6/6 CL CL 10 YR 6/8 (43-45) Clayey Sand with Gravel; yellowish brown; soft to very soft clay; fine to coarse, poorly sorted sand; subrounded to angular volcanic, shale, and chert gravel to 0.5- inch diameter. (42-43) Clayey Sand with Gravel; brownish yellow; soft clay; fine to coarse sand; fine, subrounded to rounded volcanic and quartz gravel to 0.5-inch diameter.10 YR 6/8 10 YR 5/8 SC SC (34-39) Clayey Gravel with Sand; yellowish brown; soft clay; fine to coarse sand; fine, subrounded to subangular volcanic, shale, metavolcanic gravel to 0.5-inch diameter. (39-40) Clayey Sand with Gravel; brownish yellow; soft clay; fine to coarse sand; fine, subrounded to subangular volcanic, shale, quartz gravel to 0.5-inch diameter. (40-42) Sandy Silt (from CPT; no sample recovery). (45-47) Sandy Clay trace gravel; yellowish brown; firm clay; fine to coarse sand; trace subangular to subrounded fine gravel. (47-48) Sandy Clay; brownish yellow; very hard clay; mostly fine to medium sand, trace coarse sand. 10 YR 5/8 CL 10 YR 6/8 CLWater Sample EXPLORATORY BORING LOG Page 3 / 3 PROJECT:SLO PCE DATE:3/31/22 BOREHOLE ID:B-24 SAMPLER TYPE:Macrocore MC5 LOCATION:Prado Road BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:60 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:C. Springer (WSC)PID (ppm)USCSGraphic LogSC Direct Push refusal at 60 feet 10 YR 6/8 SC CL 10 YR 5/8 10 YR 6/8 CL X XX 10 YR 6/8 60 65 Depth (Ft)MunsellLithologic Description (depth interval in feet) (50-50.5) Clayey Sand with Gravel; yellowish brown; soft clay; fine to coarse, subangular to subrounded, poorly sorted sand; gravel to 0.6-inch diameter.0.0 0.0 55 (60-66) Sandy Silt (from CPT). (50.5-52) Sandy Clay; brownish yellow; very hard clay; mostly fine to medium sand. (52-56) Clayey Sand with Gravel; brownish yellow; soft clay; fine to coarse, subrounded to rounded, poorly sorted sand; subrounded to subangular, shale and volcanic gravel clasts to 0.8-inch diameter. (56-60) Clay trace sand; brownish yellow; soft clay; trace mostly fine sand.Water SampleCPT went to 66 feet. Water Sample was collected at 63 feet. EXPLORATORY BORING LOG Page 1 / 3 PROJECT:SLO PCE DATE:3/8/22 BOREHOLE ID:B-25 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Parkview Place BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:68 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)Water SampleUSCSGraphic Log Munsell10 YR 2/2 (0-6) Clay; very dark brown; very stiff clay (6-9) Clay trace gravel; dark yellowish brown; firm clay; trace subrounded chert gravel. CL Lithologic Description (depth interval in feet) (22-23) Clayey Sand with Gravel; yellowish brown; mostly medium to coarse subrounded to subangular chert, volcanic, and sandstone sand; subrounded to subangular chert, volcanics, sandstone gravel up to 0.75-inch diameter; firm clay. (23-24) Sandy Clay with Gravel; dark yellowish brown; soft clay; mostly medium to coarse subangular chert, volcanic and sandstone sand; gravel clasts up to 0.25-inch diameter mostly subangular chert, volcanic, and sandstone clasts.Depth (Ft)0.0 10 YR 5/6 10 5 15 20 25 8.5 10 YR 4/6 CL 10 YR 4/6 10 YR 4/3 CL 10 YR 5/6 10 YR 5/6 10 YR 3/4 GP (18-19) Gravelly Clay with Sand; dark yellowish brown; firm clay; subrounded chert and volcanic gravel clasts up to 0.5-inch diameter; mostly subrounded, medium to coarse sand. (9-10) Sandy Clay trace gravel; dark yellowish brown; firm to soft clay; medium to coarse subrounded sand. (10-11) Sandy Clay; brown; firm clay; medium to coarse subrounded sand. (11-13) Clayey Sand trace gravel; brown; mostly medium subrounded metavolcanic, chert and quartz sand; trace subrounded gravel. (13-14) Clay with Sand; brown; firm clay; mostly medium subrounded metavolcanic, chert and quartz sand. (14-15) Gravel trace sand and clay; dark yellowish brown; subrounded serpentinite, metavolcanic, sandstone, and chert gravel clasts up to 1-inch diameter; trace medium, subrounded sand and soft clay. (15-18) Gravel with Sand; yellowish brown; round to subrounded volcanic, chert, and sandstone gravel clasts up to 1-inch diameter; mostly medium to coarse subangular sand. First water @ 15 feet. 0.1 SC CL 10 YR 4/6 10 YR 4/3 10 YR 3/4 CL 10 YR 3/6 SC CL CL CL GC 10 YR 4/3 CL GP 10 YR 5/4 (24-25) Sandy Clay; dark yellowish brown; firm clay; mostly coarse, subrounded to subangular chert, volcanic, and sandstone sand. (21-22) Gravelly Clay with Sand; yellowish brown; firm clay; subrounded to subangular chert, volcanics, and sandstone gravel up to 0.75-inch diameter; mostly medium to coarse, subrounded to subangular sand. (19-21) Sandy Clayey Gravel; dark yellowish brown; subrounded chert and volcanic clasts up to 2-inch diameter; firm clay; mostly subrounded, medium to coarse sand. EXPLORATORY BORING LOG Page 2 / 3 PROJECT:SLO PCE DATE:3/8/22 BOREHOLE ID:B-25 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Parkview Place BOREHOLE DIAMETER: 6-inch DRILLING RIG: Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE: 68 feet DRILLING COMPANY: Gregg Drilling LOGGED BY:A. Berge PID (ppm)Water SampleUSCSGraphic LogLithologic Description (depth interval in feet)Munsell10 YR 4/6 10 YR 4/6 10 YR 4/6 35 40 45 12.4 0.0Depth (Ft)30 10 YR 4/6 10 YR 3/4 (46-50) Clay with Gravel; dark yellowish brown; stiff clay; subangular chert, volcanic, and sandstone gravel clasts up to 0.5-inch diameter. (45-46) Gravelly Clay; dark yellowish brown; stiff clay; subangular chert, volcanic, and sandstone gravel clasts up to 0.5-inch diameter. (37-38) Gravel with Clay trace sand; dark yellowish brown; up to 3-inch gravel clasts subangular chert, volcanic, and sandstone; soft clay; medium to coarse subangular sand.10 YR 4/6 CL 10 YR 4/6 10 YR 4/6 10 YR 4/6 50 10 YR 4/6 CL CL (38-40) Gravelly Clay trace sand; dark yellowish brown; stiff clay; mostly fine subangular chert, volcanic, and sandstone gravel clasts; medium to coarse sand. 10 YR 4/6 10 YR 4/6 CL CL CL GC GP-GC CL (33-35) Gravelly Clay; dark yellowish brown; hard clay; subangular chert, volcanic, and sandstone gravel clasts 0.25 to 0.5-inch diameter. (28-33) Clay; dark yellowish brown; hard clay. (27-28) Gravelly Clay; dark yellowish brown; very stiff clay; subangular chert, volcanic, and sandstone gravel clasts up to 0.25-inch diameter. (26-27) Sandy Clay with Gravel; dark yellowish brown; firm clay; subrounded and subangular chert, volcanic, and sandstone sand; subrounded chert, volcanic, and sandstone gravel clasts up to 0.25-inch diameter. CL CL CL8.5 (25-26) Sandy Clay trace Gravel; dark yellowish brown; firm clay; subrounded and subangular chert, volcanic, and sandstone sand; subrounded chert, volcanic, and sandstone gravel clasts up to 0.25 inch diameter. (36-37) Clayey Gravel trace sand; dark yellowish brown; mostly fine gravel clasts of subangular chert, volcanics, and sandstone; firm to soft clay; medium to coarse subangular sand. (35-36) Gravelly Clay with Sand; dark yellowish brown; firm to soft clay; mostly fine gravel clasts subangular chert, volcanic, and sandstone; medium to coarse subangular chert, volcanic and sandstone sand. (40-45) Clay trace gravel; dark yellowish brown; stiff clay; trace fine subangular chert, volcanic, and sandstone gravel. EXPLORATORY BORING LOG Page 3 / 3 PROJECT:SLO PCE DATE:3/8/22 BOREHOLE ID:B-25 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Parkview Place BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:68 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)Water SampleUSCSGraphic LogVery hard/slow drilling - end boring at 68 feet (53-54) Clayey Sand with Gravel; light brownish gray; cemented sand with stiff clay and subangular chert, volcanic, and sandstone gravel clasts. (58-59) Sand with Gravel; light brownish gray; cemented sand; subangular chert, volcanic, and sandstone gravel clasts. 55 60 65 Depth (Ft)MunsellLithologic Description (depth interval in feet) (54-58) Gravelly Clay; yellowish brown; stiff clay; subangular chert, volcanic, and sandstone gravel clasts up to 0.5 inch diameter. (59-63) Gravelly Clay; dark yellowish brown; stiff clay; subangular chert, volcanic, and sandstone gravel clasts up to 0.5-inch diameter. (63-68) Weathered Bedrock; yellowish brown; metavolcanics.0.0 10 YR 5/6 10 YR 4/6 SP CL CL SC CL (50-53) Gravelly Clay; dark yellowish brown; stiff clay; subangular chert, volcanic, and sandstone gravel clasts up to 0.5-inch diameter. 0.0 10 YR 4/6 10 YR 6/2 10 YR 5/8 10 YR 6/2 EXPLORATORY BORING LOG Page 1 / 4 PROJECT:SLO PCE DATE:3/9/22 BOREHOLE ID:B-29 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:SLO City Corp Yard BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:83 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log 0.2 0.0 0.0 0.3 (1-5) Clay with Silt trace sand; very dark brown; firm, slightly friable; trace fine sand. (5-12) Clay trace sand; dark yellowish brown; stiff, slightly calcareous clay; trace fine sand. 10 YR 5/6 CL X X 10 YR 2/2 CL 10 YR 4/4 CL 10 YR 5/4 CL 10 YR 4/6 CL 10 YR 5/4 SW 10 YR 4/6 CL 10 YR 5/6 CL (21-24) Clay trace sand; yellowish brown; firm clay; trace fine, subangular sand. (24-28) Clay trace sand; yellowish brown; soft clay; trace medium to coarse sand. (0-1) Artificial Fill; Asphalt/road base (14-15) Sandy Clay; dark yellowish brown; firm to stiff clay; mostly fine, subangular sand. (12-14) Clay with Sand; yellowish brown; firm to stiff, slightly calcareous clay; medium to coarse, subrounded sand. (18-21) Clay trace sand; dark yellowish brown; soft clay; trace medium, mostly mafic sand. First water @15 feet (15-18) Sand with Gravel; yellowish brown; medium to coarse, subrounded to subangular chert, volcanic, quartz and sandstone (fragments) sand; fine chert, volcanic, sandstone gravel.MunsellLithologic Description (depth interval in feet)Depth (Ft)10 5 15 20 0.2 0.2 25 Water SampleX EXPLORATORY BORING LOG Page 2 / 4 PROJECT:SLO PCE DATE:3/9/22 BOREHOLE ID:B-29 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:SLO City Corp Yard BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:83 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log0.0 0.0 10 YR 4/6 SC0.1 10 YR 4/6 SC 10 YR 4/6 CL 10 YR 4/6 CL 10 YR 4/6 CL 10 YR 5/6 CL 10 YR 5/6 SC 10 YR 5/6 CL 10 YR 5/6 CL 10 YR 5/6 CL (35-38) Clayey Sand with Gravel; dark yellowish brown; fine to coarse, subrounded and subangular, volcanic and metavolcanic sand; fine volcanic and metavolcanic gravel; soft clay. (24-28) Clay trace sand; yellowish brown; soft clay; trace medium to coarse sand. 10 YR 4/4 CL (33-35) Clay with Sand trace gravel; dark yellowish brown; stiff clay; fine, subrounded mostly medium to coarse volcanic sand; trace fine gravel. (31-32) Clayey Sand; yellowish brown; fine to medium, subrounded mostly mafic sand; soft clay. (29-31) Clay trace sand and gravel; yellowish brown; very soft clay; trace sand and fine gravel. (28-29) Clay trace sand and gravel; yellowish brown; stiff to hard clay; trace sand and fine gravel. (32-33) Clay trace sand; yellowish brown; soft to firm clay; trace medium sand. (42-46) Clay trace sand; dark yellowish brown; soft clay; trace fine to very fine sand (38-42) Gravelly Clay with Sand; dark yellowish brown; soft clay; subangular to subrounded volcanic metavolcanic and sandstone gravel to 0.75-inch diameter; mostly subrounded medium to coarse sand. (46-47) Clay trace sand; dark yellowish brown; hard clay; trace medium, subrounded sand. (47-50) Clayey Sand and Gravel; dark yellowish brown; fine to coarse, subangular volcanic and metavolcanic sand; fine subrounded volcanic and metavolcanic gravel. 50 Lithologic Description (depth interval in feet)Munsell35 40 45 Depth (Ft)30 0.0 Water Sample EXPLORATORY BORING LOG Page 3 / 4 PROJECT:SLO PCE DATE:3/9/22 BOREHOLE ID:B-29 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:SLO City Corp Yard BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:83 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log(70-71) Sand and Gravel; grayish brown; fine to coarse, subangular metavolcanic sand; up to 1-inch diameter, subangular shale, metavolcanic gravel. (71-75) Clay trace gravel; dark yellowish brown; hard to friable clay; trace fine, subangular, metavolcanic gravel inclusions. GC 10 YR 6/1 GC 10 YR 4/6 CL 10 YR 5/3 GC (50-51) Gravelly Clay with Sand; dark yellowish brown; stiff clay; fine, subrounded, volcanic and metavolcanic gravel; mostly coarse sand. 0.5 0.1 0.6 0.2 10 YR 4/6 SC 10 YR 5/6 GC 10 YR 5/2 GW 10 YR 4/6 10 YR 4/6 GC (69-70) Clayey Gravel trace sand; yellowish brown; up to 3-inch diameter, subangular to angular shale, metavolcanic gravel clasts; stiff clay; trace coarse sand. 10 YR 4/6 CL (51-52) Clayey Gravel with Sand; yellowish brown; subangular to angular metavolcanic gravel, mostly fine but up to 1-inch diameter; stiff clay; coase sand. (52-55) Clayey Gravel with Sand; brown; fine subrounded volcanic gravel with up to 2-inch diameter fragments of light gray sandstone; sand mostly coarse and subrounded; clay hard to friable. 10 YR 5/6 CL Lithologic Description (depth interval in feet) CL GC (55-58) Clayey Gravel with Sand; dark yellowish brown (4/6) to gray (6/1); fine, subrounded, volcanic and metavolcanic gravel with subangular to subrounded gray sandstone and weathered serpentinite clasts up to 2-inches diameter ; fine to coarse volcanic and metavolcanic sand; soft to hard clay. (58-61) Clayey Gravel with Sand; dark yellowish brown; fine, subangular volcanic and metavolcanic gravel; sand mostly coarse; firm to stiff clay. (61-63) Clayey Gravel trace sand; gray; fine subrounded, volcanic, shale and metavolcanic gravel with subangular clasts 0.5-inch to 1-inch diameter fragments of weathetred serpentinite; soft to firm clay. (63-65.5) Clay trace sand; dark yellowish brown; hard clay, softer towards end of interval; trace coarse, subangular, volcanic, metavolcanic, and shale sand. (65.5-67) Clayey Sand with Gravel; dark yellowish brown; mostly fine, some medium to coarse, subrounded, clear, white quartz sand; soft clay; shale and metalvolcanic gravel to 3- inch diameter; soft clay. (67-69) Clay with Sand and Gravel; yellowish brown; stiff clay; fine to coarse sand; fine, subangular, chert, shale, volcanic and metavolcanic gravel. 70 75 55 60 65 Depth (Ft)Munsell10 YR 4/6 10 YR 5/6 0.5 Water Sample10 YR 4/6 CL EXPLORATORY BORING LOG Page 4 / 4 PROJECT:SLO PCE DATE:3/9/22 BOREHOLE ID:B-29 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:SLO City Corp Yard BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:83 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log (78-83) Sandstone with Clay; brown; angular fragments of metavolcanic greywacke bedrock; hard to friable clay; Refusal at 83 Feet CL0.1 0.3 10 YR 4/6 CL 10 YR 5/3 Lithologic Description (depth interval in feet) (75-78) Sandy Clay trace gravel; dark yellowish brown; stiff clay; mostly coarse; subangular to angular, volcanic and metavolcanic sand; trace fine gravel.Depth (Ft)Munsell80 Water Sample EXPLORATORY BORING LOG Page 1 / 4 PROJECT:SLO PCE DATE:3/10/22 BOREHOLE ID:B-31 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Zaca Lane BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:95 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log CL (15.5-16) Clay trace gravel; dark brown; soft clay; trace fine round chert and volcanic gravel. (14-15.5) Sandy Clay; yellowish brown; hard clay; fine to medium, subrounded, clear, brown and black quartz and mafics sand; calcareous matrix. (7-14) Clay trace gravel; brown; stiff to hard clay; trace fine subangular chert and volcanic gravel. (16-19) Clay with Gravel; dark yellowish brown; stiff to hard clay; fine rounded to subrounded chert and volcanic gravel. (22-26) Clayey Gravel; dark yellowish brown; mostly fine rounded to subrounded volcanic and metavolcanic gravel clasts; very stiff clay matrix. (21-22) Sandy Clay; dark yellowish brown; stiff clay; mostly medium grained, chert and volcanic sand. X 10 YR 3/4 CL 10 YR 6/3 SP 10 YR 4/4 CL CL 10 YR 5/6 CL 10 YR 3/4 CL SP10 YR 6/3Munsell (0-2) Artifical Fill (asphalt/road base) (2-3) Clay trace sand; dark yellowish brown; soft clay; trace fine white sand. Lithologic Description (depth inteval in feet)Depth (Ft)10 5 15 20 25 X (3-5) Sand trace gravel; pale brown; fine to medium, rounded to subrounded clear, white, tan and orange quartz sand; rare chert gravel. (5-6) Clay trace sand; dark yellowish brown; firm clay; trace fine sand. (6-7) Sand; pale brown; mostly medium grained, subrounded, metavolcanic, chert and quartz sand; trace subrounded gravel. 10 YR 3/3 10 YR 4/6 10 YR 4/3 10 YR 4/6 10 YR 4/3 0.0 0.0 0.2 0.2 0.0 10 YR 4/6 First water @ 18 feet GC GC CL CL (20-21) Clayey Gravel; brown; angular granitic gravel clasts to 0.5-inch diameter. (19-20) Clay with Sand; dark yellowish brown; hard clay; coarse subangular to subrounded metavolcanic and chert sand. XWater Sample EXPLORATORY BORING LOG Page 2 / 4 PROJECT:SLO PCE DATE:3/10/22 BOREHOLE ID:B-31 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Zaca Lane BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:95 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log (43-44) Gravelley Clay trace sand; brownish yellow; firm clay; angular to subangular metavolcanic and volcanic gravel to 0.5-inch diameter; trace coasre sand. (44-51) Clay with Sand trace gravel; yellowish brown; very hard clay; mostly medium to coarse angular to subrounded volcanic, metavolcanic and chert sand; trace fine gravel. (26-27) Clayey Gravel with Sand; yellowish brown; fine subrounded metavolcanic gravel clasts; soft clay; mostly fine subrounded metavolcanic sand. (27-28) Clayey Gravel; brownish yellow; fine to rare 1-inch rounded to subrounded volcanic and metavolcanic gravel clasts; very stiff clay matrix. (28-29) Sandy Clay; brownish yellow; soft clay; fine to very fine subrounded clear and white quartz sand. (30-32) Sandy Gravel trace cobbles; brownish yellow; poorly sorted angular to subangular volcanic and metavolcanic gravel clasts to 3-inch diameter; fine to coarse angular to subangular volcanic and metavolcanic sand; trace 4-inch diameter cobble. (36-37) Clayey Gravel with Sand; yellowish brown; mostly angular chert, volcanic and metavolcanic gravel clasts to 1-inch diameter; stiff clay; coarse sand. (37-40) Clayey Sand; brownish yellow; soft clay; very fine to fine white and tan quartz sand. (40-43) Sandy Gravel with Clay; brownish yellow; fine to 1-inch subrounded to subangular chert, volcanic and metavolcanic gravel; mostly medium to coarse subrounded to subangular chert, volcanic, and metavolcanic sand; soft clay. (29-30) Clayey Sand; brownish yellow; fine to coarse metavolcanic and quartz sand; stiff clay. Lithologic Description (depth inteval in feet)Munselll10 YR 4/6 10 YR 5/6 10 YR 6/6 35 40 45 10 YR 5/4 0.5 0.3 50 10 YR 6/6 SC 0.2 10 YR 5/6 CL CL 10 YR 6/6Depth (Ft)30 SC10 YR 5/4 10 YR 6/6 GP-GC GC10 YR 5/7 GC GC GC 10 YR 6/6 CL GC 10 YR 6/7 0.2 (32-34) Clayey Gravel with Sand; yellowish brown, mostly fine, angular to subrounded chert, volcanic, metavolcanic gravel; soft clay and fine sand matrix. (34-36) Clayey Sand; yellowish brown; fine, well sorted rounded clear white and tan quartz sand; stiff clay. 10 YR 6/7 GW CLWater Sample EXPLORATORY BORING LOG Page 3 / 4 PROJECT:SLO PCE DATE:3/10/22 BOREHOLE ID:B-31 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Zaca Lane BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:95 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log(69-70) Clay with Sand; pale brown; mostly weathered serpenitine clay; fine subrounded quartz sand. (70-74) Clayey Sand with Gravel; brownish yellow; fine to coarse subrounded quartz sand; stiff clay; fine gravel. (56-58) Clayey Sand trace gravel; yellowish brown; fine to medium subrounded quartz sand; soft clay; trace subrounded gravel. (58-59) Clayey Sand with Gravel; yellowish brown; fine to medium subrounded quartz sand; stiff clay; fine subrounded gravel. (59-61) Clay trace sand; yellowish brown; very hard clay; trace fine sand. 10 YR 6/6 SC 10 YR 6/6 GC 10 YR 5/6 70 75 55 60 65 Depth (Ft)MunsellLithologic Description (depth inteval in feet) (55-56) Clayey Sand trace gravel; yellowish brown; mostly fine to medium subrounded quartz sand; stiff clay; trace subrounded fine gravel. (51-53) Clayey Sand; yellowish brown; fine to medium round to subrounded clear, brown, and orange quartz sand; soft clay. 10 YR 5/6 SC 10 YR 5/7 SC 10 YR 6/4 CL 0.1 SC 10 YR 4/6 CL 10 YR 6/3 10 YR 5/6 CL 0.0 10 YR 5/6 SC 0.1 0.0 10 YR 6/3 CL 10 YR 6/3 CL (53-55) Clay with Sand trace gravel; light yellowish brown; very stiff to hard clay; mostly fine to medium subangular quartz sand; trace coarse and and fine gravel. CL (74-75) Clayey Gravel with Sand; brownish yellow; stiff clay; up to 2-inch diameter gravel; fine to coarse subrounded quartz sand. (61-62.5) Clay with Gravel; dark yellowish brown; very hard clay; fine subrounded to subangular gravel. (62.5-63.5) Gravelly Clay; pale brown; stiff clay; up to 3-inch diameter angular weathered serpentinite gravel clasts. (63.5-69) Clay with Gravel trace sand; pale brown; hard clay; up to 1-inch diameter angular weathered serpentinite gravel clasts; trace fine to coarse sand. 10 YR 5/6 CL CL10 YR 5/6Water Sample EXPLORATORY BORING LOG Page 4 / 4 PROJECT:SLO PCE DATE:3/10/22 BOREHOLE ID:B-31 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Zaca Lane BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:95 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log Lithologic Description (depth inteval in feet) (78-81) Clayey Gravel; yellowish brown; siltstone gravel clasts to 1-inch diameter; hard clay; trace siltstone cobbles. (75-78) Gravely Clay; yellowish brown; stiff to hard clay, calclareous.10 YR 5/6 CL 10 YR 5/6 GC 0.4 0.1 80 85 Depth (Ft)Munsell90 95 Very hard/ slow drilling -end boring 95 feet Gley 6/1 Gley 7/1 Gley 8 10 YR 5/6 Gley 8 10 YR 5/6 (90.5-92) Caliche and Siltstone; white; friable calcareous caliche and siltstone, strong effervescence. (92-94.5) Clayey Sandstone; light greenish grey; soft sandy clay; angular graywacke sandstone clasts. (94.5-95) Sandstone; greenish grey; greywacke sandstone. (81-83) Clayey Siltstone and Sandstone; yellowish brown; hard clay; caclareous weathered bedrock, strong effervescence. (83-87) Clayey Siltstone and Sandstone trace Sand; yellowish brown; hard clay; caclareous weathered bedrock, strong effervescence; trace fine sand. (87-90.5) Siltstone trace clay; white; friable calcareous siltstone, strong effervescence; hard clay with caliche.Water SampleX X X X X X X X X X X X EXPLORATORY BORING LOG Page 1 / 5 PROJECT:SLO PCE DATE:3/14/22 BOREHOLE ID:B-32 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Auto Park Way BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:117.5 DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log 25 0.0 0.0 0.2 (0-2) Clayey Sand with Gravel; dark grayish brown; fine to coarse subangular chert and metavolcanic sand; mostly angular metavolcanic gravel up to 0.7-inch diameter; firm clay. (2-4) Clay trace gravel and sand; brown; hard clay; medium sand; medium volcanic and sandstone gravel. (17-18) Clay trace sand; very dark grayish brown; soft clay; trace fine sand. (18-26) Clay trace sand; very dark gray; soft to very firm clay; trace fine sand. (11-17) Clay trace sand; very dark gray; soft clay, becoming firmer over interval; trace fine sand. 10YR 3/2 CL 10 YR 3/2 CLMunsell (4-11) Clay trace sand; very dark grayish brown; soft clay; trace fine sand; organic inclusions. Lithologic Description (depth interval in feet)Depth (Ft)10 5 15 20 0.0 0.0 0.0 0.1 10 YR 4/2 SC 10 YR 4/3 CL Gley 3/CL 10YR 3/2 CLWater Sample EXPLORATORY BORING LOG Page 2 / 5 PROJECT:SLO PCE DATE:3/14/22 BOREHOLE ID:B-32 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Auto Park Way BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:117.5 DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic LogDepth (Ft)30 0.0 50 0.1 0.0 0.0 0.0 (26-28) Sandy Clay; dark yellowish brown; soft clay; very fine subrounded quartz sand. First water @ 36 feet 10YR 4/3 CL Lithologic Description (depth interval in feet)Munsell35 40 45 (42-44) Clay trace sand; brown; hard to stiff, sandy clay; trace very fine sand. (44-45) Sandy Clay trace gravel; yellowish brown; very soft clay; fine to coarse, subrounded volcanic, quartz sand; trace medium volcanic gravel. (45-47) Clayey Gravel trace sand; yellowish brown; fine to medium, subrounded and subangular volcanic gravel; soft clay; trace coarse sand. (47-51) Sandy Clay; yellowish brown; firm clay; very fine to fine, subrounded, clear and brown quartz sand. 10YR 5/4 CL 10YR 5/4 CL 10YR 5/4 GC 10YR 5/4 CL 10YR 5/4 CL (31-33) Sandy Clay; yellowish brown; soft to very soft clay; fine to very fine, subrounded quartz sand. (33-35) Sandy Clay; yellowish brown; hard clay; fine to very fune, subrounded quartz sand. 10YR 4/6 CL 10YR 5/2 (28-31) Clay trace sand; grayish brown; firm to very firm clay; trace very fine sand. 10YR 4/2 CL 10YR 3/2 CL (35-42) Clay trace sand; dark grayish brown; soft clay; trace very fine sand. CLWater Sample EXPLORATORY BORING LOG Page 3 / 5 PROJECT:SLO PCE DATE:3/14/22 BOREHOLE ID:B-32 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Auto Park Way BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:117.5 DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log55 60 65 Depth (Ft)70 75 0.0 0.1 1.4 10YR 5/6 CL 10 YR 5/6 (74-75) Gravel and Clay trace sand; brown; fine to over 1-inch diameter, subrounded volcanic gravel; very hard clay matrix; trace coarse sand.Munsell(62-65) Clay trace sand; yellowish brown; soft clay; trace very fine quartz sand. 10YR 5/4 GP 10YR 5/4 CL 10YR 5/4 GC (52-56) Clayey Gravel; brown; fine to coarse, subrounded to subangular, chert, volcanic, metavolcanic and sandstone gravel; soft clay, becoming friable and then stiff through interval. 10YR 5/3 CL GC Lithologic Description (depth interval in feet) (65-67) Clayey Sand with Gravel; yellowish brown; medium to coarse, subrounded quartz, metavolcanic sand; fine subangular metavolcanic gravel; firm clay (69-73) Clay; trace sand; yellowish brown; very hard clay, trace fine sand. 10YR 5/6 10YR 4/3 (73-74) Sandy Clay; yellowish brown; firm clay; very fine to fine sand. (56-62) Gravel with Sand trace cobbbles; yellowish brown; moderately sorted, mostly fine to medium gravel clasts to 1-inch diameter, subrounded and subangular volcanic, metavolcanic, serpentinite and sandstone gravel; medium to coarse volcanic and metavolcanic sand; trace >4-inch diameter cobbles at 62 feet depth. 10YR 5/6 CL (67-69) Gravelly Clay with Sand trace cobbles; yellowish brown; firm, fine subrounded volcanic and metavolcanic gravel; fine to coarse sand; inferred large pink granitic cobble at 68 feet. (51-52) Clayey Gravel; trace sand; yellowish brown; very fine to fine, subrounded volcanic and metavolcanic gravel; soft clay; medium to coarse, subrounded volcanic and metavolcanic sand. CL 10YR 5/6 SC CLWater SampleCL10 YR 5/6 EXPLORATORY BORING LOG Page 4 / 5 PROJECT:SLO PCE DATE:3/14/22 BOREHOLE ID:B-32 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Auto Park Way BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:117.5 DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log Depth (Ft)95 100 90 80 85 0.0 0.0 0.2 0.0 Munsell(75-79) Clay trace sand; yellowish brown; soft to firm clay; trace fine subrounded sand. (79-80) Clayey Gravel trace sand; brown to greenish gray (Gley 5GY/1); decomposed serpentinite clasts to 1.5-inch diameter, fine to coarse sand; firm clay matrix. (80-81) Gravelly Clay with Sand; dark yellowish brown; very hard clay; fine volcanic gravel; rare 1-inch serpentinite fragments; fine to coarse. (81-82.5) Sandy Gravelly Clay; dark yellowish brown; very hard clay; fine volcanic gravel; coarse volcanic sand. (82.5-84.5) Gravel with Sand and Clay; dark yellowish brown; fine, subrounded volcanic and metavolcanic gravel; mostly coarse sand; friable to hard clay. (84.5-87) Sandy Clay trace gravel; brown; very hard clay; very coarse volcanic and metavolcanic sand; trace serpentinite fragments to 0.5-inch diameter. (87-95) Sandy Clay trace gravel; dark yellowish brown; very hard to friable sandy clay; trace fine, subrounded volcanic and serpentinite gravel. 10YR 4/4 GP-GC 10YR 5/3 CL Lithologic Description (depth interval in feet) (95-98) Sandy Clay; yellowish brown; firm to stiff clay; very fine to fine, subrounded quartz sand. (98-99) Clay; dark yellowish brown; very hard clay. (99-106.5) Gravelly Clay trace sand; dark yellowish brown; stiff clay; subangular serpentinite clasts to 0.5-inch diameter; trace coarse sand.10YR 4/6 CL 10YR 5/6 CL 10YR 4/6 CL 10YR 4/6 CL 10YR 4/4 CL 10YR 4/4 CL 10YR 5/6 CL 10YR 5/3 GCWater Sample EXPLORATORY BORING LOG Page 5 / 5 PROJECT:SLO PCE DATE:3/14/22 BOREHOLE ID:B-32 SAMPLER TYPE:Sonic 4" diam. core barrel LOCATION:Auto Park Way BOREHOLE DIAMETER:6-inch DRILLING RIG:Eijkelkamp Sonic Drill FS250 TOTAL DEPTH OF HOLE:117.5 DRILLING COMPANY:Gregg Drilling LOGGED BY:A. Berge PID (ppm)USCSGraphic Log CLDepth (Ft)105 110 115 (99-106.5) Gravelly Clay trace sand; dark yellowish brown; stiff clay; subangular serpentinite clasts to 0.5-inch diameter; trace coarse sand.MunsellLithologic Description (depth interval in feet) 10YR 4/6 CL (106.5-114.5) Clay trace sand; yellowish brown; very hard clay; trace fine sand. (114.5-115) Clay trace sand; reddish brown; very hard clay; trace fine sand. (115-117.5) Metavolcanic Bedrock; black; pulverized metavolcanic bedrock, very hard angular fragments. 5YR 4/4 5YR 2/1 10YR 5/6 CLWater SampleXX EXPLORATORY BORING LOG Page 1 / 2 PROJECT:SLO PCE DATE:3/28/22 BOREHOLE ID:B-33 SAMPLER TYPE:Macrocore MC5 LOCATION:Los Osos Valley Road BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:40 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:C. Springer (WSC)PID (ppm)USCSGraphic Log SC Bedrock at 20 feet (20-28) Serpentinite and Clay (limited sample at 20 feet - no recovery through 28 feet). XDepth (Ft)XMunsell Lithologic Description (depth interval in feet) X X (0-1) Artifical Fill (asphalt/road base) (9-9.5) Sand with Clay and Gravel; yellowish brown; fine to coarse, subangular to subrounded, poorly sorted sand; fine gravel. (9.5-11) Sandy Clay; dark yellowish brown; stiff clay; fine, very well sorted sand. (11-12) Sandy Clay; brownish yellow; stiff clay; fine sand.2.4 1.3 0.7 1.2 10YR 5/6 SC10 YR 7/8 10 YR 7/4 SW XX (2-6) Sandy Silt (from CPT; no sample recovery). (1-2) Clayey Silt (from CPT; no sample recovery). (6-7) Silty Sand (from CPT; no sample recovery). 5 15 20 25 10 (7-8) Clayey Silt (from CPT; no sample recovery). (8-9) Clay (from CPT; no sample recovery). X X 10 YR 6/6 SC 10 YR 4/4 CL 10 YR 6/6 CL (12-14) Clay and Silty Clay (from CPT; no sample recovery). (14-15) Clayey Sand trace gravel; brownish yellow; coarse, very well sorted sand; hard clay; fine subangular to subrounded gravel. (15-16) Clayey Sand trace gravel; yellow; fine to coarse, sand; hard clay; fine, subrounded, well sorted gravel. X (16-20) Sand trace clay; very pale brown; coarse to fine, poorly sorted, cemented sand ; trace subrounded metavolcanic gravel.Water Sample EXPLORATORY BORING LOG Page 2 / 2 PROJECT:SLO PCE DATE:3/28/22 BOREHOLE ID:B-33 SAMPLER TYPE:Macrocore MC5 LOCATION:Los Osos Valley Road BOREHOLE DIAMETER:2.25-inch DRILLING RIG:MARL 30-ton CPT push rig TOTAL DEPTH OF HOLE:40 feet DRILLING COMPANY:Gregg Drilling LOGGED BY:C. Springer (WSC)PID (ppm)USCSGraphic Log CPT went to 45 feet. Water Sample was collected at 42 feet. Bedrock interpreted from direct push cuttings beginning at 20 feet depth (highly decomposed) becoming more competent through 45 feet. (40-45) Serpentinite and Clay (inferred - no recovery; CPT logged mostly sands and gravles, likely due to bedrock becoming more competent through refusal at 45 feet depth). X X X X Lithologic Description (depth interval in feet)MunsellX 35 40 Gley 1 7/1 to Gley 1 6/1 X X 1.2 (38-40) Serpentinite and Clay; light gray to greenish gray; highly decomposed serpentinite bedrock, waxy/greasy luster with clay and sand products.Depth (Ft)30 45 XXX 0.2 X X (20-28) Serpentinite and Clay (limited sample at 20 feet - no recovery through 20 feet; CPT logged mostly sandy silt and clay). 33-38) Serpentinite and Clay (inferred - no recovery; CPT logged mostly sandy silt and clayey silt). X (28-33) Serpentinite and Clay; light gray to greenish gray; highly decomposed serpentinite bedrock, waxy/greasy luster with clay and sand products.Water SampleGley 1 7/1 to Gley 1 6/1 Quality Assurance Project Plan Remedial Investigation Report City of San Luis Obispo | P Appendix P Quality Assurance Project Plan P Appendix F – Quality Assurance Project Plan │ i Appendix F Quality Assurance Project Plan For Proposition 1 Planning Grant Tetrachloroethylene Plume Characterization Remedial Investigation Feasibility Study Work Plan for the City of San Luis Obispo y of Pismo Beach Appendix F – Quality Assurance Project Plan │ ii Table of Contents Table of Contents .......................................................................................................................................... ii Tables ........................................................................................................................................................... iv Figures .......................................................................................................................................................... iv Attachments ................................................................................................................................................. iv 1. Introduction .......................................................................................................................................... 1 Overview and Purpose .................................................................................................................. 1 Proposed Investigation Activities .......................................................................................... 2 Proposed Groundwater Monitoring Network ...................................................................... 2 Data Quality Objectives ................................................................................................................ 3 2. Measurement and Data Acquisition ..................................................................................................... 5 Investigation Sampling .................................................................................................................. 5 Exploratory Groundwater Boring Sampling .......................................................................... 5 2.1.1.1 Depth-Discrete Groundwater Sampling ............................................................................ 6 Existing Wells Vertical Flow and Chemistry Profiling ............................................................ 6 2.1.2.1 PFAS Sample Collection and Analysis ................................................................................ 7 Groundwater Monitoring Wells .................................................................................................... 8 Monitoring Activities ............................................................................................................. 8 2.2.1.1 Water Level Measurement ............................................................................................... 8 2.2.1.2 Well Sampling ................................................................................................................... 9 2.2.1.3 Three-Volume Conventional Purge ................................................................................... 9 2.2.1.4 Low-Flow Sampling ......................................................................................................... 10 2.2.1.5 Passive Sampling ............................................................................................................. 10 2.2.1.6 Analytical Methods ......................................................................................................... 11 Documentation ........................................................................................................................... 12 Field Logbooks ..................................................................................................................... 12 Sample Documentation ...................................................................................................... 12 Sample Identification Labels ............................................................................................... 12 y of Pismo Beach Appendix F – Quality Assurance Project Plan │ iii Chain-of-Custody Record .................................................................................................... 13 2.3.4.1 Field Custody Procedures................................................................................................ 13 2.3.4.2 Transfer of Custody and Shipment of Samples ............................................................... 13 Laboratory Operations Documentation .............................................................................. 13 Laboratory Quality Assurance ..................................................................................................... 14 3. Quality Assurance ............................................................................................................................... 15 Quality Control Sampling ............................................................................................................ 15 Equipment Decontamination ...................................................................................................... 15 Equipment Maintenance and Calibration ................................................................................... 16 Water Level Meter .............................................................................................................. 16 Groundwater Sampling Equipment .................................................................................... 16 Data Assessment Procedures ...................................................................................................... 16 Precision .............................................................................................................................. 16 Accuracy .............................................................................................................................. 17 Representativeness ............................................................................................................. 17 Completeness ...................................................................................................................... 17 Compatibility ....................................................................................................................... 18 Data Quality Review ............................................................................................................ 18 Corrective Action Measures ........................................................................................................ 19 Data Handling Systems ............................................................................................................... 20 Data Validation............................................................................................................................ 20 Data Assessment ......................................................................................................................... 20 Data Reporting ............................................................................................................................ 20 4. References .......................................................................................................................................... 21 Attachment A. FGL, Inc. Quality Assurance Manual ................................................................................... 22 Attachment B. Eurofins PFAS Analysis Guide ............................................................................................. 23 y of Pismo Beach Appendix F – Quality Assurance Project Plan │ iv Tables Table 2-1 Groundwater Sample Handling Protocols Figures Figure 1-1 Project Area Attachments Attachment A FGL Inc. Quality Assurance Manual Attachment B Eurofins PFAS Analysis Guide City of San Luis Obispo Introduction Appendix F – Quality Assurance Project Plan │ 1 SECTION 1 1. Introduction The City of San Luis Obispo has a long-term goal of utilizing a multi-source water supply to meet the community’s water demand, ease the impact of droughts, and to provide resiliency. The San Luis Obispo Tetrachloroethylene Plume Characterization Project will provide the City the tools to protect its groundwater supply and expand a reliable, locally controlled drinking water source. This Quality Assurance Project Plan provides guidance to document the type and quality of data needed for environmental decisions and to describe the methods for collecting and assessing those data. Overview and Purpose This Quality Assurance Project Plan (QAPP) has been prepared for the Proposition 1 Planning Grant Tetrachlorethylene Plume Characterization Remedial Investigation Feasibility Study Work Plan (Work Plan) to address measurement, sampling, and analytical methods that are part of the Tetrachloroethylene (PCE) Plume Characterization Project (Project). This document provides a description and framework for quality assurance/quality control (QA/QC) procedures to be implemented throughout the duration of the Project to ensure that the data are scientifically valid and are of known quality that meet the established objectives. The primary purpose of the City’s PCE Plume Characterization Project (Project) is to conduct a remedial investigation/feasibility study to evaluate and develop alternatives for the clean-up (e.g., treatment) and prevention of PCE contamination in drinking water wells in the San Luis Valley area of the San Luis Obispo Valley Groundwater Basin. Long-term exposures in drinking water above the Federal and California maximum contaminant levels (MCL) of 5 micrograms per liter (μg/L) can cause adverse effects to the liver, kidneys, and central nervous system (SWRCB, 2017). The Project’s intent is to characterize the PCE plume by delineating the PCE plume’s physical extent within the Project area, measuring the concentration of PCE throughout the Basin. IN THIS SECTION Overview and Purpose Data Quality Objectives City of San Luis Obispo Introduction Appendix F – Quality Assurance Project Plan │ 2 In addition to characterizing the PCE plume, this Project will generate a toolset and database to understand and delineate the PCE contamination present in the Basin. The Project will evaluate and recommend the best implementation strategies to 1) cleanup PCE sources to benefit the community, 2) treat PCE contaminated groundwater and, 3) deliver treated water to the City’s water distribution system. A future implementation phase of the Project will increase water supply reliability for the City and enhance future water resiliency. Proposed Investigation Activities The data gap areas identified are widespread throughout the San Luis Valley area due to limited sampling in the last decade. The data collection scheme is proposed to develop a snapshot of the regional PCE plume. There may be limited access to wells owned by private entities for additional investigation. In the fringe areas of the plume that do not have wells with screened intervals penetrating to the required depths, additional exploratory borings or monitoring wells may be beneficial to determine the horizontal and vertical extents of PCE contamination. Proposed investigation activities are summarized below. • Exploratory Groundwater Borings – A total of 34 exploratory groundwater borings to evaluate the current lateral and vertical extent of the PCE plume. Depth-discrete groundwater samples will be collected at these borings to evaluate the vertical extent of PCE impacts. Results of the exploratory groundwater borings in combination with the other additional investigation methods will be used to site new monitoring wells. • Vertical Flow and Chemistry Profiling – A total of five existing wells, including the Highway 101 well, will be evaluated for vertical flow and chemical profiling to assist in the evaluation of vertical distribution of PCE. • Well Testing – The Highway 101 well will be hydraulically tested by conducting step-rate drawdown and constant-rate pumping tests to assist in determining the hydrogeologic parameters of the area. • The results of the investigation activities will be used to site permanent monitoring wells related to ongoing monitoring of the PCE plume. Furthermore, the results of the additional investigation along with monitoring results will be used for additional modeling to understand the fate and transport of the PCE plume. The results of the investigation activities will be evaluated, and a Feasibility Study/Final Report will be prepared presenting the understanding of the PCE plume to be used for wellhead treatment design. Proposed Groundwater Monitoring Network The results of the investigation activities will be used to site permanent monitoring wells to support future monitoring of the PCE plume. Furthermore, the results of the additional investigation along with monitoring results will be used for additional modeling to understand the fate and transport of the PCE City of San Luis Obispo Introduction Appendix F – Quality Assurance Project Plan │ 3 plume. The results of the investigation activities will be evaluated, and a Feasibility Study/Final Report will be prepared presenting the understanding of the PCE plume to be used for wellhead treatment planning. Data Quality Objectives The data generated throughout this Project will be used to meet project objectives stated in the Work plan. Project data quality objectives (DQOs) are provided below: • DQO 1: Groundwater depth is measured relative to surveyed ground elevation following procedures specified in Section 2.2 of this document • DQO 2: Groundwater samples are representative of formation water, as ensured by following sampling procedures defined in Section 2.2 • DQO 3: Laboratory instrument calibration and analytical detection limits, accuracy and precision align with quality control guidelines prescribed by the analytical method or laboratory City of San Luis Obispo Introduction Appendix F – Quality Assurance Project Plan │ 4 Figure 1-1 Project Area City of San Luis Obispo Measurement and Data Acquisition Appendix F – Quality Assurance Project Plan │ 5 SECTION 2 2. Measurement and Data Acquisition This Project includes a variety of activities related to the quality of the environmental data collected, including, sample collection from exploratory groundwater borings, existing well vertical profiling, and sampling of newly constructed monitoring wells. The following sections describe procedures to assure that environmental data are collected in a manner consistent with project objectives and representative of site conditions. Additional project details are provided in the Work Plan and Appendix E of the Work Plan – Monitoring and Reporting Plan. Investigation Sampling This section provides description of sampling details associated with the investigation activities described in the Work Plan. Exploratory Groundwater Boring Sampling A total of 34 exploratory groundwater borings (Figure 4-1 of the Work Plan) will be drilled and sampled to gather data to delineate the 2021 PCE plume conditions. An exploratory program is proposed prior to monitoring well construction to determine the preferred locations for monitoring water quality and groundwater levels. Each exploratory location (B-1 through B-34) will consist of up to three borings to characterize soil hydrostratigraphy and collect depth-discrete groundwater samples. Proposed depths and sampling intervals are included in Table 4-1 of the Work Plan. Proposed sampling depths and drilling methods were estimated by review of historical boring logs and regional investigations. A regional cross section that illustrates existing wells and geologic features for estimating target drilling depths is included IN THIS SECTION Investigation Sampling Groundwater Monitoring Wells Sampling Documentation City of San Luis Obispo Measurement and Data Acquisition Appendix F – Quality Assurance Project Plan │ 6 in the Work Plan (Figure 4-6). The proposed borings are oriented in transect lines intended to cross perpendicular with groundwater flow direction throughout the San Luis Valley area. Boring location rationale and 2.1.1.1 Depth-Discrete Groundwater Sampling Depth-discrete groundwater sampling - Upon completion of the CPT test and/or continuous core soil sample, the soil stratigraphy data will be reviewed to determine target groundwater sample depths. Once the groundwater sample depths are established, the driller will move the drill rig to an adjacent location (approximately 5 to 20 feet) to drill a separate boring for depth-discrete groundwater sampling. Depth-discrete groundwater sampling will be conducted using a sampler that is exposed only to the target sampling depth by use of a closed screen sampler assembly (e.g., dual-tube/wall samplers, Hydropunch™, SimulProbe®). All groundwater samples collected from the borings will be analyzed for VOCs by United States Environmental Protection Agency Method 8260B. Individual samples will be labeled by location, sample depth, date, and time, packaged securely in an ice-filled cooler as required by the anticipated laboratory requirements and analytic methods, and transported to the selected analytical laboratory following chain-of-custody procedures. A chain-of- custody document will be prepared for all samples. Custody transfers of samples will be recorded on the chain-of-custody form by signatures of the relinquisher and the receiver. This procedure will be repeated, as necessary, until final delivery is made to the analytical laboratory. Existing Wells Vertical Flow and Chemistry Profiling Several wells exist that provide opportunities for depth-specific sampling that may assist with characterizing the vertical distribution of the PCE plume. A total of five existing wells are proposed for vertical and chemical profiling as shown on Figure 4-8 of the Work Plan and as listed below: • San Luis Ranch Well No. 2 (Ambient Profiling) • CJAR Agricultural Reserve Well (Ambient Profiling) • Pacific Beach Well No. 1 (Ambient Profiling) • Highway 101 Well (Ambient and Dynamic Profiling) Vertical flow and chemistry profiling are a unique technology developed by BESST Inc. (BESST) which involves profiling the well during non-pumping static conditions. The method uses a dye tracer system developed by the U.S. Geological Survey that injects small quantities of diluted rhodamine dye solution into the well. The dye then moves with the hydraulic gradient within the well. There are two fiber optic sensors vertically situated to detect the dye once it is released into the well. One is located below the injection nozzle, and the other is positioned above the injection nozzle. These two fiber optic sensors apply laser technology to detect the time it takes for the dye to move from the injection nozzle to the sensors, which determines the velocity and direction of the flow. This velocity data coupled with depth- City of San Luis Obispo Measurement and Data Acquisition Appendix F – Quality Assurance Project Plan │ 7 dependent water quality data are used to calculate the chemical mass contribution at the depths investigated. Each sample interval associated with ambient and dynamic profiling will be analyzed for VOCs by US EPA Method 524.2. In addition, samples collected from the Pacific Beach Well, Highway 101 Well, and San Luis Ranch Well No. 2 will be analyzed for the per- and poly fluorinated-alkyl substances by Method E537.1 (12 PFAS compounds). 2.1.2.1 PFAS Sample Collection and Analysis Per- and polyfluoroalkyl substances (PFAS) are a group of synthetic chemicals that have been in use since the 1940s. PFAS are found in a wide array of consumer and industrial products. PFAS manufacturing and processing facilities, facilities using PFAS in production of other products, airports, and military installations are some of the contributors of PFAS releases into the air, soil, and water. Due to their widespread use and persistence in the environment, most people in the United States have been exposed to PFAS. There is evidence that continued exposure above specific levels to certain PFAS may lead to adverse health. PFAS sampling will be conducted in accordance with the California State Water Quality Control Board PFAS Sampling Guidelines for Non-Drinking Water (SWRQCB, 2020). Sampling materials and field supplies like plastic bags and sample containers, as well as, waterproof pens and paper, personal protective equipment, clothing, food packaging, and personal care products all have been known to contain PFAS compounds. Since PFAS are used in many traditional sampling equipment, materials, or products, and can be sources of contamination, this guidance document (SWRQCB, 2020) has divided commonly used sampling materials and field supplies into three categories: 1. Acceptable Materials: These materials are not known to be sources of PFAS cross contamination and can be used during all sampling stages and in the immediate sampling environment. 2. Staging Only Materials: These materials may contain PFAS and should not come into direct contact with the sample but can be used in the staging area. However, these materials should be used away from sample bottles and equipment, and care should be taken to thoroughly wash hands and use new gloves after handling any of these materials. 3. Prohibited Materials: These materials are known to contain PFAS that may present a threat to the integrity of the sample and should not be used during any stage of the sampling event. Sampling equipment used for PFAS sampling will be made from acceptable materials, which include high- density polyethylene (HDPE), polypropylene, silicone, stainless steel, nylon, polyvinyl chloride (PVC), acetate, and cotton. Sampling equipment that contains PFAS-based (fluoropolymers) parts that would be in direct contact with the sample or sampling environment are prohibited. City of San Luis Obispo Measurement and Data Acquisition Appendix F – Quality Assurance Project Plan │ 8 All sample containers used for PFAS sampling will come from the laboratory that is performing the PFAS analysis. HDPE or polypropylene sample bottles with Teflon®-free caps are the preferred sampling containers for PFAS sampling. PFAS may adsorb to glass containers and therefore should not be used for water, leachate, or other aqueous samples. Glass containers may be used for dry or solid samples, provided that adsorbed PFAS can be extracted by laboratory as part of the sample preparation procedure. Sample containers made from low-density polyethylene (LDPE) should not be used as PFAS are used in the manufacturing process of these containers. LDPE can be found in many sample containers including bottles and plastic bags. Groundwater Monitoring Wells We anticipate a total of 12 new groundwater monitoring wells (MW-01 through MW-12) will be installed upon completion and analysis of the investigation activities discussed in the sections above. Preliminary monitoring well locations are shown on Figure 4-9 of the Work Plan. These locations are based on our current understand of the PCE plume and hydrogeology. The results of the additional investigation along with monitoring results will be used for modeling to understand the fate and transport of the PCE plume. The following sections provide description of sampling and analytical methods that may be used to monitor the proposed wells, frequency of monitoring, and a process to make any necessary changes to the monitoring plan. Monitoring Activities This section provides description of water level measurements methods and groundwater sampling methods that may be used to monitor the proposed wells. 2.2.1.1 Water Level Measurement Groundwater levels will be measured and recorded at the new monitoring wells after construction and development are complete. Water levels Measurements will be made using a calibrated, decontaminated water level meter from the surveyed reference point (e.g. the north side of top-of-casing). Further, groundwater level measurements will be completed according to the following procedures: • Decontaminate the water level meter, following procedures in Section 2.3 • Remove the well cap • Ensure that the meter is operating properly by depressing the test button • Slowly lower the tape and weighted probe into the well until the audio alarm can be heard and the indicator light is illuminated. Read the depth directly off the tape relative to the measuring point located at the top of the well casing or other pre-determined and surveyed measuring point. • Static water level measurements will be verified by raising the probe, then lowering it again to re- measure and record the water level. Water level measurements will be recorded to the nearest 0.01 foot. City of San Luis Obispo Measurement and Data Acquisition Appendix F – Quality Assurance Project Plan │ 9 • Record the water level depth, total well depth, date, time of measurement, and measuring point in the field logbook or notes • Remove water level measurement equipment and decontaminate, following procedures in Section 2.3. 2.2.1.2 Well Sampling A groundwater sampling method will be based on final evaluation of investigation activities and final well construction design in accordance with a Work Plan addendum (if needed). Since the current conditions of the PCE plume are undefined and the final well construction design is undetermined, we propose the option of selecting a groundwater sampling method that is appropriate for the well design, average groundwater velocity, vertical distribution of contaminants, and vertical flow that will be determined as part of the investigation actives and final well construction. The most likely groundwater sampling methods are 1) three-volume conventional purge, 2) low-flow sampling, and 3) passive sampling as described below. Below are descriptions for each of these groundwater sampling methods. 2.2.1.3 Three-Volume Conventional Purge The three-volume conventional purge method involves collecting water samples after purging a minimum three casing volumes of water from the well using a submersible pump and when the following field parameters indicate that groundwater conditions have stabilized, as described below: • pH (+/-0.1 units) • temperature (+/- 5 percent) • specific electrical conductivity (+/- 3 percent) • oxidation-reduction potential (+/-10 millivolts) • dissolved oxygen (+/-0.3 milligrams per liter) • turbidity (+/-10 percent when greater than 10 nephelometric turbidity units). One casing volume is to be calculated by the following equation. Casing volume gallons = π r2 h x 7.48 gallons per cubic foot where: r = well radius (feet) h= water column height (feet) To measure the volume of water being removed from the well, a flowmeter or timing a known flow rate from a given well will be used. Water samples will be collected from each well casing after purging three casing volumes, by decreasing the pumping speed and collecting a sample from the discharge line. Sample City of San Luis Obispo Measurement and Data Acquisition Appendix F – Quality Assurance Project Plan │ 10 collection personnel will wear clean nitrile gloves and will not touch the mouth of the discharge line, the top of the cap, the lip of the bottle, or the inside of the cap. Samples will be handled following the procedures described in Section 2.4 and Appendix F Quality Assurance Project Plan of the Work Plan. 2.2.1.4 Low-Flow Sampling Low-flow purging and sampling involves extracting groundwater at rates comparable to ambient groundwater flow (typically less than 500 milliliters per minute), so that the drawdown of the water level is minimized, and the mixing of stagnant water with water from the screened intake area in a well is reduced. Low-flow sampling typically follows US EPA standard operating procedure 540/S-95/504. The general low-flow sampling process is as follows: a) Measure and record the water level in the well before installing the pump b) Install pump - Lower pump, safety cable, tubing, and electrical lines slowly (to minimize disturbance) into the well to the appropriate depth c) Let the water column stabilize and measure water level before starting pump d) Purge well - Start the pump at low speed and slowly increase the speed until discharge occurs. adjust pump speed until there is little or no water level drawdown. Monitor and record the water level and pumping rate every five minutes (or as appropriate) during purging e) Monitor field parameters – the tubing emerging from the well should be connected to a flow- through cell to monitor the indicator field parameters (see section 2.2.1.3 for field parameters and stabilization criteria). Stabilization of parameters (Section 2.2.1.3) and turbidity of the purged water are monitored before a sample is taken, thus low flow methods facilitate equilibrium with the surrounding formation and produce samples that are generally representative of the formation water. Groundwater samples are collected by disconnecting the tubing from the flow-through cell and collecting the sample in laboratory provided containers directly from the discharge tubing. 2.2.1.5 Passive Sampling Passive sampling is typically defined as method that can acquire a sample from a discrete location without the active transport induced by pumping or purge techniques. These passive technologies such as, but not limited to, passive diffusion bags, HydraSleeve™, and Snap Sampler™ rely on the sampling device being exposed to groundwater in ambient equilibrium. Selection of a passive sampling technique is based on a detailed and explicit formulation of the data quality objectives and end use of the data, together with a thorough understanding of the characteristics fundamental to each sampling technology. Sampling methods best able to meet the specific objectives at the lowest cost can then be identified during the sampler deployment period. City of San Luis Obispo Measurement and Data Acquisition Appendix F – Quality Assurance Project Plan │ 11 Therefore, we do not elaborate on a specific passive sampling method to be used for this Project. The water quality, well design, average groundwater velocity, vertical distribution of contaminants, and vertical flow are relatively unknown for the region, let alone a specific well. Upon completion of the investigation activities a sampling method will be selected, and if a passive sampling technique is selected for the newly installed monitoring wells the justification, rationale, and detailed procedures will be presented in Work Plan addendum. 2.2.1.6 Analytical Methods Based on our current understanding of the PCE plume, groundwater samples will be collected from the monitoring wells for analysis of VOCs by EPA Method 8260B and general minerals and metals to assist in the evaluation of natural degradation of PCE. Groundwater sample handling protocols are presented in Table 2-1 below. Table 2-1 Groundwater Sample Handling Protocols Analysis Methods Hold Time Container Preservation Requirements VOCs EPA 8260B 14 days Three 40 ml glass vials HCl Aluminum EPA 200.7 6 months (Mercury 28 Days) 500 ml Plastic HNO3 (pH≤2) Antimony Arsenic Barium Beryllium Boron Cadmium Chromium Copper Fluoride Iron Manganese Mercury Nickel Selenium Nitrate + Nitrite EPA 300.0 48 hours 250 ml Plastic No Preservative Nitrate as Nitrogen Total Dissolved Solids SM 2540 7 days 500 ml Plastic No Preservative Chloride EPA 300.0 28 days 250 ml Plastic No Preservative Sulfate EPA 300.0 48 hours 250 ml Plastic No Preservative Notes: ml milliliters EPA Environmental Protection Agency City of San Luis Obispo Measurement and Data Acquisition Appendix F – Quality Assurance Project Plan │ 12 Documentation Sample collection for analytical data will be documented using field logbooks and chain-of-custody forms. Applicable data will be uploaded to SWRCB’s GeoTracker throughout the duration of the Project as appropriate and retained for presentation in the final Remedial Investigation Report. Field Logbooks A field logbook will be maintained during this Project and will include a record of personnel present, study area conditions, and significant events. Calibration records for field equipment will be maintained in a separate logbook, as needed. All entries will be signed and dated, and the field logbook will be kept as a permanent record. Sample Documentation Sample documentation procedures have been established to assure control of samples during collection, transportation, and storage. Sample documentation during field activities includes preparation of sample identification documents so that sample identification and chain-of-custody can be maintained, and sample disposition can be controlled. The following sample identification documents will be used: • Sample identification labels • Custody seals (when shipped by common carrier) • Chain-of-custody records, including analyses requested Chain-of-custody forms will contain, but not be limited to, the following information: • Sample location identification • Project name or code • Date and time sample was collected • Sampling personnel • Shipping method and date (if applicable) • Sample description • Sample matrix • Sample volume and number of containers • Sample destination (if applicable) • Preservatives used (if applicable) • Analyses to be performed • Special handling procedures (if applicable). Sample Identification Labels Adhesive sample identification labels will be secured to the sample containers by the field sampler. Sample documentation forms and portions of the labels that are not pre-printed will be filled out using waterproof ink. Sample labels will include the following information: City of San Luis Obispo Measurement and Data Acquisition Appendix F – Quality Assurance Project Plan │ 13 • Site name • Sample location • Sample collection date and time • Preservatives used (if applicable) • Sampler initials Chain-of-Custody Record Sample custody will be maintained and documented from the time of sample collection to delivery at the laboratory. Samples will be tracked by the laboratory and included in the presentation of analytical results within the final laboratory report. The chain-of-custody record will document the transfer of samples from the sampling personnel to the analytical laboratory personnel and will detail the analyses requested for each sample. 2.3.4.1 Field Custody Procedures The field sampler will be personally responsible for sample care and custody from the time of sample collection until the time of sample transfer or shipment to the laboratory. The sampler will properly seal shipping containers if necessary, to assure sample integrity during shipment to the laboratory. 2.3.4.2 Transfer of Custody and Shipment of Samples The chain-of-custody record will be used to document transfer of custody. When transferring samples, the individuals relinquishing and receiving the sample will sign, date, and note the time on the chain-of- custody record If shipping is required, samples will be properly packaged for shipment in accordance with U.S. Department of Transportation regulations and will be dispatched to the designated laboratory for analysis with a separate, properly completed chain-of-custody record accompanying each shipment. Adhesive custody seals will be secured over the opening of the shipping containers when shipped by common carrier. Sealing of shipping containers (coolers) is not necessary if the sampler is always in custody of the container up to the point of delivery to the laboratory. Each shipment will be accompanied by the chain-of-custody record identifying the samples and indicating analyses requested. The original chain-of-custody will be sent to the laboratory designated on the chain-of-custody record. Once received at the laboratory, laboratory custody procedures will apply. At that point, it is the laboratory’s responsibility to acknowledge receipt of samples and verify that the sample containers have not been damaged. It is then the laboratory’s responsibility to maintain custody records throughout sample preparation and analysis. Laboratory Operations Documentation The State of California Certified analytical laboratory will provide electronic data deliverables in accordance with the requirements for SWRCB GeoTracker upload. Supporting QC documentation that will be evaluated for each analytical report shall include the following major items: sample holding times, method blanks, matrix spike/matrix spike duplicate (MS/MSD) recoveries, relative percent difference between MS and MSD, laboratory control sample recoveries, and surrogate spike recoveries. City of San Luis Obispo Measurement and Data Acquisition Appendix F – Quality Assurance Project Plan │ 14 Laboratory Quality Assurance The contract laboratory for this Project will be selected upon vendor agreement developments and further evaluations. For the purposes of preparing this QAPP, a quality assurance manual for Fruit Growers Laboratory, Inc., a laboratory commonly used by City of San Luis Obispo, dated April 30, 2020, is provided in Appendix B to support the quality assurance and control documentation in this QAPP. In addition, a Eurofins Laboratory Inc. (Eurofins) sampling guide is provided in Appendix B to support PFAS documentation. Eurofins is a reputable laboratory that specializes in PFAS sampling throughout the United States including analysis of PFAS sampling in the San Luis Groundwater Basin area. City of San Luis Obispo Quality Assurance Appendix F – Quality Assurance Project Plan │ 15 SECTION 3 3. Quality Assurance The data generated throughout this Project will be used to meet project DQOs, defined in Section 1. To confirm that samples are collected and analyzed in a manner consistent with project objectives and are representative of field conditions, the following sections establish quality assurance and control procedures applicable to data collection, database storage and report preparation. Quality Control Sampling Quality control (QC) sampling will be conducted both by samplers in the field and by the laboratory. Field QC samples include Field Duplicates (FD) and Travel Blanks. QC samples will be collected according to the following procedures: • Collect one blind FD sample at the rate of one sample per week or ten percent of the samples collected, whichever is greater. The purpose of the FD is to determine the precision of field sampling and laboratory analysis techniques • Travel blanks (trip blanks), which are laboratory-supplied deionized water samples in VOAs, will be transported with the empty sample containers to the field, retained with the sample containers during sampling, and returned with the sample containers to the laboratory at the rate of one trip blank per cooler of samples for analysis. The VOA trip blank is not to be opened during the sampling activities. The purpose of the trip blank is to provide information regarding potential sample contamination from sample transport and site conditions • Identify duplicate and blank samples in the same manner as other samples. Identifiers will be determined prior to the sampling event. Equipment Decontamination All field equipment that will encounter groundwater will be decontaminated prior to use. The decontamination protocol includes washing equipment with non-phosphate detergent, followed by a IN THIS SECTION Quality Control Data Assessment Procedures Data Validation, Assessment, and Reporting City of San Luis Obispo Quality Assurance Appendix F – Quality Assurance Project Plan │ 16 potable water rinse and a laboratory-grade deionized water rinse. Such equipment to be decontaminated includes, but is not limited to water level meters, water quality meters, and submersible pumps. Equipment Maintenance and Calibration Water level meters and water quality meters will be calibrated and inspected prior to use each day to ensure proper operation according to the equipment manufacturer’s specifications. Calibration times and results will be recorded in a field logbook or notes used specifically for equipment calibration. Water Level Meter The cables and tapes on water level probes may become stretched or kinked over time; therefore, the marked intervals on the probe tapes may be calibrated with a new tape measure prior to the start of work. Daily preparations for work may include checking battery-powered alarms and replacing or repairing kinked or otherwise damaged signal tapes or cables on electronic probes. Groundwater Sampling Equipment Water quality field meters may be calibrated according to the manufacturer’s specifications each day of use in the field or once every ten samples, whichever occurs first. Calibration of all instruments and measurements shall be performed so that standards are used that bracket the expected range of the sample and/or in accordance with manufacturer’s specifications. Data Assessment Procedures Field and analytical data may be reviewed during data assessment activities to assure that QC criteria have been met according to the DQOs established for the respective activity. Throughout field activities, routine data assessment procedures may be used to assess the precision, accuracy, representativeness, completeness, and comparability of the data depending on the DQO for the sampling activity. Data assessment procedures used to evaluate these parameters are described below. Precision Precision is a measure of the agreement or reproducibility among replicate measurements (EPA, 1989). It can be expressed as the relative percent difference (RPD) between duplicates of the same sample. Duplicates consist of internal laboratory duplicates and external field duplicates. Internal laboratory duplicates include sample duplicates and/or matrix spike duplicates, depending on the analytical method. Analytical results from field duplicate samples provide data on field measurement precision. Analytical results from laboratory duplicates and laboratory matrix spike duplicates provide data on laboratory precision. The RPD between duplicate sample results is calculated using the following equation: RPD = 2(D1-D2)/(D1+D2) x 100 where: RPD = Relative percent difference City of San Luis Obispo Quality Assurance Appendix F – Quality Assurance Project Plan │ 17 D1 = First sample value D2 = Second sample value (duplicate sample). Accuracy Accuracy is the degree of agreement of a measured value with an accepted reference or true value (EPA, 1989). Accuracy can be expressed numerically as the percent recovery of a spiked sample. A sample spike is prepared in the laboratory by adding a known concentration of one or several compounds to the environmental sample. The compounds spiked are chosen from the list of analytes detectable by the method being evaluated. Analytical results from spiked samples provide data on matrix interferences. Accuracy for the analytical measurement system utilizes laboratory QC samples and is defined as the percent recovery of a spiked sample. The percent recovery is calculated as follows: P = (A-B) x 100 / C where: P = Percent recovery A = Measured concentration in spiked sample (sample + spike) B = Measured concentration in sample; and C = Known concentration of spike compound. Validation guidelines presented in USEPA 1988a and 1988b may be used to determine the potential effect on data quality of blank contamination. Data associated with unacceptable blank results may be qualified and recommendations for corrective actions may be discussed with the laboratory and field personnel as appropriate. Representativeness Representativeness is the reliability with which a measurement or measurement system reflects the true conditions under investigation (EPA, 1989). Representativeness is influenced by the number and location of the sampling points, sampling timing and frequency of monitoring efforts, and by the field and laboratory sampling procedures (EPA, 1989). Data will be obtained from sampling activities, as described in the Work Plan. If data appear to deviate from an anticipated trend, further investigations into the collection methodology and QA/QC procedures will be initiated to resolve the questionable data point. Pending the conclusion of these evaluations, the data point may either be accepted with a high or low level of confidence or be rejected. Completeness Completeness is defined as the comparison of the number of valid data points obtained from a measurement effort to the total number needed to meet the project goals (EPA, 1989). Data completeness incorporates the factors of sample loss and data acceptability (EPA, 1989). City of San Luis Obispo Quality Assurance Appendix F – Quality Assurance Project Plan │ 18 Criteria for incomplete or unacceptable results may include vials broken in shipment or at the laboratory and data qualified as unusable during data assessment or data review. Analytical data completeness is calculated using the follow equation: C = (number of acceptable results) x 100/total number of requested results where C = Percent completeness. Analytical data completeness is described as the ratio of acceptable analytical results to the total number of results requested. A completeness value of less than 90 percent indicates that corrective action is necessary to limit the number of incomplete or unacceptable results and to avoid similar problems in future sampling events. Notifications of unacceptable completeness will be documented and discussed in the final Remedial Investigation Report, if applicable. Compatibility Comparability is a qualitative parameter expressing the confidence with which one data set can be compared to another (EPA, 1989). Comparability is dependent upon consistency in sampling conditions and selection of sampling procedures, sample preservation methods, analytical methods, and units of data expression (EPA, 1989). Data Quality Review Review of data quality will be performed under the supervision of the Project field or technical manager. Laboratories will submit additional QA/QC data to enable the reviewer to validate the analytical data, if necessary. The QC Summary for analytical support may include the following, as appropriate: • Initial and continuing calibration procedures • Instrument performance results • Reagent blank, surrogate, spike, laboratory duplicate, control standard, and interference check sample results • Review of chromatograms • Review of calculations and documentation procedures • Raw data including chromatograms and quantitation reports • Review of chain-of-custody records • Review of holding times • Review of trip blank and field duplicate results • Review of laboratory method blank, MS, MSD, and LCS results Data review results will be used to "flag" questionable analytical results, to request revised analytical data reports from the laboratory, and to notify the laboratory and/or field personnel to initiate corrective actions. City of San Luis Obispo Quality Assurance Appendix F – Quality Assurance Project Plan │ 19 The results of data review, including the activities described above and any data qualifications, will be compiled for the Project. The data review results will be used to determine if any data require qualification due to failure to comply with field or analytical QA/QC requirements. Corrective Action Measures Corrective actions may be implemented if it is determined during the data quality assessment and review process that field procedures and documentation, analytical procedures, or analytical results are not adequate to achieve the DQOs presented herein. Corrective actions which may be implemented include altering procedures in the field, providing additional training for field personnel, using a different batch of sample containers, increasing the frequency of calibration and maintenance for field measurement instruments, resampling or reanalyzing samples, contacting the laboratory to initiate specific corrective actions, or auditing laboratory procedures. The field or technical manager may initiate corrective actions for field activities and will be responsible for assuring that corrective actions for laboratory activities are initiated, approving field corrective actions, and assuring that the corrective actions are adequate to meet DQOs. Should field measurement data or analytical results indicate inconsistencies; the following corrective actions may be implemented: • The conductivity meter may be recalibrated if periodic checks on its calibration indicate that electrical conductivity (EC) readings vary more than 10 percent from the concentration of the calibration standard. The integrity of the EC probe and possible degradation of the EC standard solutions may also be evaluated • The pH meter may be recalibrated if periodic pH buffer solution readings vary by more than 0.5 pH units from the pH of the original buffer solution used to calibrate the probe. The integrity of the pH probe and possible degradation of the pH buffer solutions may also be evaluated • The dissolved oxygen meter and turbidity meter may be calibrated according to manufacturer’s specifications. If calibration/recalibration of the instruments cannot be attained to manufacturers’ specifications, the integrity of the instrument, probe, and standard solutions where appropriate, may be evaluated • Thermometers and temperature probes may be checked against other thermometers prior to field work. Thermometers which vary more than 5°C from the readings of other thermometers may be replaced • Sampling and decontamination procedures may be reviewed if analytical results of field duplicate samples indicate poor precision or if concentrations of compounds or constituents in trip blanks exceed documented laboratory contaminant levels. Laboratory corrective actions may be initiated if during the data quality assessment and review process, analytical procedures or results are not adequate to achieve project DQOs. The laboratory may be contacted to discuss appropriate corrective actions. City of San Luis Obispo Quality Assurance Appendix F – Quality Assurance Project Plan │ 20 Further, all implemented corrective action measures will be described in the final Remedial Investigation Report, including the conditions leading to the need for corrective action and an assessment of the measure’s effectiveness. Data Handling Systems The following sections describe the process for handling data in terms of data generation, review, and routing for field sampling data. The procedures identified in previous sections describe the recording of measurements onto data collection forms. This section discusses the monitoring and controls established to track field data through the following events: • Field form completion • Field review and correction Data Validation Data validation may be performed on every work order. This will include the review of analytical results, associated laboratory internal QC data and field QC data reported by the analytical laboratory. All data generated may be assessed for precision, accuracy, representativeness, comparability, and completeness parameters. Data Assessment Data quality may be assessed in terms of precision, accuracy, representativeness, comparability (fitting ongoing trends), and completeness. The first two are assessed in quantitative terms, while the latter three are generally expressed as qualitative characteristics. Data Reporting Laboratory measurements may be recorded in standard formats that specify site location, sample identification, date, matrix parameter, parameter value, and detection limit. Laboratory and field data may be combined and summarized in final tables and graphs that are appropriate to the type of data and convey information to support the findings of the data collection program. In all cases, data will be clearly tabulated and presented in a consistent way to facilitate the comparison of common sets of data. City of San Luis Obispo References Appendix F – Quality Assurance Project Plan │ 21 SECTION 5 4. References California State Water Quality Control Board (SWQCB). Per- and Polyfluoroalkyl Substances (PFAS) Sampling Guidelines for Non-Drinking Water. Division of Water Quality. 2020. USEPA, 1988a. Laboratory Data Validation Functional Guidelines for Evaluating Organics Analyses: Prepared for the Hazardous Site Evaluation Division U.S. Environmental Protection Agency, February 1988. USEPA, 1988b. Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses: Prepared for the Hazardous Site Evaluation Division U.S. Environmental Protection Agency, April 1988. USEPA, 1989. U.S. Environmental Protection Agency Region 9 Guidance for Preparing Quality Assurance Project Plans for Superfund Remedial Projects. Document Control No. 9QA-03-89; September 1989. City of San Luis Obispo Attachment A. FGL, Inc. Quality Assurance Manual Appendix F – Quality Assurance Project Plan │ 22 Attachment A. FGL, Inc. Quality Assurance Manual City of San Luis Obispo Attachment B. Eurofins PFAS Analysis Guide Appendix F – Quality Assurance Project Plan │ 23 Attachment B. Eurofins PFAS Analysis Guide PFAS Analysis What are PFAS Compounds? Per- and Polyfluorinated Alkyl Substances (PFAS) are a large group of manufactured compounds that are used in a wide range of industrial and consumer applications. PFAS are also the principle components in Aqueous Film Forming Foams (AFFF) firefighting products that meet military specifications. PFAS compounds are used to repel oil and water in textile products like clothing, carpeting and furniture, as well as in food packaging and in the manufacture of fluoropolymers used in non-stick cookware. Some of the unique chemical characteristics that make PFAS compounds attractive for use in surface coatings also render them resistant to biodegradation in the environment. Therefore, PFAS compounds are persistent and have been shown to bioaccumilate in humans and wildlife. PFAS compounds have been found throughout the environment in groundwater, surface water, soil and sediment. Studies have shown detections of PFAS in air, biota and food. Per-and Polyfluorinated Alkyl Substances (PFAS) Leading the Industry in PFAS Analysis When dealing with contaminants of emerging concern, it is vital that you work with an experienced laboratory capable of providing defensible data, especially due to the lack of EPA standard methods. Utilizing industry-leading practices, Eurofins not only has dedicated laboratory space and instrumentation for PFAS analysis, but also dedicated teams who provide the highest quality results each and every time. These teams provide an unmatched level of experience, and a capacity to analyze tens of thousands of PFAS samples per month. PFAS methodologies and regulations are continually evolving as additional compounds are identified and states continue to expand their testing requirements for these contaminants. With our dedicated teams, Eurofins is able to offer you the flexibility to develop and adapt to the continually changing analytical needs. Eurofins offers you: The ability to test a wide range of matrices for up to 75 PFAS compounds. 70 PFAS are supported from a single LCMSMS analysis with 5 FTOH PFAS supported by GC/MS/MS analysis. North America’s largest capacity with 37 instruments dedicated to PFAS analysis and a throughput of 40,000 samples per month. The use of gold-standard methods including isotope dilution, as well as EPA 537.1 and 533 for drinking water analysis. Dedicated sample preparation and cleanup space minimizing the chance of cross-contamination. Two laboratories dedicated to drinking water analyses that have been analyzing PFAS for over 10 years as well as additional drinking water testing capacity throughout our network of laboratories. Analysis for GenX and other perfluoroether carboxylic acids (PFECA) used as replacement compounds. Analytical results that meet or exceed current regulatory and advisory limits. Multiple accreditations including DoD QSM, ISO 17025, NELAC and various state-specific programs. Capabilities and Capacity Eurofins is a global leader in providing innovative and high-quality environmental analytical laboratory services. Our PFAS laboratories, located in Lancaster, Pennsylvania; Denver, Colorado; South Bend, Indiana; Monrovia and Sacramento, California; Burlington, Vermont; and Knoxville, Tennessee are equipped with state-of-the-art technology and instrumentation. With thousands of employees dedicated to environmental testing, Eurofins has the capacity and financial stability to meet your project needs. We perform PFAS analysis on a variety of environmental matrices including: We use state-of-the-art LC/MS/MS instrumentation in support of trace-level reporting of PFAS contaminants as well as GC/MS/MS for the analysis of other emerging contaminants. Within our isolated PFAS laboratories, we run numerous dedicated systems over multiple shifts, giving us unmatched capacity for any project size. We have optimized our systems so that the data reported to you meets or exceeds all of the current regulatory or Health Advisory limits. We offer several analytical methods to meet state, federal and DoD criteria. The isotope dilution method can be utilized when testing potable water, non-potable water, soil/sediment, tissue and nontraditional matrices. For drinking water, we support EPA methods 537 and 533, without modification. To accommodate unique project reporting requirements, data can be provided in a client specific Data Deliverable format as well as a Level II, III or IV data package. In accordance with the EPA’s September 2016 Technical Advisory and EPA method 537.1, Eurofins includes branched/linear isomers in the quantification of PFOA, PFOS, PFHxS, NEtFOSAA and NMeFOSAA. While a technical grade standard of PFOA is analyzed with each initial calibration for a qualitative reference and identification, branched/linear isomers are in the calibration for PFOS, PFHxS, NEtFOSAA and NMeFOSAA. Our depth of knowledge, redundancy of systems and state-of-the-art facilities are key to our success in supporting the PFAS market. Eurofins’ reinvestment in the business ensures that we continue to offer highly sensitive methods, low reporting limits and compliance with method protocols meeting regulatory guidance over the duration of the client program. orange fabric air drinking water groundwater wastewater soil sediment leachate tissue biosolids consumer products AFFF Emulsions and Fluoropolymer Dispersions Food, Feed and Agricultural Products Blood/Serum Drinking Water Analysis Eurofins has the largest potable water testing laboratory in the United States, serving water quality professionals throughout the United States and in more than 100 countries worldwide. Eurofins’ two drinking water laboratories serve more than 7,000 state and local municipalities as well as bottlers, engineering firms, consultants and federal agencies such as the EPA and U.S. Military. Eurofins is drinking water certified or approved in all 50 states and territories, and we support EPA methods 537.1 and 533, without modification. Advanced Analytical and Forensic Tools: TOF, TOP Assay, Branched/Linear Isomers, and Non-Target Analysis Current analytical methodologies measure a discrete list of 40 PFAS compounds on average. Many additional PFAS are not determined as discrete compounds by existing commercial methods, therefore we may be underestimating the PFAS mass present in the environment. As the investigation and treatment of sites contaminated with PFAS matures, there is a growing interest in determining the contributions of different sources to the overall contamination and understanding the true mass of PFAS present. Eurofins has implemented several tools that illuminate additional pieces of the PFAS puzzle. AFFF impacted samples analyzed by the TOP Assay have been shown to reveal an additional mass of PFAS compounds that can comprise of up to 70% of the fluorinated organics in the sample. The combination of the TOP analysis and the standard suite of PFAS compounds can give a more complete characterization of the PFAS contamination present. Total Oxidizable Precursors (TOP) Assay Total Organofluorine (TOF) Extensive Compound List Linear/Branched/Total PFAS Non-Targeted Analysis (NTA) Water, soil, and sediment are treated with persulfate, hydroxide and heat to create a hydroxyl radical oxidation. An initial aliquot of each sample is analyzed for a suite of targeted PFAS compounds. Then a second portion of the sample is oxidized. When the oxidation is complete, the oxidized portion is extracted in the normal fashion for the same suite of PFAS compounds and then compared to the initial analysis. Increases in the concentrations in the Perfluorocarboxylic Acids (PFCAs) indicate the presence of oxidizable precursors which constitutes a portion of the hidden mass. Achievable detection limits are in the part per trillion (ppt) range. The determination of total organic fluorine approaches quantitation of the unknown mass of PFAS from the angle of the fluorine content of a sample. With the use of combustion ion chromatography (CIC) a wide range of matrices are analyzed for Total Organic Fluorine (TOF), Total Absorbable Organofluorine (AOF) in water, or Extractable Organic Fluorine (EOF) in solids. Achievable detection limits are in the part per billion (ppb) range. As AFFF and other PFAS sources have changed vendors and formulations over the years, the concentration and composition of PFAS in those products has also changed. As the number of targeted compounds increases, the likelihood of a unique identification increases. This is not to say that increasing from a list of 30 PFAS to a list of 70 PFAS will elucidate a point source, only increase the potential for additional and unique positive identifications. Achievable detection limits are in the part per trillion (ppt) range. Separate results of the linear isomer and the sum of branched PFAS isomers for PFOA, PFOS, PFHxS, MeFOSAA, and EtFOSAA are possible. There are two main processes in which PFAS are created: Electrochemical and Telomerization. The electrochemical process produces both linear and branched isomers, but all are saturated, meaning that every carbon in the backbone is only bonded to another carbon and fluorine. The telomerization process results in mixed saturation but linear isomers only. These data reported separately can yield more information than a single value would. While a long compound list and the ability to differentiate linear and branched isomers are powerful tools, there are estimated to be thousands of PFAS in-use or with legacy usage. As there are only analytical standards for a fraction of these compounds, additional instrumentation is needed to identify PFAS without commercially available standards. This task is best suited for Quadrupole-Time-Of-Flight Mass Spectrometry (QTOF-MS). This data results in exact mass, capable of matching identified compounds to a library of exact mass spectra (unique fragments of the original compound). Eurofins has recently expanded our PFAS library from 300 compounds to ~2400 compounds. This allows for unknown compounds to be identified with chemical formula, name, and CAS number. Sampling Preservatives and Bottles Matrix Container/Preservation Method Potable Water 2 x 250mL Plastic/ ammonium acetate EPA 533 Potable Water 2 x 250mL Plastic/Trizma EPA 537.1 Aqueous 2 x 250mL Plastic/ none 537 Isotope Dilution Aqueous (DOD)2 x 250mL Plastic/ none 537 Isotope Dilution QSM 5.1 table B-15 TOP in Water (Pre-Oxidation)3 x 250mL Plastic/ none 537 Isotope Dilution TOP in Water (Post-Oxidation)3 x 250mL Plastic/ none 537 Isotope Dilution Solid 1 x 125mL Plastic/ none 537 Isotope Dilution Solid (DOD)1 x 125mL Plastic/ none 537 Isotope Dilution QSM 5.1 table B-15 AFFF 1 x 250mL Plastic/ none 537 Isotope Dilution Eurofins provides sample collection bottles made of high-density polyethylene plastic (HDPE) and lids that are free of Teflon™ lining. PFAS Certifications & Accreditations Eurofins is accredited in each state, where certification is offered, for method(s) of PFAS Analysis. Our laboratories hold certification with the Department of Defense (DoD) ELAP program and state accreditations for per- and polyfluorinated chemical analysis that follow QSM Table B15 protocol. Note: Certifications are subject to change. Last updated: 2/2021 www.EurofinsPFAS.com Eurofins Locations for PFAS Analysis Eurofins Eaton Analytical Monrovia, CA and South Bend, IN PFAS in drinking water Largest drinking water lab in the country Backup capacity between two labs to accommodate project schedules NELAP / ISO 17025 accredited Eurofins TestAmerica West Sacramento, CA; Denver, CO; Burlington, VT; Knoxville, TN PFAS in drinking water, groundwater, wastewater, soil, sediment, tissue, blood/serum, biosolids, AFFF, consumer products and air DoD / NELAP / ISO 17025 accredited Total Oxidizable Precursors (TOP) Assay Non-Target Analysis (NTA)9082 0221Eurofins Lancaster Laboratories Environmental Lancaster, PA Eurofins Lancaster Laboratories Environmental Lancaster, PA PFAS in drinking water, groundwater, wastewater, soil, sediment, tissue, biosolids, AFFF, milk, food and vegetation and consumer products DoD / NELAP / ISO 17025 accredited Total Oxidizable Precursors (TOP) Assay Total Organic Fluorine (TOF) Analysis Non-Target Analysis (NTA)