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HomeMy WebLinkAbout2023-01-20_Avila Ranch_SWPPP_Risk 2_signedSTORMWATER POLLUTION PREVENTION PLAN for AVILA RANCH – PHASES 2, 3, 4, 5 & 6 MASS GRADING RISK LEVEL 2 Legally Responsible Person: Joshua Peterson Avila Ranch Developers, Inc. 2505 Alluvial Avenue Clovis, CA 93611 559-432-8181 Project Address: 175 Venture Drive San Luis Obispo, CA Prepared by: Wallace Group 612 Clarion Court San Luis Obispo, CA 93401 Rachel Hawthorne, Cert. # 00287 SWPPP Preparation Date January 2023 WDID#: ________________ Estimated Project Construction Dates: Start of Construction April 15, 2023 Completion of Construction December 31, 2026 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP i JANUARY 2023 Table of Contents Table of Contents ...................................................................................................................... i Qualified SWPPP Developer .................................................................................................... 1 Legally Responsible Person ................................................................................................... 2 Amendment Log ....................................................................................................................... 3 Section 1. SWPPP Requirements ...................................................................................... 4 1.1. Introduction ................................................................................................................. 4 1.2. Permit Registration Documents .................................................................................. 4 1.3. SWPPP Availability and Implementation ..................................................................... 5 1.4. SWPPP Amendments ................................................................................................. 5 1.5. Retention of Records .................................................................................................. 6 1.6. Required Non-Compliance Reporting ......................................................................... 6 1.7. Annual Report............................................................................................................. 7 1.8. Changes to Permit Coverage ...................................................................................... 7 1.9. Notice of Termination .................................................................................................. 7 Section 2. Project Information ........................................................................................... 9 2.1. Project and Site Description ........................................................................................ 9 2.1.1. Site Description ................................................................................................... 9 2.1.2. Existing Conditions ............................................................................................. 9 2.1.3. Existing Drainage ................................................................................................ 9 2.1.4. Geology and Groundwater .................................................................................. 9 2.1.5. Project Description .............................................................................................10 2.1.6. Developed Condition ..........................................................................................10 2.2. Permits and Governing Documents ...........................................................................11 2.3. Stormwater Run-On from Offsite Areas .....................................................................12 2.4. Construction Site Sediment & Receiving Water Risk Determination ..........................13 2.5. Construction Schedule ...............................................................................................14 2.6. Potential Construction Activity and Pollutant Sources ................................................14 2.7. Identification of Non-Stormwater Discharges .............................................................14 2.8. Required Site Map Information ..................................................................................15 Section 3. Best Management Practices........................................................................... 17 3.1. Schedule for BMP Implementation .............................................................................17 3.2. Erosion and Sediment Control ...................................................................................18 3.2.1. Erosion Control ..................................................................................................18 3.2.2. Sediment Controls .............................................................................................19 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP ii JANUARY 2023 3.3. Non-Stormwater Controls and Waste and Materials Management .............................21 3.3.1. Non-Stormwater Controls ...................................................................................21 3.3.2. Materials Management and Waste Management ...............................................23 3.4. Post Construction Stormwater Management Measures .............................................25 Section 4. BMP Inspection and Maintenance, and Rain Event Action Plans ................ 26 4.1. BMP Inspection and Maintenance .............................................................................26 4.2. Rain Event Action Plans (REAP) ...............................................................................26 Section 5. Training ........................................................................................................... 27 Section 6. Responsible Parties and Operators ............................................................... 28 6.1. Responsible Parties ...................................................................................................28 6.2. Contractor List ...........................................................................................................29 Section 7. Construction Site Monitoring Program ......................................................... 30 7.1. Purpose .................................................................................................................30 7.2. Applicability of Permit Requirements ......................................................................30 7.3. Weather and Rain Event Tracking .........................................................................30 7.3.1. Weather Tracking ...........................................................................................30 7.3.2. Rain Gauges ..................................................................................................31 7.4. Monitoring Locations ..............................................................................................31 7.5. Safety and Monitoring Exemptions.........................................................................31 7.6. Visual Monitoring ...................................................................................................31 7.6.1. Routine Observations and Inspections ...........................................................32 7.6.1.1. Routine BMP Inspections ....................................................................... 32 7.6.1.2. Non-Stormwater Discharge Observations ............................................. 32 7.6.2. Rain-Event Triggered Observations and Inspections ......................................33 7.6.2.1. Visual Observations Prior to a Forecasted Qualifying Rain Event ...... 33 7.6.2.2. BMP Inspections During an Extended Storm Event ............................. 33 7.6.2.3. Visual Observations Following a Qualifying Rain Event ...................... 33 7.6.3. Visual Monitoring Procedures ........................................................................33 7.6.4. Visual Monitoring Follow-Up and Reporting ...................................................34 7.6.5. Visual Monitoring Locations ...........................................................................34 7.7. Water Quality Sampling and Analysis ....................................................................34 7.7.1. Sampling and Analysis Plan for Non-Visible Pollutants in Stormwater Runoff Discharges ....................................................................................................................34 7.7.1.1. Sampling Schedule ................................................................................. 35 7.7.1.2. Sampling Locations ................................................................................ 36 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP iii JANUARY 2023 7.7.1.3. Monitoring Preparation ........................................................................... 39 7.7.1.4. Analytical Constituents .......................................................................... 40 7.7.1.5. Sample Collection ................................................................................... 40 7.7.1.6. Sample Analysis ...................................................................................... 41 7.7.1.7. Data Evaluation and Reporting .............................................................. 43 7.7.2. Sampling and Analysis Plan for pH and Turbidity in Stormwater Runoff Discharges ....................................................................................................................43 7.7.2.1. Sampling Schedule ................................................................................. 43 7.7.2.2. Sampling Locations ................................................................................ 44 7.7.2.3. Monitoring Preparation ........................................................................... 45 7.7.2.4. Field Parameters ..................................................................................... 46 7.7.2.5. Sample Collection ................................................................................... 46 7.7.2.6. Field Measurements ................................................................................ 47 7.7.2.7. Data Evaluation and Reporting .............................................................. 47 7.7.3. Sampling and Analysis Plan for Non-Stormwater Discharges ........................49 7.7.3.1. Sampling Schedule ................................................................................ 49 7.7.3.2. Sampling Locations ............................................................................... 49 7.7.3.3. Monitoring Preparation .......................................................................... 50 7.7.3.4. Analytical Constituents.......................................................................... 51 7.7.3.5. Sample Collection .................................................................................. 51 7.7.3.6. Sample Analysis ..................................................................................... 52 7.7.3.7. Data Evaluation and Reporting ............................................................. 52 7.7.4. Sampling and Analysis Plan for Other Pollutants Required by the Regional Water Board ..................................................................................................................54 7.7.5. Training of Sampling Personnel .....................................................................54 7.7.6. Sample Collection and Handling ....................................................................54 7.7.6.1. Sample Collection ................................................................................... 54 7.7.6.2. Sample Handling ..................................................................................... 55 7.7.6.3. Sample Documentation Procedures ...................................................... 55 7.8. Active Treatment System Monitoring .....................................................................56 7.9. Watershed Monitoring Option ................................................................................56 7.10. Quality Assurance and Quality Control ..................................................................56 7.10.1. Field Logs ......................................................................................................56 7.10.2. Clean Sampling Techniques ..........................................................................57 7.10.3. Chain of Custody (CoC) .................................................................................57 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP iv JANUARY 2023 7.10.4. QA/QC Samples ............................................................................................57 7.10.4.1. Field Duplicates ..................................................................................... 57 7.10.4.2. Equipment Blanks ................................................................................. 57 7.10.4.3. Field Blanks ........................................................................................... 58 7.10.4.4. Travel Blanks ......................................................................................... 58 7.10.5. Data Verification .............................................................................................58 7.11. Records Retention .................................................................................................59 CSMP Attachment 1: Weather Reports ........................................................................... 60 CSMP Attachment 2: Monitoring Records ...................................................................... 62 CSMP Attachment 3: Example Forms ............................................................................ 64 CSMP Attachment 4: Field Meter Instructions ............................................................... 73 CSMP Attachment 5: Supplemental Information ............................................................ 75 Section 8. References ...................................................................................................... 77 Appendix A: Calculations ................................................................................................. 79 Appendix B: Site Maps ..................................................................................................... 81 Appendix C: Permit Registration Documents ................................................................. 83 Appendix D: SWPPP Amendments ................................................................................. 87 Appendix E: Submitted Changes to PRDs ...................................................................... 91 Appendix F: Construction Schedule ............................................................................... 95 Appendix G: Construction Activities, Materials Used, and Associated Pollutants ...... 98 Appendix H: Caltrans Stormwater BMP Construction Fact Sheets............................. 101 Appendix I: BMP Inspection Form ............................................................................... 104 Appendix J: Project Specific Rain Event Action Plan Template ................................. 113 Appendix K: Training Reporting Form .......................................................................... 115 Appendix L: Responsible Parties .................................................................................. 119 Appendix M: Contractors and Subcontractors ............................................................. 125 Appendix N: Construction General Permit.................................................................... 127 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 1 JANUARY 2023 Qualified SWPPP Developer Approval and Certification of the Stormwater Pollution Prevention Plan Project Name: Avila Ranch Phases 2, 3, 4, 5 & 6 Mass Grading Project Number: Tract 3089 “This Stormwater Pollution Prevention Plan and Attachments were prepared under my direction to meet the requirements of the California Construction General Permit (SWRCB Orders No. 2009-009- DWQ as amended by Order 2010-0014-DWQ and Order 2012-0006-DWQ). I certify that I am a Qualified SWPPP Developer (QSD) in good standing as of the date signed below.” 1/17/2023 QSD Signature Rachel Hawthorne Date 00287 QSD Name Director of Civil & Transportation Engineering, PE QSD Certificate Number 805-544-4011 Title and Affiliation rachelh@wallacegroup.us Telephone Number Email AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 3 JANUARY 2023 Amendment Log Project Name: Avila Ranch Phases 2, 3, 4, 5 & 6 Mass Grading Project Number: Tract 3089 Amendment No. Date Brief Description of Amendment, include section and page number Prepared and Approved By Name: QSD# Name: QSD# Name: QSD# Name: QSD# Name: QSD# Name: QSD# Name: QSD# Name: QSD# Name: QSD# AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 4 JANUARY 2023 Section 1. SWPPP Requirements 1.1. Introduction The Phases 2, 3, 4, 5 & 6 Mass Grading Avila Ranch project which is located in the City of San Luis Obispo, California near Buckley Road, Vachell Lane, and Venture Drive is being developed by Avila Ranch Developers, Inc. The Legally Responsible Person for the project is Josh Peterson. The project location is shown on the SWPPP Site Map in Appendix B. This Stormwater Pollution Prevention Plan (SWPPP) is designed to comply with California’s General Permit for Stormwater Discharges Associated with Construction and Land Disturbance Activities (General Permit) Order No. 2009-0009-DWQ as amended in 2010 and 2012 (NPDES No. CAS000002) issued by the State Water Resources Control Board (State Water Board). This SWPPP has been prepared following the SWPPP Template provided on the California Stormwater Quality Association Stormwater Best Management Practice Handbook Portal: Construction (CASQA, 2012). In accordance with the General Permit, Section XIV, this SWPPP is designed to address the following: · Pollutants and their sources, including sources of sediment associated with construction, construction site erosion and other activities associated with construction activity are controlled; · Where not otherwise required to be under a Regional Water Quality Control Board (Regional Water Board) permit, all non-stormwater discharges are identified and either eliminated, controlled, or treated; · Site BMPs are effective and result in the reduction or elimination of pollutants in stormwater discharges and authorized non-stormwater discharges from construction activity to the Best Available Technology/Best Control Technology (BAT/BCT) standard; Calculations for site run-on are in Appendix A. Information and locations of BMP controls for site run-on can be seen on the Mass Grading Erosion Control Plan for Avila Ranch Phases 2, 3, 4, 5 & 6 (Tract 3089), dated 12/21/2022. A project specific Rain Event Action Plan (REAP) template is located in Appendix J. Post-construction Stormwater Management Measures are delineated in Section 3.4. 1.2. Permit Registration Documents Required Permit Registration Documents (PRDs) shall be submitted to the State Water Board via the Stormwater Multi Application and Report Tracking System (SMARTS) by the Legally Responsible Person (LRP), or authorized personnel (i.e., Approved Signatory) under the direction of the LRP. The project-specific PRDs include: 1. Notice of Intent (NOI); 2. Risk Assessment (Construction Site Sediment and Receiving Water Risk Determination); 3. Site Map; 4. Annual Fee; 5. Signed Certification Statement (LRP Certification is provided electronically with SMARTS PRD submittal); 6. SWPPP; and AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 5 JANUARY 2023 7. Post construction water balance calculation. A Site Map can be found in Appendix B. A copy of the submitted PRDs shall be kept in Appendix C along with the Waste Discharge Identification (WDID) confirmation. 1.3. SWPPP Availability and Implementation The discharger shall make the SWPPP available at the construction site during working hours (see Section 7.5 of CSMP for working hours) while construction is occurring and shall be made available upon request by a State or Municipal inspector. When the original SWPPP is retained by a crewmember in a construction vehicle and is not currently at the construction site, current copies of the BMPs and map/drawing will be left with the field crew and the original SWPPP shall be made available via a request by radio/telephone. (CGP Section XIV.C) The SWPPP shall be implemented concurrently with the start of ground disturbing activities. 1.4. SWPPP Amendments The SWPPP should be revised when: · There is a General Permit violation. · There is a reduction or increase in total disturbed acreage (General Permit Section II Part C). · BMPs do not meet the objectives of reducing or eliminating pollutants in stormwater discharges. Additionally, the SWPPP shall be amended when: · There is a change in construction or operations which may affect the discharge of pollutants to surface waters, groundwater(s), or a municipal separate storm sewer system (MS4); · There is a change in the project duration that changes the project’s risk level; or · Deemed necessary by the QSD. The QSD has determined that the changes listed in Table 1.1 can be field determined by the QSP. All other changes shall be made by the QSD as formal amendments to the SWPPP. The following items shall be included in each amendment: · Who requested the amendment; · The location of proposed change; · The reason for change; · The original BMP proposed, if any; and · The new BMP proposed. Amendments shall be logged at the front of the SWPPP and kept in Appendix D with the Amendment certification. The SWPPP text shall be revised, replaced, and/or hand annotated as necessary to properly convey the amendment. SWPPP amendments must be made by a QSD. The following changes have been designated by the QSD as "to be field determined” and constitute minor changes that the QSP may implement based on field conditions. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 6 JANUARY 2023 Table 1.1 List of Changes to be Field Determined Candidate changes for field location or determination by QSP(1) Check changes that can be field located or field determined by QSP Increase quantity of an Erosion or Sediment Control Measure √ Relocate/Add stockpiles or stored materials √ Relocate or add toilets √ Relocate vehicle storage and/or fueling locations √ Relocate areas for waste storage √ Relocate water storage and/or water transfer location √ Changes to access points (entrance/exits) √ Change type of Erosion or Sediment Control Measure √ Changes to location of erosion or sediment control √ Minor changes to schedule or phases √ Changes in construction materials √ (1) Any field changes not identified for field location or field determination by QSP must be approved by QSD 1.5. Retention of Records Paper or electronic records of documents required by this SWPPP shall be retained for a minimum of five (5) years from the date generated or date submitted, whichever is later. These records shall be available at the Project Site until construction is complete. Records assisting in the determination of compliance with the General Permit shall be made available within a reasonable time, to the Regional Water Board, State Water Board or U.S. Environmental Protection Agency (EPA) upon request. Requests by the Regional Water Board for retention of records for a period longer than five (5) years shall be adhered to. 1.6. Required Non-Compliance Reporting If a General Permit discharge violation occurs, the QSP shall immediately notify the Legally Responsible Person (LRP). The LRP shall include information on the violation with the Annual Report. Corrective measures will be implemented immediately following identification of the discharge or written notice of non-compliance from the Regional Water Board. Discharges and corrective actions must be documented and include the following items: · The date, time, location, nature of operation and type of unauthorized discharge. · The cause or nature of the notice or order. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 7 JANUARY 2023 · The control measures (BMPs) deployed before the discharge event, or prior to receiving notice or order. · The date of deployment and type of control measures (BMPs) deployed after the discharge event, or after receiving the notice or order, including additional measures installed or planned to reduce or prevent re-occurrence. Reporting requirements for Numeric Action Levels (NALs) exceedances are discussed in Section 7.7.2.7. 1.7. Annual Report The General Permit requires that permittees prepare, certify, and electronically submit an Annual Report no later than September 1st of each year. The reporting period is July 1-June 30. Annual reports will be filed in SMARTS and in accordance with information required by the on- line forms. Reporting requirements are identified in Section XVI of the General Permit and include (but are not limited to) providing a summary of: 1) Sampling and analysis results including laboratory reports, analytical methods and reporting limits and chain of custody forms (Risk Levels 2 and 3); 2) Corrective actions and compliance activities, including those not implemented; 3) Violations of the General Permit; 4) Date, time, place, and name(s) of the inspector(s) for all sampling, inspections, and field measurement activities; 5) Visual observation and sample collection exception records; and 6) Training documentation of all personnel responsible for General Permit compliance activities. 1.8. Changes to Permit Coverage The General Permit allows for the reduction or increase of the total acreage covered under the General Permit when: · a portion of the project is complete and/or conditions for termination of coverage have been met · when ownership of a portion of the project is purchased by a different entity · or when new acreage is added to the project. Modified PRDs shall be filed electronically within 30 days of a reduction or increase in total disturbed area if a change in permit covered acreage is to be sought. The SWPPP shall be modified appropriately, shall be logged at the front of the SWPPP and certification of SWPPP amendments are to be kept in Appendix D. Updated PRDs submitted electronically via SMARTS shall be retained in Appendix E. 1.9. Notice of Termination A Notice of Termination (NOT) must be submitted electronically by the LRP via SMARTS to terminate coverage under the General Permit. The NOT must include a final Site Map and representative photographs of the project site that demonstrate final stabilization has been achieved. The NOT shall be submitted within 90 days of completion of construction. The Regional Water Board will consider a construction site complete when the conditions of the General Permit, Section II.D have been met, which include the following: AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 8 JANUARY 2023 · Final stabilization, or 70% final cover, has been reached. Demonstration that the site will not pose any additional sediment discharge risk than it did prior to the commencement of construction activity; · There is no potential for construction-related storm water pollutants to be discharged into site runoff; · Construction materials and wastes have been disposed of properly; · Compliance with the Post-Construction Standards of the General Permit, Section XIII has been demonstrated and a long-term maintenance plan has been established; and · All construction-related equipment, materials and any temporary BMPs no longer needed are removed from the site. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 9 JANUARY 2023 Section 2. Project Information 2.1. Project and Site Description 2.1.1. Site Description The proposed Avila Ranch Development is situated east of Highway 101 in the southern region of the City of San Luis Obispo, California. The project property is bounded by Vachell Lane to the west, Buckley Road to the south, industrial land uses to the north, and agricultural space to the east. The project site is bisected by Tank Farm Creek, which runs from the north edge of the site to the southwest corner. Tank Farm Creek outlets to San Luis Obispo Creek west of the project site. The project is located at 35.2379 Lat./ -120.6667 Long. and is identified on the Site Map in Appendix B. 2.1.2. Existing Conditions As of the initial date of this SWPPP, the existing site is covered by rural, non-grazed grasses that drain from the northeast to the southwest of the site. Onsite run-off flows in shallow channels across the open space and agricultural lands towards Tank Farm Creek. The project also receives run-on from several existing off-site tributary watersheds (see Appendix B for the Existing Watersheds map). To the north, there are two primarily light industrial watersheds and to the east there is a watershed used for agricultural activities. These historic flows travel southwest across the project site toward Tank Farm Creek which bisects Avila Ranch. Further geotechnical information and soil sample data for this project site can be found in the Soils Engineering Report Update Avila Ranch Development, Phases II-VI, dated January 23, 2022, and the Infiltration Testing Reports for Avila Ranch Development, dated September 4, 2015 and February 9, 2022. 2.1.3. Existing Drainage The existing site has paved perimeter roads including Vachell Lane, Buckley Road and Venture Drive. The elevation of the project site ranges from 92.0 feet to 129.0 feet above mean sea level. There are three major existing watersheds tributary to the project and historic flows travel toward the bisecting Tank Farm Creek. Stormwater discharges from the site are considered direct discharges, as defined by the State Water Board, into Tank Farm Creek with indirect discharge to the San Luis Obispo Creek. Existing site topography, drainage patterns, and stormwater conveyance systems are shown on the Site Map in Appendix B. San Luis Obispo Creek is listed for water quality impairment on the 2014 and 2016 Integrated Report (Clean Water Act Section 303(d) List/305(b) Report). 2.1.4. Geology and Groundwater GeoSolutions, Inc. prepared a site-specific geotechnical report (Soils Engineering Report Update Avila Ranch Development, Phases II-VI, dated January 23, 2022) for the project, along with infiltration testing reports (Infiltration Testing Reports for Avila Ranch Development, dated September 4, 2015 and February 9, 2022). Based on the geotechnical report, soils on the site are primarily comprised of older alluvium and varying shades of black sandy fat clays. Groundwater was encountered at depths ranging from 6 to 18 feet below existing grades. A review of borings previously completed by Earth Systems Pacific in 2001 showed groundwater being encountered at shallower depths ranging from 4-9 feet below existing grades. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 10 JANUARY 2023 The NRCS web soil data identifies the soils as Hydrologic Soil Group C and D (mostly clay and loams), which are associated with moderate-to-low infiltration rate and are caused by the existence of clays within the soil complexes. Perforated pipe shallow infiltration tests were performed at a combined 24 on-site locations as part of the GeoSolutions geotechnical reports dated 2/9/2022 and 9/4/2015. The observed test percolation rates across the site range from 0.04 to 5.52 in/hr. However, these rates overestimate the infiltration rate for shallow basin style infiltration facilities, which are proposed. For shallow facilities with more bottom area than sidewall area, the Porchet conversion is applied to the test data to determine the applicable infiltration rate. Using the Porchet conversion method, infiltration rates ranged from 0.03 to 0.74 in/hr. 2.1.5. Project Description This SWPPP has been prepared for the Phases 2, 3, 4, 5 & 6 Mass Grading of Avila Ranch (Tract 3089). Project grading and soil disturbance will occur on 101.71 acres, which comprises approximately 87 percent of the total 116.96-acre property. The limits of grading, area of disturbance and permit coverage area are shown on the Site Map in Appendix B. Grading will include both cut and fill activities. The Phases 2, 3, 4, 5 & 6 Mass Grading of Avila Ranch (Tract 3089) plans require a net import of approximately 70,010 cubic yards. Construction activities will be phased. 2.1.6. Developed Condition The project includes the mass grading for Phases 2, 3, 4, 5 & 6 of Avila Ranch. After construction of the mass grading, the project site will have padded lots with surface drainage improvements to manage the runoff from the mass graded conditions. The surface drainage improvements will consist of both temporary and permanent features. Two concrete arch culverts, two concrete drainage swales along the north and west boundaries, a large dual-pipe storm drain bypass in Phase 3 (SD02), and two other storm drain pipe networks (SD01 and SD03) will be constructed during the mass grading phase of this project. Storm Drain 01 (SD01) will convey stormwater runoff from the southeast and offsite run-on across Avila Ranch to Tank Farm Creek. Storm Drain 03 will convey stormwater from the northeast of the project and offsite run-on across future Venture Drive to an existing drainage swale that outlets to Tank Farm Creek. The future proposed project land use types will range from large lot residential single-family homes to high-density residential complexes, two commercial lots, open space areas, parks, and agricultural-use areas. In the mass graded condition there will be no significant increase to the impervious area compared to the pre-development conditions. Post construction drainage patterns and conveyance systems for the mass grading conditions are shown on the Site Map in Appendix B, referenced from the Phases 2-6 Mass Grading Plan. Phases 2, 3, 4, 5 & 6 mass grading will include the construction of a triple-arch culvert crossing at Venture Drive, a single-arch culvert crossing at Jespersen Road, and two pedestrian/ bicycle path bridges crossing Tank Farm Creek in open space areas. The associated waste discharge requirement (WDR) permit for these items is currently under review by the Central Coast Regional Water Quality Control Board. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 11 JANUARY 2023 Table 2.1 Construction Site Estimates Construction site area 116.96 acres Percent impervious before construction 0.00 % Runoff coefficient before construction 0.20 Percent impervious after construction <0.50 % Runoff coefficient after construction 0.20 The mass grading of Phases 2, 3, 4, 5 & 6 will not construct features that would significantly increase the amount of impervious area across the site. The infrastructure that will be constructed in the mass grading phase will be retaining walls, two concrete drainage swales along the north and west boundaries, two arch culverts, and the mass grading storm drain systems. The combined impervious surface areas of these entities is less than 0.50% of the overall construction site area. Listed above in Table 2.1. See Appendix A for the mass grading construction site estimate calculations. 2.2. Permits and Governing Documents In addition to the General Permit, the following documents have been taken into account while preparing this SWPPP · Avila Ranch Vesting Tentative Tract Map – Tract 3089 · Avila Ranch Development Plan · Avila Ranch Tract 3089 – Mass Grading Plan for Phases 2, 3, 4, 5 & 6 · Avila Ranch Tract 3089 – Erosion & Sediment Control Plan for Phases 2, 3, 4, 5 & 6 · Drainage Report for Avila Ranch – Phases 2-6 Mass Grading (dated January 2023) · Stormwater Control Plan for Avila Ranch – Phases 2-6 Mass Grading (dated 12/21/2022) · Final Environmental Impact Report for the Avila Ranch Development – Tract 3089 · Regional Water Quality Control Board Waste Discharge Requirement Permit No.: WDID 34022WQ09. o Under review by RWQCB, issuance of Regulatory Letter expected January 2023. · US Army Corps of Engineers Permit.: N/A · CA Department of Fish and Wildlife Notification No.: EPIMS#29127 o (Application in progress by project biologist Althouse and Meade and permit under review) Submitted 11/10/2022, application deemed complete 12/10/2022, draft agreement expected 2/10/2023. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 12 JANUARY 2023 2.3. Stormwater Run-On from Offsite Areas A total of eleven offsite watersheds were identified as contributing directly to run-on onto the Avila Ranch site by overland flow or indirectly through Tank Farm Creek. See Appendix B for the Existing Watersheds Map and refer to the Drainage Report for Avila Ranch – Phases 2-6 Mass Grading (dated January 2023) for more detailed offsite information. The north boundary of the project between Earthwood Drive and Tank Farm Creek directly receives run-on from offsite watersheds 1, 2 and 3. A concrete swale will be constructed to accept the run-on and covey stormwater to two 48-inch culverts. These culverts will convey the offsite run-on through the project to Tank Farm Creek. The east boundary directly receives run-on at several different locations. Offsite watershed 9 produces stormwater that sheet flows towards the project’s northwest corner agricultural field. Offsite watershed 10 sheet flows stormwater towards future Park G in Phase 4. A vegetated perimeter swale is proposed to capture and convey stormwater away from the developed areas and release it in the Phase 4 southern open space area, following historical drainage patterns westward. Offsite watershed 11 also produces stormwater that sheet flows to the Phase 4 southern open space. A vegetated perimeter swale along the southern boundary and future bike path will assist in directing run-on stormwater towards Tank Farm Creek, following historical drainage patterns. The stormwater runoff drainage area contributing to direct offsite run-on is estimated to be approximately 82 acres. The anticipated runoff coefficients for these directly contributing offsite watersheds are listed below. * Referenced from Table 2 of the Drainage Report for Avila Ranch – Phases 2-6 Mass Grading (dated January 2023) The anticipated, combined offsite run-on to the project in a 25-year storm event is estimated to be 86 cfs; calculations are detailed in the Drainage Report for Avila Ranch – Phases 2, 3, 4, 5 & 6 Mass Grading (dated January 2023). The General Permit requires that temporary BMPs be implemented to direct offsite run-on away from disturbed areas through the use of runoff controls. The BMP designs are further detailed in the attached Mass Grading Erosion Control Plan for Avila Ranch Phases 2, 3, 4, 5 & 6 (Tract 3089), dated 12/21/2022. The off-site drainage areas and BMPs are shown on Site Map in Appendix B. Information on the BMPs included on this project can be found on the site erosion control plan (see reference above). AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 13 JANUARY 2023 2.4. Construction Site Sediment & Receiving Water Risk Determination A construction site risk assessment has been performed for the project and the resultant risk level is Risk Level 2. The risk level was determined through the use of the analysis of R, K and LS. The risk level is based on project duration, location, proximity to impaired receiving waters and soil conditions. A copy of the Risk Level determination submitted on SMARTS with the PRDs is included in Appendix C. Table 2.2 and Table 2.3 summarize the sediment and receiving water risk factors and document the sources of information used to derive the factors. Table 2.2 Summary of Sediment Risk RUSLE Factor Value Method for establishing value R 246.7 EPA Fact Sheet 3.1 K 0.24 SMARTS LS 1.25 SMARTS Total Predicted Sediment Loss (tons/acre) 74.01 Overall Sediment Risk Low Sediment Risk < 15 tons/ acre Medium Sediment Risk >= 15 and < 75 tons/acre High Sediment Risk >= 75 tons/acre Low Medium High Runoff from the project site indirectly and directly discharges into Tank Farm Creek and tributaries to San Luis Obispo Creek that eventually discharges into the Pacific Ocean. Table 2.3 Summary of Receiving Water Risk Receiving Water Name 303(d) Listed for Sediment Related Pollutant(1) TMDL for Sediment Related Pollutant(1) Beneficial Uses of COLD, SPAWN, and MIGRATORY(1) San Luis Obispo Creek Yes No Yes No Yes No Overall Receiving Water Risk Low High (1) If yes is selected for any option the Receiving Water Risk is High Risk Level 2 sites are subject to both the narrative effluent limitations and numeric effluent standards. The narrative effluent limitations require stormwater discharges associated with construction activity to minimize or prevent pollutants in stormwater and authorized non- stormwater through the use of controls, structures, and best management practices. Discharges from Risk Level 2 sites are subject to NALs for pH and turbidity shown in Table 2.4. This SWPPP has been prepared to address Risk Level 2 requirements (General Permit Attachment E). AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 14 JANUARY 2023 This site has direct discharges to a receiving water. Table 2.4 Numeric Action Levels Parameter Unit Numeric Action Level Daily Average pH pH units Lower NAL = 6.5 Upper NAL = 8.5 Turbidity NTU 250 NTU 2.5. Construction Schedule The site sediment risk was determined based on construction taking place between April 15, 2023 and December 31, 2026. The start date of construction is when site disturbance commences, and the end date of construction is when final stabilization is achieved. Modification or extension of the schedule (start and end dates) may affect risk determination and permit requirements. The LRP shall contact the QSD if the schedule changes during construction to address potential impact to the SWPPP. The estimated schedule for planned work can be found in Appendix F. 2.6. Potential Construction Activity and Pollutant Sources Appendix G includes a list of construction activities and associated materials that are anticipated to be used onsite. These activities and associated materials will or could potentially contribute pollutants, other than sediment, to stormwater runoff. The anticipated activities and associated pollutants were used in Section 3 to select the Best Management Practices for the project. Location of BMPs are shown on the Mass Grading Erosion Control Plan for Avila Ranch Phases 2, 3, 4, 5 & 6 (Tract 3089), dated 12/212022. For sampling requirements for non-visible pollutants associated with construction activity please refer to Section 7.7.1. For a full and complete list of onsite pollutants, refer to the Material Safety Data Sheets (MSDS), which are retained onsite at the construction trailer. 2.7. Identification of Non-Stormwater Discharges Non-stormwater discharges consist of discharges which do not originate from precipitation events. The General Permit provides allowances for specified non-stormwater discharges that do not cause erosion or carry other pollutants. Non-stormwater discharges into storm drainage systems or waterways, which are not authorized under the General Permit and listed in the SWPPP, or authorized under a separate NPDES permit, are prohibited. Non-stormwater discharges that are authorized from this project site include the following: · NONE Activities at this site that may result in unauthorized non-stormwater discharges include: · Onsite grading AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 15 JANUARY 2023 · Onsite bridge construction (grading and concrete) · Onsite culvert construction (grading and concrete) Steps will be taken, including the implementation of appropriate BMPs, to ensure that unauthorized discharges are eliminated, controlled, disposed, or treated on-site. Discharges of construction materials and wastes, such as fuel or paint, resulting from dumping, spills, or direct contact with rainwater or stormwater runoff, are also prohibited. The following discharge(s) have been authorized by (a) regional NPDES permit(s): · Stormwater runoff from the project site 2.8. Required Site Map Information The construction project’s Site Map showing the project location, surface water boundaries, geographic features, construction site perimeter and general topography and other requirements identified in Attachment B of the General Permit is located in Appendix B. Table 2.5 identifies Maps or Sheets where required elements are illustrated. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 16 JANUARY 2023 Table 2.5 Required Map Information Included on Map/Plan Sheet No.(1) Required Element Erosion & Sed. Control Plan(2) The project’s surrounding area (vicinity) Erosion & Sed. Control Plan(2) Site layout Erosion & Sed. Control Plan(2) Construction site boundaries Erosion & Sed. Control Plan(2) Drainage areas Erosion & Sed. Control Plan(2) Discharge locations SWPPP Site Map(2), Erosion & Sed. Control Plan(2) Sampling locations SWPPP Site Map(2), Erosion & Sed. Control Plan(2) Areas of soil disturbance (temporary or permanent) Erosion & Sed. Control Plan(2) Active areas of soil disturbance (cut or fill) Erosion & Sed. Control Plan(2) Locations of runoff BMPs Erosion & Sed. Control Plan(2) Locations of erosion control BMPs Erosion & Sed. Control Plan(2) Locations of sediment control BMPs N/A ATS location (if applicable) SWPPP Site Map(2), Erosion & Sed. Control Plan(2) Locations of sensitive habitats, watercourses, or other features which are not to be disturbed Erosion & Sed. Control Plan(2) Locations of all post construction BMPs SWPPP Site Map(2), Erosion & Sed. Control Plan(2) Waste storage areas SWPPP Site Map(2), Erosion & Sed. Control Plan(2) Vehicle storage areas SWPPP Site Map(2), Erosion & Sed. Control Plan(2) Material storage areas Erosion & Sed. Control Plan(2) Entrance and Exits SWPPP Site Map(2), Erosion & Sed. Control Plan(2) Fueling Locations Notes: (1) Indicates maps or drawings on which the information is included (2) Indicates elements which may be revised on map as project progresses AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 17 JANUARY 2023 Section 3. Best Management Practices 3.1. Schedule for BMP Implementation BMPs must be implemented, modified, and maintained to reflect the phase of construction and the weather conditions. Table 3.1 BMP Implementation Schedule BMP Location Duration Er o s i o n Co n t r o l SS-1, Scheduling See Erosion & Sediment Control Plan Entirety of Project Construction SS-2, Preservation of Ex. Vegetation Entirety of Project Construction SS-3, Hydraulic Mulch Entirety of Project Construction SS-4, Hydroseeding Prior to Site Stabilization and Applied to Inactive Areas during Construction SS-7, Temp. Cover & Rolled Erosion Control Products Entirety of Project Construction or until Final Improvements are Implemented SS-9, Earth Dikes/ Drainage Swales and Lined Ditches Entirety of Project Construction or until Final Improvements are Implemented SS-10, Outlet Protection/ Velocity Dissipation Devices Entirety of Project Construction or until Final Improvements are Implemented SS-11, Slope Drains Entirety of Project Construction or until Final Improvements are Implemented SC-4, Check Dams Entirety of Project Construction EC-15, Soil Preparation/ Roughening Entirety of Project Construction WE-1, Wind Erosion Control Entirety of Project Construction Se d i m e n t C o n t r o l SC-3, Temp. Sediment Traps See Erosion & Sediment Control Plan Entirety of Project Construction or until Final Improvements are Implemented SC-4, Check Dams Entirety of Project Construction SC-5, Fiber Rolls Entirety of Project Construction SC-6, Gravel Bag/ Earthen Berms Entirety of Project Construction or until Final Improvements are Implemented SC-8, Sandbag Barriers Entirety of Project Construction or until Final Improvements are Implemented SC-10, Temp. Drainage Inlet Protection Entirety of Project Construction SS-10, Outlet Protection/ Velocity Dissipation Devices Entirety of Project Construction or until Final Improvements are Implemented Tr a c k i n g Co n t r o l TC-1, Temporary Construction Entrance/ Exit See Erosion & Sediment Control Plan Entirety of Project Construction AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 18 JANUARY 2023 3.2. Erosion and Sediment Control Erosion and sediment controls are required by the General Permit to provide effective reduction or elimination of sediment related pollutants in stormwater discharges and authorized non- stormwater discharges from the Site. Applicable BMPs are identified in this section for erosion control, sediment control, tracking control, and wind erosion control. 3.2.1. Erosion Control Erosion control, also referred to as soil stabilization, consists of source control measures that are designed to prevent soil particles from detaching and becoming transported in stormwater runoff. Erosion control BMPs protect the soil surface by covering and/or binding soil particles. This construction project will implement the following practices to provide effective temporary and final erosion control during construction: 1. Preserve existing vegetation where required and when feasible. 2. The area of soil disturbing operations shall be controlled such that the Contractor is able to implement erosion control BMPs quickly and effectively. 3. Stabilize non-active areas within 14 days of cessation of construction activities or sooner if stipulated by local requirements. 4. Control erosion in concentrated flow paths by applying erosion control blankets, check dams, erosion control seeding or alternate methods. 5. Prior to the completion of construction, apply permanent erosion control to remaining disturbed soil areas. 6. Effective wind erosion control shall be provided. 7. Effective soil cover for active and inactive areas and all finished slopes, open space, utility backfill and completed lots shall be provided. 8. The use of plastic materials shall be limited when more sustainable, environmentally friendly alternatives exist. Sufficient erosion control materials shall be maintained onsite to allow implementation in conformance with this SWPPP. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 19 JANUARY 2023 The following temporary erosion control BMP selection table indicates the BMPs that shall be implemented to control erosion on the construction site. Fact Sheets for temporary erosion control BMPs are provided in Appendix H. Table 3.2 Temporary Erosion Control BMPs Caltrans Fact Sheet BMP Name Meets a Minimum Requirement(1) BMP Used If not used, state reason YES NO SS-1 Scheduling   SS-2 Preservation of Existing Vegetation   SS-3 Hydraulic Mulch (2)  SS-4 Hydroseed (2)  SS-5 Soil Binders (2)  Using SS-3 and SS-4 SS-6 Straw Mulch (2)  Using SS-3 and SS-4 SS-7 Geotextiles and Mats (2)  SS-8 Wood Mulching (2)  Using SS-3 and SS-4 SS-9 Earth Dike and Drainage Swales (3)  SS-10 Velocity Dissipation Devices  SS-11 Slope Drains  SS-12 Stream Bank Stabilization  Not Applicable EC-14 Compost Blankets (2)  Using SS-3 and SS-4 EC-15 Soil Preparation- Roughening  EC-16 Non-Vegetated Stabilization (2)  Using SS-3 and SS-4 WE-1 Wind Erosion Control   (1) Applicability to a specific project shall be determined by the QSD. (2) The QSD shall ensure implementation of one of the minimum measures listed or a combination thereof to achieve and maintain the Risk Level requirements. (3) Run-on from offsite shall be directed away from all disturbed areas, diversion of offsite flows may require design/analysis by a licensed civil engineer and/or additional environmental permitting. These temporary and/or permanent erosion control BMPs shall be implemented as outlined in the BMP Fact Sheets provided in Appendix H. If there is a conflict between documents (the Site Map, Erosion & Sediment Control Plan, the SWPPP body, Caltrans BMP Fact Sheets) the most restrictive document or guidance will prevail. 3.2.2. Sediment Controls Sediment controls are temporary or permanent structural measures that are intended to complement the selected erosion control measures and reduce sediment discharges from active construction areas. Sediment controls are designed to intercept and settle out soil particles that have been detached and transported by the force of water. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 20 JANUARY 2023 The following sediment control BMP selection table indicates the BMPs that shall be implemented to control sediment on the construction site. Fact Sheets for temporary sediment control BMPs are provided in Appendix H. Table 3.3 Temporary Sediment Control BMPs Caltrans Fact Sheet BMP Name Meets a Minimum Requirement(1) BMP used If not used, state reason YES NO SC-1 Silt Fence (2)(3)  Using SC-5 SS-2 Preservation of Ex. Vegetation  SC-3 Sediment Trap  SC-4 Check Dams  SC-5 Fiber Rolls (2)(3)  SC-6 Gravel Bag Berm (3)  SC-7 Street Sweeping   Using TC-1 SC-8 Sandbag Barrier  SC-9 Straw Bale Barrier  Using SC-4, SC-5 SC-10 Storm Drain Inlet Protection  (2)(3)  SE-11 ATS  Not required SE-12 Manufactured Linear Sediment Controls  Using SC-5 SE-13 Compost Sock and Berm (3)  Using SC-5 SE-14 Biofilter Bags (3)  Using SC-5 TC-1 Stabilized Construction Entrance and Exit   TC-2 Stabilized Construction Roadway  Using TC-1 TC-3 Entrance Outlet Tire Wash  Using TC-1 Alternate BMPs Used: If used, state reason: (1)Applicability to a specific project shall be determined by the QSD (2) The QSD shall ensure implementation of one of the minimum measures listed or a combination thereof to achieve and maintain the Risk Level requirements (3)Risk Level 2 &3 shall provide linear sediment control along toe of slope, face of slope, and at grade breaks of exposed slope AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 21 JANUARY 2023 Temporary sediment control BMPs shall be implemented in accordance with the BMP Fact Sheets provided in Appendix H. If there is a conflict between documents (the Site Map, Erosion & Sediment Control Plan, the SWPPP body, Caltrans BMP Fact Sheets) the most restrictive document or guidance will prevail. 3.3. Non-Stormwater Controls and Waste and Materials Management 3.3.1. Non-Stormwater Controls Non-stormwater discharges into storm drainage systems or waterways, which are not authorized under the General Permit, are prohibited. Non-stormwater discharges for which a separate NPDES permit is required by the local Regional Water Board are prohibited unless coverage under the separate NPDES permit has been obtained for the discharge. The selection of non-stormwater BMPs is based on the list of construction activities with a potential for non- stormwater discharges identified in Section 2.7 of this SWPPP. The following non-stormwater control BMP selection table indicates the BMPs that shall be implemented to control sediment on the construction site. Fact Sheets for temporary non- stormwater control BMPs are provided in Appendix H. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 22 JANUARY 2023 Table 3.4 Temporary Non-Stormwater BMPs Caltrans Fact Sheet BMP Name Meets a Minimum Requirement(1) BMP used If not used, state reason YES NO NS-1 Water Conservation Practices   NS-2 Dewatering Operation  No dewatering required NS-3 Paving and Grinding Operation  No paving or grinding NS-4 Temporary Stream Crossing  Existing stream crossing to be used until permanent stream crossing is constructed NS-5 Clear Water Diversion  Not included in this project NS-6 Illicit Connection/Discharge   NS-7 Potable Water/Irrigation  NS-8 Vehicle and Equipment Cleaning   NS-9 Vehicle and Equipment Fueling   NS-10 Vehicle and Equipment Maintenance   NS-11 Pile Driving Operation  Pile Driving will not be used in the construction of this project. NS-12 Concrete Curing  NS-14 Concrete Finishing  NS-13 Material and Equipment Use Over Water  NS-15 Demolition Removal Adjacent to Water  Alternate BMPs Used: If used, state reason: (1) Applicability to a specific project shall be determined by the QSD AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 23 JANUARY 2023 Non-stormwater BMPs shall be implemented in accordance with the BMP Fact Sheets provided in Appendix H. If there is a conflict between documents (the Site Map, Erosion & Sediment Control Plan, the SWPPP body, Caltrans BMP Fact Sheets) the most restrictive document or guidance will prevail. 3.3.2. Materials Management and Waste Management Materials management control practices consist of implementing procedural and structural BMPs for handling, storing, and using construction materials to prevent the release of those materials into stormwater discharges. The amount and type of construction materials to be utilized at the Site will depend upon the type of construction and the length of the construction period. The materials may be used continuously, such as fuel for vehicles and equipment, or the materials may be used for a discrete period, such as soil binders for temporary stabilization. Waste management consists of implementing procedural and structural BMPs for handling, storing, and ensuring proper disposal of wastes to prevent the release of those wastes into stormwater discharges. Materials and waste management pollution control BMPs shall be implemented to minimize stormwater contact with construction materials, wastes and service areas; and to prevent materials and wastes from being discharged off-site. The primary mechanisms for stormwater contact that shall be addressed include: · Direct contact with precipitation · Contact with stormwater run-on and runoff · Wind dispersion of loose materials · Direct discharge to the storm drain system through spills or dumping · Extended contact with some materials and wastes, such as asphalt cold mix and treated wood products, which can leach pollutants into stormwater. A list of construction activities is provided in Section 2.6. The following Materials and Waste Management BMP selection table indicates the BMPs that shall be implemented to handle materials and control construction site wastes associated with these construction activities. Fact Sheets for Materials and Waste Management BMPs are provided in Appendix H. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 24 JANUARY 2023 Table 3.5 Temporary Materials Management BMPs CASQA/ Caltrans Fact Sheet BMP Name Meets a Minimum Requirement(1) BMP used If not used, state reason YES NO WM-01 Material Delivery and Storage   WM-02 Material Use   WM-03 Stockpile Management   WM-04 Spill Prevention and Control   WM-05 Solid Waste Management   WM-06 Hazardous Waste Management   WM-07 Contaminated Soil Management  Not Applicable – See Final Environmental Impact Report for Avila Ranch WM-08 Concrete Waste Management   WM-09 Sanitary-Septic Waste Management   WM-10 Liquid Waste Management  Alternate BMPs Used: If used, state reason: (1) Applicability to a specific project shall be determined by the QSD. Temporary Materials Management BMPs shall be implemented in accordance with the BMP Fact Sheets provided in Appendix H. If there is a conflict between documents (the Site Map, Erosion & Sediment Control Plan, the SWPPP body, Caltrans BMP Fact Sheets) the most restrictive document or guidance will prevail. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 25 JANUARY 2023 3.4. Post Construction Stormwater Management Measures Post construction BMPs are permanent measures installed during construction, designed to reduce or eliminate pollutant discharges from the site after construction is completed. This site is located in an area subject to a Phase I or Phase II Municipal Separate Storm Sewer System (MS4) permit approved Stormwater Management Plan. Yes No Post construction runoff reduction requirements have been satisfied through the MS4 program. For more detailed post-construction stormwater information, refer to the Stormwater Control Plan for Avila Ranch – Phases 2-6 Mass Grading Permit (dated January 2023). AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 26 JANUARY 2023 Section 4. BMP Inspection and Maintenance, and Rain Event Action Plans 4.1. BMP Inspection and Maintenance The General Permit requires routine weekly inspections of BMPs, along with inspections before, during, and after qualifying rain events. A BMP inspection checklist must be filled out for inspections and maintained on-site with the SWPPP. The inspection checklist includes the necessary information covered in Section 7.6. A blank inspection checklist can be found in Appendix I. Completed checklists shall be kept in CSMP Attachment 2 “Monitoring Records. BMPs shall be maintained regularly to ensure proper and effective functionality. If necessary, corrective actions shall be implemented within 72 hours of identified deficiencies and associated amendments to the SWPPP shall be prepared by the QSD. Specific details for maintenance, inspection, and repair of Construction Site BMPs can be found in the BMP Factsheets in Appendix H. 4.2. Rain Event Action Plans (REAP) The Rain Event Action Plan (REAP) is a written document designed to be used as a planning tool by the QSP to protect exposed portions of project sites and to ensure that the discharger has adequate materials, staff, and time to implement erosion and sediment control measures. These measures are intended to reduce the amount of sediment and other pollutants that could be generated during the rain event. It is the responsibility of the QSP to be aware of precipitation forecast and to obtain and print copies of forecasted precipitation from NOAA’s National Weather Service Forecast Office: http://www.weather.gov/. No other forecasts are acceptable. The SWPPP includes REAP templates which shall be prepared by the QSP to address specific project concerns prior to each rain event. Site-specific REAP templates for each applicable project phase can be found in Appendix J. The QSP shall maintain a paper copy of completed REAPs in compliance with the record retention requirements Section 1.5 of this SWPPP. Completed REAPs shall be kept in CSMP Attachment 2: Monitoring Records. The QSP will develop an event specific REAP 48 hours in advance of a precipitation event forecast to have a 50% or greater chance of producing precipitation in the project area. The REAP will be onsite and will be implemented 24 hours in advance of the predicted precipitation event. At minimum, the REAP will include the following site and phase-specific information: 1. Site Address; 2. Calculated Risk Level (2); 3. Site Stormwater Manager Information including the name, company and 24-hour emergency telephone number; 4. Erosion and Sediment Control Provider information including the name, company and 24-hour emergency telephone number; 5. Stormwater Sampling Agent information including the name, company, and 24-hour emergency telephone number; 6. Activities associated with each construction phase; 7. Trades active on the construction site during each construction phase; 8. Trade contractor information; and 9. Recommended actions for each project phase. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 27 JANUARY 2023 Section 5. Training Appendix L identifies the QSP(s) for the project. To promote stormwater management awareness specific for this project, periodic training of job-site personnel shall be included as part of routine project meetings (e.g. daily/weekly tailgate safety meetings), or task specific trainings as needed. The QSP shall be responsible for providing this information at the meetings, and subsequently completing the training logs shown in Appendix K. The training logs shall identify the site- specific stormwater topics covered as well as the names of site personnel who attended the meeting. Tasks may be delegated to trained employees by the QSP with the provision of adequate supervision and oversight. Training shall correspond to the specific task delegated including: SWPPP implementation; BMP inspection and maintenance; and record keeping. Documentation of all training activities (formal and informal) shall be retained in SWPPP Appendix K. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 28 JANUARY 2023 Section 6. Responsible Parties and Operators 6.1. Responsible Parties Approved Signatories who are responsible for SWPPP implementation and have authority to sign permit-related documents are listed below. Written authorizations from the LRP for these individuals are provided in Appendix L. The Approved Signatories assigned to this project are: Name Title Phone Number Dan Garson Director of Land Development 805-595-5440 The QSP(s) identified for this project are listed in Appendix L. The QSP shall have primary responsibility and significant authority for the implementation, maintenance, and inspection/monitoring of SWPPP requirements. The QSP will be available at all times (during normal business hours) throughout the duration of the project. Duties of the QSP include but are not limited to: · Implementing all elements of the General Permit and SWPPP, including but not limited to: o Ensuring, via notification of the LRP, that all BMPs are implemented, inspected, and properly maintained; o Performing non-stormwater and stormwater visual observations and inspections; o Performing non-stormwater and storm sampling and analysis, as required; o Performing routine inspections and observations; o Ensuring, via notification of the LRP, the implementation of non-stormwater management, and materials and waste management activities such as: monitoring discharges; general Site clean-up; vehicle and equipment cleaning, fueling and maintenance; spill control; no materials other than stormwater are discharged in quantities which will have an adverse effect on receiving waters or storm drain systems; etc.; · The QSP may delegate these inspections and activities to an appropriately trained employee, but shall ensure adequacy and adequate deployment. · Notifying the LRP or Authorized Signatory immediately of unauthorized discharges. · The QSP may be assigned authority by the LRP to mobilize crews in order to make immediate repairs to the control measures. · Coordinate with the LRP to assure all of the necessary corrections/repairs are made immediately and that the project complies with the SWPPP, the General Permit and approved plans at all times. · Notifying the LRP or Authorized Signatory immediately of off-site discharges or other non-compliance events. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 29 JANUARY 2023 6.2. Contractor List Contractor Name: To Be Determined Title: Company: Address: Phone Number: Number (24/7): Subcontractor Name: Title: Company: Address: Phone Number: Number (24/7): AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 30 JANUARY 2023 Section 7. Construction Site Monitoring Program 7.1. Purpose This Construction Site Monitoring Program was developed to address the following objectives: 1. To demonstrate that the site is in compliance with the Discharge Prohibitions and Numeric Action Levels (NALs) of the Construction General Permit; 2. To determine whether non-visible pollutants are present at the construction site and are causing or contributing to exceedances of water quality objectives; 3. To determine whether immediate corrective actions, additional Best Management Practices (BMP) implementation, or SWPPP revisions are necessary to reduce pollutants in stormwater discharges and authorized non-stormwater discharges; 4. To determine whether BMPs included in the SWPPP and REAP are effective in preventing or reducing pollutants in stormwater discharges and authorized non- stormwater discharges. 7.2. Applicability of Permit Requirements This project has been determined to be a Risk Level 2 project. The General Permit identifies the following types of monitoring as being applicable for a Risk Level 2 project. Risk Level 2 · Visual inspections of Best Management Practices (BMPs); · Visual monitoring of the site related to qualifying storm events; · Visual monitoring of the site for non-stormwater discharges; · Sampling and analysis of construction site runoff for pH and turbidity; · Sampling and analysis of construction site runoff for other parameters if applicable; · Sampling and analysis of receiving waters if applicable; · Sampling and analysis of non-stormwater discharges; · Sampling and analysis of construction site runoff for non-visible pollutants when applicable; · Sampling and analysis of non-stormwater discharges when applicable; and Bioassessment monitoring if applicable. 7.3. Weather and Rain Event Tracking Visual monitoring, inspections, and sampling requirements of the General Permit are triggered by a qualifying rain event. The General Permit defines a qualifying rain event as any event that produces ½ inch of precipitation. A minimum of 48 hours of dry weather will be used to distinguish between separate qualifying storm events. For the purposes of assessing exceptions to the Receiving Water Monitoring Triggers the General Permit establishes the compliance storm event as the 5-year, 24-hour event. Based on the Western Regional Climate Center (http://www.wrcc.dri.edu/pcpnfreq/sca5y24.gif), the 5- year, 24-hour event for this project is 0.40. 7.3.1. Weather Tracking The QSP should daily consult the National Oceanographic and Atmospheric Administration (NOAA) for the weather forecasts. These forecasts shall be obtained at AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 31 JANUARY 2023 http://www.srh.noaa.gov/. Weather reports should be printed and maintained with the SWPPP in CSMP Attachment 1 “Weather Reports”. Weather reports and forecasts from sources other than NOAA are unacceptable. 7.3.2. Rain Gauges The Project owner/LRP shall provide a minimum of one rain gauge(s) on the project site. The gauge shall be located in an open area away from obstructions such as trees or overhangs. The gauge shall be mounted on a post at a height of 3 to 5 feet with the gauge extending several inches beyond the post, making sure that the top of the gauge is level. The post shall not be in an area where rainwater can indirectly splash from sheds, equipment, trailers, etc. The rain gauge(s) shall be read and recorded following all qualifying rain events. Rain gauge readings shall be kept in CSMP Attachment 1 “Weather Records”, and/or in CSMP Attachment 2 “Monitoring Records”. Rain gauge instructions shall be followed to obtain accurate measurements. Once the rain gauge reading has been recorded, accumulated rain shall be emptied, and the gauge reset. The reported local NOAA rainfall amount shall be compared with the site rain gauge. 7.4. Monitoring Locations Monitoring locations are shown on the Site Map in Appendix B. Monitoring locations are described in Sections 7.6 and 7.7. Whenever changes in the construction site might affect the appropriateness of sampling locations, the sampling locations shall be revised accordingly. All such revisions shall be implemented as soon as feasible and the SWPPP amended. Temporary changes that result in a one-time additional sampling location do not require a SWPPP amendment. 7.5. Safety and Monitoring Exemptions Safety practices for sample collection will be in accordance with the Contractor’s Health and Safety Plan. This project is not required to collect samples or conduct visual observations (inspections) under the following conditions: · During dangerous weather conditions such as flooding and electrical storms. · Outside of scheduled site business hours. Scheduled site business hours are listed below: (QSP shall modify work hours as necessary) Monday – Saturday: 7:00AM – 7:00PM Sunday/ Holidays: None If monitoring (visual monitoring or sample collection) of the site is unsafe because of the dangerous conditions noted above, then the QSP shall document the conditions for why an exception to performing the monitoring was necessary. The exemption documentation shall be filed in CSMP Attachment 2 “Monitoring Records”. 7.6. Visual Monitoring Visual monitoring includes observations and inspections. Inspections of BMPs are required to identify and record BMPs that need maintenance to operate effectively, that have failed, or that could fail to operate as intended. Visual observations of the site are required to observe stormwater drainage areas to identify any spills, leaks, or uncontrolled pollutant sources. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 32 JANUARY 2023 Table 7.1 identifies the required frequency of visual observations and inspections. Inspections and observations will be conducted at the locations identified in Section 7.6.3 and shown on the Site Map in Appendix B. Table 7.1 Summary of Visual Monitoring and Inspections Type of Inspection Frequency Routine Inspections BMP Inspections Weekly1 BMP Inspections – Tracking Control Daily Non-Stormwater Discharge Observations Quarterly during daylight hours Rain Event Triggered Inspections Site Inspections Prior to a Qualifying Event Within 48 hours of a qualifying event 2 BMP Inspections During an Extended Storm Event Every 24-hour period of a rain event3 Site Inspections Following a Qualifying Event Within 48 hours of a qualifying event2 1 Most BMPs must be inspected weekly; those identified below must be inspected more frequently. 2 Inspections are required during scheduled site operating hours. 3 Inspections are required during scheduled site operating hours regardless of the amount of precipitation on any given day. 7.6.1. Routine Observations and Inspections Routine site inspections and visual monitoring are necessary to ensure that the project is in compliance with the requirements of the Construction General Permit. 7.6.1.1. Routine BMP Inspections Inspections of BMPs are conducted to identify and record: · BMPs that are properly installed; · BMPs that need maintenance to operate effectively; · BMPs that have failed; or · BMPs that could fail to operate as intended. · All applicable items listed in Section 1.7 of this SWPPP 7.6.1.2. Non-Stormwater Discharge Observations Each drainage area will be inspected for the presence of or indications of prior unauthorized and authorized non-stormwater discharges. Inspectors will record: · Presence or evidence of any non-stormwater discharge (authorized or unauthorized); · Pollutant characteristics (floating and suspended material, sheen, discoloration, turbidity, odor, etc.); and · Source of discharge. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 33 JANUARY 2023 · All applicable items listed in Section 1.7 of this SWPPP 7.6.2. Rain-Event Triggered Observations and Inspections Visual observations of the site and inspections of BMPs are required prior to a qualifying rain event; following a qualifying rain event, and every 24-hour period during a qualifying rain event. Pre-rain inspections will be conducted after consulting NOAA and determining that a precipitation event with a 50% or greater probability 0.50 inches minimum of precipitation has been predicted. 7.6.2.1. Visual Observations Prior to a Forecasted Qualifying Rain Event Within 48-hours prior to a qualifying event a stormwater visual monitoring site inspection will include observations of the following locations: · Stormwater drainage areas to identify any spills, leaks, or uncontrolled pollutant sources; · BMPs to identify if they have been properly implemented; · Any stormwater storage and containment areas to detect leaks and ensure maintenance of adequate freeboard. 7.6.2.2. BMP Inspections During an Extended Storm Event During an extended rain event BMP inspections will be conducted to identify and record: · BMPs that are properly installed; · BMPs that need maintenance to operate effectively; · BMPs that have failed; or · BMPs that could fail to operate as intended. If the construction site is not accessible during the rain event, the visual inspections shall be performed at all relevant outfalls, discharge points, downstream locations. The inspections should record any projected maintenance activities. 7.6.2.3. Visual Observations Following a Qualifying Rain Event Within 48 hours following a qualifying rain event (min. 0.50 inches of rain) a stormwater visual monitoring site inspection is required to observe: · Stormwater drainage areas to identify any spills, leaks, or uncontrolled pollutant sources; · BMPs to identify if they have been properly designed, implemented, and effective; · Need for additional BMPs; · Any stormwater storage and containment areas to detect leaks and ensure maintenance of adequate freeboard; and · Discharge of stored or contained rain water. 7.6.3. Visual Monitoring Procedures Visual monitoring shall be conducted by the QSP or staff trained by and under the supervision of the QSP. The name(s) and contact number(s) of the site visual monitoring personnel are listed below and their training qualifications are provided in Appendix K. Assigned inspector: To Be Determined Contact phone: Alternate inspector: Contact phone: AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 34 JANUARY 2023 Stormwater observations shall be documented on the Visual Inspection Field Log Sheet (see CSMP Attachment 3 “Example Forms”). BMP inspections shall be documented on the site- specific BMP inspection checklist. Any photographs used to document observations will be referenced on stormwater site inspection reports and maintained with the Monitoring Records in CSMP Attachment 2. The QSP shall within two days of the inspection submit copies of the completed inspection report to the LRP. The completed reports will be kept in CSMP Attachment 2 “Monitoring Records”. 7.6.4. Visual Monitoring Follow-Up and Reporting Correction of deficiencies identified by the observations or inspections, including required repairs or maintenance of BMPs, shall be initiated, and completed as soon as possible. If identified deficiencies require design changes, including additional BMPs, the implementation of changes will be initiated within 72 hours of identification and be completed as soon as possible. When design changes to BMPs are required, the SWPPP shall be amended to reflect the changes. Deficiencies identified in site inspection reports and correction of deficiencies will be tracked on the Inspection Field Log Sheet or BMP Inspection Report and shall be submitted to the LRP and shall be kept in CSMP Attachment 2 “Monitoring Records”. The QSP shall within 48 hours of the inspection submit copies of the completed Inspection Field Log Sheet or BMP Inspection Report with the corrective actions to the LRP. Results of visual monitoring must be summarized and reported in the Annual Report. 7.6.5. Visual Monitoring Locations The inspections and observations identified in Sections 7.6.1 and 7.6.2 will be conducted at the locations identified in this section. BMP locations are shown on the Site Map in Appendix B. Recommended visual site monitoring locations are shown on the Site Map in Appendix B. It is expected that the QSP will revise/update the visual monitoring sites as required based upon the construction activities occurring on the project site. Site drainage sub-watershed areas are delineated on the Site Map in Appendix B. 7.7. Water Quality Sampling and Analysis 7.7.1. Sampling and Analysis Plan for Non-Visible Pollutants in Stormwater Runoff Discharges The sampling and analysis strategy and schedule for monitoring non-visible pollutants in stormwater runoff discharges from the project site is described below. Sampling for non-visible pollutants will be conducted when (1) a breach, leakage, malfunction, or spill is observed; and (2) the leak or spill has not been cleaned up prior to the rain event; and (3) there is the potential for discharge of non-visible pollutants to surface waters or drainage system. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 35 JANUARY 2023 The following construction materials, wastes, or activities, as identified in Section 2.6, are potential sources of non-visible pollutants to stormwater discharges from the project. Storage, use, and operational locations are shown on the Site Map in Appendix B. · Adhesives · Concrete · Sanitary Waste · Solid Waste · Vehicle and Equipment Use · Planting/ Vegetation Management The following existing site features, as identified in Section 2.6, are potential sources of non- visible pollutants to stormwater discharges from the project. Locations of existing site features contaminated with non-visible pollutants are shown on the Site Maps in Appendix B. · NONE The following soil amendments have the potential to change the chemical properties, engineering properties, or erosion resistance of the soil and will be used on the project site. Locations of soil amendment application are shown on the Site Map in Appendix B. · NONE The project has the potential to receive stormwater run-on from the following locations with the potential to contribute non-visible pollutants to stormwater discharges from the project. Locations of such run-on to the project site are shown on the Site Map in Appendix B. · Existing Adjacent Properties · Tank Farm Creek upstream of Tract Boundary 7.7.1.1. Sampling Schedule Samples for the potential non-visible pollutant(s) and a sufficiently large unaffected background sample shall be collected during the first two hours of site discharge from rain events that result in a sufficient discharge for sample collection. Samples shall be collected during the site’s scheduled hours and shall be collected regardless of the time of year and phase of the construction. Collection of discharge samples for non-visible pollutant monitoring will be triggered when any of the following conditions are observed during site inspections conducted prior to or during a rain event. · Materials or wastes containing potential non-visible pollutants are not stored under watertight conditions. Watertight conditions are defined as (1) storage in a watertight container, (2) storage under a watertight roof or within a building, or (3) protected by temporary cover and containment that prevents stormwater contact and runoff from the storage area. · Materials or wastes containing potential non-visible pollutants are stored under watertight conditions, but (1) a breach, malfunction, leakage, or spill is observed, (2) the leak or spill is not cleaned up prior to the rain event, and (3) there is the potential for discharge of non-visible pollutants to surface waters or a storm drain system. · A construction activity, including but not limited to those in Section 2.6, with the potential to contribute non-visible pollutants (1) was occurring during or within 24 hours prior to the rain event, (2) BMPs were observed to be breached, malfunctioning, or improperly AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 36 JANUARY 2023 implemented, and (3) there is the potential for discharge of non-visible pollutants to surface waters or a storm drain system. · Soil amendments that have the potential to change the chemical properties, engineering properties, or erosion resistance of the soil have been applied, and there is the potential for discharge of non-visible pollutants to surface waters or a storm drain system. · Stormwater runoff from an area contaminated by historical usage of the site has been observed to combine with stormwater runoff from the site, and there is the potential for discharge of non-visible pollutants to surface waters or a storm drain system. 7.7.1.2. Sampling Locations Sampling locations are based on proximity to planned non-visible pollutant storage, occurrence, or use; accessibility for sampling, and personnel safety. For this project, the non-visible pollutant sampling locations shall be the same as the sampling sites shown on the Site Map. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 37 JANUARY 2023 Sixteen (16) sampling location on the project site and the contractor’s yard have been identified for the collection of samples of runoff from planned material and waste storage areas and areas where non-visible pollutant producing construction activities are planned. Table 7.5 Non-Visible Pollutant Sample Locations – Site Run-off Sample Location Number Sample Location Description Sample Location Latitude and Longitude (Decimal Degrees) 4 Construction Staging Area (Located in Phase 3) LAT: N035° 14’ 26.07” LONG: W120° 40’ 09.98” 5 Phase 3 storm drain bypass outlet, south of Future Lot Ph3-40 LAT: N035° 14’ 22.39” LONG: W120° 40’ 04.49” 6 East of Future Foxtrot Court (Phase 2) LAT: N035° 14’ 20.06” LONG: W120° 40’ 07.19” 7 Southwest outlet of Bypass Channel, south of Future Lot Ph2-2 (Phase 2) LAT: N035° 14’ 17.64” LONG: W120° 40’ 13.37” 9 Northwest corner of Future Lot 197 (Phase 4) LAT: N035° 14’ 22.60” LONG: W120° 39’ 57.69” 11 Southwest corner of Future Lot 201 at Jespersen/ Buckley intersection (Phase 4, storm drain inlet) LAT: N035° 14’ 10.17” LONG: W120° 39’ 59.99” 13 Northeast corner of Future Lot Ph3-100,south of Venture Drive (Phase 3) LAT: N035° 14’ 23.83” LONG: W120° 40’ 02.14” 14 Basin H-1 Spillway, west of Future Lot Ph5-56 (Phase 5) LAT: N035° 14’ 20.37” LONG: W120° 40’ 05.14” 15 Storm drain outlet/ Basin H-2 Spillway, north of Future Lot Ph5-101 LAT: N035° 14’ 19.49” LONG: W120° 40’ 06.32” 16 South outlet of Bypass Channel, south of Future Lot Ph2-8 (Phase 2) LAT: N035° 14’ 17.27” LONG: W120° 40’ 11.32” 17 West of Future Lot Ph5-1 (Phase 5) LAT: N035° 14’ 13.47” LONG: W120° 40’ 15.32” 18 Storm drain #1 swale outlet at Tank Farm Creek, north of Buckley Road (Phase 5) LAT: N035° 14’ 09.65” LONG: W120° 40’ 21.11” 19 Downstream Tank Farm Creek, north of Buckley Road crossing LAT: N035° 14’ 08.99” LONG: W120° 40’ 28.76” 20 Downstream Tank Farm Creek, south of Buckley Road crossing LAT: N035° 14’ 7.77” LONG: W120° 40’ 29.93” 21 Basin J Spillway, north of Future Lot Ph5-1 (Phase 5) LAT: N035° 14’ 13.47” LONG: W120° 40’ 15.32” 22 Southwest of Future Lot Ph3-98, west of Kitty Hawk Ct (Phase 3, Perimeter swale) LAT: N035° 14’ 24.49” LONG: W120° 40’ 16.53” AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 38 JANUARY 2023 There are no areas within this project site that soil amendments will be applied. Therefore, zero (0) sampling locations have been identified for the collection of samples of runoff from drainage areas where soil amendments will be applied that have the potential to affect water quality. Table 7.6 Non-Visible Pollutant Sample Locations – Soil Amendment Areas Sample Location Number Sample Location Sample Location Latitude and Longitude (Decimal Degrees) N/A There are no areas within this project site that have been identified as contaminated by historical usage. Therefore, zero (0) sampling locations have been identified for the collection of samples of runoff from drainage areas contaminated by historical usage of the site. Table 7.7 Non-Visible Pollutant Sample Locations – Areas of Historical Contamination Sample Location Number Sample Location Sample Location Latitude and Longitude (Decimal Degrees) N/A One (1) sampling locations has been identified for the collection of an uncontaminated sample of runoff as a background sample for comparison with the samples being analyzed for non-visible pollutants. This location was selected such that the sample will not have come in contact with the operations, activities, or areas identified in Section 7.7.1 or with disturbed soils areas. Table 7.8 Non-Visible Pollutant Sample Locations – Background (Unaffected Sample) Sample Location Number Sample Location Sample Location Latitude and Longitude (Decimal Degrees) 3 Tank Farm Creek upstream of Tract 3089 northern boundary LAT: N035° 14’ 28.56” LONG: W120° 40’ 0.38” AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 39 JANUARY 2023 Five (5) sampling locations have been identified for the collection of samples of run-on to the project site. Run-on from these locations has the potential to combine with discharges from the site being sampled for non-visible pollutants. These samples are intended to identify potential sources of non-visible pollutants that originate off the project site. Table 7.9 Non-Visible Pollutant Sample Locations – Site Run-On Sample Location Number Sample Location Sample Location Latitude and Longitude (Decimal Degrees) 1 Future Lot Ph3-3 at Venture Drive (Perimeter swale inlet) LAT: N035° 14’ 22.40” LONG: W120° 40’ 16.61” 2 Future Lot Ph3-65 along Tract 3089 northern boundary (Perimeter swale) LAT: N035° 14’ 28.61” LONG: W120° 40’ 07.64” 8 Future Lot 201 along Tract 3089 eastern boundary (Perimeter run-on) LAT: N035° 14’ 26.65” LONG: W120° 39’ 44.96” 10 Future Lot 198/201 along Tract 3089 eastern boundary, upstream of wetland area (Perimeter run-on) LAT: N035° 14’ 15.12” LONG: W120° 39’ 47.22” 12 Future Lot 201 along Tract 3089 southeastern boundary (Perimeter run-on) LAT: N035° 14’ 28.47” LONG: W120° 40’ 48.46” If a stormwater visual monitoring site inspection conducted prior to or during a storm event identifies the presence of a material storage, waste storage, or operations area with spills or the potential for the discharge of non-visible pollutants to surface waters or a storm drain system that is at a location not listed above and has not been identified on the Site Maps, sampling locations will be selected by the QSP using the same rationale as that used to identify planned locations. Non-visible pollutant sampling locations shall be identified by the QSP on the pre-rain event inspection form and/or Rain Event Plan prior to a forecasted qualifying rain event. 7.7.1.3. Monitoring Preparation Non-visible pollutant samples will be collected by: QSP or QSP’s Designee ☒ Yes ☐ No Contractor ☐ Yes ☒ No Laboratory ☐ Yes ☒ No An adequate stock of monitoring supplies and equipment for monitoring non-visible pollutants will be available on the project site prior to a sampling event. Monitoring supplies and equipment will be stored in a cool temperature environment that will not come into contact with rain or direct sunlight. Sampling personnel will be available to collect samples in accordance with the sampling schedule. Supplies maintained at the project site will include, but are not limited to, clean powder-free nitrile gloves, sample collection equipment, coolers, appropriate number and volume of sample bottles, identification labels, re-sealable storage bags, paper towels, personal AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 40 JANUARY 2023 rain gear, ice, and Effluent Sampling Field Log Sheets and Chain of Custody (CoC) forms, which are provided in CSMP Attachment 3 “Example Forms”. Samples on the project site will be collected by: Company Name: To Be Determined Street Address: City, State Zip: Telephone Number: Point of Contact: Name of Sampler(s): Name of Alternate(s): The QSP or his/her designee will contact the designated laboratory or environmental consultant 24 hours prior to a predicted rain event or for an unpredicted event, as soon as a rain event begins if one of the triggering conditions is identified during an inspection to ensure that adequate sample collection personnel and supplies for monitoring non-visible pollutants are available and will be mobilized to collect samples on the project site in accordance with the sampling schedule. 7.7.1.4. Analytical Constituents Table 7.10 lists the specific sources and types of potential non-visible pollutants on the project site and the water quality indicator constituent(s) for that pollutant. Table 7.10 Potential Non-Visible Pollutants and Water Quality Indicator Constituents Pollutant Source Pollutant Water Quality Indicator Constituent Sanitary Waste Portable Toilets BOD, Total/ Fecal coliform Asphalt Work Paving/ grinding VOCs Vehicle and Equipment Use Batteries Sulfuric acid; Pb, pH 7.7.1.5. Sample Collection Samples of discharge shall be collected at the designated non-visible pollutant sampling locations shown on the Site Maps in Appendix B or in the locations determined by observed breaches, malfunctions, leakages, spills, operational areas, soil amendment application areas, and historical site usage areas that triggered the sampling event. Grab samples shall be collected and preserved in accordance with the methods identified in the Table, “Sample Collection, Preservation and Analysis for Monitoring Non-Visible Pollutants” provided in Section 7.7.1.6. Only the QSP, or personnel trained in water quality sampling under the direction of the QSP shall collect samples. Sample collection and handling requirements are described in Section 7.7.7. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 41 JANUARY 2023 7.7.1.6. Sample Analysis Samples shall be analyzed using the analytical methods identified in the Table 7.11. Samples will be analyzed by the following, or other ELAP certified Laboratory: Laboratory Name: Abalone Coast Analytical, OR Other ELAP Certified Laboratory Street Address: 141 Suburban Road, Suite C-1 City, State Zip: San Luis Obispo, CA 93401 Telephone Number: 805-595-1080 Point of Contact: Caitlin Galloway ELAP Certification #: 2661 Samples will be delivered to the laboratory by: QSP or QSP’s Designee ☒ Yes ☐ No Picked up by Laboratory Courier ☐ Yes ☒ No (Unless QSP is unavailable) Shipped ☐ Yes ☒ No (Unless QSP is unavailable) AV I L A R A N C H - P H A S E S 2 , 3 , 4 , 5 & 6 S W P P P 4 2 JA N U A R Y 2 0 2 3 Ta b l e 7 . 1 1 S a m p l e C o l l e c t i o n , P r e s e r v a t i o n a n d A n a l ys i s f o r M o n i t o r i n g N o n - V i s i b l e P o l l u t a n t s Co n s t i t u e n t A n a l y t i c a l M e t h o d Mi n i m u m Sa m p l e Vo l u m e Sa m p l e Co n t a i n e r s Sa m p l e P r e s e r v a t i o n Re p o r t i n g Li m i t Ma x i m u m Ho l d i n g Ti m e pH S M 4 5 0 0 - H B 1 0 0 m L P o l y p r o p y l e n e U N P R E S E R V E D 1 p H un i t 1 5 m i n s Tu r b i d i t y E P A 1 0 8 0 . 1 1 0 0 m L P o l y p r o p y l e n e U N P R E S E R V E D 0 . 0 2 N T U 4 8 h r s . Su s p e n d e d S e d i m e n t Co n c e n t r a t i o n ( S S C ) SM 2 5 4 0 D 5 0 0 m L P o l y p r o p y l e n e U N P R E S E R V E D 3 7 d a y s No t e s : A n y a d d i t i o n a l s u s p e c t e d n o n - v i s i b l e p o l l u t a nt s h a l l b e s a m p l e d f o r a n a l y s i s . C h e c k w i t h t h e l a b f o r s a m p l e a n d t e s t i n g re q u i r e m e n t s . AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 43 JANUARY 2023 7.7.1.7. Data Evaluation and Reporting The QSP shall complete an evaluation of the water quality sample analytical results. Runoff/downgradient results shall be compared with the associated upgradient/unaffected results and any associated run-on results. Should the runoff/downgradient sample show an increased level of the tested analyte relative to the unaffected background sample, which cannot be explained by run-on results, the BMPs, site conditions, and surrounding influences shall be assessed to determine the probable cause for the increase. As determined by the site and data evaluation, appropriate BMPs shall be repaired or modified to mitigate discharges of non-visible pollutant concentrations. Any revisions to the BMPs shall be recorded as an amendment to the SWPPP. The General Permit prohibits the stormwater discharges that contain hazardous substances equal to or in excess of reportable quantities established in 40 C.F.R. §§ 117.3 and 302.4. The results of any non-stormwater discharge results that indicate the presence of a hazardous substance in excess of established reportable quantities shall be immediately reported to the Regional Water Board and other agencies as required by 40 C.F.R. §§ 117.3 and 302.4. Results of non-visible pollutant monitoring shall be reported in the Annual Report. 7.7.2. Sampling and Analysis Plan for pH and Turbidity in Stormwater Runoff Discharges Sampling and analysis of runoff for pH and turbidity is required for this project. This Sampling and Analysis Plan describes the strategy for monitoring turbidity and pH levels of stormwater runoff discharges from the project site and run-on that may contribute to an exceedance of a Numeric Action Level (NAL) or the exceedance of a Receiving Water Monitoring Trigger. Samples for turbidity will be collected from all drainage areas with disturbed soil areas and samples for pH will be collected from all drainage areas with a high risk of pH altering discharge. 7.7.2.1. Sampling Schedule Stormwater runoff samples shall be collected for turbidity from each day of a qualifying rain event that results in a discharge from the project site. At a minimum, turbidity samples will be collected from each site discharge location draining a disturbed area. A minimum of three samples will be collected per day of discharge during a qualifying event. Samples should be representative of the total discharge from the project each day of discharge during the qualifying event. Typically, representative samples will be spaced in time throughout the daily discharge event. Stormwater runoff samples shall be collected for pH from each day of qualifying rain events that result in a discharge from the project site. Note that pH samples are only required to be collected during project phases and from drainage areas with a high risk of pH altering discharge. A minimum of three samples will be collected per day of discharge during a qualifying event. Samples should be representative of the total discharge from the location each day of discharge during the qualifying event. Typically representative samples will be spaced in time throughout the daily discharge event. Stored or collected water from a qualifying storm event when discharged shall be tested for turbidity and pH (when applicable). Stored or collected water from a qualifying event may be sampled at the point it is released from the storage or containment area or at the site discharge location. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 44 JANUARY 2023 Run-on samples shall be collected whenever the QSP identifies that run-on has the potential to contribute to an exceedance of a NAL or the exceedance of a Receiving Water Monitoring Trigger. 7.7.2.2. Sampling Locations Sampling locations are based on the site runoff discharge locations and locations where run-on enters the site; accessibility for sampling; and personnel safety. Planned pH and turbidity sampling locations are shown on the Site Map in Appendix B and include the locations identified in Table 7.13 and Table 7-14. Sixteen (16) sampling locations on the project site have been identified for the collection of runoff samples. Table 7.12 also provides an estimate of the site’s area that drains to that location. Table 7.12 Turbidity and pH Runoff Sample Locations Sample Location Number Sample Location Estimate of Site (%) 4 Construction Staging Area (Located in Phase 3) 1.5 5 Phase 3 storm drain bypass outlet, south of Future Lot Ph3-40 N/A (North boundary bypass culvert) 6 East of Future Foxtrot Court (Phase 2) 12.1 7 Southwest outlet of Bypass Channel, south of Future Lot Ph2-2 (Phase 2) 20 9 Northwest corner of Future Lot 197 (Phase 4) 5.5 11 Southwest corner of Future Lot 201 at Jespersen/ Buckley intersection (Phase 4, storm drain inlet) 7.8 13 Northeast corner of Future Lot Ph3-100,south of Venture Drive (Phase 3) 3.7 14 Basin H-1 Spillway, west of Future Lot Ph5-56 (Ph5) 4.1 15 Storm drain outlet/ Basin H-2 Spillway, north of Future Lot Ph5- 101 3.9 16 South outlet of Bypass Channel, south of Future Lot Ph2-8 (Phase 2) 20 17 West of Future Lot Ph5-1 (Phase 5) 0.5 18 Storm drain #1 swale outlet at Tank Farm Creek, north of Buckley Road (Phase 5) 26.6 19 Downstream Tank Farm Creek, north of Buckley Road crossing 99.5 20 Downstream Tank Farm Creek, south of Buckley Road crossing 100 21 Basin J Spillway, north of Future Lot Ph5-1(Phase 5) 7.5 22 Southwest of Future Lot Ph3-98, west of Kitty Hawk Ct (Phase 3, Perimeter swale) 3.2 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 45 JANUARY 2023 Six (6) sampling locations have been identified for the collection of run-on samples where the run-on has the potential to contribute to an exceedance of an NAL. Table 7.13 identifies the run-on sample locations Table 7.13 Turbidity and pH Run-On Sample Locations Sample Location Number Sample Location Sample Location Latitude and Longitude (Decimal Degrees) 1 Future Lot Ph3-3 at Venture Drive (Perimeter swale inlet) LAT: N035° 14’ 22.40” LONG: W120° 40’ 16.61” 2 Future Lot Ph3-65 along Tract 3089 northern boundary (Perimeter swale) LAT: N035° 14’ 28.61” LONG: W120° 40’ 07.64” 3 Tank Farm Creek upstream of Tract 3089 northern boundary LAT: N035° 14’ 28.56” LONG: W120° 40’ 0.38” 8 Future Lot 201 along Tract 3089 eastern boundary (Perimeter run-on) LAT: N035° 14’ 26.65” LONG: W120° 39’ 44.96” 10 Future Lot 198/201 along Tract 3089 eastern boundary, upstream of wetland area (Perimeter run-on) LAT: N035° 14’ 15.12” LONG: W120° 39’ 47.22” 12 Future Lot 201 along Tract 3089 southeastern boundary (Perimeter run- on) LAT: N035° 14’ 28.47” LONG: W120° 40’ 48.46” 7.7.2.3. Monitoring Preparation Turbidity and pH samples will be collected by: Contractor ☐Yes ☒ No QSP or QSP’s Designee ☒Yes ☐ No Laboratory ☐Yes ☒ No Samples on the project site will be collected by the following sampling personnel: Name/Telephone Number: To be determined An adequate stock of monitoring supplies and equipment for monitoring turbidity and will be available on the project site prior to a sampling event. Monitoring supplies and equipment will be stored in a cool temperature environment that will not come into contact with rain or direct sunlight. Sampling personnel will be available to collect samples in accordance with the sampling schedule. Supplies maintained at the project site will include, but are not limited to, field meters, extra batteries; clean powder-free nitrile gloves, sample collection equipment, appropriate sample containers, paper towels, personal rain gear, and Effluent Sampling Field Log Sheets and Chain of Custody forms provided in CSMP Attachment 3 “Example Forms”. The QSP or QSP’s designee will obtain and maintain the field testing instruments, as identified in Section 7.7.2.6, for analyzing samples in the field by contractor sampling personnel. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 46 JANUARY 2023 Samples on the project site will be collected by the following QSP or QSP’s designee: Company Name: To be determined Street Address: City, State, Zip: Telephone Number: Point of Contact: Name of Sampler(s): Name of Alternate(s): The QSP or his/her designee will contact sampling personnel 24 hours prior to a predicted rain event or for an unpredicted event, as soon as a rain event begins to ensure that adequate sample collection personnel, supplies for monitoring pH and turbidity are available and will be mobilized to collect samples on the project site in accordance with the sampling schedule. 7.7.2.4. Field Parameters Samples shall be analyzed for the constituents indicated in Table 7.14. Table 7.14 Sample Collection and Analysis for Monitoring Turbidity and pH Parameter Test Method Minimum Sample Volume(1) Sample Collection Container Type Detection Limit (minimum) Maximum Holding Time Turbidity EPA 1080.1 100 mL Polypropylene or Glass (Do not collect in meter sample cells) 0.02 NTU 48 hrs. pH SM4500-HB 100 mL Polypropylene 1 pH unit 15 mins. Notes: 1 Minimum sample volume recommended. Specific volume requirements will vary by instrument; check instrument manufacturer instructions. L – Liter mL – Milliliter NTU – Nephelometric Turbidity Unit 7.7.2.5. Sample Collection Samples of discharge shall be collected at the designated runoff and run-on sampling locations shown on the Site Map in Appendix B. Run-on samples shall be collected within close proximity of the point of run-on to the project. Only personnel trained in water quality sampling and field measurements working under the direction of the QSP shall collect samples. Sample collection and handling requirements are described in Section 7.7.7. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 47 JANUARY 2023 7.7.2.6. Field Measurements Samples collected for field analysis, collection, analysis, and equipment calibration shall be in accordance with the field instrument manufacturer’s specifications. Immediately following collection, samples for field analysis shall be tested in accordance with the field instrument manufacturer’s instructions and results recorded on the Effluent Sampling Field Log Sheet. The field instrument(s) listed in Table 7.15 will be used to analyze the following constituents: Table 7.15 Field Instruments (To be filled in by the QSP as necessary) Field Instrument (Manufacturer and Model) Constituent pH Turbidity The manufacturers’ instructions are included in CSMP Attachment 4 “Field Meter Instructions”. Field sampling staff shall review the instructions prior to each sampling event and follow the instructions in completing measurement of the samples. · The instrument(s) shall be maintained in accordance with manufacturer’s instructions. · The instrument(s) shall be calibrated before each sampling and analysis event. · Maintenance and calibration records shall be maintained with the SWPPP. The QSP may authorize alternate equipment provided that the equipment meets the Construction General Permit’s requirements and the manufacturers’ instructions for calibration and use are added to CSMP Attachment 4 “Field Meter Instructions”. 7.7.2.7. Data Evaluation and Reporting Immediately upon completing the measurements for the sampling event, provide the Effluent Sampling Field Log Sheets to the QSP for evaluation. Numeric Action Levels This project is subject to NALs for pH and turbidity (Table 7.16). Compliance with the NAL for pH and turbidity is based on a daily average of the three samples obtained at the project discharge sampling location. Upon receiving the field log sheets, the QSP shall immediately calculate the average of the turbidity samples, and the logarithmic average of the pH samples1 to determine if the NALs, shown in the table below, have been exceeded. 1 Daily average pH values must be calculated through the logarithmic method. In order to calculate an average, you must: (1) Convert the pH measurements from logarithms to real numbers; (2) Take the average of the real numbers; and (3) Convert the average of the real numbers back to a logarithm. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 48 JANUARY 2023 Table 7.16 Numeric Action Levels Parameter Unit Daily Average pH pH units Lower NAL = 6.5 Upper NAL = 8.5 Turbidity NTU 250 NTU The QSP shall within two days of the sample collection submit copies of the completed Effluent Sampling Field Log Sheets to the LRP. In the event that the pH or turbidity NAL is exceeded, the QSP shall immediately notify the LRP and investigate the cause of the exceedance and identify corrective actions. Exceedances of NALs shall be electronically reported to the State Water Board by the LRP through SMARTs within 10 days of the conclusion of the storm event. If requested by the Regional Board, a NAL Exceedance report will be submitted. The NAL Exceedance Report must contain the following information: · Analytical method(s), method reporting unit(s), and MDL(s) of each parameter; · Date, place, time of sampling, visual observation, and/or measurements, including precipitation; and · Description of the current BMPs associated with the sample that exceeded the NAL and the proposed corrective actions taken. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 49 JANUARY 2023 7.7.3. Sampling and Analysis Plan for Non-Stormwater Discharges This Sampling and Analysis Plan for non-stormwater discharges describes the sampling and analysis strategy and schedule for monitoring pollutants in authorized and unauthorized non-stormwater discharges from the project site in accordance with the requirements of the Construction General Permit. Sampling of non-stormwater discharges will be conducted when an authorized or unauthorized non-stormwater discharge is observed discharging from the project site. In the event that non-stormwater discharges run-on to the project site from offsite locations, and this run-on has the potential to contribute to a violation of a NAL, the run-on will also be sampled. The following authorized non-stormwater discharges identified in Section 2.7, have the potential to be discharged from the project site. · NONE In addition to the above authorized stormwater discharges, some construction activities have the potential to result in an unplanned (unauthorized) non-stormwater discharge if BMPs fail. These activities include: · Onsite grading · Onsite bridge construction (grading and concrete) · Onsite culvert construction (grading and concrete) 7.7.3.1. Sampling Schedule Samples of authorized or unauthorized non-stormwater discharges shall be collected when they are observed. 7.7.3.2. Sampling Locations Samples shall be collected from the discharge point of the construction site where the non-stormwater discharge is running off the project site. Site discharge locations are shown on the Site Maps in SWPPP Appendix B and include the locations identified below. One (1) sampling location on the project site and the contractor’s yard have been identified where non-stormwater discharges may runoff from the project site. (Table 7.20) Table 7.20 Non-stormwater Discharge Sample Locations Sample Location Number Sample Location Sample Location Latitude and Longitude (Decimal Degrees) 4 Construction Staging Area (Located in Phase 3) LAT: N035° 14’ 26.07” LONG: W120° 40’ 09.98” AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 50 JANUARY 2023 Six (6) sampling locations have been identified for the collection of non-stormwater discharges that run-on to the project site (Table 7.21). Table 7.21 Non-stormwater Run-on Sample Locations Sample Location Number Sample Location Sample Location Latitude and Longitude (Decimal Degrees) 1 Future Lot Ph3-3 at Venture Drive (Perimeter swale inlet) LAT: N035° 14’ 22.40” LONG: W120° 40’ 16.61” 2 Future Lot Ph3-65 along Tract 3089 northern boundary (Perimeter swale) LAT: N035° 14’ 28.61” LONG: W120° 40’ 07.64” 3 Tank Farm Creek upstream of Tract 3089 northern boundary LAT: N035° 14’ 28.56” LONG: W120° 40’ 0.38” 8 Future Lot 201 along Tract 3089 eastern boundary (Perimeter run-on) LAT: N035° 14’ 26.65” LONG: W120° 39’ 44.96” 10 Future Lot 198/201 along Tract 3089 eastern boundary, upstream of wetland area (Perimeter run-on) LAT: N035° 14’ 15.12” LONG: W120° 39’ 47.22” 12 Future Lot 201 along Tract 3089 southeastern boundary (Perimeter run-on) LAT: N035° 14’ 28.47” LONG: W120° 40’ 48.46” 7.7.3.3. Monitoring Preparation Non-stormwater discharge samples will be collected by: Contractor Yes No Consultant Yes No (Unless QSP is unavailable) Laboratory Yes No (Unless QSP is unavailable) Samples on the project site will be collected by the following contractor sampling personnel: Name/Telephone Number: To be determined Alternate(s)/Telephone Number: An adequate stock of monitoring supplies and equipment for monitoring non-stormwater discharges will be available on the project site. Monitoring supplies and equipment will be stored in a cool temperature environment that will not come into contact with rain or direct sunlight. Personnel trained in sampling will be available to collect samples in accordance with the sampling schedule. Supplies maintained at the project site will include, but are not limited to, clean powder-free nitrile gloves, sample collection equipment, field meters, coolers, appropriate number and volume of sample bottles, identification labels, re-sealable storage bags, paper towels, personal rain gear, ice, and Effluent Sampling Field Log Sheets and Chain of Custody forms provided in CSMP Attachment 3 “Example Forms”. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 51 JANUARY 2023 The contractor will obtain and maintain the field testing instruments, as identified in Section 7.7.2, for analyzing samples in the field by contractor sampling personnel. Samples on the project site will be collected by the laboratory listed in Section 7.7.1.6 If necessary, the QSP or his/her designee will contact the laboratory, 24 hours prior to a planned non-stormwater discharge or as soon as an unplanned non-stormwater discharge is observed to ensure that adequate sample collection personnel, supplies for non-stormwater discharge monitoring are available and will be mobilized to collect samples on the project site in accordance with the sampling schedule. 7.7.3.4. Analytical Constituents All non-stormwater discharges that flow through a disturbed area shall, at minimum, be monitored for turbidity. All non-stormwater discharges that flow through an area where they are exposed to pH altering materials shall be monitored for pH. The QSP shall identify additional pollutants to be monitored for each non-stormwater discharge incident based on the source of the non-stormwater discharge. If the source of an unauthorized non-stormwater discharge is not known, monitoring for pH, turbidity, MBAS, TOC, and residual chlorine or chloramines is recommended to help identify the source of the discharge. Non-stormwater discharge run-on shall be monitored, at minimum, for pH and turbidity. The QSP shall identify additional pollutants to be monitored for each non-stormwater discharge incident based on the source of the non-stormwater discharge. If the source of an unauthorized non-stormwater discharge is not known, monitoring for pH, turbidity, MBAS, TOC, and residual chlorine or chloramines is recommended to help identify the source of the discharge. Table 7.22 lists the specific sources and types of potential non-visible pollutants on the project site and the water quality indicator constituent(s) for that pollutant. Table 7.22 Potential Non-Stormwater Discharge Pollutants and Water Quality Indicator Constituents Pollutant Source Pollutant Water Quality Indicator Constituent Disturbed Areas Sediment Turbidity Concrete Work pH pH 7.7.3.5. Sample Collection Samples shall be collected at the discharge locations where the non-stormwater discharge is leaving the project site. Potential discharge locations are shown on the Site Maps in Appendix B and identified in Section 7.7.4.2. Grab samples shall be collected and preserved in accordance with the methods identified in Table 7.23. Only personnel trained in water quality sampling under the direction of the QSP shall collect samples. Sample collection and handling requirements are described in Section 7.7.7. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 52 JANUARY 2023 7.7.3.6. Sample Analysis Samples shall be analyzed using the analytical methods identified in Table 7.23. 7.7.3.7. Data Evaluation and Reporting The QSP shall complete an evaluation of the water quality sample analytical results. Turbidity and pH results shall be evaluated for compliance with NALs as identified in Section 7.7.2.7. Runoff results shall also be evaluated for the constituents suspected in the non-stormwater discharge. Should the runoff sample indicate the discharge of a pollutant which cannot be explained by run-on results, the BMPs, site conditions, and surrounding influences shall be assessed to determine the probable cause for the increase. As determined by the site and data evaluation, appropriate BMPs shall be repaired or modified to mitigate discharges of non-visible pollutant concentrations. Any revisions to the BMPs shall be recorded as an amendment to the SWPPP. Non-storm water discharge results shall be submitted with the Annual Report. The General Permit prohibits the non-storm water discharges that contain hazardous substances equal to or in excess of reportable quantities established in 40 C.F.R. §§ 117.3 and 302.4. The results of any non-stormwater discharge results that indicate the presence of a hazardous substance in excess of established reportable quantities shall be immediately reported to the Regional Water Board. AV I L A R A N C H - P H A S E S 2 , 3 , 4 , 5 & 6 S W P P P 5 3 JA N U A R Y 2 0 2 3 Ta b l e 7 . 2 3 S a m p l e C o l l e c t i o n , P r e s e r v a t i o n a n d A n a l ys i s f o r M o n i t o r i n g P o l l u t a n t s i n N o n - S t o r m w a t e r D i sc h a r g e s Co n s t i t u e n t A n a l y t i c a l M e t h o d Mi n i m u m Sa m p l e Vo l u m e Sa m p l e B o t t l e S a m p l e P r e s e r v a t i o n Re p o r t i n g Li m i t Ma x i m u m Ho l d i n g Ti m e pH S M 4 5 0 0 - H B 1 0 0 m L P o l y p r o p y l e n e U N P R E S E R V E D 1 p H un i t 1 5 m i n s Tu r b i d i t y E P A 1 0 8 0 . 1 1 0 0 m L P o l y p r o p y l e n e U N P R E S E R V E D 0 . 0 2 N T U 4 8 h r s . Su s p e n d e d S e d i m e n t Co n c e n t r a t i o n ( S S C ) SM 2 5 4 0 D 5 0 0 m L P o l y p r o p y l e n e U N P R E S E R V E D 3 7 d a y s No t e s : A n y a d d i t i o n a l s u s p e c t e d n o n - s t o r m w a t e r d i s c ha r g e s o r p o l l u t a n t s s h a l l b e s a m p l e d f o r a n a l y s i s . C h e c k w i t h t h e l a b f o r s a m p l e a n d te s t i n g r e q u i r e m e n t s . AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 54 JANUARY 2023 7.7.4. Sampling and Analysis Plan for Other Pollutants Required by the Regional Water Board The Regional Water Board has not specified monitoring for additional pollutants. 7.7.5. Training of Sampling Personnel Sampling personnel shall be trained to collect, maintain, and ship samples in accordance with the Surface Water Ambient Monitoring program (SWAMP) 2008 Quality Assurance Program Plan (QAPrP). Training records of designated contractor sampling personnel are provided in Appendix K. 7.7.6. Sample Collection and Handling 7.7.6.1. Sample Collection Samples shall be collected at the designated sampling locations shown on the Site Map in Appendix B and listed in the preceding sections. Samples shall be collected, maintained, and shipped in accordance with the SWAMP 2008 Quality Assurance Program Plan (QAPrP). Grab samples shall be collected and preserved in accordance with the methods identified in preceding sections. To maintain sample integrity and prevent cross-contamination, sample collection personnel shall follow the protocols below. · Collect samples (for laboratory analysis) only in analytical laboratory-provided sample containers; · Wear clean, powder-free nitrile gloves when collecting samples; · Change gloves whenever something not known to be clean has been touched; · Change gloves between sites; · Decontaminate all equipment (e.g. bucket, tubing) prior to sample collection using a trisodium phosphate water wash, distilled water rinse, and final rinse with distilled water. (Dispose of wash and rinse water appropriately, i.e., do not discharge to storm drain or receiving water). Do not decontaminate laboratory- provided sample containers; · Do not smoke during sampling events; · Never sample near a running vehicle; · Do not park vehicles in the immediate sample collection area (even non-running vehicles); · Do not eat or drink during sample collection; and · Do not breathe, sneeze, or cough in the direction of an open sample container. The most important aspect of grab sampling is to collect a sample that represents the entire runoff stream. Typically, samples are collected by dipping the collection container in the runoff flow paths and streams as noted below. i. For small streams and flow paths, simply dip the bottle facing upstream until full. ii. For larger stream that can be safely accessed, collect a sample in the middle of the flow stream by directly dipping the mouth of the bottle. Once again making sure that the opening of the bottle is facing upstream as to avoid any contamination by the sampler. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 55 JANUARY 2023 iii. For larger streams that cannot be safely waded, pole-samplers may be needed to safely access the representative flow. iv. Avoid collecting samples from ponded, sluggish or stagnant water. v. Avoid collecting samples directly downstream from a bridge as the samples can be affected by the bridge structure or runoff from the road surface. Note, that depending upon the specific analytical test, some containers may contain preservatives. These containers should never be dipped into the stream, but filled indirectly from the collection container. SSC samples should be taken as a normal grab sample, where the bottle is submerged facing upstream and filled. SSC samples need to be collected in a separate bottle because the analysis requires the entire volume of the bottle. Do not collect in a larger container and partition into the laboratory sample container. 7.7.6.2. Sample Handling The pH measurements must be conducted immediately. Turbidity samples for laboratory analysis must be handled as follows. Immediately following sample collection: · Cap sample containers; · Complete sample container labels; · Sealed containers in a re-sealable storage bag; · Place sample containers into an ice-chilled cooler; · Document sample information on the Effluent Sampling Field Log Sheet; and · Complete the Chain of Custody form. All samples for laboratory analysis must be maintained between 0-6 degrees Celsius (32-42.8 degrees Fahrenheit) during delivery to the laboratory. Samples must be kept on ice, or refrigerated, from sample collection through delivery to the laboratory. Place samples to be shipped inside coolers with ice. Make sure the sample bottles are well packaged to prevent breakage and secure cooler lids with packaging tape. Ship samples that will be laboratory analyzed to the analytical laboratory right away. Hold times are measured from the time the sample is collected to the time the sample is analyzed. The General Permit requires that samples be received by the analytical laboratory within 48 hours of the physical sampling (unless required sooner by the analytical laboratory). Laboratory Name: Abalone Coast Analytical (or other approved equal analytical laboratory) Address: 141 Suburban Road, Suite C-1 City, State Zip: San Luis Obispo, CA 93401 Telephone Number: 805-595-1080 Point of Contact: Caitlin Galloway 7.7.6.3. Sample Documentation Procedures All original data documented on sample bottle identification labels, Effluent Sampling Field Log Sheet, and Chain of Custody forms shall be recorded using waterproof ink. These shall be considered accountable documents. If an error is made on an accountable document, the AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 56 JANUARY 2023 individual shall make corrections by lining through the error and entering the correct information. The erroneous information shall not be obliterated. All corrections shall be initialed and dated. Duplicate samples shall be identified consistent with the numbering system for other samples to prevent the laboratory from identifying duplicate samples. Duplicate samples shall be identified in the Effluent Sampling Field Log Sheet. Sample documentation procedures include the following: Sample Bottle Identification Labels: Sampling personnel shall attach an identification label to each sample bottle. Sample identification shall uniquely identify each sample location. Field Log Sheets: Sampling personnel shall complete the Effluent Sampling Field Log Sheet and Receiving Water Sampling Field Log Sheet for each sampling event, as appropriate. Chain of Custody: Sampling personnel shall complete the form for each sampling event for which samples are collected for laboratory analysis. The sampler will sign the form when the sample(s) is turned over to the testing laboratory or courier. 7.8. Active Treatment System Monitoring An Active Treatment System (ATS) will be deployed on the site? ☐Yes ☒No This project does not require a project specific Sampling and Analysis Plan for an ATS because deployment of an ATS is not planned. 7.9. Watershed Monitoring Option This project is not participating in a watershed monitoring option. 7.10. Quality Assurance and Quality Control An effective Quality Assurance and Quality Control (QA/QC) plan shall be implemented as part of the CSMP to ensure that analytical data can be used with confidence. QA/QC procedures to be initiated include the following: · Field logs; · Clean sampling techniques; · Chain of Custody forms; · QA/QC Samples; and · Data verification. Each of these procedures is discussed in more detail in the following sections. 7.10.1. Field Logs The purpose of field logs is to record sampling information and field observations during monitoring that may explain any uncharacteristic analytical results. Sampling information to be included in the field log include the date and time of water quality sample collection, sampling personnel, sample container identification numbers, and types of samples that were collected. Field observations should be noted in the field log for any abnormalities at the sampling location (color, odor, BMPs, etc.). Field measurements for pH and turbidity should also be recorded in the field log. A Visual Inspection Field Log Sheet and an Effluent Sampling Field Log Sheet, are included in CSMP Attachment 3 “Example Forms”. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 57 JANUARY 2023 7.10.2. Clean Sampling Techniques Clean sampling techniques involve the use of certified clean containers for sample collection and clean powder-free nitrile gloves during sample collection and handling. As discussed in Section 7.7.7, adoption of a clean sampling approach will minimize the chance of field contamination and questionable data results. 7.10.3. Chain of Custody (CoC) The sample CoC is an important documentation step that tracks samples from collection through analysis to ensure the validity of the sample. Sample CoC procedures include the following: · Proper labeling of samples; · Use of CoC forms for all samples; and · Prompt sample delivery to the analytical laboratory. Analytical laboratories usually provide CoC forms to be filled out for sample containers. A copy of a Chain of Custody Form for Abalone Coast Analytical is included in CSMP Attachment 3 “Example Forms”. 7.10.4. QA/QC Samples QA/QC samples provide an indication of the accuracy and precision of the sample collection; sample handling; field measurements; and analytical laboratory methods. The following types of QA/QC will be conducted for this project: ☒ Field Duplicates at a frequency of 1 duplicate per sampling event (Required for all sampling plans with field measurements or laboratory analysis) ☒ Equipment Blanks (Only needed if equipment used to collect samples could add the pollutants to sample) ☒ Field Blanks at a frequency of 1 duplicate per sampling event (Only required if sampling method calls for field blanks) ☒ Travel Blanks (Required for sampling plans that include VOC laboratory analysis) 7.10.4.1. Field Duplicates Field duplicates provide verification of laboratory or field analysis and sample collection. Duplicate samples shall be collected, handled, and analyzed using the same protocols as primary samples. The sample location where field duplicates are collected shall be randomly selected from the discharge locations. Duplicate samples shall be collected immediately after the primary sample has been collected. Duplicate samples must be collected in the same manner and as close in time as possible to the original sample. Duplicate samples shall not influence any evaluations or conclusion. 7.10.4.2. Equipment Blanks Equipment blanks provide verification that equipment has not introduced a pollutant into the sample. Equipment blanks are typically collected when: · New equipment is used; · Equipment that has been cleaned after use at a contaminated site; AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 58 JANUARY 2023 · Equipment that is not dedicated for surface water sampling is used; or · Whenever a new lot of filters is used when sampling metals. 7.10.4.3. Field Blanks Field blanks assess potential sample contamination levels that occur during field sampling activities. De-ioninzed water field blanks are taken to the field, transferred to the appropriate container, and treated the same as the corresponding sample type during the course of a sampling event. 7.10.4.4. Travel Blanks Travel blanks assess the potential for cross-contamination of volatile constituents between sample containers during shipment from the field to the laboratory. De-ioninzed water blanks are taken along for the trip and held unopened in the same cooler with the VOC samples. 7.10.5. Data Verification After results are received from the analytical laboratory, the QSP shall verify the data to ensure that it is complete, accurate, and the appropriate QA/QC requirements were met. Data must be verified as soon as the data reports are received. Data verification shall include: · Checking the CoC and laboratory reports. Make sure all requested analyses were performed and all samples are accounted for in the reports. · Checking laboratory reports to make sure hold times were met and that the reporting levels meet or are lower than the reporting levels agreed to in the contract. · Checking data for outlier values and follow up with the laboratory. Occasionally typographical errors, unit reporting errors, or incomplete results are reported and should be easily detected. These errors need to be identified, clarified, and corrected quickly by the laboratory. The QSP should especially note data that is an order of magnitude or more different than similar locations, or is inconsistent with previous data from the same location. · Checking laboratory QA/QC results. EPA establishes QA/QC checks and acceptable criteria for laboratory analyses. These data are typically reported along with the sample results. The QSP shall evaluate the reported QA/QC data to check for contamination (method, field, and equipment blanks), precision (laboratory matrix spike duplicates), and accuracy (matrix spikes and laboratory control samples). When QA/QC checks are outside acceptable ranges, the laboratory must flag the data, and usually provides an explanation of the potential impact to the sample results. · Checking the data set for outlier values and, accordingly, confirm results and re-analyze samples where appropriate. Sample re-analysis should only be undertaken when it appears that some part of the QA/QC resulted in a value out of the accepted range. Sample results may not be discounted unless the analytical laboratory identifies the required QA/QC criteria were not met and confirms this in writing. Field data including inspections and observations must be verified as soon as the field logs are received, typically at the end of the sampling event. Field data verification shall include: · Checking field logs to make sure all required measurements were completed and appropriately documented; AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 59 JANUARY 2023 · Checking reported values that appear out of the typical range or inconsistent; Follow-up immediately to identify potential reporting or equipment problems, if appropriate, recalibrate equipment after sampling; · Verifying equipment calibrations; · Reviewing observations noted on the field logs; and · Reviewing notations of any errors and actions taken to correct the equipment or recording errors. 7.11. Records Retention All records of stormwater monitoring information and copies of reports (including Annual Reports) must be retained for a period of at least five (5) years from date of submittal or longer if required by the Regional Water Board. Results of visual monitoring, field measurements, and laboratory analyses must be kept in the SWPPP along with CoCs, and other documentation related to the monitoring. Records are to be kept onsite while construction is ongoing. Records to be retained include: · The date, place, and time of inspections, sampling, visual observations, and/or measurements, including precipitation; · The individual(s) who performed the inspections, sampling, visual observation, and/or field measurements; · The date and approximate time of field measurements and laboratory analyses; · The individual(s) who performed the laboratory analyses; · A summary of all analytical results, the method detection limits and reporting limits, and the analytical techniques or methods used; · Rain gauge readings from site inspections; · QA/QC records and results; · Calibration records; · Visual observation and sample collection exemption records; and · The records of any corrective actions and follow-up activities that resulted from analytical results, visual observations, or inspections. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 60 JANUARY 2023 CSMP Attachment 1: Weather Reports QSP IS TO KEEP COPIES OF NOAA REPORTS IN THIS SECTION AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 61 JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 62 JANUARY 2023 CSMP Attachment 2: Monitoring Records QSP IS TO KEEP COPIES OF ANY MONITORING AND INSPECTION REPORTS IN THIS SECTION AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 63 JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 64 JANUARY 2023 CSMP Attachment 3: Example Forms AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 65 JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 66 JANUARY 2023 Rain Gauge Log Sheet Construction Site Name: Tract 3089 Phases 2, 3, 4, 5 & 6 Mass Grading of Avila Ranch WDID #: Date (mm/dd/yy) Time (24-hr) Initials Rainfall Depth (Inches) Total Storm- Event Rainfall (Inches) Notes: AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 67 JANUARY 2023 Risk Level 2 Visual Inspection Field Log Sheet Date and Time of Inspection: Report Date: Inspection Type: □ Weekly □ Before predicted rain □ During rain event □ Following qualifying rain event □ Contained stormwater release □ Quarterly non- stormwater Site Information Construction Site Name: Tract 3089 Phases 2, 3, 4, 5 & 6 Mass Grading of Avila Ranch Construction stage and completed activities: Approximate area of exposed site: Weather and Observations Date Rain Predicted to Occur: Predicted % chance of rain: Estimate storm beginning: (date and time) Estimate storm duration:_________ (hours) Estimate time since last storm: ____________ (days or hours) Rain gauge reading: __________ (inches) Observations: If yes identify location Odors Yes □ No □ Floating material Yes □ No □ Suspended Material Yes □ No □ Sheen Yes □ No □ Discolorations Yes □ No □ Turbidity Yes □ No □ Site Inspections Outfalls or BMPs Evaluated Deficiencies Noted (add additional sheets or attached detailed BMP Inspection Checklists) Photos Taken: Yes □ No □ Photo Reference IDs: Corrective Actions Identified (note if SWPPP/REAP change is needed) Inspector Information Inspector Name: Inspector Title: Signature: Date: AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 68 JANUARY 2023 Risk Level 2 Effluent Sampling Field Log Sheets Construction Site Name: Tract 3089 Phases 2, 3, 4, 5 & 6 Mass Grading of Avila Ranch Date: Time Start: Sampler: Sampling Event Type: □ Stormwater □ Non- stormwater □ Non-visible pollutant Field Meter Calibration pH Meter ID No./Desc.: Calibration Date/Time: Turbidity Meter ID No./Desc.: Calibration Date/Time: Field pH and Turbidity Measurements Discharge Location Description pH Turbidity Time Grab Samples Collected Discharge Location Description Sample Type Time Additional Sampling Notes: Time End: AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 69 JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 70 JANUARY 2023 Risk Level 2 Effluent Sampling Field Log Sheets Construction Site Name: Tract 3089 Phases 2, 3, 4, 5 & 6 Mass Grading of Avila Ranch Date: Time Start: Sampler: Sampling Event Type: □ Stormwater □ Non-stormwater □ Non-visible pollutant Field Meter Calibration pH Meter ID No./Desc.: Calibration Date/Time: Turbidity Meter ID No./Desc.: Calibration Date/Time: Field pH and Turbidity Measurements Discharge Location Description pH Turbidity Time Grab Samples Collected Discharge Location Description Other (specify) Time Additional Sampling Notes: Time End: AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 71 JANUARY 2023 NAL Exceedance Evaluation Summary Report Page __ of __ Project Name Project WDID Project Location Date of Exceedance Type of Exceedance NAL Daily Average pH Turbidity Other (specify) Measurement or Analytical Method Field meter (Sensitivity: ) Lab method (specify) (Reporting Limit: ) (MDL: ) Calculated Daily Average pH pH units Turbidity NTU Rain Gauge Measurement inches Compliance Storm Event inches (5-year, 24-hour event) Visual Observations on Day of Exceedance AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 72 JANUARY 2023 NAL Exceedance Evaluation Summary Report Page __ of __ Description of BMPs in Place at Time of Event Initial Assessment of Cause Corrective Actions Taken (deployed after exceedance) Additional Corrective Actions Proposed Report Completed By (Print Name, Title) Signature AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 73 JANUARY 2023 CSMP Attachment 4: Field Meter Instructions QSP IS TO PLACE COPIES OF INSTRUCTIONS IN THIS SECTION AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 74 JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 75 JANUARY 2023 CSMP Attachment 5: Supplemental Information AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 76 JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 77 JANUARY 2023 Section 8. References Avila Ranch Vesting Tentative Tract Map – TR 3089 Avila Ranch Development Plan Avila Ranch Tract 3089 – Mass Grading Plan for Phases 2, 3, 4, 5 & 6, prepared by Wallace Group (dated 12/21/2022) Avila Ranch Tract 3089 – Mass Grading Erosion & Sediment Control Plan for Phases 2, 3, 4, 5 & 6, prepared by Wallace Group (dated 12/21/2022) Drainage Report for Avila Ranch – Phases 2-6 Mass Grading Permit (dated January 2023), prepared by Wallace Group Stormwater Control Plan for Avila Ranch – Phases 2-6 Mass Grading Permit (dated 12/21/2022), prepared by Wallace Group Final Environmental Impact Report for the Avila Ranch Development – Tract 3089 State Water Resources Control Board (2009). Order 2009-0009-DWQ, NPDES General Permit No. CAS000002: National Pollutant Discharges Elimination System (NPDES) California General Permit for Storm Water Discharge Associated with Construction and Land Disturbing Activities. Available on-line at: http://www.waterboards.ca.gov/water_issues/programs/stormwater/construction.shtml. State Water Resources Control Board (2010). Order 2010-0014-DWQ, NPDES General Permit No. CAS000002: National Pollutant Discharges Elimination System (NPDES) California General Permit for Storm Water Discharge Associated with Construction and Land Disturbing Activities. Available on-line at: http://www.waterboards.ca.gov/water_issues/programs/stormwater/construction.shtml. State Water Resources Control Board (2012). Order 2012-0006-DWQ, NPDES General Permit No. CAS000002: National Pollutant Discharges Elimination System (NPDES) California General Permit for Storm Water Discharge Associated with Construction and Land Disturbing Activities. Available on-line at: http://www.waterboards.ca.gov/water_issues/programs/stormwater/construction.shtml. CALTRANS 2017, Caltrans Site Best Management Practices (BMP) Manual, including Caltrans SWQ BMP Fact Sheets. https://dot.ca.gov/-/media/dot-media/programs/construction/documents/environmental- compliance/csbmp-may-2017-final.pdf AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP 78 JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix A: Calculations AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Project:1493-0007 Avila Ranch Date:January 2023 Construction Site Estimates Impervious Percentages and Runoff Coeficients (See Table 2.1 and Section 2.3 in SWPPP report) 0.30 0.20 Subcatch. ID Area (Ac.) Runoff Coefficient EX1 22.22 0.20 EX2 33.21 0.20 EX3 32.76 0.20 EX4 25.50 0.20 WSHD A area to North tract boundary and west of Earthwood (PH01) 3.12 0.30 Subtotal 116.80 -- 0.20 Subcatch. ID Area (Ac.) Runoff Coefficient MG Watershed 1 18.85 0.20 MG Watershed 2 4.82 0.20 MG Watershed 3 27.55 0.20 MG Watershed 4 11.80 0.20 MG Watershed 5 9.39 0.20 MG Watershed 6 40.54 0.20 Subtotal 112.94 -- Average C-value for Exist. On-site 0.20 Avg. C-value for Exist. On-site Condition *MG = Mass Grading Run-off Coefficients On-Site Existing Conditions On-Site Conditions after Mass Grading *See Mass Grading Drainage Report for Avila Ranch Phases 2, 3, 4, 5 & 6 Agriculutral Areas Sparse Vegetation Page 1 of 2 Project:1493-0007 Avila Ranch Date:January 2023 Construction Site Estimates Impervious Percentages and Runoff Coeficients (See Table 2.1 and Section 2.3 in SWPPP report) Description Area (Ac.) Concrete Swales with walls 0.08 Retaining walls 0.05 Auto Culverts 0.36 Subtotal 0.49 Impervious Land Use after Mass Grading Page 2 of 2 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix B: Site Maps AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Ph5-1 Ph5-2 Ph5-3 Ph5-4 Ph5-5 Ph5-6 Ph5-7 Ph5-8 Ph5-9 Ph5-10 Ph5-11 Ph5-12 Ph5-13 Ph5-14 Ph5-15 Ph5-16 Ph5-17 Ph5-18 Ph5-19 Ph5-20 Ph5-21 Ph5-22 Ph5-23 Ph5-24 Ph5-51 Ph5-52 Ph5-53 Ph5-54 Ph5-55 Ph5-25 Ph5-26 Ph5-27 Ph5-50 Ph5-49 Ph5-48 Ph5-47 Ph5-46 Ph5-28 Ph5-29 Ph5-30 Ph5-45 Ph5-44 Ph5-31 Ph5-32 Ph5-43 Ph5-42 Ph5-33 Ph5-34 Ph5-41 Ph5-40 Ph5-35 Ph5-36 Ph5-39 Ph5-38 Ph5-37 Ph5-95 Ph5-94 Ph5-93 Ph5-76 Ph5-75 Ph5-74 Ph5-73 Ph5-72 Ph5-71 Ph5-70Ph5-77Ph5-92 Ph5-91 Ph5-78 Ph5-69 Ph5-68Ph5-79Ph5-90 Ph5-89 Ph5-80 Ph5-67 Ph5-88 Ph5-81 Ph5-66 Ph5-65Ph5-82Ph5-87 Ph5-86 Ph5-83 Ph5-64 Ph5-63Ph5-84Ph5-85 Ph5-62 Ph5-61 Ph5-60 Ph5-59 Ph5-58 Ph5-57 Ph5-56 Ph5-96 Ph5-97 Ph5-98 Ph5-99 Ph5-100 Ph5-101 Ph2-28 Ph2-27 Ph2-24 Ph2-23 Ph2-22Ph2-25Ph2-26Ph2-29 Ph2-1 Ph2-2 Ph2-5 Ph2-4 Ph2-3 Ph2-8 Ph2-7 Ph2-6 Ph2-11 Ph2-10 Ph2-9 Ph2-14 Ph2-13 Ph2-12 Ph2-17 Ph2-16 Ph2-15 Ph2-18 Ph2-19 Ph2-21 Ph2-20 Ph3-1 Ph3-6 Ph3-5Ph3-2 Ph3-7 Ph3-8 Ph3-9Ph3-4Ph3-3 Ph3-10 Ph3-11 Ph3-13 Ph3-12 Ph3-15 Ph3-14 Ph3-16 Ph3-17 Ph3-18 Ph3-21 Ph3-20 Ph3-19 Ph3-24 Ph3-23 Ph3-22 Ph3-27 Ph3-26 Ph3-25 Ph3-28 Ph3-29 Ph3-30 Ph3-33 Ph3-32 Ph3-31 Ph3-34 Ph3-35 Ph3-36 Ph3-37 Ph3-38 Ph3-39 Ph3-40 Ph3-43 Ph3-42 Ph3-41 Ph3-44 Ph3-45 Ph3-46 Ph3-49 Ph3-48 Ph3-47 Ph3-50 Ph3-51 Ph3-52 Ph3-54 Ph3-53 Ph3-55 Ph3-56 Ph3-57 Ph3-58 Ph3-59 Ph3-60 Ph3-64 Ph3-63 Ph3-62 Ph3-61 Ph3-76 Ph3-75 Ph3-74 Ph3-73 Ph3-77 Ph3-78 Ph3-79 Ph3-80 Ph3-90 Ph3-89 Ph3-88 Ph3-87 Ph3-91 Ph3-92 Ph3-93 Ph3-94 Ph3-65 Ph3-66 Ph3-67 Ph3-70 Ph3-71 Ph3-72 Ph3-83 Ph3-82 Ph3-81 Ph3-84 Ph3-85 Ph3-86 192 193 197 194 195 196 199 198 200 201 Ph2-30 Ph3-95 Ph3-96 Ph3-97 Ph3-98 Ph3-99 Ph3-100 202 201 Ph6-2 Ph6-3 Ph5-102 Ph5-104 Ph5-105 Ph5-103 Ph5-106 6' CONSTRUCTION PARKING/ STAGING/ STOCKPILE AREA SD SD SD SD SD SDSD SD SD SD SD SD SD TEMPORARY STOCKPILE AREA 120 112 114 11 6 11 8 12 2 12 4 110 1 0 2 102 1 0 4 104104 1 0 6 10 6 10 6 10 6 10 6 10 8 1 0 8 108 108108 112 112 114 114 116116 110 112 112 112 11 4 1 1 4 1 2 0 120 12 0 130 1 3 0 12 011 7 11 8 11 9 12 1 12 2 12 3 12 4 120 130 11 0108 1 1 2 1 1 2 11 2112 1 1 2 114 116 118 11 0 1 2 0 1 0 8 11 2 11 4 11 6 1 1 8 9 8 1 1 5 12 0120120 120 12012 0120120120120 1 2 0 1 2 0 11 6 117 11 7 1 1 7 11 7 1 1 7 1 1 8 1 1 8 118 118 118 11 9 119 1 2 1 12 1 11 5 120 12 011 6 117 1 1 8 118 11 9 119 121 121 11 511 5 1 1 5 11 5 115 1 2 0 12 0 12 0 12 0 1 2 5 1 2 5 11 4 116 11 6 11 6 117 11 7 11 7 11 8 11 8 11 8 11 8 119 119 119 11 9 119 119 12 1 12 1 12 2 122 1 2 2 12 2 12 3 1 2 3 12 4 1 2 4 1 1 5 112 112 11 2 1 1 2 113 1 1 3 114 116 115 113 11 3 113 114 116 11 7117 115 1 1 5 1 1 5 113 114 113 114 122 11 0 10 2 1 0 4 1 0 6 1 0 8 11 2 1 2 0 1 1 4 1 1 4 1 1 4 1 1 6 1 1 8 122 1 2 0 1 1 9 115 11 6 113 11211 3 116 SAMPLE SITE #6 RUN-OFF LAT: N035° 14' 20.06" LONG: W120° 40' 07.19" SAMPLE SITE #3 RUN-ON LAT: N035° 14' 28.56" LONG: W120° 40' 00.38" SAMPLE SITE #5 RUN-OFF LAT: N035° 14' 22.39" LONG: W120° 40' 04.49" SAMPLE SITE #7 RUN-OFF LAT: N035° 14' 17.64" LONG: W120° 40' 13.37" SAMPLE SITE #1 RUN-ON LAT: N035° 14' 22.40" LONG: W120° 40' 16.61" SAMPLE SITE #2 RUN-ON LAT: N035° 14' 28.61" LONG: W120° 40' 07.64" SAMPLE SITE #10 RUN-ON FROM EAST PROPERTIES LAT: N035° 14' 15.12" LONG: W120° 39' 47.22" SAMPLE SITE #16 RUN-OFF LAT: N035° 14' 17.27" LONG: W120° 40' 11.32" SAMPLE SITE #8 RUN-ON LAT: N035° 14' 26.65" LONG: W120° 39' 44.96" SAMPLE SITE #4 LAT: N035° 14' 26.07" LONG: W120° 40' 09.98" SAMPLE SITE #9 SITE RUN-OFF LAT: N035° 14' 22.60" LONG: W120° 39' 57.69" SAMPLE SITE #11 RUN-OFF LAT: N035° 14' 10.17" LONG: W120° 39' 59.99" SAMPLE SITE #12 RUN-ON LAT: N035° 14' 09.54" LONG: W120° 39' 44.70" SAMPLE SITE #13 RUN-OFF LAT: N035° 14' 23.83" LONG: W120° 40' 02.14" SAMPLE SITE #14 RUN-OFF LAT: N035° 14' 20.37" LONG: W120° 40' 05.14" SAMPLE SITE #15 RUN-OFF LAT: N035° 14' 19.49" LONG: W120° 40' 06.32"SAMPLE SITE #16 RUN-OFF LAT: N035° 14' 17.27" LONG: W120° 40' 11.32" SAMPLE SITE #17 RUN-OFF LAT: N035° 14' 12.99" LONG: W120° 40' 16.34" SAMPLE SITE #18 RUN-OFF LAT: N035° 14' 09.65" LONG: W120° 40' 21.11" SAMPLE SITE #19 LAT: N035° 14' 08.99" LONG: W120° 40' 28.76" SAMPLE SITE #20 LAT: N035° 14' 07.77" LONG: W120° 40' 29.93" SAMPLE SITE #16 RUN-OFF LAT: N035° 14' 17.27" LONG: W120° 40' 11.32" SAMPLE SITE #21 RUN-OFF LAT: N035° 14' 13.47" LONG: W120° 40' 15.32" SAMPLE SITE #22 RUN-OFF LAT: N035° 14' 24.49" LONG: W120° 40' 16.53" T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF ® DATE SIGNED SIGNATURE These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. Copyright © 2023 Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. 321 4 6 321 4 6 B A ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS 0 1 2 3 5 5 C 7 7 D E F SHEET FILE NAME: 1493-0007-SWPP-SITE.DWG Plot Date: 1/16/2023 Av i l a R a n c h - T r a c t 3 0 8 9 St o r m w a t e r P o l l u t i o n P r e v e n t i o n P l a n Ph a s e s 2 , 3 , 4 , 5 & 6 - S i t e M a p 1493-0007 RAH/ ZKP ZKP 1/5/2023 1 1 AVILA RANCH TRACT 3089 WDID NUMBER: # To Be Determined SWPPP SITE MAP AVILA RANCH - PHASE 2, 3, 4, 5 & 6 MASS GRADING PERMIT BOUNDARY EXHIBIT N 00 100 200 (IN FEET) 50 GRAPHIC SCALE 1 IN = 100 FT SWPPP LEGEND: PERMIT COVERAGE AREA/ AREA OF DISTURBANCE DUE TO MASS GRADING, 101.71 ACRES PHASE BOUNDARY WATERSHED BOUNDARY ASSOCIATED PLAN LIST: AVILA RANCH TRACT 3089 - MASS GRADING PLAN FOR PHASES 2, 3, 4, 5 & 6 AVILA RANCH TRACT 3089 - EROSION & SEDIMENT CONTROL PLAN FOR PHASES 2, 3, 4, 5 & 6 AVILA RANCH DEVELOPMENT PLAN AVILA RANCH VESTING TENTATIVE TRACT MAP - TR 3089 AVILA RANCH TRACT 3089 - MASS GRADING DRAINAGE REPORT FOR PHASES 2, 3, 4, 5 & 6 AVILA RANCH TRACT 3089 - STORMWATER CONTROL PLAN FOR PHASES 2, 3, 4, 5 & 6 NOTE: REFER TO THE ENCLOSED EROSION & SEDIMENT CONTROL PLAN FOR LOCATION OF PROPOSED BEST MANAGEMENT PRACTICES (BMP). 101 227 101 SITE LOCAL MAP NTS RAC H E L A . H AWTH O R N E C I V I L No. 73686 NOT FOR CONSTRUCTION FOR PLAN REVIEW ONLY A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL EN G I N E E R EARTHWOOD DRIVE VENTURE DRIVE VENTURE DRIVE BUCKLEY ROAD JE S P E R S E N R O A D VA C H E L L L A N E EXISTING WETLANDS EXISTING WETLANDS PHASE 1 (NOT A PART) PHASE 5 PHASE 4 PHASE 2 PHASE 3 PHASE 3 PHASE 6 PHASE 6 PHASE 4 EA R T H W O O D D R I V E A E R O D R M A D O N N A R D CREEKSIDEST AIRPORT DR O CEANAIRE DR VIA SANBLAS CEDAR CT CENTER ST MAPLESTREDWOOD ST UNNAMED ST UNNAMED ST DEL ORO CT A LY S S U M C T C O R A L S T 101 N RAMP M U I R F I E L DSTCALLE JOAQUIN SEQUOIA DR CALLE JAZMIN KENTWOOD DR SPOONER DR VIA E S T E B A N SAWLEAFCT F R O O M R A N C H W A Y L A P O S A D A D R H U M B E R T S T W NE W PO RT ST FONTANAAVE BRIARWOODDR TANK FARM RD TANGLEWOOD DR C A N T E R B E R R Y S T U N N A M E D S T GRANADA DR CHUPARROSA DR BAY LEAF DR UNNAMED ST BEECH ST FENNEL ST J A M I L E E C T LAS PRADERAS DR S O L ACT CHUMASH ST GREGORYCT T O N I N I D R MIT CHE LLDR L A W R E N C E D R G O L D E N R O D L N M A R I N E R S C O V E W O O D SID E D R F U L L E R R D BLUEBELL WAY VILLA CT MELLO LN C A Y U C O S D R MCMILLAN AVE SUNFLO W ER W AY A T A S C A D E R O S T VISTA LAGO L A K E VIE W S T BONETTI DR PIN E C O V E D R PROSPECT ST ROYAL W AY G ALLEO N W AY SNAPDRAGON WAY EL M IRADO R CT FELICIA WAY LIL Y L N BALB O A ST SACRAMENTO DR MORRISONST CROSS ST HOLLYHOCK WAY F R A N C IS S T MARGARITAAVE HIND LN R O C K VIE W P L A Z A L E A C T SISQUOC ST LAWNWOOD DR D A H L I A L N K E N D A L L R D GAIL PLLA D E R A C T H U A S N A D R CHANDLER ST MEADOW ST F A R R I E R C T IRONBARK ST R O C K VIE W C T D E V A U L R A N C H R D WILLO W CIR ROSEMARY CT LAUREL LN T A N G L E W O O D D RFERNWOOD D R BOXWOOD CT I N D U S T R I A L W A Y 101 N ON BUTTONMWOOD WAY B L U E R O C K D R CUCARACHA CT C O R A L S T TULIP CT LOMA BONITA DR CALLE LUPITA SUELDO ST ACCESS ROAD ASHMORE ST SOUTHWOOD DR DRAKE CIR RIC A R D O ST RUSTIC WAY S W E E N E Y L N A C C ES S R O A D L O S O S O S V A L L E Y R D THREAD LN P U R P L ESAGE L N STONERIDGE DR ACCESS ROAD A U T O P A R K W A Y BARRANCA CT VACHELL LN EMPLEO ST LOS PALOS DR ACCESS ROAD S W EETB AY LN BUCKLEY RD OLD WINDMILL LN LEXINGTON CT VENTURE DR C A P I T O L I O W A Y M A D O N N A R D U N N A M E D S T FARMHOUSE LN SHORT ST LAWRENCE DR M A S O N D R S PIT FI R E S T A C C E S S R O A D ACCESS ROAD A C C E S S R O A D F I E R O L N M A D O N N A R D ZACA LN UNNAMED ST A C C E S S R O A D P OIN S E T TIA S T SANTA FE RD E L C A P I T A N W A Y R OYAL CT UNNAMEDST LARKSPUR ST101 N ON S HIGUERA ST SANTA FE RD HARMONY WAY MARIPOSA DR JESPERSON RD 101 S ON LONG ST S H I G U E R A S T V I A L A P A Z A L L E N E W A Y A VA L O N ST A C C ES S R O A D B O U G A I N V I L L E A S T M O R A BIT O P L A C C E S S R O A D GARIBALDI AVE B R O A D S T 101 N OFF A C C ES S R O A D L O S V E R D E S D R VIC E N T E D R M A D O N N A R D ALDER LN 101 N OFF 101 S OFF ACCESS ROAD CRESTVIEW CIR A C C E S S R O A D S A N S I M E O N S T M A D O N N A R D C A L L E C R O T A L O A C C E S S R O A D TIBURON WAY A C C E S S R O A D DALIDIO DR C H A P A R R A L C I R A E R O VIS T A P L 101 S OFF DRIVEWAY UNNAMED ST DRIVEWAY ESPERANZA LN OCTAGON WAY 101 N OFF CAVALIER LN H W Y 1 0 1 HOPKINS LN 1 0 1 S O N A C C E S S R O A D B U L L O C K L N EL MERCADO ST SUBURBAN RD PRADO RD DIRT ROAD A C C E S S R O A D MEISSNER ST ELKS LN 9 3 21 EX1 4 6 7 5 8 EX1 10 11 Phase 1 EX3 EX2 EX4 BUCKLEY ROAD 1 EXHIBIT NOTES:WALLACE GROUP DID NOT PERFORM SURVEY SERVICES FOR THIS MAP. NOT A LEGAL DOCUMENT. AV I L A R A N C HEXISTING W AT E R S H E D SFIGURE 31 inch = 1,200 Feet 0 2,4001,200 O JOB NO: 1493-0007-00MAP DOC: EXISTING WATERSHEDSCREATED BY: DJGDATE: 05/11/2022 !!Exisiting Contours (5 ft) Tank Farm Creek Parcels SLO City Limits CIVIL ENGINEERINGCONSTRUCTION MANAGEMENTLANDSCAPE ARCHITECTUREMECHANICAL ENGINEERINGPLANNINGPUBLIC WORKS ADMINISTRATIONSURVEYING/GIS SOLUTIONSWATER RESOURCESWALLACE SWANSON INTERNATIONAL612 CLARION COURTSAN LUIS OBISPO, CA 93401T 805 544-4011 F 805 544-4294www.wallacegroup.us SD SD SD SD SD SD SD SDSD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SDSD SD SD SD SD SD SD SD SD SS SS S D SD SD SD SD SD SDSD SD SD SD SD SD SD SD SD SD SD SD SD SD SDSD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SS SD SDSDSD SD SD SD SD SS 1 2 5 1 2 4 1 2 6 127 128 1 2 0 125 1 1 9 1 2 1 122 122 12 2 123 124 126 127 JE S P E R S E N R O A D HUGHES LANE DOOLITTLE DRIVE FOXTROT CT. VEN T U R E D R I V E MEMPHIS BELLE VENTURE DRIVE WRIGHT BROTHERS WAYWRIGHT BROTHERS WAY EA R H A R T W A Y PH 0 5 A L L E Y BUCKLEY ROAD YE A G E R C T . Tract 3089 Avila Ranch - Figure 5 Mass Grading Drainage Components 1493-0007 100 20050 1 IN = 100 FT 0 EA R T H W O O D L A N E ( P H A S E 1 ) N SCALE IN FEET 3000150010000500 ENGINEER OF RECORD: DATE APPROVAL BY THE CITY DOES NOT GUARANTEE ACCURACY NOR COMPLETENESS OF THESE PLANS. IT DOES AUTHORIZE THE OWNER TO BUILD THE PROJECT HEREON. IT SHALL BE THE RESPONSIBILITY OF THE OWNER AND ENGINEER OF RECORD TO CORRECT ANY DEFICIENCIES THAT APPEAR DURING OR AFTER CONSTRUCTION. CITY SPECIFICATIONS AND ENGINEERING STANDARDS SHALL BE FOLLOWED UNLESS THEY ARE SPECIFICALLY WAIVED OR MODIFIED BY NOTES ON THESE PLANS. THE ENGINEER OF RECORD SHALL PROVIDE SUBMITTALS AS REQUIRED IN THE ENGINEERING STANDARDS. NOTICE EROSION CONTROL PLANS FOR:REVISIONS DESCRIPTION CITY FILE NO.SHEET OF DRAWN BY:CHECKED BY:JOB NO. DATE APPROVAL ENGR CITY COMMUNITY DEVELOPMENT DIRECTOR CITY UTILITIES ENGINEER RECOMMENDED FOR APPROVAL BY OTHER ELECTRIC CO. GAS CO. TELEPHONE CO. TELEVISION CO. OTHER UTILITY DATE DATE DATE DATE DATE 1 24 DATE DATE DATE DATE DATE SAN LUIS OBISPO PUBLIC WORKS BY: 1.IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR OR PERMITTEE TO CONTACT "UNDERGROUND SERVICE ALERT OF NORTHERN CALIFORNIA" BY PHONE AT 8-1-1 FORTY-EIGHT (48) HOURS PRIOR TO START OF CONSTRUCTION FOR LOCATION OF POWER, TELEPHONE, OIL AND NATURAL GAS UNDERGROUND FACILITIES. CONTRACTOR OR PERMITEE SHALL ALSO CONTACT THE APPROPRIATE AGENCY FOR THE LOCATION OF CABLE T.V., WATER, SEWER, DRAINAGE OR UNDERGROUND FACILITIES. Reference Documents: City Standard Specifications: August 2020 Edition City Engineering Standards: August 2020 Edition OTHER DATE HORIZONTAL CONTROL FOR POINTS 8091 AS PUBLISHED IN THE CITY OF SAN LUIS OBISPO 2007 HORIZONTAL CONTROL NETWORK. CITY NETWORK IS BASED ON THE NORTH AMERICAN DATUM OF 1983 (NAD83) EPOCH DATE 1991.35, ZONE 5 CALIFORNIA. VERTICAL CONTROL BENCHMARK NO. 98 WITH AN ELEVATION OF 200.17' AS PUBLISHED IN THE CITY OF SAN LUIS OBISPO 2007 BENCHMARK SYSTEM. CITY'S BENCHMARK SYSTEM IS BASED ON THE NORTH AMERICAN VERTICAL DATUM OF 1988 (NAVD88). index to plans general notes datum TRACT 3089 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 175 VENTURE DRIVE, SAN LUIS OBISPO, CA PROJECT SITE RAC H E L A . HAWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES ® THE SCOPE OF WORK FOR THIS PLAN SET INCLUDES: ·EROSION AND SEDIMENT CONTROL FOR THE MASS GRADING OF ROADS TO SUBGRADE, BUILDING PADS FOR FUTURE SINGLE FAMILY RESIDENTIAL HOMES, COMMERCIAL LOTS, MULTIFAMILY HOUSING, PARKS AND OPEN SPACE, MULTI-USE TRAILS/BIKE PATH, CREEK BYPASS CHANNEL ·EROSION AND SEDIMENT CONTROL FOR THE CONSTRUCTION OF DRAINAGE FEATURES SUCH AS PERIMETER SWALES, OVERFLOW SWALES, INTERCEPTOR SWALES, AND STORM DRAIN PIPE NETWORKS ·EROSION AND SEDIMENT CONTROL FOR THE CONSTRUCTION OF TANK FARM CREEK CROSSINGS scope of work AVILA RANCH VESTING TENTATIVE TRACT MAP - TRACT 3089 AVILA RANCH PHASE 1 IMPROVEMENT PLANS - TRACT 3089 AVILA RANCH PHASE 1 FINAL MAP - TRACT 3089 AVILA RANCH MASS GRADING PLAN FOR TRACT 3089 - AVILA RANCH PHASES 2-6 STORMWATER CONTROL PLAN FOR TRACT 3089 - AVILA RANCH PHASES 2-6, DATED 12/21/22 DRAINAGE REPORT FOR TRACT 3089 - AVILA RANCH PHASES 2-6, DATED 1/5/23 STORMWATER POLLUTION PREVENTION PLAN WDID #: TO BE DETERMINED PRELIMINARY STORMWATER CONTROL MEASURES OPERATIONS AND MAINTENANCE PLAN FOR TRACT 3089 - AVILA RANCH PHASES 2-6, DATED 5/24/22 PHASES 2-6 AVILA RANCH CLOMR FEMA CASE #: 22-09-0955R CALIFORNIA DEPARTMENT OF FISH AND WILDLIFE APPLICATION: SLO-29127 STATE OF CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD WASTE DISCHARGE REQUIREMENT PERMIT associated plan & permit list Sheet List Table Sheet Number Sheet Title 1 City Cover Sheet 2 Title Sheet 3 Notes Sheet 4 Notes Sheet 5 Legend Sheet 6 Grading Plan Index 7 Pad Grading Details 8 Erosion Control Plan Layout 9 Erosion Control Plan Layout 10 Erosion Control Plan Layout 11 Erosion Control Plan Layout 12 Erosion Control Plan Layout 13 Erosion Control Plan Layout 14 Erosion Control Plan Layout 15 Erosion Control Plan Layout 16 Erosion Control Plan Layout 17 Erosion Control Plan Layout 18 Erosion Control Plan Layout 19 Erosion Control Plan Layout 20 Erosion Control Plan Layout 21 Erosion Control Details 22 Erosion Control Details 23 Erosion Control Details 24 Erosion Control Details FMAP-0808-202 12/21/2022 6' ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Ti t l e S h e e t 2 FILE NAME: 1493-0007-ECPN-TITL.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R 227 1 1 1 46 46 41 41 58 166 166 1 N VICINITY MAP NTS PROJECT MAP NTS 101 227 101 TO PISMO BEACH U.S . 1 0 1 TANK FARM RD S T A T E H W Y . 2 2 7 TO ATASCADERO TO ARROYO GRANDE U.S . 1 0 1 VA C H E L L L A N E HIG U E R A SO U T H BUCKLEY RD PRADO RD L O S O S O S V A L L E Y R D SUBURBAN RD SITE LOCAL MAP NTS TO MORRO BAY VA C H E L L L A N E BUCKLEY RD SLO COUNTY AIRPORT EARTHWOOD ROAD JE S P E R S E N R O A D SITE ABBREVIATIONS AC ASPHALTIC CONCRETE ACP ASBESTOS CEMENT PIPE AISC AMERICAN INSTITUTE OF STEEL CONSTRUCTION ARV AIR RELEASE VALVE A&V AIR AND VACUUM (COMBINATION) VALVE AVG AVERAGE BC BEGIN CURVE BF BLIND FLANGE BFV BUTTERFLY VALVE BIA BUREAU OF INDIAN AFFAIRS BLDG BUILDING BM BENCH MARK BO BLOW OFF BV BALL VALVE C CURB CAV COMBINATION AIR VALVE CATV CABLE TELEVISION CI CAST IRON CL CENTERLINE CL CLASS CMP CORRUGATED METAL PIPE CO CLEANOUT CONC CONCRETE CONST CONSTRUCTION CONT CONTINUOUS CP CATHODIC PROTECTION CPLG COUPLING CY CUBIC YARD DET DETAIL DIA DIAMETER DIM DIMENSION D/W DRIVEWAY E EXISTING EA EACH EC END CURVE ELE ELEVATION EP EDGE OF PAVEMENT EX EXISTING EG EXISTING GROUND FCA FLANGE COUPLING ADAPTOR FDC FIRE DEPARTMENT CONNECTION FF FINISH FLOOR FG FINISH GRADE FH FIRE HYDRANT FL FLOW LINE FL FIRE LINE FLG FLANGE FS FINISH SURFACE FT FEET G GAS GA GAGE GAL GALLON GALV GALVANIZED GB GRADE BREAK GPD GALLONS PER DAY GPM GALLONS PER MINUTE GV GATE VALVE HC HANDICAP HDPE HIGH DENSITY POLYETHYLENE HGL HYDRAULIC GRADE LINE ID INSIDE DIAMETER IN INCHES INV INVERT JP JOINT POLE JT JOINT UTILITY TRENCH L LENGTH LAT LATERAL LF LINEAR FEET LP LIGHT POLE LT LEFT M METER MAX MAXIMUM MIN MINIMUM MISC MISCELLANEOUS MH MANHOLE N/A NOT APPLICABLE NGVD NATIONAL GEODETIC VERTICAL DATUM NIC NOT IN CONTRACT NTS NOT TO SCALE OD OUTSIDE DIAMETER PCC PORTLAND CEMENT CONCRETE PH POTHOLE (UTILITY WAS POTHOLED) PIV POST INDICATOR VALVE POC POINT OF CONNECTION PRV PRESSURE REGULATING VALVE PSF POUND PER SQURE FOOT PSI POUND PER SQUARE INCH PVC POLYVINYL CHLORIDE R RADIUS RC REINFORCED CONCRETE RCP REINFORCED CONCRETE PIPE REQD REQUIRED RT RIGHT R/W RIGHT OF WAY RET WALL RETAINING WALL SS SANITARY SEWER SCH SCHEDULE SD STORM DRAIN SHT SHEET SPEC SPECIFICATIONS SSFM SANITARY SEWER FORCE MAIN STA STATION STD STANDARD STL STEEL SW SIDEWALK T TELEPHONE TB THRUST BLOCK TB TOP OF BANK TC TOP OF CURB TF TOP OF FOOTING TG TOP OF GRATE TP TOP OF PAVEMENT TYP TYPICAL TW TOP WALL UTL COMMON TRENCH UTILITIES VAR VARIES VC VERTICAL CURVE VIC VICTAULIC COUPLING VERT VERTICAL W WATER WF WIDE FLANGE WL WATER LINE WM WATER METER WS WATER SERVICE WV WATER VALVE WWM WELDED WIRE MESH WW WET WELL *NOTE: THIS IS A STANDARD SET OF ABBREVIATIONS. NOT ALL ABBREVIATIONS SHOWN WILL APPLY TO THIS WORK. OWNER/DEVELOPER WATHEN CASTANOS HOMES 735 TANK FARM, SUITE 100 SAN LUIS OBISPO, CA 93401 SITE ADDRESS 175 VENTURE DRIVE SAN LUIS OBISPO, CA 93401 ASSESSOR'S PARCEL NUMBERS 053-259-004 053-259-005 053-259-006 SURVEY NOTES 1.IF CONTRACTOR OPERATIONS DAMAGE OTHER SURVEY MONUMENTS, THE CONTACTOR SHALL REPLACE THEM, IN PLACE, AT NO ADDITION COST, IN ACCORDANCE WITH BUSINESS AND PROFESSIONS CODE OF CALIFORNIA SECTION 8771. 2.HORIZONTAL POSITIONS AS BASED ON THE CITY OF SAN LUIS OBISPO HORIZONTAL CONTROL NETWORK 2007 POINT 8091. POINT 8091, HAVING A PUBLISHED POSITION OF: NORTHING 2288695.139', EASTING 5773576.358'; AND POINT 8109, HAVING A PUBLISHED POSITION OF: NORTHING 2286220.263', EASTING 5762972.262'. POINT 8091 BEARS NORTH 76° 51' 47" EAST 10889.07' FROM POINT 8109. LOCATIONS ARE NOT SHOWN. 3.THE ORTHOMETRIC HEIGHTS (ELEVATIONS) WERE BASED ON THE CITY OF SAN LUIS OBISPO BENCHMARK SYSTEM 2007 AND REFERENCED BY BM #98, HAVING A PUBLISHED ELEVATION OF 200.17'. CITY OF SAN LUIS OBISPO BM #45 WAS MEASURED AS PART OF THIS SURVEY AND HAS A MEASURED ELEVATION OF 123.32' (RECORD FROM 2007 BENCHMARK REPORT 123.38'). 4.ALL MEASUREMENTS LISTED, SHOWN AND REPRESENTED HEREON ARE BASED ON GRID DISTANCES OF THE CALIFORNIA COORDINATE SYSTEM OF 1983 ZONE 5 PROJECTION BASED ON THE CITY OF SAN LUIS OBISPO HORIZONTAL CONTROL NETWORK 2007. THE COMBINED SCALE FACTOR FOR THE PROJECT IS 0.999970881. THIS SCALE FACTOR WAS CALCULATED USING AN ELEVATION OF 92.84' FOR PT. NO. 124. DIVIDE THE DISTANCES HEREON BY THE COMBINED SCALE FACTOR TO OBTAIN GROUND DISTANCES. ALL DISTANCES SHOWN ARE U.S. SURVEY FEET. 5.THE CONVERGENCE ANGLE IS: -1° 38' 13.79596" AT PT. NO. 124. 6.THE CONTOUR INTERVAL IS 1 FOOT. 7.UNDERGROUND UTILITY LOCATIONS ARE PLOTTED BASED ON ABOVE GROUND PAINT MARKS BY OTHERS, ABOVE GROUND SURFACE STRUCTURES. ACTUAL LOCATION MAY DIFFER. ADDITIONAL UNDERGROUND UTILITY LINES MAY EXIST. FOR INFORMATION REGARDING UTILITY LOCATION, SIZE, DEPTH, CONDITION, AND CAPACITY CONTACT UTILITY OR MUNICIPAL/PUBLIC SERVICE FACILITY. 8.UNDERGROUND PIPE SIZES ARE BASED ON VISUAL OBSERVATIONS MADE FROM THE SURFACE AND ARE APPROXIMATE. 9.EASEMENTS AFFECTING THE PROPERTIES SHOWN HEREON MAY EXIST. NO TITLE INFORMATION WAS PROVIDED. GENERAL NOTES 1.THESE PLANS ARE PART OF A SET OF CONTRACT DOCUMENTS AND SHALL NOT BE CONSIDERED THE SOLE SOURCE OF CONSTRUCTION INFORMATION. ALL CONSTRUCTION WORK AND INSTALLATIONS SHALL CONFORM TO THE CITY OF SAN LUIS OBISPO STANDARDS AND SPECIFICATIONS, THE CONTRACT DOCUMENTS AND WORK SHALL BE SUBJECT TO THE APPROVAL OF THE CITY PUBLIC WORKS DEPARTMENT (CITY). 2.THE CONTRACTOR SHALL HAVE COPIES OF THE APPROVED CONTRACT DOCUMENTS FOR THIS PROJECT ON THE SITE AT ALL TIMES AND SHALL BE FAMILIAR WITH ALL APPLICABLE STANDARDS AND SPECIFICATIONS. 3.CONTRACTOR AGREES THAT THEY SHALL ASSUME SOLE AND COMPLETE RESPONSIBILITY FOR THE JOB SITE DURING THE COURSE OF THE PROJECT, INCLUDING SAFETY OF ALL PERSONS AND PROPERTY; THAT THIS REQUIREMENT SHALL APPLY CONTINUOUSLY AND NOT BE LIMITED TO NORMAL WORKING HOURS; AND THAT THE CONTRACTOR SHALL DEFEND, INDEMNIFY, AND HOLD THE ENGINEER AND OWNER HARMLESS FROM ANY AND ALL LIABILITY, REAL OR ALLEGED, IN CONNECTION WITH THE PERFORMANCE OF WORK ON THIS PROJECT, EXCEPTING FOR LIABILITY ARISING FROM THE SOLE NEGLIGENCE OF THE OWNER OR ENGINEER, OR THIRD PARTY IN VIOLATION OF THE LAW OR IN TRESPASS. THE CONTRACTOR SHALL PRACTICE SAFETY AT ALL TIMES AND SHALL FURNISH, ERECT, AND MAINTAIN, SUCH FENCES, BARRICADES, LIGHTS, AND SIGNS NECESSARY TO GIVE ADEQUATE PROTECTION TO THE PUBLIC AT ALL TIMES. 4.INFORMATION PERTAINING TO EXISTING UNDERGROUND FACILITIES IS BASED ON RECORD INFORMATION AND IS SHOWN FOR INFORMATION PURPOSES ONLY. UNDERGROUND FEATURES SHOWN IN PLAN VIEW ON THE PLANS ARE INDICATED WITH THEIR APPROXIMATE LOCATION AND EXTENT, AND MAY NOT APPEAR IN PROFILE OR SECTIONS VIEWS. THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING ALL AGENCIES INVOLVED AND SHALL LOCATE ALL FACILITIES PRIOR TO EXCAVATION IN ANY AREA. THE CONTRACTOR SHALL CALL UNDERGROUND SERVICE ALERT (USA), TOLL FREE AT 811, AND THE CITY OF SAN LUIS OBISPO AT 805-237-3861 FORTY-EIGHT (48) HOURS PRIOR TO THE START OF CONSTRUCTION. 5.THE CONTRACTOR SHALL CONTINUALLY REVIEW JOB SITE CONDITIONS. CONDITIONS REQUIRING CONSTRUCTION DIFFERENT FROM THAT SHOWN ON THE PLANS SHALL BE REPORTED TO THE ENGINEER PRIOR TO PROCEEDING WITH THE AFFECTED CONSTRUCTION. 6.SHOULD IT APPEAR THAT THE WORK TO BE DONE OR ANY MATTER RELATIVE THERETO IS NOT SUFFICIENTLY DETAILED OR EXPLAINED ON THESE PLANS, THE CONTRACTOR SHALL, AT THEIR EARLIEST OPPORTUNITY, REQUEST IN WRITING FROM THE ENGINEER SUCH FURTHER EXPLANATIONS AS MAY BE NECESSARY PRIOR TO THE COMMENCEMENT OF SAID WORK. 7.THESE DRAWINGS REPRESENT THE FINISHED CONDITION AND UNLESS OTHERWISE INDICATED, THEY DO NOT SHOW THE METHOD OF CONSTRUCTION. 8.ALL IMPROVEMENTS SHOWN OR INDICATED ON THESE DRAWINGS ARE TO BE CONSTRUCTED AND/OR INSTALLED BY THE CONTRACTOR IN THIS PROJECT, UNLESS THEY ARE CALLED OUT AS: "EXISTING", "FUTURE", "NIC", NOT A PART; OR HAVE SOME OTHER EXCLUDING NOTATION. 9.CONTRACTOR SHALL KEEP A SET OF PROJECT DRAWINGS ON WHICH RECORD INFORMATION SHALL BE PLACED NOTING DEVIATIONS FROM THE PLANS IN THE LOCATION, GRADE, SIZE, TYPE, AND SCOPE OF WORK WHICH IS CONSTRUCTED. 10.THE CITY INSPECTOR SHALL PERFORM PERIODIC REVIEWS OF COMPLETED WORK TO DETERMINE CONFORMANCE WITH THE APPROVED PLANS. CONTRACTOR SHALL CORRECT ANY DIFFERENCES FOUND BY SUCH SURVEY AND WILL PROVIDE ALL CONTRACTOR'S RECORDS KEPT DURING THE COURSE OF CONSTRUCTION TO THE ENGINEER OF WORK AND CITY INSPECTOR FOR PREPARATION OF RECORD DRAWINGS. ENGINEER WILL PREPARE SUCH RECORD DRAWINGS UPON COMPLETION OF THE WORK AND PRIOR TO CITY'S FINAL INSPECTION. 11.OCCUPATIONAL SAFETY AND HEALTH ACT (OSHA) REQUIREMENTS AND STANDARDS SHALL BE OBSERVED AT THE JOB SITE AT ALL TIMES. 12.THE ENGINEER OF WORK SHALL ORGANIZE A PRE-CONSTRUCTION MEETING PRIOR TO COMMENCEMENT OF WORK. THE MEETING SHALL INCLUDE (AT A MINIMUM) THE OWNER/REPRESENTATIVE, CONTRACTORS, ENGINEER OF WORK, SOILS ENGINEER, PERTINENT UTILITY COMPANIES, SURVEYOR AND CITY STAFF. 13.THE CONTRACTOR CONTRACTOR SHALL NOTIFY THE PUBLIC WORKS DEPARTMENT AT LEAST FIVE WORKING DAYS PRIOR TO THE BEGINNING OF CONSTRUCTION AT 805-781-7200. 14.ALL CONSTRUCTION SHALL BE IN COMPLIANCE WITH ALL RECOMMENDATIONS AND REQUIREMENTS AS SET FORTH IN THE SOILS REPORT: SOILS ENGINEERING REPORT UPDATE, AVILA RANCH DEVELOPMENT, BUCKLEY ROAD AND VACHELL LANE, DATED 06/11/2018; PREPARED BY GEOSOLUTIONS, INC. 15.PROPOSED FUTURE IMPROVEMENTS ARE SHOWN FOR REFERENCE ONLY. 16.COMPLY WITH CONDITIONS OF APPROVAL FOR THE PROJECT. 17.NO CONSTRUCTION SHALL BE STARTED WITHOUT PLANS APPROVED BY THE CITY DEPARTMENT OF PUBLIC WORKS. THE DEPARTMENT OF PUBLIC WORKS SHALL BE NOTIFIED AT LEAST 24 HOURS PRIOR TO STARTING OF CONSTRUCTION AND OF THE TIME LOCATION OF THE PRECONSTRUCTION CONFERENCE. ANY CONSTRUCTION PERFORMED WITHOUT APPROVED PLANS OR PRIOR NOTIFICATION TO THE DEPARTMENT OF PUBLIC WORKS WILL BE REJECTED AND WILL BE AT THE CONTRACTOR’S AND/OR OWNER’S RISK. 18.FOR ANY CONSTRUCTION PERFORMED THAT IS NOT IN COMPLIANCE WITH PLANS OR PERMITS APPROVED FOR THE PROJECT THE PUBLIC WORKS DEPARTMENT MAY REVOKE ALL ACTIVE PERMITS AND RECOMMEND THAT CITY CODE ENFORCEMENT PROVIDE A WRITTEN NOTICE OR STOP WORK ORDER IN ACCORDANCE WITH LAND USE ORDINANCE. 19.ALL CONSTRUCTION WORK AND INSTALLATIONS SHALL CONFORM TO THE CITY OF SAN LUIS OBISPO PUBLIC IMPROVEMENT STANDARDS AND ALL WORK SHALL BE SUBJECT TO THE APPROVAL OF THE DEPARTMENT OF PUBLIC WORKS. 20.THE PROJECT OWNER AND CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING AND/OR MAINTAINING ALL WEATHER ACCESS AT ALL TIMES TO EXISTING PROPERTIES LOCATED IN THE VICINITY OF WORK. ADDITIONALLY, THEY SHALL BE RESPONSIBLE FOR MAINTAINING ALL EXISTING SERVICES, INCLUDING UTILITY, GARBAGE COLLECTION, MAIL DISTRIBUTION, ETC., TO ALL EXISTING PROPERTIES LOCATED IN THE VICINITY OF WORK. 21.ON-SITE HAZARDS TO PUBLIC SAFETY SHALL BE SHIELDED BY CONSTRUCTION FENCING. FENCING SHALL BE MAINTAINED BY THE PROJECT OWNER AND CONTRACTOR UNTIL SUCH TIME THAT THE PROJECT IS COMPLETED AND OCCUPIED, POTENTIAL HAZARDS HAVE BEEN MITIGATED, OR ALTERNATIVE PROTECTIVE MEASURES HAVE BEEN INSTALLED. 22.SOILS TESTS SHALL BE DONE IN ACCORDANCE WITH THE CITY PUBLIC IMPROVEMENT STANDARDS, SECTION 2.2. ALL TESTS MUST BE MADE WITHIN 15 DAYS PRIOR TO THE PLACING MATERIAL. THE TEST RESULTS SHALL CLEARLY INDICATE THE LOCATION AND SOURCE OF THE MATERIAL. 23.ROADWAY COMPACTION TESTS SHALL BE MADE ON SUBGRADE MATERIAL, AGGREGATE BASE MATERIAL, AND MATERIAL AS SPECIFIED BY THE SOILS ENGINEER. SAID TESTS SHALL BE MADE PRIOR TO THE PLACEMENT OF THE NEXT MATERIAL LIFT. 24.SUBGRADE MATERIAL SHALL BE COMPACTED TO A RELATIVE COMPACTION OF 95% IN THE ZONE BETWEEN FINISHED SUBGRADE ELEVATION AND A MINIMUM OF 1-FOOT BELOW. ALL MATERIAL IN FILL SECTIONS BELOW THE ZONE MENTIONED ABOVE SHALL BE COMPACTED TO 90% RELATIVE COMPACTION. 25.A REGISTERED CIVIL ENGINEER SHALL CERTIFY THAT THE IMPROVEMENTS WHEN COMPLETED ARE IN ACCORDANCE WITH THE PLANS PRIOR TO THE REQUEST FOR A FINAL INSPECTION. RECORD DRAWINGS SHALL BE PREPARED AFTER CONSTRUCTION IS COMPLETED. THE CIVIL ENGINEER CERTIFYING THE IMPROVEMENTS AND PREPARING AS-BUILT PLANS MAY BE PRESENT WHEN THE FINAL INSPECTION IS MADE BY THE CITY. 26.AN ENGINEER OF WORK AGREEMENT AND AN ENGINEER CHECKING AND INSPECTION AGREEMENT ARE REQUIRED PRIOR TO THE START OF CONSTRUCTION. THE PUBLIC WORKS DEPARTMENT SHALL BE NOTIFIED IN WRITING OF ANY CHANGES TO THE ENGINEER OF WORK AGREEMENT. CONSTRUCTION SHALL NOT PROCEED WITHOUT AN ENGINEER OF WORK. 27.UTILITY COMPANIES SHALL BE NOTIFIED PRIOR TO THE START OF CONSTRUCTION. 28.A CITY ENCROACHMENT PERMIT IS REQUIRED FOR ALL WORK DONE WITHIN THE CITY RIGHT-OF-WAY. THE ENCROACHMENT PERMIT MAY ESTABLISH ADDITIONAL CONSTRUCTION, UTILITY AND TRAFFIC CONTROL REQUIREMENTS. 29.THE CITY INSPECTOR ACTING ON BEHALF OF THE CITY DEPARTMENT OF PUBLIC WORKS MAY REQUIRE REVISIONS IN THE PLANS TO SOLVE UNFORESEEN PROBLEMS THAT MAY ARISE IN THE FIELD. ALL REVISIONS SHALL BE SUBJECT TO THE APPROVAL OF THE DEVELOPER’S ENGINEER OF WORK. 30.HYDRO-SEEDING OR OTHER PERMANENT EROSION CONTROL SHALL BE PLACED AND ESTABLISHED WITH 90% COVERAGE ON ALL DISTURBED SURFACES (OTHER THAN PAVED OR GRAVEL SURFACES) PRIOR TO THE FINAL INSPECTION. 31.FOR ANY PUBLIC IMPROVEMENTS TO BE MAINTAINED BY THE CITY, IF ENVIRONMENTAL PERMITS FROM THE U.S. ARMY CORPS OF ENGINEERS, THE CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD/STATE WATER RESOURCES CONTROL BOARD, OR THE CALIFORNIA DEPARTMENT OF FISH & GAME ARE REQUIRED, THE DEVELOPER SHALL: a.SUBMIT A COPY OF ALL SUCH COMPLETED PERMITS TO THE CITY DEPARTMENT OF PUBLIC WORKS OR, b.DOCUMENT THAT THE REGULATORY AGENCIES DETERMINED THAT SAID PERMIT IS NOT REQUIRED; PRIOR TO ACCEPTANCE OF THE COMPLETED IMPROVEMENTS FOR CITY MAINTENANCE AND RELEASE OF IMPROVEMENT SECURITY. ANY MITIGATION MONITORING REQUIRED BY SAID PERMITS WILL REMAIN THE RESPONSIBILITY OF THE DEVELOPER. 17.WHEN THE PROJECT SITE EARTHWORK IS NOT INTENDED TO BALANCE THEN A SEPARATE GRADING PERMIT FOR THE SENDING OR RECEIVING PROPERTY MAY BE REQUIRED. A COPY OF THE PERMIT/S OR EVIDENCE THAT NO PERMITS ARE REQUIRED SHALL BE SUBMITTED TO THE DEPARTMENT PRIOR TO COMMENCING PROJECT EARTHWORK 18.ELEVATION CERTIFICATES FOR EACH LOT SHALL BE SUBMITTED. GRADING GENERAL NOTES 1.THE FOLLOWING SOIL QUANTITIES ARE ESTIMATES ONLY AND ARE NOT ADJUSTED FOR REMOVAL OF VEGETATION OR FOR ROCK INCURRED DURING EXCAVATION. QUANTITY ESTIMATES SHOWN ON THESE PLANS ARE TO BE USED FOR BONDING AND PERMIT PURPOSES ONLY. IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO VERIFY ACTUAL QUANTITIES AND SHRINKAGE FOR THE PURPOSES OF CONSTRUCTION AND BIDDING. A.CUT = 253,503 CY B.FILL = 323,513 CY (ADJUSTMENT INCREASE OF 0% FOR SHRINKAGE) C.NET (FILL) = 70,010 CY D.MAX DEPTH OF CUT = 24.1 FT E.MAX DEPTH OF FILL = 10.2 FT 2.ALL GRADING AND SITE WORK SHALL BE DONE IN ACCORDANCE WITH THE GRADING ORDINANCE OF THE CITY OF SAN LUIS OBISPO, THE CALIFORNIA BUILDING CODE CHAPTER 18, 2019 ed., AND THE SOILS REPORT. IN THE CASE OF CONFLICT BETWEEN THE PRECEDING REQUIREMENTS AND THESE PLANS, THE MORE STRINGENT SHALL GOVERN. 3.THE GEOTECHNICAL ENGINEER, WILL BE NOTIFIED AT LEAST TWO (2) WORKING DAYS BEFORE SITE CLEARING OR GRADING OPERATIONS COMMENCE, AND WILL BE PRESENT TO OBSERVE THE STRIPPING OF DELETERIOUS MATERIAL AND PROVIDE CONSULTATION TO THE GRADING CONTRACTOR IN THE FIELD. 4.GRADING OPERATIONS SHALL CONFORM TO THE RECOMMENDATIONS IN THE SOILS REPORT (SOILS ENGINEERING REPORT UPDATE, AVILA RANCH DEVELOPMENT, BUCKLEY ROAD AND VACHELL LANE, DATED 06/11/2018; PREPARED BY GEOSOLUTIONS, INC. ), UNLESS OTHERWISE DIRECTED BY THE GEOTECHNICAL ENGINEER OF RECORD OR AS NOTED ON THESE PLANS. 5.ALL PERMANENT CUT OR FILL SLOPES SHALL BE NO STEEPER THAN 2.0 HORIZONTAL TO 1.0 VERTICAL. 6.FILL MATERIAL WILL BE RECOMPACTED TO 90% OF MAXIMUM DENSITY. 7.REMOVE ANY DELETERIOUS MATERIAL ENCOUNTERED BEFORE PLACING ANY FILL. 8.ALL FILLS SHALL BE BENCHED INTO COMPETENT MATERIAL AND FILL AREA SHALL BE PREPARED AS REQUIRED BY THE GEOTECHNICAL ENGINEER. NO FILL SHALL BE PLACED UNTIL PREPARATION OF THE SITE HAS BEEN APPROVED BY THE GEOTECHNICAL ENGINEER. SCARIFICATION OF THE EXISTING SOIL AT AREAS TO RECEIVE FILL SHALL BE PERFORMED. ALL FILL MATERIAL SHALL BE IN ACCORDANCE WITH THE SOILS REPORT. 9.FIELD OBSERVATION AND TESTING DURING THE GRADING OPERATIONS, AS DESCRIBED HEREIN, SHALL BE PROVIDED BY THE GEOTECHNICAL ENGINEER, SO THAT A DECISION CAN BE FORMED REGARDING THE ADEQUACY OF THE SITE PREPARATION, THE ACCEPTABILITY OF FILL MATERIALS, AND THE EXTENT TO WHICH THE EARTHWORK CONSTRUCTION AND THE DEGREE OF COMPACTION COMPLY WITH THE PROJECT'S GEOTECHNICAL SPECIFICATIONS AND IS SUITABLE TO SUPPORT THE INTENDED STRUCTURES. 10.THE CONTRACTOR SHALL FURNISH THE GEOTECHNICAL ENGINEER WITH A SUBMITTAL INDICATING THE TYPE OF CONCRETE, MIX QUANTITIES, AND MASONRY MATERIALS TO BE USED IN THE CONSTRUCTION OF ALL FOUNDATIONS, FOUNDATION WALLS, AND RETAINING WALLS FOR PRIOR APPROVAL. 11.THE CONTRACTOR SHALL PROVIDE UNIFORM GRADES BETWEEN CONTROL ELEVATIONS WITH SMOOTH VERTICAL CURVES AT GRADE BREAKS. THE EDGES OF ALL GRADING WORK SHALL BE ROLLED AND CONTOURED TO PRESENT A NATURAL LOOKING APPEARANCE THAT BLENDS WITH ADJACENT NATURAL GRADES AND AVOIDS PRISMATIC FORMS. 12.NO AREA SHALL BE GRADED SOONER THAN IS NECESSARY FOR CONSTRUCTION TO REDUCE THE AMOUNT OF TIME THAT THE SOILS ARE DEVOID OF PLANT MATERIAL. 13.PRIOR TO FINAL INSPECTION, THE GEOTECHNICAL ENGINEER SHALL CERTIFY THAT ALL GRADING, SCARIFICATION, AND COMPACTION WAS DONE IN ACCORDANCE WITH THE RECOMMENDATIONS IN THE SOILS REPORT AND AS NOTED ON THESE PLANS. 14.THE GEOTECHNICAL ENGINEER SHALL INSPECT AND CERTIFY THAT ALL FOUNDATION EXCAVATIONS COMPLY WITH THE RECOMMENDATIONS OF THE SOILS REPORT 15.THE GEOTECHNICAL ENGINEER TO CERTIFY THE GRADING RECOMMENDATIONS FROM THE SOILS INVESTIGATION HAVE BEEN MET AND A STATEMENT SAYING, “BUILDING PAD AS CONSTRUCTED IS SUITABLE FOR INTENDED USE.” REQUIRED FOR ALL LOTS. 16.A FINAL REPORT SHALL BE PROVIDED BY THE GEOTECHNICAL ENGINEER IN ACCORDANCE WITH UBC SECTION 3318.1. 17.THE GEOTECHNICAL ENGINEER SHALL INSPECT GRADING OPERATIONS AND COMPLETE AN INSPECTION REPORT ON A BI-WEEKLY BASIS STATING THE PROGRESS OF GRADING OPERATIONS. 12/21/2022 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS No t e s S h e e t 3 FILE NAME: 1493-0007-ECPN-TITL.DWG R Know what's below. Call before you dig. RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R CONSTRUCTION NOTES 1.THE CONTRACTOR SHALL INVESTIGATE THE SITE DURING CLEARING AND EARTHWORK OPERATIONS FOR ANY EXISTING HAZARD TO CONSTRUCTION NOT SHOWN ON THE PLANS SUCH AS FILLED EXCAVATIONS OR BURIED STRUCTURES SUCH AS CESSPOOLS, CISTERNS, FOUNDATIONS, OR LARGE DEPOSITS OF ORGANIC MATERIAL, ETC. IF ANY SUCH HAZARDS ARE FOUND, THE OWNER, CITY PUBLIC WORKS AND ENGINEER SHALL BE NOTIFIED. ALL EXISTING SURFACE STRUCTURES, FENCES, TANKS, PIPES, ETC., AND ANY BURIED MATERIAL SPECIFIED IN THE PLANS FOR REMOVAL FROM THE SITE SHALL BE DISPOSED OF AT A LICENSED DISPOSAL FACILITY. 2.THE CONTRACTOR SHALL EXPOSE AND VERIFY THE LOCATION, ELEVATION AND CONDITION OF EXISTING UTILITY FACILITIES PRIOR TO BEGINNING ANY EXCAVATION OR OTHER UNDERGROUND WORK IN THE VICINITY OF THOSE UTILITIES. 3.ALL VALVE AND MANHOLE COVERS TO REMAIN SHALL BE PROTECTED IN PLACE OR ADJUSTED TO GRADE, PER CITY STANDARDS. 4.THE CONTRACTOR SHALL PROVIDE A MINIMUM OF 48 HOURS WRITTEN NOTICE TO THE PROJECT REPRESENTATIVE AND SURVEYOR WHEN REQUESTING SURVEY STAKES. 5.SPECIFICATIONS FOR HIGH DENSITY CORRUGATED POLYETHYLENE (HDPE) STORM DRAIN PIPE WITH SMOOTH INTERIOR (DOUBLE WALL) AND RUBBER GASKET JOINTS: A.HIGH DENSITY CORRUGATED POLYETHYLENE STORM DRAIN PIPE SHALL HAVE FULL CIRCULAR CROSS-SECTION, AN INTEGRALLY FORMED SMOOTH INTERIOR, AND CORRUGATED EXTERIOR. NOMINAL SIZES ARE 4" - 60" DIAMETER; B.PIPE SHALL MEET CALTRANS STANDARD SPECIFICATIONS SECTION 64 AND THE REQUIREMENTS OF AASHTO SPECIFICATIONS M-294 FOR 12" - 48" DIAMETER AND MP-7 FOR 54" AND 60" DIAMETER. PIPE SHALL BE TYPE S OR D (SMOOTH INTERIOR); C.PIPE JOINTS SHALL BE BELL AND SPIGOT DESIGN AND SHALL INCLUDE A RUBBER GASKET CONFORMING TO THE REQUIREMENTS OF ASTM F-477. THE JOINT SYSTEM SHALL BE CERTIFIED BY AN INDEPENDENT TESTING ORGANIZATION THAT IT MEETS THE LEAKAGE TEST REQUIREMENTS OF ASTM D-3212 AT 3.0 PSI; D.FITTINGS USED WITH THE PIPE SHALL NOT REDUCE OR IMPAIR THE OVERALL INTEGRITY OR FUNCTION OF THE PIPELINE. FITTINGS MAY BE MOLDED OR FABRICATED AND SHALL BE FURNISHED BY THE PIPE MANUFACTURER; E.UNLESS OTHERWISE SPECIFIED IN THE PROJECT PLANS OR SPECIFICATIONS, INSTALLATIONS OF THE PIPE AND FITTINGS SHALL BE IN ACCORDANCE WITH THE PIPE MANUFACTURER'S RECOMMENDATIONS. 6.SPECIFICATIONS FOR PVC STORM DRAIN PIPE A.PVC GRAVITY STORM DRAIN PIPE SPECIFIED ON THE DRAWINGS AS SDR 35 SHALL CONFORM TO ASTM D3034, WITH INTEGRAL BELL GASKET JOINTS. RUBBER GASKETS SHALL BE FACTORY INSTALLED AND CONFORM TO ASTM F477; B.STORM DRAIN PIPE SHALL BE MADE OF PVC PLASTIC HAVING A CELL CLASSIFICATION OF 12454B OR 12364B AS DEFINED IN ASTM D1784, SHALL HAVE A SDR OF 35, AND A MINIMUM PIPE STIFFNESS OF 46 PSI ACCORDING TO ASTM TEST D2412; C.ALL PIPE LENGTHS SHALL BE INSTALLED IN COMPLIANCE WITH ASTM D2321. BACKFILL REQUIREMENTS SHALL BE PER CITY OF SAN LUIS OBISPO PUBLIC WORKS STANDARDS. D.ALL STORM DRAIN LINES SHALL BE TESTED IN ACCORDANCE WITH CITY OF SAN LUIS OBISPO PUBLIC WORKS STANDARDS. PALEONTOLOGICAL MONITORING NOTES 1.IF UNRECORDED PALEONTOLOGICAL RESOURCES ARE UNCOVERED DURING GROUND DISTURBANCE OR CONSTRUCTION ACTIVITIES, THE OWNER/APPLICANT/CONTRACTOR SHALL: A.TEMPORARILY HALT CONSTRUCTION OR EXCAVATION ACTIVITIES WITHIN 50 FEET OF THE FIND AND REDIRECT ACTIVITY TO OTHER WORK AREAS; B.IMMEDIATELY NOTIFY THE CITY REGARDING THE RESOURCE AND REDIRECTED GRADING ACTIVITY; AND C.OBTAIN THE SERVICES OF A PROFESSIONAL PALEONTOLOGIST WHO SHALL ASSESS THE SIGNIFICANCE OF THE FIND AND PROVIDE RECOMMENDATIONS AS NECESSARY FOR ITS PROPER DISPOSITION FOR REVIEW AND APPROVAL BY THE CITY OF SAN LUIS OBISPO. ALL SIGNIFICANCE ASSESSMENT AND MITIGATION OF IMPACTS TO THE PALEONTOLOGICAL RESOURCE AND VERIFICATION SHALL BE REVIEWED BY THE CITY OF SAN LUIS OBISPO PRIOR TO RESUMING GRADING IN THE AREA OF THE FIND. MITIGATION MAY INVOLVE PRESERVATION IN PLACE OR DOCUMENTATION AND EXCAVATION OF THE RESOURCE. 2.UPON DISCOVERY OF POTENTIALLY SIGNIFICANT PALEONTOLOGICAL RESOURCES AND COMPLETION OF THE ABOVE MEASURES, THE OWNER/APPLICANT SHALL SUBMIT TO CITY OF SAN LUIS OBISPO A REPORT PREPARED BY THE QUALIFIED PALEONTOLOGIST DOCUMENTING ALL ACTIONS TAKEN. WORKER ENVIRONMENTAL AWARENESS PROGRAM TRAINING NOTES 1.PRIOR TO THE INITIATION OF CONSTRUCTION ACTIVITIES (INCLUDING STAGING AND MOBILIZATION), THE OWNER/APPLICANT SHALL ENSURE ALL PERSONNEL ASSOCIATED WITH PROJECT CONSTRUCTION ATTEND A WORKER ENVIRONMENTAL AWARENESS PROGRAM (WEAP) TRAINING. 2.THE TRAINING SHALL BE CONDUCTED BY A QUALIFIED BIOLOGIST, TO AID WORKERS IN RECOGNIZING SPECIAL STATUS RESOURCES THAT MAY OCCUR IN THE PROJECT AREA. THE SPECIFICS OF THIS PROGRAM SHALL INCLUDE IDENTIFICATION OF THE SENSITIVE SPECIES AND HABITATS, A DESCRIPTION OF THE REGULATORY STATUS AND GENERAL ECOLOGICAL CHARACTERISTICS OF SENSITIVE RESOURCES, AND REVIEW OF THE LIMITS OF CONSTRUCTION AND AVOIDANCE MEASURES REQUIRED TO REDUCE IMPACTS TO BIOLOGICAL RESOURCES WITHIN THE WORK AREA. A FACT SHEET CONVEYING THIS INFORMATION SHALL ALSO BE PREPARED FOR DISTRIBUTION TO ALL CONTRACTORS, THEIR EMPLOYERS, AND OTHER PERSONNEL INVOLVED WITH CONSTRUCTION OF THE PROJECT. ALL EMPLOYEES SHALL SIGN A FORM PROVIDED BY THE TRAINER DOCUMENTING THEY HAVE ATTENDED THE WEAP AND UNDERSTAND THE INFORMATION PRESENTED TO THEM. TRAFFIC NOTES 1.THE CONTRACTOR SHALL AT ALL TIMES MAINTAIN A MINIMUM OF ONE LANE OPEN TO TRAFFIC UNLESS OTHERWISE APPROVED BY THE ENGINEER. THE CONTRACTOR SHALL USE REVISED STANDARD PLAN T13 FOR WORK AFFECTING THE TRAVELED WAY. A.CONTRACTOR SHALL PROVIDE TRAFFIC CONTROL PLANS TO PUBLIC WORKS FOR EACH STAGE OF CONSTRUCTION PRIOR TO ISSUANCE OF ENCROACHMENT PERMIT. B.TRAFFIC CONTROL PLANS SHALL BE SUBMITTED TO PUBLIC WORKS, A MINIMUM OF TWO WEEKS PRIOR TO COMMENCEMENT OF WORK OR DETOURING OF TRAFFIC PATTERNS . C.TEMPORARY TRAFFIC CONTROL SHALL BE APPROVED BY THE ENGINEER PRIOR TO COMMENCEMENT OF WORK REQUIRING DETOURING OF TRAFFIC PATTERNS . D.ALL TRAFFIC CONTROL DEVICES SHALL BE INSTALLED PER AND SHALL CONFORM TO STATE OF CALIFORNIA MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (CAMUTCD, 2014) REQUIREMENTS. AREA DISTURBED TOTAL AREA DISTURBED = 101.71 Acres STORM WATER POLLUTION PREVENTION / EROSION AND SEDIMENTATION CONTROL NOTES 1.EROSION CONTROL MEASURES FOR WIND, WATER, MATERIAL STOCKPILES, AND TRACKING SHALL BE IMPLEMENTED ON ALL PROJECTS AT ALL TIMES AND SHALL INCLUDE SOURCE CONTROL, INCLUDING PROTECTION OF STOCKPILES, PROTECTION OF SLOPES, PROTECTION OF ALL DISTURBED AREAS, PROTECTION OF ACCESSES, AND PERIMETER CONTAINMENT MEASURES. EROSION CONTROL SHALL BE PLACED PRIOR TO THE COMMENCEMENT OF GRADING AND SITE DISTURBANCE ACTIVITIES UNLESS THE PUBLIC WORKS DEPARTMENT DETERMINES TEMPORARY MEASURES TO BE UNNECESSARY BASED UPON LOCATION, SITE CHARACTERISTICS OR TIME OF YEAR. THE INTENT OF EROSION CONTROL MEASURES SHALL BE TO KEEP ALL GENERATED SEDIMENTS FROM ENTERING A SWALE, DRAINAGE WAY, WATERCOURSE, ATMOSPHERE, OR MIGRATE ONTO ADJACENT PROPERTIES OR ONTO THE PUBLIC RIGHT-OF-WAY. 2.SITE INSPECTIONS AND APPROPRIATE MAINTENANCE OF ALL EROSION CONTROL MEASURES/DEVICES SHALL BE CONDUCTED AND DOCUMENTED AT ALL TIMES DURING CONSTRUCTION AND ESPECIALLY PRIOR TO, DURING, AND AFTER RAIN EVENTS. 3.THE DEVELOPER SHALL BE RESPONSIBLE FOR THE PLACEMENT AND MAINTENANCE OF ALL EROSION CONTROL MEASURES/DEVICES AS SPECIFIED BY THE APPROVED PLAN UNTIL SUCH TIME THAT THE PROJECT IS ACCEPTED AS COMPLETE BY THE PUBLIC WORKS DEPARTMENT OR UNTIL RELEASED FROM THE CONDITIONS OF APPROVAL OF THEIR GENERAL PERMIT. EROSION CONTROL MEASURES/DEVICES MAY BE RELOCATED, DELETED OR ADDITIONAL MEASURES/DEVICES MAY BE REQUIRED DEPENDING ON THE ACTUAL CONDITIONS ENCOUNTERED DURING CONSTRUCTION. ADDITIONAL EROSION CONTROL MEASURES/DEVICES SHALL BE PLACED AT THE DISCRETION OF THE ENGINEER OF WORK, CITY INSPECTOR, SWPPP MONITOR, OR RWQCB INSPECTOR. GUIDELINES FOR DETERMINING APPROPRIATE EROSION CONTROL DEVICES SHALL BE INCLUDED IN THE SWPPP. 4.EROSION CONTROL DEVICES SHALL BE THE FIRST ORDER OF WORK AND SHALL BE IN PLACE AT ALL TIMES DURING CONSTRUCTION. ADDITIONAL MEASURES /DEVICES SHALL BE AVAILABLE DURING THE RAINY SEASON (BETWEEN OCTOBER 15 AND APRIL 15) OR ANYTIME WHEN THE RAIN PROABALITY EXCEEDS 50%. THESE MEASURES/DEVICES SHALL BE AVAILABLE, INSTALLED, AND/OR APPLIED AFTER EACH AREA IS GRADED AND NO LATER THAN FIVE (5) WORKING DAYS AFTER COMPLETION OF EACH AREA. 5.THE CONTRACTOR, DEVELOPER, AND QUALIFIED SWPPP PRACTITIONER/DEVELOPER SHALL BE RESPONSIBLE TO REVIEW THE PROJECT SITE PRIOR TO OCTOBER 15 (RAINY SEASON) AND TO COORDINATE AN IMPLEMENTATION PLAN FOR WET WEATHER EROSION CONTROL DEVICES. A LOCALLY BASED STANDBY CREW FOR EMERGENCY WORK SHALL BE AVAILABLE AT ALL TIMES DURING THE RAINY SEASON (OCTOBER 15 THROUGH APRIL 15). NECESSARY MATERIALS SHALL BE AVAILABLE AND STOCK PILED AT CONVENIENT LOCATIONS TO FACILITATE RAPID CONSTRUCTION OR MAINTENANCE OF TEMPORARY DEVICES WHEN RAIN IS IMMINENT. 6.IN THE EVENT OF A FAILURE, THE DEVELOPER AND/OR THEIR REPRESENTATIVE SHALL BE RESPONSIBLE FOR CLEANUP AND ALL ASSOCIATED COSTS OR DAMAGE. IN THE EVENT THAT DAMAGE OCCURS WITHIN THE RIGHT-OF-WAY AND THE CITY IS REQUIRED TO PERFORM CLEANUP, THE OWNER SHALL BE RESPONSIBLE FOR CITY REIMBURSEMENT OF ALL ASSOCIATED COSTS OR DAMAGE. 7.IN THE EVENT OF FAILURE AND/OR LACK OF PERFORMANCE BY THE OWNER AND/OR CONTRACTOR TO CORRECT EROSION CONTROL RELATED PROBLEMS THE PUBLIC WORKS DEPARTMENT MAY REVOKE ALL ACTIVE PERMITS AND RECOMMEND THAT CITY CODE ENFORCEMENT PROVIDE A WRITTEN NOTICE OR STOP WORK ORDER. 8.PERMANENT EROSION CONTROL SHALL BE PLACED AND ESTABLISHED WITH 90% COVERAGE ON ALL DISTURBED SURFACES OTHER THAN PAVED OR GRAVEL SURFACES, PRIOR TO FINAL INSPECTION. PERMANENT EROSION CONTROL SHALL BE FULLY ESTABLISHED PRIOR TO FINAL ACCEPTANCE. TEMPORARY EROSION CONTROL MEASURES SHALL REMAIN IN PLACE UNTIL PERMANENT MEASURES ARE ESTABLISHED. 9.THE AIR POLLUTION CONTROL DISTRICT (APCD) MAY HAVE ADDITIONAL PROJECT SPECIFIC EROSION CONTROL REQUIREMENTS. THE CONTRACTOR AND DEVELOPER SHALL BE RESPONSIBLE FOR MAINTAINING SELF-REGULATION OF THESE REQUIREMENTS. 10.ALL PROJECTS INVOLVING SITE DISTURBANCE OF ONE ACRE OR GREATER SHALL COMPLY WITH THE REQUIREMENTS OF THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES). THE DEVELOPER SHALL SUBMIT A NOTICE OF INTENT (NOI) TO COMPLY WITH THE GENERAL PERMIT FOR CONSTRUCTION ACTIVITY WITH THE REGIONAL WATER QUALITY CONTROL BOARD (RWQCB). THE DEVELOPER SHALL PROVIDE THE CITY WITH THE WASTE DISCHARGE IDENTIFICATION NUMBER (WDID #) OR WITH VERIFICATION THAT AN EXEMPTION HAS BEEN GRANTED BY RWQCB. WDID NO.: TO BE DETERMINED PERSON TO CONTACT 24 HOURS A DAY IN THE EVENT THERE IS AN EROSION CONTROL/SEDIMENTATION PROBLEM (STORM WATER COMPLIANCE OFFICER): NAME:TO BE DETERMINED PHONE NO: TO BE DETERMINED 11.ALL DISTURBED AREAS SHALL BE HYDROSEEDED OR PLANTED WITH AN APPROVED EROSION CONTROL VEGETATION WITHIN 14 DAYS AFTER CONSTRUCTION IS COMPLETE. THE EROSION CONTROL SEED MIX IS AS FOLLOWS: EROSION CONTROL SEED MIX STEP 1:SEED AND SLURRY MIX QUANTITIES. S&S SEEDS BASIC EROSION CONTROL MIX OR APPROVED EQUAL SEED MIX LBS/ACRE (PURE LIVE SEED) BROMUS HORDEACEUS TRIFOLIUM HIRTUM VULPIA MYUROS VAR. HIRUSTA TOTAL 40.0 HYDROSEED SLURRY ADDITIVES LBS/ACRE CONWED 100% WOOD FIBER 2000 ECOLOGY CONTROLS M-BINDER 150 15-15-15 FERTILIZER 200 STEP 2:APPLY STRAW MULCH AT 4000 LBS/ACRE. STEP 3:TACK STRAW MATERIAL LBS/ACRE FIBER 500 BINDER 100 12.EFFECTIVE SOIL COVER WILL BE IMPLEMENTED FOR AREAS SCHEDULED TO BE INACTIVE FOR AT LEAST 14 DAYS AND ALL FINISHED SLOPES, OPEN SPACE, UTILITY BACKFILL, AND COMPLETED LOTS. 13.THE USE OF PLASTIC MATERIALS WILL BE LIMITED WHEN ALTERNATIVES EXIST. 14.EFFECTIVE WIND EROSION CONTROL SHALL BE IMPLEMENTED. 15.AFTER EACH RAIN STORM, REMOVE ALL SILT AND DEBRIS FROM EROSION & SEDIMENT CONTROL MEASURES, INCLUDING BASINS, SEDIMENT BASINS, SEDIMENT TRAPS, AND DIVERSION EARTH SWALES. 16.ALL EQUIPMENT/ VEHICLES WILL BE FUELED, MAINTAINED AND STORED IN THE DESIGNATED STAGING AREA FITTED WITH APPROPRIATE BMPs. 17.STORAGE AREAS FOR MATERIALS, WASTE, WATER STORAGE, WATER TRANSFER FOR DUST CONTROL AND COMPACTION PRACTICES SHALL BE LOCATED WITHIN THE DESIGNATED STAGING AREAS. 18.STOCKPILED CONSTRUCTION MATERIALS NOT BEING ACTIVELY USED SHALL BE COVERED AND BERMED PRIOR TO QUALIFYING RAIN EVENT. 19.TRACKING ONTO THE PUBLIC STREET SHALL BE MINIMIZED. THE ADJOINING STREETS SHALL BE CLEANED BY SWEEPING TO REMOVE DIRT, DUST, MUD AND CONSTRUCTION DEBRIS AT THE END OF EACH DAY. 20.TEMPORARY EROSION CONTROL MEASURES SHALL BE REMOVED WHEN PERMANENT IMPROVEMENTS, PLANTINGS, AND FACILITIES ARE IN PLACE. TEMPORARY MEASURES SHALL BE REMOVED PRIOR TO FINAL INSPECTION. 21.IT IS THE RESPONSIBILITY OF THE CONTRACTOR AND/OR QUALIFIED SWPPP PRACTITIONER (QSP) TO ENSURE THAT THE CURRENT VERSION OF THE SWPPP (INCLUDING ALL AMENDMENTS) IS BEING IMPLEMENTED BY ROUTINELY CHECKING THE PERMIT STATUS ON SMARTs AND VERIFYING WITH THE QUALIFIED SWPPP DEVELOPER (QSD). 22.IN ACCORDANCE WITH THE CONSTRUCTION GENERAL PERMIT, THE SWPPP SHALL BE KEPT ON SITE AT ALL TIMES AND MADE AVAILABLE UPON REQUEST BY A REPRESENTATIVE OF THE REGIONAL WATER QUALITY BOARD, EPA, OR LOCAL AGENCY. 23.MINIMIZE THE AMOUNT OF DISTURBED/EXPOSED AREA WHERE POSSIBLE. DISTURB ONLY AREAS NECESSARY TO COMPLETE THE WORK SHOWN IN THESE PLANS. 24.THE STORM WATER POLLUTION PREVENTION PLAN (SWPPP) IDENTIFIES POTENTIAL SOURCES OF POLLUTANTS OF STORM WATER, PRESENTS POLLUTION CONTROL MEASURES, AND ASSISTS IN ENSURING IMPLEMENTATION AND MAINTENANCE OF THE BEST MANAGEMENT PRACTICES (BMP'S). 25.IN THE EVENT OF A CHANGE OF OWNERSHIP, A NEW NOTICE OF INTENT SHALL BE FILED WITH THE STATE WATER RESOURCES CONTROL BOARD. 26.IN THE EVENT OF A RELEASE OF A REPORTABLE QUANTITY OF A POLLUTANT, THE CONTRACTOR SHALL ADVISE THE OWNER TO NOTIFY THE NATIONAL RESPONSE CENTER AND THE CITY OF SAN LUIS OBISPO. IF NECESSARY, THE SWPPP SHALL BE REVISED TO REFLECT THE CHANGE IN CONDITIONS OF THE CONSTRUCTION ACTIVITY. A REPORTABLE QUANTITY IS ESTABLISHED BY 40 CODE OF FEDERAL REGULATIONS (CFR) 117.3 OR 40 CFR 302.4. 27.ALL CONTRACTORS AND THEIR PERSONNEL WHOSE WORK CAN CONTRIBUTE TO OR CAUSE POLLUTION OF STORM WATER SHOULD BE MADE FAMILIAR WITH THE SWPPP. 28.CHANGES IN CONSTRUCTION OR IN CONDITIONS WHICH ARE NOT COVERED BY THIS PLAN SHOULD BE BROUGHT TO THE ATTENTION OF THE LEGALLY RESPONSIBLE PERSON (LRP) AND QUALIFIED SWPPP DEVELOPER (QSD). 29.ALL PREVENTION AND CLEAN UP MEASURES SHOULD BE CONDUCTED IN ACCORDANCE WITH CITY OF SAN LUIS OBISPO ORDINANCES, AS WELL AS STATE AND FEDERAL REGULATIONS. WASTE MATERIALS SHOULD BE DISPOSED OF IN A LEGAL MANNER. 30.ALL DISCHARGES OF STORM WATER MUST COMPLY WITH THE LAWFUL REQUIREMENTS OF THE CITY OF SAN LUIS OBISPO AND OTHER LOCAL AGENCIES REGARDING THE DISCHARGES OF STORM WATER TO STORM DRAIN SYSTEMS. 31.THIS PLAN DOES NOT COVER THE REMOVAL OF HAZARDOUS OR TOXIC WASTE. IN THE EVENT OF A DISCHARGE OR RELEASE OF A REPORTABLE QUANTITY OF TOXIC WASTE, CONSTRUCTION ACTIVITIES SHOULD BE STOPPED UNTIL THE SPILL CAN BE ASSESSED AND A MITIGATION REPORT PREPARED BY A QUALIFIED ENVIRONMENTAL CONSULTANT, AND IF NECESSARY, REVIEWED BY THE CITY OF SAN LUIS OBISPO AND ANY OTHER AGENCY HAVING JURISDICTION. 32.THE SWPPP SHALL BE MADE AVAILABLE TO THE PUBLIC UNDER SECTION 308(B) OF THE CLEAN WATER ACT. UPON REQUEST BY MEMBERS OF THE PUBLIC, THE DISCHARGER SHALL MAKE A COPY OF THE SWPPP AVAILABLE FOR REVIEW BY THE REGIONAL WATER QUALITY BOARD OR DIRECTLY TO THE REQUESTER. FIRE GENERAL NOTES 1.CONTRACTOR TO COMPLY WITH ALL APPLICABLE FIRE CODES FOR THIS PROJECT ALONG WITH THE FOLLOWING NFPA STANDARDS: 1.1.2019 CALIFORNIA FIRE CODE 1.2.2019 CALIFORNIA BUILDING CODE 1.3.2019 CALIFORNIA ELECTRIC CODE 1.4.NATIONAL FIRE CODE TITLE 19, PUBLIC SAFETY, CALIFORNIA ADMIN. CODE 1.5.2019 NFPA 24 INSTALLATION OF PRIVATE FIRE MAINS AND THEIR APPURTENANCES TO BUILDINGS 1.6.CITY OF SAN LUIS OBISPO STANDARDS FIRE SAFETY DURING CONSTRUCTION IN ACCORDANCE WITH THE UNIFORM FIRE CODE, THE PUBLIC RESOURCES CODE, AND THE HEALTH AND SAFETY CODE, THE FOLLOWING FIRE PREVENTION REQUIREMENTS APPLY DURING GRADING PHASE OF THIS PROJECT: 1.AN EMERGENCY REPORTING SYSTEM SHALL BE IN PLACE. 2.EMERGENCY ACCESS MUST BE MAINTAINED DURING CONSTRUCTION ACTIVITIES. 3.COMBUSTIBLE DEBRIS SHALL NOT ACCUMULATE WITHIN BUILDINGS 4.COMBUSTIBLE AND FLAMMABLE LIQUIDS SHALL BE STORED IN APPROVED CONTAINERS. 5.BURNING COMBUSTIBLE DEBRIS, NATURAL VEGETATION, OR ANY OTHER MATERIAL IS PROHIBITED. 6.TEMPORARY HEATING DEVICES SHALL BE OF AN APPROVED TYPE AND LOCATED AWAY FROM COMBUSTIBLES. 7.SMOKING SHALL BE PROHIBITED, EXCEPT IN DESIGNATED AREAS FREE OF COMBUSTIBLE MATERIALS. 8.OPEN FLAME DEVICES AND OTHER SOURCES OF IGNITION SHALL NOT BE LOCATED IN AREAS WHERE COMBUSTIBLE MATERIALS ARE BEING USED. 9.TEMPORARY ELECTRICAL WIRING (EXTENSION CORDS) SHALL BE APPROVED AND IN SAFE WORKING ORDER. SUCH WIRING SHALL BE USED FOR PORTABLE APPLIANCES AND SHALL BE IN SAFE WORKING ORDER AND SHALL NOT BE OVERLOADED. 10.OPERATIONS INVOLVING OPEN FLAME PRODUCING EQUIPMENT, CUTTING, WELDING OR GRINDING (HOT WORK EQUIPMENT AND ACTIVITY) SHALL BE CONDUCTED IN A MANNER TO PREVENT FLAMES AND/OR SPARKS FROM IGNITING ADJACENT COMBUSTIBLES OR EXPOSED COMBUSTIBLE CONSTRUCTION. 11.A FIRE WATCH MAY BE NECESSARY TO PREVENT IGNITION OF COMBUSTIBLES. 12.GRINDING, WELDING, CUTTING, AND ANY OTHER HOT WORK ACTIVITIES REQUIRE: 12.1.A MINIMUM 10 FEET RADIAL CLEARANCE OF ALL FLAMMABLE VEGETATION FROM AROUND SUCH OPERATION. 12.2.MAINTAIN A SHOVEL AND A WATER TYPE FIRE EXTINGUISHER AVAILABLE FOR USE AT THE IMMEDIATE AREA OF THE OPERATION. CONDITIONS OF APPROVAL FOR MASS GRADING 29.ANY JURISDICTIONAL PERMITS FROM AUTHORITIES OTHER THAN THE CITY, INCLUDING BUT NOT LIMITED TO, THOSE FROM THE ARMY CORPS OF ENGINEERS, CALIFORNIA FISH AND WILDLIFE SERVICE, AND THE REGIONAL WATER QUALITY CONTROL BOARD SHALL BE OBTAINED PRIOR TO THE CITY'S APPROVAL OF IMPROVEMENT PLANS AND THE DEVELOPER'S COMMENCING WITH WORK FOR ANY CONSTRUCTION PHASE SUBJECT TO THE JURISDICTION OF SUCH REGULATORY AGENCIES. 36.A SEPARATE DEMOLITION PERMIT WILL BE REQUIRED FROM THE BUILDING DIVISION FOR THE REMOVAL OF ANY EXISTING STRUCTURES AND RELATED INFRASTRUCTURE. BUILDING REMOVALS ARE SUBJECT TO THE BUILDING DEMOLITION REGULATIONS INCLUDING THE ADDITIONAL NOTIFICATION AND TIMING REQUIREMENTS FOR ANY STRUCTURE OVER 50 YEARS OLD. 40.THE IMPROVEMENT PLAN SUBMITTAL SHALL INCLUDE A COMPLETE CONSTRUCTION PHASING PLAN IN ACCORDANCE WITH THE MITIGATION MEASURES, CONDITIONS OF APPROVAL, CITY CODES, AND STANDARDS. A TRUCK CIRCULATION PLAN AND CONSTRUCTION MANAGEMENT AND STAGING PLAN SHALL BE INCLUDED WITH ANY DEMOLITION, STOCKPILE, GRADING, OR IMPROVEMENT PLAN SUBMITTAL. GENERAL TRUCK ROUTES SHALL BE SUBMITTED FOR REVIEW AND ACCEPTANCE BY THE CITY. THE ENGINEER OF RECORD SHALL PROVIDE A SUMMARY OF THE EXTENT OF CUT AND FILL WITH ESTIMATES ON THE YARDS OF IMPORT AND EXPORT MATERIAL. THE SUMMARY SHALL INCLUDE ROUGH GRADING, UTILITY TRENCH CONSTRUCTION, ROAD CONSTRUCTION, AC PAVING, CONCRETE DELIVERY, AND VERTICAL CONSTRUCTION LOADING ESTIMATES ON THE EXISTING CITY OF SAN LUIS OBISPO ROADWAYS. THE DEVELOPER SHALL EITHER: 1) COMPLETE ROADWAY DEFLECTION TESTING BEFORE AND AFTER CONSTRUCTION TO THE SATISFACTION OF THE CITY ENGINEER AND SHALL COMPLETE REPAIRS TO THE PRE-CONSTRUCTION CONDITION, OR 2) SHALL PAY A ROADWAY MAINTENANCE FEE IN ACCORDANCE WITH CITY ENGINEERING STANDARDS AND GUIDELINES, OR 2) SHALL PROPOSE A PAVEMENT REPAIR/REPLACEMENT PROGRAM SATISFACTORY TO THE CITY ENGINEER. THE ROADWAY IMPACTS ANALYSIS AND MITIGATION STRATEGY SHALL BE APPROVED PRIOR TO COMMENCING WITH GRADING OR CONSTRUCTION. 43.RETAINING WALL AND/OR RETAINING WALL/FENCE COMBINATIONS ALONG PROPERTY LINES SHALL BE APPROVED TO THE SATISFACTION OF THE PLANNING DIVISION AND SHALL CONFORM WITH THE ZONING REGULATIONS FOR ALLOWED COMBINED HEIGHTS OR SHALL BE APPROVED THROUGH THE ARC, SPECIFIC PLAN, OR SEPARATE FENCE HEIGHT EXCEPTION PROCESS. 52.ALL PROPOSED UTILITY INFRASTRUCTURE SHALL COMPLY WITH THE LATEST ENGINEERING DESIGN STANDARDS EFFECTIVE AT THE TIME OF IMPROVEMENT PLAN APPROVAL, AND SHALL HAVE ALIGNMENTS FOR MAINTENANCE OF PUBLIC INFRASTRUCTURE ACCEPTABLE TO THE PUBLIC WORKS DEPARTMENT. ALL PUBLIC UTILITIES SHALL BE WITHIN THE PUBLIC RIGHT OF WAY, AND FINAL ALIGNMENTS OF ALL WATER AND SEWER MAINS SHALL BE APPROVED BY THE UTILITIES ENGINEER. 54.CITY UTILITIES PROPOSED FOR LOCATION/ENCROACHMENT WITHIN THE COUNTY PORTIONS OF BUCKLEY ROAD, BUCKLEY ROAD EXTENSION, AND VACHELL LANE SHALL BE APPROVED BY THE CITY AND COUNTY VIA AN ENCROACHMENT PERMIT ISSUED BY THE COUNTY TO THE DEVELOPER OR CITY, AND PRIOR TO APPROVAL OF THE IMPROVEMENT PLANS. IF AN ENCROACHMENT PERMIT IS NOT ISSUED BY THE COUNTY, THE PLANS SHALL BE REVISED TO OMIT SAID ENCROACHMENT(S). 56.FINAL GRADES AND ALIGNMENTS OF ALL PUBLIC AND/OR PRIVATE WATER, RECYCLED WATER, SEWER AND STORM DRAINS SHALL BE APPROVED TO THE SATISFACTION OF THE PUBLIC WORKS DIRECTOR AND UTILITIES DEPARTMENT. THE FINAL LOCATION, CONFIGURATION, AND SIZING OF ON-SITE SERVICE LATERALS AND METERS SHALL BE APPROVED IN CONJUNCTION WITH THE REVIEW OF THE BUILDING PLANS, FIRE SPRINKLER PLANS, AND/OR PUBLIC IMPROVEMENT PLANS. 67. ANY PERMIT APPROVALS REQUIRED FROM THE ARMY CORPS OF ENGINEERS, CALIFORNIA FISH AND WILDLIFE SERVICE, OR THE REGIONAL WATER CONTROL BOARD SHALL BE SECURED AND PRESENTED TO THE CITY PRIOR TO THE APPROVAL OF ANY SUBDIVISION GRADING AND/OR IMPROVEMENTS RELATED TO THE JURISDICTIONAL AREA FOR EACH CONSTRUCTION PHASE. THE ENGINEER OF RECORD SHALL REVIEW THE PERMIT APPROVALS AND ANY SPECIFIC PERMIT CONDITIONS FOR COMPLIANCE WITH THE PLANS, SUBDIVISION IMPROVEMENT DESIGNS, DRAINAGE SYSTEM DESIGN/REPORT, AND SOILS REPORT. THE ENGINEER OF RECORD SHALL FORWARD THE PERMITS TO THE CITY WITH A NOTATION THAT HE OR SHE HAS REVIEWED THE PLANS AND DETERMINED THAT THE DESIGN OF THE IMPROVEMENTS ARE IN GENERAL CONFORMANCE WITH THE PERMITS. 68.THE PUBLIC IMPROVEMENT PLANS SUBMITTAL SHALL CLARIFY HOW ANY WETLANDS, CREEK CORRIDORS, AND RIPARIAN HABITAT AREAS WILL BE PRESERVED TO THE SATISFACTION OF THE NATURAL RESOURCES MANAGER. INCLUDE ANY SPECIFIC DETAILS FOR THE PROPOSED CREEK CROSSINGS IN ACCORDANCE WITH ANY PRESERVATION STRATEGIES, MITIGATION MEASURES, AND OTHER REQUIREMENTS AND NEEDED PERMITS FROM AGENCIES WITH JURISDICTION OR PERMITTING AUTHORITY. SENSITIVE AREAS SHALL BE STAKED, FENCED, OR OTHERWISE DELINEATED AND PROTECTED PRIOR TO COMMENCING WITH CONSTRUCTION, GRADING, OR GRUBBING. 69.THE DEVELOPER SHALL EXHAUST REASONABLE EFFORTS TO ERADICATE AND CONTROL THE EXPANSION OF ANY KNOWN NON-NATIVE INVASIVE PLANT SPECIES TO THE SATISFACTION OF THE NATURAL RESOURCES MANAGER. THESE PLANTS MAY REQUIRE TREATMENT IN ADVANCE AND PRIOR TO COMMENCING WITH GROUND DISTURBING ACTIVITIES AND GRADING. 70.EXPANSION INDEX TESTING OR OTHER SOILS ANALYSIS MAY BE REQUIRED ON A LOT-BY-LOT BASIS FOR ALL GRADED PADS AND FOR IN-SITU SOILS ON NATURAL LOTS IN ACCORDANCE WITH THE CURRENT BUILDING CODES OR AS OTHERWISE DEEMED NECESSARY BY THE CITY ENGINEER OR BUILDING OFFICIAL. 71.FINAL PAD CERTIFICATIONS SHALL INCLUDE THE CERTIFICATION OF PAD CONSTRUCTION AND ELEVATIONS. THE SOILS ENGINEER SHALL CERTIFY ALL GRADING PRIOR TO ACCEPTANCE OF THE PUBLIC IMPROVEMENTS AND/OR PRIOR TO BUILDING PERMIT ISSUANCE. THE CERTIFICATION SHALL INDICATE THAT THE GRADED PADS ARE SUITABLE FOR THEIR INTENDED USE. 72.CUT AND FILL SLOPES SHALL BE PROTECTED AS RECOMMENDED BY THE SOILS ENGINEER. BROW DITCHES, DRAINAGE COLLECTION DEVICES, AND DRAINAGE PIPING MAY BE REQUIRED. THE PUBLIC IMPROVEMENT PLANS AND FINAL MAP SHALL REFLECT ANY ADDITIONAL IMPROVEMENTS AND PRIVATE EASEMENTS NECESSARY FOR SLOPE PROTECTION AND MAINTENANCE. UNLESS OTHERWISE APPROVED FOR PUBLIC MAINTENANCE BY THE CITY ENGINEER, BROW DITCHES AND DRAINAGE COLLECTION DEVICES SHALL BE MAINTAINED BY PRIVATE PROPERTY OWNERS, A PROPERTY OWNER ASSOCIATION, CFD, HOMEOWNERS ASSOCIATION, OR FUNDED BY ANOTHER FUNDING MECHANISM. 73.A SEPARATE EASEMENT AGREEMENT FOR THE EXISTING UNNAMED CHANNELS, DRAINAGES, AND CREEK CORRIDORS SHALL BE APPROVED TO THE SATISFACTION OF THE CITY. THE EASEMENT AGREEMENT SHALL BE IN A FORMAT PROVIDED BY THE CITY. THE AGREEMENT SHALL INCLUDE THE CFD, HOMEOWNERS ASSOCIATION, OR PRIVATE PROPERTY OWNER MAINTENANCE RESPONSIBILITIES, LIMITATIONS IN USE WITHIN THE EASEMENT AREA, AND CITY ACCESS RIGHTS FOR MAINTENANCE IN AN EMERGENCY OR IF THE RESPONSIBLE PARTY FAILS TO MAINTAIN. 74.THE SUBDIVISION IMPROVEMENT PLANS SHALL INCLUDE A COMPLETE GRADING PLAN TO SHOW SITE ACCESSIBILITY IN ACCORDANCE WITH STATE AND FEDERAL REGULATIONS FOR ALL PUBLIC AND/OR PRIVATE ROADS, TRANSIT STOPS, TRAILS, PATHS, WALKS, BIKEWAYS, PARKS, AND BRIDGES WHERE APPLICABLE. THE SUBMITTAL SHALL PROVIDE ADDITIONAL ANALYSIS IF SITE ACCESSIBILITY WILL NOT BE PROVIDED AND FOR ANY FEATURE OR ELEMENT WHERE ACCESSIBILITY IS PURPORTEDLY NOT REQUIRED. THE ACCESSIBILITY REGULATIONS OR GUIDELINES IN EFFECT AT THE TIME OF SUBDIVISION IMPROVEMENT CONSTRUCTION WILL BE APPLIED. 75.THE SUBDIVISION IMPROVEMENT PLANS, GRADING PLANS, DRAINAGE PLANS, AND DRAINAGE REPORTS SHALL SHOW AND NOTE COMPLIANCE WITH CITY CODES, STANDARDS AND ORDINANCES, FLOODPLAIN MANAGEMENT REGULATIONS, SPECIFIC PLAN STORMWATER PROVISIONS, WATERWAYS MANAGEMENT PLAN DRAINAGE DESIGN MANUAL, AND THE POST CONSTRUCTION STORMWATER REGULATIONS AS PROMULGATED BY THE REGIONAL WATER QUALITY CONTROL BOARD, WHICHEVER PERTINENT SECTIONS ARE MORE RESTRICTIVE. 76.THE FINAL GRADING/RETAINING WALL DESIGNS PROPOSED ALONG THE CREEK CORRIDORS SHALL BY APPROVED TO THE SATISFACTION OF THE CITY ENGINEER, COMMUNITY DEVELOPMENT DIRECTOR, AND NATURAL RESOURCES MANAGER. THE DEVELOPER SHALL EXHAUST ALL REASONABLE EFFORTS TO PROVIDE NATURAL SLOPES, PLANTED ROCK SLOPES, GRAVITY WALLS, STACKED ROCK WALLS, OR OTHER APPROVED MATERIALS. WALL DESIGNS SHALL COMPLY WITH CITY ENGINEERING STANDARDS, THE WATERWAY MANAGEMENT PLAN, AND CITY POLICY/DESIGN GUIDELINES. THE PREFERRED WALL DESIGN(S) MAY REQUIRE ADDITIONAL ENCROACHMENT INTO THE CHANNEL AND/OR ADJOINING DEVELOPED LANDS. 77.THE IMPROVEMENT PLAN SUBMITTAL SHALL INCLUDE A COMPLETE GRADING, DRAINAGE, AND EROSION CONTROL PLAN. THE PROPOSED GRADING, DRAINAGE PLAN, AND REPORTS SHALL CONSIDER THE PROPOSED CONSTRUCTION PHASING. HISTORIC OFF-SITE AND UPSLOPE WATERSHEDS TRIBUTARY TO THE AREA OF PHASED CONSTRUCTION SHALL BE CONSIDERED. RUN-ON FROM ALL ADJOINING DEVELOPED OR UNDEVELOPED PARCELS SHALL BE CONSIDERED. 78.THE FINAL DRAINAGE REPORT AND IMPROVEMENT PLANS SHALL CONSIDER THE DRAINAGE IMPACTS FROM BOTH THE EXISTING PHASE 1 CONSTRUCTION AND BUILD-OUT RUN-ON FROM TRACT 2943 (EARTHWOOD). 79.THE FINAL DRAINAGE REPORT AND IMPROVEMENT PLANS SHALL CONSIDER RUN-ON FROM THE DEVELOPED PARCEL AT 125 VENTURE. THE PLANS SHALL CLARIFY THE PURPOSE AND INTENT OF THE EXISTING PARTIALLY FAILED CONCRETE CHANNEL LOCATED NEAR THE TOE OF SLOPE ALONG THE EASTERLY AND SOUTHERLY PROPERTY LINES OF 125 VENTURE. THE DEVELOPER SHALL WORK WITH THE UPSLOPE PROPERTY OWNER TO RESOLVE ANY MAINTENANCE ISSUES, SHALL ACCEPT THE DRAINAGE, OR SHALL NOTIFY THE CITY OF ANY ALTERNATE STRATEGY TO ADDRESS ANY CURRENT DRAINAGE SYSTEM FAILURES, CONCENTRATE DRAINAGE, AND EROSIVE OUTLET(S). 80.THE FINAL DRAINAGE REPORT AND IMPROVEMENT PLANS SHALL CONSIDER RUN-ON FROM THE UNDEVELOPED PARCEL LOCATED AT THE NORTHEAST CORNER OF VACHELL AND VENTURE. THE PLANS SHALL CLARIFY HOW THE HISTORIC DRAINAGE WILL BE COLLECTED AND CONVEYED IN AN APPROVED MANNER TO A NON-EROSIVE OUTLET. OFF-SITE IMPROVEMENTS NECESSARY TO RE-DIRECT, COLLECT, AND/OR CONVEY THE DRAINAGE SHALL BE INCLUDED IN THE SUBDIVISION IMPROVEMENT PLANS. 81.THE PROJECT PLAN AND REPORTS SHALL SHOW COMPLIANCE WITH THE CITY'S FLOODPLAIN MANAGEMENT REGULATIONS AND FEMA REQUIREMENTS. PORTIONS OF THE PROJECT ARE LOCATED WITHIN AN UNSTUDIED A ZONE. THE REQUIRED CONDITIONAL LETTER OF MAP REVISIONS BASED ON FILL (CLOMR-F) SHALL BE PROCESSED AND APPROVED BY FEMA PRIOR TO COMMENCEMENT OF CONSTRUCTION OR PLACEMENT OF FILL WITHIN THE SPECIAL FLOOD HAZARD AREA (SFHA). THE FINAL LOMR-F SHALL BE SUBMITTED TO FEMA, ALONG WITH THE REQUIRED COMMUNITY ACKNOWLEDGEMENT FORM, WITHIN 6 MONTHS OF THE COMPLETION OF THE GRADING FOR EACH PERTINENT PHASE OF CONSTRUCTION. THE COMMUNITY ACKNOWLEDGEMENT FORM MAY REQUIRE THE SIGNATURES OF BOTH THE CITY OF SAN LUIS OBISPO AND COUNTY OF SAN LUIS OBISPO. THE LOMR-F SHALL BE APPROVED BY FEMA PRIOR TO ACCEPTANCE OF THE FINAL BUILDING PAD AND DEVELOPMENT GRADES BY THE CITY OF SAN LUIS OBISPO AND PRIOR TO BUILDING PERMIT ISSUANCE A.THE REQUIRED CONDITIONAL LETTER OF MAP REVISIONS BASED ON FILL (CLOMR-F) SHALL BE PROCESSED AND APPROVED BY FEMA PRIOR TO COMMENCEMENT OF CONSTRUCTION OR PLACEMENT OF FILL WITHIN THE SPECIAL FLOOD HAZARD AREA (SFHA). B.THE FINAL LOMR-F SHALL BE SUBMITTED TO FEMA, ALONG WITH THE REQUIRED COMMUNITY ACKNOWLEDGEMENT FORM, WITHIN 6 MONTHS OF THE COMPLETION OF THE GRADING FOR EACH PERTINENT PHASE OF CONSTRUCTION. C.THE COMMUNITY ACKNOWLEDGEMENT FORM MAY REQUIRE THE SIGNATURES OF BOTH THE CITY OF SAN LUIS OBISPO AND COUNTY OF SAN LUIS OBISPO. THE LOMR-F SHALL BE APPROVED BY FEMA PRIOR TO ACCEPTANCE OF THE FINAL BUILDING PAD AND DEVELOPMENT GRADES BY THE CITY OF SAN LUIS OBISPO AND PRIOR TO BUILDING PERMIT ISSUANCE 82.THE REVISED 100-YEAR FLOOD LIMITS SHALL BE SHOWN AND NOTED ON THE IMPROVEMENT PLANS AND AN ADDITIONAL FINAL MAP SHEET FOR REFERENCE. THE DRAINAGE REPORT AND FINAL PLANS SHALL CLARIFY THE 100-YEAR FLOOD ELEVATIONS, CLEARANCES, AND FREEBOARD AT ALL NEW VEHICLE BRIDGE, PEDESTRIAN/BIKE BRIDGE, AND ANY PIPE BRIDGE CROSSINGS OF THE CREEK CORRIDORS. 83.THE FINAL DRAINAGE REPORT, POST CONSTRUCTION STORMWATER REGULATION COMPLIANCE STRATEGY, AND IMPROVEMENT PLANS SHALL INCLUDE ALL REQUIRED DESIGN DETAILS. THE FINAL REPORTS AND O & M MANUAL SHALL CONSIDER ANY NEED FOR ON-GOING MAINTENANCE. THE PLAN SHALL INCLUDE REASONABLE PROVISIONS FOR THE CAPTURE OF SILT, TRASH, AND DEBRIS THROUGH PRE-BASINS OR OTHER METHODS TO MINIMIZE THE IMPACTS TO THE DETENTION BASIN(S). 84.THE FINAL STORMWATER REPORTS, PLAN, AND PROGRAM SHALL INCLUDE CONSIDERATION OF SOLID WASTE/TRASH AND FLOATING TRASH REMOVAL FROM THE STORMDRAIN SYSTEM AND BMP'S PRIOR TO DISCHARGE TO THE ADJOINING CREEKS AND/OR WATERWAYS. THE STRATEGY SHALL CONSIDER ANY CITY OR STATE REGULATIONS OR GUIDELINES REGARDING TRASH REMOVAL AVAILABLE AT THE TIME OF PUBLIC IMPROVEMENT PLAN DEVELOPMENT AND SHALL BE APPROVED TO THE SATISFACTION OF THE CITY ENGINEER. 85.THE DEVELOPER SHALL PREPARE AN OPERATIONS AND MAINTENANCE MANUAL FOR REVIEW AND APPROVAL BY THE CITY IN CONJUNCTION WITH THE DEVELOPMENT OF ANY STORMWATER BMP'S THAT WILL BE MAINTAINED BY THE HOMEOWNERS ASSOCIATION, PROPERTY OWNER ASSOCIATION, CFD, OR BY PRIVATE PROPERTY OWNERS. A PRIVATE STORMWATER CONVEYANCE AGREEMENT SHALL BE RECORDED IN A FORMAT PROVIDED BY THE CITY PRIOR TO FINAL INSPECTION APPROVALS AND ACCEPTANCE OF SUBDIVISION IMPROVEMENTS. 86.THE SUBDIVIDER/DEVELOPER SHALL PROVIDE NOTIFICATION TO PRIVATE PROPERTY OWNERS REGARDING ANY INDIVIDUAL MAINTENANCE RESPONSIBILITY OF ANY PARKWAY OR BACKYARD STORMWATER BMP'S IN ACCORDANCE WITH SECTION E.2 OF THE RQWCB RESOLUTION R3-2013-0032. THE NOTIFICATION MAY BE BY NOTICE OF REQUIREMENTS OR OTHER METHOD ACCEPTABLE TO THE CITY. 87.THE STORMWATER IMPROVEMENTS OTHER THAN CITY STANDARD PUBLIC STORM DRAIN INFRASTRUCTURE SHALL BE MAINTAINED BY CFD, PRIVATE PROPERTY OWNERS, PROPERTY OWNER ASSOCIATION, AND/OR AN HOA. A SEPARATE ENCROACHMENT/HOLD HARMLESS AGREEMENT MAY BE REQUIRED IN CONJUNCTION WITH CERTAIN IMPROVEMENTS PROPOSED FOR LOCATION WITHIN THE PUBLIC RIGHTS-OF-WAY. 88.THE FINAL DETAILS FOR ANY PROPOSED BIO-RETENTION FACILITIES OR OTHER STORMWATER BMP'S LOCATED WITHIN THE PUBLIC RIGHT-OF-WAY SHALL BE APPROVED TO THE SATISFACTION OF THE CITY ENGINEER. THE PROJECT SOILS ENGINEER SHALL REVIEW AND PROVIDE RECOMMENDATIONS ON ANY PROPOSED SITE- CONSTRUCTED AND/OR PROPRIETARY RETENTION SYSTEMS. ANALYSIS OF IMPACTS TO THE PUBLIC IMPROVEMENTS, PROTECTION OF UTILITIES, AND METHODS TO MINIMIZE PIPING AND PROTECTION OF PRIVATE PROPERTIES SHALL BE ADDRESSED IN THE FINAL ANALYSIS. 89.THE PROPOSED DETENTION BASINS AND ANY PRE-BASIN SHALL BE DESIGNED IN ACCORDANCE WITH THE WATERWAYS MANAGEMENT PLAN DRAINAGE DESIGN MANUAL. THE PROPOSED SURFACE RUNOFF AND DRAINAGE FROM THE DETENTION BASIN(S) SHALL INCLUDE A NON-EROSIVE OUTLET TO AN APPROVED POINT OF DISCHARGE. THE OUTLET(S) DESIGN AND LOCATION SHOULD REPLICATE THE HISTORIC DRAINAGE WHERE FEASIBLE. ANY OFF-SITE DETENTION BASIN, TEMPORARY BASIN, OR OTHER DRAINAGE IMPROVEMENTS SHALL BE SUBJECT TO APPROVAL BY THE CITY. ANY REQUIRED OR PROPOSED OFF-SITE GRADING OR DRAINAGE IMPROVEMENTS SHALL BE COMPLETED WITHIN RECORDED EASEMENTS OR UNDER AN APPROPRIATE LICENSE OR OTHER PRIVATE AGREEMENT. 90.IF APPLICABLE, THE CC&R'S SHALL ENTITLE THE OWNERS OF THE COMMERCIAL LOTS, AND ANY PARCELS RESULTING FROM THE FURTHER SUBDIVISION OF THOSE PARCELS TO ANNEX TO THE HOA TO ALLOW A COMMON STORMWATER MANAGEMENT STRATEGY FOR THE SUBDIVISION, AT THE OPTION OF THOSE OWNERS UNLESS THEY WILL OTHERWISE BE SELF-CONTAINED IN REGARDS TO STORMWATER REQUIREMENTS. THE SUBSEQUENT DEVELOPMENT/RE-SUBDIVISIONS MAY, AT THE SOLE DISCRETION OF THOSE DEVELOPERS OR SUBDIVIDERS, ANNEX TO THE HOA, OR DEMONSTRATE TO THE SATISFACTION OF THE CITY HOW THEY WILL PROVIDE STORM DRAINAGE MITIGATION THROUGH THEIR OWN DEVELOPMENT STRATEGIES AND/OR SUBDIVISION DESIGNS AND THEIR OWN HOMEOWNERS ASSOCIATION/PROPERTY OWNER ASSOCIATIONS. THE ASSOCIATION OR PRIVATE PROPERTY OWNER SHALL PROVIDE FOR MAINTENANCE OF ALL PRIVATE COMMON AREA DRAINAGE CHANNELS, ON-SITE AND/OR SUB-REGIONAL DRAINAGE BASINS, WATER QUALITY TREATMENT AND CONVEYANCE IMPROVEMENTS. THE CC&R'S SHALL BE APPROVED BY THE CITY AND SHALL BE RECORDED PRIOR TO OR CONCURRENTLY WITH RECORDATION OF THE FINAL MAP. A NOTICE OF ANNEXATION OR OTHER APPROPRIATE MECHANISM TO ANNEX FUTURE PHASES OF THE SUBDIVISIONS INTO THE HOA, INCLUDING BUT NOT LIMITED TO ANY SHARED REGIONAL DETENTION BASIN, SHALL BE RECORDED CONCURRENTLY WITH THE MAP. 91. ANY EXISTING AREAS OF SWALE, CREEK AND/OR CHANNEL EROSION SHALL BE STABILIZED TO THE SATISFACTION OF THE CITY ENGINEER, NATURAL RESOURCES MANAGER, AND OTHER PERMITTING AGENCIES. THE EXISTING CHANNEL SHALL BE CLEARED OF ANY ILLEGAL DUMPING, CONSTRUCTION DEBRIS, GRADE LEVEL CROSSINGS, OR OTHER DELETERIOUS MATERIAL TO THE SATISFACTION OF THE CITY NATURAL RESOURCES MANAGER. 12/21/2022 R Know what's below. Call before you dig. ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS No t e s S h e e t 4 FILE NAME: 1493-0007-ECPN-TITL.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R CONDITIONS OF APPROVAL FOR MASS GRADING (Continue) 94.THE PROJECT SOILS ENGINEER SHALL REVIEW THE FINAL GRADING AND DRAINAGE PLANS AND LOW IMPACT DEVELOPMENT (LID) IMPROVEMENTS. THE SOILS REPORT SHALL INCLUDE SPECIFIC RECOMMENDATIONS RELATED TO PUBLIC IMPROVEMENTS, SITE DEVELOPMENT, UTILITY, AND BUILDING PAD/FOUNDATION CONSTRUCTION RELATED TO THE PROPOSED LID IMPROVEMENTS. THE PROJECT SOILS ENGINEERING REPORT SHALL BE REFERENCED ON THE FINAL MAP IN ACCORDANCE WITH THE SUBDIVISION REGULATIONS AND CITY ENGINEERING STANDARDS.. 95.A STORM WATER POLLUTION PREVENTION PLAN (SWPPP) IS REQUIRED IN ACCORDANCE WITH STATE AND LOCAL REGULATIONS. A HARD COPY OF THE SWPPP SHALL BE PROVIDED TO THE CITY IN CONJUNCTION WITH THE PUBLIC IMPROVEMENT PLAN SUBMITTAL AND SUBSEQUENT BUILDING PLAN SUBMITTALS. THE WATER DISCHARGE IDENTIFICATION (WDID) NUMBER SHALL BE INCLUDED BY REFERENCE ON ALL CONSTRUCTION PLANS SETS. AN EROSION CONTROL PLAN SHALL BE INCLUDED WITH THE IMPROVEMENT PLANS AND ALL BUILDING PLAN SUBMITTALS FOR DEMOLITIONS, GRADING, AND NEW CONSTRUCTION. 96.THE PROJECT DEVELOPMENT AND GRADING SHALL COMPLY WITH ALL AIR QUALITY STANDARDS AND MITIGATION MEASURES. THE DEVELOPER SHALL PROVIDE WRITTEN NOTIFICATION FROM THE COUNTY AIR POLLUTION CONTROL DISTRICT (APCD) TO THE CITY REGARDING COMPLIANCE WITH ALL LOCAL, STATE, AND FEDERAL REGULATIONS INCLUDING BUT NOT LIMITED TO THE NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS (NESHAP) REGULATIONS RELATED TO NATURALLY OCCURRING ASBESTOS (NOA) PRIOR TO PLAN APPROVAL, PERMITS, AND COMMENCING WITH DEVELOPMENT GRADING. 128.THE AGRICULTURAL AND OPEN SPACE AREAS SHALL BE DELINEATED AND PROTECTED PRIOR TO COMMENCING WITH ANY DEMOLITION, STOCKPILE, SUBDIVISION GRADING, AND DEVELOPMENT. THE DELINEATED AREAS SHALL BE SHOWN AND NOTED IN THE SWPPP AND SUBDIVISION IMPROVEMENT PLANS AND SHALL NOT BE USED FOR CONSTRUCTION STAGING, STOCKPILE, OR BORROW AREAS UNLESS SPECIFICALLY APPROVED BY THE CITY. 129.THE SUBDIVISION GRADING AND IMPROVEMENT PLANS SHALL INCLUDE DETAILS OF THE INTERFACE BETWEEN THE AGRICULTURAL FIELDS/ACCESS ROADS AND THE ADJOINING OPEN SPACE, CREEK CORRIDORS, PUBLIC ROADWAYS, AND CLASS 1 BIKEWAYS TO THE SATISFACTION OF THE CITY. THE PLAN SHALL INCLUDE TEMPORARY AND APPROPRIATE PERMANENT DELINEATION FENCING. THE PLAN SHALL INCLUDE A DETAILED GRADING AND DRAINAGE STRATEGY TO PROMOTE THE VIABILITY OF THE AGRICULTURAL OPERATIONS AND TO PROTECT ADJOINING PUBLIC IMPROVEMENTS. THE SUBMITTAL SHALL INCLUDE A DETAILED OPERATIONAL PLAN AND STRATEGY FOR STABILIZED AG FIELD ACCESS, EROSION CONTROL, WORKER PARKING, AND ACCESS CONTROLS. 130.PRE-CONSTRUCTION SURVEYS FOR THE VERNAL POOL FAIRY SHRIMP (VPFS) SHALL BE CONDUCTED WHERE APPROPRIATE (IN WETLAND HABITAT THAT COULD BE DISTURBED THROUGH DEVELOPMENT) CONSISTENT WITH THE REQUIREMENTS OF THE UNITED STATES FISH AND WILDLIFE SERVICE (USFWS). AS A RESULT OF SUCH SURVEYS, ENSURE THAT DIRECT OR INDIRECT EFFECTS TO INDIVIDUALS AND THEIR HABITAT ARE AVOIDED, CONSISTENT WITH THE REQUIREMENTS OF THE ENDANGERED SPECIES ACT THROUGH APPROPRIATE MEANS. THE USFWS SHALL BE CONSULTED FOR APPROPRIATE ACTION. THE APPLICANT SHALL OBTAIN A BIOLOGICAL OPINION FROM THE USFWS AND ANY ADDITIONAL AUTHORIZATION REQUIRED BY OTHER REGULATORY AGENCIES PRIOR TO THE COMMENCEMENT OF WORK WITHIN OR IMMEDIATELY ADJACENT TO POTENTIAL SUITABLE HABITAT. MITIGATION MEASURES AQ-1A: A CONSTRUCTION ACTIVITY MANAGEMENT PLAN (CAMP) SHALL BE INCLUDED AS PART OF PROJECT GRADING AND BUILDING PLANS AND SHALL BE SUBMITTED TO THE APCD AND TO THE CITY FOR REVIEW AND APPROVAL PRIOR TO THE START OF CONSTRUCTION. IN ADDITION, THE CONTRACTOR OR BUILDER SHALL DESIGNATE A PERSON OR PERSONS TO MONITOR THE DUST CONTROL PROGRAM AND TO ORDER INCREASED WATERING, AS NECESSARY, TO PREVENT TRANSPORT OF DUST OFFSITE. THEIR DUTIES SHALL INCLUDE HOLIDAYS AND WEEKEND PERIODS WHEN WORK MAY NOT BE IN PROGRESS. THE NAME AND TELEPHONE OF SUCH PERSONS SHALL BE PROVIDED TO THE APCD PRIOR TO LAND USE CLEARANCE FOR MAP RECORDATION AND GRADING. THE PLAN SHALL INCLUDE BUT NOT BE LIMITED TO THE FOLLOWING ELEMENTS: 29.A DUST CONTROL MANAGEMENT PLAN THAT ENCOMPASSES THE FOLLOWING DUST CONTROL MEASURES: ·REDUCE THE AMOUNT OF DISTURBED AREA WHERE POSSIBLE; ·WATER TRUCKS OR SPRINKLER TRUCKS SHALL BE USED DURING CONSTRUCTION TO KEEP ALL AREAS OF VEHICLE MOVEMENT DAMP ENOUGH TO PREVENT DUST FROM LEAVING THE SITE. AT A MINIMUM, THIS WOULD REQUIRE TWICE-DAILY APPLICATIONS. ALL DIRT STOCK PILE AREAS SHOULD BE SPRAYED DAILY AS NEEDED. INCREASED WATERING FREQUENCY WOULD BE REQUIRED WHEN WIND SPEEDS EXCEED 15 MILES PER HOUR (MPH). RECLAIMED WATER OR THE ONSITE WATER WELL (NON-POTABLE) SHALL BE USED WHEN POSSIBLE. THE CONTRACTOR OR BUILDER SHALL CONSIDER THE USE OF AN APCD-APPROVED DUST SUPPRESSANT WHERE FEASIBLE TO REDUCE THE AMOUNT OF WATER USED FOR DUST CONTROL; ·ALL DIRT STOCK-PILE AREAS SHALL BE SPRAYED DAILY AS NEEDED; ·PERMANENT DUST CONTROL MEASURES IDENTIFIED IN THE APPROVED PROJECT REVEGETATION AND LANDSCAPE PLANS SHOULD BE IMPLEMENTED AS SOON AS POSSIBLE FOLLOWING COMPLETION OF ANY SOIL DISTURBING ACTIVITIES; ·EXPOSED GROUND AREAS THAT ARE PLANNED TO BE REWORKED AT DATES GREATER THAN ONE MONTH AFTER INITIAL GRADING SHALL BE SOWN WITH A FAST GERMINATING NATIVE GRASS SEED AND WATERED UNTIL VEGETATION IS ESTABLISHED; ·ALL DISTURBED SOIL AREAS NOT SUBJECT TO REVEGETATION SHALL BE STABILIZED USING APPROVED CHEMICAL SOIL BINDERS, JUTE NETTING, OR OTHER METHODS APPROVED IN ADVANCE BY THE APCD; ·ALL ROADWAYS, DRIVEWAYS, SIDEWALKS, ETC. TO BE PAVED SHOULD BE COMPLETED AS SOON AS POSSIBLE. IN ADDITION, BUILDING PADS SHOULD BE LAID AS SOON AS POSSIBLE AFTER GRADING UNLESS SEEDING OR SOIL BINDERS ARE USED; ·VEHICLE SPEED FOR ALL CONSTRUCTION VEHICLES SHALL NOT EXCEED 15 MPH ON ANY UNPAVED SURFACE AT THE CONSTRUCTION SITE; ·ALL TRUCKS HAULING DIRT, SAND, SOIL, OR OTHER LOOSE MATERIALS ARE TO BE COVERED OR SHALL MAINTAIN AT LEAST TWO FEET OF FREEBOARD IN ACCORDANCE WITH CALIFORNIA VEHICLE CODE SECTION 23114; ·INSTALL WHEEL WASHERS WHERE VEHICLES ENTER AND EXIT UNPAVED ROADS ONTO STREETS, OR WASH OFF TRUCKS AND EQUIPMENT LEAVING THE SITE; ·SWEEP STREETS AT THE END OF EACH DAY IF VISIBLE SOIL MATERIAL IS CARRIED ONTO ADJACENT PAVED ROADS. WATER SWEEPERS WITH RECLAIMED WATER SHOULD BE USED WHERE FEASIBLE; ·ALL OF THESE FUGITIVE DUST MITIGATION MEASURES SHALL BE SHOWN ON GRADING AND BUILDING PLANS; AND ·THE CONTRACTOR OR BUILDER SHALL DESIGNATE A PERSON OR PERSONS TO MONITOR THE FUGITIVE DUST CONTROL EMISSIONS AND ENHANCE THE IMPLEMENTATION OF THE MEASURES AS NECESSARY TO MINIMIZE DUST COMPLAINTS, REDUCE VISIBLE EMISSIONS BELOW 20 PERCENT OPACITY, AND TO PREVENT TRANSPORT OF DUST OFFSITE. THEIR DUTIES SHALL INCLUDE HOLIDAY AND WEEKEND PERIODS WHEN WORK MAY NOT BE IN PROGRESS. THE NAME AND TELEPHONE NUMBER OF SUCH PERSONS SHALL BE PROVIDED TO THE APCD COMPLIANCE DIVISION PRIOR TO THE START OF ANY GRADING, EARTHWORK OR DEMOLITION. 2. IMPLEMENTATION OF THE FOLLOWING BACT FOR DIESEL-FUELED CONSTRUCTION EQUIPMENT, WHERE FEASIBLE. THE BACT MEASURES SHALL INCLUDE: ·USE OF TIER 3 AND TIER 4 OFF-ROAD EQUIPMENT AND 2010 ON-ROAD COMPLIANT ENGINES; ·REPOWERING EQUIPMENT WITH THE CLEANEST ENGINES AVAILABLE; AND ·INSTALLING CALIFORNIA VERIFIED DIESEL EMISSION CONTROL STRATEGIES. 3. IMPLEMENTATION OF THE FOLLOWING STANDARD AIR QUALITY MEASURES TO MINIMIZE DIESEL EMISSIONS: •MAINTAIN ALL CONSTRUCTION EQUIPMENT IN PROPER TUNE ACCORDING TO MANUFACTURER'S SPECIFICATIONS; •FUEL ALL OFF-ROAD AND PORTABLE DIESEL POWERED EQUIPMENT WITH CARB-CERTIFIED MOTOR VEHICLE DIESEL FUEL (NON-TAXED VERSION SUITABLE FOR USE OFF-ROAD). •USE DIESEL CONSTRUCTION EQUIPMENT MEETING CARB 'S TIER 2 CERTIFIED ENGINES OR CLEANER OFF- ROAD HEAVY-DUTY DIESEL ENGINES, AND COMPLY WITH THE STATE OFF-ROAD REGULATION; •USE ON-ROAD HEAVY-DUTY TRUCKS THAT MEET THE CARB'S 2007 OR CLEANER CERTIFICATION STANDARD FOR ON-ROAD HEAVY-DUTY DIESEL ENGINES AND COMPLY WITH THE STATE ON-ROAD REGULATION; •CONSTRUCTION OR TRUCKING COMPANIES WITH FLEETS THAT DO NOT HAVE ENGINES IN THEIR FLEET THAT MEET THE ENGINE STANDARDS IDENTIFIED IN THE ABOVE TWO MEASURES (E.G. CAPTIVE OR NOX EXEMPT AREA FLEETS) MAY BE ELIGIBLE BY PROVING ALTERNATIVE COMPLIANCE; •ON- AND OFF-ROAD DIESEL EQUIPMENT SHALL NOT BE ALLOWED TO IDLE FOR MORE THAN FIVE MINUTES. SIGNS SHALL BE POSTED IN THE DESIGNATED QUEUING AREAS TO REMIND DRIVERS AND OPERATORS OF THE FIVE-MINUTE IDLING LIMIT; •DIESEL IDLING WITHIN 1,000 FEET OF SENSITIVE RECEPTORS IN NOT PERMITTED; •STAGING AND QUEUING AREAS SHALL NOT BE LOCATED WITHIN 1,000 FEET OF SENSITIVE RECEPTORS; •ELECTRIFY EQUIPMENT WHEN FEASIBLE; •SUBSTITUTE GASOLINE-POWERED IN PLACE OF DIESEL-POWERED EQUIPMENT, WHERE FEASIBLE; AND, •USE ALTERNATIVELY FUELED CONSTRUCTION EQUIPMENT ONSITE WHERE FEASIBLE, SUCH AS COMPRESSED NATURAL GAS (CNG), LIQUEFIED NATURAL GAS (LNG), PROPANE OR BIODIESEL. 4. TABULATION OF ON- AND OFF-ROAD CONSTRUCTION EQUIPMENT (AGE, HORSE-POWER, AND MILES AND/OR HOURS OF OPERATION); 5. SCHEDULE CONSTRUCTION TRUCK TRIPS DURING NON-PEAK HOURS (AS DETERMINED BY THE PUBLIC WORKS DIRECTOR) TO REDUCE PEAK HOUR EMISSIONS; 6. LIMIT THE LENGTH OF THE CONSTRUCTION WORK-DAY PERIOD; AND 7. PHASE CONSTRUCTION ACTIVITIES, IF APPROPRIATE. BIO-1A: THE APPLICANT SHALL PREPARE AND IMPLEMENT A BIOLOGICAL MITIGATION PLAN THAT IDENTIFIES CONSTRUCTION-RELATED STAGING AND MAINTENANCE AREAS AND INCLUDES PROJECT-SPECIFIC CONSTRUCTION BEST MANAGEMENT PRACTICES (BMPS) TO AVOID OR MINIMIZE IMPACTS TO BIOLOGICAL RESOURCES, INCLUDING ALL MEASURES NEEDED TO PROTECT RIPARIAN WOODLAND ALONG TANK FARM CREEK, MINIMIZE EROSION, AND RETAIN SEDIMENT ON THE PROJECT SITE. SUCH BMPS SHALL INCLUDE (BUT NOT BE LIMITED TO) THE FOLLOWING: 1.CONSTRUCTION EQUIPMENT AND VEHICLES SHALL BE STORED AT LEAST 100 FEET AWAY FROM TANK FARM CREEK AND ADJACENT RIPARIAN HABITAT, AND ALL CONSTRUCTION VEHICLE MAINTENANCE SHALL BE PERFORMED IN A DESIGNATED OFFSITE VEHICLE STORAGE AND MAINTENANCE AREA. 2.PRIOR TO CONSTRUCTION ACTIVITIES ADJACENT TO TANK FARM CREEK, THE CREEK SHALL BE FENCED WITH ORANGE CONSTRUCTION FENCING AND SIGNED TO PROHIBIT ENTRY OF CONSTRUCTION EQUIPMENT AND PERSONNEL UNLESS AUTHORIZED BY THE CITY. FENCING SHOULD BE LOCATED A MINIMUM OF 20 FEET FROM THE EDGE OF THE RIPARIAN CANOPY OR TOP OF BANK, WHICHEVER IS FURTHER FROM THE CREEK, AND SHALL BE MAINTAINED THROUGHOUT THE CONSTRUCTION PERIOD FOR EACH PHASE OF DEVELOPMENT. 3.IN THE EVENT THAT CONSTRUCTION MUST OCCUR WITHIN THE CREEK OR 20-FOOT CREEK SETBACK, A BIOLOGICAL MONITOR SHALL BE PRESENT DURING ALL SUCH ACTIVITIES WITH THE AUTHORITY TO STOP OR REDIRECT WORK AS NEEDED TO PROTECT BIOLOGICAL RESOURCES. 4.CONSTRUCTION SHALL OCCUR DURING DAYLIGHT HOURS (7:00 AM TO 7:00 PM OR SUNSET, WHICHEVER IS SOONER) TO AVOID IMPACTS TO NOCTURNAL AND CREPUSCULAR (DAWN AND DUSK ACTIVITY PERIOD) SPECIES. NO CONSTRUCTION NIGHT LIGHTING SHALL BE PERMITTED WITHIN 100 YARDS OF THE TOP OF THE CREEK BANKS. 5.CONSTRUCTION EQUIPMENT SHALL BE INSPECTED AT THE BEGINNING OF EACH WORK DAY TO ENSURE THAT NO WILDLIFE SPECIES IS RESIDING WITHIN ANY CONSTRUCTION EQUIPMENT (E.G., SPECIES HAVE NOT CLIMBED INTO WHEEL WELLS, ENGINE COMPARTMENTS, OR UNDER TRACKS SINCE THE EQUIPMENT WAS LAST PARKED). ANY SENSITIVE WILDLIFE SPECIES FOUND DURING INSPECTIONS SHALL BE GENTLY ENCOURAGED TO LEAVE THE PROJECT SITE BY A QUALIFIED BIOLOGIST OR OTHERWISE TRAINED AND CITY-APPROVED PERSONNEL. 6.PALLETS OR SECONDARY CONTAINMENT AREAS FOR CHEMICALS, DRUMS, OR BAGGED MATERIALS SHALL BE PROVIDED. SHOULD MATERIAL SPILLS OCCUR, MATERIALS AND/OR CONTAMINANTS SHALL BE CLEANED FROM THE PROJECT SITE AND RECYCLED OR DISPOSED OF TO THE SATISFACTION OF THE REGIONAL WATER QUALITY CONTROL BOARD (RWQCB). 7.ALL TRASH AND CONSTRUCTION DEBRIS SHALL BE PICKED UP AND PROPERLY DISPOSED AT THE END OF EACH DAY AND WASTE DUMPSTERS SHALL BE COVERED WITH PLASTIC SHEETING AT THE END OF EACH WORKDAY AND DURING STORM EVENTS. ALL SHEETING SHALL BE CAREFULLY SECURED TO WITHSTAND WEATHER CONDITIONS. 8.THE APPLICANT SHALL IMPLEMENT EROSION CONTROL MEASURES DESIGNED TO MINIMIZE EROSION AND RETAIN SEDIMENT ON THE PROJECT SITE. SUCH MEASURES SHALL INCLUDE INSTALLATION OF SILT FENCING, STRAW WADDLES, OR OTHER ACCEPTABLE EROSION CONTROL DEVICES ALONG THE PERIMETER OF TANK FARM CREEK AND AT THE PERIMETER OF ALL CUT OR FILL SLOPES. ALL DRAINAGE SHALL BE DIRECTED TO SEDIMENT BASINS DESIGNED TO RETAIN ALL SEDIMENT ONSITE. 9.CONCRETE TRUCK AND TOOL WASHOUT SHOULD OCCUR IN A DESIGNATED LOCATION SUCH THAT NO RUNOFF WILL REACH THE CREEK. 10.ALL OPEN TRENCHES SHALL BE CONSTRUCTED WITH APPROPRIATE EXIT RAMPS TO ALLOW SPECIES THAT INCIDENTALLY FALL INTO A TRENCH TO ESCAPE. ALL OPEN TRENCHES SHALL BE INSPECTED AT THE BEGINNING OF EACH WORK DAY TO ENSURE THAT NO WILDLIFE SPECIES IS PRESENT. ANY SENSITIVE WILDLIFE SPECIES FOUND DURING INSPECTIONS SHALL BE GENTLY ENCOURAGED TO LEAVE THE PROJECT SITE BY A QUALIFIED BIOLOGIST OR OTHERWISE TRAINED AND CITY-APPROVED PERSONNEL. TRENCHES WILL REMAIN OPEN FOR THE SHORTEST PERIOD NECESSARY TO COMPLETE REQUIRED WORK. EXISTING FACILITIES AND DISTURBED AREAS SHALL BE USED TO THE MAXIMUM EXTENT POSSIBLE TO MINIMIZE THE AMOUNT OF DISTURBANCE OF UNDEVELOPED AREAS AND ALL CONSTRUCTION ACCESS ROADS AND STAGING AREAS SHALL BE LOCATED TO AVOID HIGH QUALITY HABITAT AND MINIMIZE HABITAT FRAGMENTATION. BIO-1B: THE APPLICANT SHALL RETAIN A QUALIFIED ENVIRONMENTAL MONITOR, SUBJECT TO REVIEW AND APPROVAL BY THE CITY AND IN CONSULTATION WITH CDFW, RWQCB, AND USFWS TO OVERSEE COMPLIANCE OF THE CONSTRUCTION ACTIVITIES WITH THE BIOLOGICAL MONITORING PLAN AND APPLICABLE LAWS, REGULATIONS, AND POLICIES. THE ENVIRONMENTAL MONITOR SHALL MONITOR ALL CONSTRUCTION ACTIVITIES, CONDUCT A BIOLOGICAL RESOURCES EDUCATION PROGRAM FOR ALL CONSTRUCTION WORKERS PRIOR TO THE INITIATION OF ANY CLEARING OR CONSTRUCTION ACTIVITIES, AND PROVIDE QUARTERLY REPORTS TO THE CITY REGARDING CONSTRUCTION ACTIVITIES, ENFORCEMENT ISSUES AND REMEDIAL MEASURES. THE ENVIRONMENTAL MONITOR SHALL BE RESPONSIBLE FOR CONDUCTING INSPECTIONS OF THE WORK AREA EACH WORK DAY TO ENSURE THAT EXCAVATION AREAS, RESTORED HABITATS, AND OPEN WATER HABITATS IN THE AREA DO NOT HAVE OIL SHEEN, LIQUID OIL, OR ANY OTHER POTENTIAL EXPOSURE RISK TO WILDLIFE. IF ANY EXPOSURE RISK IS IDENTIFIED, THE ENVIRONMENTAL MONITOR SHALL IMPLEMENT MEASURES THAT COULD INCLUDE, BUT ARE NOT LIMITED TO, HAZING, FENCING, AND WILDLIFE REMOVALS TO ELIMINATE THE EXPOSURE RISK. IN ADDITION, A CDFW-APPROVED BIOLOGIST SHALL BE PRESENT DURING ALL CONSTRUCTION OCCURRING WITHIN 50 FEET OF TANK FARM CREEK, RIPARIAN HABITAT, DRAINAGES, AND SEASONAL OR PERMANENT WETLANDS. THE BIOLOGIST SHALL ALSO CONDUCT SENSITIVE SPECIES SURVEYS IMMEDIATELY PRIOR TO CONSTRUCTION ACTIVITIES (WITHIN THE APPROPRIATE SEASON) AND SHALL MONITOR CONSTRUCTION ACTIVITIES IN THE VICINITY OF HABITATS TO BE AVOIDED (SEE ALSO, MM BIO-3 AND ALL SUBPARTS BELOW). THE WORK AREA BOUNDARIES AND OTHER OFF-LIMIT AREAS SHALL BE IDENTIFIED BY THE BIOLOGIST AND/OR ENVIRONMENTAL MONITOR ON A DAILY BASIS. THE BIOLOGIST AND/OR ENVIRONMENTAL MONITOR SHALL INSPECT CONSTRUCTION AND SEDIMENT CONTROL FENCING EACH WORK DAY DURING CONSTRUCTION ACTIVITIES TO ENSURE THAT SENSITIVE SPECIES ARE NOT EXPOSED TO HAZARDS. ANY VEGETATION CLEARING ACTIVITIES SHALL BE MONITORED BY THE BIOLOGIST AND/OR ENVIRONMENTAL MONITOR. BIO-2A: MITIGATION MEASURE BIO-2A. PROJECT DESIGNS SHALL BE MODIFIED TO REALIGN THE TANK FARM CLASS I BICYCLE PATH AND RELOCATE MANUFACTURED SLOPES FOR HOUSING PADS IN ORDER TO CREATE A MINIMUM OF A 35-FOOT CREEK SETBACK FROM EITHER THE TOP OF THE BANK OF TANK FARM CREEK OR EDGE OF RIPARIAN HABITAT, WHICHEVER IS FURTHER, FOR AT LEAST 90 PERCENT OF CORRIDOR LENGTH. NO MORE THAN 10 PERCENT OF THE LENGTH OF THE CORRIDOR ( 700 LINEAR FEET) SHALL HAVE A SETBACK OF LESS THAN 35 FEET, BUT AT LEAST 20 FEET FROM THE TOP OF THE BANK OR EDGE OF RIPARIAN CANOPY, WHICHEVER IS FURTHER. HOWEVER, IN ANY INSTANCE THE CREEK SETBACK SHALL BE NO LESS THAN 20 FEET FROM THE EDGE OF RIPARIAN CANOPY OR TOP OF BANK, WHICHEVER IS FURTHER, CONSISTENT WITH SECTION 17.16.025 OF THE CITY OF SAN LUIS OBISPO ZONING REGULATIONS. BIO-2E: TO MINIMIZE IMPACTS TO RIPARIAN HABITAT, THE PROJECT SHALL STOCKPILE SUFFICIENT EMERGENT VEGETATION (E.G., CATTAILS) FOR LATER PLANTING IN THE REALIGNED REACH OF TANK FARM CREEK. STOCKPILED VEGETATION SHALL BE PLACED IN EARTHEN BASINS WITH THE ROOTS COVERED WITH MOIST SOIL AND MAINTAINED IN A MOIST CONDITION DURING CONSTRUCTION OPERATIONS. BIO-2I: TO REDUCE EROSION AND RUNOFF FROM ALL EXPOSED SOILS, ALL BARE DISTURBED SOILS SHALL BE HYDROSEEDED AT THE COMPLETION OF GRADING FOR EACH CONSTRUCTION PHASE. THE SEED MIX SHALL CONTAIN A MINIMUM OF THREE LOCALLY NATIVE GRASS SPECIES AND MAY CONTAIN ONE OR TWO STERILE NON-NATIVE GRASSES NOT TO EXCEED 25 PERCENT OF THE TOTAL SEED MIX BY COUNT. SEEDING SHALL BE COMPLETED NO LATER THAN NOVEMBER 15 OF THE YEAR IN WHICH PROJECT ACTIVITIES OCCURRED. ALL EXPOSED AREAS WHERE SEEDING IS CONSIDERED UNSUCCESSFUL AFTER 90 DAYS SHALL RECEIVE A SECOND APPLICATION OR SEEDING, STRAW, OR MULCH AS SOON AS IS PRACTICAL TO REDUCE EROSION. BIO-2J: THE TANK FARM CREEK CLASS I BICYCLE PATH BRIDGE FOOTINGS FOR CREEK CROSSINGS SHALL BE PLACED OUTSIDE MAPPED RIPARIAN AREAS AND OUTSIDE THE TOP OF THE BANK OF THE CHANNEL INVERT. THE CLASS I BRIDGES SHALL BE LOCATED WITHIN AREAS THAT HAVE LITTLE TO NO RIPARIAN VEGETATION. NO CONSTRUCTION ACTIVITIES OR EQUIPMENT SHALL OCCUR IN THE STREAM CHANNEL. THE PLACEMENT OF THE BRIDGE AND FOOTINGS SHALL BE INDICATED ON THE DEVELOPMENT PLAN, VTM, AND BIOLOGICAL MITIGATION PLAN, AND SHALL SHOW THE BRIDGES' PLACEMENT IN RELATION TO EXISTING VEGETATION AND THE CREEK CHANNEL AND BANKS. BIO 3A: THE CITY-APPROVED QUALIFIED BIOLOGIST SHALL CONDUCT TRAINING TO ALL CONSTRUCTION PERSONNEL TO FAMILIARIZE CONSTRUCTION CREWS WITH SENSITIVE SPECIES THAT HAVE THE POTENTIAL TO OCCUR WITHIN THE PROJECT SITE. THIS MAY INCLUDE BUT IS NOT LIMITED TO: CALIFORNIA RED-LEGGED FROG, WESTERN POND TURTLE, STEELHEAD TROUT, BATS, MIGRATORY BIRDS, AND CONGDON'S TARPLANT. THE EDUCATIONAL PROGRAM SHALL INCLUDE A DESCRIPTION WHAT CONSTITUTES TAKE, PENALTIES FOR TAKE, AND THE GUIDELINES THAT WOULD BE FOLLOWED BY ALL CONSTRUCTION PERSONNEL TO AVOID TAKE OF SPECIES DURING CONSTRUCTION ACTIVITIES. DESCRIPTIONS OF THE CALIFORNIA RED-LEGGED FROG AND ITS HABITS, CONGDON'S TARPLANT, NESTING AND MIGRATORY BIRDS THAT MAY BE ENCOUNTERED, AND ALL OTHER SENSITIVE SPECIES THAT HAVE A POTENTIAL TO OCCUR WITHIN THE VICINITY OF PROJECT CONSTRUCTION SHALL BE PROVIDED. THE CONSTRUCTION CREW FOREMAN SHALL BE RESPONSIBLE FOR ENSURING THAT CREW MEMBERS COMPLY WITH THE GUIDELINES AND THAT ALL NEW PERSONNEL RECEIVE THE TRAINING BEFORE PARTAKING IN CONSTRUCTION ACTIVITIES. BIO-3B: THE BIOLOGICAL MITIGATION PLAN SHALL ADDRESS WILDLIFE AND SPECIAL STATUS SPECIES MOVEMENT AS FOLLOWS: MIGRATORY AND NESTING BIRD MANAGEMENT. GRADING AND CONSTRUCTION ACTIVITIES SHALL AVOID THE BREEDING SEASON (TYPICALLY ASSUMED TO BE FROM FEBRUARY 15 TO AUGUST 15) TO THE EXTENT PRACTICABLE, PARTICULARLY WITHIN 50 FEET OF TANK FARM CREEK AND RIPARIAN OR WETLAND HABITAT. IF PROJECT ACTIVITIES MUST BE CONDUCTED DURING THIS PERIOD, PRE-CONSTRUCTION NESTING BIRD SURVEYS SHALL TAKE PLACE WITHIN ONE WEEK OF HABITAT DISTURBANCE ASSOCIATED WITH EACH PHASE, AND IF ACTIVE NESTS ARE LOCATED, THE FOLLOWING SHALL BE IMPLEMENTED: •CONSTRUCTION ACTIVITIES WITHIN 50 FEET OF ACTIVE NESTS SHALL BE RESTRICTED UNTIL CHICKS HAVE FLEDGED, UNLESS THE NEST BELONGS TO A RAPTOR, IN WHICH CASE A 200-FOOT ACTIVITY RESTRICTION BUFFER SHALL BE OBSERVED. •A PRE-CONSTRUCTION SURVEY REPORT SHALL BE SUBMITTED TO THE CITY IMMEDIATELY UPON COMPLETION OF THE SURVEY. THE REPORT SHALL DETAIL APPROPRIATE FENCING OR FLAGGING OF THE BUFFER ZONE AND MAKE RECOMMENDATIONS ON ADDITIONAL MONITORING REQUIREMENTS. A MAP OF THE PROJECT SITE AND NEST LOCATIONS SHALL BE INCLUDED WITH THE REPORT. •THE PROJECT BIOLOGIST CONDUCTING THE NESTING SURVEY SHALL HAVE THE AUTHORITY TO REDUCE OR INCREASE THE RECOMMENDED BUFFER DEPENDING UPON SITE CONDITIONS AND THE SPECIES INVOLVED. A REPORT OF FINDINGS AND RECOMMENDATIONS FOR BIRD PROTECTION SHALL BE SUBMITTED TO THE CITY PRIOR TO VEGETATION REMOVAL. BAT COLONY MANAGEMENT. PRIOR TO REMOVAL OF ANY TREES OVER 20 INCHES DIAMETER-AT-BREAST- HEIGHT (DBH), A SURVEY SHALL BE CONDUCTED BY A CDFW-APPROVED QUALIFIED BIOLOGIST TO DETERMINE IF ANY TREE PROPOSED FOR REMOVAL OR TRIMMING HARBORS SENSITIVE BAT SPECIES OR MATERNAL BAT COLONIES. MATERNAL BAT COLONIES SHALL NOT BE DISTURBED. IF A NON-MATERNAL ROOST IS FOUND, THE QUALIFIED BIOLOGIST SHALL INSTALL ONE-WAY VALVES OR OTHER APPROPRIATE PASSIVE RELOCATION METHOD. FOR EACH OCCUPIED ROOST REMOVED, ONE BAT BOX SHALL BE INSTALLED IN SIMILAR HABITAT AND SHALL HAVE SIMILAR CAVITIES OR CREVICES TO THOSE WHICH ARE REMOVED, INCLUDING ACCESS, VENTILATION, DIMENSIONS, HEIGHT ABOVE GROUND, AND THERMAL CONDITIONS. IF A BAT COLONY IS EXCLUDED FROM THE PROJECT SITE, APPROPRIATE ALTERNATE BAT HABITAT SHALL BE INSTALLED IN THE PROJECT SITE. TO THE EXTENT PRACTICABLE, ALTERNATE BAT HOUSE INSTALLATION SHALL BE INSTALLED NEAR THE ONSITE DRAINAGE. CONGDON'S TARPLANT MANAGEMENT. PRIOR TO INITIATION OF CONSTRUCTION, THE APPLICANT SHALL FUND A SITE SURVEY FOR CONGDON'S TARPLANT, AND: ·IF CONGDON'S TARPLANT IS FOUND IN AREAS PROPOSED FOR BUILDING, THE AFFECTED INDIVIDUALS SHALL BE REPLACED AT A 1:1 RATIO THROUGH SEEDING IN A SUITABLE CONSERVED NATURAL OPEN SPACE AREA. ·A MITIGATION AND MONITORING PLAN FOR THE SPECIES SHALL BE DEVELOPED CONSISTENT WITH APPLICABLE SCIENTIFIC LITERATURE PERTINENT TO THIS SPECIES. THE PLAN SHALL PROVIDE FOR THE ANNUAL SUCCESS OVER AN AREA OF AT LEAST 1,330 SQUARE FEET WITH APPROXIMATELY 500-750 INDIVIDUALS (THE CURRENT AERIAL EXTENT) AND BE IMPLEMENTED TO REDUCE IMPACTS TO CONGDON'S TARPLANT TO A LESS THAN SIGNIFICANT LEVEL. · THE MITIGATION PLAN SHALL BE INCORPORATED INTO THE BIOLOGICAL MITIGATION PLAN, WHEREIN WETLAND SITES SHALL BE CREATED AND CONGDON'S TARPLANT SEEDS FROM THE SITE SHALL BE REINTRODUCED. SENSITIVE SPECIES MANAGEMENT. INJURY OR MORTALITY TO THE CALIFORNIA RED-LEGGED FROG, WESTERN POND TURTLE, AND STEELHEAD SHALL BE AVOIDED. THE PLAN SHALL INCLUDE THE FOLLOWING MEASURES: PRE- PROJECT SURVEYS; WORKER AWARENESS; CESSATION OF WORK IN OCCUPIED AREAS; RELOCATION (IF NECESSARY) OF FROGS, TURTLES, AND STEELHEAD FROM THE WORK AREA BY A PROFESSIONAL BIOLOGIST AUTHORIZED BY THE USFWS AND/OR CDFW; AND MONITORING BY A QUALIFIED BIOLOGIST DURING CONSTRUCTION. NECESSARY PERMITS SHALL BE OBTAINED FROM THE STATE (CDFW) AND FEDERAL (USACE AND USFWS) REGULATORY AGENCIES WITH JURISDICTION. ANY OTHER SENSITIVE SPECIES OBSERVED DURING THE PRE-CONSTRUCTION SURVEYS SHALL BE RELOCATED OUT OF HARM'S WAY BY THE QUALIFIED BIOLOGIST INTO THE NEAREST SUITABLE HABITAT AS DETERMINED IN CONSULTATION WITH THE JURISDICTIONAL RESOURCE AGENCY OUTSIDE THE DISTURBANCE AREA. BIO-3C: WITHIN 48 HOURS PRIOR TO CONSTRUCTION ACTIVITIES WITHIN 50 FEET OF TANK FARM CREEK, DRAINAGES, AND SEASONAL WETLANDS, THE PROJECT SITE SHALL BE SURVEYED FOR CALIFORNIA RED-LEGGED FROGS BY A QUALIFIED BIOLOGIST. IF ANY CALIFORNIA RED-LEGGED FROGS ARE FOUND, WORK WITHIN 25 LINEAR FEET IN ANY DIRECTION OF THE FROG SHALL NOT START UNTIL THE FROG HAS BEEN MOVED FROM THE AREA. THE USFWS SHALL BE CONSULTED FOR APPROPRIATE ACTION; THE APPLICANT SHALL OBTAIN A BIOLOGICAL OPINION FROM THE USFWS AND ANY ADDITIONAL AUTHORIZATION REQUIRED BY OTHER REGULATORY AGENCIES PRIOR TO THE COMMENCEMENT OF WORK. THE USFWS-QUALIFIED BIOLOGIST, ENVIRONMENTAL MONITOR, OR USFWS PERSONNEL MAY DETERMINE THAT FROG-EXCLUSION FENCING IS NECESSARY TO PREVENT OVERLAND MOVEMENT OF FROGS IF CONCERNS ARISE THAT FROGS COULD ENTER CONSTRUCTION AREAS. FROG-EXCLUSION FENCING SHOULD CONTAIN NO GAPS AND MUST EXTEND AT LEAST 18 INCHES ABOVE GROUND; FENCES MAY BE OPENED DURING PERIODS OF NO CONSTRUCTION (E.G., WEEKENDS) TO PREVENT ENTRAPMENT. BIO-3D: WITHIN 48 HOURS PRIOR TO CONSTRUCTION ACTIVITIES WITHIN 50 FEET OF TANK FARM CREEK, DRAINAGES, SEASONAL WETLANDS, AND RIPARIAN HABITAT, THE PROJECT SITE SHALL BE SURVEYED FOR WESTERN POND TURTLES BY A QUALIFIED BIOLOGIST. IF ANY WESTERN POND TURTLES ARE FOUND, WORK SHALL CEASE UNTIL THE TURTLE IS RELOCATED TO THE NEAREST SUITABLE HABITAT. THE QUALIFIED BIOLOGIST SHALL MONITOR ALL GROUND BREAKING WORK CONDUCTED WITHIN 50 FEET OF WESTERN POND TURTLE HABITAT. THE CITY-APPROVED BIOLOGIST ENVIRONMENTAL MONITOR MAY DETERMINE THAT SILT FENCING SHALL BE INSTALLED ADJACENT TO WESTERN POND TURTLE HABITAT IF CONCERNS ARISE THAT THE WESTERN POND TURTLE OVERLAND MOVEMENT COULD ALLOW THEM TO ACCESS CONSTRUCTION AREAS. BIO-4: THE REQUIRED BIOLOGICAL MITIGATION PLAN SHALL ADDRESS BAT COLONIES FOR THE BUCKLEY ROAD EXTENSION SITE. BAT SURVEYS SHALL BE CONDUCTED IN BUILDINGS PROPOSED FOR DEMOLITION. IF SURVEYS DETERMINE BATS ARE PRESENT, BAT EXCLUSION DEVICES SHALL BE INSTALLED BETWEEN AUGUST AND NOVEMBER, AND BUILDING DEMOLITION WOULD OCCUR BETWEEN NOVEMBER AND MARCH. IF DEMOLITION OF STRUCTURES MUST OCCUR DURING THE BAT BREEDING SEASON, BUILDINGS MUST BE INSPECTED AND DEEMED CLEAR OF BAT COLONIES /ROOSTS WITHIN SEVEN DAYS OF DEMOLITION AND AN APPROPRIATELY TRAINED AND APPROVED BIOLOGIST MUST CONDUCT A DAILY SITE-CLEARANCE DURING DEMOLITION. IF BATS ARE ROOSTING IN A STRUCTURE IN THE PROJECT SITE DURING THE DAYTIME BUT ARE NOT PART OF AN ACTIVE MATERNITY COLONY, THEN EXCLUSION MEASURES MUST INCLUDE ONE-WAY VALVES THAT ALLOW BATS TO GET-OUT BUT ARE DESIGNED SO THAT BATS MAY NOT RE-ENTER THE STRUCTURE BIO-6: ALL WORK WITHIN 100 FEET OF TANK FARM CREEK, INCLUDING WORK WITHIN THE CREEK SETBACK, SHALL OCCUR OUTSIDE THE RAINY SEASON (APRIL 15 TO OCTOBER 15, UNLESS APPROVED OTHERWISE BY THE RWQCB), DURING PERIODS WHEN THE CREEK CHANNEL IS DRY AND WATER FLOWS ARE ABSENT. CR-2A: DATA RECOVERY THROUGH CONTROLLED GRADING OF CA-SLO-2798/H SHALL OCCUR PRIOR TO THE START OF CONSTRUCTION TO SEEK BURIED FEATURES AND ADDITIONAL DIAGNOSTIC ARTIFACTS. THE APPLICANT SHALL RETAIN A REGISTERED PROFESSIONAL ARCHAEOLOGIST FAMILIAR WITH THE TYPES OF HISTORIC AND PREHISTORIC RESOURCES THAT COULD BE ENCOUNTERED WITHIN THE PROJECT SITE AND A NATIVE AMERICAN MONITOR TO SUPERVISE THE CONTROLLED GRADING, WHICH SHALL OCCUR IN 10-CENTIMETER LIFTS TO CULTURALLY STERILE SEDIMENTS OR MAXIMUM CONSTRUCTION DEPTH (WHICHEVER IS REACHED FIRST). ·ANY FORMED TOOLS EXPOSED DURING GRADING SHALL BE COLLECTED. IF ARCHAEOLOGICAL FEATURES ARE EXPOSED (INCLUDING BUT NOT LIMITED TO HEARTHS, STORAGE PITS, MIDDEN DEPOSITS, OR STRUCTURAL REMAINS), THE ARCHAEOLOGIST SHALL TEMPORARILY REDIRECT GRADING TO ANOTHER AREA SO THE FEATURES CAN BE EXPOSED, RECORDED, AND SAMPLED ACCORDING TO STANDARD ARCHAEOLOGICAL PROCEDURES. ORGANIC REMAINS SHALL BE DATED USING THE RADIOCARBON METHOD AND THE GEOCHEMICAL SOURCE AND HYDRATION RIM THICKNESS OF ANY OBSIDIAN SHALL BE DETERMINED. TECHNICAL ANALYSES OF PLANT REMAINS, BONE AND SHELL DIETARY DEBRIS, AND OTHER IMPORTANT MATERIALS SHALL ALSO BE PERFORMED. ·ARTIFACTS, FEATURES, AND OTHER MATERIALS RECOVERED THROUGH THIS PROCESS SHALL BE DESCRIBED, ILLUSTRATED, AND ANALYZED FULLY IN A TECHNICAL REPORT OF FINDINGS; THE ANALYSIS SHALL INCLUDE COMPARATIVE RESEARCH WITH OTHER SITES OF SIMILAR AGE. IN ADDITION TO THE TECHNICAL REPORT, THE FINDINGS FROM THIS RESEARCH SHALL BE PUBLISHED IN AN APPROPRIATE SCIENTIFIC JOURNAL. THE APPLICANT SHALL FUND ALL TECHNICAL REPORTING AND SUBSEQUENT PUBLICATION. CR-2B: FOLLOWING COMPLETION OF CONTROLLED GRADING OF CA-SLO-2798 /H, THE APPLICANT SHALL RETAIN A REGISTERED PROFESSIONAL ARCHAEOLOGIST AND A NATIVE AMERICAN CONSULTANT TO MONITOR ALL FURTHER EARTH DISTURBANCES WITHIN PHASE 5 TO ENSURE THAT PREVIOUSLY UNIDENTIFIED BURIED ARCHAEOLOGICAL DEPOSITS ARE NOT INADVERTENTLY EXPOSED AND DAMAGED. IN THE EVENT ARCHAEOLOGICAL REMAINS ARE ENCOUNTERED DURING GRADING OR OTHER EARTH DISTURBANCE, WORK IN THE VICINITY SHALL BE STOPPED IMMEDIATELY AND REDIRECTED TO ANOTHER LOCATION UNTIL THE PROJECT ARCHAEOLOGIST EVALUATES THE SIGNIFICANCE OF THE FIND PURSUANT TO CITY ARCHAEOLOGICAL RESOURCE PRESERVATION PROGRAM GUIDELINES. IF REMAINS ARE FOUND TO BE SIGNIFICANT, THEY SHALL BE SUBJECT TO A PHASE 3 MITIGATION PROGRAM CONSISTENT WITH CITY GUIDELINES AND FUNDED BY THE APPLICANT. CR-3A: PRIOR TO THE ISSUANCE OF BUILDING AND GRADING PERMITS FOR PHASE 1, THE APPLICANT SHALL RETAIN A CITY-APPROVED REGISTERED PROFESSIONAL ARCHAEOLOGIST AND A NATIVE AMERICAN MONITOR TO BE PRESENT DURING ALL GROUND DISTURBING ACTIVITIES WITHIN THE PROJECT SITE AND BUCKLEY ROAD EXTENSION SITE. IN THE EVENT OF ANY INADVERTENT DISCOVERY OF PREHISTORIC OR HISTORIC-PERIOD ARCHAEOLOGICAL RESOURCES DURING CONSTRUCTION, ALL WORK WITHIN 50 FEET OF THE DISCOVERY SHALL IMMEDIATELY CEASE (OR GREATER OR LESSER DISTANCE AS NEEDED TO PROTECT THE DISCOVERY AND DETERMINED IN THE FIELD BY THE PROJECT ARCHAEOLOGIST). THE APPLICANT SHALL IMMEDIATELY NOTIFY THE CITY OF SAN LUIS OBISPO COMMUNITY DEVELOPMENT DEPARTMENT. THE PROJECT ARCHAEOLOGIST SHALL EVALUATE THE SIGNIFICANCE OF THE DISCOVERY PURSUANT TO CITY ARCHAEOLOGICAL RESOURCE PRESERVATION PROGRAM GUIDELINES PRIOR TO RESUMING ANY ACTIVITIES THAT COULD IMPACT THE SITE/DISCOVERY. IF THE PROJECT ARCHAEOLOGIST DETERMINES THAT THE FIND MAY QUALIFY FOR LISTING IN THE CRHR, THE SITE SHALL BE AVOIDED OR SHALL BE SUBJECT TO A PHASE 3 MITIGATION PROGRAM CONSISTENT WITH CITY GUIDELINES AND FUNDED BY THE APPLICANT. WORK SHALL NOT RESUME UNTIL AUTHORIZATION IS RECEIVED FROM THE CITY. CR-3B: PRIOR TO CONSTRUCTION, WORKERS SHALL RECEIVE EDUCATION REGARDING THE RECOGNITION OF POSSIBLE BURIED CULTURAL REMAINS AND PROTECTION OF ALL CULTURAL RESOURCES, INCLUDING PREHISTORIC AND HISTORIC RESOURCES, DURING CONSTRUCTION. SUCH TRAINING SHALL PROVIDE CONSTRUCTION PERSONNEL WITH DIRECTION REGARDING THE PROCEDURES TO BE FOLLOWED IN THE UNLIKELY EVENT THAT PREVIOUSLY UNIDENTIFIED ARCHAEOLOGICAL MATERIALS, INCLUDING NATIVE AMERICAN BURIALS, ARE DISCOVERED DURING CONSTRUCTION. TRAINING WOULD ALSO INFORM CONSTRUCTION PERSONNEL THAT EXCLUSION ZONES MUST BE AVOIDED AND THAT UNAUTHORIZED COLLECTION OR DISTURBANCE OF ARTIFACTS OR OTHER CULTURAL MATERIALS IS NOT ALLOWED. THE TRAINING SHALL BE PREPARED BY THE PROJECT ARCHAEOLOGIST AND SHALL PROVIDE A DESCRIPTION OF THE CULTURAL RESOURCES THAT MAY BE ENCOUNTERED IN THE PROJECT SITE, OUTLINE STEPS TO FOLLOW IN THE EVENT THAT A DISCOVERY IS MADE, AND PROVIDE CONTACT INFORMATION FOR THE PROJECT ARCHAEOLOGIST, NATIVE AMERICAN MONITOR, AND APPROPRIATE CITY PERSONNEL. THE TRAINING SHALL BE CONDUCTED CONCURRENT WITH OTHER ENVIRONMENTAL OR SAFETY AWARENESS AND EDUCATION PROGRAMS FOR THE PROJECT, PROVIDED THAT THE PROGRAM ELEMENTS PERTAINING TO ARCHAEOLOGICAL RESOURCES IS PROVIDED BY A QUALIFIED INSTRUCTOR MEETING APPLICABLE PROFESSIONAL QUALIFICATIONS STANDARDS. 12/21/2022 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Le g e n d S h e e t 5 FILE NAME: 1493-0007-ECPN-TITL.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R PHASE BOUNDARY APPROXIMA T E SPACING EROSION CONTROL LEGEND FIBER ROLL IN ACCORDANCE WITH CALTRANS BMP SC-5 (SHEET 22) AND STANDARD DETAIL T56 (SHEET 21) DRAIN INLET PROTECTION IN ACCORDANCE WITH CALTRANS BMP SC-10 (SHEET 22) AND STANDARD DETAIL T61, T62, T63 (SHEETS 21). DRAINAGE SWALE IN ACCORDANCE WITH CALTRANS BMP SS-9 (SHEET 22). 1.HYDROSEED ALL DISTURBED SURFACES WITH APPROPRIATE SEED MIXTURES RECOMMENDED ON SHEET L-6.2 OF THE LANDSCAPE IMPROVEMENT PLANS FOR AVILA RANCH PHASES 2 & 3 AND IN ACCORDANCE WITH CALTRANS BMP SS-3 AND SS-4 (SHEET 22). TEMPORARY IRRIGATION MAY BE NECESSARY TO ESTABLISH VEGETATION. 2.IF VEGETATION IS NOT ESTABLISHED PRIOR TO A PREDICTED RAIN EVENT (MORE THAN 30% CHANCE OF PRECIPITATION FORECAST), THEN USE DRY SEED, STRAW COVER AND JUTE NETTING. GRAVEL BAG CHECK DAM IN ACCORDANCE WITH CALTRANS BMP SC-4 (SHEET 22) AND STANDARD DETAIL T57 - TYPE 2, (SHEET 21). PROVIDE STABILIZED CONSTRUCTION ENTRANCE/EXIT - IMPLEMENT CALTRANS BMP TC-1 (SHEET 23) AND STANDARD DETAIL T58 (SHEET 21). WATERSHED / DRAINAGE AREA BOUNDARY SLOPE FOR STABLIZATION - PROTECT CUT OR FILL SLOPES AS FOLLOWS: 1.VEGETATE THE SLOPE BY EITHER: a.HYDROSEED AND PROVIDE TEMP. IRRIGATION; OR b.BROADCAST DRY SEED AND COVER WITH WEED FREE STRAW, TRACKED INTO THE SOIL (TRACKED CONSTRUCTION EQUIPMENT). 2.PLACE JUTE NETTING, ANCHORED WITH STAPLES AT INTERVALS RECOMMENDED BY THE MANUFACTURER, ON ALL GRADED SLOPES THAT DO NOT HAVE ESTABLISHED VEGETATION PRIOR TO PREDICTED RAIN EVENT. 3.SLOPES TO BE ROUGHENED BY TRACKED CONSTRUCTION EQUIPMENT IN ACCORDANCE WITH CASQA BMP EC-15 (SHEET 22). PROVIDE TENSAR C350 EROSION CONTROL MAT INSTALLED PER MANUFACTURER RECOMMENDATIONS OR APPROVED EQUAL FOR STABLIZATION OF OVERFLOW PATH - IMPLEMENT CALTRANS BMPS SS-7 (SHEET 22), STANDARD DETAIL T54 AND T57-TYPE 2 (SHEET 21). INSTALL HYDROSEED PRIOR TO GEOTEXTILE. DRAINAGE SWALE WITH EARTHEN DIKE IN ACCORDANCE WITH CALTRANS BMP SS-9 (SHT 22). LIMITS OF AREA OF DISTURBANCE/ GRADING OUTLET PROTECTION/ VELOCITY DISSAPATION DEVICE IN ACCORDANCE WITH CALTRANS BMP SS-10 (SHEET 22). SEDIMENT TRAP WITH OUTLET PROTECTION IN ACCORDANCE WITH CALTRANS BMP SC-3 (SHEET 22). PRESERVATION OF EXISTING VEGETATION IN ACCORDANCE WITH CALTRANS BMP SS-2 AND STANARD DETAIL T65 (SHEET 21). CONSTRUCTION STAGING AREA CONST. STAGING AREA GRAVEL BAG BERMS IN ACCORDANCE WITH CALTRANS BMP SC-6 (SHEET 22) AND STANDARD DETAIL T62 (SHEET 21). TEMPORARY EARTHEN SWALES FOR MASS-GRADED ROAD CROSSING CONNECTIONS OF ROADSIDE SWALES AND SEDIMENT TRAP FACILITIES (SEE DETAIL A, SHEET 22). ST-## ABBREVIATIONS AB AGGREGATE BASE ABN ABANDON AC ASPHALTIC CONCRETE ACP ASBESTOS CEMENT PIPE AISC AMERICAN INSTITUTE OF STEEL CONSTRUCTION ARV AIR RELEASE VALVE A&V AIR AND VACUUM (COMBINATION) VALVE AVG AVERAGE BC BEGIN CURVE BF BLIND FLANGE BFV BUTTERFLY VALVE BLDG BUILDING BM BENCH MARK BO BLOW OFF BV BALL VALVE BW BOTTOM OF WALL C CURB CAV COMBINATION AIR VALVE CATV CABLE TELEVISION C-D-S CUL-DE-SAC CL CENTERLINE CL CLASS CMP CORRUGATED METAL PIPE CO CLEANOUT CONC CONCRETE CONST CONSTRUCTION CONT CONTINUOUS CPLG COUPLING CY CUBIC YARD DCI CURB INLET DET DETAIL DIA DIAMETER DIM DIMENSION DMH STORM DRAIN MANHOLE D/W DRIVEWAY E EXISTING EA EACH EC END CURVE EFF EFFLUENT MAIN ELE ELEVATION EP EDGE OF PAVEMENT ETW EDGE OF TRAVELED WAY EX EXISTING EG EXISTING GRADE AT CENTERLINE FCA FLANGE COUPLING ADAPTOR FDC FIRE DEPARTMENT CONNECTION FF FINISH FLOOR FG FINISH GRADE FH FIRE HYDRANT FL FLOW LINE FL FIRE LINE FLG FLANGE FS FINISH SURFACE FT FEET G GAS GA GAGE GAL GALLON GALV GALVANIZED GB GRADE BREAK GPD GALLONS PER DAY GPM GALLONS PER MINUTE GV GATE VALVE HDPE HIGH DENSITY POLYETHYLENE HGL HYDRAULIC GRADE LINE HP LOW LINE HIGH POINT ID INSIDE DIAMETER IN INCHES INTX INTERSECTION INV INVERT IRR IRRIGATION MAIN JP JOINT POLE JT JOINT UTILITY TRENCH L LENGTH LAT LATERAL LF LINEAR FEET LP FLOW LINE LOW POINT LT LEFT M METER MAX MAXIMUM MIN MINIMUM MISC MISCELLANEOUS MH MANHOLE N/A NOT APPLICABLE NGVD NATIONAL GEODETIC VERTICAL DATUM NIC NOT IN CONTRACT NTS NOT TO SCALE OD OUTSIDE DIAMETER PCC PORTLAND CEMENT CONCRETE PH POTHOLE PIV POST INDICATOR VALVE PL PROPERTY LINE POC POINT OF CONNECTION PRV PRESSURE REGULATING VALVE PSF POUND PER SQURE FOOT PSI POUND PER SQUARE INCH PVC POLYVINYL CHLORIDE R RADIUS RC REINFORCED CONCRETE RCP REINFORCED CONCRETE PIPE REQD REQUIRED RSP ROCK SLOPE PROTECTION RT RIGHT R/W RIGHT OF WAY RET WALL RETAINING WALL SS SANITARY SEWER SCH SCHEDULE SD STORM DRAIN SHT SHEET SMH SANITARY SEWER MANHOLE SPEC SPECIFICATIONS SSFM SANITARY SEWER FORCE MAIN STA STATION STD STANDARD STL STEEL SW SIDEWALK T TELEPHONE TB THRUST BLOCK TOB TOP OF BANK TC TOP OF CURB TF TOP OF FOOTING TG TOP OF GRATE TL TOP OF LINER TP TOP OF PAVEMENT TYP TYPICAL TW TOP WALL UTL COMMON TRENCH UTILITIES VAR VARIES VC VERTICAL CURVE VIC VICTAULIC COUPLING VERT VERTICAL W WATER WF WIDE FLANGE WL WATER LINE WM WATER METER WS WATER SERVICE WV WATER VALVE WWM WELDED WIRE MESH WW WET WELL THIS IS A STANDARD SET OF ABBREVIATIONS. NOT ALL ABBREVIATIONS SHOWN WILL APPLY TO THIS WORK. SAND BAG BERMS IN ACCORDANCE WITH CALTRANS BMP SC-8 (SHEET 22) AND STANDARD DETAIL T62 (SHEET 21). LEGEND: EXISTING PROPOSED DESCRIPTION COCO %2.00%(2.00) 8 8 l l SPOT ELEVATIONS SEWER MANHOLE SEWER CLEANOUT SERVICE LATERAL (W=WATER, G=GAS, U=UTILITIES) SERVICE METER (W=WATER) DOUBLE SERVICE METER (W=WATER) SEWER LATERAL FIRE HYDRANT STORM DRAIN MANHOLE STORM DRAIN CATCH BASIN GATE VALVE STREET LIGHT SURVEY MONUMENT BENCH MARK SLOPE PERCENTAGE ABANDON UTILITY EDGE OF PAVEMENT REDUCER / INCREASER WATER LINE SEWER FORCE MAIN GRAVITY SEWER LINE STORM DRAIN FUTURE STORM DRAIN UNDERGROUND GAS LINE UNDERGROUND UTILITY LINE LOCATION UNDERGROUND ELECTRICAL LINE UNDERGROUND CABLE TELEVISION LINE UNDERGROUND TELEPHONE LINE RIGHT OF WAY EASEMENT CENTERLINE BARBED WIRE FENCE CHAIN LINK FENCE RETAINING WALL FLOWLINE PROPERTY LINE LIMITS OF GRADING CUT/FILL WETLAND LIMIT LIMIT OF EXISTING 100 YEAR FLOOD PLAIN LIMIT OF POST CONSTRUCTION 100 YEAR FLOOD PLAIN. 12/21/2022 6' ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Gr a d i n g P l a n I n d e x 6 FILE NAME: 1493-0007-ECPN-INDX.DWG N 00 (IN FEET) GRAPHIC SCALE 150 30075 1 IN = 150 FT RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R EARTHWOOD LANE TANGO WAY BRAVO STREET VENTURE DRIVE BUCKLEY ROAD VA C H E L L L A N E EA R T H W O O D L A N E Sheet 8 Sheet 9 Sheet 10 Sheet 11 Sheet 12 Sheet 13 Sheet 16Sheet 15Sheet 14 Sheet 17 Sheet 18 Sheet 19 Sheet 20 12/21/2022 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ENG2 SHEETS Pa d G r a d i n g D e t a i l s 7 FILE NAME: 1493-0007-ECPN-TITL.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R Driveway 10.00' Building Setback 14.00' Edge of Pad 13.00' Scale: NONE TYPICAL MEDIUM DENSITY RESIDENTIAL LOT GRADING PLAN VIEW (TYP.)A FLTC/ T o e Toe HP Top Hing e P t T o e HP Top FLTC/ T o e Hin g e P t CL TC TC CL ℄ S L O P E 2.0%1.5% 0.0% To e HPTop Hin g e P t To e / B W Hi n g e P t To e / B W Scale: NONE TYPICAL LOW DENSITY RESIDENTIAL LOT GRADING PLAN VIEW (TYP.)B Toe HPTo p 1.5% SLOPE STABILIZATION: PROTECT CUT OR FILL SLOPES PER INSTRUCTIONS AND SPECIFICATIONS ON SHEETS 3 AND 5. Building Setback 4.00' 47 . 0 0 ' 55 . 0 0 ' 47.00' 65.00' 1.00' 4.00' 18.00' Porch Setback 10.00' Garage Setback 20.00'Setback 5.00' Building Setback 15.00' 40 . 0 0 ' 50 . 0 0 ' 85.00' 85.00' 95.00' 1.00' Building Setback 15.00' 6.00'5.00' 4.00' Min. Setback 1.00' 5.00' Min. Setback 5.00' Min. Setback 1.00' 1.00' ⅊ ⅊ & ℄ TYPICAL DRIVEWAY 2: 1 MA X ⅊ ⅊ ℄ S L O P E ℄ S L O P E 2: 1 MA X ⅊ TYPICAL STREET ℄ 2: 1 MA X VARIES ⅊ ⅊⅊TYPICAL STREET ℄ SLOPE STABILIZATION: PROTECT CUT OR FILL SLOPES PER INSTRUCTIONS AND SPECIFICATIONS ON SHEETS 3 AND 5. 12/21/2022 243 244 246 245 248 247 276 275 274 290 291 292 293 297 296 295 294 298 299 300 301 302 303 326 327 186 187 115 111 112 113 114 110 111 112 113 114 11 5 116 1 1 7 1 1 811 8 ST-01 CONSTRUCTION PARKING/ STAGING/ STOCKPILE AREA SS CONC. WASH 11 5 11 6 1 1 5 1 1 3 1 1 3 1 1 4 1 1 6 112 1 1 3 1 1 4 114 114 11 0 11 5 115 11 5 120 12 0 1 2 5125 12 5 125 115 116 117 1 1 6 117 115 1 1 3 113 114 116 111112113114 115 112 112 113 113114 114 11 6 11 1 11 2 115 11 4 11 4 11 2 1 1 3 11 5 11511 3 113 11411 4 11 5 11 5 116 116 1 1 7 118 11 8 11 5 11 6 11 7 11 5 1 1 4 1 1 5 1 1 4 11 6 11 7 11 7 11 7 11 5 11 5 11 6 11 7 11 8 11 5 1 1 5 1 1 4 11 4 110 111 112 ST-29 ST-30 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 8 FILE NAME: 1493-0007-ECPN.DWG N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R MEMPHIS BELLE WAY KITTY HAWK COURT KITTY HAWK COURTKITTY HAWK COURT PI P E R L A N E EA R T H W O O D L A N E CONSTRUCTION ENTRANCE MA T C H L I N E SE E S H E E T 9 MATCHLINE SEE SHEET 11 EXISTING WATER WELL TO REMAIN AND BE PROTECTED IN PLACE USING TEMPORARY HIGH-VISIBILITY CONSTRUCTION FENCING AND PERIMETER SAND BAG BERM. TEMPORARY SEDIMENT TRAP OVERFLOW SWALE (SEE DETAIL A, SHEET 21.) GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. PROPOSED CONCRETE-LINED BOUNDARY SWALE (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). PROPOSED CONCRETE-LINED BOUNDARY SWALE (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). PROPOSED CONCRETE-LINED BOUNDARY SWALE (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). PROPOSED CONCRETE-LINED BOUNDARY SWALE (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). LIMIT OF EXISTING 100 YEAR FLOOD PLAIN CONSTRUCTION ENTRANCE EXISTING CONCRETE SPILLWAY 12/21/2022 273 277 278 279 282 281 280 283 284 285 287 286 288 289 307 306 305 304 308 309 310 311 321 320 319 318 322 323 324 325 314 313 312 315 316 317 192 200 328 1 1 5 11 1 111 1 1 1 11 1 11 1 11111 1 1 1 2 1 1 2 1 1 2 1 1 3 1 1 4 1 1 1 111 1 1 1 1 1 1 11 2 11 3 117 117 118 118119119 1 1 5 11 6 1 1 5 1 1 6 1 1 7 115 120 116 117 118 119 1 2 1 11 5 11 6 115 114 116 117 1 2 0 1 1 7 1 1 8 1 1 9 11 5 11 2 11 2 1 1 3 11 3 11 4 1 1 4 11 4 1 1 5 ST-10 ST-11 ST-08 ST-09 SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD 11 7117 1 1 7 116 11 7 1 1 7 11 7 116 117 1 1 8 11 9 11 7 11 8 1 1 8 118 1 1 8 11 8 1 1 7 117 11 6 11 6 116 1 1 9 1 1 8 1 2 0 118 11 9 1 2 1 1 1 5 11 6 1 1 7 11 5 1 1 4 11 6 11 5 11 6 11 7 11 8 11 7 1 1 5 1 1 3 1 1 4 1 1 6 1 1 7 11 5 11 3 11 4 11 6 11 7 11 8 115 111 111 112 112 113 113114 114 11611711 1 11 1 11 2 11 3 11 1 11 2 115 11 7 11 7 11 8 11 8 11 8 11 7 11 8 11 8 11 8 11 8 11 8 11 9 11 9 11 9 11 9 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 9 FILE NAME: 1493-0007-ECPN.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R MEMPHIS BELLE WAY JE S P E R S E N R O A D VENTURE DRIVE PROPOSED CONSTRUCTION ENTRANCE (TO BE USED WHEN CONSTRUCTION TRAVEL IS ACTIVE OR PLANNED IN THIS AREA) MA T C H L I N E SE E S H E E T 10 MA T C H L I N E SE E S H E E T 8 MATCHLINE SEE SHEET 12 TEMPORARY SEDIMENT TRAP OVERFLOW SWALE (SEE DETAIL A, SHEET 21.) GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. TEMPORARY OVERFLOW SWALE (SEE DETAIL A, SHEET 21.) PROPOSED CONCRETE-LINED BOUNDARY SWALE (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). PROPOSED NORTH BOUNDARY BYPASS CULVERTS AND STORM DRAIN (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). PROPOSED NORTH BOUNDARY BYPASS CULVERTS AND STORM DRAIN (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). PROPOSED VENTURE DRIVE CULVERT CROSSING (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE EXISTING 100 YEAR FLOOD PLAIN WETLAND LIMIT SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICES POST CONSTRUCTION 100-YR FLOOD LIMIT 12/21/2022 201 115 120 125 116117118119 121122123124126127128129 115 120 125 114 116117118119 121122123124 126127128129 115 120 114 116 117 118 119 121 122 115 115 115 115 113 113 11 4114 114 114 114 1 1 4 116 116 117 117 118 1 1 5 1 2 0 11 4 116 117 118 11 9 121 1 1 5 11 6 11 7 11 8 ST-13 ST-12 SD SD 12 0 121 12112 1 12 2 122 12 2 121 122 123 12 3 12 4 11 6 116 11 6 116 12 3 116 116 117 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 10 FILE NAME: 1493-0007-ECPN.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R VENTURE DRIVE MA T C H L I N E SE E S H E E T 9 MATCHLINE SEE SHEET 13 GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. PROPOSED STORM DRAIN NETWORK (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICES N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE LIMIT OF EXISTING 100 YEAR FLOOD PLAIN 12/21/2022 232 231 228 227 226229230233 205 206 209 208 207 212 211 210 215 214 213 218 217 216 221 220 219 222 223 225 224 234 239 238235 240 241 242 237236 249 250 251 254 253 252 257 256 255 260 259 258 261 262 263 266 265 264 267 268 269 270 271 272 2-30 11 2 1 1 2 1 1 2 11 3 113 113 1 1 3 114 11 4 1 1 0 10 9 10 9 1 1 1 110 109 111 11 2 110 1 0 7 107 108109 111 11 1 11 1 11 0 10 9 1 0 9 11 1 1 1 2 11 2 113 1121 1 3 113 1 1 3 1 1 3 1 1 3 11 0 10 7 108 10 9 1 1 1 10 8 10 8 1 0 9 11 3 11 0 10 8 10 9 11 1 11 2 11 3 1 1 3 ST-06 ST-05ST-04 ST-03ST-02 ST-07 112 11 3 112 11 2 112 112 1 1 2 11 2 1 1 2 1 1 3 113113 113113 1 1 4 11 3 11 5 11 3 11 4 11 6 11 0 110 111112113114 110 111 112 105 105 11 0 110 111112 113114 111 11 2 11 3 11 4 10 6 107 11 5 11 6 11 7 117 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 11 FILE NAME: 1493-0007-ECPN.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R EA R T H W O O D L A N E VENTURE DRIVE FOXTROT COURT PI P E R L A N E BRAVO COURT EAR T H W O O D L A N E PROPOSED CONSTRUCTION ENTRANCE (TO BE USED WHEN CONSTRUCTION TRAVEL IS ACTIVE OR PLANNED IN THIS AREA) MATCHLINE SEE SHEET 8 MA T C H L I N E SE E S H E E T 12 MATCHLINE SEE SHEET 14 TEMPORARY SEDIMENT TRAP OVERFLOW SWALE (SEE DETAIL A, SHEET 21.) GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICES PROPOSED CONCRETE-LINED BOUNDARY SWALE (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). BASIN H-2 BOTTOM ELEVATION: 110.00 SPILLWAY ELEVATION: 111.60 N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE LIMIT OF EXISTING 100 YEAR FLOOD PLAIN WETLAND LIMIT Avila Ranch - Tract 3089 - Phase 1 (Not a Part) POST CONSTRUCTION 100-YEAR FLOOD LIMIT POST CONSTRUCTION 100-YEAR FLOOD LIMIT 12/21/2022 5-655-825-87 5-86 5-83 5-64 5-635-845-85 5-62 5-61 5-60 5-59 5-58 5-57 5-56 5-100 5-101 272 273 193 329 202 203 204 1 2 2 11 5 1 2 0 1 2 0 11 3 11 4 114 1 1 4 11 6 1 1 7 1 1 8 11 9 1 2 1 121 1 2 1 1 2 1 1 2 1 1 2 1 115 120 114 11611 6 116 117 118 119 12 1 11 5 1 2 0 113 114 116 117 118 1 1 9 113 11 4 ST-20 ST-18 ST-17 ST-19 ST-16 ST-15 ST-14 ST-11 SD SD SD SD 1 1 5 1 1 6 1 2 0 11 2 115 12 0 1 2 0 11 6 11 7 118 11 9 119 11 9 118119 115 11 3 1 1 4 116 118 110 119 119 1 1 9 1 1 8 119 1 1 7 11 7 11 7 118 11 9 11 8 11 8 117 11 8 110 11 5 11 7 11 8 117 118 1 1 6 1 1 7 1 1 8 11 9 115 115 11 6 1 1 7 11 7 11 7 11 8 115 116 117 118 119 11 8 11 9 1 1 5 1 1 3 1 1 4 1 1 6 11 0 110 110 11 1 112 11 1 11 2 110 109 111 112 108 10 9 115 113 114 116 117 118 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 12 FILE NAME: 1493-0007-ECPN.DWG N3060 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R J E S P E R S E N R O A D WRIGHT BROTHERS WAY YE A G E R C O U R T EA R H A R T W A Y VE N T U R E D R I V E MATCHLINE SEE SHEET 9 MA T C H L I N E SE E S H E E T 13 MA T C H L I N E SE E S H E E T 11 MATCHLINE SEE SHEET 15 TEMPORARY SEDIMENT TRAP OVERFLOW SWALE (SEE DETAIL A, SHEET 21.) TEMPORARY SEDIMENT TRAP OVERFLOW SWALE (SEE DETAIL A, SHEET 21.) TEMPORARY SEDIMENT TRAP OVERFLOW SWALE (SEE DETAIL A, SHEET 21.) TEMPORARY OVERFLOW SWALE (SEE DETAIL A, SHEET 21.) TEMPORARY SEDIMENT TRAP OVERFLOW SWALE (SEE DETAIL A, SHEET 21.) GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. BASIN H-1 BOTTOM ELEVATION: 112.00 SPILLWAY ELEVATION: 113.60 BASIN H-2 BOTTOM ELEVATION: 110.00 SPILLWAY ELEVATION: 111.60 PROPOSED JESPERSEN ROAD CULVERT CROSSING (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). EXISTING 100 YEAR FLOOD PLAIN LIMIT OF EXISTING 100 YEAR FLOOD PLAIN WETLAND LIMIT SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICES SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICES SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICES SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICES POST CONSTRUCTION 100-YEAR FLOOD LIMIT 12/21/2022 197 194 195 196 199 124 12 3 121 122 1 1 5 120 11 4 1 1 6 11 7 11 8 119 12 1 122 123 115 120 11 4 114 11 411 4 1141 1 411 4 114 114 11 411 4 1 1 4 116 117 118 119 121 121 125 125 1 2 3 12 4 126 12 6 12 6 126 127127 127 127 127 127 12 5 1 2 5 12 2 12 3 12 4 12 0 12 1 12 2 12 3 12 4 120 121 122 12 4 120 12 5 12 1 12 2 12 3 12 4 12 5 12 3 12 4 12 6 12 7 12 8 12 9 119 115 120 114 116 117 118 119 121 125 1 2 5 1 2 6 1 2 0 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 13 FILE NAME: 1493-0007-ECPN.DWG N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R WRIGHT BROTHERS WAY LA N G L E Y S T R E E T MATCHLINE SEE SHEET 10 MA T C H L I N E SE E S H E E T 12 MATCHLINE SEE SHEET 16 GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. DRAINAGE SWALE WITH EARTHEN DIKE IN ACCORDANCE WITH CALTRANS BMP SS-9 SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICESLIMIT OF EXISTING 100 YEAR FLOOD PLAIN 12/21/2022 5-51 5-52 5-53 5-54 5-55 5-25 5-26 5-27 5-50 5-49 5-48 5-47 5-46 5-28 5-29 5-30 5-45 5-44 5-31 5-32 5-43 5-42 5-33 5-34 5-41 5-40 5-35 5-36 5-39 5-103 5-104 115 10 7 108 10 9 1 1 1 10 8 11 0 1 0 9 1 0 9 1 1 1 1 1 1 11 0 11 5 12 0 12 5 10 7 108 109 11 1 11 2 11 3 11 4 11 6 11 7 11 8 11 9 12 1 12 2 12 3 12 4 1 2 6 1 2 7 12 8 1291 0 2 10 3 115 111 112 113 114 11 0 10 8 10 8 10 9 10 9 115 120 111 112 113 114 116 117 118 11 9 1 2 1 115 120 111 112 11 3 114 116 1 1 7 1 1 8 119 121 110 111 112 ST-22 ST-23 ST-24 ST-25 11 5 12 011 6 11 7 11 8 11 9 11 5 1 1 4 11 6 11 7 11 8 11 9 11 3 1 1 3 11 4 114 12 0 11 7 11 8 11 9 12 1 12 1 115 110 110 107 116 116 117 115 116 11 7 110 106107108109 110 111112113 110 105 105 105 104 10 5 11 0 11 0 105 105 11 0 111112 113114 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 14 FILE NAME: 1493-0007-ECPN.DWG N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R DOOLITTLE DRIVE CO L E M A N L A N E HUGHES LANE EA R T H W O O D L A N E MATCHLINE SEE SHEET 11 MA T C H L I N E SE E S H E E T 15 MATCHLINE SEE SHEET 18 TEMPORARY SEDIMENT TRAP OVERFLOW SWALE (SEE DETAIL A, SHEET 21.) GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICES BASIN J BOTTOM ELEVATION: 105.40 SPILLWAY ELEVATION: 107.00 TEMPORARY SEDIMENT TRAP OVERFLOW SWALE (SEE DETAIL A, SHEET 21.) LIMIT OF EXISTING 100 YEAR FLOOD PLAIN WETLAND LIMIT Avila Ranch - Tract 3089 - Phase 1 (Not a Part) POST CONSTRUCTION 100-YEAR FLOOD LIMIT POST CONSTRUCTION 100-YEAR FLOOD LIMIT 12/21/2022 5-16 5-17 5-18 5-19 5-20 5-21 5-22 5-23 5-24 5-36 5-39 5-38 5-37 5-95 5-94 5-93 5-76 5-75 5-74 5-73 5-72 5-71 5-705-775-92 5-91 5-78 5-69 5-685-795-90 5-89 5-80 5-67 5-88 5-81 5-66 5-655-825-87 5-96 5-97 5-98 5-99 5-100 5-102 122 1 2 2 120 120 125 125 116 116 116 116 117 117 118 118 119 119 121 12 1 121 121 122 122 123 123 124 12 4 124 1 2 0 1 2 1 115 116 117 118 119 1 1 5 1 2 0 11 2 1 1 3 1 1 4 1 1 6 117 11 8 11 9 12 1 1 2 2 116 120 ST-21 ST-27 ST-26 ST-28 120 1 1 8 119121121 117 118 119 1 2 0 1 1 6 1 1 7 1 1 8 1 1 9 1 2 1 12 1 120 1 2 1 12 1 12 2 121 120 12 1 120 119 120 11 9 1 2 1 1 2 2 120 121121 120 121 121 120 119 1 2 0 1 1 8 1 1 9 1 2 1 120 11 9 11 6 11 7 12 0 11 8 11 9 12 0 1 2 0 11 9 12 1 1 2 1 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 15 FILE NAME: 1493-0007-ECPN.DWG N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R HUGHES LANE EA R H A R T W A Y JE S P E R S E N R O A D MATCHLINE SEE SHEET 12 MA T C H L I N E SE E S H E E T 16 MATCHLINE SEE SHEET 19 MA T C H L I N E SE E S H E E T 14 GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. WETLAND AREA AS IDENTIFIED IN THE AVILA RANCH EIR. NO LAND DISTRUBING ACTIVITIES SHALL OCCUR WITHIN WETLAND LIMIT OF EXISTING 100 YEAR FLOOD PLAIN 12/21/2022 198 122 1 2 2 1 2 2 122 1 2 2 12 3 124 1 2 4 124 1 2 4 1 2 0 11 9 1 2 1 1 2 2 12 3 120120 12 0 12 0120 12 5 12 5 125 13 0 1 3 0 116 1 1 7 117 11 7 118 119 12 1 122123 12 4 1 2 4 124 126 1 2 6 1 2 6 127 1 2 7 1 2 7 12 8 12 8 12 9 1 2 9 13 113113113 1 1 3 1 13 1 1 3 2 1 3 2 1 3 3 1 3 3 1 3 4 1 3 4 115 1 2 0 120 116 117 118 1 1 9 11911911911 9 120 125 130 116 11 7 118 119 121122 12 3 123 123124 124 124 1 2 4 124 126 12 7 127 127 12 8 129 131 TEMPORARY STOCKPILE AREA 117 118 116 117 118 12 0 12 1 12 2 12 3 11 8 11 9 116 117 118 119 123 12 3 1 2 4 124 120120 121 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 16 FILE NAME: 1493-0007-ECPN.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R MATCHLINE SEE SHEET 13 MA T C H L I N E SE E S H E E T 15 MATCHLINE SEE SHEET 20 GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. DRAINAGE SWALE WITH EARTHEN DIKE IN ACCORDANCE WITH CALTRANS BMP SS-9 N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICES WETLAND AREA AS IDENTIFIED IN THE AVILA RANCH EIR. NO LAND DISTRUBING ACTIVITIES SHALL OCCUR WITHIN WETLAND 12/21/2022 1 0 2 1 0 3 10 0 105 9 8 99 1 0 1 1 0 2 1 0 3 10 3 10 3 104 100 101 102 10 2 103 10 3 104 10 4 100 9 696 9 7 97 97 9 7 98 98 98 99 101 10 2 10 2 100 101 1 0 5 1 1 0 1 0 4 1 0 6 1 0 7 1 0 8 1 0 9 11 1 9 8 1 0 0 11 0 1 0 7 10 8 10 9 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 17 FILE NAME: 1493-0007-ECPN.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R MA T C H L I N E SE E S H E E T 18 GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICES PROPOSED PEDESTRIAN BRIDGE CROSSING (SEE AVILA RANCH PHASES 2-6 MASS GRADING PLAN). N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE WETLAND LIMIT EXISTING 100 YEAR FLOOD PLAIN LIMIT OF EXISTING 100 YEAR FLOOD PLAIN Avila Ranch - Tract 3089 - Phase 1 (Not a Part) BUCKLEY ROAD (By Separate Document) 12/21/2022 5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-8 5-9 5-10 5-11 5-12 5-13 5-14 5-15 5-16 5-105 105 1 1 0 1 0 9 11 1 110 115 12 0 106 106106 106 106 107 108 109 111 112 113 114 116 117 118 119 115 120 111 112 112 112112 1 1 2 1 1 3 11 3 11 3 1 1 4 116 117 118 119 120 125 125 121 121 122 122 123 123 124 124 126 126 127 12 7 128 128 120 113 115 111 112 113 114 116 117 SD SD SD SD SD SD SD SD SD SD SD SD SD SD ST-25 11 5 12 011 6 11 7 11 8 11 9 12 0 11 7 11 8 11 9 12 1 12 2 1 1 0 11 0 110 108 1 0 8 1 0 9 10 9 109 111 11 1 111 112 1 1 2 112 113 116 117 116 117 11 0 1 0 9 11 1 112 105 105 104 104 106 106 107 107 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 18 FILE NAME: 1493-0007-ECPN.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R MA T C H L I N E SE E S H E E T 19 MATCHLINE SEE SHEET 14 MA T C H L I N E SE E S H E E T 17 SWALE AT TOP-OF-WALL ALONG SOUND BERM TO BE TEMPORARILY LINED WITH PLASTIC (CALTRANS BMP SS-9) DURING MASS GRADING WITH GRAVEL BAG CHECK DAMS (CALTRANS STD T57) SPACED ACCORDING TO CALTRANS STANDARDS. TEMPORARY OUTLET SWALE (SEE DETAIL A, SHEET 21.) GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE SEE PHASES 2-6 MASS GRADING PLAN FOR PERMANENT OUTLET PROTECTION & ENERGY DISSIPATION DEVICES BUCKLEY ROAD (By Separate Document) LIMIT OF EXISTING 100 YEAR FLOOD PLAIN 12/21/2022 5-16 5-17 5-18 5-19 5-20 5-21 5-22 5-23 5-24 120 116 117 118119 121 12 1 121 122 123 124 1 2 0 1 2 1 115 115 12 0 120120120 116 116 11 7 1 1 7 117 11 7 118 118 119 11 9 1 2 1 12 2 1 2 2 1 2 2 122122 12212 2 120 120 125 125 130 130 135 135 115 120 113 1 1 4 116 117 118 119 121 122 ST-27 ST-28 SD SDSD SD SD SD SD SD SD S D TEMPORARY STOCKPILE AREA 120 1 1 8 119121121 117 12 1 12 2 121 120 115 116 115 11 5 114 120 11 9 1 1 5 1 1 6 11 7 11 8 120 12 0 11 8 11 9 11 6 11 7 1 1 5 11 6 11 7 1 1 8 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 19 FILE NAME: 1493-0007-ECPN.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R JE S P E R S E N R O A D HUGHES LANE PROPOSED CONSTRUCTION ENTRANCE (TO BE USED WHEN CONSTRUCTION TRAVEL IS ACTIVE OR PLANNED IN THIS AREA) MA T C H L I N E SE E S H E E T 20 MATCHLINE SEE SHEET 15 MA T C H L I N E SE E S H E E T 18 GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. SEE BUCKLEY ROAD PUBLIC IMPROVEMENT PLANS (BY SEPARATE DOCUMENT) N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE BUCKLEY ROAD (By Separate Document) WETLAND AREA AS IDENTIFIED BY ENVIRONMENTAL CONSULTANT SURVEY (2021). NO CONSTRUCTION ACTIVITIES SHALL OCCUR WITHIN THE ENVIRONMENTALLY SENSITIVE AREA PRIOR TO APPROVAL OF THE PERMITS WITH CALIFORNIA DEPARTMENT OF FISH AND WILDLIFE (CDFW) AND THE REGIONAL WATER QUALITY CONTROL BOARD. SWALE AT TOP-OF-WALL ALONG SOUND BERM TO BE TEMPORARILY LINED WITH PLASTIC (CALTRANS BMP SS-9) DURING MASS GRADING WITH GRAVEL BAG CHECK DAMS (CALTRANS STD T57) SPACED ACCORDING TO CALTRANS STANDARDS. 12/21/2022 201 120 125 12 5 130 13 0 118 119 121122 12 3123 123124 124 124 1 2 4 124 124 126 12 6 12 7 127 127 12 7 12 8 12 8 129 12 9 131 1 3 1 13 2 132 1 3 2 132 132 1 3 2 132 1 3 2132 1 3 2 1 3 2 132 125 12512 5 13 0 122 12 3 123 1 2 3 1 2 3 123 12 3 123123 1 2 3 123 1 2 3 124 12 4 124 124 12 4 12 4 1 2 4 124 1 2 4 1 2 4 124124 124 126 127 1 2 8 129 131 132 132 1 3 2 1 3 2 132 120118119 121 122 123 124 TEMPORARY STOCKPILE AREA 12 5 12 5 12 1 12 2 12 3 12 4 12 4 12 011 9 12 1 1 2 2 12 3 1 2 3 1 2 4 12 4 11 8 1 2 0 1 1 8 1 1 9 1 2 1 1 2 2 123 124 124 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Er o s i o n C o n t r o l P l a n L a y o u t 20 FILE NAME: 1493-0007-ECPN.DWG N 30 60 1 IN = 30 FT 1500 (IN FEET) GRAPHIC SCALE RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R MATCHLINE SEE SHEET 16 MA T C H L I N E SE E S H E E T 19 PROPOSED CONSTRUCTION ENTRANCE AND TEMPORARY CONSTRUCTION ROAD (TO BE USED WHEN CONSTRUCTION TRAVEL IS ACTIVE OR PLANNED IN THIS AREA) GENERAL NOTE: PHASES 2-6 SURFACE IMPROVEMENTS SHOWN FOR REFERENCE ONLY. BUCKLEY ROAD (By Separate Document) 12/21/2022 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Pa d G r a d i n g D e t a i l s 21 FILE NAME: 1493-0007-ECPN-CNST-DETL.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R SEDIMENT TRAP CALCULATIONS 1.SEDIMENT TRAPS HAVE BEEN CALCULATED IN ACCORDANCE WITH CALTRANS BMP SC-3, SHEET 22. ROCK SLOPE PROTECTION, D50 = 9" (AVG. SIZE) FG ROCK SLOPE PROTECTION FABRIC, CLASS 8, OR APPROVED EQUAL. Scale: NTS TYPICAL TEMP. SEDIMENT TRAP OVERFLOW SWALEA 2 1 2.00'MI N . 2 . 0 0 ' 16 " FG CONSTRUCTION NOTES 1.STABILIZED PLASTIC MAY BE SUBSTITUTED FOR ROCK IN ACCORDANCE WITH CALTRANS BMP SS-9 (SHEET 22). SWALE CAPACITY MUST BE MAINTAINED, AS SHOWN IN DETAIL, IN BOTH PLASTIC-LINED AND ROCK-LINED CASES. GENERAL NOTES 1.CALTRANS CONSTRUCTION SITE BEST MANAGEMENT PRACTICES (BMP) MANUAL (DATED MAY 2017) "FACT SHEETS" SHOWN ON THIS SHEET ARE FOR REFERENCE ONLY. 2.IT IS THE CONTRACTOR'S RESPONSIBILITY TO REFER TO ORIGINAL CALTRANS CONSTRUCTION SITE BMP MANUAL (MAY 2017) FOR ENTIRE "FACT SHEET" INFORMATION AND DOCUMENTATION. 12/21/2022 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Pa d G r a d i n g D e t a i l s 22 FILE NAME: 1493-0007-ECPN-CNST-DETL.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R GENERAL NOTES 1.CALTRANS CONSTRUCTION SITE BEST MANAGEMENT PRACTICES (BMP) MANUAL (DATED MAY 2017) "FACT SHEETS" SHOWN ON THIS SHEET ARE FOR REFERENCE ONLY. 2.IT IS THE CONTRACTOR'S RESPONSIBILITY TO REFER TO ORIGINAL CALTRANS CONSTRUCTION SITE BMP MANUAL (MAY 2017) FOR ENTIRE "FACT SHEET" INFORMATION AND DOCUMENTATION. 12/21/2022 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Pa d G r a d i n g D e t a i l s 23 FILE NAME: 1493-0007-ECPN-CNST-DETL.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R GENERAL NOTES 1.CALTRANS CONSTRUCTION SITE BEST MANAGEMENT PRACTICES (BMP) MANUAL (DATED MAY 2017) "FACT SHEETS" SHOWN ON THIS SHEET ARE FOR REFERENCE ONLY. 2.IT IS THE CONTRACTOR'S RESPONSIBILITY TO REFER TO ORIGINAL CALTRANS CONSTRUCTION SITE BMP MANUAL (MAY 2017) FOR ENTIRE "FACT SHEET" INFORMATION AND DOCUMENTATION. 12/21/2022 ORIGINAL SCALE IS IN INCHES FOR REDUCED PLANS T 805 544-4011 F 805 544-4294 612 CLARION COURT SAN LUIS OBISPO, CA 93401 DATE SIGNED SIGNATURE www.wallacegroup.us PLANNING CIVIL AND TRANSPORTATION ENGINEERING CONSTRUCTION MANAGEMENT LANDSCAPE ARCHITECTURE MECHANICAL ENGINEERING PUBLIC WORKS ADMINISTRATION SURVEYING / GIS SOLUTIONS WATER RESOURCES 0 1 2 3 DESIGNERS: DRAWING NO. DATE: DRAWN BY: JOB #: OF 1 2 3 4 A B C D 1 2 3 4 5 5 Copyright © Wallace Group, a California Corporation. All rights reserved. Copies of this drawing shall have this notice. These plans and specifications, and the ideas and designs incorporated herein, are instruments of service prepared for the construction of work shown hereon and shall not be used in whole or in part for any other project without written authority of Wallace Group, a California Corporation. ® 2022 Av i l a R a n c h - T r a c t 3 0 8 9 Er o s i o n C o n t r o l P l a n - Ph a s e s 2 , 3 , 4 , 5 & 6 24 12/21/2022 1493-0007 RAH/ ZKP ZKP SHEETS Pa d G r a d i n g D e t a i l s 24 FILE NAME: 1493-0007-ECPN-CNST-DETL.DWG RAC HE L A . H AWTH O R N E C I V I L No. 73686 A L A T T S OF E C A O NRFI I REGISTE R E D P R O F E SSIONAL E N G I N E E R GENERAL NOTES 1.CALTRANS CONSTRUCTION SITE BEST MANAGEMENT PRACTICES (BMP) MANUAL (DATED MAY 2017) "FACT SHEETS" SHOWN ON THIS SHEET ARE FOR REFERENCE ONLY. 2.IT IS THE CONTRACTOR'S RESPONSIBILITY TO REFER TO ORIGINAL CALTRANS CONSTRUCTION SITE BMP MANUAL (MAY 2017) FOR ENTIRE "FACT SHEET" INFORMATION AND DOCUMENTATION. SCALE: NTS TEMP. EROSION CONTROL ROAD-CROSSING SWALEA 12 " SLOP E 4 : 1 SLOPE 4 : 1 8.00' TEMPORARY ROAD-CROSSING EARTHEN SWALE ROAD AT SUBGRADE CONDITION (PER PLAN) ROAD AT SUBGRADE CONDITION (PER PLAN) CONSTRUCTION NOTES 1.ROAD-CROSSING SWALE CONNECTIONS TO SEDIMENT TRAP OUTLETS AND DOWNSTREAM SEDIMENT TRAP INLETS IN ACCORDANCE WITH CALTRANS BMP SC-3 (SHEET 22). 12/21/2022 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix C: Permit Registration Documents AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Permit Registration Documents included in this Appendix Permit Registration Document ☐ Notice of Intent ☒ Risk Assessment, see Appendix A ☐ Certification ☐ Post Construction Water Balance (N/A) ☐ Copy of Annual Fee Receipt ☐ ATS Design Documents (N/A) ☒ Site Map, see Appendix B ☐ Waste Discharge Identification (WDID) confirmation AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix D: SWPPP Amendments AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 SWPPP Amendment No. Project Name: Project Number: Qualified SWPPP Developer’s Certification of the Stormwater Pollution Prevention Plan Amendment “This Stormwater Pollution Prevention Plan and attachments were prepared under my direction to meet the requirements of the California Construction General Permit (SWRCB Order No. 2009-009-DWQ as amended by 2010-0014-DWQ and 2012-0006-DWQ). I certify that I am a Qualified SWPPP Developer in good standing as of the date signed below.” QSD Signature Date QSD Name QSD Certificate Number Title and Affiliation Telephone Address Email AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix E: Submitted Changes to PRDs AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Log of Updated PRDs The General Permit allows for the reduction or increase of the total acreage covered under the General Permit when a portion of the project is complete and/or conditions for termination of coverage have been met; when ownership of a portion of the project is purchased by a different entity; or when new acreage is added to the project. Modified PRDs shall be filed electronically within 30 days of a reduction or increase in total disturbed area if a change in permit covered acreage is to be sought. The SWPPP shall be modified appropriately, with revisions and amendments recorded in Appendix C. Updated PRDs submitted electronically via SMARTS can be found in this Appendix. This appendix includes all of the following updated PRDs (check all that apply): ☐ Revised Notice of Intent (NOI); ☐ Revised Site Map; ☐ Revised Risk Assessment; ☐ New landowner’s information (name, address, phone number, email address); and ☐ New signed certification statement. Signature of Legally Responsible Person or Approved Signatory Date Name of Legally Responsible Person or Approved Signatory Telephone Number AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix F: Construction Schedule AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Table F.1 Construction Schedule Phase Activity Proposed Start Date Proposed End Date Gr a d i n g a n d L a n d De v e l o p m e n t Clearing and Grubbing 4/15/2023 5/1/2023 Phase 2, 3, 4, 5 & 6 Mass Grading 5/1/2023 12/1/2026 Retaining Walls 5/1/2023 12/1/2026 St r e e t s a n d Ut i l i t i e s P h a s e Storm Drain Construction 10/1/2026 12/1/2026 Arch Culverts and Pedestrian Bridges 10/1/2026 12/1/2026 La n d s c a p i n g a n d Si t e S t a b i l i z a t i o n Ph a s e Hydroseed 12/1/2026 12/31/2026 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix G: Construction Activities, Materials Used, and Associated Pollutants AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Table G.1 Construction Activities and Associated Pollutants Phase Potential Activities Associated Materials or Pollutants Pollutant Category(1) Gr a d i n g a n d L a n d D e v e l o p m e n t Adhesives · Adhesives, glues, resins, epoxy synthetics, PVC cement · Caulks, sealers, putty, sealing agents and Coal tars Oil and Grease Synthetic Organics Sanitary Waste · Portable toilets Nutrients Solid Waste · Litter, trash and debris · Vegetation Gross Pollutants Vehicle and Equipment use · Equipment operation · Equipment maintenance · Equipment washing · Equipment fueling Oil and Grease St r e e t s a n d Ut i l i t i e s P h a s e Asphalt paving/curbs · Hot and cold mix asphalt Oil and Grease Painting · Paint thinners, acetone, solvents Metals, Synthetic Organics Ve r t i c a l Co n s t r u ct i o n Ph a s e This project does not include a Vertical Construction Phase La n d s c a p i n g a n d Si t e S t a b i l i z a t i o n Ph a s e Planting/Vegetation Management · Vegetation control (pesticides/herbicides) · Planting · Plant maintenance · Vegetation removal Nutrients, Metals, Synthetic Organics (1) Categories per CASQA BMP Handbook (i.e., Sediment, Nutrients, Bacteria and Viruses, Oil and Grease, Metals, Synthetic Organics, Pesticides, Gross Pollutants, and Vector Production) AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix H: Caltrans Stormwater BMP Construction Fact Sheets Caltrans Storm Water Quality Handbook (including Caltrans SWQ BMP Fact Sheets) Hyperlink – Caltrans Storm Water Quality Handbook Web Address – https://dot.ca.gov/-/media/dot-media/programs/construction/documents/environmental- compliance/csbmp-may-2017-final.pdf AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix I: BMP Inspection Form AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 BMP INSPECTION REPORT Date and Time of Inspection: Date Report Written: Inspection Type: (Circle one) Weekly Complete Parts I,II,III,VII and VIII Pre-Storm Complete Parts I,II,III,IV and VII During Rain Event Complete Parts I, II, III, V, and VII Post-Storm Complete Parts I,II,III,VI and VII Part I. General Information Site Information Construction Site Name: Tract 3089 Phases 2, 3, 4, 5 & 6 Mass Grading of Avila Ranch Construction stage and completed activities: ☐ Grading and Land Development ☐ Streets and Utilities Phase ☐ Vertical Construction Phase ☐ Landscaping and Site Stabilization Phase Approximate area of site that is exposed: Photos Taken: (Circle one) Yes No Photo Reference IDs: Weather Estimate storm beginning: (date and time) Estimate storm duration: (hours) Estimate time since last storm: (days or hours) Rain gauge reading and location: (in) Is a “Qualifying Event” predicted or did one occur (i.e., 0.5” rain with 48-hrs or greater between events)? (Y/N) If yes, summarize forecast: Exemption Documentation (explanation required if inspection could not be conducted). Visual inspections are not required outside of business hours or during dangerous weather conditions such as flooding or electrical storms. Inspector Information Inspector Name: Inspector Title: Signature: Date: AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Part II. BMP Observations. Describe deficiencies in Part III. Minimum BMPs for Risk Level 2 Sites Failures or other short comings (yes, no, N/A) Action Required (yes/no) Action Implemented (Date) Good Housekeeping for Construction Materials Inventory of products (excluding materials designed to be outdoors) Stockpiled construction materials not actively in use are covered and bermed All chemicals are stored in watertight containers with appropriate secondary containment, or in a completely enclosed storage shed Construction materials are minimally exposed to precipitation BMPs preventing the off-site tracking of materials are implemented and properly effective Good Housekeeping for Waste Management Wash/rinse water and materials are prevented from being disposed into the storm drain system Portable toilets are contained to prevent discharges of waste Sanitation facilities are clean and with no apparent leaks and spills Equipment is in place to cover waste disposal containers at the end of business day and during rain events Discharges from waste disposal containers are prevented from discharging to the storm drain system / receiving water Stockpiled waste material is securely protected from wind and rain if not actively in use Procedures are in place for addressing hazardous and non- hazardous spills Appropriate spill response personnel are assigned and trained Equipment and materials for cleanup of spills is available onsite Washout areas (e.g., concrete) are contained appropriately to prevent discharge or infiltration into the underlying soil Good Housekeeping for Vehicle Storage and Maintenance Measures are in place to prevent oil, grease, or fuel from leaking into the ground, storm drains, or surface waters All equipment or vehicles are fueled, maintained, and stored in a designated area with appropriate BMPs Vehicle and equipment leaks are cleaned immediately and disposed of properly AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Part II. BMP Observations Continued. Describe deficiencies in Part III. Minimum BMPs for Risk Level 2 Sites Adequately designed, implemented and effective (yes, no, N/A) Action Required (yes/no) Action Implemented (Date) Good Housekeeping for Landscape Materials Stockpiled landscape materials such as mulches and topsoil are contained and covered when not actively in use Erodible landscape material has not been applied 2 days before a forecasted rain event or during an event Erodible landscape materials are applied at quantities and rates in accordance with manufacturer recommendations Bagged erodible landscape materials are stored on pallets and covered Good Housekeeping for Air Deposition of Site Materials Good housekeeping measures are implemented onsite to control the air deposition of site materials and from site operations Non-Stormwater Management Non-stormwater discharges are properly controlled Vehicles are washed in a manner to prevent non- stormwater discharges to surface waters or drainage systems Streets are cleaned in a manner to prevent unauthorized non-stormwater discharges to surface waters or drainage systems. Erosion Controls Wind erosion controls are effectively implemented Effective soil cover is provided for disturbed areas inactive (i.e., not scheduled to be disturbed for 14 days) as well as finished slopes, open space, utility backfill, and completed lots The use of plastic materials is limited in cases when a more sustainable, environmentally friendly alternative exists. Sediment Controls Perimeter controls are established and effective at controlling erosion and sediment discharges from the site Entrances and exits are stabilized to control erosion and sediment discharges from the site Sediment basins are properly maintained AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Linear sediment control along toe of slope, face of slope and at grade breaks) Limit construction activity to and from site to entrances and exits that employ effective controls to prevent offsite tracking Ensure all storm drain inlets and perimeter controls, runoff control BMPs and pollutants controls at entrances and exits are maintained and protected from activities that reduce their effectiveness Inspect all immediate access roads daily Run-On and Run-Off Controls Run-on to the site is effectively managed and directed away from all disturbed areas. Other Are the project SWPPP and BMP plan up to date, available on-site and being properly implemented? Part III. Descriptions of BMP Deficiencies Deficiency Repairs Implemented: Note - Repairs must begin within 72 hours of identification and complete repairs as soon as possible. Start Date Action 1. 2. 3. 4. 5. 6. 7. 8. *Note: Attach additional sheets as needed. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Part IV. Additional Pre-Storm Observations. Note the presence or absence of floating and suspended materials, sheen, discoloration, turbidity, odors, and source(s) of pollutants(s). Yes, No, N/A Do stormwater storage and containment areas have adequate freeboard? If no, complete Part III. Are drainage areas free of spills, leaks, or uncontrolled pollutant sources? If no, complete Part VII and describe below. Notes: Are stormwater storage and containment areas free of leaks? If no, complete Parts III and/or VII and describe below. Notes: *Note: Attach additional sheets as needed. Part V. Additional During Storm Observations. If BMPs cannot be inspected during inclement weather, list the results of visual inspections at all relevant outfalls, discharge points, and downstream locations. Note odors or visible sheen on the surface of discharges. Complete Part VII (Corrective Actions) as needed. Outfall, Discharge Point, or Other Downstream Location Location Description Location Description Location Description Location Description Location Description Location Description Location Description Location Description *Note: Attach additional sheets as needed. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Part VI. Additional Post-Storm Observations. Visually observe (inspect) stormwater discharges at all discharge locations within two business days (48 hours) after each qualifying rain event, and observe (inspect) the discharge of stored or contained stormwater that is derived from and discharged subsequent to a qualifying rain event producing precipitation of ½ inch or more at the time of discharge. Complete Part VII (Corrective Actions) as needed. Discharge Location, Storage or Containment Area Visual Observation *Note: Attach additional sheets as needed. Part VII. Additional Corrective Actions Required. Identify additional corrective actions not included with BMP Deficiencies (Part III) above. Note if SWPPP change is required. Required Actions Implementation Date *Note: Attach additional sheets as needed. AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Part VIII. Project BMP List BMP Location [LIST MANDATORY BMPs] [N/A or SEE SITE MAP IN APPENDIX B] Please see the attached site map on which the Inspector shall note: · Any revisions to or deficiencies in the BMPs · The locations at which the site inspections and sampling were performed · Changes in the construction status (active, inactive, undisturbed, final stabilization) of areas within the site AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix J: Project Specific Rain Event Action Plan Template July 2012 California Stormwater BMP Handbook | www.casqa.org C-1 0BRain Event Action Plan (REAP) Date: WDID Number: Date Rain Predicted to Occur: Predicted % chance of rain: Site Information: Site Name, City and Zip Code Project Risk Level: □ Risk Level 2 □ Risk Level 3 Site Stormwater Manager Information: Name, Company, Emergency Phone Number (24/7) Erosion and Sediment Control Contractor – Labor Force contracted for the site: Name, Company, Emergency Phone Number (24/7) Stormwater Sampling Agent: Name, Company, Emergency Phone Number (24/7) Current Phase of Construction Check ALL the boxes below that apply to your site.  Grading and Land Development  Vertical Construction  Inactive Site  Streets and Utilities  Final Landscaping and Site Stabilization  Other: Activities Associated with Current Phase(s) Check ALL the boxes below that apply to your site (some apply to all Phases). UGrading and Land Development:  Demolition  Vegetation Removal  Vegetation Salvage-Harvest  Rough Grade  Finish Grade  Blasting  Soil Amendment(s):  Excavation (_____ ft)  Soils Testing  Rock Crushing  Erosion and Sediment Control  Surveying  Equip. Maintenance/Fueling  Material Delivery and Storage  Other: UStreets and Utilities:  Finish Grade  Utility Install: water-sewer-gas  Paving Operations  Equip. Maintenance/Fueling  Storm Drain Installation  Material Delivery & Storage  Curb and Gutter/Concrete Pour  Masonry  Other: UVertical Construction:  Framing  Carpentry  Concrete/Forms/Foundation  Masonry  Electrical  Painting  Drywall/Interior Walls  Plumbing  Stucco  Equip. Maintenance/Fueling  HVAC  Tile  Exterior Siding  Insulation  Landscaping & Irrigation  Flooring  Roofing  Other: UFinal Landscaping & Site Stabilization:  Stabilization  Vegetation Establishment  E&S Control BMP Removal  Finish Grade  Storage Yard/ Material Removal  Landscape Installation  Painting and Touch-Up  Irrigation System Testing  Other:  Drainage Inlet Stencils  Inlet Filtration  Perm. Water Quality Ponds  Other: UInactive Construction Site:  E & S Control Device Installation  E & S Control Device Maintenance  Other:  Routine Site Inspection  Street Sweeping  Other:  Trash Removal  Other: July 2012 California Stormwater BMP Handbook Portal | www.casqa.org C-2 Rain Event Action Plan (REAP) Date: WDID Number: Trades Active on Site during Current Phase(s) Check ALL the boxes below that apply to your site  Storm Drain Improvement  Grading Contractor  Surveyor- Soil Technician  Street Improvements  Water Pipe Installation  Sanitary Station Provider  Material Delivery  Sewer Pipe Installation  Electrical  Trenching  Gas Pipe Installation  Carpentry  Concrete Pouring  Electrical Installation  Plumbing  Foundation  Communication Installation  Masonry  Demolition  Erosion and Sediment Control  Water, Sewer, Electric Utilities  Material Delivery  Equipment Fueling/Maintenance  Rock Products  Tile Work- Flooring  Utilities, e.g., Sewer, Electric  Painters  Drywall  Roofers  Carpenters  HVAC installers  Stucco  Pest Control: e.g., termite prevention  Exterior Siding  Masons  Water Feature Installation  Insulation  Landscapers  Utility Line Testers  Fireproofing  Riggers  Irrigation System Installation  Steel Systems  Utility Line Testers  Other: 16BTrade Contractor Information Provided Check ALL the boxes below that apply to your site.  Educational Material Handout  Tailgate Meetings  Training Workshop  Contractual Language  Fines and Penalties  Signage  Other:  Other:  Other: 17BContinued on next page. July 2012 California Stormwater BMP Handbook Portal | www.casqa.org C-3 Rain Event Action Plan (REAP) Date of REAP BWDID Number: Date Rain Predicted to Occur: Predicted % chance of rain: Predicted Rain Event Triggered Actions Below is a list of suggested actions and items to review for this project. Each active Trade should check all material storage areas, stockpiles, waste management areas, vehicle and equipment storage and maintenance, areas of active soil disturbance, and areas of active work to ensure the proper implementation of BMPs. Project-wide BMPs should be checked and cross- referenced to the BMP progress map. Trade or Activity Suggested action(s) to perform / item(s) to review prior to rain event  Information & Scheduling  Inform trade supervisors of predicted rain  Check scheduled activities and reschedule as needed  Alert erosion/sediment control provider  Alert sample collection contractor (if applicable)  Schedule staff for extended rain inspections  Check Erosion and Sediment Control (ESC) material stock  Review BMP progress map  Other:___________________________________  ________________________________________  ________________________________________  Material storage areas  Material under cover or in sheds (ex: treated woods and metals)  Perimeter control around stockpiles  Other:___________________________________  ________________________________________  __________________________________  Waste management areas  Dumpsters closed  Drain holes plugged  Recycling bins covered  Sanitary stations bermed and protected from tipping  Other:___________________________________  ________________________________________  ________________________________________  Trade operations  Exterior operations shut down for event (e.g., no concrete pours or paving)  Soil treatments (e.g.,: fertilizer) ceased within 24 hours of event  Materials and equipment (ex: tools) properly stored and covered  Waste and debris disposed in covered dumpsters or removed from site  Trenches and excavations protected  Perimeter controls around disturbed areas  Fueling and repair areas covered and bermed  Other:___________________________________  ________________________________________  __________________________________  Site ESC BMPs  Adequate capacity in sediment basins and traps  Site perimeter controls in place  Catch basin and drop inlet protection in place and cleaned  Temporary erosion controls deployed  Temporary perimeter controls deployed around disturbed areas and stockpiles  Roads swept; site ingress and egress points stabilized  Other:___________________________________  ________________________________________  __________________________________  Concrete rinse out area  Adequate capacity for rain  Wash-out bins covered  Other:___________________________________  ________________________________________  __________________________________  Spill and drips  All incident spills and drips, including paint, stucco, fuel, and oil cleaned  Drip pans emptied  Other:___________________________________  ________________________________________  __________________________________ July 2012 California Stormwater BMP Handbook Portal | www.casqa.org C-4 Continued on next page.  Other / Discussion / Diagrams  ________________________________________  ________________________________________  ________________________________________  ________________________________________  ________________________________________  ________________________________________  ________________________________________  ________________________________________  ________________________________________  ________________________________________  ________________________________________  ________________________________________  ________________________________________ Attach a printout of the weather forecast from the NOAA website to the REAP. I certify under penalty of law that this Rain Event Action Plan (REAP) will be performed in accordance with the General Permit by me or under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. ______________________________________________________Date: __________________________ Qualified SWPPP Practitioner (Use ink please) AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix K: Training Reporting Form AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Trained Contractor Personnel Log Stormwater Management Training Log and Documentation Project Name: Tract 3089 Phases 2, 3, 4, 5 & 6 Mass Grading of Avila Ranch WDID #: Stormwater Management Topic: (check as appropriate) ☐Erosion Control ☐Sediment Control ☐Wind Erosion Control ☐Tracking Control ☐Non-Stormwater Management ☐Stormwater Sampling ☐Waste Management and Materials Pollution Control Specific Training Objective: Location: Date: _ Instructor: Telephone: Course Length (hours): Attendee Roster (Attach additional forms if necessary) Name Company Phone As needed, add proof of external training (e.g., course completion certificates, credentials for QSP, QSD). AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix L: Responsible Parties AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Identification of QSP Project Name: Tract 3089 Phases 2, 3, 4, 5 & 6 Mass Grading of Avila Ranch WDID #: The following are QSPs associated with this project Name of Personnel(1) Company Date Michael Cripe Oasis Associates (1) If additional QSPs are required on the job site add additional lines and include information here RA C H E L H A W T H O R N E Oc t 2 7 , 2 0 2 2 - J a n 2 5 , 2 0 2 5 Ce r t i f i c a t e # 0 0 2 8 7 AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix M: Contractors and Subcontractors AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 GENERAL CONTRACTOR · [NAME] · [ADDRESS] · [PHONE NUMBER] SUB CONTRACTOR · [NAME] · [ADDRESS] · [PHONE NUMBER] AVILA RANCH - PHASES 2, 3, 4, 5 & 6 SWPPP JANUARY 2023 Appendix N: Construction General Permit Construction Stormwater General Permit Hyperlink – Construction Stormwater General Permits | California State Water Resources Control Board Web Address – https://www.waterboards.ca.gov/water_issues/programs/stormwater/constpermits.html