Loading...
HomeMy WebLinkAbout2021 CorrespondenceBliss, Matheson From: Chavez, Sergio@DTSC <Sergio.Chavez@dtsc.ca.gov> Sent: Thursday, August 12, 2021 7:34 AM To: Bliss, Matheson Subject: Re: PCE Plume San Luis Obispo Project Good Morning Matteson, I have not reached out to the Harry Hamilton yet. I gave the address over to my contractors to see if we could fit it into the our sampling plan. I haven't heard back from them yet, but I will try to get an answer by today and I will reach out to Harry to inform of the plan. Also, you wouldn't have to do anything on your end, the sampling would be directed by DTSC, but I will keep you informed. Thanks, Sergio Get Outlook for iOS From: Bliss, Matheson <mbliss@slocity.org> Sent: Wednesday, August 11, 20215:02:07 PM To: Chavez, Sergio@DTSC <Sergio.Chavez@dtsc.ca.gov> Subject: RE: PCE Plume San Luis Obispo Project Hi Sergio, Have you been able to get into contact with Harry Hamilton? Please let me know if I need to do anything on my end regarding directing them to sample. Thank you, Matheson Bliss Hazardous Materials Coordinator C1W OF SHIR LUIS OBISPO Fire Department Fire Prevention E mbliss@slocity.org T 805.781.7383 C 805.540.4413 S!OGiiy.ory in RD0 Stay connected with the City by signing up for e-notifications From: Bliss, Matheson Sent: Thursday, August 5, 2021 2:12 PM To: Chavez, Sergio@DTSC <Sergio.Chavez@dtsc.ca.gov> Subject: RE: PCE Plume San Luis Obispo Project Hi Sergio, Thank you for working with us on this. I have been talking with Harry Hamilton regarding the site that is being redeveloped and will try to get a timeline from him and Building. Harry's contact info: harry(a)abovegradeengineering com Main. ( 805 1 o4V-J 1 lJ Direct (805) 548-1171 Cell: ( Best, Mattie Matheson Bliss Hazardous Materials Coordinator GAS Y O.eCITYOF to O p ? / 1 Fire Department Fire Prevention E mbliss(a-)slocity.orq T 805.781.7383 C 805.540.4413 slocity.org ffJrr7-) OP) Stay connected with the City by signing up for e-notifications From: Chavez, Sergio@DTSC <Sergio.Chavez@dtsc.ca.gov> Sent: Thursday, August 5, 2021 11:40 AM To: Bliss, Matheson <mbliss@slocity.orR> Cc: Tapia, Joseph@DTSC <Joseph.Tapia @dtsc.ca.gov> Subject: RE: PCE Plume San Luis Obispo Project IplThis message is from an External Source. Use caution when deciding to open attachments, click links, or respond. Hi Matheson, I apologize for the late response, I've been away from work. We can coordinate with the property owner when any activities or work is scheduled at the property owner's address, but if any of the property owners request to be notified with activities outside of the address, they would have to reach out to us periodically or view our activities on Enviro5tor. Please advise any property owner within or near the plume who are submitting new building permits to contact me so we can work together to avoid any complications. Can you please send over the property owner's contact information at 207 S Higuera Street? I will make sure my contractors coordinate with any activity at the address. If you have any questions, feel free to call me on my cell: ( Thank you, Sergio Chavez Project Manager Department of Toxic Substances Control Cleanup Program Engineering & Special Projects 1515 Tollhouse Road, Clovis CA 93611 Office: (559) 297-3908 sergio.chavez@dtsc.ca.p,ov From: Bliss, Matheson <mbliss@slocitv.org> Sent: Thursday, July 29, 20217:47 AM To: Chavez, Sergio@DTSC <Sergio.Chavez@dtsc.ca.Rov> Subject: PCE Plume San Luis Obispo Project EXTERNAL: Hi Sergio, I had a discussion with Joe Tapia yesterday who directed me to contact you. I have a mixed -use redevelopment project happening at 207 S Higuera St, San Luis Obispo which is close to Paul's Dry Cleaners —apart of the PCE Plume in SLO. I saw a report prepared for DTSC (Conceptual Site Model and Workplan for Soil Gas and Indoor Air Sampling San Luis Obispo PCE Groundwater Plume by GeoSyntec, 10/30/2020) that mentions a data gap where this proposed redevelopment is going in and was hoping to confirm with you directives for the property developer regarding soil/vapor sampling. They have proposed to install a vapor barrier system in lieu of sampling; however, Joe mentioned yesterday that they need to know what concentrations of contaminants are there in the first place prior to installing such a system. Additionally, Joe mentioned that DTSC was still going to do additional investigation in the area and I wanted to know if that can be coordinated now with this property owner. Thank you for any help, Matheson Bliss Hazardous Materials Coordinator LUIS OBISPO Fire Department Fire Prevention E mbliss(aD-slocity.org T 805.781.7383 C (805) 540-4413 slocity.org V1 0 Stay connected with the City by signing up for e-notifications Bliss, Matheson From: Liu, Wei@Waterboards <Wei.Liu@waterboards.ca.gov> Sent: Thursday, July 15, 2021 9:20 AM To: Bliss, Matheson Subject: Re: 207 Higuera St Redevelopment Project Mattie, If they discover the UST is actually removed and no visible contamination, they do not necessarily need further investigation. Similarly, the developer is not necessarily required to perform soil vapor sampling since there is no case against this property and more importantly, they will take mitigation measures. So if no UST, no further action may be required. Wei Liu, Ph.D., P.G. #5888 California Regional Water Quality Control Board Central Coast Region 895 Aerovista Place, Suite 101 San Luis Obispo, CA 93401-7909 Tele: (805) 542-4648 E-Mail: Wei.Liu@waterboards.ca.gov Note: I am teleworking until further notice due to the COVID-19 pandemic. You can reach me through e-mail or leave a message on my office phone if I am unavailable to take your call. From: Bliss, Matheson <mbliss@slocity.org> Sent: Wednesday, July 14, 20219:21 AM To: Liu, Wei@Waterboards <Wei.Liu @waterboards.ca.gov> Subject: RE: 207 Higuera St Redevelopment Project EXTERNAL: Thanks for the information Wei. We have a UST removal permit from 1986 with no follow-up documentation on the removal or any soil sampling at the time. If they go to the site and discover the UST was actually removed, they should still complete confirmation soil sampling in the approximate area of the former UST, correct? Additionally, the developer stated he wants to mitigate any threat of vapor intrusion by placing a vapor barrier. PCE and other industrial contaminant concerns? Thanks Matheson Bliss Hazardous Materials Coordinator CITY OF ' SHIZ LUIS OBISPO Fire Department Fire Prevention E mbliss@slocity.org T 805.781.7383 C 805.540.4413 11 rl- ' Stay connected with the City by signing up for e-notifications From: Liu, Wei@Waterboards <Wei.Liu @waterboards.ca.gov> Sent: Tuesday, July 13, 2021 12:07 PM To: Bliss, Matheson <mbliss@slocity.org> Subject: Re: 207 Higuera St Redevelopment Project ! This message is from an External Source. Use caution when deciding to open attachments, click links, or respond. Hi Matti, Since UST might be used and still exist, further investigation is needed. If the UST existence is confirmed, a Phase II investigation with soil and probably groundwater sampling should be conducted, and a UST case may be opened for this site. In addition, as shown in the attached figure, the subject site might have been impacted with PCE contamination from nearby Paul's Dry Cleaner site. Thus, soil vapor sampling as a part of the Phase II investigation should also be required. Since the subject site is one of our Information Only Cases pending further assessment, please email me all previous and future technical documents related to/for the subject site, such as the Phase I report so that I can upload them to the GeoTracker case file for the subject site. Also, since the Paul's Dry Cleaners site is required to perform site investigation, I am sure we will have continuous discussions about this case later. Regards, Wei Liu, Ph.D., P.G. #5888 California Regional Water Quality Control Board Central Coast Region 895 Aerovista Place, Suite 101 San Luis Obispo, CA 93401-7909 Tele: (805) 542-4648 E-Mail: Wei.Liu@waterboards.ca.gov Note: I am teleworking until further notice due to the COVID-19 pandemic. You can reach me through e-mail or leave a message on my office phone if I am unavailable to take your call. From: Bliss, Matheson <mbliss@slocity.or> Sent: Monday, July 12, 2021 5:32 PM To: Liu, Wei@Waterboards <Wei.Liu @waterboards.ca.Rov> Subject: 207 Higuera St Redevelopment Project EXTERNAL: Hi Wei, I hope all is well. I now work with SLO City Fire Department and we have an upcoming project at 207 Higuera St in SLO. They are planning on constructing a mixed -use building with a residential component. I saw there has been some investigation of PCE from Paul's Dry Cleaners (214 Higuera,T10000016996) which is across Higuera from the subject facility. I am wondering if there is something specifically I need to direct the owner to do as far as soil, water, and/or vapor sampling due to the proximity to this active site. On top of that they have prepared a Phase I that also lists a potential underground storage tank on the site and that the site has had other industrial uses over the years, including a lumber yard. They are planning to investigate whether the UST is still at the site on Monday 7/19. Thanks for any help, Mattie Matheson Bliss Hazardous Materials Coordinator %'C YaO Fire Department Fire Prevention E mbliss(a_)slocity.orq T 805.781.7383 C (805) 540-4413 61ocily ui g E1 r(g© Stay connected with the City by signing up for e-notifications Analytical Report Oilfield Environmental &Compliance, Inc. John Kammer Geo Solutions Inc. 220 High Street San Luis Obispo, CA 93401 Project: Geo Solutions Number: 207 Higuera OEC Work Order: Report Date: 2104547 July 23, 2021 16:56 Enclosed is an analytical report for the above referenced project. The samples included in this report were received on July 19, 2021 14:00 and analyzed in accordance with the attached chain -of -custody. Unless otherwise noted, all analytical testing was accomplished in accordance with the guidelines established in our Quality Manual, applicable standard operating procedures, and other related documentation. The results in this analytical report are limited to the samples tested and any reproduction thereof must be made in its entirety. If you have any questions regarding this report, please do not hesitate to contact the undersigned. Authorized for release by: Meredith Sprister, Business Director msprister@oecusa.com This laboratory is accredited in accordance with the recognised International Standard ISO/IEC 17025. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to joint ISOILAC-IAFCominuniqucf dated.IAril2017) 307 Roemer Wa Suite 300 y, � \ u /-y, s��n ; '- client. oec.com\reports Santa Maria, CA 93454 r� www.oecusa.com Main: (805) 922-4772 Pam TNI 2016 & ISO/IEC 17025:2017 Fax: (805) 925-3376 71'stins CA-ELAP 2438, TNI 02666 Accreditation 499 137 Oilfield Environmental &Compliance, Inc. Geo Solutions Inc. Project: Geo Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 S:nnplr ID Laboratory 11) Client Matrix I.:�h �1:uri� Date Sampled Datt Received SS-1 2104547-01 Solid Solid 07/19/2021 00:00 07/19/2021 14:00 Analysis Batch ID Preparation Date/Time Semi -Volatile Organic TPH by GC/FID 8015 Diesel & Motor Oil List BIG0582 07/22/2021 08:21 Total Metals by CVAA Mercury Total EPA 7471A BIG0664 07/23/2021 07:49 Total Metals by ICP 6010B Total BIG0588 07/21/2021 09:44 Volatile Organic Compounds by GUMS 8260B BTEX B 1 G0538 07/20/2021 09:00 8260B MTBE B I G0538 07/20/2021 09:00 Volatile Organic TPH by GC/FID 8015 TPH-Gasoline BIG0574 07/20/2021 15:20 The results in this report apply to the samples analyzed in accordance with the chain ofcuslody document. This analytical report must be reproduced in its entirety. CA-ELAP 2438, TN102666 Client Connect: client.oec.comlreports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oecusa.com FAX (805) 925-3376 Page 2 of l5 Oilfield Environmental &Compliance, Inc. Geo Solutions Inc. Project: Geo Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 Sample ID: SS-1 Sampled: 07/19/21 00:00 Matrix: Solid Sampled by : John Kammer Lab ID : 2104547-01 Field Data: NA Analyte Result RL Units Dilution Batch Analyzed Method Notes Total Metals by CVAA Mercury ND 0.090 mg/kg i B 1 G0664 07/23/21 13:17 EPA 7471A Total Metals by ICP Antimony ND 23 mg/kg 1 BIG0588 07/21/2114:50 EPA6010B Arsenic 6.6 19 Barium 150 0.93 " Beryllium ND 047 " Cadmium ND 0.23 Chromium 150 0.47 N-02, N-03 Cobalt 16 0.47 " Copper 21 093 " Lead 3.4 047 " Molybdenum 3.6 047 " Nickel 200 047 N-02 Selenium ND 19 " Silver ND 047 " Thallium ND 093 " Vanadium 45 1.9 " Zinc 49 1.9 " Volatile Organic TPH by GC/FID TPH Gasoline (C5-C12) ND 0.50 mg/kg 1 BIG0574 07/20/2117:34 EPA8015M Semi -Volatile Organic TPH by GC/FID TPH Diesel (C13-C22) ND 10 mg/kg 1 TPH Motor Oil (C23-C40) ND 50 " Surrogate: o-Terphenyl 95 % (58 -143) B 1 G0582 07/22/21 11:05 EPA 8015M The results in this report apply to the samples analyzed in accordance with the chain ofcuslody document. This analytical report must be reproduced in its entirety. CA-ELAP 2438, TN102666 Client Connect: client. oec.comlreports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oecusa.com FAX: (805) 925-3376 Page 3 of 15 Oilfield Environmental &Compliance, Inc. Geo Solutions Inc. Project: Geo Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 Sample ID: SS-1 Sampled: 07/19/21 00:00 Matrix : Solid Sampled by : John Kammer Lab 1D : 2104547.01 Field Data. NA Analyte Result RL Units Dilution Batch Analyzed Method Notes Volatile Organic Compounds by GUMS Benzene ND 0.0050 mg/kg 1 BIG0538 07/20/2110:48 EPA8260B Ethylbenzene ND 0.0050 " Methyl-t-butyl ether ND 0.0050 " Toluene ND 0.0050 " Xylenes (total) ND 0.0050 " Surrogate: Dibromofluoromethane 102 % (74- 122) " Surrogate: Toluene-d8 99 % (65 -128) " Surrogate: 4-Bromofluorobenzene 101 % (75 - 121) The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. CA-ELAP 2438, TN102666 Client Connect: client.oec.comlreports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oecusa.com FAX: (805) 925-3376 Page 4 of l5 WA Oilfield Environmental &Compliance, Inc. Geo Solutions Inc. Project: Geo Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 Analyte Result RL Units Spike Source %REC %REC RPD RPD Notes Level Result Limits Limit Batch BIG0664 - EPA 7471A Preparation: EPA 7471A Prep 07/23/21 07:49 Blank (B1G0664-BLKI) Analyzed: 07/23/21 13:15 Mercury ND 0.10 mg/kg LCS (B1G0664-BSl) Analyzed: 07/23/21 13:11 Mercury 0.835 0.10 mg/kg 0.833 100 85-115 LCS Dup (B1G0664-BSDl) Analyzed: 07/23/21 13:13 Mercury 0 859 0 10 mg/kg 0 833 103 85-115 3 20 Duplicate (B1G0664-DUPI) Source: 2104547-01 Analyzed: 07/23/21 13:19 Mercury 0.0523 0.091 mg/kg 0.0670 25 20 QR-04 Matrix Spike (B1G0664-MSl) Source: 2104547-01 Analyzed: 07/23/21 13:21 Mercury 0 887 0 098 mg/kg 0.817 0.0670 100 75-125 Matrix Spike Dup (B1G0664-MSD1) Source: 2104547-01 Analyzed: 07/23/21 13:23 Mercury 0 828 0 092 mg/kg 0 769 00670 99 75-125 7 20 Post Spike (B1G0664-PSI) Source: 2104547-01 Analyzed: 07/23/21 13:25 Mercury 522 ug/L 5.00 0.447 96 85-115 The results in this report apply to the samples analy_ed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. CA-ELAP 2438, TN102666 Client Connect: client.oec.comlreports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oacusa.com FAX: (805) 925-3376 Page 5 of 15 GT�W Oilfield Environmental &Compliance, Inc. Gen Solutions Inc. Project: Geo Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 tnalyte Result RL Units Spike Source %REC %REC RPD RPD Notes Level Result Limits Limit Batch BIG0588 -EPA 6010B Preparation: EPA 3050B 07/21/21 09:44 Blank (B1G0588-BLK1) Analyzed: 07/21 /21 15:04 Antimony ND 0.050 mg/kg Arsenic ND 0.040 " Barium ND 0.020 " Beryllium ND 0.010 " Cadmium ND 0.0050 " Chromium ND 0.010 " Cobalt ND 0.010 " Copper ND 0.020 " Lead ND 0.010 " Molybdenum ND 0.010 " Nickel ND 0.010 " Selenium ND 0.040 " Silver ND 0.010 " Thallium ND 0.020 " Vanadium ND 0.040 " Zinc ND 0.040 " LCS (B1G0588-BSI) Analyzed: 07/21/21 14:45 Antimony 197 0.050 mg/kg 2.00 98 80-120 Arsenic 1.99 0.040 2.00 99 80-120 Barium 201 0.020 2.00 100 80-120 Beryllium 204 0.010 2.00 102 80-120 Cadmium 204 0.0050 2.00 102 80-120 Chromium 204 0.010 2.00 102 80-120 Cobalt 2.05 0.010 200 102 80-120 Copper 2.02 0.020 200 101 80-120 Lead 2.04 0.010 200 102 80-120 Molybdenum 1.97 0.010 200 99 80-120 Nickel 2.04 0.010 2.00 102 80-120 Selenium 1.94 0.040 2.00 97 80-120 Silver 0.101 0.010 0.100 101 80-120 Thallium 2.05 0.020 2.00 102 80-120 Vanadium 2.00 0.040 2.00 100 80-120 Zinc 2.03 0.040 2.00 102 80-120 The results in this report apply to the samples analyfed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. CA-ELAP 2438, TN102666 Client Connect: client.oec.comlreports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oecusa.com FAX: (805) 925-3376 Page 6 of 15 (M Oilfield Environmental &Compliance, Inc. Geo Solutions Inc. Project: Geo Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 %nalyte Result RL Units Spike Source %REC %REC RPD RPD Notes Level Result Limits Limit Batch B1G0588 - EPA 6010B Preparation: EPA 3050B 07/21/21 09:44 LCS Dup (B1G0588-BSDI) Analyzed: 07/21/21 14:48 Antimony 199 0.050 mg/kg 2.00 99 80-120 0.4 20 Arsenic 199 0.040 2.00 99 80-120 0 20 Barium 200 0 020 2.00 100 80-120 0.4 20 Beryllium 204 0 010 2.00 102 80-120 0.05 20 Cadmium 203 00050 2.00 102 80-120 0.1 20 Chromium 202 0 010 2.00 101 80-120 0.7 20 Cobalt 2.04 0 010 2.00 102 80-120 0.6 20 Copper 2.00 0.020 2.00 100 80-120 0.7 20 Lead 204 0.010 2.00 102 80-120 0.2 20 Molybdenum 1.98 0.010 2.00 99 80-120 0.2 20 Nickel 2.03 0.010 2.00 101 80-120 0.5 20 Selenium 196 0.040 2.00 98 80-120 0.9 20 Silver 0.101 0.010 0.100 101 80-120 0 20 Thallium 205 0.020 2.00 102 80-120 0 20 Vanadium 199 0.040 2.00 100 80-120 0.4 20 Zinc 203 0.040 2.00 102 80-120 0.1 20 Duplicate (B1G0588-DUPl) Source: 2104547-01 Analyzed: 07/21/21 14:53 Antimony ND 25 mg/kg ND 20 Arsenic 120 2.0 665 58 20 QR-04 Barium 871 0.99 150 53 20 QR-04 Beryllium ND 050 ND 20 Cadmium ND 025 ND 20 Chromium 139 050 154 10 20 Cobalt 13 1 050 15.6 18 20 Copper 23 1 099 21.4 8 20 Lead 475 050 3.41 33 20 QR-04 Molybdenum 144 0.50 359 86 20 QR-04 Nickel 202 0.50 197 3 20 Selenium ND 2.0 ND 20 Silver ND 0.50 ND 20 Thallium ND 0.99 " ND 20 Vanadium 43.8 2.0 45.2 3 20 Zinc 48.9 2.0 48.6 0.5 20 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirely. CA-ELAP 2438, TN102666 Client Connect: client.oec.comlreports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oecusa.com FAX: (805) 925-3376 Page 7 of / 5 6T�N Oilfield Environmental &Compliance, Inc. Geo Solutions Inc. Project: Geo Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 Analyte Result RL Units Spike Source %REC %REC RPD RPD Notes -Level— - Result — -Limits Limit Batch BlG0574 - EPA 8015M Preparation: EPA 5035/5030B Solid GC 07/20/21 15:20 Blank (B1G0574-BLKI) Analyzed: 07/20/21 17:08 TPH Gasoline (C5-C12) ND 050 mg/kg Surrogate:4-Bromofluorobenzene 0.131 110.125 105 39-157 LCS (111G0574-13SI) Analyzed: 07/20/21 16:16 TPH Gasoline (C5-C12) 1.07 050 mg/kg 0.990 108 68-139 Surrogate:4-Bromofluorobenzene 0.134 110.124 108 39-157 LCS Dup (B1G0574-BSDI) Analyzed. 07/20/21 16:42 TPH Gasoline (C5-C12) 107 0.50 mg/kg 0.994 108 68-139 0.6 20 Surrogate:4-Bromofluorobenzene 0.132 110.124 107 39-157 Duplicate (B1G0574-DUPI) Source: 2104547-01 Analyzed: 07/20/21 18:00 TPH Gasoline (C5-C12) ND 0.50 mg/kg ND 20 Surrogate:4-Bromofluorobenzene 0.134 110.124 108 39-157 Matrix Spike (B1G0574-MSl) Source: 2104586-01 Analyzed: 07/20/21 18:53 TPH Gasoline (C5-C 12) 1.02 0.49 mg/kg 0.980 ND 104 10-171 Surrogate:4-Bromofluorobenzene 0.131 " 0.123 107 39-157 Matrix Spike Dup (B1G0574-MSDI) Source: 2104586-01 Analyzed: 07/20/21 19:19 TPH Gasoline (C5-C12) 0 912 0.50 mg/kg 0.998 ND 91 10-171 11 20 Surrogate:4-Bromofluorobenzene 0.135 110.125 108 39-157 The results in this report apply to the samples analyzed in accordance with the chain ofcuslody document. This analytical report must be reproduced in its entirely. CA-ELAP 2438, TN102666 Client Connect: client.oec.com\reports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oecusa.com FAX: (805) 925-3376 Page 8 of 15 Oilfield Environmental &Compliance, Inc. Geo Solutions Inc. Project: Geo Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 Analyte Result RL Units Spike Source %REC %REC RPD RPD Notes Level Result Limits Limit Batch B1G0582 -EPA 8015M Preparation: EPA 3510C 07/21/21 09:21 Blank (B1G0582-BLKI) Analyzed: 07/21/21 10:13 TPH Diesel (C13-C22) ND 10 mg/kg TPH Motor Oil (C23-C40) ND 50 " Surrogate: o-Terphenyl 49.2 " 49.9 99 58-143 LCS (B1G0582-BSI) Analyzed: 07/21/21 10:13 TPH Diesel (C13-C22) 469 10 mg/kg 500 94 72-113 TPH Motor Oil (C23-C40) 471 50 500 94 72-120 Surrogate: o-Terphenyl 46.1 50.0 92 58-143 LCS Dup (B1G0582-BSDI) Analyzed: 07/21/21 10:36 TPH Diesel (C13-02) 470 9.9 mg/kg 497 95 72-113 02 20 TPH Motor Oil (C23-C40) 458 50 497 92 72-120 3 20 Surrogate: o-Terphenyl 45.3 49.7 91 58-143 Duplicate (BlG0582-DUPI) Source: 2104586-01 Analyzed: 07/21/21 10:36 TPH Diesel (C13-C22) ND 9.9 mg/kg ND 20 TPH Motor Oil (C23-C40) ND 50 ND 20 Surrogate: o-Terphenyl 49.7 49.6 100 58-143 Matrix Spike (B1G0582-MS1) Source: 2104586-01 Analyzed: 07/21/21 10:59 TPH Diesel (C13-C22) 465 10 mg/kg 499 ND 93 35-157 TPH Motor Oil (C23-C40) 463 50 499 ND 93 35-171 Surrogate: o-Terphenyl 48.0 49.9 96 58-143 Matrix Spike Dup (BIG0582-MSD1) Source: 2104586-01 Analyzed: 07/21/21 11:22 TPH Diesel (C13-02) 495 10 mg/kg 500 ND 99 35-157 6 20 TPH Motor Oil (C23-C40) 468 50 500 ND 94 35-171 1 20 Surrogate: o-Terphenyl 49.6 50.0 99 58-143 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. CA-ELAP 2438, TN102666 Client Connect: cIient.oec.comlreports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oecusa.com FAX: (805) 925-3376 Page 9of15 DTZPROilfield Environmental &Compliance, Inc. Geo Solutions Inc. Project: Geo Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 \11.6Ic Result RL Units Spike Source %REC %REC RPD RPD Notes Level Result- - Limits Limit Batch BIG0538 - EPA 8260B Preparation: EPA 5035/5030B Solid 07/20/21 09:00 Blank (B1G0538-BLKI) Analyzed: 07/20/21 10:22 Benzene ND 0.0050 mg/kg Ethylbenzene ND 0.0050 " Methyl-t-butyl ether ND 0,0050 " Toluene ND 0.0050 " Xylenes (total) ND 0,0050 " Surrogate: Dibromofluoromethane 0.0511 0.0498 103 74-122 Surrogate: Toluene-d8 0.0480 0.0498 96 65-128 Surrogate:4-Bromofluorobenzene 0.0494 0.0498 99 75-121 LCS (BIG0538-BS1) Analyzed: 07/20/21 09:29 Benzene 0.0417 0.0050 mg/kg 0.0398 105 70-131 Ethylbenzene 0.0427 0.0050 0.0398 107 68-136 Methyl-t-butyl ether 0.0389 0.0050 0.0398 98 10-167 Toluene 0.0419 0.0050 0.0398 105 72-128 Xylenes (total) 0.125 0.0050 0.119 105 69-138 Surrogate: Dibromofluoromeihane 0.0514 0.0497 103 74-122 Surrogate: Toluene-d8 0.0486 0.0497 98 65-128 Surrogate:4-Bromofluorobenzene 0.0512 0.0497 103 75-121 LCS Dup (BlG0538-BSDI) Analyzed: 07/20/21 09:56 Benzene 0.0431 0.0050 mg/kg 0.0397 109 70-131 3 20 Ethylbenzene 0.0429 0.0050 0.0397 108 68-136 0.6 20 Methyl-t-butyl ether 0.0404 0.0050 0.0397 102 10-167 4 20 Toluene 0.0430 0.0050 0.0397 108 72-128 3 20 Xylenes (total) 0.128 0.0050 0.119 108 69-138 2 20 Surrogate: Dibromofluoromethane 0.0516 0.0496 104 74-122 Surrogate: Toluene-d8 0.0495 0.0496 100 65-128 Surrogate:4-Bromofluorobenzene 0.0513 0.0496 104 75-121 Duplicate (B1G0538-DUPI) Source: 2104549-01 Analyzed: 07/20/21 11 42 Benzene ND 0.0050 mg/kg ND 20 Ethylbenzene ND 0.0050 ND 20 Methyl-t-butyl ether__ N1) 0.0050 Nn 20 Toluene ND 0.0050 ND 20 Xylenes (total) ND 0.0050 ND 20 Surrogate: Dibromofluoromethane 0.0505 0.0497 102 74-122 Surrogate: Toluene-d8 0.0485 0.0497 98 65-128 Surrogate:4-Bromofluorobenzene 0.0485 0.0497 98 75-121 The results in this report apply to the samples analyzed in accordance with the chain ofcusiody document. This analytical report must be reproduced in its entirety. CA-ELAP 2438, TN102666 Client Connect: client.oec.comlreports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oecusa.com FAX: (805) 925-3376 Page 10 of 15 limOilfield Environmental &Compliance, Inc. Geo Solutions Inc. Project: Geo Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 nalysis Method Matrix Laboratory & Certification Semi -Volatile Organic TPH by GC/FID 8015 Diesel & Motor Oil List EPA 8015M Solid OEC, Intemal 8015 Diesel & Motor Oil List EPA 8015M Solid OEC, CA-ELAP,NELAP Total Metals by CVAA Mercury Total EPA 7471A EPA 7471 A Solid OEC, Internal Total Metals by ICP 6010B Total Antimony EPA 601 OB Solid OEC, CA-ELAPNELAP 6010B Total Arsenic EPA 601 OB Solid OEC, CA-ELAPNELAP 6010B Total Barium EPA 601OB Solid OEC, CA-ELAPNELAP 6010B Total Beryllium EPA 6010B Solid OEC, CA-ELAPNELAP 601 OB Total Cadmium EPA 6010B Solid OEC, CA-ELAPNELAP 6010B Total Chromium EPA 6010B Solid OEC, CA-ELAPNELAP 601OB Total Cobalt EPA 601 OB Solid OEC, CA-ELAPNELAP 601OB Total Copper EPA 60IOB Solid OEC, CA-ELAPNELAP 601OB Total Lead EPA 6010B Solid OEC, CA-ELAPNELAP 601 OB Total Molybdenum EPA 6010B Solid OEC, CA-ELAP,NELAP 6010B Total Nickel EPA 601 OB Solid OEC, CA-ELAP,NELAP 6010B Total Selenium EPA 601 OB Solid OEC, CA-ELAPNELAP 6010B Total Silver EPA 601OB Solid OEC, CA-ELAPNELAP 6010B Total Thallium EPA 6010B Solid OEC, CA-ELAPNELAP 6010B Total Vanadium EPA 6010B Solid OEC, CA-ELAPNELAP 6010B Total Zinc EPA 6010B Solid OEC, CA-ELAPNELAP Volatile Organic Compounds by GUMS 8260B BTEX EPA 8260B Solid OEC, Intemal 8260B MTBE EPA 8260B Solid OEC, CA-ELAPNELAP Volatile Organic TPH by GC/FID 8015 TPH-Gasoline EPA 8015M Solid OEC, Intemal The results in this report apply to the samples analysed in accordance with the chain of custody document. This analytical report must be reproduced in its entirely. CA-ELAP 2438, TN102666 Client Connect: client.oec.comlreports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oecusa.com FAX (805) 925-3376 Page 11 of 15 C A tm Oilfield Environmental &Compliance, Inc. Geo Solutions Inc. Project: Gen Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 Qualifier ___Definition— _ MDL Method Detection Limit RL Reporting Limit (Quantitation Limit) ND Analyte NOT DETECTED at or above the method limit (MDL) RPD Relative Percent Difference N-02 Analyte concentration below TTLC but above 1 Ox STLC. N-03 Analyte concentration above 20x TCLP. QR-04 The RPD exceeded the QC wnhol limits. TMP3 Temperature [Out -Acceptable] Direct from Field The results in this report apply to the samples analysed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. CA-ELAP 2438, TN102666 Client Connect: cIient.oec.comlreports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oecusa.com FAX: (805) 925-3376 Page 12 of 15 Oilfield Environmental &Compliance, Inc. Geo Solutions Inc. Project: Geo Solutions WO & Reported: 220 High Street Project Number: 207 Higuera 2104547 San Luis Obispo CA, 93401 Project Manager: John Kammer 07/23/2021 16:56 The results in this report apply to the samples analy>ed in accordance with the chain of cusiody document. This analytical report must be reproduced in its entirety. CA-ELAP 2438, TN102666 Client Connect: client. oec.com\reports TEL: (805) 922-4772 307 Roemer Way, Santa Maria, CA 93454 www.oecusa.com FAX: (805) 925-3376 Page 13 of] 5 i y � vh i i i •J r�! E � .s CL e v E � � E N y U Q � Q v MR 2 N Coc . m gLU ;a ";, it 0 4 y EE EE E� E ❑ c v a E Elm M' m A' C El�n L .. d W LL Uj V N I ; Y ' 0-0 i 0, C1 E i ❑ C ❑ N ❑ � ! � i xY 5 / LL 0 d T N y fd E V M ❑ Z. a r co U Ca C N � F a m ,ST 1 m ; m .c y c o0. m a E Lu a c7i c; s � i ci a a x 0 Q f � CN 0 & 2 % 2 J�\ � ƒ / \ _ 00 \ \ f 2 2 ® § z z ) k b v < z z \ ■ ■ ■ ■ � ■ , a , � ■ � /Z00 $ } 7 a § CL = E * a I?GG_7% / $ _) 2 a 53\\§3 R k$ o o e CL \ _ �. Oo [¥ /k7 � $ ) a k © i 2 ) 0) A \ / w_ 2 co 2 ƒ £ \ ) 5 @Ec @ } 7 z O O c m§ p 2, D 2 )= =) @ D o£ o @ 2 © o E c 0 )2EE=�S� 2 /k 3\§f<E0a) ? « / $ ® _ 9 § 2 v o 2 G ° ) ) 0 4 k � ) \ § $ \ § S E ] S § $ 2i o E g G r$ § § £ ƒ J ƒ 3 G & v f ) \ } @ ! \ ` y § ) 3 ) $ ƒ 2 ■ O O O O ƒ ))( $ b 3 2 @ 0 3 3 f v On O o � CL / E 0 a) E m C O aum