Pismo Beach City Council
October 6, 2026

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Revision History[TOC_1]Revision History[
Reason for RevisionPrevious Report
Partial results.2603219 05/08/2026 15:39
Partial report, includes complete data from Weck sub lab.2603219 05/19/2026 17:28 Sample ID Laboratory ID Client Matrix Date Sampled
Sample Summary
Date Received
[TOC_1]Sample Summary[TOC]
Lab Matrix
EFF Comp 2603219-01 04/15/2026 07:00 04/15/2026 10:05WaterWater EFF Grab 2603219-02 04/15/2026 06:15 04/15/2026 10:05WaterWater Trip Blank 2603219-03 04/15/2026 00:00 04/15/2026 10:05WaterWater 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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:
[TOC_1]Sample Batch Preparation Summary[Sample Batch Preparation Summary Analysis Preparation Date/TimeBatch ID
*** DEFAULT GENERAL METHOD ***
1613 Dioxin/Furan (sub)
Bioassay Chronic (3-specie) NPDES toxicity (sub)
EPA 200.8 NPDES metals (sub)
Tributyltin (sub)
General Chemistry Parameters by EPA or APHA Standard Methods Ammonia as N 04/16/2026 08:23B6D0535
Ammonia as N 04/22/2026 08:22B6D0761
Chlorine, Total Residual 04/16/2026 16:21B6D0577
Cyanide, Total 04/19/2026 09:18B6D0648
Hexavalent Chromium by IC
Chromium, Hexavalent, AQ by EPA 218.6 04/22/2026 10:00B6D0668 Metals by EPA 200 Series Methods
Chromium III Aqueous, EPA 200.8/218.6 04/22/2026 10:00[CALC] Subcontract - EDB/DBCP by EPA Method 524.3
524.3 EDB, DBCP (Sub)
Subcontract - Extended Pesticides GC/ECD/ECD
8081A Extended Pesticide List (sub)
Subcontract - Pesticides and PCBs by GC/ECD/ECD
608 Pesticides & PCBs (sub)
Subcontract - Semi-Volatile Organic Compounds by GC/MS
625 SVOC CTR RL (sub)
Total Metals by ICP/MS
200.8 Total 04/20/2026 08:06B6D0655
Volatile Organic Compounds by EPA Method 624
624 Acrolein/Acrylonitrile CTR RL (sub)
624 VOCs-CTR RL (sub)
McCampbell Analytical, Inc.

E1613B
E1613B (PCDDs & PCDFs)04/23/2026 09:24340357
Weck Laboratories, Inc.

Acid and Base/Neutral Extractables by GC/MS
625.1 EPA_w BNA 04/21/2026 10:00W6D1355
Chlorinated Pesticides and/or PCBs by GC/ECD
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:
[TOC_1]Sample Batch Preparation Summary[Sample Batch Preparation Summary Analysis Preparation Date/TimeBatch ID
Chlorinated Pesticides and/or PCBs by GC/ECD (Continued) 608.3 EPA_w Toxic Rule 04/22/2026 08:05W6D1422
8081A EPA_w 04/21/2026 09:53W6D1349
Metals by EPA 200 Series Methods
200.8 EPA_w Ag 04/20/2026 15:33W6D1275
200.8 EPA_w As 04/20/2026 15:33W6D1275
200.8 EPA_w Be 04/20/2026 15:33W6D1275
200.8 EPA_w Cd 04/20/2026 15:33W6D1275
200.8 EPA_w Cr 04/20/2026 15:33W6D1275
200.8 EPA_w Cu 04/20/2026 15:33W6D1275
200.8 EPA_w Ni 04/20/2026 15:33W6D1275
200.8 EPA_w Pb 04/20/2026 15:33W6D1275
200.8 EPA_w Sb 04/20/2026 15:33W6D1275
200.8 EPA_w Se 04/20/2026 15:33W6D1275
200.8 EPA_w Tl 04/20/2026 15:33W6D1275
200.8 EPA_w Zn 04/20/2026 15:33W6D1275
245.1 EPA_w Hg 04/27/2026 09:28W6D1699
Organo Tin by GC/MS
6710B SM_w TBT 04/20/2026 08:56W6D1230
Volatile Organic Compounds by P&T and GC/MS
624.1 EPA_w ACR+ACNE 04/17/2026 07:31W6D1144
624.1 EPA_w Volatiles 04/17/2026 07:31W6D1144
Volatile Organics by P&T and GC/MS
524.3 EPA_w EDB+DBCP 04/20/2026 14:12W6D1288
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Analytical Report for Samples
[TOC_1]2603219-01 (Water)[TOC]
EFF Comp Sampled : 04/15/26 07:00
Lab ID : 2603219-01
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult [TOC_2]Hexavalent Chromium by IC[TOC]
Hexavalent Chromium by IC
ND EPA 218.604/22/26 16:06ug/L B6D06681Hexavalent Chromium 0.500.20 [TOC_2]Total Metals by ICP/MS[TOC]
Total Metals by ICP/MS
ND EPA 200.804/24/26 13:13mg/L B6D06551Chromium0.00300.0015 [TOC_2]Metals by EPA 200 Series Methods[TOC]
Metals by EPA 200 Series Methods
ND Calculation04/24/26 13:13mg/L [CALC]1Chromium III 0.000500.00020 [TOC_2]General Chemistry Parameters by EPA or APHA Standard Methods[TOC] General Chemistry Parameters by EPA or APHA Standard Methods SM 4500 NH3D0.32 B6D0535 04/16/26 08:30mg/L 1Ammonia as N 0.260.13 SM 4500CN-C/E0.012 B6D0648 04/19/26 09:30""Cyanide (total)0.040 J0.010 ND SM 4500-Cl G04/17/26 17:00ppmB6D0577"Residual Chlorine, Total 0.10 HT-CL0.050 McCampbell Analytical, Inc.
[TOC_2]E1613B[TOC]
E1613B
ND E1613B (PCDDs &
PCDFs)
05/06/26 16:33pg/L 34035712,3,7,8-TCDD 10.01.81
ND """""1,2,3,7,8-PeCDD 50.05.06
ND """""1,2,3,4,7,8-HxCDD 50.04.68
ND """""1,2,3,6,7,8-HxCDD 50.04.96
ND """""1,2,3,7,8,9-HxCDD 50.05.73
ND """""1,2,3,4,6,7,8-HpCDD 50.05.34
ND """""OCDD 10014.3
ND """""2,3,7,8-TCDF 10.01.34
ND """""1,2,3,7,8-PeCDF 50.04.39
ND """""2,3,4,7,8-PeCDF 50.03.34
ND """""1,2,3,4,7,8-HxCDF 50.03.91
ND """""1,2,3,6,7,8-HxCDF 50.04.01
ND """""1,2,3,7,8,9-HxCDF 50.04.58
ND """""2,3,4,6,7,8-HxCDF 50.03.53
ND """""1,2,3,4,6,7,8-HpCDF 50.04.20
ND """""1,2,3,4,7,8,9-HpCDF 50.05.44
ND """""OCDF 10014.3
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Analytical Report for Samples
EFF Comp Sampled : 04/15/26 07:00
Lab ID : 2603219-01
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult E1613B (Continued)
ND E1613B (PCDDs &
PCDFs)
05/06/26 16:33pg/L 3403571Total-Tetradioxins 10.01.81
ND """""Total-Pentadioxins 50.05.06
ND """""Total-Hexadioxins 50.05.73
ND """""Total-Heptadioxins 50.05.34
"21.2 """"Total-Tetrafurans 10.0 M1.34
"6.68 """"Total-Pentafurans 50.0 Jb, M4.39
ND """""Total-Hexafurans 50.04.58
ND """""Total-Heptafurans 50.05.44
"27.9 """"Total PCDD+PCDF 10.0 Jb
"""( 35 - 197 )89 %Surrogate: 37Cl-2,3,7,8-TCDD
Weck Laboratories, Inc.

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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Analytical Report for Samples
EFF Comp Sampled : 04/15/26 07:00
Lab ID : 2603219-01
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult Weck Laboratories, Inc.
[TOC_2]Acid and Base/Neutral Extractables by GC/MS[TOC] Acid and Base/Neutral Extractables by GC/MS
ND EPA 625.105/01/26 23:45ug/l W6D13552N-Nitrosodimethylamine 2.0 M-040.48 ND """""Phenol 2.0 M-040.28
ND """""Bis(2-chloroethyl)ether 2.0 M-040.54
ND """""2-Chlorophenol 2.0 M-040.26
ND """""1,3-Dichlorobenzene 2.0 M-040.84
ND """""1,4-Dichlorobenzene 2.0 M-040.96
ND """""1,2-Dichlorobenzene 2.0 M-040.92
ND """""Bis(2-chloroisopropyl) ether 2.0 M-040.38
ND """""N-Nitrosodi-n-propylamine 2.0 M-040.52
ND """""Hexachloroethane 2.0 M-041.0
ND """""Nitrobenzene 2.0 M-040.72
ND """""Isophorone 2.0 M-040.42
ND """""2-Nitrophenol 2.0 M-040.52
ND """""2,4-Dimethylphenol 2.0 M-041.5
ND """""Bis(2-chloroethoxy)methane 2.0 M-040.50
"0.57 """"2,4-Dichlorophenol 2.0 B-06,
M-04,
Ja

0.52 ND """""1,2,4-Trichlorobenzene 2.0 M-040.48
ND """""Naphthalene 2.0 M-040.48
ND """""Hexachlorobutadiene 2.0 M-040.94
ND """""4-Chloro-3-methylphenol 2.0 M-040.46
ND """""Hexachlorocyclopentadiene 10 M-043.0
ND """""2,4,6-Trichlorophenol 2.0 M-040.44
ND """""2-Chloronaphthalene 2.0 M-040.38
ND """""Dimethyl phthalate 2.0 M-040.36
ND """""2,6-Dinitrotoluene 2.0 BS-04,
M-04

0.54 ND """""Acenaphthylene 2.0 M-040.70
ND """""Acenaphthene 2.0 M-040.30
ND """""2,4-Dinitrophenol 20 M-048.9
ND """""4-Nitrophenol 10 M-040.84
ND """""2,4-Dinitrotoluene 2.0 M-040.92
ND """""Diethyl phthalate 2.0 M-040.34
ND """""4-Chlorophenyl phenyl ether 2.0 M-040.34
ND """""Fluorene 2.0 M-040.28
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Analytical Report for Samples
EFF Comp Sampled : 04/15/26 07:00
Lab ID : 2603219-01
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult Acid and Base/Neutral Extractables by GC/MS (Continued) ND EPA 625.105/01/26 23:45ug/l W6D135522-Methyl-4,6-dinitrophenol 10 M-042.3 ND """""N-Nitrosodiphenylamine 2.0 M-040.38
ND """""1,2-Diphenylhydrazine/Azobenzene 2.0 M-040.60
ND """""4-Bromophenyl phenyl ether 2.0 M-040.72
ND """""Hexachlorobenzene 2.0 M-040.48
ND """""Pentachlorophenol 2.0 M-040.80
ND """""Phenanthrene 2.0 M-040.64
ND """""Anthracene 2.0 M-040.40
ND """""Di-n-butyl phthalate 2.0 M-040.68
ND """""Fluoranthene 2.0 M-040.69
ND """""Benzidine 20 M-046.4
ND """""Pyrene 2.0 M-040.50
ND """""Butyl benzyl phthalate 2.0 M-040.98
ND """""3,3'-Dichlorobenzidine 10 M-045.0
ND """""Bis(2-ethylhexyl)phthalate 10 M-044.6
ND """""Benzo (a) anthracene 2.0 M-040.92
ND """""Chrysene 2.0 M-040.38
ND """""Di-n-octyl phthalate 2.0 M-040.92
ND """""Benzo (b) fluoranthene 2.0 M-040.92
ND """""Benzo (k) fluoranthene 2.0 M-040.48
ND """""Benzo (a) pyrene 2.0 M-040.56
ND """""Indeno (1,2,3-cd) pyrene 4.0 M-041.3
ND """""Dibenzo (a,h) anthracene 4.0 M-041.2
ND """""Benzo (g,h,i) perylene 4.0 M-040.84
"""( 17 - 120 )43 %Surrogate: 2-Fluorophenol
"""( 12 - 120 )31 %Surrogate: Phenol-d5
"""( 47 - 120 )87 %Surrogate: Nitrobenzene-d5
"""( 22 - 120 )84 %Surrogate: 2-Fluorobiphenyl
"""( 25 - 120 )90 %Surrogate: 2,4,6-Tribromophenol
"""( 44 - 129 )84 %Surrogate: Terphenyl-d14
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Analytical Report for Samples
EFF Comp Sampled : 04/15/26 07:00
Lab ID : 2603219-01
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult [TOC_2]Chlorinated Pesticides and/or PCBs by GC/ECD[TOC] Chlorinated Pesticides and/or PCBs by GC/ECD
ND EPA 608.305/07/26 03:49ug/l W6D14221Aldrin0.00500.0031 ND """""alpha-BHC 0.010 R-010.010
ND """""beta-BHC 0.010 R-010.010
ND """""delta-BHC 0.010 R-010.010
ND """""gamma-BHC (Lindane)0.020 R-010.020
ND """""4,4´-DDD 0.0500.0027
ND """""4,4´-DDE 0.0500.0037
ND """""4,4´-DDT 0.010 R-010.010
ND """""Dieldrin 0.010 R-010.010
ND """""Endosulfan I 0.020 R-010.020
ND """""Endosulfan II 0.010 R-010.010
ND """""Endosulfan sulfate 0.0500.0029
ND """""Endrin 0.010 R-010.010
ND """""Endrin aldehyde 0.010 R-010.010
ND """""Heptachlor 0.010 R-010.010
ND """""Heptachlor epoxide 0.010 R-010.010
ND """""Toxaphene 2.0 R-012.0
ND """""Chlordane (tech)0.50 R-010.50
ND """""Aroclor 1016 2.0 R-012.0
ND """""Aroclor 1221 2.0 R-012.0
ND """""Aroclor 1232 2.0 R-012.0
ND """""Aroclor 1242 2.0 R-012.0
ND """""Aroclor 1248 2.0 R-012.0
ND """""Aroclor 1254 2.0 R-012.0
ND """""Aroclor 1260 2.0 R-012.0
ND EPA 8081A04/29/26 10:13"W6D1349"2,4'-DDT 0.0500.0082 ND """""2,4'-DDE 0.0500.0074
ND """""2,4'-DDD 0.0500.013
EPA 608.3W6D142205/07/26 03:49( 32 - 130 )49 %Surrogate: Tetrachloro-meta-xylene EPA 8081AW6D134904/29/26 10:13( 10 - 137 )62 %Surrogate: Tetrachloro-meta-xylene EPA 608.3W6D142205/07/26 03:49( 33 - 133 )77 %Surrogate: Decachlorobiphenyl EPA 8081AW6D134904/29/26 10:13( 10 - 123 )70 %Surrogate: Decachlorobiphenyl 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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Analytical Report for Samples
EFF Comp Sampled : 04/15/26 07:00
Lab ID : 2603219-01
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult [TOC_2]Metals by EPA 200 Series Methods[TOC]
Metals by EPA 200 Series Methods
ND EPA 245.104/29/26 14:01ug/l W6D16991Mercury, Total 0.0500.037 EPA 200.80.49 W6D1275 04/23/26 16:32""Antimony, Total 0.50 Ja0.089 "2.4 """"Arsenic, Total 0.400.074
ND """""Beryllium, Total 0.100.029
ND """""Cadmium, Total 0.200.042
"0.29 """"Chromium, Total 0.200.089
"2.4 """"Copper, Total 0.500.23
ND """""Lead, Total 0.200.083
"2.4 """"Nickel, Total 2.00.40
"0.31 """"Selenium, Total 0.40 Ja0.067
ND """""Silver, Total 0.200.059
ND """""Thallium, Total 0.200.021
"18 """"Zinc, Total 101.7
[TOC_2]Organo Tin by GC/MS[TOC]
Organo Tin by GC/MS
ND SM 6710B05/04/26 00:00ug/l W6D12301Tri-n-butyltin 0.00500.0023 """( 43 - 179 )120 %Surrogate: Tripentyltin
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Analytical Report for Samples
EFF Comp Sampled : 04/15/26 07:00
Lab ID : 2603219-01
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult [TOC_2]Volatile Organic Compounds by P&T and GC/MS[TOC] Volatile Organic Compounds by P&T and GC/MS
ND EPA 624.104/18/26 12:48ug/l W6D11441Acrolein5.01.2
ND """""Chloromethane 1.00.59
ND """""Acrylonitrile 2.00.63
ND """""Vinyl chloride 1.00.31
ND """""Bromomethane 1.00.31
ND """""Chloroethane 1.00.38
ND """""Trichlorofluoromethane 1.00.45
ND """""1,1-Dichloroethene 1.00.39
ND """""Methylene chloride 1.00.39
ND """""trans-1,2-Dichloroethene 1.00.27
ND """""1,1-Dichloroethane 1.00.32
"30 """"Chloroform 1.00.28
ND """""1,1,1-Trichloroethane 1.00.30
ND """""Carbon tetrachloride 1.00.28
ND """""Benzene 1.00.22
ND """""1,2-Dichloroethane 1.00.26
ND """""Trichloroethene 1.00.34
ND """""1,2-Dichloropropane 1.00.36
"17 """"Bromodichloromethane 1.00.18
ND """""2-Chloroethyl vinyl ether 5.0 A-010.59
ND """""cis-1,3-Dichloropropene 1.00.36
"0.58 """"Toluene 1.0 Ja0.32
ND """""trans-1,3-Dichloropropene 1.00.33
ND """""1,1,2-Trichloroethane 1.00.32
ND """""Tetrachloroethene 1.00.42
"5.5 """"Dibromochloromethane 1.00.35
ND """""Chlorobenzene 1.00.23
ND """""Ethylbenzene 1.00.41
"0.54 """"Bromoform 1.0 Ja0.27
ND """""1,1,2,2-Tetrachloroethane 1.00.38
ND """""m-Dichlorobenzene 1.00.39
ND """""p-Dichlorobenzene 1.00.19
ND """""o-Dichlorobenzene 1.00.16
ND """""Acrolein 5.0 A-01,
O-04

1.2 ND """""Acrylonitrile 2.00.63
ND """""1,3-Dichloropropene, Total 1.0
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Analytical Report for Samples
EFF Comp Sampled : 04/15/26 07:00
Lab ID : 2603219-01
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult Volatile Organic Compounds by P&T and GC/MS (Continued) ND EPA 624.104/18/26 12:48ug/l W6D11441Dichlorodifluoromethane (Freon 12)1.00.30 ND """""Methyl tert-butyl ether (MTBE)1.00.40
ND """""m,p-Xylene 1.00.29
ND """""o-Xylene 1.00.29
"""( 82 - 125 )103 %Surrogate: 1,2-Dichloroethane-d4
"""( 88 - 108 )98 %Surrogate: 4-Bromofluorobenzene
"""( 92 - 112 )105 %Surrogate: Toluene-d8
"""( 82 - 125 )103 %Surrogate: 1,2-Dichloroethane-d4
"""( 88 - 108 )98 %Surrogate: 4-Bromofluorobenzene
"""( 92 - 112 )105 %Surrogate: Toluene-d8
[TOC_1]2603219-02 (Water)[TOC]
EFF Grab Sampled : 04/15/26 06:15
Lab ID : 2603219-02
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult Oilfield Environmental & Compliance, Inc.
[TOC_2]General Chemistry Parameters by EPA or APHA Standard Methods[TOC] General Chemistry Parameters by EPA or APHA Standard Methods SM 4500 NH3D0.26 B6D0761 04/22/26 08:30mg/L 1Ammonia as N 0.26 J0.13 Weck Laboratories, Inc.
[TOC_2]Volatile Organics by P&T and GC/MS[TOC]
Volatile Organics by P&T and GC/MS
ND EPA 524.304/21/26 04:06ug/l W6D128811,2-Dibromoethane (EDB)0.0200.0029 ND """""1,2-Dibromo-3-chloropropane 0.0100.0042
"""( 70 - 130 )101 %Surrogate: 4-Bromofluorobenzene
"""( 70 - 130 )104 %Surrogate: 1,2-Dichlorobenzene-d4
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Analytical Report for Samples
[TOC_1]2603219-03 (Water)[TOC]
Trip Blank Sampled : 04/15/26 00:00
Lab ID : 2603219-03
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult Volatile Organics by P&T and GC/MS
ND EPA 524.304/21/26 04:30ug/l W6D128811,2-Dibromoethane (EDB)0.0200.0029 ND """""1,2-Dibromo-3-chloropropane 0.0100.0042
"""( 70 - 130 )97 %Surrogate: 4-Bromofluorobenzene
"""( 70 - 130 )99 %Surrogate: 1,2-Dichlorobenzene-d4
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Hexavalent Chromium by IC - Quality Control[TOC_1]Hexavalent Chromium by IC - Quality Control[ Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch B6D0668 - EPA 300.0/300.1 Anions Prep[TOC] Batch B6D0668 - EPA 218.6 Preparation: EPA 300.0/300.1 Anions Prep 04/22/26 10:00 Blank (B6D0668-BLK1)
[TOC_3]Blank (B6D0668-BLK1)[TOC]
Analyzed: 04/22/26 14:48
Hexavalent Chromium ug/LND0.500.20
LCS (B6D0668-BS1)
[TOC_3]LCS (B6D0668-BS1)[TOC]
Analyzed: 04/22/26 14:09
Hexavalent Chromium ug/L5.24 0.50 5.00 90-1101050.20
LCS Dup (B6D0668-BSD1)
[TOC_3]LCS Dup (B6D0668-BSD1)[TOC]
Analyzed: 04/22/26 14:22
Hexavalent Chromium ug/L5.13 0.50 5.00 1590-110103 20.20 Duplicate (B6D0668-DUP1)Source: 2603301-01
[TOC_3]Duplicate (B6D0668-DUP1)[TOC]
Analyzed: 04/22/26 15:14
Hexavalent Chromium ug/LND0.50 ND 150.20
Matrix Spike (B6D0668-MS1)Source: 2603301-01
[TOC_3]Matrix Spike (B6D0668-MS1)[TOC]
Analyzed: 04/22/26 15:01
Hexavalent Chromium ug/L5.34 0.50 5.00 ND 90-1101070.20 Matrix Spike (B6D0668-MS2)Source: 2603127-04RE1 Analyzed: 04/22/26 20:51 Hexavalent Chromium ug/L9.41 1.0 10.0 ND 90-110940.40
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Total Metals by ICP/MS - Quality Control[TOC_1]
Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch B6D0655 - EPA 200.8[TOC]
Batch B6D0655 - EPA 200.8 Preparation: EPA 200.8 04/20/26 08:06 Blank (B6D0655-BLK1)
[TOC_3]Blank (B6D0655-BLK1)[TOC]
Analyzed: 04/24/26 10:48
Chromium mg/LND0.00300.0015
LCS (B6D0655-BS1)
[TOC_3]LCS (B6D0655-BS1)[TOC]
Analyzed: 04/24/26 10:58
Chromium mg/L0.0414 0.0030 0.0400 85-1151030.0015
LCS Dup (B6D0655-BSD1)
[TOC_3]LCS Dup (B6D0655-BSD1)[TOC]
Analyzed: 04/24/26 11:04
Chromium mg/L0.0407 0.0030 0.0400 2085-115102 20.0015
Duplicate (B6D0655-DUP1)Source: 2603047-01
[TOC_3]Duplicate (B6D0655-DUP1)[TOC]
Analyzed: 04/24/26 12:50
Chromium mg/L0.00755 0.0030 ND 200.0015
Matrix Spike (B6D0655-MS1)Source: 2603047-01
[TOC_3]Matrix Spike (B6D0655-MS1)[TOC]
Analyzed: 04/24/26 12:34
Chromium mg/L0.0394 0.0030 0.0400 ND 70-130980.0015
Matrix Spike (B6D0655-MS2)Source: 2603069-08 Analyzed: 04/24/26 12:42 Chromium mg/L0.0466 0.0030 0.0400 0.00546 70-1301030.0015 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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

General Chemistry Parameters by EPA or APHA Standard Methods - Quality Control[TOC_1]General Chemistry Parameters by E Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch B6D0535 - Wetchem default method[TOC]
Batch B6D0535 - SM 4500 NH3D Preparation: Wetchem default method 04/16/26 08:23 Blank (B6D0535-BLK1)
[TOC_3]Blank (B6D0535-BLK1)[TOC]
Analyzed: 04/16/26 08:30
Ammonia as N mg/LND0.260.13
LCS (B6D0535-BS1)
[TOC_3]LCS (B6D0535-BS1)[TOC]
Analyzed: 04/16/26 08:30
Ammonia as N mg/L17.4 0.26 20.0 80-120870.13
LCS Dup (B6D0535-BSD1)
[TOC_3]LCS Dup (B6D0535-BSD1)[TOC]
Analyzed: 04/16/26 08:30
Ammonia as N mg/L17.5 0.26 20.0 2080-12088 0.80.13
Duplicate (B6D0535-DUP1)Source: 2603135-01
[TOC_3]Duplicate (B6D0535-DUP1)[TOC]
Analyzed: 04/16/26 08:30
Ammonia as N mg/L23.3 0.26 23.1 200.80.13
Matrix Spike (B6D0535-MS1)Source: 2603135-01
[TOC_3]Matrix Spike (B6D0535-MS1)[TOC]
Analyzed: 04/16/26 08:30
Ammonia as N mg/L40.0 0.26 20.0 23.1 80-120840.13
Matrix Spike Dup (B6D0535-MSD1)Source: 2603135-01
[TOC_3]Matrix Spike Dup (B6D0535-MSD1)[TOC]
Analyzed: 04/16/26 08:30
Ammonia as N mg/L40.3 0.26 20.0 23.1 2080-12086 0.80.13 [TOC_2]Batch B6D0577 - Wetchem default method[TOC]
Batch B6D0577 - SM 4500-Cl G Preparation: Wetchem default method 04/16/26 16:21 Blank (B6D0577-BLK1)
[TOC_3]Blank (B6D0577-BLK1)[TOC]
Analyzed: 04/17/26 17:00
Residual Chlorine, Total ppmND0.100.050
LCS (B6D0577-BS1)
[TOC_3]LCS (B6D0577-BS1)[TOC]
Analyzed: 04/17/26 17:00
Residual Chlorine, Total ppm0.520 0.10 0.502 85-1151040.050 Duplicate (B6D0577-DUP1)Source: 2603082-01
[TOC_3]Duplicate (B6D0577-DUP1)[TOC]
Analyzed: 04/17/26 17:00
Residual Chlorine, Total ppm0.820 0.20 0.840 2020.10
[TOC_2]Batch B6D0648 - Wetchem default method[TOC]
Batch B6D0648 - SM 4500CN-C/E Preparation: Wetchem default method 04/19/26 09:18 Blank (B6D0648-BLK1)
[TOC_3]Blank (B6D0648-BLK1)[TOC]
Analyzed: 04/19/26 09:30
Cyanide (total)mg/LND0.0400.010
LCS (B6D0648-BS1)
[TOC_3]LCS (B6D0648-BS1)[TOC]
Analyzed: 04/19/26 09:30
Cyanide (total)mg/L0.116 0.040 0.100 80-1201160.010
LCS Dup (B6D0648-BSD1)
[TOC_3]LCS Dup (B6D0648-BSD1)[TOC]
Analyzed: 04/19/26 09:30
Cyanide (total)mg/L0.128 0.040 0.100 20 QM-0980-120128 100.010 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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

General Chemistry Parameters by EPA or APHA Standard Methods - Quality Control Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch B6D0648 - SM 4500CN-C/E Preparation: Wetchem default method 04/19/26 09:18 Duplicate (B6D0648-DUP1)Source: 2603219-01
[TOC_3]Duplicate (B6D0648-DUP1)[TOC]
Analyzed: 04/19/26 09:30
Cyanide (total)mg/LND0.040 0.0115 200.010
Matrix Spike (B6D0648-MS1)Source: 2603219-01
[TOC_3]Matrix Spike (B6D0648-MS1)[TOC]
Analyzed: 04/19/26 09:30
Cyanide (total)mg/L0.0679 0.040 0.100 0.0115 QM-0780-120560.010 Matrix Spike Dup (B6D0648-MSD1)Source: 2603219-01
[TOC_3]Matrix Spike Dup (B6D0648-MSD1)[TOC]
Analyzed: 04/19/26 09:30
Cyanide (total)mg/L0.0699 0.040 0.100 0.0115 20 QM-0780-12058 30.010 [TOC_2]Batch B6D0761 - Wetchem default method[TOC]
Batch B6D0761 - SM 4500 NH3D Preparation: Wetchem default method 04/22/26 08:22 Blank (B6D0761-BLK1)
[TOC_3]Blank (B6D0761-BLK1)[TOC]
Analyzed: 04/22/26 08:30
Ammonia as N mg/LND0.260.13
LCS (B6D0761-BS1)
[TOC_3]LCS (B6D0761-BS1)[TOC]
Analyzed: 04/22/26 08:30
Ammonia as N mg/L16.0 0.26 20.0 80-120800.13
LCS Dup (B6D0761-BSD1)
[TOC_3]LCS Dup (B6D0761-BSD1)[TOC]
Analyzed: 04/22/26 08:30
Ammonia as N mg/L16.8 0.26 20.0 2080-12084 50.13
Duplicate (B6D0761-DUP1)Source: 2603333-02
[TOC_3]Duplicate (B6D0761-DUP1)[TOC]
Analyzed: 04/22/26 08:30
Ammonia as N mg/L0.929 0.26 1.16 20 QR-03220.13
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Acid and Base/Neutral Extractables by GC/MS - Quality Control[TOC_1]Acid and Base/Neutral Extractables by GC/MS - Quality Control[ Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch W6D1355 - EPA 625#LLSF[TOC]
Batch W6D1355 - EPA 625.1 Preparation: EPA 625#LLSF 04/21/26 10:00 Blank (W6D1355-BLK1)
[TOC_3]Blank (W6D1355-BLK1)[TOC]
Analyzed: 05/01/26 18:22
N-Nitrosodimethylamine ug/l0.363 1.0 B-02, Ja0.24
Phenol "0.364 1.0 B-02, Ja0.14
Bis(2-chloroethyl)ether "1.05 1.0 B-060.27
2-Chlorophenol "0.991 1.0 B-02, Ja0.13
1,3-Dichlorobenzene "1.05 1.0 B-060.42
1,4-Dichlorobenzene "0.968 1.0 B-02, Ja0.48
1,2-Dichlorobenzene "1.00 1.0 B-060.46
Bis(2-chloroisopropyl) ether "1.03 1.0 B-060.19
N-Nitrosodi-n-propylamine "1.62 1.0 B-060.26
Hexachloroethane "0.972 1.0 B-02, Ja0.50
Nitrobenzene "1.16 1.0 B-060.36
Isophorone "1.02 1.0 B-060.21
2-Nitrophenol "1.14 1.0 B-060.26
2,4-Dimethylphenol "0.862 1.0 B-02, Ja0.76
Bis(2-chloroethoxy)methane "1.09 1.0 B-060.25
2,4-Dichlorophenol "1.04 1.0 B-060.26
1,2,4-Trichlorobenzene "0.995 1.0 B-02, Ja0.24
Naphthalene "1.02 1.0 B-060.24
Hexachlorobutadiene "1.04 1.0 B-060.47
4-Chloro-3-methylphenol "1.29 1.0 B-060.23
Hexachlorocyclopentadiene "ND 5.01.5
2,4,6-Trichlorophenol "1.12 1.0 B-060.22
2-Chloronaphthalene "0.991 1.0 B-02, Ja0.19
Dimethyl phthalate "1.14 1.0 B-060.18
2,6-Dinitrotoluene "0.900 1.0 B-02, Ja0.27
Acenaphthylene "1.06 1.0 B-060.35
Acenaphthene "1.15 1.0 B-060.15
2,4-Dinitrophenol "ND 104.4
4-Nitrophenol "ND 5.00.42
2,4-Dinitrotoluene "0.981 1.0 B-02, Ja0.46
Diethyl phthalate "1.35 1.0 B-060.17
4-Chlorophenyl phenyl ether "1.17 1.0 B-060.17
Fluorene "1.10 1.0 B-060.14
2-Methyl-4,6-dinitrophenol "1.35 5.0 Ja1.1
N-Nitrosodiphenylamine "0.917 1.0 B-02, Ja0.19
1,2-Diphenylhydrazine/Azobenzene "ND 1.00.30
4-Bromophenyl phenyl ether "1.20 1.0 B-060.36
Hexachlorobenzene "1.12 1.0 B-060.24
Pentachlorophenol "1.45 1.0 B-060.40
Phenanthrene "1.13 1.0 B-060.32
Anthracene "1.15 1.0 B-060.20
Di-n-butyl phthalate "1.50 1.0 B-060.34
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Acid and Base/Neutral Extractables by GC/MS - Quality Control Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1355 - EPA 625.1 Preparation: EPA 625#LLSF 04/21/26 10:00 Blank (W6D1355-BLK1)Analyzed: 05/01/26 18:22
Fluoranthene ug/l1.26 1.0 B-060.35
Benzidine "ND 103.2
Pyrene "1.23 1.0 B-060.25
Butyl benzyl phthalate "1.69 1.0 B-060.49
3,3'-Dichlorobenzidine "ND 5.02.5
Bis(2-ethylhexyl)phthalate "ND 5.02.3
Benzo (a) anthracene "1.17 1.0 B-060.46
Chrysene "1.30 1.0 B-060.19
Di-n-octyl phthalate "1.87 1.0 B-060.46
Benzo (b) fluoranthene "1.26 1.0 B-06,
AN-IP

0.46 Benzo (k) fluoranthene "1.19 1.0 B-06,
AN-IP

0.24 Benzo (a) pyrene "1.23 1.0 B-060.28
Indeno (1,2,3-cd) pyrene "1.36 2.0 B-02, Ja0.66
Dibenzo (a,h) anthracene "1.12 2.0 B-02, Ja0.60
Benzo (g,h,i) perylene "1.03 2.0 B-02, Ja0.42
"40.0 17-120Surrogate: 2-Fluorophenol 5923.5
"40.0 12-120Surrogate: Phenol-d5 3514.1
"20.0 47-120Surrogate: Nitrobenzene-d5 8917.8
"20.0 22-120Surrogate: 2-Fluorobiphenyl 8316.6
"40.0 25-120Surrogate: 2,4,6-Tribromophenol 8835.3
"20.0 44-129Surrogate: Terphenyl-d14 9819.6
LCS (W6D1355-BS1)
[TOC_3]LCS (W6D1355-BS1)[TOC]
Analyzed: 05/01/26 17:23
N-Nitrosodimethylamine ug/l9.27 1.0 20.0 22-120460.24
Phenol "5.83 1.0 20.0 17-120290.14
Bis(2-chloroethyl)ether "16.8 1.0 20.0 43-126840.27
2-Chlorophenol "15.6 1.0 20.0 36-120780.13
1,3-Dichlorobenzene "15.5 1.0 20.0 55-120770.42
1,4-Dichlorobenzene "15.7 1.0 20.0 55-120790.48
1,2-Dichlorobenzene "17.4 1.0 20.0 57-120870.46
Bis(2-chloroisopropyl) ether "17.9 1.0 20.0 63-139900.19 N-Nitrosodi-n-propylamine "17.1 1.0 20.0 14-198850.26
Hexachloroethane "15.3 1.0 20.0 55-120770.50
Nitrobenzene "16.0 1.0 20.0 54-158800.36
Isophorone "16.2 1.0 20.0 47-180810.21
2-Nitrophenol "17.5 1.0 20.0 45-167880.26
2,4-Dimethylphenol "11.7 1.0 20.0 42-120580.76
Bis(2-chloroethoxy)methane "16.8 1.0 20.0 49-165840.25
2,4-Dichlorophenol "16.5 1.0 20.0 53-122830.26
1,2,4-Trichlorobenzene "15.8 1.0 20.0 57-130790.24
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Acid and Base/Neutral Extractables by GC/MS - Quality Control Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1355 - EPA 625.1 Preparation: EPA 625#LLSF 04/21/26 10:00 LCS (W6D1355-BS1)Analyzed: 05/01/26 17:23
Naphthalene ug/l16.6 1.0 20.0 36-120830.24
Hexachlorobutadiene "17.2 1.0 20.0 38-120860.47
4-Chloro-3-methylphenol "17.3 1.0 20.0 41-128870.23
Hexachlorocyclopentadiene "13.6 5.0 20.0 10-120681.5
2,4,6-Trichlorophenol "17.6 1.0 20.0 52-129880.22
2-Chloronaphthalene "16.7 1.0 20.0 65-120830.19
Dimethyl phthalate "21.4 1.0 20.0 0.1-1201070.18
2,6-Dinitrotoluene "18.0 1.0 20.0 68-137900.27
Acenaphthylene "17.3 1.0 20.0 54-126860.35
Acenaphthene "17.7 1.0 20.0 60-132880.15
2,4-Dinitrophenol "20.1 10 20.0 0.1-1731014.4
4-Nitrophenol "7.62 5.0 20.0 13-129380.42
2,4-Dinitrotoluene "19.0 1.0 20.0 48-127950.46
Diethyl phthalate "20.2 1.0 20.0 0.1-1201010.17
4-Chlorophenyl phenyl ether "19.1 1.0 20.0 38-145960.17 Fluorene "17.9 1.0 20.0 70-120890.14
2-Methyl-4,6-dinitrophenol "22.3 5.0 20.0 53-1301121.1
N-Nitrosodiphenylamine "15.4 1.0 20.0 47-120770.19
4-Bromophenyl phenyl ether "19.2 1.0 20.0 65-120960.36
Hexachlorobenzene "17.8 1.0 20.0 8-142890.24
Pentachlorophenol "19.9 1.0 20.0 41-1201000.40
Phenanthrene "15.4 1.0 20.0 65-120770.32
Anthracene "18.7 1.0 20.0 43-120940.20
Di-n-butyl phthalate "20.3 1.0 20.0 8-1201020.34
Fluoranthene "18.1 1.0 20.0 43-121910.35
Pyrene "17.7 1.0 20.0 70-120880.25
Butyl benzyl phthalate "20.2 1.0 20.0 0.1-1401010.49
3,3'-Dichlorobenzidine "11.1 5.0 20.0 8-213562.5
Bis(2-ethylhexyl)phthalate "19.5 5.0 20.0 29-137972.3
Benzo (a) anthracene "16.6 1.0 20.0 42-133830.46
Chrysene "19.5 1.0 20.0 44-140980.19
Di-n-octyl phthalate "24.4 1.0 20.0 19-1321220.46
Benzo (b) fluoranthene "19.1 1.0 20.0 AN-IP42-140960.46 Benzo (k) fluoranthene "17.9 1.0 20.0 AN-IP25-146900.24 Benzo (a) pyrene "17.7 1.0 20.0 32-148890.28
Indeno (1,2,3-cd) pyrene "19.7 2.0 20.0 0.1-151990.66
Dibenzo (a,h) anthracene "18.2 2.0 20.0 0.1-200910.60
Benzo (g,h,i) perylene "18.2 2.0 20.0 0.1-195910.42
"40.0 17-120Surrogate: 2-Fluorophenol 5120.6
"40.0 12-120Surrogate: Phenol-d5 3313.3
"20.0 47-120Surrogate: Nitrobenzene-d5 8517.0
"20.0 22-120Surrogate: 2-Fluorobiphenyl 8216.5
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Acid and Base/Neutral Extractables by GC/MS - Quality Control Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1355 - EPA 625.1 Preparation: EPA 625#LLSF 04/21/26 10:00 LCS (W6D1355-BS1)Analyzed: 05/01/26 17:23
ug/l 40.0 25-120Surrogate: 2,4,6-Tribromophenol 8734.9
"20.0 44-129Surrogate: Terphenyl-d14 8717.5
LCS Dup (W6D1355-BSD1)
[TOC_3]LCS Dup (W6D1355-BSD1)[TOC]
Analyzed: 05/01/26 17:53
N-Nitrosodimethylamine ug/l7.86 1.0 20.0 3022-12039 160.24 Phenol "5.15 1.0 20.0 3017-12026 130.14
Bis(2-chloroethyl)ether "14.3 1.0 20.0 3043-12672 160.27 2-Chlorophenol "13.5 1.0 20.0 3036-12067 150.13
1,3-Dichlorobenzene "13.3 1.0 20.0 3055-12066 150.42
1,4-Dichlorobenzene "13.6 1.0 20.0 3055-12068 140.48
1,2-Dichlorobenzene "14.8 1.0 20.0 3057-12074 160.46
Bis(2-chloroisopropyl) ether "15.2 1.0 20.0 3063-13976 160.19 N-Nitrosodi-n-propylamine "15.1 1.0 20.0 3014-19876 120.26 Hexachloroethane "13.4 1.0 20.0 3055-12067 140.50
Nitrobenzene "14.0 1.0 20.0 3054-15870 130.36
Isophorone "14.1 1.0 20.0 3047-18071 140.21
2-Nitrophenol "15.0 1.0 20.0 3045-16775 150.26
2,4-Dimethylphenol "11.5 1.0 20.0 3042-12057 20.76
Bis(2-chloroethoxy)methane "14.5 1.0 20.0 3049-16572 150.25 2,4-Dichlorophenol "14.1 1.0 20.0 3053-12270 160.26
1,2,4-Trichlorobenzene "13.7 1.0 20.0 3057-13068 140.24 Naphthalene "13.7 1.0 20.0 3036-12069 190.24
Hexachlorobutadiene "14.4 1.0 20.0 3038-12072 170.47
4-Chloro-3-methylphenol "14.0 1.0 20.0 3041-12870 220.23 Hexachlorocyclopentadiene "11.1 5.0 20.0 3010-12056 201.5 2,4,6-Trichlorophenol "13.9 1.0 20.0 3052-12970 230.22
2-Chloronaphthalene "13.5 1.0 20.0 3065-12067 210.19
Dimethyl phthalate "16.1 1.0 20.0 300.1-12080 280.18
2,6-Dinitrotoluene "13.2 1.0 20.0 30 BS-0468-13766 310.27 Acenaphthylene "13.8 1.0 20.0 3054-12669 220.35
Acenaphthene "15.1 1.0 20.0 3060-13276 150.15
2,4-Dinitrophenol "15.1 10 20.0 300.1-17375 294.4
4-Nitrophenol "5.47 5.0 20.0 30 Q-1213-12927 330.42
2,4-Dinitrotoluene "14.8 1.0 20.0 3048-12774 250.46
Diethyl phthalate "16.5 1.0 20.0 300.1-12083 200.17
4-Chlorophenyl phenyl ether "15.8 1.0 20.0 3038-14579 190.17 Fluorene "14.8 1.0 20.0 3070-12074 190.14
2-Methyl-4,6-dinitrophenol "17.3 5.0 20.0 3053-13087 251.1 N-Nitrosodiphenylamine "12.6 1.0 20.0 3047-12063 210.19 4-Bromophenyl phenyl ether "15.4 1.0 20.0 3065-12077 220.36 Hexachlorobenzene "14.4 1.0 20.0 308-14272 210.24
Pentachlorophenol "15.4 1.0 20.0 3041-12077 250.40
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Acid and Base/Neutral Extractables by GC/MS - Quality Control Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1355 - EPA 625.1 Preparation: EPA 625#LLSF 04/21/26 10:00 LCS Dup (W6D1355-BSD1)Analyzed: 05/01/26 17:53
Phenanthrene ug/l13.8 1.0 20.0 3065-12069 110.32
Anthracene "15.1 1.0 20.0 3043-12076 210.20
Di-n-butyl phthalate "17.2 1.0 20.0 308-12086 160.34
Fluoranthene "14.9 1.0 20.0 3043-12175 190.35
Pyrene "14.5 1.0 20.0 3070-12073 200.25
Butyl benzyl phthalate "16.4 1.0 20.0 300.1-14082 210.49 3,3'-Dichlorobenzidine "7.94 5.0 20.0 30 Q-128-21340 342.5 Bis(2-ethylhexyl)phthalate "15.7 5.0 20.0 3029-13778 222.3 Benzo (a) anthracene "13.0 1.0 20.0 3042-13365 240.46
Chrysene "15.7 1.0 20.0 3044-14078 220.19
Di-n-octyl phthalate "19.5 1.0 20.0 3019-13297 220.46
Benzo (b) fluoranthene "14.4 1.0 20.0 30 AN-IP42-14072 280.46 Benzo (k) fluoranthene "13.9 1.0 20.0 30 AN-IP25-14670 250.24 Benzo (a) pyrene "13.6 1.0 20.0 3032-14868 260.28
Indeno (1,2,3-cd) pyrene "13.5 2.0 20.0 30 Q-120.1-15168 370.66 Dibenzo (a,h) anthracene "12.7 2.0 20.0 30 Q-120.1-20063 360.60 Benzo (g,h,i) perylene "12.4 2.0 20.0 30 Q-120.1-19562 380.42 "40.0 17-120Surrogate: 2-Fluorophenol 3915.6
"40.0 12-120Surrogate: Phenol-d5 2911.7
"20.0 47-120Surrogate: Nitrobenzene-d5 7515.0
"20.0 22-120Surrogate: 2-Fluorobiphenyl 6813.6
"40.0 25-120Surrogate: 2,4,6-Tribromophenol 7329.2
"20.0 44-129Surrogate: Terphenyl-d14 7114.2
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Chlorinated Pesticides and/or PCBs by GC/ECD - Quality Control[TOC_1]Chlorinated Pesticides and/or PCBs by GC/ECD - Quality Control[ Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch W6D1349 - EPA 3510C[TOC]
Batch W6D1349 - EPA 8081A Preparation: EPA 3510C 04/21/26 09:53 Blank (W6D1349-BLK1)
[TOC_3]Blank (W6D1349-BLK1)[TOC]
Analyzed: 04/29/26 07:44
Aldrin ug/lND0.0500.0058
alpha-BHC "ND 0.0500.0057
beta-BHC "ND 0.0500.0072
delta-BHC "ND 0.0500.0097
gamma-BHC (Lindane)"ND 0.0500.0064
4,4´-DDD "ND 0.0500.0099
4,4´-DDE "ND 0.0500.0080
4,4´-DDT "ND 0.0500.015
Dieldrin "ND 0.0500.0061
Endosulfan I "ND 0.0500.0061
Endosulfan II "ND 0.0500.0060
Endosulfan sulfate "ND 0.0500.016
Endrin "ND 0.0500.0072
Endrin aldehyde "ND 0.0500.016
Heptachlor "ND 0.0500.012
Heptachlor epoxide "ND 0.0500.0065
Methoxychlor "ND 0.0500.018
Chlordane (tech)"ND 0.500.23
Toxaphene "ND 2.00.72
2,4'-DDT "ND 0.0500.0082
2,4'-DDE "ND 0.0500.0074
2,4'-DDD "ND 0.0500.013
"0.500 10-137Surrogate: Tetrachloro-meta-xylene 670.333 "0.500 10-123Surrogate: Decachlorobiphenyl 730.363
LCS (W6D1349-BS1)
[TOC_3]LCS (W6D1349-BS1)[TOC]
Analyzed: 04/29/26 08:14
Aldrin ug/l0.416 0.050 0.500 70-130830.0058
alpha-BHC "0.451 0.050 0.500 70-130900.0057
beta-BHC "0.449 0.050 0.500 70-130900.0072
delta-BHC "0.468 0.050 0.500 70-130940.0097
gamma-BHC (Lindane)"0.460 0.050 0.500 70-130920.0064
4,4´-DDD "0.450 0.050 0.500 70-130900.0099
4,4´-DDE "0.480 0.050 0.500 70-130960.0080
4,4´-DDT "0.496 0.050 0.500 70-130990.015
Dieldrin "0.447 0.050 0.500 70-130890.0061
Endosulfan I "0.405 0.050 0.500 70-130810.0061
Endosulfan II "0.422 0.050 0.500 70-130840.0060
Endosulfan sulfate "0.448 0.050 0.500 70-130900.016
Endrin "0.478 0.050 0.500 70-130960.0072
Endrin aldehyde "0.409 0.050 0.500 70-130820.016
Heptachlor "0.428 0.050 0.500 70-130860.012
Heptachlor epoxide "0.428 0.050 0.500 70-130860.0065
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Chlorinated Pesticides and/or PCBs by GC/ECD - Quality Control Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1349 - EPA 8081A Preparation: EPA 3510C 04/21/26 09:53 LCS (W6D1349-BS1)Analyzed: 04/29/26 08:14
Methoxychlor ug/l0.441 0.050 0.500 70-130880.018
alpha-Chlordane "0.463 0.050 0.500 70-130930.0080
gamma-Chlordane "0.474 0.050 0.500 70-130950.0090
Endrin ketone "0.492 0.050 0.500 70-130980.012
"0.500 10-137Surrogate: Tetrachloro-meta-xylene 650.326 "0.500 10-123Surrogate: Decachlorobiphenyl 720.361
LCS Dup (W6D1349-BSD1)
[TOC_3]LCS Dup (W6D1349-BSD1)[TOC]
Analyzed: 04/29/26 08:44
Aldrin ug/l0.420 0.050 0.500 2570-13084 10.0058
alpha-BHC "0.451 0.050 0.500 2570-13090 0.090.0057
beta-BHC "0.449 0.050 0.500 2570-13090 0.070.0072
delta-BHC "0.467 0.050 0.500 2570-13093 0.040.0097
gamma-BHC (Lindane)"0.460 0.050 0.500 2570-13092 0.060.0064 4,4´-DDD "0.454 0.050 0.500 2570-13091 10.0099
4,4´-DDE "0.485 0.050 0.500 2570-13097 10.0080
4,4´-DDT "0.497 0.050 0.500 2570-13099 0.090.015
Dieldrin "0.451 0.050 0.500 2570-13090 0.80.0061
Endosulfan I "0.406 0.050 0.500 2570-13081 0.30.0061
Endosulfan II "0.423 0.050 0.500 2570-13085 0.10.0060
Endosulfan sulfate "0.450 0.050 0.500 2570-13090 0.30.016 Endrin "0.475 0.050 0.500 2570-13095 0.70.0072
Endrin aldehyde "0.409 0.050 0.500 2570-13082 0.080.016 Heptachlor "0.430 0.050 0.500 2570-13086 0.60.012
Heptachlor epoxide "0.429 0.050 0.500 2570-13086 0.20.0065 Methoxychlor "0.442 0.050 0.500 2570-13088 0.20.018
alpha-Chlordane "0.460 0.050 0.500 2570-13092 0.60.0080 gamma-Chlordane "0.477 0.050 0.500 2570-13095 0.70.0090 Endrin ketone "0.493 0.050 0.500 2570-13099 0.30.012
"0.500 10-137Surrogate: Tetrachloro-meta-xylene 660.332 "0.500 10-123Surrogate: Decachlorobiphenyl 720.362
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Chlorinated Pesticides and/or PCBs by GC/ECD - Quality Control Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch W6D1422 - EPA 608#LLSF[TOC]
Batch W6D1422 - EPA 608.3 Preparation: EPA 608#LLSF 04/22/26 08:05 Blank (W6D1422-BLK1)
[TOC_3]Blank (W6D1422-BLK1)[TOC]
Analyzed: 05/06/26 22:22
Aldrin ug/lND0.00500.0031
alpha-BHC "ND 0.0100.0024
beta-BHC "ND 0.00500.0033
delta-BHC "ND 0.00500.0019
gamma-BHC (Lindane)"ND 0.0200.0036
4,4´-DDD "ND 0.0500.0027
4,4´-DDE "ND 0.0500.0037
4,4´-DDT "ND 0.0100.0028
Dieldrin "ND 0.0100.0017
Endosulfan I "ND 0.0200.0019
Endosulfan II "ND 0.0100.0039
Endosulfan sulfate "ND 0.0500.0029
Endrin "ND 0.0100.0040
Endrin aldehyde "ND 0.0100.0039
Heptachlor "ND 0.0100.0023
Heptachlor epoxide "ND 0.0100.0018
Toxaphene "ND 0.500.15
Chlordane (tech)"ND 0.100.043
Aroclor 1016 "ND 0.500.075
Aroclor 1221 "ND 0.500.060
Aroclor 1232 "ND 0.500.083
Aroclor 1242 "ND 0.500.095
Aroclor 1248 "ND 0.500.083
Aroclor 1254 "ND 0.500.040
Aroclor 1260 "ND 0.500.055
"0.100 32-130Surrogate: Tetrachloro-meta-xylene 520.0525 "0.100 33-133Surrogate: Decachlorobiphenyl 680.0681
LCS (W6D1422-BS1)
[TOC_3]LCS (W6D1422-BS1)[TOC]
Analyzed: 05/06/26 22:51
Aldrin ug/l0.0651 0.0050 0.100 54-130650.0031
alpha-BHC "0.0677 0.010 0.100 49-130680.0024
beta-BHC "0.0765 0.0050 0.100 39-130760.0033
delta-BHC "0.0745 0.0050 0.100 51-130740.0019
gamma-BHC (Lindane)"0.0782 0.020 0.100 43-130780.0036
4,4´-DDD "0.0714 0.050 0.100 48-130710.0027
4,4´-DDE "0.0729 0.050 0.100 54-130730.0037
4,4´-DDT "0.0866 0.010 0.100 46-137870.0028
Dieldrin "0.0766 0.010 0.100 58-130770.0017
Endosulfan I "0.0695 0.020 0.100 57-141700.0019
Endosulfan II "0.0773 0.010 0.100 22-171770.0039
Endosulfan sulfate "0.0787 0.050 0.100 38-132790.0029
Endrin "0.0781 0.010 0.100 51-130780.0040
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Chlorinated Pesticides and/or PCBs by GC/ECD - Quality Control Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1422 - EPA 608.3 Preparation: EPA 608#LLSF 04/22/26 08:05 LCS (W6D1422-BS1)Analyzed: 05/06/26 22:51
Endrin aldehyde ug/l0.0651 0.010 0.100 18-130650.0039
Heptachlor "0.0689 0.010 0.100 43-130690.0023
Heptachlor epoxide "0.0751 0.010 0.100 57-132750.0018
"0.100 32-130Surrogate: Tetrachloro-meta-xylene 520.0522 "0.100 33-133Surrogate: Decachlorobiphenyl 670.0669
LCS Dup (W6D1422-BSD1)
[TOC_3]LCS Dup (W6D1422-BSD1)[TOC]
Analyzed: 05/06/26 23:21
Aldrin ug/l0.0658 0.0050 0.100 3054-13066 10.0031
alpha-BHC "0.0690 0.010 0.100 3049-13069 20.0024
beta-BHC "0.0766 0.0050 0.100 3039-13077 0.10.0033
delta-BHC "0.0733 0.0050 0.100 3051-13073 20.0019
gamma-BHC (Lindane)"0.0791 0.020 0.100 3043-13079 10.0036 4,4´-DDD "0.0708 0.050 0.100 3048-13071 0.80.0027
4,4´-DDE "0.0720 0.050 0.100 3054-13072 10.0037
4,4´-DDT "0.0854 0.010 0.100 3046-13785 10.0028
Dieldrin "0.0772 0.010 0.100 3058-13077 0.70.0017
Endosulfan I "0.0697 0.020 0.100 3057-14170 0.20.0019
Endosulfan II "0.0769 0.010 0.100 3022-17177 0.60.0039
Endosulfan sulfate "0.0776 0.050 0.100 3038-13278 10.0029 Endrin "0.0770 0.010 0.100 3051-13077 10.0040
Endrin aldehyde "0.0643 0.010 0.100 3018-13064 10.0039
Heptachlor "0.0693 0.010 0.100 3043-13069 0.60.0023
Heptachlor epoxide "0.0759 0.010 0.100 3057-13276 10.0018 "0.100 32-130Surrogate: Tetrachloro-meta-xylene 510.0507 "0.100 33-133Surrogate: Decachlorobiphenyl 650.0654
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Metals by EPA 200 Series Methods - Quality Control[TOC_1]Metals by E Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch W6D1275 - EPA 200.2[TOC]
Batch W6D1275 - EPA 200.8 Preparation: EPA 200.2 04/20/26 15:33 Blank (W6D1275-BLK1)
[TOC_3]Blank (W6D1275-BLK1)[TOC]
Analyzed: 04/23/26 15:48
Antimony, Total ug/lND0.500.089
Arsenic, Total "ND 0.400.074
Beryllium, Total "ND 0.100.029
Cadmium, Total "ND 0.200.042
Chromium, Total "ND 0.200.089
Copper, Total "ND 0.500.23
Lead, Total "ND 0.200.083
Nickel, Total "ND 2.00.40
Selenium, Total "ND 0.400.067
Silver, Total "ND 0.200.059
Thallium, Total "ND 0.200.021
Zinc, Total "ND 101.7
LCS (W6D1275-BS1)
[TOC_3]LCS (W6D1275-BS1)[TOC]
Analyzed: 04/23/26 15:51
Antimony, Total ug/l51.2 0.50 50.0 85-1151020.089
Arsenic, Total "50.1 0.40 50.0 85-1151000.074
Beryllium, Total "49.9 0.10 50.0 85-1151000.029
Cadmium, Total "49.8 0.20 50.0 85-115990.042
Chromium, Total "49.0 0.20 50.0 85-115980.089
Copper, Total "50.2 0.50 50.0 85-1151000.23
Lead, Total "50.8 0.20 50.0 85-1151010.083
Nickel, Total "50.2 2.0 50.0 85-1151000.40
Selenium, Total "49.5 0.40 50.0 85-115990.067
Silver, Total "50.3 0.20 50.0 85-1151010.059
Thallium, Total "50.6 0.20 50.0 85-1151010.021
Zinc, Total "50.0 10 50.0 85-1151001.7
Matrix Spike (W6D1275-MS1)Source: 6D17029-01
[TOC_3]Matrix Spike (W6D1275-MS1)[TOC]
Analyzed: 04/23/26 16:01
Antimony, Total ug/l51.3 0.50 50.0 0.103 70-1301020.089 Arsenic, Total "51.0 0.40 50.0 1.43 70-130990.074
Beryllium, Total "51.9 0.10 50.0 ND 70-1301040.029
Cadmium, Total "48.6 0.20 50.0 ND 70-130970.042
Chromium, Total "49.2 0.20 50.0 0.391 70-130980.089
Copper, Total "55.2 0.50 50.0 6.38 70-130980.23
Lead, Total "50.4 0.20 50.0 0.140 70-1301010.083
Nickel, Total "49.2 2.0 50.0 1.13 70-130960.40
Selenium, Total "50.5 0.40 50.0 0.161 70-1301010.067
Silver, Total "48.7 0.20 50.0 ND 70-130970.059
Thallium, Total "50.3 0.20 50.0 ND 70-1301010.021
Zinc, Total "52.0 10 50.0 3.75 70-130961.7
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Metals by EPA 200 Series Methods - Quality Control
Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1275 - EPA 200.8 Preparation: EPA 200.2 04/20/26 15:33 Matrix Spike Dup (W6D1275-MSD1)Source: 6D17029-01
[TOC_3]Matrix Spike Dup (W6D1275-MSD1)[TOC]
Analyzed: 04/23/26 16:04
Antimony, Total ug/l52.7 0.50 50.0 0.103 3070-130105 30.089 Arsenic, Total "52.4 0.40 50.0 1.43 3070-130102 30.074
Beryllium, Total "51.1 0.10 50.0 ND 3070-130102 20.029
Cadmium, Total "50.0 0.20 50.0 ND 3070-130100 30.042
Chromium, Total "49.4 0.20 50.0 0.391 3070-13098 0.30.089 Copper, Total "55.8 0.50 50.0 6.38 3070-13099 10.23
Lead, Total "51.5 0.20 50.0 0.140 3070-130103 20.083
Nickel, Total "50.0 2.0 50.0 1.13 3070-13098 20.40
Selenium, Total "49.5 0.40 50.0 0.161 3070-13099 20.067 Silver, Total "50.2 0.20 50.0 ND 3070-130100 30.059
Thallium, Total "51.4 0.20 50.0 ND 3070-130103 20.021
Zinc, Total "52.8 10 50.0 3.75 3070-13098 21.7
[TOC_2]Batch W6D1699 - EPA 245.1[TOC]
Batch W6D1699 - EPA 245.1 Preparation: EPA 245.1 04/27/26 09:28 Blank (W6D1699-BLK1)
[TOC_3]Blank (W6D1699-BLK1)[TOC]
Analyzed: 04/29/26 13:10
Mercury, Total ug/lND0.0500.037
Blank (W6D1699-BLK2)Analyzed: 04/29/26 13:12
Mercury, Total ug/lND0.0500.037
LCS (W6D1699-BS1)
[TOC_3]LCS (W6D1699-BS1)[TOC]
Analyzed: 04/29/26 13:14
Mercury, Total ug/l1.01 0.050 1.00 85-1151010.037
LCS (W6D1699-BS2)Analyzed: 04/29/26 13:16
Mercury, Total ug/l0.967 0.050 1.00 85-115970.037
Matrix Spike (W6D1699-MS1)Source: 6D16009-03
[TOC_3]Matrix Spike (W6D1699-MS1)[TOC]
Analyzed: 04/29/26 13:19
Mercury, Total ug/l0.953 0.050 1.00 ND 70-130950.037
Matrix Spike (W6D1699-MS2)Source: 6D17010-02 Analyzed: 04/29/26 13:46 Mercury, Total ug/l0.946 0.050 1.00 ND 70-130950.037
Matrix Spike Dup (W6D1699-MSD1)Source: 6D16009-03
[TOC_3]Matrix Spike Dup (W6D1699-MSD1)[TOC]
Analyzed: 04/29/26 13:21
Mercury, Total ug/l0.982 0.050 1.00 ND 2070-13098 30.037 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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Metals by EPA 200 Series Methods - Quality Control
Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1699 - EPA 245.1 Preparation: EPA 245.1 04/27/26 09:28 Matrix Spike Dup (W6D1699-MSD2)Source: 6D17010-02 Analyzed: 04/29/26 13:48 Mercury, Total ug/l0.966 0.050 1.00 ND 2070-13097 20.037 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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Organo Tin by GC/MS - Quality Control[TOC_1]Organo
Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch W6D1230 - EPA 3510C[TOC]
Batch W6D1230 - SM 6710B Preparation: EPA 3510C 04/20/26 08:56 Blank (W6D1230-BLK1)
[TOC_3]Blank (W6D1230-BLK1)[TOC]
Analyzed: 05/03/26 18:44
Tri-n-butyltin ug/lND0.00500.0023
"0.200 43-179Surrogate: Tripentyltin 1130.227
LCS (W6D1230-BS1)
[TOC_3]LCS (W6D1230-BS1)[TOC]
Analyzed: 05/03/26 19:06
Tri-n-butyltin ug/l0.0103 0.0050 0.0100 50-1501030.0023 "0.200 43-179Surrogate: Tripentyltin 1110.221
LCS Dup (W6D1230-BSD1)
[TOC_3]LCS Dup (W6D1230-BSD1)[TOC]
Analyzed: 05/03/26 19:29
Tri-n-butyltin ug/l0.0111 0.0050 0.0100 4050-150111 70.0023 "0.200 43-179Surrogate: Tripentyltin 1200.239
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Volatile Organic Compounds by P&T and GC/MS - Quality Control[TOC_1] Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch W6D1144 - EPA 5030B[TOC]
Batch W6D1144 - EPA 624.1 Preparation: EPA 5030B 04/17/26 07:31 Blank (W6D1144-BLK1)
[TOC_3]Blank (W6D1144-BLK1)[TOC]
Analyzed: 04/18/26 04:31
Acrolein ug/lND5.01.2
Chloromethane "ND 1.00.59
Acrylonitrile "ND 2.00.63
Vinyl chloride "ND 1.00.31
Bromomethane "ND 1.00.31
Chloroethane "ND 1.00.38
Trichlorofluoromethane "ND 1.00.45
1,1-Dichloroethene "ND 1.00.39
Methylene chloride "ND 1.00.39
trans-1,2-Dichloroethene "ND 1.00.27
1,1-Dichloroethane "ND 1.00.32
Chloroform "0.299 1.0 Ja0.28
1,1,1-Trichloroethane "ND 1.00.30
Carbon tetrachloride "ND 1.00.28
Benzene "ND 1.00.22
1,2-Dichloroethane "ND 1.00.26
Trichloroethene "ND 1.00.34
1,2-Dichloropropane "ND 1.00.36
Bromodichloromethane "ND 1.00.18
2-Chloroethyl vinyl ether "ND 5.00.59
cis-1,3-Dichloropropene "ND 1.00.36
Toluene "ND 1.00.32
trans-1,3-Dichloropropene "ND 1.00.33
1,1,2-Trichloroethane "ND 1.00.32
Tetrachloroethene "ND 1.00.42
Dibromochloromethane "ND 1.00.35
Chlorobenzene "ND 1.00.23
Ethylbenzene "ND 1.00.41
Bromoform "ND 1.00.27
1,1,2,2-Tetrachloroethane "ND 1.00.38
m-Dichlorobenzene "ND 1.00.39
p-Dichlorobenzene "ND 1.00.19
o-Dichlorobenzene "ND 1.00.16
Acrolein "ND 5.01.2
Acrylonitrile "ND 2.00.63
1,3-Dichloropropene, Total "ND 1.0
Dichlorodifluoromethane (Freon 12)"ND 1.00.30
Methyl tert-butyl ether (MTBE)"ND 1.00.40
m,p-Xylene "ND 1.00.29
o-Xylene "ND 1.00.29
"50.0 82-125Surrogate: 1,2-Dichloroethane-d4 10351.4
"50.0 88-108Surrogate: 4-Bromofluorobenzene 9547.5
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Volatile Organic Compounds by P&T and GC/MS - Quality Control Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1144 - EPA 624.1 Preparation: EPA 5030B 04/17/26 07:31 Blank (W6D1144-BLK1)Analyzed: 04/18/26 04:31
ug/l 50.0 92-112Surrogate: Toluene-d8 10351.4
"50.0 82-125Surrogate: 1,2-Dichloroethane-d4 10351.4
"50.0 88-108Surrogate: 4-Bromofluorobenzene 9547.5
"50.0 92-112Surrogate: Toluene-d8 10351.4
LCS (W6D1144-BS1)
[TOC_3]LCS (W6D1144-BS1)[TOC]
Analyzed: 04/18/26 03:12
Chloromethane ug/l19.0 1.0 20.0 0.1-273950.59
Acrolein "16.5 5.0 20.0 49-152821.2
Vinyl chloride "19.6 1.0 20.0 0.1-251980.31
Acrylonitrile "19.7 2.0 20.0 74-127990.63
Bromomethane "30.4 1.0 20.0 0.1-2421520.31
Chloroethane "25.6 1.0 20.0 14-2301280.38
Trichlorofluoromethane "23.0 1.0 20.0 17-1811150.45
1,1-Dichloroethene "14.6 1.0 20.0 0.1-234730.39
Methylene chloride "20.2 1.0 20.0 0.1-2211010.39
trans-1,2-Dichloroethene "18.8 1.0 20.0 54-156940.27
1,1-Dichloroethane "20.3 1.0 20.0 59-1551020.32
Chloroform "20.2 1.0 20.0 51-1381010.28
1,1,1-Trichloroethane "19.7 1.0 20.0 52-162990.30
Carbon tetrachloride "20.8 1.0 20.0 70-1401040.28
Benzene "20.4 1.0 20.0 37-1511020.22
1,2-Dichloroethane "19.2 1.0 20.0 49-155960.26
Trichloroethene "18.0 1.0 20.0 71-157900.34
1,2-Dichloropropane "19.2 1.0 20.0 0.1-210960.36
Bromodichloromethane "19.6 1.0 20.0 35-155980.18
2-Chloroethyl vinyl ether "18.6 5.0 20.0 0.1-305930.59
cis-1,3-Dichloropropene "20.8 1.0 20.0 0.1-2271040.36
Toluene "18.8 1.0 20.0 47-150940.32
trans-1,3-Dichloropropene "20.9 1.0 20.0 17-1831040.33
1,1,2-Trichloroethane "19.6 1.0 20.0 52-150980.32
Tetrachloroethene "18.8 1.0 20.0 64-148940.42
Dibromochloromethane "19.3 1.0 20.0 53-149970.35
Chlorobenzene "18.9 1.0 20.0 37-160950.23
Ethylbenzene "19.3 1.0 20.0 37-162960.41
Bromoform "19.3 1.0 20.0 45-169960.27
1,1,2,2-Tetrachloroethane "19.9 1.0 20.0 46-157990.38
m-Dichlorobenzene "19.8 1.0 20.0 59-156990.39
p-Dichlorobenzene "18.9 1.0 20.0 18-190950.19
o-Dichlorobenzene "18.8 1.0 20.0 18-190940.16
Acrolein "16.5 5.0 20.0 49-152821.2
Acrylonitrile "19.7 2.0 20.0 74-127990.63
Dichlorodifluoromethane (Freon 12)"19.2 1.0 20.0 67-126960.30 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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Volatile Organic Compounds by P&T and GC/MS - Quality Control Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1144 - EPA 624.1 Preparation: EPA 5030B 04/17/26 07:31 LCS (W6D1144-BS1)Analyzed: 04/18/26 03:12
Methyl tert-butyl ether (MTBE)ug/l84.4 1.0 80.0 80-1281050.40 m,p-Xylene "20.5 1.0 20.0 81-1211020.29
o-Xylene "19.8 1.0 20.0 84-121990.29
"50.0 82-125Surrogate: 1,2-Dichloroethane-d4 10652.9
"50.0 88-108Surrogate: 4-Bromofluorobenzene 10351.3
"50.0 92-112Surrogate: Toluene-d8 10150.4
"50.0 82-125Surrogate: 1,2-Dichloroethane-d4 10652.9
"50.0 88-108Surrogate: 4-Bromofluorobenzene 10351.3
"50.0 92-112Surrogate: Toluene-d8 10150.4
LCS Dup (W6D1144-BSD1)
[TOC_3]LCS Dup (W6D1144-BSD1)[TOC]
Analyzed: 04/18/26 03:38
Chloromethane ug/l9.99 1.0 20.0 25 Q-120.1-27350 620.59 Acrolein "27.3 5.0 20.0 25 Q-1249-152136 491.2
Vinyl chloride "20.1 1.0 20.0 250.1-251100 20.31
Acrylonitrile "20.4 2.0 20.0 2574-127102 40.63
Bromomethane "18.2 1.0 20.0 25 Q-120.1-24291 500.31
Chloroethane "25.1 1.0 20.0 2514-230125 20.38
Trichlorofluoromethane "20.6 1.0 20.0 2517-181103 110.45 1,1-Dichloroethene "23.5 1.0 20.0 25 Q-120.1-234117 460.39 Methylene chloride "22.0 1.0 20.0 250.1-221110 90.39
trans-1,2-Dichloroethene "20.8 1.0 20.0 2554-156104 100.27 1,1-Dichloroethane "20.2 1.0 20.0 2559-155101 0.50.32
Chloroform "20.6 1.0 20.0 2551-138103 20.28
1,1,1-Trichloroethane "19.4 1.0 20.0 2552-16297 20.30
Carbon tetrachloride "20.4 1.0 20.0 2570-140102 20.28
Benzene "20.1 1.0 20.0 2537-151101 10.22
1,2-Dichloroethane "19.1 1.0 20.0 2549-15595 0.50.26
Trichloroethene "17.1 1.0 20.0 2571-15785 50.34
1,2-Dichloropropane "18.5 1.0 20.0 250.1-21092 40.36
Bromodichloromethane "19.5 1.0 20.0 2535-15597 0.70.18
2-Chloroethyl vinyl ether "17.9 5.0 20.0 250.1-30590 40.59 cis-1,3-Dichloropropene "20.5 1.0 20.0 250.1-227103 10.36 Toluene "18.1 1.0 20.0 2547-15091 30.32
trans-1,3-Dichloropropene "21.1 1.0 20.0 2517-183105 0.90.33 1,1,2-Trichloroethane "19.7 1.0 20.0 2552-15099 0.50.32 Tetrachloroethene "19.7 1.0 20.0 2564-14898 50.42
Dibromochloromethane "19.9 1.0 20.0 2553-149100 30.35
Chlorobenzene "18.6 1.0 20.0 2537-16093 20.23
Ethylbenzene "18.6 1.0 20.0 2537-16293 40.41
Bromoform "18.9 1.0 20.0 2545-16995 20.27
1,1,2,2-Tetrachloroethane "20.6 1.0 20.0 2546-157103 40.38 m-Dichlorobenzene "20.0 1.0 20.0 2559-156100 0.90.39
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Volatile Organic Compounds by P&T and GC/MS - Quality Control Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1144 - EPA 624.1 Preparation: EPA 5030B 04/17/26 07:31 LCS Dup (W6D1144-BSD1)Analyzed: 04/18/26 03:38
p-Dichlorobenzene ug/l18.6 1.0 20.0 2518-19093 20.19
o-Dichlorobenzene "18.2 1.0 20.0 2518-19091 30.16
Acrolein "27.3 5.0 20.0 25 Q-1249-152136 491.2
Acrylonitrile "20.4 2.0 20.0 2574-127102 40.63
Dichlorodifluoromethane (Freon 12)"17.2 1.0 20.0 2567-12686 110.30 Methyl tert-butyl ether (MTBE)"88.9 1.0 80.0 2580-128111 50.40 m,p-Xylene "19.8 1.0 20.0 2581-12199 40.29
o-Xylene "19.1 1.0 20.0 2584-12196 30.29
"50.0 82-125Surrogate: 1,2-Dichloroethane-d4 10552.6
"50.0 88-108Surrogate: 4-Bromofluorobenzene 10451.9
"50.0 92-112Surrogate: Toluene-d8 10150.4
"50.0 82-125Surrogate: 1,2-Dichloroethane-d4 10552.6
"50.0 88-108Surrogate: 4-Bromofluorobenzene 10451.9
"50.0 92-112Surrogate: Toluene-d8 10150.4
[TOC_2]Batch W6D1288 - Method (P+T)[TOC]
Batch W6D1288 - EPA 524.3 Preparation: Method (P+T) 04/20/26 14:12 Blank (W6D1288-BLK1)
[TOC_3]Blank (W6D1288-BLK1)[TOC]
Analyzed: 04/20/26 19:41
1,2-Dibromoethane (EDB)ug/lND0.0200.0029
1,2-Dibromo-3-chloropropane "ND 0.0100.0042
"0.200 70-130Surrogate: 4-Bromofluorobenzene 980.196
"0.200 70-130Surrogate: 1,2-Dichlorobenzene-d4 990.199
LCS (W6D1288-BS1)
[TOC_3]LCS (W6D1288-BS1)[TOC]
Analyzed: 04/20/26 18:53
1,2-Dibromoethane (EDB)ug/l0.197 0.020 0.200 70-130980.0029 1,2-Dibromo-3-chloropropane "0.0938 0.010 0.100 70-130940.0042 "0.200 70-130Surrogate: 4-Bromofluorobenzene 970.194
"0.200 70-130Surrogate: 1,2-Dichlorobenzene-d4 980.195
LCS Dup (W6D1288-BSD1)
[TOC_3]LCS Dup (W6D1288-BSD1)[TOC]
Analyzed: 04/20/26 19:17
1,2-Dibromoethane (EDB)ug/l0.200 0.020 0.200 3070-130100 10.0029 1,2-Dibromo-3-chloropropane "0.0973 0.010 0.100 3070-13097 40.0042 "0.200 70-130Surrogate: 4-Bromofluorobenzene 970.195
"0.200 70-130Surrogate: 1,2-Dichlorobenzene-d4 990.197
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Volatile Organics by P&T and GC/MS - Quality Control
Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch W6D1288 - EPA 524.3 Preparation: Method (P+T) 04/20/26 14:12 Duplicate (W6D1288-DUP1)Source: 5J22009-01
[TOC_3]Duplicate (W6D1288-DUP1)[TOC]
Analyzed: 04/20/26 20:29
1,2-Dibromoethane (EDB)ug/lND0.020 ND 300.0029
1,2-Dibromo-3-chloropropane "ND 0.010 ND 300.0042
"0.200 70-130Surrogate: 4-Bromofluorobenzene 1020.204
"0.200 70-130Surrogate: 1,2-Dichlorobenzene-d4 1020.204 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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

E1613B - Quality Control[TOC_1]E1613B - Quality Control[ Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch 340357 - E1613B[TOC]
Batch 340357 - E1613B (PCDDs & PCDFs) Preparation: E1613B 04/23/26 06:22 LCS (LCS-340357)
[TOC_3]LCS (LCS-340357)[TOC]
Analyzed: 04/28/26 17:57
2,3,7,8-TCDD pg/L81.6 10.0 100 67-158821.90
1,2,3,7,8-PeCDD "440 50.0 500 70-142885.30
1,2,3,4,7,8-HxCDD "428 50.0 500 70-164864.90
1,2,3,6,7,8-HxCDD "437 50.0 500 76-134875.20
1,2,3,7,8,9-HxCDD "443 50.0 500 64-162896.00
1,2,3,4,6,7,8-HpCDD "428 50.0 500 70-140865.60
OCDD "869 100 1000 78-1448715.0
2,3,7,8-TCDF "82.8 10.0 100 75-158831.40
1,2,3,7,8-PeCDF "438 50.0 500 80-134884.60
2,3,4,7,8-PeCDF "435 50.0 500 68-160873.50
1,2,3,4,7,8-HxCDF "448 50.0 500 72-134904.10
1,2,3,6,7,8-HxCDF "440 50.0 500 84-130884.20
1,2,3,7,8,9-HxCDF "446 50.0 500 78-130894.80
2,3,4,6,7,8-HxCDF "445 50.0 500 70-156893.70
1,2,3,4,6,7,8-HpCDF "434 50.0 500 82-122874.40
1,2,3,4,7,8,9-HpCDF "433 50.0 500 78-138875.70
OCDF "835 100 1000 63-1708415.0
"100 31-191Surrogate: 37Cl-2,3,7,8-TCDD 9493.8
LCSD (LCSD-340357)
[TOC_3]LCSD (LCSD-340357)[TOC]
Analyzed: 04/28/26 19:01
2,3,7,8-TCDD pg/L84.2 10.0 100 2067-15884 3.141.90
1,2,3,7,8-PeCDD "438 50.0 500 2070-14288 0.415.30
1,2,3,4,7,8-HxCDD "447 50.0 500 2070-16489 4.394.90
1,2,3,6,7,8-HxCDD "421 50.0 500 2076-13484 3.685.20
1,2,3,7,8,9-HxCDD "449 50.0 500 2064-16290 1.266.00
1,2,3,4,6,7,8-HpCDD "428 50.0 500 2070-14086 05.60
OCDD "864 100 1000 2078-14486 0.55415.0
2,3,7,8-TCDF "81.6 10.0 100 2075-15882 1.461.40
1,2,3,7,8-PeCDF "434 50.0 500 2080-13487 0.8254.60
2,3,4,7,8-PeCDF "430 50.0 500 2068-16086 1.23.50
1,2,3,4,7,8-HxCDF "432 50.0 500 2072-13486 3.634.10
1,2,3,6,7,8-HxCDF "437 50.0 500 2084-13087 0.7294.20
1,2,3,7,8,9-HxCDF "435 50.0 500 2078-13087 2.684.80
2,3,4,6,7,8-HxCDF "434 50.0 500 2070-15687 2.513.70
1,2,3,4,6,7,8-HpCDF "437 50.0 500 2082-12287 0.6894.40
1,2,3,4,7,8,9-HpCDF "424 50.0 500 2078-13885 2.155.70
OCDF "834 100 1000 2063-17083 0.16815.0
"100 31-191Surrogate: 37Cl-2,3,7,8-TCDD 9494.0
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

E1613B - Quality Control
Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
Batch 340357 - E1613B (PCDDs & PCDFs) Preparation: E1613B 04/23/26 06:22 Blank (MB-340357)
[TOC_3]Blank (MB-340357)[TOC]
Analyzed: 04/28/26 17:01
2,3,7,8-TCDD pg/LND10.0 -1.90
1,2,3,7,8-PeCDD "ND 50.0 -5.30
1,2,3,4,7,8-HxCDD "ND 50.0 -4.90
1,2,3,6,7,8-HxCDD "ND 50.0 -5.20
1,2,3,7,8,9-HxCDD "ND 50.0 -6.00
1,2,3,4,6,7,8-HpCDD "ND 50.0 -5.60
OCDD "ND 100 -15.0
2,3,7,8-TCDF "ND 10.0 -1.40
1,2,3,7,8-PeCDF "ND 50.0 -4.60
2,3,4,7,8-PeCDF "ND 50.0 -3.50
1,2,3,4,7,8-HxCDF "ND 50.0 -4.10
1,2,3,6,7,8-HxCDF "ND 50.0 -4.20
1,2,3,7,8,9-HxCDF "ND 50.0 -4.80
2,3,4,6,7,8-HxCDF "ND 50.0 -3.70
1,2,3,4,6,7,8-HpCDF "ND 50.0 -4.40
1,2,3,4,7,8,9-HpCDF "ND 50.0 -5.70
OCDF "ND 100 -15.0
Total-Tetradioxins "ND 10.0 -1.90
Total-Pentadioxins "ND 50.0 -5.30
Total-Hexadioxins "ND 50.0 -6.00
Total-Heptadioxins "ND 50.0 -5.60
Total-Tetrafurans "ND 10.0 -1.40
Total-Pentafurans "ND 50.0 -4.60
Total-Hexafurans "ND 50.0 -4.80
Total-Heptafurans "ND 50.0 -5.70
"100 35-197Surrogate: 37Cl-2,3,7,8-TCDD 9089.6
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Sample Method Summary
Laboratory & CertificationMethodAnalysisMatrix
General Chemistry Parameters by EPA or APHA Standard Methods SM 4500 NH3DAmmonia as N Water
SM 4500 NH3DAmmonia as N Water
SM 4500-Cl GChlorine, Total Residual Water
SM 4500CN-C/ECyanide, Total Water
Hexavalent Chromium by IC
EPA 218.6Chromium, Hexavalent, AQ by
EPA 218.6
Water
Subcontract - Extended Pesticides GC/ECD/ECD
EPA 8081A WECK Laboratories
14859 E. Clark Ave
Industry City, CA 91745
8081A Extended Pesticide List
(sub)
Water
Subcontract - Pesticides and PCBs by GC/ECD/ECD
EPA 608 WECK Laboratories
14859 E. Clark Ave
Industry City, CA 91745
608 Pesticides & PCBs (sub)Water
Subcontract - Semi-Volatile Organic Compounds by GC/MS
EPA 625 WECK Laboratories
14859 E. Clark Ave
Industry City, CA 91745
625 SVOC CTR RL (sub)Water
Total Metals by ICP/MS
EPA 200.8200.8 Total Chromium Water
Volatile Organic Compounds by EPA Method 624
EPA 624 WECK Laboratories
14859 E. Clark Ave
Industry City, CA 91745
624 Acrolein/Acrylonitrile CTR
RL (sub)
Water
EPA 624 WECK Laboratories
14859 E. Clark Ave
Industry City, CA 91745
624 VOCs-CTR RL (sub)Water
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Annual Effluent Ocean Plan B
05/21/2026 16:21Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603219
WO & Reported:

Notes and Definitions [TOC_1]Notes and Definitions[TOC] DefinitionQualifier
MDL
Relative Percent DifferenceRPD
Analyte NOT DETECTED at or above the method limit (MDL)ND Method Detection Limit
Reporting Limit (Quantitation Limit)RL
A-01 Sample has pH2, result suspect.

AN-IP Sample results for structural isomers may have contribution from their isomeric pair.

B-02 This analyte is detected in the method blank below the MRL, but above the method acceptance criteria.

B-06 This analyte was found in the method blank, which was possibly contaminated during sample preparation. The batch was accepted since this analyte was either not detected or more than 10 times of the blank value for all the samples in the batch.

BS-04 The recovery of this analyte in LCS or LCSD was outside control limit. Sample was accepted based on the remaining LCS, LCSD or LCS-LL.

HT-CL Chlorine should be analyzed within 15 minutes of sampling.

J Detected but below the RL/PQL; therefore, result is an estimated concentration.

Ja Estimated conc. detected MDL.

Jb Result is less than the RL/ML but greater than the MDL. The reported concentration is an estimated value.

M Estimated Maximum Possible Concentration.

M-04 Due to the nature of matrix interferences, sample extract was diluted prior to analysis. The MDL and MRL were raised due to the dilution.

O-04 This analysis was performed outside the EPA recommended holding time.

Q-12 The RPD result exceeded the QC control limits; however, both percent recoveries were acceptable. Sample results for the QC batch were accepted based on the percent recoveries and/or other acceptable QC data.

QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS and/or LCSD recovery and/or RPD values.

QM-09 The spike recovery was outside acceptance limits for the LCSD. The batch was accepted based on acceptable LCS recovery.

QR-03 The RPD value for the sample duplicate or MS/MSD was outside of QC acceptance limits due to matrix interference. QC batch accepted based on LCS and/or LCSD recovery and/or RPD values.

R-01 The MDL and/or MRL for this analyte has been raised to account for matrix interference.

TMP3 Temperature [Out-Acceptable] Direct from Field
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

[TOC_1]Cover Letter[TOC]Certificate of Analysis

FINAL REPORT
Report Date:

Project:

Attn:

Client:

P.O. #:

Fax:

Phones:

Turnaround Time:

Received Date:
5/20/2026
4/17/2026
Normal2603219
2603219
Billing Code:
307 Roemer Way Ste 300
Santa Maria, CA 93454
Meredith Sprister
Oilfield Environmental and Compliance, Inc. (OEC)
(805) 354-7304
(805) 925-3376
Work Orders: 6D17034
EPA-UCMR #CA00211 ● LACSD #10143
This is a complete final report. The information in this report applies to the samples analyzed in accordance with the chain-of-custody document. Results are related only to the items tested. Weck Laboratories certifies that the test results meet all requirements of TNI unless noted by qualifiers or written in the Case Narrative. The report may include analytes that are not currently accreditable by some state agencies or accrediting bodies. This analytical report must be reproduced in its entirety.

Dear Meredith Sprister,
Enclosed are the analytical results for the samples submitted under the attached Chain of Custody document. All analyses adhered to the method criteria, except where noted in the case narrative, sample condition checklist, and/or data qualifiers.

Ryan J. Gasio
Reviewed by:

Project Manager

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Sample Condition

1.90 CTemperature
COC present COC completed properly
COC matches sample labels Wet ice
Blue ice Sample(s) intact
Sample(s) using proper containers Sample(s) have sufficient sample volume Sample(s) received within hold time Sample(s) labels have correct preservation Sample(s) have acceptable pH Sample(s) have acceptable Cl [TOC_1]Sample Conditions[TOC]
[TOC_1]Samples in Report[TOC]
Sample Summary
Sample Name Lab ID Matrix Sampled QualifiersSampled By
6D17034-01 04/15/26 07:002603219-01, Alias: EFF Comp [UNKNOWN]Water 6D17034-02 04/15/26 06:152603219-02, Alias: EFF Grab [UNKNOWN]Water 6D17034-03 04/15/26 00:002603219-03, Alias: Trip Blank [UNKNOWN]Water

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
[TOC_1]Sample Results[TOC]Sample Results
Sample: 2603219-01, Alias: EFF Comp Sampled: 04/15/26 7:00 by [UNKNOWN] 6D17034-01 (Water)
ResultAnalyte MRL Analyzed QualifierUnitsDilMDL
Acid and Base/Neutral Extractables by GC/MS
Method: EPA 625.1
Prepared: 04/21/26 10:00
Instr: GCMS16
Batch ID: W6D1355 Preparation: EPA 625#LLSF Analyst: rmr M-042.0 ug/l 05/01/2620.481,2,4-Trichlorobenzene ND
M-042.0 ug/l 05/01/2620.921,2-Dichlorobenzene ND
M-042.0 ug/l 05/01/2620.601,2-Diphenylhydrazine/Azobenzene ND M-042.0 ug/l 05/01/2620.841,3-Dichlorobenzene ND
M-042.0 ug/l 05/01/2620.961,4-Dichlorobenzene ND
M-042.0 ug/l 05/01/2620.442,4,6-Trichlorophenol ND
B-06, M-04,
J

2.0 ug/l 05/01/2620.522,4-Dichlorophenol 0.57
M-042.0 ug/l 05/01/2621.52,4-Dimethylphenol ND
M-0420 ug/l 05/01/2628.92,4-Dinitrophenol ND
M-042.0 ug/l 05/01/2620.922,4-Dinitrotoluene ND
BS-04, M-042.0 ug/l 05/01/2620.542,6-Dinitrotoluene ND
M-042.0 ug/l 05/01/2620.382-Chloronaphthalene ND
M-042.0 ug/l 05/01/2620.262-Chlorophenol ND
M-0410 ug/l 05/01/2622.32-Methyl-4,6-dinitrophenol ND
M-042.0 ug/l 05/01/2620.522-Nitrophenol ND
M-0410 ug/l 05/01/2625.03,3'-Dichlorobenzidine ND
M-042.0 ug/l 05/01/2620.724-Bromophenyl phenyl ether ND M-042.0 ug/l 05/01/2620.464-Chloro-3-methylphenol ND
M-042.0 ug/l 05/01/2620.344-Chlorophenyl phenyl ether ND M-0410 ug/l 05/01/2620.844-Nitrophenol ND
M-042.0 ug/l 05/01/2620.30AcenaphtheneND
M-042.0 ug/l 05/01/2620.70AcenaphthyleneND
M-042.0 ug/l 05/01/2620.40AnthraceneND
M-0420 ug/l 05/01/2626.4BenzidineND
M-042.0 ug/l 05/01/2620.92Benzo (a) anthracene ND
M-042.0 ug/l 05/01/2620.56Benzo (a) pyrene ND
M-042.0 ug/l 05/01/2620.92Benzo (b) fluoranthene ND
M-044.0 ug/l 05/01/2620.84Benzo (g,h,i) perylene ND
M-042.0 ug/l 05/01/2620.48Benzo (k) fluoranthene ND
M-042.0 ug/l 05/01/2620.50Bis(2-chloroethoxy)methane ND M-042.0 ug/l 05/01/2620.54Bis(2-chloroethyl)ether ND
M-042.0 ug/l 05/01/2620.38Bis(2-chloroisopropyl) ether ND M-0410 ug/l 05/01/2624.6Bis(2-ethylhexyl)phthalate ND
M-042.0 ug/l 05/01/2620.98Butyl benzyl phthalate ND

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Sample Results (Continued)
Sample: 2603219-01, Alias: EFF Comp Sampled: 04/15/26 7:00 by [UNKNOWN] 6D17034-01 (Water) (Continued)
ResultAnalyte MRL Analyzed QualifierUnitsDilMDL
Acid and Base/Neutral Extractables by GC/MS (Continued) Method: EPA 625.1
Prepared: 04/21/26 10:00
Instr: GCMS16
Batch ID: W6D1355 Preparation: EPA 625#LLSF Analyst: rmr M-042.0 ug/l 05/01/2620.38ChryseneND
M-044.0 ug/l 05/01/2621.2Dibenzo (a,h) anthracene ND
M-042.0 ug/l 05/01/2620.34Diethyl phthalate ND
M-042.0 ug/l 05/01/2620.36Dimethyl phthalate ND
M-042.0 ug/l 05/01/2620.68Di-n-butyl phthalate ND
M-042.0 ug/l 05/01/2620.92Di-n-octyl phthalate ND
M-042.0 ug/l 05/01/2620.69FluorantheneND
M-042.0 ug/l 05/01/2620.28FluoreneND
M-042.0 ug/l 05/01/2620.48HexachlorobenzeneND
M-042.0 ug/l 05/01/2620.94HexachlorobutadieneND
M-0410 ug/l 05/01/2623.0HexachlorocyclopentadieneND
M-042.0 ug/l 05/01/2621.0HexachloroethaneND
M-044.0 ug/l 05/01/2621.3Indeno (1,2,3-cd) pyrene ND
M-042.0 ug/l 05/01/2620.42IsophoroneND
M-042.0 ug/l 05/01/2620.48NaphthaleneND
M-042.0 ug/l 05/01/2620.72NitrobenzeneND
M-042.0 ug/l 05/01/2620.48N-Nitrosodimethylamine ND
M-042.0 ug/l 05/01/2620.52N-Nitrosodi-n-propylamine ND
M-042.0 ug/l 05/01/2620.38N-Nitrosodiphenylamine ND
M-042.0 ug/l 05/01/2620.80PentachlorophenolND
M-042.0 ug/l 05/01/2620.64PhenanthreneND
M-042.0 ug/l 05/01/2620.28PhenolND
M-042.0 ug/l 05/01/2620.50PyreneND
Surrogate(s)
25-120 05/01/26Conc: 34.42,4,6-Tribromophenol 90%
22-120 05/01/26Conc: 15.92-Fluorobiphenyl 84%
17-120 05/01/26Conc: 16.42-Fluorophenol 43%
47-120 05/01/26Conc: 16.5Nitrobenzene-d5 87%
12-120 05/01/26Conc: 11.7Phenol-d5 31%
44-129 05/01/26Conc: 16.0Terphenyl-d14 84%
Chlorinated Pesticides and/or PCBs by GC/ECD
Method: EPA 608.3
Prepared: 04/22/26 08:05
Instr: GC07
Batch ID: W6D1422 Preparation: EPA 608#LLSF Analyst: alf

0.050 ug/l 05/07/2610.00274,4´-DDD ND

0.050 ug/l 05/07/2610.00374,4´-DDE ND

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Sample Results (Continued)
Sample: 2603219-01, Alias: EFF Comp Sampled: 04/15/26 7:00 by [UNKNOWN] 6D17034-01 (Water) (Continued)
ResultAnalyte MRL Analyzed QualifierUnitsDilMDL
Chlorinated Pesticides and/or PCBs by GC/ECD (Continued) Method: EPA 608.3
Prepared: 04/22/26 08:05
Instr: GC07
Batch ID: W6D1422 Preparation: EPA 608#LLSF Analyst: alf R-010.010 ug/l 05/07/2610.0104,4´-DDT ND

0.0050 ug/l 05/07/2610.0031AldrinND
R-010.010 ug/l 05/07/2610.010alpha-BHC ND
R-012.0 ug/l 05/07/2612.0Aroclor 1016 ND
R-012.0 ug/l 05/07/2612.0Aroclor 1221 ND
R-012.0 ug/l 05/07/2612.0Aroclor 1232 ND
R-012.0 ug/l 05/07/2612.0Aroclor 1242 ND
R-012.0 ug/l 05/07/2612.0Aroclor 1248 ND
R-012.0 ug/l 05/07/2612.0Aroclor 1254 ND
R-012.0 ug/l 05/07/2612.0Aroclor 1260 ND
R-010.010 ug/l 05/07/2610.010beta-BHC ND
R-010.50 ug/l 05/07/2610.50Chlordane (tech)ND
R-010.010 ug/l 05/07/2610.010delta-BHC ND
R-010.010 ug/l 05/07/2610.010DieldrinND
R-010.020 ug/l 05/07/2610.020Endosulfan I ND
R-010.010 ug/l 05/07/2610.010Endosulfan II ND

0.050 ug/l 05/07/2610.0029Endosulfan sulfate ND
R-010.010 ug/l 05/07/2610.010EndrinND
R-010.010 ug/l 05/07/2610.010Endrin aldehyde ND
R-010.020 ug/l 05/07/2610.020gamma-BHC (Lindane)ND
R-010.010 ug/l 05/07/2610.010HeptachlorND
R-010.010 ug/l 05/07/2610.010Heptachlor epoxide ND
R-012.0 ug/l 05/07/2612.0ToxapheneND
Surrogate(s)
33-133 05/07/26Conc: 0.0740Decachlorobiphenyl77%
32-130 05/07/26Conc: 0.0468Tetrachloro-meta-xylene 49%
Method: EPA 8081A
Prepared: 04/21/26 09:53
Instr: GC07
Batch ID: W6D1349 Preparation: EPA 3510C Analyst: alf

0.050 ug/l 04/29/2610.0132,4'-DDD ND

0.050 ug/l 04/29/2610.00742,4'-DDE ND

0.050 ug/l 04/29/2610.00822,4'-DDT ND
Surrogate(s)
10-123 04/29/26Conc: 0.335Decachlorobiphenyl70%
10-137 04/29/26Conc: 0.293Tetrachloro-meta-xylene 62%

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Sample Results (Continued)
Sample: 2603219-01, Alias: EFF Comp Sampled: 04/15/26 7:00 by [UNKNOWN] 6D17034-01 (Water) (Continued)
ResultAnalyte MRL Analyzed QualifierUnitsDilMDL
Metals by EPA 200 Series Methods
Method: EPA 200.8
Prepared: 04/20/26 15:33
Instr: ICPMS06
Batch ID: W6D1275 Preparation: EPA 200.2 Analyst: ASP
J0.50 ug/l 04/23/2610.089Antimony, Total 0.49

0.40 ug/l 04/23/2610.074Arsenic, Total 2.4

0.10 ug/l 04/23/2610.029Beryllium, Total ND

0.20 ug/l 04/23/2610.042Cadmium, Total ND

0.20 ug/l 04/23/2610.089Chromium, Total 0.29

0.50 ug/l 04/23/2610.23Copper, Total 2.4

0.20 ug/l 04/23/2610.083Lead, Total ND

2.0 ug/l 04/23/2610.40Nickel, Total 2.4
J0.40 ug/l 04/23/2610.067Selenium, Total 0.31

0.20 ug/l 04/23/2610.059Silver, Total ND

0.20 ug/l 04/23/2610.021Thallium, Total ND
10 ug/l 04/23/2611.7Zinc, Total 18
Method: EPA 245.1
Prepared: 04/27/26 09:28
Instr: HG03
Batch ID: W6D1699 Preparation: EPA 245.1 Analyst: kjo

0.050 ug/l 04/29/2610.037Mercury, Total ND
Organo Tin by GC/MS
Method: SM 6710B
Prepared: 04/20/26 08:56
Instr: GCMS23
Batch ID: W6D1230 Preparation: EPA 3510C Analyst: mld

0.0050 ug/l 05/04/2610.0023Tri-n-butyltin ND
Surrogate(s)
43-179 05/04/26Conc: 0.238Tripentyltin120%
Volatile Organic Compounds by P&T and GC/MS
Method: EPA 624.1
Prepared: 04/17/26 07:31
Instr: GCMS21
Batch ID: W6D1144 Preparation: EPA 5030B Analyst: ADM

1.0 ug/l 04/18/2610.301,1,1-Trichloroethane ND

1.0 ug/l 04/18/2610.381,1,2,2-Tetrachloroethane ND

1.0 ug/l 04/18/2610.321,1,2-Trichloroethane ND

1.0 ug/l 04/18/2610.321,1-Dichloroethane ND

1.0 ug/l 04/18/2610.391,1-Dichloroethene ND

1.0 ug/l 04/18/2610.261,2-Dichloroethane ND

1.0 ug/l 04/18/2610.361,2-Dichloropropane ND

1.0 ug/l 04/18/2611,3-Dichloropropene, Total ND
A-015.0 ug/l 04/18/2610.592-Chloroethyl vinyl ether ND

5.0 ug/l 04/18/2611.2AcroleinND
A-01, O-045.0 ug/l 04/18/2611.2AcroleinND

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Sample Results (Continued)
Sample: 2603219-01, Alias: EFF Comp Sampled: 04/15/26 7:00 by [UNKNOWN] 6D17034-01 (Water) (Continued)
ResultAnalyte MRL Analyzed QualifierUnitsDilMDL
Volatile Organic Compounds by P&T and GC/MS (Continued) Method: EPA 624.1
Prepared: 04/17/26 07:31
Instr: GCMS21
Batch ID: W6D1144 Preparation: EPA 5030B Analyst: ADM

2.0 ug/l 04/18/2610.63AcrylonitrileND

1.0 ug/l 04/18/2610.22BenzeneND

1.0 ug/l 04/18/2610.18Bromodichloromethane17
J1.0 ug/l 04/18/2610.27Bromoform0.54

1.0 ug/l 04/18/2610.31BromomethaneND

1.0 ug/l 04/18/2610.28Carbon tetrachloride ND

1.0 ug/l 04/18/2610.23ChlorobenzeneND

1.0 ug/l 04/18/2610.38ChloroethaneND

1.0 ug/l 04/18/2610.28Chloroform30

1.0 ug/l 04/18/2610.59ChloromethaneND

1.0 ug/l 04/18/2610.36cis-1,3-Dichloropropene ND

1.0 ug/l 04/18/2610.35Dibromochloromethane5.5

1.0 ug/l 04/18/2610.30Dichlorodifluoromethane (Freon 12)ND

1.0 ug/l 04/18/2610.41EthylbenzeneND

1.0 ug/l 04/18/2610.29m,p-Xylene ND

1.0 ug/l 04/18/2610.39m-Dichlorobenzene ND

1.0 ug/l 04/18/2610.40Methyl tert-butyl ether (MTBE)ND

1.0 ug/l 04/18/2610.39Methylene chloride ND

1.0 ug/l 04/18/2610.16o-Dichlorobenzene ND

1.0 ug/l 04/18/2610.29o-Xylene ND

1.0 ug/l 04/18/2610.19p-Dichlorobenzene ND

1.0 ug/l 04/18/2610.42TetrachloroetheneND
J1.0 ug/l 04/18/2610.32Toluene0.58

1.0 ug/l 04/18/2610.27trans-1,2-Dichloroethene ND

1.0 ug/l 04/18/2610.33trans-1,3-Dichloropropene ND

1.0 ug/l 04/18/2610.34TrichloroetheneND

1.0 ug/l 04/18/2610.45TrichlorofluoromethaneND

1.0 ug/l 04/18/2610.31Vinyl chloride ND
Surrogate(s)
82-125 04/18/26Conc: 51.31,2-Dichloroethane-d4 103%
88-108 04/18/26Conc: 48.84-Bromofluorobenzene 98%
92-112 04/18/26Conc: 52.4Toluene-d8 105%

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Sample Results (Continued)
Sample: 2603219-02, Alias: EFF Grab Sampled: 04/15/26 6:15 by [UNKNOWN] 6D17034-02 (Water)
ResultAnalyte MRL Analyzed QualifierUnitsDilMDL
Volatile Organics by P&T and GC/MS
Method: EPA 524.3
Prepared: 04/20/26 14:12
Instr: GCMS14
Batch ID: W6D1288 Preparation: Method (P+T)Analyst: ADM

0.010 ug/l 04/21/2610.00421,2-Dibromo-3-chloropropane ND

0.020 ug/l 04/21/2610.00291,2-Dibromoethane (EDB)ND
Surrogate(s)
70-130 04/21/26Conc: 0.2081,2-Dichlorobenzene-d4 104%
70-130 04/21/26Conc: 0.2024-Bromofluorobenzene 101%
Sample Results (Continued)
Sample: 2603219-03, Alias: Trip Blank Sampled: 04/15/26 0:00 by [UNKNOWN] 6D17034-03 (Water)
ResultAnalyte MRL Analyzed QualifierUnitsDilMDL
Volatile Organics by P&T and GC/MS
Method: EPA 524.3
Prepared: 04/20/26 14:12
Instr: GCMS14
Batch ID: W6D1288 Preparation: Method (P+T)Analyst: ADM

0.010 ug/l 04/21/2610.00421,2-Dibromo-3-chloropropane ND

0.020 ug/l 04/21/2610.00291,2-Dibromoethane (EDB)ND
Surrogate(s)
70-130 04/21/26Conc: 0.1981,2-Dichlorobenzene-d4 99%
70-130 04/21/26Conc: 0.1944-Bromofluorobenzene 97%

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
[TOC_1]Quality Assurance
Results[TOC]Quality Control Results
Acid and Base/Neutral Extractables by GC/MS
Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1355 - EPA 625.1
Prepared: 04/21/26 Analyzed: 05/01/26 Blank (W6D1355-BLK1) B-02, J1.0 ug/l0.241,2,4-Trichlorobenzene 0.995
B-061.0 ug/l0.461,2-Dichlorobenzene 1.00

1.0 ug/l0.301,2-Diphenylhydrazine/Azobenzene ND
B-061.0 ug/l0.421,3-Dichlorobenzene 1.05
B-02, J1.0 ug/l0.481,4-Dichlorobenzene 0.968
B-061.0 ug/l0.222,4,6-Trichlorophenol 1.12
B-061.0 ug/l0.262,4-Dichlorophenol 1.04
B-02, J1.0 ug/l0.762,4-Dimethylphenol 0.862
10 ug/l4.42,4-Dinitrophenol ND
B-02, J1.0 ug/l0.462,4-Dinitrotoluene 0.981
B-02, J1.0 ug/l0.272,6-Dinitrotoluene 0.900
B-02, J1.0 ug/l0.192-Chloronaphthalene 0.991
B-02, J1.0 ug/l0.132-Chlorophenol 0.991
J5.0 ug/l1.12-Methyl-4,6-dinitrophenol 1.35
B-061.0 ug/l0.262-Nitrophenol 1.14

5.0 ug/l2.53,3'-Dichlorobenzidine ND
B-061.0 ug/l0.364-Bromophenyl phenyl ether 1.20
B-061.0 ug/l0.234-Chloro-3-methylphenol 1.29
B-061.0 ug/l0.174-Chlorophenyl phenyl ether 1.17

5.0 ug/l0.424-Nitrophenol ND
B-061.0 ug/l0.15Acenaphthene1.15
B-061.0 ug/l0.35Acenaphthylene1.06
B-061.0 ug/l0.20Anthracene1.15
10 ug/l3.2BenzidineND
B-061.0 ug/l0.46Benzo (a) anthracene 1.17
B-061.0 ug/l0.28Benzo (a) pyrene 1.23
B-06,
AN-IP

1.0 ug/l0.46Benzo (b) fluoranthene 1.26
B-02, J2.0 ug/l0.42Benzo (g,h,i) perylene 1.03
B-06,
AN-IP

1.0 ug/l0.24Benzo (k) fluoranthene 1.19
B-061.0 ug/l0.25Bis(2-chloroethoxy)methane 1.09
B-061.0 ug/l0.27Bis(2-chloroethyl)ether 1.05
B-061.0 ug/l0.19Bis(2-chloroisopropyl) ether 1.03

5.0 ug/l2.3Bis(2-ethylhexyl)phthalate ND
B-061.0 ug/l0.49Butyl benzyl phthalate 1.69
B-061.0 ug/l0.19Chrysene1.30
B-02, J2.0 ug/l0.60Dibenzo (a,h) anthracene 1.12
B-061.0 ug/l0.17Diethyl phthalate 1.35
B-061.0 ug/l0.18Dimethyl phthalate 1.14

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Acid and Base/Neutral Extractables by GC/MS (Continued) Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1355 - EPA 625.1 (Continued)
Prepared: 04/21/26 Analyzed: 05/01/26 Blank (W6D1355-BLK1) B-061.0 ug/l0.34Di-n-butyl phthalate 1.50
B-061.0 ug/l0.46Di-n-octyl phthalate 1.87
B-061.0 ug/l0.35Fluoranthene1.26
B-061.0 ug/l0.14Fluorene1.10
B-061.0 ug/l0.24Hexachlorobenzene1.12
B-061.0 ug/l0.47Hexachlorobutadiene1.04

5.0 ug/l1.5HexachlorocyclopentadieneND
B-02, J1.0 ug/l0.50Hexachloroethane0.972
B-02, J2.0 ug/l0.66Indeno (1,2,3-cd) pyrene 1.36
B-061.0 ug/l0.21Isophorone1.02
B-061.0 ug/l0.24Naphthalene1.02
B-061.0 ug/l0.36Nitrobenzene1.16
B-02, J1.0 ug/l0.24N-Nitrosodimethylamine 0.363
B-061.0 ug/l0.26N-Nitrosodi-n-propylamine 1.62
B-02, J1.0 ug/l0.19N-Nitrosodiphenylamine 0.917
B-061.0 ug/l0.40Pentachlorophenol1.45
B-061.0 ug/l0.32Phenanthrene1.13
B-02, J1.0 ug/l0.14Phenol0.364
B-061.0 ug/l0.25Pyrene1.23
Surrogate(s)

40.0 25-12088ug/l2,4,6-Tribromophenol 35.3

20.0 22-12083ug/l2-Fluorobiphenyl 16.6

40.0 17-12059ug/l2-Fluorophenol 23.5

20.0 47-12089ug/lNitrobenzene-d5 17.8

40.0 12-12035ug/lPhenol-d5 14.1

20.0 44-12998ug/lTerphenyl-d14 19.6
Prepared: 04/21/26 Analyzed: 05/01/26 LCS (W6D1355-BS1)

1.0 20.0 57-13079ug/l0.241,2,4-Trichlorobenzene 15.8

1.0 20.0 57-12087ug/l0.461,2-Dichlorobenzene 17.4

1.0 20.0 55-12077ug/l0.421,3-Dichlorobenzene 15.5

1.0 20.0 55-12079ug/l0.481,4-Dichlorobenzene 15.7

1.0 20.0 52-12988ug/l0.222,4,6-Trichlorophenol 17.6

1.0 20.0 53-12283ug/l0.262,4-Dichlorophenol 16.5

1.0 20.0 42-12058ug/l0.762,4-Dimethylphenol 11.7
10 20.0 0.1-173101ug/l4.42,4-Dinitrophenol 20.1

1.0 20.0 48-12795ug/l0.462,4-Dinitrotoluene 19.0

1.0 20.0 68-13790ug/l0.272,6-Dinitrotoluene 18.0

1.0 20.0 65-12083ug/l0.192-Chloronaphthalene 16.7

1.0 20.0 36-12078ug/l0.132-Chlorophenol 15.6

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Acid and Base/Neutral Extractables by GC/MS (Continued) Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1355 - EPA 625.1 (Continued)
Prepared: 04/21/26 Analyzed: 05/01/26 LCS (W6D1355-BS1)

5.0 20.0 53-130112ug/l1.12-Methyl-4,6-dinitrophenol 22.3

1.0 20.0 45-16788ug/l0.262-Nitrophenol 17.5

5.0 20.0 8-21356ug/l2.53,3'-Dichlorobenzidine 11.1

1.0 20.0 65-12096ug/l0.364-Bromophenyl phenyl ether 19.2

1.0 20.0 41-12887ug/l0.234-Chloro-3-methylphenol 17.3

1.0 20.0 38-14596ug/l0.174-Chlorophenyl phenyl ether 19.1

5.0 20.0 13-12938ug/l0.424-Nitrophenol 7.62

1.0 20.0 60-13288ug/l0.15Acenaphthene17.7

1.0 20.0 54-12686ug/l0.35Acenaphthylene17.3

1.0 20.0 43-12094ug/l0.20Anthracene18.7

1.0 20.0 42-13383ug/l0.46Benzo (a) anthracene 16.6

1.0 20.0 32-14889ug/l0.28Benzo (a) pyrene 17.7
AN-IP1.0 20.0 42-14096ug/l0.46Benzo (b) fluoranthene 19.1

2.0 20.0 0.1-19591ug/l0.42Benzo (g,h,i) perylene 18.2
AN-IP1.0 20.0 25-14690ug/l0.24Benzo (k) fluoranthene 17.9

1.0 20.0 49-16584ug/l0.25Bis(2-chloroethoxy)methane 16.8

1.0 20.0 43-12684ug/l0.27Bis(2-chloroethyl)ether 16.8

1.0 20.0 63-13990ug/l0.19Bis(2-chloroisopropyl) ether 17.9

5.0 20.0 29-13797ug/l2.3Bis(2-ethylhexyl)phthalate 19.5

1.0 20.0 0.1-140101ug/l0.49Butyl benzyl phthalate 20.2

1.0 20.0 44-14098ug/l0.19Chrysene19.5

2.0 20.0 0.1-20091ug/l0.60Dibenzo (a,h) anthracene 18.2

1.0 20.0 0.1-120101ug/l0.17Diethyl phthalate 20.2

1.0 20.0 0.1-120107ug/l0.18Dimethyl phthalate 21.4

1.0 20.0 8-120102ug/l0.34Di-n-butyl phthalate 20.3

1.0 20.0 19-132122ug/l0.46Di-n-octyl phthalate 24.4

1.0 20.0 43-12191ug/l0.35Fluoranthene18.1

1.0 20.0 70-12089ug/l0.14Fluorene17.9

1.0 20.0 8-14289ug/l0.24Hexachlorobenzene17.8

1.0 20.0 38-12086ug/l0.47Hexachlorobutadiene17.2

5.0 20.0 10-12068ug/l1.5Hexachlorocyclopentadiene13.6

1.0 20.0 55-12077ug/l0.50Hexachloroethane15.3

2.0 20.0 0.1-15199ug/l0.66Indeno (1,2,3-cd) pyrene 19.7

1.0 20.0 47-18081ug/l0.21Isophorone16.2

1.0 20.0 36-12083ug/l0.24Naphthalene16.6

1.0 20.0 54-15880ug/l0.36Nitrobenzene16.0

1.0 20.0 22-12046ug/l0.24N-Nitrosodimethylamine 9.27

1.0 20.0 14-19885ug/l0.26N-Nitrosodi-n-propylamine 17.1

1.0 20.0 47-12077ug/l0.19N-Nitrosodiphenylamine 15.4

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Acid and Base/Neutral Extractables by GC/MS (Continued) Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1355 - EPA 625.1 (Continued)
Prepared: 04/21/26 Analyzed: 05/01/26 LCS (W6D1355-BS1)

1.0 20.0 41-120100ug/l0.40Pentachlorophenol19.9

1.0 20.0 65-12077ug/l0.32Phenanthrene15.4

1.0 20.0 17-12029ug/l0.14Phenol5.83

1.0 20.0 70-12088ug/l0.25Pyrene17.7
Surrogate(s)

40.0 25-12087ug/l2,4,6-Tribromophenol 34.9

20.0 22-12082ug/l2-Fluorobiphenyl 16.5

40.0 17-12051ug/l2-Fluorophenol 20.6

20.0 47-12085ug/lNitrobenzene-d5 17.0

40.0 12-12033ug/lPhenol-d5 13.3

20.0 44-12987ug/lTerphenyl-d14 17.5
Prepared: 04/21/26 Analyzed: 05/01/26 LCS Dup (W6D1355-BSD1)

1.0 20.0 3057-13068 14ug/l0.241,2,4-Trichlorobenzene 13.7

1.0 20.0 3057-12074 16ug/l0.461,2-Dichlorobenzene 14.8

1.0 20.0 3055-12066 15ug/l0.421,3-Dichlorobenzene 13.3

1.0 20.0 3055-12068 14ug/l0.481,4-Dichlorobenzene 13.6

1.0 20.0 3052-12970 23ug/l0.222,4,6-Trichlorophenol 13.9

1.0 20.0 3053-12270 16ug/l0.262,4-Dichlorophenol 14.1

1.0 20.0 3042-12057 2ug/l0.762,4-Dimethylphenol 11.5
10 20.0 300.1-17375 29ug/l4.42,4-Dinitrophenol 15.1

1.0 20.0 3048-12774 25ug/l0.462,4-Dinitrotoluene 14.8
BS-041.0 20.0 3068-13766 31ug/l0.272,6-Dinitrotoluene 13.2

1.0 20.0 3065-12067 21ug/l0.192-Chloronaphthalene 13.5

1.0 20.0 3036-12067 15ug/l0.132-Chlorophenol 13.5

5.0 20.0 3053-13087 25ug/l1.12-Methyl-4,6-dinitrophenol 17.3

1.0 20.0 3045-16775 15ug/l0.262-Nitrophenol 15.0
Q-125.0 20.0 308-21340 34ug/l2.53,3'-Dichlorobenzidine 7.94

1.0 20.0 3065-12077 22ug/l0.364-Bromophenyl phenyl ether 15.4

1.0 20.0 3041-12870 22ug/l0.234-Chloro-3-methylphenol 14.0

1.0 20.0 3038-14579 19ug/l0.174-Chlorophenyl phenyl ether 15.8 Q-125.0 20.0 3013-12927 33ug/l0.424-Nitrophenol 5.47

1.0 20.0 3060-13276 15ug/l0.15Acenaphthene15.1

1.0 20.0 3054-12669 22ug/l0.35Acenaphthylene13.8

1.0 20.0 3043-12076 21ug/l0.20Anthracene15.1

1.0 20.0 3042-13365 24ug/l0.46Benzo (a) anthracene 13.0

1.0 20.0 3032-14868 26ug/l0.28Benzo (a) pyrene 13.6
AN-IP1.0 20.0 3042-14072 28ug/l0.46Benzo (b) fluoranthene 14.4 Q-122.0 20.0 300.1-19562 38ug/l0.42Benzo (g,h,i) perylene 12.4 AN-IP1.0 20.0 3025-14670 25ug/l0.24Benzo (k) fluoranthene 13.9

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Acid and Base/Neutral Extractables by GC/MS (Continued) Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1355 - EPA 625.1 (Continued)
Prepared: 04/21/26 Analyzed: 05/01/26 LCS Dup (W6D1355-BSD1)

1.0 20.0 3049-16572 15ug/l0.25Bis(2-chloroethoxy)methane 14.5

1.0 20.0 3043-12672 16ug/l0.27Bis(2-chloroethyl)ether 14.3

1.0 20.0 3063-13976 16ug/l0.19Bis(2-chloroisopropyl) ether 15.2

5.0 20.0 3029-13778 22ug/l2.3Bis(2-ethylhexyl)phthalate 15.7

1.0 20.0 300.1-14082 21ug/l0.49Butyl benzyl phthalate 16.4

1.0 20.0 3044-14078 22ug/l0.19Chrysene15.7
Q-122.0 20.0 300.1-20063 36ug/l0.60Dibenzo (a,h) anthracene 12.7

1.0 20.0 300.1-12083 20ug/l0.17Diethyl phthalate 16.5

1.0 20.0 300.1-12080 28ug/l0.18Dimethyl phthalate 16.1

1.0 20.0 308-12086 16ug/l0.34Di-n-butyl phthalate 17.2

1.0 20.0 3019-13297 22ug/l0.46Di-n-octyl phthalate 19.5

1.0 20.0 3043-12175 19ug/l0.35Fluoranthene14.9

1.0 20.0 3070-12074 19ug/l0.14Fluorene14.8

1.0 20.0 308-14272 21ug/l0.24Hexachlorobenzene14.4

1.0 20.0 3038-12072 17ug/l0.47Hexachlorobutadiene14.4

5.0 20.0 3010-12056 20ug/l1.5Hexachlorocyclopentadiene11.1

1.0 20.0 3055-12067 14ug/l0.50Hexachloroethane13.4
Q-122.0 20.0 300.1-15168 37ug/l0.66Indeno (1,2,3-cd) pyrene 13.5

1.0 20.0 3047-18071 14ug/l0.21Isophorone14.1

1.0 20.0 3036-12069 19ug/l0.24Naphthalene13.7

1.0 20.0 3054-15870 13ug/l0.36Nitrobenzene14.0

1.0 20.0 3022-12039 16ug/l0.24N-Nitrosodimethylamine 7.86

1.0 20.0 3014-19876 12ug/l0.26N-Nitrosodi-n-propylamine 15.1

1.0 20.0 3047-12063 21ug/l0.19N-Nitrosodiphenylamine 12.6

1.0 20.0 3041-12077 25ug/l0.40Pentachlorophenol15.4

1.0 20.0 3065-12069 11ug/l0.32Phenanthrene13.8

1.0 20.0 3017-12026 13ug/l0.14Phenol5.15

1.0 20.0 3070-12073 20ug/l0.25Pyrene14.5
Surrogate(s)

40.0 25-12073ug/l2,4,6-Tribromophenol 29.2

20.0 22-12068ug/l2-Fluorobiphenyl 13.6

40.0 17-12039ug/l2-Fluorophenol 15.6

20.0 47-12075ug/lNitrobenzene-d5 15.0

40.0 12-12029ug/lPhenol-d5 11.7

20.0 44-12971ug/lTerphenyl-d14 14.2

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Chlorinated Pesticides and/or PCBs by GC/ECD
Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1349 - EPA 8081A
Prepared: 04/21/26 Analyzed: 04/29/26 Blank (W6D1349-BLK1)

0.050 ug/l0.0132,4'-DDD ND

0.050 ug/l0.00742,4'-DDE ND

0.050 ug/l0.00822,4'-DDT ND

0.050 ug/l0.00994,4´-DDD ND

0.050 ug/l0.00804,4´-DDE ND

0.050 ug/l0.0154,4´-DDT ND

0.050 ug/l0.0058AldrinND

0.050 ug/l0.0057alpha-BHC ND

0.050 ug/l0.0072beta-BHC ND

0.50 ug/l0.23Chlordane (tech)ND

0.050 ug/l0.0097delta-BHC ND

0.050 ug/l0.0061DieldrinND

0.050 ug/l0.0061Endosulfan I ND

0.050 ug/l0.0060Endosulfan II ND

0.050 ug/l0.016Endosulfan sulfate ND

0.050 ug/l0.0072EndrinND

0.050 ug/l0.016Endrin aldehyde ND

0.050 ug/l0.0064gamma-BHC (Lindane)ND

0.050 ug/l0.012HeptachlorND

0.050 ug/l0.0065Heptachlor epoxide ND

0.050 ug/l0.018MethoxychlorND

2.0 ug/l0.72ToxapheneND
Surrogate(s)

0.500 10-12373ug/lDecachlorobiphenyl0.363

0.500 10-13767ug/lTetrachloro-meta-xylene 0.333
Prepared: 04/21/26 Analyzed: 04/29/26 LCS (W6D1349-BS1)

0.050 0.500 70-13090ug/l0.00994,4´-DDD 0.450

0.050 0.500 70-13096ug/l0.00804,4´-DDE 0.480

0.050 0.500 70-13099ug/l0.0154,4´-DDT 0.496

0.050 0.500 70-13083ug/l0.0058Aldrin0.416

0.050 0.500 70-13090ug/l0.0057alpha-BHC 0.451

0.050 0.500 70-13093ug/l0.0080alpha-Chlordane 0.463

0.050 0.500 70-13090ug/l0.0072beta-BHC 0.449

0.050 0.500 70-13094ug/l0.0097delta-BHC 0.468

0.050 0.500 70-13089ug/l0.0061Dieldrin0.447

0.050 0.500 70-13081ug/l0.0061Endosulfan I 0.405

0.050 0.500 70-13084ug/l0.0060Endosulfan II 0.422

0.050 0.500 70-13090ug/l0.016Endosulfan sulfate 0.448

0.050 0.500 70-13096ug/l0.0072Endrin0.478

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Chlorinated Pesticides and/or PCBs by GC/ECD (Continued) Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1349 - EPA 8081A (Continued)
Prepared: 04/21/26 Analyzed: 04/29/26 LCS (W6D1349-BS1)

0.050 0.500 70-13082ug/l0.016Endrin aldehyde 0.409

0.050 0.500 70-13098ug/l0.012Endrin ketone 0.492

0.050 0.500 70-13092ug/l0.0064gamma-BHC (Lindane)0.460

0.050 0.500 70-13095ug/l0.0090gamma-Chlordane 0.474

0.050 0.500 70-13086ug/l0.012Heptachlor0.428

0.050 0.500 70-13086ug/l0.0065Heptachlor epoxide 0.428

0.050 0.500 70-13088ug/l0.018Methoxychlor0.441
Surrogate(s)

0.500 10-12372ug/lDecachlorobiphenyl0.361

0.500 10-13765ug/lTetrachloro-meta-xylene 0.326
Prepared: 04/21/26 Analyzed: 04/29/26 LCS Dup (W6D1349-BSD1)

0.050 0.500 2570-13091 1ug/l0.00994,4´-DDD 0.454

0.050 0.500 2570-13097 1ug/l0.00804,4´-DDE 0.485

0.050 0.500 2570-13099 0.09ug/l0.0154,4´-DDT 0.497

0.050 0.500 2570-13084 1ug/l0.0058Aldrin0.420

0.050 0.500 2570-13090 0.09ug/l0.0057alpha-BHC 0.451

0.050 0.500 2570-13092 0.6ug/l0.0080alpha-Chlordane 0.460

0.050 0.500 2570-13090 0.07ug/l0.0072beta-BHC 0.449

0.050 0.500 2570-13093 0.04ug/l0.0097delta-BHC 0.467

0.050 0.500 2570-13090 0.8ug/l0.0061Dieldrin0.451

0.050 0.500 2570-13081 0.3ug/l0.0061Endosulfan I 0.406

0.050 0.500 2570-13085 0.1ug/l0.0060Endosulfan II 0.423

0.050 0.500 2570-13090 0.3ug/l0.016Endosulfan sulfate 0.450

0.050 0.500 2570-13095 0.7ug/l0.0072Endrin0.475

0.050 0.500 2570-13082 0.08ug/l0.016Endrin aldehyde 0.409

0.050 0.500 2570-13099 0.3ug/l0.012Endrin ketone 0.493

0.050 0.500 2570-13092 0.06ug/l0.0064gamma-BHC (Lindane)0.460

0.050 0.500 2570-13095 0.7ug/l0.0090gamma-Chlordane 0.477

0.050 0.500 2570-13086 0.6ug/l0.012Heptachlor0.430

0.050 0.500 2570-13086 0.2ug/l0.0065Heptachlor epoxide 0.429

0.050 0.500 2570-13088 0.2ug/l0.018Methoxychlor0.442
Surrogate(s)

0.500 10-12372ug/lDecachlorobiphenyl0.362

0.500 10-13766ug/lTetrachloro-meta-xylene 0.332
Batch: W6D1422 - EPA 608.3
Prepared: 04/22/26 Analyzed: 05/06/26 Blank (W6D1422-BLK1)

0.050 ug/l0.00274,4´-DDD ND

0.050 ug/l0.00374,4´-DDE ND

0.010 ug/l0.00284,4´-DDT ND

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Chlorinated Pesticides and/or PCBs by GC/ECD (Continued) Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1422 - EPA 608.3 (Continued)
Prepared: 04/22/26 Analyzed: 05/06/26 Blank (W6D1422-BLK1)

0.0050 ug/l0.0031AldrinND

0.010 ug/l0.0024alpha-BHC ND

0.50 ug/l0.075Aroclor 1016 ND

0.50 ug/l0.060Aroclor 1221 ND

0.50 ug/l0.083Aroclor 1232 ND

0.50 ug/l0.095Aroclor 1242 ND

0.50 ug/l0.083Aroclor 1248 ND

0.50 ug/l0.040Aroclor 1254 ND

0.50 ug/l0.055Aroclor 1260 ND

0.0050 ug/l0.0033beta-BHC ND

0.10 ug/l0.043Chlordane (tech)ND

0.0050 ug/l0.0019delta-BHC ND

0.010 ug/l0.0017DieldrinND

0.020 ug/l0.0019Endosulfan I ND

0.010 ug/l0.0039Endosulfan II ND

0.050 ug/l0.0029Endosulfan sulfate ND

0.010 ug/l0.0040EndrinND

0.010 ug/l0.0039Endrin aldehyde ND

0.020 ug/l0.0036gamma-BHC (Lindane)ND

0.010 ug/l0.0023HeptachlorND

0.010 ug/l0.0018Heptachlor epoxide ND

0.50 ug/l0.15ToxapheneND
Surrogate(s)

0.100 33-13368ug/lDecachlorobiphenyl0.0681

0.100 32-13052ug/lTetrachloro-meta-xylene 0.0525
Prepared: 04/22/26 Analyzed: 05/06/26 LCS (W6D1422-BS1)

0.050 0.100 48-13071ug/l0.00274,4´-DDD 0.0714

0.050 0.100 54-13073ug/l0.00374,4´-DDE 0.0729

0.010 0.100 46-13787ug/l0.00284,4´-DDT 0.0866

0.0050 0.100 54-13065ug/l0.0031Aldrin0.0651

0.010 0.100 49-13068ug/l0.0024alpha-BHC 0.0677

0.0050 0.100 39-13076ug/l0.0033beta-BHC 0.0765

0.0050 0.100 51-13074ug/l0.0019delta-BHC 0.0745

0.010 0.100 58-13077ug/l0.0017Dieldrin0.0766

0.020 0.100 57-14170ug/l0.0019Endosulfan I 0.0695

0.010 0.100 22-17177ug/l0.0039Endosulfan II 0.0773

0.050 0.100 38-13279ug/l0.0029Endosulfan sulfate 0.0787

0.010 0.100 51-13078ug/l0.0040Endrin0.0781

0.010 0.100 18-13065ug/l0.0039Endrin aldehyde 0.0651

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Chlorinated Pesticides and/or PCBs by GC/ECD (Continued) Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1422 - EPA 608.3 (Continued)
Prepared: 04/22/26 Analyzed: 05/06/26 LCS (W6D1422-BS1)

0.020 0.100 43-13078ug/l0.0036gamma-BHC (Lindane)0.0782

0.010 0.100 43-13069ug/l0.0023Heptachlor0.0689

0.010 0.100 57-13275ug/l0.0018Heptachlor epoxide 0.0751 Surrogate(s)

0.100 33-13367ug/lDecachlorobiphenyl0.0669

0.100 32-13052ug/lTetrachloro-meta-xylene 0.0522
Prepared: 04/22/26 Analyzed: 05/06/26 LCS Dup (W6D1422-BSD1)

0.050 0.100 3048-13071 0.8ug/l0.00274,4´-DDD 0.0708

0.050 0.100 3054-13072 1ug/l0.00374,4´-DDE 0.0720

0.010 0.100 3046-13785 1ug/l0.00284,4´-DDT 0.0854

0.0050 0.100 3054-13066 1ug/l0.0031Aldrin0.0658

0.010 0.100 3049-13069 2ug/l0.0024alpha-BHC 0.0690

0.0050 0.100 3039-13077 0.1ug/l0.0033beta-BHC 0.0766

0.0050 0.100 3051-13073 2ug/l0.0019delta-BHC 0.0733

0.010 0.100 3058-13077 0.7ug/l0.0017Dieldrin0.0772

0.020 0.100 3057-14170 0.2ug/l0.0019Endosulfan I 0.0697

0.010 0.100 3022-17177 0.6ug/l0.0039Endosulfan II 0.0769

0.050 0.100 3038-13278 1ug/l0.0029Endosulfan sulfate 0.0776

0.010 0.100 3051-13077 1ug/l0.0040Endrin0.0770

0.010 0.100 3018-13064 1ug/l0.0039Endrin aldehyde 0.0643

0.020 0.100 3043-13079 1ug/l0.0036gamma-BHC (Lindane)0.0791

0.010 0.100 3043-13069 0.6ug/l0.0023Heptachlor0.0693

0.010 0.100 3057-13276 1ug/l0.0018Heptachlor epoxide 0.0759 Surrogate(s)

0.100 33-13365ug/lDecachlorobiphenyl0.0654

0.100 32-13051ug/lTetrachloro-meta-xylene 0.0507

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Metals by EPA 200 Series Methods
Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1275 - EPA 200.8
Prepared: 04/20/26 Analyzed: 04/23/26 Blank (W6D1275-BLK1)

0.50 ug/l0.089Antimony, Total ND

0.40 ug/l0.074Arsenic, Total ND

0.10 ug/l0.029Beryllium, Total ND

0.20 ug/l0.042Cadmium, Total ND

0.20 ug/l0.089Chromium, Total ND

0.50 ug/l0.23Copper, Total ND

0.20 ug/l0.083Lead, Total ND

2.0 ug/l0.40Nickel, Total ND

0.40 ug/l0.067Selenium, Total ND

0.20 ug/l0.059Silver, Total ND

0.20 ug/l0.021Thallium, Total ND
10 ug/l1.7Zinc, Total ND
Prepared: 04/20/26 Analyzed: 04/23/26 LCS (W6D1275-BS1)

0.50 50.0 85-115102ug/l0.089Antimony, Total 51.2

0.40 50.0 85-115100ug/l0.074Arsenic, Total 50.1

0.10 50.0 85-115100ug/l0.029Beryllium, Total 49.9

0.20 50.0 85-11599ug/l0.042Cadmium, Total 49.8

0.20 50.0 85-11598ug/l0.089Chromium, Total 49.0

0.50 50.0 85-115100ug/l0.23Copper, Total 50.2

0.20 50.0 85-115101ug/l0.083Lead, Total 50.8

2.0 50.0 85-115100ug/l0.40Nickel, Total 50.2

0.40 50.0 85-11599ug/l0.067Selenium, Total 49.5

0.20 50.0 85-115101ug/l0.059Silver, Total 50.3

0.20 50.0 85-115101ug/l0.021Thallium, Total 50.6
10 50.0 85-115100ug/l1.7Zinc, Total 50.0
Prepared: 04/20/26 Analyzed: 04/23/26 Source: 6D17029-01Matrix Spike (W6D1275-MS1)

0.50 50.0 0.103 70-130102ug/l0.089Antimony, Total 51.3

0.40 50.0 1.43 70-13099ug/l0.074Arsenic, Total 51.0

0.10 50.0 ND 70-130104ug/l0.029Beryllium, Total 51.9

0.20 50.0 ND 70-13097ug/l0.042Cadmium, Total 48.6

0.20 50.0 0.391 70-13098ug/l0.089Chromium, Total 49.2

0.50 50.0 6.38 70-13098ug/l0.23Copper, Total 55.2

0.20 50.0 0.140 70-130101ug/l0.083Lead, Total 50.4

2.0 50.0 1.13 70-13096ug/l0.40Nickel, Total 49.2

0.40 50.0 0.161 70-130101ug/l0.067Selenium, Total 50.5

0.20 50.0 ND 70-13097ug/l0.059Silver, Total 48.7

0.20 50.0 ND 70-130101ug/l0.021Thallium, Total 50.3
10 50.0 3.75 70-13096ug/l1.7Zinc, Total 52.0

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Metals by EPA 200 Series Methods (Continued)
Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1275 - EPA 200.8 (Continued)
Prepared: 04/20/26 Analyzed: 04/23/26 Source: 6D17029-01Matrix Spike Dup (W6D1275-MSD1)

0.50 50.0 0.103 3070-130105 3ug/l0.089Antimony, Total 52.7

0.40 50.0 1.43 3070-130102 3ug/l0.074Arsenic, Total 52.4

0.10 50.0 ND 3070-130102 2ug/l0.029Beryllium, Total 51.1

0.20 50.0 ND 3070-130100 3ug/l0.042Cadmium, Total 50.0

0.20 50.0 0.391 3070-13098 0.3ug/l0.089Chromium, Total 49.4

0.50 50.0 6.38 3070-13099 1ug/l0.23Copper, Total 55.8

0.20 50.0 0.140 3070-130103 2ug/l0.083Lead, Total 51.5

2.0 50.0 1.13 3070-13098 2ug/l0.40Nickel, Total 50.0

0.40 50.0 0.161 3070-13099 2ug/l0.067Selenium, Total 49.5

0.20 50.0 ND 3070-130100 3ug/l0.059Silver, Total 50.2

0.20 50.0 ND 3070-130103 2ug/l0.021Thallium, Total 51.4 10 50.0 3.75 3070-13098 2ug/l1.7Zinc, Total 52.8
Batch: W6D1699 - EPA 245.1
Prepared: 04/27/26 Analyzed: 04/29/26 Blank (W6D1699-BLK1)

0.050 ug/l0.037Mercury, Total ND
Prepared: 04/27/26 Analyzed: 04/29/26 Blank (W6D1699-BLK2)

0.050 ug/l0.037Mercury, Total ND
Prepared: 04/27/26 Analyzed: 04/29/26 LCS (W6D1699-BS1)

0.050 1.00 85-115101ug/l0.037Mercury, Total 1.01
Prepared: 04/27/26 Analyzed: 04/29/26 LCS (W6D1699-BS2)

0.050 1.00 85-11597ug/l0.037Mercury, Total 0.967
Prepared: 04/27/26 Analyzed: 04/29/26 Source: 6D16009-03Matrix Spike (W6D1699-MS1)

0.050 1.00 ND 70-13095ug/l0.037Mercury, Total 0.953
Prepared: 04/27/26 Analyzed: 04/29/26 Source: 6D17010-02Matrix Spike (W6D1699-MS2)

0.050 1.00 ND 70-13095ug/l0.037Mercury, Total 0.946
Prepared: 04/27/26 Analyzed: 04/29/26 Source: 6D16009-03Matrix Spike Dup (W6D1699-MSD1)

0.050 1.00 ND 2070-13098 3ug/l0.037Mercury, Total 0.982 Prepared: 04/27/26 Analyzed: 04/29/26 Source: 6D17010-02Matrix Spike Dup (W6D1699-MSD2)

0.050 1.00 ND 2070-13097 2ug/l0.037Mercury, Total 0.966

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Organo Tin by GC/MS
Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1230 - SM 6710B
Prepared: 04/20/26 Analyzed: 05/03/26 Blank (W6D1230-BLK1)

0.0050 ug/l0.0023Tri-n-butyltin ND
Surrogate(s)

0.200 43-179113ug/lTripentyltin0.227
Prepared: 04/20/26 Analyzed: 05/03/26 LCS (W6D1230-BS1)

0.0050 0.0100 50-150103ug/l0.0023Tri-n-butyltin 0.0103
Surrogate(s)

0.200 43-179111ug/lTripentyltin0.221
Prepared: 04/20/26 Analyzed: 05/03/26 LCS Dup (W6D1230-BSD1)

0.0050 0.0100 4050-150111 7ug/l0.0023Tri-n-butyltin 0.0111 Surrogate(s)

0.200 43-179120ug/lTripentyltin0.239

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Volatile Organic Compounds by P&T and GC/MS
Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1144 - EPA 624.1
Prepared: 04/17/26 Analyzed: 04/18/26 Blank (W6D1144-BLK1)

1.0 ug/l0.301,1,1-Trichloroethane ND

1.0 ug/l0.381,1,2,2-Tetrachloroethane ND

1.0 ug/l0.321,1,2-Trichloroethane ND

1.0 ug/l0.321,1-Dichloroethane ND

1.0 ug/l0.391,1-Dichloroethene ND

1.0 ug/l0.261,2-Dichloroethane ND

1.0 ug/l0.361,2-Dichloropropane ND

1.0 ug/l1,3-Dichloropropene, Total ND

5.0 ug/l0.592-Chloroethyl vinyl ether ND

5.0 ug/l1.2AcroleinND

2.0 ug/l0.63AcrylonitrileND

1.0 ug/l0.22BenzeneND

1.0 ug/l0.18BromodichloromethaneND

1.0 ug/l0.27BromoformND

1.0 ug/l0.31BromomethaneND

1.0 ug/l0.28Carbon tetrachloride ND

1.0 ug/l0.23ChlorobenzeneND

1.0 ug/l0.38ChloroethaneND
J1.0 ug/l0.28Chloroform0.299

1.0 ug/l0.59ChloromethaneND

1.0 ug/l0.36cis-1,3-Dichloropropene ND

1.0 ug/l0.35DibromochloromethaneND

1.0 ug/l0.30Dichlorodifluoromethane (Freon 12)ND

1.0 ug/l0.41EthylbenzeneND

1.0 ug/l0.29m,p-Xylene ND

1.0 ug/l0.39m-Dichlorobenzene ND

1.0 ug/l0.40Methyl tert-butyl ether (MTBE)ND

1.0 ug/l0.39Methylene chloride ND

1.0 ug/l0.16o-Dichlorobenzene ND

1.0 ug/l0.29o-Xylene ND

1.0 ug/l0.19p-Dichlorobenzene ND

1.0 ug/l0.42TetrachloroetheneND

1.0 ug/l0.32TolueneND

1.0 ug/l0.27trans-1,2-Dichloroethene ND

1.0 ug/l0.33trans-1,3-Dichloropropene ND

1.0 ug/l0.34TrichloroetheneND

1.0 ug/l0.45TrichlorofluoromethaneND

1.0 ug/l0.31Vinyl chloride ND
Surrogate(s)

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Volatile Organic Compounds by P&T and GC/MS (Continued) Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1144 - EPA 624.1 (Continued)
Prepared: 04/17/26 Analyzed: 04/18/26 Blank (W6D1144-BLK1) Surrogate(s)

50.0 82-125103ug/l1,2-Dichloroethane-d4 51.4

50.0 88-10895ug/l4-Bromofluorobenzene 47.5

50.0 92-112103ug/lToluene-d8 51.4
Prepared: 04/17/26 Analyzed: 04/18/26 LCS (W6D1144-BS1)

1.0 20.0 52-16299ug/l0.301,1,1-Trichloroethane 19.7

1.0 20.0 46-15799ug/l0.381,1,2,2-Tetrachloroethane 19.9

1.0 20.0 52-15098ug/l0.321,1,2-Trichloroethane 19.6

1.0 20.0 59-155102ug/l0.321,1-Dichloroethane 20.3

1.0 20.0 0.1-23473ug/l0.391,1-Dichloroethene 14.6

1.0 20.0 49-15596ug/l0.261,2-Dichloroethane 19.2

1.0 20.0 0.1-21096ug/l0.361,2-Dichloropropane 19.2

5.0 20.0 0.1-30593ug/l0.592-Chloroethyl vinyl ether 18.6

5.0 20.0 49-15282ug/l1.2Acrolein16.5

2.0 20.0 74-12799ug/l0.63Acrylonitrile19.7

1.0 20.0 37-151102ug/l0.22Benzene20.4

1.0 20.0 35-15598ug/l0.18Bromodichloromethane19.6

1.0 20.0 45-16996ug/l0.27Bromoform19.3

1.0 20.0 0.1-242152ug/l0.31Bromomethane30.4

1.0 20.0 70-140104ug/l0.28Carbon tetrachloride 20.8

1.0 20.0 37-16095ug/l0.23Chlorobenzene18.9

1.0 20.0 14-230128ug/l0.38Chloroethane25.6

1.0 20.0 51-138101ug/l0.28Chloroform20.2

1.0 20.0 0.1-27395ug/l0.59Chloromethane19.0

1.0 20.0 0.1-227104ug/l0.36cis-1,3-Dichloropropene 20.8

1.0 20.0 53-14997ug/l0.35Dibromochloromethane19.3

1.0 20.0 67-12696ug/l0.30Dichlorodifluoromethane (Freon 12)19.2

1.0 20.0 37-16296ug/l0.41Ethylbenzene19.3

1.0 20.0 81-121102ug/l0.29m,p-Xylene 20.5

1.0 20.0 59-15699ug/l0.39m-Dichlorobenzene 19.8

1.0 80.0 80-128105ug/l0.40Methyl tert-butyl ether (MTBE)84.4

1.0 20.0 0.1-221101ug/l0.39Methylene chloride 20.2

1.0 20.0 18-19094ug/l0.16o-Dichlorobenzene 18.8

1.0 20.0 84-12199ug/l0.29o-Xylene 19.8

1.0 20.0 18-19095ug/l0.19p-Dichlorobenzene 18.9

1.0 20.0 64-14894ug/l0.42Tetrachloroethene18.8

1.0 20.0 47-15094ug/l0.32Toluene18.8

1.0 20.0 54-15694ug/l0.27trans-1,2-Dichloroethene 18.8

1.0 20.0 17-183104ug/l0.33trans-1,3-Dichloropropene 20.9

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Volatile Organic Compounds by P&T and GC/MS (Continued) Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1144 - EPA 624.1 (Continued)
Prepared: 04/17/26 Analyzed: 04/18/26 LCS (W6D1144-BS1)

1.0 20.0 71-15790ug/l0.34Trichloroethene18.0

1.0 20.0 17-181115ug/l0.45Trichlorofluoromethane23.0

1.0 20.0 0.1-25198ug/l0.31Vinyl chloride 19.6
Surrogate(s)

50.0 82-125106ug/l1,2-Dichloroethane-d4 52.9

50.0 88-108103ug/l4-Bromofluorobenzene 51.3

50.0 92-112101ug/lToluene-d8 50.4
Prepared: 04/17/26 Analyzed: 04/18/26 LCS Dup (W6D1144-BSD1)

1.0 20.0 2552-16297 2ug/l0.301,1,1-Trichloroethane 19.4

1.0 20.0 2546-157103 4ug/l0.381,1,2,2-Tetrachloroethane 20.6

1.0 20.0 2552-15099 0.5ug/l0.321,1,2-Trichloroethane 19.7

1.0 20.0 2559-155101 0.5ug/l0.321,1-Dichloroethane 20.2 Q-121.0 20.0 250.1-234117 46ug/l0.391,1-Dichloroethene 23.5

1.0 20.0 2549-15595 0.5ug/l0.261,2-Dichloroethane 19.1

1.0 20.0 250.1-21092 4ug/l0.361,2-Dichloropropane 18.5

5.0 20.0 250.1-30590 4ug/l0.592-Chloroethyl vinyl ether 17.9 Q-125.0 20.0 2549-152136 49ug/l1.2Acrolein27.3

2.0 20.0 2574-127102 4ug/l0.63Acrylonitrile20.4

1.0 20.0 2537-151101 1ug/l0.22Benzene20.1

1.0 20.0 2535-15597 0.7ug/l0.18Bromodichloromethane19.5

1.0 20.0 2545-16995 2ug/l0.27Bromoform18.9
Q-121.0 20.0 250.1-24291 50ug/l0.31Bromomethane18.2

1.0 20.0 2570-140102 2ug/l0.28Carbon tetrachloride 20.4

1.0 20.0 2537-16093 2ug/l0.23Chlorobenzene18.6

1.0 20.0 2514-230125 2ug/l0.38Chloroethane25.1

1.0 20.0 2551-138103 2ug/l0.28Chloroform20.6
Q-121.0 20.0 250.1-27350 62ug/l0.59Chloromethane9.99

1.0 20.0 250.1-227103 1ug/l0.36cis-1,3-Dichloropropene 20.5

1.0 20.0 2553-149100 3ug/l0.35Dibromochloromethane19.9

1.0 20.0 2567-12686 11ug/l0.30Dichlorodifluoromethane (Freon 12)17.2

1.0 20.0 2537-16293 4ug/l0.41Ethylbenzene18.6

1.0 20.0 2581-12199 4ug/l0.29m,p-Xylene 19.8

1.0 20.0 2559-156100 0.9ug/l0.39m-Dichlorobenzene 20.0

1.0 80.0 2580-128111 5ug/l0.40Methyl tert-butyl ether (MTBE)88.9

1.0 20.0 250.1-221110 9ug/l0.39Methylene chloride 22.0

1.0 20.0 2518-19091 3ug/l0.16o-Dichlorobenzene 18.2

1.0 20.0 2584-12196 3ug/l0.29o-Xylene 19.1

1.0 20.0 2518-19093 2ug/l0.19p-Dichlorobenzene 18.6

1.0 20.0 2564-14898 5ug/l0.42Tetrachloroethene19.7

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Quality Control Results (Continued)
Volatile Organic Compounds by P&T and GC/MS (Continued) Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1144 - EPA 624.1 (Continued)
Prepared: 04/17/26 Analyzed: 04/18/26 LCS Dup (W6D1144-BSD1)

1.0 20.0 2547-15091 3ug/l0.32Toluene18.1

1.0 20.0 2554-156104 10ug/l0.27trans-1,2-Dichloroethene 20.8

1.0 20.0 2517-183105 0.9ug/l0.33trans-1,3-Dichloropropene 21.1

1.0 20.0 2571-15785 5ug/l0.34Trichloroethene17.1

1.0 20.0 2517-181103 11ug/l0.45Trichlorofluoromethane20.6

1.0 20.0 250.1-251100 2ug/l0.31Vinyl chloride 20.1
Surrogate(s)

50.0 82-125105ug/l1,2-Dichloroethane-d4 52.6

50.0 88-108104ug/l4-Bromofluorobenzene 51.9

50.0 92-112101ug/lToluene-d8 50.4
Quality Control Results (Continued)
Volatile Organics by P&T and GC/MS
Analyte Result MRL Units
Spike
Level
Source
Result %REC
%REC
Limits RPD
RPD
Limit QualifierMDL
Batch: W6D1288 - EPA 524.3
Prepared & Analyzed: 04/20/26 Blank (W6D1288-BLK1)

0.010 ug/l0.00421,2-Dibromo-3-chloropropane ND

0.020 ug/l0.00291,2-Dibromoethane (EDB)ND
Surrogate(s)

0.200 70-13099ug/l1,2-Dichlorobenzene-d4 0.199

0.200 70-13098ug/l4-Bromofluorobenzene 0.196
Prepared & Analyzed: 04/20/26 LCS (W6D1288-BS1)

0.010 0.100 70-13094ug/l0.00421,2-Dibromo-3-chloropropane 0.0938

0.020 0.200 70-13098ug/l0.00291,2-Dibromoethane (EDB)0.197 Surrogate(s)

0.200 70-13098ug/l1,2-Dichlorobenzene-d4 0.195

0.200 70-13097ug/l4-Bromofluorobenzene 0.194
Prepared & Analyzed: 04/20/26 LCS Dup (W6D1288-BSD1)

0.010 0.100 3070-13097 4ug/l0.00421,2-Dibromo-3-chloropropane 0.0973

0.020 0.200 3070-130100 1ug/l0.00291,2-Dibromoethane (EDB)0.200 Surrogate(s)

0.200 70-13099ug/l1,2-Dichlorobenzene-d4 0.197

0.200 70-13097ug/l4-Bromofluorobenzene 0.195
Prepared & Analyzed: 04/20/26 Source: 5J22009-01Duplicate (W6D1288-DUP1)

0.010 ND 30ug/l0.00421,2-Dibromo-3-chloropropane ND

0.020 ND 30ug/l0.00291,2-Dibromoethane (EDB)ND
Surrogate(s)

0.200 70-130102ug/l1,2-Dichlorobenzene-d4 0.204

0.200 70-130102ug/l4-Bromofluorobenzene 0.204

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
[TOC_1]Qualifiers and
Definitions[TOC]Notes and Definitions
Item Definition
Sample has pH2, result suspect.A-01
Sample results for structural isomers may have contribution from their isomeric pair.AN-IP This analyte is detected in the method blank below the MRL, but above the method acceptance criteria.B-02 This analyte was found in the method blank, which was possibly contaminated during sample preparation. The batch was accepted since this analyte was either not detected or more than 10 times of the blank value for all the samples in the batch.

B-06
The recovery of this analyte in LCS or LCSD was outside control limit. Sample was accepted based on the remaining LCS, LCSD or LCS-LL.BS-04 Estimated conc. detected MDL.J
Due to the nature of matrix interferences, sample extract was diluted prior to analysis. The MDL and MRL were raised due to the dilution.M-04 This analysis was performed outside the EPA recommended holding time.O-04 The RPD result exceeded the QC control limits; however, both percent recoveries were acceptable. Sample results for the QC batch were accepted based on the percent recoveries and/or other acceptable QC data.

Q-12
The MDL and/or MRL for this analyte has been raised to account for matrix interference.R-01 Percent Recovery%REC
DilutionDil
Method Detection LimitMDL
Method Reporting Limit (MRL) is the minimum levels, concentrations, or quantities of a target variable (e.g., target analyte) that can be reported with a specified degree of confidence. The MRL is also known as Limit of Quantitation (LOQ) MRL
NOT DETECTED at or above the Method Reporting Limit (MRL). If Method Detection Limit (MDL) is reported, then ND means not detected at or above the MDL.

ND
Relative Percent DifferenceRPD
Sample that was matrix spiked or duplicated.Source
Any remaining sample(s) will be disposed of one month from the final report date unless other arrangements are made in advance.

All results are expressed on wet weight basis unless otherwise specified.

All samples collected by Weck Laboratories have been sampled in accordance to laboratory SOP Number MIS002.

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Analyses Accreditation Summary
Not By

NELAP OR
Analyte CAS #Not ANAB
ISO 17025
Not By

ELAP-CA
EPA 608.3 in Water
Mirex 2385-85-5
2,4'-DDT 789-02-6
2,4'-DDE 3424-82-6
2,4'-DDD 53-19-0
alpha-Chlordane 5103-71-9
gamma-Chlordane 5566-34-7
EPA 624.1 in Water
Chloromethane 74-87-3
Bromomethane 74-83-9
Chloroethane 75-00-3
1,3-Dichloropropene, Total 542-75-6
Dichlorodifluoromethane (Freon 12)75-71-8
Methyl tert-butyl ether (MTBE)1634-04-4
4-Bromofluorobenzene 460-00-4
4-Bromofluorobenzene 460-00-4
EPA 625.1 in Water
N-Nitrosodimethylamine 62-75-9
1,3-Dichlorobenzene 541-73-1
1,4-Dichlorobenzene 106-46-7
1,2-Dichlorobenzene 95-50-1
Bis(2-chloroisopropyl) ether 108-60-1
N-Nitrosodiphenylamine 86-30-6
1,2-Diphenylhydrazine/Azobenzene 122-66-7
2,4,6-Tribromophenol 118-79-6
EPA 8081A in Water
Aldrin 309-00-2
alpha-BHC 319-84-6
beta-BHC 319-85-7
delta-BHC 319-86-8
gamma-BHC (Lindane)58-89-9
4,4´-DDD 72-54-8
4,4´-DDE 72-55-9
4,4´-DDT 50-29-3
Dieldrin 60-57-1
Endosulfan I 959-98-8
Endosulfan II 33213-65-9
Endosulfan sulfate 1031-07-8
[TOC_1]Not Certified Analyses
Summary[TOC]

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

Project Number:

Project Manager:

Reported:Oilfield Environmental and Compliance, Inc. (OEC) 307 Roemer Way Ste 300
Santa Maria, CA 93454
2603219
Meredith Sprister
05/20/2026 16:43
Certificate of Analysis

FINAL REPORT
Analyses Accreditation Summary (Continued)
Not By

NELAP OR
Analyte CAS #Not ANAB
ISO 17025
Not By

ELAP-CA
EPA 8081A in Water (Continued)
Endrin 72-20-8
Endrin aldehyde 7421-93-4
Heptachlor 76-44-8
Heptachlor epoxide 1024-57-3
Methoxychlor 72-43-5
Chlordane (tech)57-74-9
Toxaphene 8001-35-2
alpha-Chlordane 5103-71-9
gamma-Chlordane 5566-34-7
Endrin ketone 53494-70-5
Kepone 143-50-0
Mirex 2385-85-5
trans-Nonachlor 39765-80-5
cis-Nonachlor 5103-73-1
2,4'-DDT 789-02-6
2,4'-DDE 3424-82-6
2,4'-DDD 53-19-0
Oxychlordane 26880-48-8
Tetrachloro-meta-xylene 877-09-8
Decachlorobiphenyl 2051-24-3
SM 6710B in Water
Tri-n-butyltin 688-73-3
Tripentyltin 41784-41-2
This laboratory report may contain results for target analytes that are not currently certifiable by the California Environmental Laboratory Accreditation Program (ELAP). ELAP is the state agency that accredits environmental testing laboratories in California https://www.waterboards.ca.gov/drinking_water/certlic/labs/index.html >. ELAP certification is required for laboratories that perform testing for regulatory purposes, such as drinking water, wastewater, hazardous waste, and ambient water https://www.waterboards.ca.gov/drinking_water/certlic/labs/apply.html >. However, ELAP does not certify all analytes or methods that a laboratory may offer. Therefore, some of the target analytes in this report may not have been tested under ELAP-approved methods or quality control procedures. The results for these analytes are provided for informational purposes only and should not be used for regulatory compliance or decision making. Please contact the laboratory if you have any questions or concerns about the report.

14859 Clark Avenue,City of Industry CA, 91745 | Phone: (626) 336-2139 www.wecklabs.com

SUBCONTRACT ORDER
2603219
SENDING LABORATORY :

Oilfield Environmental & Compliance, Inc.
307 Roemer Way
Santa Maria, CA 93454
Phone: 805.922.4772 Fax: 805.925.3376
RECEIVING LABORATORY :

WECK Laboratories
14859 E. Clark Ave
Industry City, CA 91745
Phone: (626) 336-2139 Fax: (626) 336-2634
Project Manager: Kimberly Pluma ( [email protected] & [email protected] ) Sample ID Sample CommentsSampledMatrixSample Name
Water15-Apr-26 07:002603219-01 EFF Comp
Analysis:Due:Analysis Comments:
01-May-26 16:00 MDL reportTributyltin
01-May-26 16:00 MDL report, CTR RLs: Sb, As, Be, Cd, Cr, Cu, Pb, Hg, Ni, Se, Ag, Tl, Zn
EPA 200.8 NPDES metals
01-May-26 16:00 MDL report, 2,4-DDD, 2,4-DDE, 2,4-DDT only8081A Extended Pesticide List 01-May-26 16:00 MDL report, CTR RLs625 SVOC CTR RL
01-May-26 16:00 MDL report, CTR RLs: include 2-CLEVE and Chloroform
624 VOCs-CTR RL
30-Apr-26 16:00 Shipped to WECK 4/15/2026, MDL report,
CTR RLs
624 Acrolein/Acrylonitrile CTR RL
01-May-26 16:00 MDL report, CTR RLs608 Pesticides & PCBs Containers Supplied:
(D) 1000mL Glass (Amber)(E) 1000mL Glass (Amber)(F) 1000mL Glass (Amber) (G) 1000mL Glass (Amber)(O) 250mL Poly HNO3 (P) 40mL VOA HCl (Q) 40mL VOA HCl (R) 40mL VOA HCl (S) 40mL VOA
(T) 40mL VOA (V) 1000mL Glass (Amber) HCl
Water15-Apr-26 06:152603219-02 EFF Grab
Analysis:Due:Analysis Comments:
01-May-26 16:00 MDL report524.3 EDB, DBCP
Containers Supplied:
(A) 40mL VOA (Amber) Ascorbic/Maleic (B) 40mL VOA (Amber) Ascorbic/Maleic

Relinquished By Date
Relinquished By Date
Received By Date
DateReceived By

SUBCONTRACT ORDER
2603219
Sample ID Sample CommentsSampledMatrixSample Name
Water15-Apr-26 00:002603219-03 Trip Blank
Analysis:Due:Analysis Comments:
01-May-26 16:00 MDL report524.3 EDB, DBCP
Containers Supplied:
(A) 40mL VOA (Amber) Ascorbic/Maleic

Relinquished By Date
Relinquished By Date
Received By Date
DateReceived By

WorkOrder:

Report Created for:Oilfield Environmental & Compliance
307 Roemer Way, Suite 300
Santa Maria, CA 93454
Project Contact:Kimberly Pluma
Project:2603219
Project P.O.:

Project Received:04/17/2026
Analytical Report reviewed & approved for release on 05/07/2026 by:

Jena Alfaro
2604C89
The report shall not be reproduced except in full, without the written approval of the laboratory. The analytical results relate only to the items tested. Results reported conform to the most current regulatory standards, where applicable, unless otherwise stated.

Analytical Report
1534 Willow Pass Rd. Pittsburg, CA 94565 ♦ TEL: (877) 252-9262 ♦ FAX: (925) 252-9269 ♦ www.mccampbell.com CA ELAP 1644 ♦ ORELAP (NELAP) 4033 ♦ AIHA-LAP ID#232255 ♦ DoD-ELAP Cert # L22-757 Project Manager
Project Location:

McCampbell Analytical, Inc.
"When Quality Counts"

Glossary of Terms & Qualifier Definitions
Client:Oilfield Environmental & Compliance
Project:2603219
WorkOrder:2604C89
McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" Glossary Abbreviation
%D Serial Dilution Percent Difference
95% Interval 95% Confident Interval
CCV Continuing Calibration Verification.

CCV REC (%)The % recovery of Continuing Calibration Verification DF Dilution Factor
DI WET (DISTLC) Waste Extraction Test using DI water
DISS Dissolved (sample filtered using a 0.45 µm filter size) DLT Dilution Test (Serial Dilution)
DUP Duplicate
EDL Estimated Detection Limit
ITEF International Toxicity Equivalence Factor
LCS Laboratory Control Sample
LCS2 Second LCS for the batch. Spike level is lower than that for the first LCS; applicable to method 1633.

LQL Lowest Quantitation Level
MB Method Blank
MB IS/SS % Rec % Recovery of Internal Standard or Surrogate in Method Blank, if applicable MB SS % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit ¹
ML Minimum Level of Quantitation
MS Matrix Spike
MSD Matrix Spike Duplicate
NA Not Applicable
ND Not detected at or above the indicated MDL (if present) or RL.

NR Data Not Reported due to matrix interference or insufficient sample amount.

PDS Post Digestion Spike
PF Prep Factor
RD Relative Difference
RL Reporting Limit ²
RPD Relative Percent Difference
RRT Relative Retention Time
RSD Relative Standard Deviation
SPK Val Spike Value
SPKRef Val Spike Reference Value
SPLP Synthetic Precipitation Leachate Procedure
¹ MDL is the minimum measured concentration of a substance that can be reported with 99% confidence that the measured concentration is distinguishable from method blank results. Definition and Procedure for the Determination of the Method Detection Limit, Revision 2, 40CFR, Part 136, Appendix B, EPA 821-R-16-006, December 2016. Values are based upon our default extraction volume/amount and are subject to change.
² RL is the lowest level that can be reliably determined within specified limits of precision and accuracy during routine laboratory operating conditions. (The RL cannot be lower than the lowest calibration standard used in the initial calibration of the instrument and must be greater than the MDL.) Values are based upon our default extraction volume/amount and are subject to change.

Glossary of Terms & Qualifier Definitions
Client:Oilfield Environmental & Compliance
Project:2603219
WorkOrder:2604C89
McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" TCLP Toxicity Characteristic Leachate Procedure
TEQ Toxicity Equivalents
TNTC “Too Numerous to Count;” greater than 250 colonies observed on the plate.

TPH-Diesel Sample results for semi-volatile TPH (diesel, kerosene, oil, etc) were calculated using a background subtraction procedure to correct for instrument baseline rise (column bleed) as described in Sec 7.7.2.2 of EPA 8015 B, C.

TZA TimeZone Net Adjustment for sample collected outside of MAI's Coordinated Universal Time (UTC). (Adjustment for Daylight Saving is not accounted.)
WET (STLC)Waste Extraction Test (Soluble Threshold Limit Concentration) Analytical Qualifiers
J Result is less than the RL/ML but greater than the MDL. The reported concentration is an estimated value.

M Estimated Maximum Possible Concentration.

Analytical Report
McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" Client:Oilfield Environmental & Compliance
Project:2603219
Date Received:04/17/2026 9:56
WorkOrder:2604C89
Extraction Method:E1613B
Analytical Method:E1613B
Unit:pg/L
Polychlorinated Dibenzo-p-Dioxins and Polychlorinated Dibenzofurans 2603219-01 2604C89-001A Water 04/15/2026 07:00
Analytes Result Qualifiers MDL DF Date AnalyzedIon
Ratio

RRT TEQTEF
WHO '05
ML
Client ID Lab ID Matrix Date Collected
2,3,7,8-TCDD ND 1.81 10.0 1 05/06/2026 16:33
1,2,3,7,8-PeCDD ND 5.06 50.0 1 05/06/2026 16:33
1,2,3,4,7,8-HxCDD ND 4.68 50.0 1 05/06/2026 16:33
1,2,3,6,7,8-HxCDD ND 4.96 50.0 1 05/06/2026 16:33
1,2,3,7,8,9-HxCDD ND 5.73 50.0 1 05/06/2026 16:33
1,2,3,4,6,7,8-HpCDD ND 5.34 50.0 1 05/06/2026 16:33
OCDD ND 14.3 100 1 05/06/2026 16:33
2,3,7,8-TCDF ND 1.34 10.0 1 05/06/2026 16:33
1,2,3,7,8-PeCDF ND 4.39 50.0 1 05/06/2026 16:33
2,3,4,7,8-PeCDF ND 3.34 50.0 1 05/06/2026 16:33
1,2,3,4,7,8-HxCDF ND 3.91 50.0 1 05/06/2026 16:33
1,2,3,6,7,8-HxCDF ND 4.01 50.0 1 05/06/2026 16:33
1,2,3,7,8,9-HxCDF ND 4.58 50.0 1 05/06/2026 16:33
2,3,4,6,7,8-HxCDF ND 3.53 50.0 1 05/06/2026 16:33
1,2,3,4,6,7,8-HpCDF ND 4.20 50.0 1 05/06/2026 16:33
1,2,3,4,7,8,9-HpCDF ND 5.44 50.0 1 05/06/2026 16:33
OCDF ND 14.3 100 1 05/06/2026 16:33
Total-Tetradioxins ND 1.81 10.0 1 05/06/2026 16:33
Total-Pentadioxins ND 5.06 50.0 1 05/06/2026 16:33
Total-Hexadioxins ND 5.73 50.0 1 05/06/2026 16:33
Total-Heptadioxins ND 5.34 50.0 1 05/06/2026 16:33
Total-Tetrafurans 21.2 M 1.34 10.0 1 05/06/2026 16:33 Total-Pentafurans 6.68 JM 4.39 50.0 1 05/06/2026 16:33 Total-Hexafurans ND 4.58 50.0 1 05/06/2026 16:33
Total-Heptafurans ND 5.44 50.0 1 05/06/2026 16:33
Total PCDD+PCDF 27.9 J NA 10.0 1 05/06/2026 16:33
Total Toxicity Equivalence (TEQ):0
Cleanup Standard REC (%)Limits DF
37Cl-2,3,7,8-TCDD 89 35-197 05/06/2026 16:331
Labeled Compound Recovery REC (%)Limits
13C-2,3,7,8-TCDD 83 25-164 05/06/2026 16:33
13C-1,2,3,7,8-PeCDD 84 25-181 05/06/2026 16:33
13C-1,2,3,4,7,8-HxCDD 83 32-141 05/06/2026 16:33
13C-1,2,3,6,7,8-HxCDD 81 28-130 05/06/2026 16:33
13C-1,2,3,4,6,7,8-HpCDD 87 23-140 05/06/2026 16:33
CA ELAP 1644 • ORELAP (NELAP) 4033
(Cont.)

Analytical Report
McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" Client:Oilfield Environmental & Compliance
Project:2603219
Date Received:04/17/2026 9:56
WorkOrder:2604C89
Extraction Method:E1613B
Analytical Method:E1613B
Unit:pg/L
Polychlorinated Dibenzo-p-Dioxins and Polychlorinated Dibenzofurans 2603219-01 2604C89-001A Water 04/15/2026 07:00
Analytes Result Qualifiers MDL DF Date AnalyzedIon
Ratio

RRT TEQTEF
WHO '05
ML
Client ID Lab ID Matrix Date Collected
Labeled Compound Recovery REC (%)Limits
13C-OCDD 87 17-157 05/06/2026 16:33
13C-2,3,7,8-TCDF 81 24-169 05/06/2026 16:33
13C-1,2,3,7,8-PeCDF 80 24-185 05/06/2026 16:33
13C-2,3,4,7,8-PeCDF 82 21-178 05/06/2026 16:33
13C-1,2,3,4,7,8-HxCDF 80 26-152 05/06/2026 16:33
13C-1,2,3,6,7,8-HxCDF 81 26-123 05/06/2026 16:33
13C-2,3,4,6,7,8-HxCDF 82 28-136 05/06/2026 16:33
13C-1,2,3,7,8,9-HxCDF 86 29-147 05/06/2026 16:33
13C-1,2,3,4,6,7,8-HpCDF 84 28-143 05/06/2026 16:33
13C-1,2,3,4,7,8,9-HpCDF 90 26-138 05/06/2026 16:33
Date Analyzed InstrumentID BatchIDFileID Date PreparedAnalystComments 05/06/2026 16:33 GC36 3403575062608 04/23/2026 09:24DVU- CA ELAP 1644 • ORELAP (NELAP) 4033

Project:2603219
CLIENT:Oilfield Environmental & Compliance
Work Order:2604C89 ANALYTICAL QC SUMMARY REPORT
BatchID:340357
07-May-26Date:McCampbell Analytical, Inc.

SampleID:MB-340357
Batch ID:340357 TestNo:E1613B Analysis Date:4/28/2026
Prep Date:4/23/2026
Analyte Result SPKValue SPKRefVal %REC RPDRefVal %RPDLimits RPDLimit Qual Units:pg/L
ML
Run ID:GC36_260430B
TestCode:1613_FULL_W
MDL
2,3,7,8-TCDD - 10.0ND1.90
1,2,3,7,8-PeCDD - 50.0ND5.30
1,2,3,4,7,8-HxCDD - 50.0ND4.90
1,2,3,6,7,8-HxCDD - 50.0ND5.20
1,2,3,7,8,9-HxCDD - 50.0ND6.00
1,2,3,4,6,7,8-HpCDD - 50.0ND5.60
OCDD - 100ND15.0
2,3,7,8-TCDF - 10.0ND1.40
1,2,3,7,8-PeCDF - 50.0ND4.60
2,3,4,7,8-PeCDF - 50.0ND3.50
1,2,3,4,7,8-HxCDF - 50.0ND4.10
1,2,3,6,7,8-HxCDF - 50.0ND4.20
1,2,3,7,8,9-HxCDF - 50.0ND4.80
2,3,4,6,7,8-HxCDF - 50.0ND3.70
1,2,3,4,6,7,8-HpCDF - 50.0ND4.40
1,2,3,4,7,8,9-HpCDF - 50.0ND5.70
OCDF - 100ND15.0
Total-Tetradioxins - 10.0ND1.90
Total-Pentadioxins - 50.0ND5.30
Total-Hexadioxins - 50.0ND6.00
Total-Heptadioxins - 50.0ND5.60
Total-Tetrafurans - 10.0ND1.40
Total-Pentafurans - 50.0ND4.60
Total-Hexafurans - 50.0ND4.80
Total-Heptafurans - 50.0ND5.70
Cleanup Standard
Labeled Compound Recovery
37Cl-2,3,7,8-TCDD 100 90 35 - 19789.6
13C-2,3,7,8-TCDD 1000 88 25 - 164877
13C-1,2,3,7,8-PeCDD 1000 87 25 - 181867
13C-1,2,3,4,7,8-HxCDD 1000 79 32 - 141793
13C-1,2,3,6,7,8-HxCDD 1000 101 28 - 1301010
13C-1,2,3,4,6,7,8-HpCDD 1000 93 23 - 140930
13C-OCDD 2000 93 17 - 1571860
13C-2,3,7,8-TCDF 1000 86 24 - 169857
13C-1,2,3,7,8-PeCDF 1000 85 24 - 185847
13C-2,3,4,7,8-PeCDF 1000 87 21 - 178871
13C-1,2,3,4,7,8-HxCDF 1000 81 26 - 152810
13C-1,2,3,6,7,8-HxCDF 1000 97 26 - 123967
13C-2,3,4,6,7,8-HxCDF 1000 93 28 - 136931
13C-1,2,3,7,8,9-HxCDF 1000 96 29 - 147962
13C-1,2,3,4,6,7,8-HpCDF 1000 90 28 - 143901
13C-1,2,3,4,7,8,9-HpCDF 1000 95 26 - 138952
CA ELAP 1644 ♦ ORELAP (NELAP) 4033 ♦ AIH

Project:2603219
CLIENT:Oilfield Environmental & Compliance
Work Order:2604C89 ANALYTICAL QC SUMMARY REPORT
BatchID:340357
07-May-26Date:McCampbell Analytical, Inc.

SampleID:LCS-340357
Batch ID:340357 TestNo:E1613B Analysis Date:4/28/2026
Prep Date:4/23/2026
Analyte Result SPKValue SPKRefVal %REC RPDRefVal %RPDLimits RPDLimit Qual Units:pg/L
ML
Run ID:GC36_260430B
TestCode:1613_FULL_W
MDL
2,3,7,8-TCDD 100 82 67 - 15810.0 081.6 1.90
1,2,3,7,8-PeCDD 500 88 70 - 14250.0 04405.30
1,2,3,4,7,8-HxCDD 500 86 70 - 16450.0 04284.90
1,2,3,6,7,8-HxCDD 500 87 76 - 13450.0 04375.20
1,2,3,7,8,9-HxCDD 500 89 64 - 16250.0 04436.00
1,2,3,4,6,7,8-HpCDD 500 86 70 - 14050.0 04285.60
OCDD 1000 87 78 - 144100086915.0
2,3,7,8-TCDF 100 83 75 - 15810.0 082.8 1.40
1,2,3,7,8-PeCDF 500 88 80 - 13450.0 04384.60
2,3,4,7,8-PeCDF 500 87 68 - 16050.0 04353.50
1,2,3,4,7,8-HxCDF 500 90 72 - 13450.0 04484.10
1,2,3,6,7,8-HxCDF 500 88 84 - 13050.0 04404.20
1,2,3,7,8,9-HxCDF 500 89 78 - 13050.0 04464.80
2,3,4,6,7,8-HxCDF 500 89 70 - 15650.0 04453.70
1,2,3,4,6,7,8-HpCDF 500 87 82 - 12250.0 04344.40
1,2,3,4,7,8,9-HpCDF 500 87 78 - 13850.0 04335.70
OCDF 1000 84 63 - 170100083515.0
Cleanup Standard
Labeled Compound Recovery
37Cl-2,3,7,8-TCDD 100 94 31 - 19193.8
13C-2,3,7,8-TCDD 1000 91 20 - 175914
13C-1,2,3,7,8-PeCDD 1000 88 21 - 227876
13C-1,2,3,4,7,8-HxCDD 1000 79 21 - 193791
13C-1,2,3,6,7,8-HxCDD 1000 100 25 - 163996
13C-1,2,3,4,6,7,8-HpCDD 1000 93 26 - 166934
13C-OCDD 2000 97 13 - 1991930
13C-2,3,7,8-TCDF 1000 89 22 - 152889
13C-1,2,3,7,8-PeCDF 1000 88 21 - 192877
13C-2,3,4,7,8-PeCDF 1000 91 13 - 328907
13C-1,2,3,4,7,8-HxCDF 1000 83 19 - 202827
13C-1,2,3,6,7,8-HxCDF 1000 94 21 - 159941
13C-2,3,4,6,7,8-HxCDF 1000 90 22 - 176896
13C-1,2,3,7,8,9-HxCDF 1000 92 17 - 205915
13C-1,2,3,4,6,7,8-HpCDF 1000 91 21 - 158911
13C-1,2,3,4,7,8,9-HpCDF 1000 92 20 - 186925
CA ELAP 1644 ♦ ORELAP (NELAP) 4033 ♦ AIH

Project:2603219
CLIENT:Oilfield Environmental & Compliance
Work Order:2604C89 ANALYTICAL QC SUMMARY REPORT
BatchID:340357
07-May-26Date:McCampbell Analytical, Inc.

SampleID:LCSD-340357
Batch ID:340357 TestNo:E1613B Analysis Date:4/28/2026
Prep Date:4/23/2026
Analyte Result SPKValue SPKRefVal %REC RPDRefVal %RPDLimits RPDLimit Qual Units:pg/L
ML
Run ID:GC36_260430B
TestCode:1613_FULL_W
MDL
2,3,7,8-TCDD 100 84 67 - 158 2010.0 0 81.6 3.1484.2 1.90 1,2,3,7,8-PeCDD 500 88 70 - 142 2050.0 0 439.8 0.4104385.30 1,2,3,4,7,8-HxCDD 500 89 70 - 164 2050.0 0 427.8 4.394474.90 1,2,3,6,7,8-HxCDD 500 84 76 - 134 2050.0 0 437.2 3.684215.20 1,2,3,7,8,9-HxCDD 500 90 64 - 162 2050.0 0 443.4 1.264496.00 1,2,3,4,6,7,8-HpCDD 500 86 70 - 140 2050.0 0 427.6 04285.60 OCDD 1000 86 78 - 144 2010008690.55486415.0
2,3,7,8-TCDF 100 82 75 - 158 2010.0 0 82.8 1.4681.6 1.40 1,2,3,7,8-PeCDF 500 87 80 - 134 2050.0 0 438 0.8254344.60 2,3,4,7,8-PeCDF 500 86 68 - 160 2050.0 0 435.2 1.204303.50 1,2,3,4,7,8-HxCDF 500 86 72 - 134 2050.0 0 448.2 3.634324.10 1,2,3,6,7,8-HxCDF 500 87 84 - 130 2050.0 0 440.4 0.7294374.20 1,2,3,7,8,9-HxCDF 500 87 78 - 130 2050.0 0 446.4 2.684354.80 2,3,4,6,7,8-HxCDF 500 87 70 - 156 2050.0 0 444.6 2.514343.70 1,2,3,4,6,7,8-HpCDF 500 87 82 - 122 2050.0 0 433.8 0.6894374.40 1,2,3,4,7,8,9-HpCDF 500 85 78 - 138 2050.0 0 432.8 2.154245.70 OCDF 1000 83 63 - 170 201000835.2 0.16883415.0
Cleanup Standard
Labeled Compound Recovery
37Cl-2,3,7,8-TCDD 100 94 31 - 19194.0
13C-2,3,7,8-TCDD 1000 88 20 - 175878
13C-1,2,3,7,8-PeCDD 1000 84 21 - 227845
13C-1,2,3,4,7,8-HxCDD 1000 75 21 - 193747
13C-1,2,3,6,7,8-HxCDD 1000 102 25 - 1631020
13C-1,2,3,4,6,7,8-HpCDD 1000 90 26 - 166901
13C-OCDD 2000 87 13 - 1991730
13C-2,3,7,8-TCDF 1000 86 22 - 152864
13C-1,2,3,7,8-PeCDF 1000 86 21 - 192865
13C-2,3,4,7,8-PeCDF 1000 87 13 - 328872
13C-1,2,3,4,7,8-HxCDF 1000 81 19 - 202812
13C-1,2,3,6,7,8-HxCDF 1000 96 21 - 159961
13C-2,3,4,6,7,8-HxCDF 1000 91 22 - 176914
13C-1,2,3,7,8,9-HxCDF 1000 94 17 - 205943
13C-1,2,3,4,6,7,8-HpCDF 1000 88 21 - 158879
13C-1,2,3,4,7,8,9-HpCDF 1000 89 20 - 186889
CA ELAP 1644 ♦ ORELAP (NELAP) 4033 ♦ AIH

Certified Analyte List
Client:Oilfield Environmental & Compliance
Project:2603219
WorkOrder:2604C89
Analyte Cert 1 Cert 2 Cert 3 Cert 4 Cert 5 Analytical Method Matrix McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" 1,2,3,4,6,7,8-HpCDD E1613B Water
1,2,3,4,6,7,8-HpCDF E1613B Water
1,2,3,4,7,8,9-HpCDF E1613B Water
1,2,3,4,7,8-HxCDD E1613B Water
1,2,3,4,7,8-HxCDF E1613B Water
1,2,3,6,7,8-HxCDD E1613B Water
1,2,3,6,7,8-HxCDF E1613B Water
1,2,3,7,8,9-HxCDD E1613B Water
1,2,3,7,8,9-HxCDF E1613B Water
1,2,3,7,8-PeCDD E1613B Water
1,2,3,7,8-PeCDF E1613B Water
2,3,4,6,7,8-HxCDF E1613B Water
2,3,4,7,8-PeCDF E1613B Water
2,3,7,8-TCDD E1613B Water
2,3,7,8-TCDF E1613B Water
OCDD E1613B Water
OCDF E1613B Water
Total PCDD+PCDF E1613B Water
Total-Heptadioxins E1613B Water
Total-Heptafurans E1613B Water
Total-Hexadioxins E1613B Water
Total-Hexafurans E1613B Water
Total-Pentadioxins E1613B Water
Total-Pentafurans E1613B Water
Total-Tetradioxins E1613B Water
Total-Tetrafurans E1613B Water
Certifications
The Certified Analyte Report lists the compounds for which MAI is accredited at the time of issuance. Although MAI holds multiple accreditations, methods with extensive compound lists may not be fully accredited due to state agency availability.

Cert 1 CA ELAP 1644
Cert 2 ORELAP (NELAP) 4033
Printed:05/07/2026 13:45 Page 1 of 1

McCampbell Analytical, Inc.
1534 Willow Pass Rd
Pittsburg, CA 94565-1701
(925) 252-9262
CHAIN-OF-CUSTODY RECORD Page
Lab ID Matrix Collection Date Hold
Requested Tests (See legend below)
Report to:

Kimberly Pluma
307 Roemer Way, Suite 300
Santa Maria, CA 93454
805-354-7304 FAX:(805) 925-3376
PO:
04/17/2026
ClientSampID
Project:2603219
WorkOrder:2604C89
1 of 1
Date Logged:

Date Received:04/17/2026
1 2 3 4 5 6 7 8 9 10 11 12
Oilfield Environmental & Compliance
Bill to:

Accounts Payable
Oilfield Environmental & Compliance
307 Roemer Way, Suite 300
Santa Maria, CA 93454
Requested TAT:15 days;
ClientCode:OECS
Email:[email protected]; projectmgmt@oecus
EDF EQuIS Email HardCopy ThirdParty
[email protected]
Excel
J-flagCLIP
cc/3rd Party:

WaterTrax
Detection Summary
Dry-Weight
[Oilfield_J-flag (Hist)]
A2604C89-001 Water 4/15/2026 07:002603219-01 A
Prepared by: Lilly Ortiz
NOTE: Soil samples are discarded 60 days after receipt unless other arrangements are made (Water samples are 30 days).

Hazardous samples will be returned to client or disposed of at client expense.

Comments:
1613_FULL_W PRDisposal Fee12 3 4
5 6 7 8
9 10
Test Legend:
11 12
Project Manager:Jennifer Lagerbom

LabID ClientSampID Collection Date
& Time
Date Logged:

TATMatrixTest Name Cont./
Comp.

WORK ORDER SUMMARY
Work Order:2604C89
Comments
Client Name:OILFIELD ENVIRONMENTAL & COMPLIANCE Project:2603219 QC Level:LEVEL 2
HoldDry-
Weight
Sub
Out
Bottle &
Preservative
4/17/2026
Sediment
Content
EDF EQuIS Email HardCopy ThirdPartyExcel J-flagCLIP
Kimberly PlumaClient Contact:
[email protected]; [email protected]'s Email:

WaterTrax
Test Due DateHead
Space
U**
McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" 001A 2603219-01 4/15/2026 7:00 15 daysWaterE1613B (PCDDs & PCDFs)3 1LA, Unpres Present5/8/2026 1 of 1Page
* STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission).

NOTES:
- MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client.

U** = An unpreserved container was received for a method that suggests a preservation in order to extend hold time for analysis. - Organic extracts are held for 40 days before disposal; Inorganic extract are held for 30 days. - ISM prep requires 5 to 10 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 6 to 11 days from sample submission). Due date listed on WO summary will not accurately reflect the time needed for sample preparation.

Cont./Comp. = Containers /Composites

Sample Receipt Checklist
McCampbell Analytical, Inc.1534 Willow Pass Road, Pittsburg, CA 94565-1701 Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" Client Name:Oilfield Environmental & Compliance
WorkOrder №:2604C89
Date Logged:4/17/2026
Logged by:Lilly OrtizMatrix:

Carrier:FedEx
Shipping container/cooler in good condition?Yes No
Custody seals intact on shipping container/cooler?Yes No NA Samples Received on Ice?Yes No
Chain of custody present?Yes No
Chain of custody signed when relinquished and received?Yes No Chain of custody agrees with sample labels?Yes No
Samples in proper containers/bottles?Yes No
Sample containers intact?Yes No
Sufficient sample volume for indicated test?Yes No
NAAll samples received within holding time?Yes No
NASample/Temp Blank temperature
Yes No NAZHS conditional analyses: VOA meets zero headspace requirement (VOCs, TPHg/BTEX, RSK)?
pH acceptable upon receipt (Metal: <2)?Yes No NA
Temp:1.7°C
Chain of Custo dy (COC) Information
Yes NoSample IDs noted by Client on COC?
Yes NoDate and Time of collection noted by Client on COC? Yes NoSampler's name noted on COC?
Sample Receipt Information
Sample Preserv ation and Hold Time (HT) Information
Sample labels checked for correct preservation?Yes No
Project:2603219
(Ice Type:WET ICE )
Comments:
pH tested and acceptable upon receipt (200.7: ≤2; 533: 6 - 8; 537.1: 6 - 8)?
Yes No NA
UCMR Samples:

Free Chlorine tested and acceptable upon receipt (<0.1mg/L) [not applicable to 200.7]?
Yes No NA
Date and Time Received:4/17/2026 09:56
Received by:

COC agrees with Quote?Yes No NA
Custody seals intact on sample bottles?Yes No NA
COC quote is active?Yes No NA

29 North Olive St. Ventura, CA 93001 805-643-5621 www.aquaticbioassay.com T o x i c i t y T e s t i n g R e p o r t
Date of Issue: May 18, 2026
Report ID: OEC0426.072
Prepared for: Oilfield Environmental & Compliance, Inc. 307 Roemer Way
Santa Maria, CA 93454
Project: 2603219
Enclosed are the toxicity test results for the original sample submitted to Aquatic Bioassay and Consulting Laboratories on 04/15/2026. A total of 1 sample was received for testing in accordance with the attached chain of custody (Appendix D).

Statements of Quality Assurance:
Aquatic Bioassay and Consulting Laboratories is certified by the California Environmental Laboratory Accreditation Program (ELAP Certificate #1907). Tests have met test acceptability criteria and are considered valid. All data have been reviewed and verified.

Sincerely,
Beth Maturino, Senior Toxicologist Brianna Jones, QC Manager 805-643-5621 ext. 100 805-643-5621 ext. 280
1 of 25

Aquatic Bioassay and Consulting Laboratories Client: Oilfield Environmental & Compliance, Inc.

Report ID: OEC0426.072 Project: 2603219 29 North Olive St. Ventura, CA 93001 805-643-5621 www.aquaticbioassay.com Sample Information & Test Description
Test material consisted of 1 sample collected by Oilfield Environmental & Compliance, Inc. on 04/15/2026 at 0700. The sample was delivered to Aquatic Bioassay and Consulting Laboratories (ABCL) and accepted on 04/15/2026 at 1215. Upon receipt, the temperature, ammonia and chlorine were measured and recorded on the chain of custody. Testing was conducted at ABCL on 04/15/2026. The test concentration for the sample was 100%.

Table 1. Sample Information & Test Description.

Sample ID Laboratory ID Sample Matrix Test Method Test Organism 2603219-01
EFF Comp OEC0426.072 Water EPA 600/R-95/136 Strongylocentrotus purpuratus

Analysis
All statistical results were calculated using the Comprehensive Environmental Toxicity Information System (CETISTM), version 2.1.5.6 based on flowchart specifications in the corresponding USEPA method.

Organism performance in the test samples is compared to observed performance in the laboratory’s concurrent negative control.

Results
Test results are summarized in the tables below. Statistical analysis and detailed results, including replicate data, are included in the CETISTM Statistical Analysis Report in Appendix A. The raw data sheets are also included in Appendix C.

Table 2. Single Dilution Toxicity Results.

Sample ID Test Organism Endpoint NOEC TUc
2603219-01
EFF Comp
Strongylocentrotus
purpuratus
Fertilization
Rate 1

Table 3. Toxicity Results for Strongylocentrotus purpuratus.

Sample ID Test Organism Test Concentration Fertilization Rate 2603219-01
EFF Comp Strongylocentrotus purpuratus 100% 2.50%
2 of 25

Aquatic Bioassay and Consulting Laboratories Client: Oilfield Environmental & Compliance, Inc.

Report ID: OEC0426.072 Project: 2603219 29 North Olive St. Ventura, CA 93001 805-643-5621 www.aquaticbioassay.com Quality Control and Quality Assurance
Negative Control
The negative control met the test acceptability criteria (TAC) described in table 4.

Table 4. Test Acceptability Criteria.

Test Organism Endpoint Test Acceptability Criteria
Strongylocentrotus
purpuratus Fertilization Rate ≥80%

Positive Control
A standard reference toxicant (SRT) functions as a positive control to monitor laboratory performance and the sensitivity of test organisms. The EC50/IC50 should fall within two standard deviations of the historical EC50/IC50 mean, indicating test organism sensitivity was typical. The CETISTM Statistical Analysis Report for the SRT along with the QC chart are found in Appendix B. The concurrent SRT results are summarized in table 5.

Table 5. Standard Reference Toxicant Test Results.

Test Date Test Organism Endpoint Toxicant NOEC IC50 / EC50 Historical
EC50 Mean
(±2 SD Range)
04/15/2026 Strongylocentrotus
purpuratus
Fertilization
Rate
Copper
chloride 18 μg/L 73.46 μg/L 66.95 μg/L
(55.5 – 80.8)
Bold indicates result outside of control limits (±2SD). See attached SRT Control Limit Exceedance Form in Appendix.

References
United States Environmental Protection Agency. 1995. Short-Term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to West Coast Marine and Estuarine Organisms, EPA/600/R-95-136. EPA.gov.

3 of 25

Aquatic Bioassay and Consulting Laboratories Client: Oilfield Environmental & Compliance, Inc.

Report ID: OEC0426.072 Project: 2603219 29 North Olive St. Ventura, CA 93001 805-643-5621 www.aquaticbioassay.com Definitions
NOEC (No Observed Effect Concentration): Highest concentration tested that yields no observed effect.

LOEC (Lowest Observed Effect Concentration): Lowest concentration tested that yields observed effect.

EC50: Effective Concentration which causes an adverse effect to 50% of test organisms.

IC50: Inhibitory Concentration which causes a 50% reduction in growth or reproduction.

EC25: Effective Concentration which causes an adverse effect to 25% of test organisms.

IC25: Inhibitory Concentration which causes a 25% reduction in growth or reproduction.

TUC: Chronic Toxic Unit (100/NOEC).

TUa: Acute Toxic Unit (100/LC50).

Percent Effect: Relative difference between the control and the sample result.

Negative Control: Experimental group, with no treatment, where no effect is anticipated. Serves as the baseline for comparison.

Positive Control: Experimental group, with known treatment, where an effect is anticipated. 4 of 25

Aquatic Bioassay and Consulting Laboratories

29 North Olive St. Ventura, CA 93001 805-643-5621 www.aquaticbioassay.com

Appendix A

CETIStm Statistical Analysis Reports:

Test Samples

5 of 25

CETIS Summary Report Report Date:15 May-26 13:17 (p 1 of 1) Test Code/ID:OEC0426.072urcf / 03-0889-8600
Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Batch ID:02-7907-4049
Start Date:15 Apr-26 18:23
Ending Date:15 Apr-26 19:03
Test Type:Fertilization
Test Length:40m
Protocol:EPA/600/R-95/136 (1995)Diluent:Laboratory Seawater Brine:Not ApplicableSpecies:Strongylocentrotus purpuratus Source:Alexi Gabriel
Analyst:Justin Dyck
Age:NATaxon:Echinoidea
Sample ID:18-2406-4281
Sample Date:15 Apr-26 07:00
Receipt Date:15 Apr-26 12:56
Code:OEC0426.072urcf
Sample Age:11h (4.9 °C)
Source:Bioassay Report
Station:2603219-01 EFF Comp
Client:oilfield Environmental and Compliance, Inc
Project:2603219
Material:Sample Water
CAS (PC):

Comments:Report ID: OEC0426.072
SIngle Comparison Summary
EndpointAnalysis ID Comparison Method Comparison ResultP-Value S 18-3454-7185 Fertilization Rate 100% failed fertilization rateEqual Variance t Two-Sample Test <1.0E-05 1 Test Acceptability
Attribute Test Stat DecisionAnalysis ID Endpoint Lower OverlapUpper TAC Limits

0.95518-3454-7185 0.7Control RespFertilization Rate Yes Passes Criteria<<

0.0494318-3454-7185 <<PMSDFertilization Rate No Passes Criteria0.25 Code Mean Min Max Std DevCount CV%Std ErrConc-%
Fertilization Rate Summary
95% LCL 95% UCL %Effect
0 0.9550 0.9200 0.9800 0.02654 2.77%0.01320.9129 0.9971 0.00%N 100 0.0250 0.0000 0.0500 0.02384 95.22%0.0119-0.0129 0.0629 97.38% CodeConc-%
Fertilization Rate Detail
Rep 1 Rep 2 Rep 3 Rep 4
DBEAAB23A5F85FC37A57A9CC8AF0BFF6MD5:
0 N 0.9500 0.9200 0.9700 0.9800
100 0.0500 0.0400 0.0100 0.0000
CodeConc-%
Fertilization Rate Binomials
Rep 1 Rep 2 Rep 3 Rep 4
0 N 95/100 92/100 97/100 98/100
100 5/100 4/100 1/100 0/100
CETIS™ v2.1.4.6 x64 (006-853-889-6)Convergent Rounding (4 sf) 6 of 25

Report Date:15 May-26 13:17 (p 1 of 2)CETIS Analytical Report Test Code/ID:OEC0426.072urcf / 03-0889-8600 Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Analyzed:07 May-26 12:02
Endpoint:Fertilization Rate CETIS Version:CETISv2.1.4Analysis ID:18-3454-7185 Analysis:Parametric-Two Sample Status Level:1
Edit Date:07 May-26 12:00 MD5 Hash:DBEAAB23A5F85FC37A57A9CC8AF0BFF Editor ID:

Sample ID:18-2406-4281
Sample Date:15 Apr-26 07:00
Receipt Date:15 Apr-26 12:56
Code:OEC0426.072urcf
Sample Age:11h (4.9 °C)
Source:Bioassay Report
Station:2603219-01 EFF Comp
Client:oilfield Environmental and Compliance, Inc
Project:2603219
Material:Sample Water
CAS (PC):

Batch ID:02-7907-4049
Start Date:15 Apr-26 18:23
Ending Date:15 Apr-26 19:03
Test Type:Fertilization
Test Length:40m
Protocol:EPA/600/R-95/136 (1995)Diluent:Laboratory Seawater Brine:Not ApplicableSpecies:Strongylocentrotus purpuratus Source:Alexi Gabriel
Analyst:Justin Dyck
Age:NATaxon:Echinoidea
Comments:Report ID: OEC0426.072
Test Stat Critical P-Value Decision(α:5%)MSDvsControlConc-% Equal Variance t Two-Sample Test
P-Typedf

23.36 1.943 0.1015 TAngular (Corrected)100% failed fertilization rate endpoint 4.94% ANOVA Table
Source Sum Squares Mean Square DF F Stat P-Value Decision(α:5%) Between 2.97421 2.97421 1 545.5 <1.0E-05 Significant Effect Error 0.0327132 0.0054522 6

3.00692 7Total
ANOVA Assumptions Tests
Attribute Test Test Stat Critical P-Value Decision(α:1%)

1.23 13.75 0.3100 Equal VariancesLevene Equality of Variance TestVariance

1.121 13.75 0.3304 Equal VariancesMod Levene Equality of Variance Test

1.72 47.47 0.6669 Equal VariancesVariance Ratio F Test

0.361 3.878 0.4504 Normal DistributionAnderson-Darling A2 TestDistribution

0.1852 0.3313 0.7120 Normal DistributionKolmogorov-Smirnov D Test

0.911 0.6451 0.3608 Normal DistributionShapiro-Wilk W Normality Test Mean Min MaxMedianCountCode Std ErrConc-%CV%%Effect95% LCL 95% UCL Fertilization Rate Summary

0.9550 0.9200 0.98000.960004 0.0132 2.77%0.9129 0.9971N 0.00%

0.0250 0.0000 0.05000.02501004 0.0119 95.22%0.0000 0.0629 97.38% Mean Min MaxMedianCountCode Std ErrConc-%CV%%Effect95% LCL 95% UCL Angular (Corrected) Transformed Summary

1.3640 1.2840 1.42901.371004 0.0317 4.64%0.00%1.2630 1.4640N

0.1443 0.0500 0.22550.15081004 0.0415 57.56%89.42%0.0121 0.2764 CodeConc-%
Fertilization Rate Detail
Rep 1 Rep 2 Rep 3 Rep 4
0 N 0.9500 0.9200 0.9700 0.9800
100 0.0500 0.0400 0.0100 0.0000
CodeConc-%
Angular (Corrected) Transformed Detail
Rep 1 Rep 2 Rep 3 Rep 4
0 N 1.3450 1.2840 1.3970 1.4290
100 0.2255 0.2014 0.1002 0.0500
CETIS™ v2.1.4.6 x64 (006-853-889-6)Convergent Rounding (4 sf) 7 of 25

Report Date:15 May-26 13:17 (p 2 of 2)CETIS Analytical Report Test Code/ID:OEC0426.072urcf / 03-0889-8600 Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Analyzed:07 May-26 12:02
Endpoint:Fertilization Rate CETIS Version:CETISv2.1.4Analysis ID:18-3454-7185 Analysis:Parametric-Two Sample Status Level:1
Edit Date:07 May-26 12:00 MD5 Hash:DBEAAB23A5F85FC37A57A9CC8AF0BFF Editor ID:

CodeConc-%
Fertilization Rate Binomials
Rep 1 Rep 2 Rep 3 Rep 4
0 N 95/100 92/100 97/100 98/100
100 5/100 4/100 1/100 0/100
Graphics

Conc-%
0 N 100
Fe
r
t
i
l
i
z
a
t
i
o
n

R
a
t
e

1.0 0.9

0.8 0.7

0.6 0.5

0.4 0.3

0.2 0.1

0.0 ▼

Rankits

1.00.50.0-0.5-1.0
Co
r
r
.

A
n
g
l
e

0.10 0.05

0.00 -0.05
-0.10
CETIS™ v2.1.4.6 x64 (006-853-889-6)Convergent Rounding (4 sf) 8 of 25

CETIS Measurement Report Report Date:15 May-26 13:17 (p 1 of 1) Test Code/ID:OEC0426.072urcf / 03-0889-8600
Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Sample ID:18-2406-4281
Sample Date:15 Apr-26 07:00
Receipt Date:15 Apr-26 12:56
Code:OEC0426.072urcf
Sample Age:11h (4.9 °C)
Source:Bioassay Report
Station:2603219-01 EFF Comp
Client:oilfield Environmental and Compliance, Inc
Project:2603219
Material:Sample Water
CAS (PC):

Batch ID:02-7907-4049
Start Date:15 Apr-26 18:23
Ending Date:15 Apr-26 19:03
Test Type:Fertilization
Test Length:40m
Protocol:EPA/600/R-95/136 (1995)Diluent:Laboratory Seawater Brine:Not ApplicableSpecies:Strongylocentrotus purpuratus Source:Alexi Gabriel
Analyst:Justin Dyck
Age:NATaxon:Echinoidea
Comments:Report ID: OEC0426.072
Code Mean Min Max Std DevCount CV%Conc-%
Dissolved Oxygen-mg/L
Std Err95% LCL 95% UCL QA Count
0 8 8 8 02 0.00%088 0N
100 7.4 7.4 7.4 02 0.00%07.389 7.411 0

7.7 7.4 8Overall4 0 (0%)7.149 8.251 0.1732 0.3464 4.50% Code Mean Min Max Std DevCount CV%Conc-%
pH-Units
Std Err95% LCL 95% UCL QA Count
0 7.8 7.8 7.8 02 0.00%07.787 7.813 0N
100 7.7 7.7 7.7 02 0.00%07.698 7.702 0

7.75 7.7 7.8Overall4 0 (0%)7.658 7.842 0.02887 0.05774 0.75% Code Mean Min Max Std DevCount CV%Conc-%
Salinity-ppt
Std Err95% LCL 95% UCL QA Count
0 34 34 34 02 0.00%03434 0N
100 34 34 34 02 0.00%03434 0
34 34 34Overall4 0 (0%)34 34 0 0 0.00%
Code Mean Min Max Std DevCount CV%Conc-%
Temperature-°C
Std Err95% LCL 95% UCL QA Count
0 14.8 14.8 14.8 02 0.00%014.78 14.82 0N
100 14.8 14.8 14.8 02 0.00%014.78 14.82 0

14.8 14.8 14.8Overall4 0 (0%)14.8 14.8 0 0 0.00%
CETIS™ v2.1.4.6 x64 (006-853-889-6)Convergent Rounding (4 sf) 9 of 25

Aquatic Bioassay and Consulting Laboratories

29 North Olive St. Ventura, CA 93001 805-643-5621 www.aquaticbioassay.com

Appendix B

CETIStm Statistical Analysis Reports:

Standard Reference Toxicant and QC Charts

10 of 25

CETIS Summary Report Report Date:08 May-26 16:00 (p 1 of 1) Test Code/ID:URCF041526 / 16-7007-1368
Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Batch ID:21-3927-4785
Start Date:15 Apr-26 18:23
Ending Date:15 Apr-26 19:03
Test Type:Fertilization
Test Length:40m
Protocol:EPA/600/R-95/136 (1995)Diluent:Laboratory Seawater Brine:Not ApplicableSpecies:Strongylocentrotus purpuratus Source:Alexi Gabriel
Analyst:Justin Dyck
Age:NATaxon:Echinoidea
Sample ID:20-1243-7687
Sample Date:15 Apr-26 18:23
Receipt Date:15 Apr-26 18:23
Code:URCF041526
Sample Age:---
Source:Reference Toxicant
Station:REF TOX
Client:Internal Lab
Project:

Material:Copper chloride
CAS (PC):

Multiple Comparison Summary
NOEL LOEL TOELEndpointAnalysis ID Comparison Method PMSD✓S 18 32 2400-2600-5413 7.73%Fertilization Rate Dunnett Multiple Comparison Test 1 95% LCL 95% UCL
Point Estimate Summary
EndpointAnalysis ID Point Estimate Method µg/LLevel✓S
EC15 28.65 23.21 38.5806-2198-6852 Linear Interpolation (ICPIN)Fertilization Rate 1 EC20 34.09 26.73 43.19
EC25 39.55 31.15 52.39
EC40 55.94 46.35 76.66
EC50 73.46 55.72 91.06
Test Acceptability
Attribute Test Stat DecisionAnalysis ID Endpoint Lower OverlapUpper TAC Limits

0.967500-2600-5413 0.7Control RespFertilization Rate Yes Passes Criteria<<

0.967506-2198-6852 0.7Control RespFertilization Rate Yes Passes Criteria<<

0.0773200-2600-5413 <<PMSDFertilization Rate No Passes Criteria0.25 Code Mean Min Max Std DevCount CV%Std ErrConc-µg/L
Fertilization Rate Summary
95% LCL 95% UCL %Effect
0 0.9675 0.9500 0.9900 0.01714 1.77%0.00850.9403 0.9947 0.00%N 18 0.9175 0.9000 0.9500 0.02364 2.58%0.01180.8799 0.9551 5.17% 32 0.7925 0.7400 0.8700 0.06024 7.60%0.03010.6967 0.8883 18.09% 56 0.5800 0.5000 0.7100 0.09494 16.36%0.04740.4290 0.7310 40.05% 100 0.3375 0.1900 0.4500 0.11184 33.12%0.05590.1597 0.5153 65.12% 180 0.0350 0.0000 0.0900 0.04364 124.54%0.0218-0.0344 0.1044 96.38% CodeConc-µg/L
Fertilization Rate Detail
Rep 1 Rep 2 Rep 3 Rep 4
C3A28058ADEB30680414D159D750D0C8MD5:
0 N 0.9500 0.9900 0.9600 0.9700
18 0.9500 0.9200 0.9000 0.9000
32 0.8100 0.7400 0.8700 0.7500
56 0.7100 0.5900 0.5000 0.5200
100 0.3200 0.4500 0.3900 0.1900
180 0.0000 0.0500 0.0900 0.0000
CodeConc-µg/L
Fertilization Rate Binomials
Rep 1 Rep 2 Rep 3 Rep 4
0 N 95/100 99/100 96/100 97/100
18 95/100 92/100 90/100 90/100
32 81/100 74/100 87/100 75/100
56 71/100 59/100 50/100 52/100
100 32/100 45/100 39/100 19/100
180 0/100 5/100 9/100 0/100
CETIS™ v2.1.4.6 x64 (006-853-889-6)Convergent Rounding (4 sf) 11 of 25

Report Date:08 May-26 15:59 (p 1 of 3)CETIS Analytical Report Test Code/ID:URCF041526 / 16-7007-1368 Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Analyzed:06 May-26 13:14
Endpoint:Fertilization Rate CETIS Version:CETISv2.1.4Analysis ID:00-2600-5413 Analysis:Parametric-Control vs Treatments Status Level:1 Edit Date:06 May-26 13:13 MD5 Hash:C3A28058ADEB30680414D159D750D0C8 Editor ID:

Sample ID:20-1243-7687
Sample Date:15 Apr-26 18:23
Receipt Date:15 Apr-26 18:23
Code:URCF041526
Sample Age:---
Source:Reference Toxicant
Station:REF TOX
Client:Internal Lab
Project:

Material:Copper chloride
CAS (PC):

Batch ID:21-3927-4785
Start Date:15 Apr-26 18:23
Ending Date:15 Apr-26 19:03
Test Type:Fertilization
Test Length:40m
Protocol:EPA/600/R-95/136 (1995)Diluent:Laboratory Seawater Brine:Not ApplicableSpecies:Strongylocentrotus purpuratus Source:Alexi Gabriel
Analyst:Justin Dyck
Age:NATaxon:Echinoidea
Test Stat Critical P-Value Decision(α:5%)MSDvsControlConc-µg/L Dunnett Multiple Comparison Test
P-Typedf

1.727 2.407 0.1585 0.1629 Non-Significant Effect18Negative Control 6 CDF

4.472 2.407 0.1585 0.0007 Significant Effect32*6 CDF

8.026 2.407 0.1585 2.7E-05 Significant Effect56*6 CDF

11.85 2.407 0.1585 2.7E-05 Significant Effect100*6 CDF

18.81 2.407 0.1585 2.7E-05 Significant Effect180*6 CDF
NOEL LOEL Tox UnitsTOELAlt HypData Transform PMSDMSDu
18 32 7.73%---24C > TAngular (Corrected)0.0748
ANOVA Table
Source Sum Squares Mean Square DF F Stat P-Value Decision(α:5%) Between 4.25988 0.851976 5 98.31 <1.0E-05 Significant Effect Error 0.155997 0.0086665 18

4.41587 23Total
ANOVA Assumptions Tests
Attribute Test Test Stat Critical P-Value Decision(α:1%)

4.263 15.09 0.5122 Equal VariancesBartlett Equality of Variance TestVariance

1.854 4.248 0.1529 Equal VariancesLevene Equality of Variance Test

1.448 4.248 0.2552 Equal VariancesMod Levene Equality of Variance Test

0.258 3.878 0.7447 Normal DistributionAnderson-Darling A2 TestDistribution

0.6741 2.576 0.5002 Normal DistributionD'Agostino Kurtosis Test

0.2312 2.576 0.8171 Normal DistributionD'Agostino Skewness Test

0.5079 9.21 0.7757 Normal DistributionD'Agostino-Pearson K2 Omnibus Test

0.09634 0.2056 0.9025 Normal DistributionKolmogorov-Smirnov D Test

0.976 0.884 0.8115 Normal DistributionShapiro-Wilk W Normality Test Mean Min MaxMedianCountCode Std ErrConc-µg/L CV%%Effect95% LCL 95% UCL Fertilization Rate Summary

0.9675 0.9500 0.99000.965004 0.0085 1.77%0.9403 0.9947N 0.00%

0.9175 0.9000 0.95000.9067184 0.0118 2.58%0.8799 0.9551 5.17%

0.7925 0.7400 0.87000.7800324 0.0301 7.60%0.6967 0.8883 18.09%

0.5800 0.5000 0.71000.5550564 0.0474 16.36%0.4290 0.7310 40.05%

0.3375 0.1900 0.45000.35501004 0.0559 33.12%0.1597 0.5153 65.12%

0.0350 0.0000 0.09000.01671804 0.0218 124.54%0.0000 0.1044 96.38% CETIS™ v2.1.4.6 x64 (006-853-889-6)Convergent Rounding (4 sf) 12 of 25

Report Date:08 May-26 15:59 (p 2 of 3)CETIS Analytical Report Test Code/ID:URCF041526 / 16-7007-1368 Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Analyzed:06 May-26 13:14
Endpoint:Fertilization Rate CETIS Version:CETISv2.1.4Analysis ID:00-2600-5413 Analysis:Parametric-Control vs Treatments Status Level:1 Edit Date:06 May-26 13:13 MD5 Hash:C3A28058ADEB30680414D159D750D0C8 Editor ID:

Mean Min MaxMedianCountCode Std ErrConc-µg/L CV%%Effect95% LCL 95% UCL Angular (Corrected) Transformed Summary

1.3960 1.3450 1.47101.383004 0.0272 3.89%0.00%1.3090 1.4820N

1.2820 1.2490 1.34501.2610184 0.0227 3.54%8.14%1.2100 1.3540

1.1010 1.0360 1.20201.0830324 0.0384 6.97%21.09%0.9789 1.2230

0.8672 0.7854 1.00200.8406564 0.0490 11.30%37.86%0.7113 1.0230

0.6155 0.4510 0.73530.63791004 0.0613 19.92%55.89%0.4204 0.8106

0.1576 0.0500 0.30470.10851804 0.0642 81.44%88.71%-0.0466 0.3617 CodeConc-µg/L
Fertilization Rate Detail
Rep 1 Rep 2 Rep 3 Rep 4
0 N 0.9500 0.9900 0.9600 0.9700
18 0.9500 0.9200 0.9000 0.9000
32 0.8100 0.7400 0.8700 0.7500
56 0.7100 0.5900 0.5000 0.5200
100 0.3200 0.4500 0.3900 0.1900
180 0.0000 0.0500 0.0900 0.0000
CodeConc-µg/L
Angular (Corrected) Transformed Detail
Rep 1 Rep 2 Rep 3 Rep 4
0 N 1.3450 1.4710 1.3690 1.3970
18 1.3450 1.2840 1.2490 1.2490
32 1.1200 1.0360 1.2020 1.0470
56 1.0020 0.8759 0.7854 0.8054
100 0.6013 0.7353 0.6745 0.4510
180 0.0500 0.2255 0.3047 0.0500
CodeConc-µg/L
Fertilization Rate Binomials
Rep 1 Rep 2 Rep 3 Rep 4
0 N 95/100 99/100 96/100 97/100
18 95/100 92/100 90/100 90/100
32 81/100 74/100 87/100 75/100
56 71/100 59/100 50/100 52/100
100 32/100 45/100 39/100 19/100
180 0/100 5/100 9/100 0/100
CETIS™ v2.1.4.6 x64 (006-853-889-6)Convergent Rounding (4 sf) 13 of 25

Report Date:08 May-26 15:59 (p 3 of 3)CETIS Analytical Report Test Code/ID:URCF041526 / 16-7007-1368 Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Analyzed:06 May-26 13:14
Endpoint:Fertilization Rate CETIS Version:CETISv2.1.4Analysis ID:00-2600-5413 Analysis:Parametric-Control vs Treatments Status Level:1 Edit Date:06 May-26 13:13 MD5 Hash:C3A28058ADEB30680414D159D750D0C8 Editor ID:

Graphics

Conc-µg/L
0 N 18 32 56 100 180
Fe
r
t
i
l
i
z
a
t
i
o
n

R
a
t
e

1.0 0.9

0.8 0.7

0.6 0.5

0.4 0.3

0.2 0.1

0.0 ▼

Rankits

1.51.00.50.0-0.5-1.0-1.5
Co
r
r
.

A
n
g
l
e

0.15 0.10

0.05 0.00
-0.05
-0.10
-0.15
CETIS™ v2.1.4.6 x64 (006-853-889-6)Convergent Rounding (4 sf) 14 of 25

CETIS Analytical Report Report Date:08 May-26 15:59 (p 1 of 2) Test Code/ID:URCF041526 / 16-7007-1368
Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Analyzed:06 May-26 13:14
Endpoint:Fertilization Rate CETIS Version:CETISv2.1.4Analysis ID:06-2198-6852 Analysis:Linear Interpolation (ICPIN)Status Level:1
Edit Date:06 May-26 13:13 MD5 Hash:C3A28058ADEB30680414D159D750D0C8 Editor ID:

X Transform Y Transform Resamples Exp 95% CL
Linear Interpolation Options
MethodSeed
Linear Linear 280 Yes Two-Point Interpolation0
Sample ID:20-1243-7687
Sample Date:15 Apr-26 18:23
Receipt Date:15 Apr-26 18:23
Code:URCF041526
Sample Age:---
Source:Reference Toxicant
Station:REF TOX
Client:Internal Lab
Project:

Material:Copper chloride
CAS (PC):

Batch ID:21-3927-4785
Start Date:15 Apr-26 18:23
Ending Date:15 Apr-26 19:03
Test Type:Fertilization
Test Length:40m
Protocol:EPA/600/R-95/136 (1995)Diluent:Laboratory Seawater Brine:Not ApplicableSpecies:Strongylocentrotus purpuratus Source:Alexi Gabriel
Analyst:Justin Dyck
Age:NATaxon:Echinoidea
Point Estimates
Level 95% LCL 95% UCLµg/L
EC15 28.65 23.21 38.58
EC20 34.09 26.73 43.19
EC25 39.55 31.15 52.39
EC40 55.94 46.35 76.66
EC50 73.46 55.72 91.06
Mean Min MaxCountCode ΣA/ΣB
Calculated Variate(A/B)
Conc-µg/L CV%%Effect
Fertilization Rate Summary
Mean %Effect
Isotonic Variate
Median

0.9675 387/4000.9500 0.990004N 0.00%1.77%0.9675 0.00%0.9650

0.9175 367/4000.9000 0.9500184 5.17%2.58%0.9175 5.17%0.9067

0.7925 317/4000.7400 0.8700324 18.09%7.60%0.7925 18.09%0.7800

0.5800 232/4000.5000 0.7100564 40.05%16.36%0.5800 40.05%0.5550

0.3375 135/4000.1900 0.45001004 65.12%33.12%0.3375 65.12%0.3550

0.0350 14/4000.0000 0.09001804 96.38%124.54%0.0350 96.38%0.0167 CodeConc-µg/L
Fertilization Rate Detail
Rep 1 Rep 2 Rep 3 Rep 4
0 N 0.9500 0.9900 0.9600 0.9700
18 0.9500 0.9200 0.9000 0.9000
32 0.8100 0.7400 0.8700 0.7500
56 0.7100 0.5900 0.5000 0.5200
100 0.3200 0.4500 0.3900 0.1900
180 0.0000 0.0500 0.0900 0.0000
CodeConc-µg/L
Fertilization Rate Binomials
Rep 1 Rep 2 Rep 3 Rep 4
0 N 95/100 99/100 96/100 97/100
18 95/100 92/100 90/100 90/100
32 81/100 74/100 87/100 75/100
56 71/100 59/100 50/100 52/100
100 32/100 45/100 39/100 19/100
180 0/100 5/100 9/100 0/100
CETIS™ v2.1.4.6 x64 (006-853-889-6)Convergent Rounding (4 sf) 15 of 25

CETIS Analytical Report Report Date:08 May-26 15:59 (p 2 of 2) Test Code/ID:URCF041526 / 16-7007-1368
Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Analyzed:06 May-26 13:14
Endpoint:Fertilization Rate CETIS Version:CETISv2.1.4Analysis ID:06-2198-6852 Analysis:Linear Interpolation (ICPIN)Status Level:1
Edit Date:06 May-26 13:13 MD5 Hash:C3A28058ADEB30680414D159D750D0C8 Editor ID:

Graphics

Conc-µg/L
180160140120100806040200
Fe
r
t
i
l
i
z
a
t
i
o
n

R
a
t
e

0.9 0.8

0.7 0.6

0.5 0.4

0.3 0.2

0.1 0.0
CETIS™ v2.1.4.6 x64 (006-853-889-6)Convergent Rounding (4 sf) 16 of 25

CETIS Measurement Report Report Date:08 May-26 16:00 (p 1 of 1) Test Code/ID:URCF041526 / 16-7007-1368
Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Sample ID:20-1243-7687
Sample Date:15 Apr-26 18:23
Receipt Date:15 Apr-26 18:23
Code:URCF041526
Sample Age:---
Source:Reference Toxicant
Station:REF TOX
Client:Internal Lab
Project:

Material:Copper chloride
CAS (PC):

Batch ID:21-3927-4785
Start Date:15 Apr-26 18:23
Ending Date:15 Apr-26 19:03
Test Type:Fertilization
Test Length:40m
Protocol:EPA/600/R-95/136 (1995)Diluent:Laboratory Seawater Brine:Not ApplicableSpecies:Strongylocentrotus purpuratus Source:Alexi Gabriel
Analyst:Justin Dyck
Age:NATaxon:Echinoidea
Code Mean Min Max Std DevCount CV%Conc-µg/L
Dissolved Oxygen-mg/L
Std Err95% LCL 95% UCL QA Count
0 8 8 8 02 0.00%088 0N
18 8 8 8 02 0.00%088 0
32 8 8 8 02 0.00%088 0
56 8 8 8 02 0.00%088 0
100 8 8 8 02 0.00%088 0
180 8 8 8 02 0.00%088 0
8 8 8Overall12 0 (0%)8 8 0 0 0.00%
Code Mean Min Max Std DevCount CV%Conc-µg/L
pH-Units
Std Err95% LCL 95% UCL QA Count
0 7.8 7.8 7.8 02 0.00%07.787 7.813 0N
18 7.8 7.8 7.8 02 0.00%07.787 7.813 0
32 7.8 7.8 7.8 02 0.00%07.787 7.813 0
56 7.8 7.8 7.8 02 0.00%07.787 7.813 0
100 7.8 7.8 7.8 02 0.00%07.787 7.813 0
180 7.8 7.8 7.8 02 0.00%07.787 7.813 0

7.8 7.8 7.8Overall12 0 (0%)7.8 7.8 0 0 0.00%
Code Mean Min Max Std DevCount CV%Conc-µg/L
Salinity-ppt
Std Err95% LCL 95% UCL QA Count
0 34 34 34 02 0.00%03434 0N
18 34 34 34 02 0.00%03434 0
32 34 34 34 02 0.00%03434 0
56 34 34 34 02 0.00%03434 0
100 34 34 34 02 0.00%03434 0
180 34 34 34 02 0.00%03434 0
34 34 34Overall12 0 (0%)34 34 0 0 0.00%
Code Mean Min Max Std DevCount CV%Conc-µg/L
Temperature-°C
Std Err95% LCL 95% UCL QA Count
0 14.8 14.8 14.8 02 0.00%014.78 14.82 0N
18 14.8 14.8 14.8 02 0.00%014.78 14.82 0
32 14.8 14.8 14.8 02 0.00%014.78 14.82 0
56 14.8 14.8 14.8 02 0.00%014.78 14.82 0
100 14.8 14.8 14.8 02 0.00%014.78 14.82 0
180 14.8 14.8 14.8 02 0.00%014.78 14.82 0

14.8 14.8 14.8Overall12 0 (0%)14.8 14.8 0 0 0.00%
CETIS™ v2.1.4.6 x64 (006-853-889-6)Convergent Rounding (4 sf) 17 of 25

Report Date:08 May-26 16:00 ( 1 of 1)CETIS QC Plot
Organism:Strongylocentrotus purpuratus
Protocol:EPA/600/R-95/136 (1995)
Material:Copper chloride
Endpoint:Fertilization Rate Source:Reference Toxicant-REF Test Type:Fertilization
-2s Warning Limit:55.5
+2s Warning Limit:80.8
-3s Action Limit:50.5
+3s Action Limit:88.8
Mean:66.95
CV:9.42%Sigma:NA
Count:20
Purple Sea Urchin Sperm Cell Fertilization Test
Fertilization Rate Endpoint

Lognormal Levey-Jennings Plot
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
EC
5 0
-
µ
g
/
L

C
o
p
p
e
r

c
h
l
o
r
i
d
e
90 85
80 75
70 65
60 55
50 Mean
-2s
+2s
-3s
+3s
Purple Sea Urchin Sperm Cell Fertilization Test Aquatic Bioassay & Consulting Labs, Inc.

Year QC Data
Quality Control Data
Month Day Delta Sigma Warning Action Test ID Analysis IDPointTime 2025 74.12Nov18 7.164 1.081 06-7107-2710 05-4299-1802119:15

71.7720 4.813 0.7382 16-2466-3113 18-4989-2635216:00

54.93Dec3 -12.02 -2.105 (-)20-2088-5366 01-1731-2532316:10

84.6812 17.72 2.497 (+)06-8970-0569 12-1881-8953419:25

64.5816 -2.375 -0.3841 20-6957-2466 04-7187-6859516:38

67.4829 0.5246 0.083 05-0764-4524 05-7620-3995617:37
2026 71.03Jan8 4.075 0.6282 04-0777-0060 15-1988-1704716:32

76.5914 9.636 1.43 13-0392-2157 13-1645-8366815:30

59.1127 -7.84 -1.324 15-0195-6964 20-9763-1874915:52

64.5829 -2.377 -0.3844 04-6580-5948 04-0141-49821016:45

66.07Feb3 -0.8832 -0.1412 08-7298-9655 06-0980-52051116:50

64.612 -2.352 -0.3803 05-6535-0115 03-0272-95321216:32

67.6518 0.6934 0.1096 11-2693-7136 11-8727-83171316:45

64.6220 -2.33 -0.3766 18-0438-5024 11-8939-65591418:35

61.8124 -5.146 -0.8504 04-5696-7124 03-4355-47091516:40

61.79Mar6 -5.164 -0.8535 16-5062-9548 02-0815-51171617:03

64.9310 -2.021 -0.326 05-1879-2401 16-5701-37081716:55

67.6925 0.7339 0.1159 19-0004-1598 19-4204-98341815:36

66.77Apr7 -0.1828 -0.02907 16-8982-9917 04-8417-27611917:05

70.0813 3.126 0.4853 15-2751-6007 07-3416-65832017:06

73.4615 6.51 0.9868 16-7007-1368 06-2198-68522118:23
CETIS™ v2.1.4.6 x64006-853-889-6 QA:________Analyst:________ 18 of 25
JD

Aquatic Bioassay and Consulting Laboratories

29 North Olive St. Ventura, CA 93001 805-643-5621 www.aquaticbioassay.com

Appendix C

Raw Data Bench Sheets

19 of 25

20 of 25

21 of 25

22 of 25

Aquatic Bioassay and Consulting Laboratories

29 North Olive St. Ventura, CA 93001 805-643-5621 www.aquaticbioassay.com

Appendix D

Chain of Custody and Sample Receipt Summary

23 of 25

24 of 25

25 of 25

Sample Receipt
Work Order Review is Complete
Work Order
2603219 Refresh
Client Name Temp °C Thermometer
ID Refrigerator(s)COC Received Login
City of Pismo Beach Public Works 10.8 3 8, APPL, WECK, PACE 04 /15 /2026 10:05 04 /15 /2026 09:48
Recorded Corrected, Acceptable Range 0°C to
6°C (See Exception Notes Below)
Sample Transport
OECCourier/Sampler After Hours Drop Off
Delivery (Other than OEC) Shipment Carrier Tracking#
Custody Seals None Present
Cooler(s) Present, Intact Present, Not Intact None
Sample(s) Present Intact Present, Not Intact None
Condition/Preservation Yes No N/A
Received On Ice Within Range (Acceptable)Completed COCs Received with Sample(s) Received Outside Range(Acceptable)Correct Container(s) Preserve for Analysis Direct from Field on Ice Container(s) Intact and Good Condition Ambient: Air or Filter Matrix Container Label(s) Consistent with COC Received Ambient, Placed on Ice OEC Preservation Added** Sample Temperature Accetable for Analysis Sample Quantity Sufficent Received Outside Range [Exception]*
Insufficient Ice or Unknown
Excessive Free Liquid
2603219_receipt http://sample.oec.com/index.php
1 of 2 4/16/2026, 9:35 AM

Containers, COC Changes, And/Or Corrections
Cotaniner
ID (COC)Container Description Home Matrix Preservative pH/Chlorine /Sulfur Comments
01A 1Gallon Poly Cubitainer
Aquatic Bioassay &
Consulting Laboratories,
Inc.

Water
01B 1000mL Glass (Amber)McCampbell Analytical Water
01C 1000mL Glass (Amber)McCampbell Analytical Water
01D 1000mL Glass (Amber)WECK Laboratories Water
01E 1000mL Glass (Amber)WECK Laboratories Water
01F 1000mL Glass (Amber)WECK Laboratories Water
01G 1000mL Glass (Amber)WECK Laboratories Water
01H 1000mL Glass (Amber)Fridge 8 - Walk-In Water
01I 1000mL Glass (Amber)McCampbell Analytical Water
01J 1000mL Poly HNO3 Pace Analytical
Services - Pittsburgh Water
01K 250mL Glass (Amber)Fridge 8 - Walk-In Water
01L 125mL Poly (NH4)2SO4 + NH4OH
buffer Fridge 8 - Walk-In Water
01M 250mL Poly NaOH Fridge 8 - Walk-In Water
01N 250mL Poly H2SO4 Fridge 8 - Walk-In Water
01O 250mL Poly HNO3 WECK Laboratories Water
01P 40mL VOA HCl WECK Laboratories Water
VOA Container Free of Headspace
01Q 40mL VOA HCl WECK Laboratories Water
VOA Container Free of Headspace
01R 40mL VOA HCl WECK Laboratories Water
VOA Container Free of Headspace
01S 40mL VOA WECK Laboratories Water
VOA Container Free of Headspace
01T 40mL VOA WECK Laboratories Water
VOA Container Free of Headspace
01U 1000mL Poly Fridge 8 - Walk-In Water
01V 1000mL Glass (Amber) HCl WECK Laboratories Water
02A 40mL VOA (Amber) Ascorbic/
Maleic WECK Laboratories Water
VOA Container Free of Headspace
02B 40mL VOA (Amber) Ascorbic/
Maleic WECK Laboratories Water
VOA Container Free of Headspace
02C 250mL Poly H2SO4 Fridge 8 - Walk-In Water
03A 40mL VOA (Amber) Ascorbic/
Maleic WECK Laboratories Water
VOA Container Free of Headspace
Receipt Login By:

DWM-04/16/26 08:11
Receipt Reviewed By:

LGB-04/16/26 09:35
2603219_receipt http://sample.oec.com/index.php
2 of 2 4/16/2026, 9:35 AM

 









  





 

  





 

 !"!
#$
%&" ''!'()%&" '"*




  

+,-



.
/!&" 
0

 1.


 /!"
#$
%2*'*3*4'/ ()%2*'*3*4'*!
#

5
 6
%+
-

#1
201
7
1.



5
6 7
1.

3









!


"# $%&




'
$() $)

*

)
++










/4

4'*/*%
8,


9
-1
 
/4

4'*/*%
8,


9,.%
-.:
1
#-;6
9,
/4

4'*/*%
8,


9,.% 1'4,> 
$



*'!>
.49,
4
4'*/*%
$
+!?/"?''*
8,



9,.
*'!

 ?



9,
/4

4'*/*%
8,


9,.*&#..#:.






283/
,@..2
-
3 23/
,@..2
-
3 2(3/
,@..2
-
3 2@3/
,@..2
-
3 2
3'"
,#

;
;
2A3!
,>
;23!
,>
;2
3!
,>

293!
,>
2>3/
,@..2
-
3;
'
$() $)

(

)

++
$,








/4

4'*/*%
8,


"'!8:8:#






23!
,>
2
-
3.

-?
2:3!
,>
2
-
3.

-?

-.



/

 B1.$:
8
 B1.$:
8

:
8
8
:

Jayden Yamamoto 4/16/2026 4/16/2026FedEx
FedEx

 















!


"# $%&




'
$() $)



)$%

0








/4

4'*/*%
8,


"'!8:8:#






23!
,>
2
-
3.

-?

-.

/

 B1.$:
8
 B1.$:
8

:
8
8
:

Jayden Yamamoto 4/16/2026 FedEx 4/16/2026
FedEx

Trip BlankAQ-03

Trip Blankaq-03 x

[TOC_1]Cover Page[
Oilfield Environmental & Compliance, Inc.

Analytical Report
Project: Semi-Annual Sampling
Pismo Beach, CA 93449
760 Mattie Road
City of Pismo Beach Public Works
Jake Smith
OEC Work Order:2603270
Report Date: April 27, 2026 17:12
[email protected]
Kimberly Pluma, Project Manager
Enclosed is an analytical report for the above referenced project. The samples included in this report were received on April 15, 2026 10:05 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:

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-IAF Communiqué dated April 2017)
307 Roemer Way, Suite 300
Santa Maria, CA 93454
client.oec.com\reports
CA-ELAP 2438, TNI 02666
TNI 2016 & ISO/IEC 17025:2017
www.oecusa.com
Fax:

Main:
(805) 925-3376
(805) 922-4772

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Semi-Annual Sampling
04/27/2026 17:12Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603270
WO & Reported:

Sample ID Laboratory ID Client Matrix Date Sampled
Sample Summary
Date Received
[TOC_1]Sample Summary[TOC]
Lab Matrix
Final Effluent Composite 2603270-01 04/15/2026 07:00 04/15/2026 10:05WaterWater Final Effluent Grab 2603270-02 04/15/2026 06:50 04/15/2026 10:05WaterWater [TOC_1]Sample Batch Preparation Summary[Sample Batch Preparation Summary Analysis Preparation Date/TimeBatch ID
Total Metals by ICP
200.7 Total 04/16/2026 08:49B6D0510
Volatile Organic Compounds by GC/MS
624.1 VOC 04/16/2026 07:27B6D0530
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Semi-Annual Sampling
04/27/2026 17:12Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603270
WO & Reported:

Analytical Report for Samples
[TOC_1]2603270-01 (Water)[TOC]
Final Effluent Composite Sampled : 04/15/26 07:00
Lab ID : 2603270-01
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult [TOC_2]Total Metals by ICP[TOC]
Total Metals by ICP
EPA 200.70.0067 B6D0510 04/20/26 14:56mg/L 1Copper0.010 J0.0050 ND """""Nickel 0.0100.0050
[TOC_1]2603270-02 (Water)[TOC]
Final Effluent Grab Sampled : 04/15/26 06:50
Lab ID : 2603270-02
Matrix : Water
Sample ID :

Sampled by : Jack Armstrong
Field Data : NA
MDL Units Dilution Notes MethodAnalyzedRLBatchAnalyteResult R-06
[TOC_2]Volatile Organic Compounds by GC/MS[TOC]
Volatile Organic Compounds by GC/MS
EPA 624.126B6D053004/16/26 13:46ug/L 5Bromodichloromethane2.5 B-02n1.2 "8.6 """"Dibromochloromethane 2.51.2
"""( 89 - 119 )106 %Surrogate: Dibromofluoromethane
"""( 87 - 107 )91 %Surrogate: Toluene-d8
"""( 94 - 112 )110 %Surrogate: 4-Bromofluorobenzene
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Semi-Annual Sampling
04/27/2026 17:12Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603270
WO & Reported:

Total Metals by ICP - Quality Control[TOC_1]
Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch B6D0510 - EPA 200.7[TOC]
Batch B6D0510 - EPA 200.7 Preparation: EPA 200.7 04/16/26 08:49 Blank (B6D0510-BLK1)
[TOC_3]Blank (B6D0510-BLK1)[TOC]
Analyzed: 04/20/26 13:10
Copper mg/LND0.0100.0050
Nickel "ND 0.0100.0050
LCS (B6D0510-BS1)
[TOC_3]LCS (B6D0510-BS1)[TOC]
Analyzed: 04/20/26 13:16
Copper mg/L2.04 0.010 2.00 85-1151020.0050
Nickel "2.06 0.010 2.00 85-1151030.0050
LCS Dup (B6D0510-BSD1)
[TOC_3]LCS Dup (B6D0510-BSD1)[TOC]
Analyzed: 04/20/26 13:19
Copper mg/L1.91 0.010 2.00 2085-11596 70.0050
Nickel "1.94 0.010 2.00 2085-11597 60.0050
Duplicate (B6D0510-DUP1)Source: 2603273-01
[TOC_3]Duplicate (B6D0510-DUP1)[TOC]
Analyzed: 04/20/26 13:27
Copper mg/L0.0184 0.010 0.0190 2030.0050
Nickel "0.0298 0.010 0.0276 2080.0050
Matrix Spike (B6D0510-MS1)Source: 2603273-01
[TOC_3]Matrix Spike (B6D0510-MS1)[TOC]
Analyzed: 04/20/26 13:21
Copper mg/L2.18 0.010 2.00 0.0190 70-1301080.0050
Nickel "2.10 0.010 2.00 0.0276 70-1301030.0050
Matrix Spike (B6D0510-MS2)Source: 2603263-03 Analyzed: 04/20/26 13:24 Copper mg/L2.05 0.010 2.00 ND 70-1301020.0050
Nickel "2.04 0.010 2.00 ND 70-1301020.0050
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Semi-Annual Sampling
04/27/2026 17:12Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603270
WO & Reported:

Volatile Organic Compounds by GC/MS - Quality Control[TOC_1] Result RL Units
Level
Spike
Result
Source %REC %REC
Limits

RPD RPD
Limit
Notes Analyte MDL
[TOC_2]Batch B6D0530 - EPA 624.1[TOC]
Batch B6D0530 - EPA 624.1 Preparation: EPA 624.1 04/16/26 07:27 Blank (B6D0530-BLK1)
[TOC_3]Blank (B6D0530-BLK1)[TOC]
Analyzed: 04/16/26 09:23
Bromodichloromethane ug/L0.300 0.50 B-02, J0.25
Dibromochloromethane "ND 0.500.25
"12.5 89-119Surrogate: Dibromofluoromethane 9812.2
"12.5 S-GC87-107Surrogate: Toluene-d8 8410.5
"12.5 94-112Surrogate: 4-Bromofluorobenzene 10813.4
LCS (B6D0530-BS1)
[TOC_3]LCS (B6D0530-BS1)[TOC]
Analyzed: 04/16/26 08:06
Bromodichloromethane ug/L11.6 0.50 10.0 65-1351160.25
Dibromochloromethane "10.8 0.50 10.0 70-1351080.25
"12.5 89-119Surrogate: Dibromofluoromethane 10012.5
"12.5 87-107Surrogate: Toluene-d8 9912.4
"12.5 94-112Surrogate: 4-Bromofluorobenzene 11013.7
LCS Dup (B6D0530-BSD1)
[TOC_3]LCS Dup (B6D0530-BSD1)[TOC]
Analyzed: 04/16/26 08:32
Bromodichloromethane ug/L9.04 0.50 10.0 20 QR-0265-13590 250.25 Dibromochloromethane "13.2 0.50 10.0 2070-135132 200.25 "12.5 89-119Surrogate: Dibromofluoromethane 10212.7
"12.5 87-107Surrogate: Toluene-d8 9111.4
"12.5 94-112Surrogate: 4-Bromofluorobenzene 9912.4
Duplicate (B6D0530-DUP1)Source: 2603268-01
[TOC_3]Duplicate (B6D0530-DUP1)[TOC]
Analyzed: 04/16/26 12:02
Bromodichloromethane ug/LND0.50 ND 200.25
Dibromochloromethane "ND 0.50 ND 200.25
"12.5 89-119Surrogate: Dibromofluoromethane 10813.5
"12.5 87-107Surrogate: Toluene-d8 9111.4
"12.5 94-112Surrogate: 4-Bromofluorobenzene 10913.7
Matrix Spike (B6D0530-MS1)Source: 2603268-02
[TOC_3]Matrix Spike (B6D0530-MS1)[TOC]
Analyzed: 04/16/26 15:02
Bromodichloromethane ug/L10.9 0.50 10.0 ND 35-1551090.25 Dibromochloromethane "13.1 0.50 10.0 ND 53-1491310.25
"12.5 89-119Surrogate: Dibromofluoromethane 11814.7
"12.5 S-GC87-107Surrogate: Toluene-d8 10913.6
"12.5 94-112Surrogate: 4-Bromofluorobenzene 10913.7
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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Project:

Project Number:

Project Manager:

City of Pismo Beach Public Works
760 Mattie Road [none]
Jake Smith
Semi-Annual Sampling
04/27/2026 17:12Pismo Beach CA, 93449
Oilfield Environmental & Compliance, Inc.
2603270
WO & Reported:

Sample Method Summary
Laboratory & CertificationMethodAnalysisMatrix
Total Metals by ICP
EPA 200.7200.7 Total Copper Water
EPA 200.7200.7 Total Nickel Water
Volatile Organic Compounds by GC/MS
EPA 624.1624.1 VOC Water
EPA 624.1624.1 VOC Water
Notes and Definitions [TOC_1]Notes and Definitions[TOC] DefinitionQualifier
MDL
Relative Percent DifferenceRPD
Analyte NOT DETECTED at or above the method limit (MDL)ND Method Detection Limit
Reporting Limit (Quantitation Limit)RL
B-02 The method blank contains analyte at a J-flag concentration.

B-02n The method blank contains analyte at a J-flag concentration. Concentration is less than 5% of the sample result, which is negligible according to method criteria.

J Detected but below the RL/PQL; therefore, result is an estimated concentration.

QR-02 The RPD result exceeded the QC control limits; however, both percent recoveries were acceptable. Sample results for the QC batch were accepted based on percent recoveries and completeness of QC data.

R-06 The Reporting Limit has been raised to account for the presence of high levels of analytes.

S-GC Surrogate recovery outside of control limits. The data was accepted based on valid recovery of the remaining surrogates.

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.

307 Roemer Way, Santa Maria, CA 93454
TEL: (805) 922-4772
FAX: (805) 925-3376 www.oecusa.com
client.oec.com\reportsClient Connect:CA-ELAP 2438, TNI 02666

Sample Receipt
Work Order Review is Complete
Work Order
2603270 Refresh
Client Name Temp °C Thermometer
ID Refrigerator(s)COC Received Login
City of Pismo Beach Public Works 5.8 3 8, 3 04 /15 /2026 10:05 04 /15 /2026 17:47
Recorded Corrected, Acceptable Range 0°C to
6°C (See Exception Notes Below)
Sample Transport
OECCourier/Sampler After Hours Drop Off
Delivery (Other than OEC) Shipment Carrier Tracking#
Custody Seals None Present
Cooler(s) Present, Intact Present, Not Intact None
Sample(s) Present Intact Present, Not Intact None
Condition/Preservation Yes No N/A
Received On Ice Within Range (Acceptable)Completed COCs Received with Sample(s) Received Outside Range(Acceptable)Correct Container(s) Preserve for Analysis Direct from Field on Ice Container(s) Intact and Good Condition Ambient: Air or Filter Matrix Container Label(s) Consistent with COC Received Ambient, Placed on Ice OEC Preservation Added** Sample Temperature Accetable for Analysis Sample Quantity Sufficent Received Outside Range [Exception]*
Insufficient Ice or Unknown
Excessive Free Liquid
2603270_receipt http://sample.oec.com/index.php
1 of 2 4/16/2026, 11:07 AM

Containers, COC Changes, And/Or Corrections
Cotaniner
ID (COC)Container Description Home Matrix Preservative pH/Chlorine /Sulfur Comments
01A 250mL Poly HNO3 Fridge 8 - Walk-In Water
02A 40mL VOA HCl Fridge 3 Water
VOA Container Free of Headspace
02B 40mL VOA HCl Fridge 3 Water
VOA Container Free of Headspace
02C 40mL VOA HCl Fridge 3 Water
VOA Container Free of Headspace
Receipt Login By:

DWM-04/16/26 09:01
Receipt Reviewed By:

LGB-04/16/26 11:07
2603270_receipt http://sample.oec.com/index.php
2 of 2 4/16/2026, 11:07 AM

| City of Pismo Beach | 12686474 | Central Coast Blue - Advanced Water Purification Facility 143 Appendix C
Asset Register Templates

DRAFT
Asset Information
Contractor to add more columns for each additional equipment found on assets or in the field.

All Asset "Add-on" data can be collected on this sheet or collected on the named tabs by Asset Type. The first five columns are the same on all sheets. However it should be noted that this sheet cells are not cross referenced with associated individual tab cells. Contractor should be consistent in data entry (this sheet or tabs).

Summary of Data Attributes to be collected.

Asset Number (Full Tag
Number as per City
Equipment Tag
Standard)
Describes the equipment and
function and or relationship to
other equipment. Keep Asset
Name up to maximum of 100
characters including space in
between words.

Old / Equipement
number if applicable
Mechanical, electrical,
instumentation
equipment, etc.

Equipment e.g.
valve, pump,
screen etc
Equipment, Type
e.g. Valve, Gate,
Actuated or
Centrifual Pump
Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by
DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by City Provided by City Provided by DB
Team Provided by City Provided by City Provided by City Provided by City Provided by DB Team Provided by
DB Team
Provided by DB
Team Provided by DB Team Provided by DB Team
Asset Classification Asset Category Asset Number Asset Name Asset Site Name Parent Number Parent Site Name
Original Equipment
Number Asset Type Asset Classification Asset Category Criticality Service date Asset Location Description Priority Planner Supervisor
Allow
charges
(Yes/No)
Serial
number Description
Warranty info
Effective to and
from
OEM
Name
OEM
Address
Old / Equipment
number if applicable
Master P&ID
Provided by DB Team Provided by DB Team Provided by
DB Team
Provided by
DB Team
Provided
by DB
Team
Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by
DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by DB
Team
Provided by DB
Team
Provided by DB
Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by
DB Team
Provided by DB
Team Provided by DB Team Provided by DB Team
OEM
Phone
Number
Supplier
Name
Supplier
Address
Supplier
Phone
Number
Purchase
Order/
Contract #
Original
Cost_1
Original
Cost_2
Purchase
Date
Model
Number /
Style
Serial
Number
Catalog
Number
Original
Equipment
Number
Drawing
Number
Manufacture
Date
Additional
Information
Motor
Function
Serial
Number
Watts (KW,
W)_1
Watts (KW,
W)_2
Horse
Power RPM AC or DC Number
of Phases
Cycles
(Hz)
Frame
Size
Frame Type
(TEFC,

DE,ODP)
Provided by DB Team Provided by DB Team Provided by
DB Team
Provided by
DB Team
Provided
by DB
Team
Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by
DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by DB
Team
Provided by DB
Team
Provided by DB
Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by
DB Team
Provided by DB
Team Provided by DB Team Provided by DB Team
Amperage
(A, mA)Voltage Abbreviation Sequence Insulation
Class Code
Inboard
Bearing
Part #
Outboard
Bearing
Part #
Winding
Configuration (Y, Delta)
Type (Ind,
Synchr,
Series,
Shunt)
Special
Features
Mount,
(Horizontal,
Vertical)
Shaft (Single
or Double
Output)
Weight_1 Weight_2
Additional
Nameplate
Info
Flow Rate
(L/sec,USgpm,IM
gpm)
Head (M,
FT)_1
Head (M,
FT)_2 RPM
Suction
Diameter
(in, mm)_1
Suction
Diameter (in,
mm)_2
Discharge
Diameter (in,
mm)_1
Discharge
Diameter (in,
mm)_1
Seal Type
(Mech,
Packing)
Number of
Stages
Lubrication (oil,
grease)
Provided by DB Team Provided by DB Team Provided by
DB Team
Provided by
DB Team
Provided
by DB
Team
Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by
DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by DB
Team
Provided by DB
Team
Provided by DB
Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by
DB Team
Provided by DB
Team Provided by DB Team Provided by DB Team
Impeller
Diameter (in,
mm)_1
Impeller
Diameter (in,
mm)_2
Impeller
Sleeve
Diameter_1
Impeller
Sleeve
Diameter_2
Number of
Impeller
Vanes
Impeller
Material
Rotation (CW,
CCW)
Inboard
Bearing Part # /
Type
Outboard
Bearing Part # /
Type
Thrust Bearing
Part # / Type
Additional
Nameplate
Info
Drive (Direct,
Belt or Gear
Box)
Coupling
Type and
Size
Belt Type
and Size
Load
H.P.

Load
F.L.A.

Starter -
Contactor #
Starter -
Type
Starter -
Coil
Voltage
Overload -
Type
Overload -
Range
Breaker
Continuous
Amps
Breaker
Clip
Rating
Control
Transformer
VA
Control
Transformer
Fuse Amps.

Breaker
Serial #
Provided by DB Team Provided by DB Team Provided by
DB Team
Provided by
DB Team
Provided
by DB
Team
Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by
DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by DB
Team
Provided by DB
Team
Provided by DB
Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by
DB Team
Provided by DB
Team Provided by DB Team Provided by DB Team
Pilot Device
Start/Stop
Pilot Device
Remote
Pilot Device
Lights
Cell
Height
Additional
Information
Breaker
Amperage
Rating
Additional
Information
Process
Application
Valve
Type
Connection
Type
Valve
Size
Body
Type
Pressure
Rating
Seat
Material
Packing
Material/ Size
Interior
Coated
Number of
Rotations
Operator
Manufacture
Operator
Type
Operator
Model
Number
Operator
Size
Operating
Torque
Clockwise to
Open
Additional
Operator
Info.

Actuator
Name Plate
Info
Additional
Valve Info.

Provided by DB Team Provided by DB Team Provided by
DB Team
Provided by
DB Team
Provided
by DB
Team
Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by
DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by DB
Team
Provided by DB
Team
Provided by DB
Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by
DB Team
Provided by DB
Team Provided by DB Team Provided by DB Team
KW
Rating
Voltage
Primary
Voltage
Primary
Abbreviation
Voltage
Primary
Sequence
Control
Voltage
Control Voltage
Abbreviation
Control
Voltage
Sequence
Style /
Type Current Additional
Information Supply Sequence Display Input Abbreviation Sequence Output Abbreviation Sequence Range Calibration Range
Pressure
Rating
Type (Draw-
Thru
or Blow-Thru)
CFM
Rating
Static
Pressure
Rating
Drive (Direct,
Belt or Gear
Box)
to be performed
on each Asset to
ensure reliability.
(instructions for
staff to follow)
number of people
and trade
(calendar, time based,
condition
based etc.).

Provided by DB Team Provided by DB Team Provided by
DB Team
Provided by
DB Team
Provided
by DB
Team
Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by
DB Team Provided by DB Team Provided by DB Team Provided by DB Team Provided by DB Team
Provided by DB
Team
Provided by DB
Team
Provided by DB
Team Provided by DB Team Provided by DB Team Provided by DB Team Pulley
Dimensions -
Motor
Pulley
Dimension -
Fan
Belt Size
and
Quantity
Inboard Fan
Bearing #
Outboard
Fan Bearing
#
Coupling
Type and
Size
Cooling Coil
Description
Filter Type
Description
Filter
Dimensions
and #
Evaporator
Style
Evaporator
Dimensions
Humidification
Info.

Compressor
Name Plate
Info.

Damper
Info.

Additional
Information
By Asset -
individual work
task title
Task
description
Trade
Requirements
Estimated
Trade time
requirement
Task
Frequency
HVAC Add-on Manufacturer Recommended Maintenance
Breaker Add-on Valve Add-on
Instrument Add-on HVAC Add-on
PCS & Procurement Add-on
Motor Add-onPCS & Procurement Add-on
Heater Add-on
Breaker Add-on
Basic Asset
Motor Add-on Pump Add-on

Attachment 1 to Exhibit A of the Central Coast Blue AWPF Design-Build Agreement Design Criteria Report
Clarifications from proposals
Topic Negotiation Summary Clarification / Direction
Project Coordination
Meetings
The City requested regular project
coordination meetings. PERC
proposed weekly project coordination
meetings and bi-weekly design
review meetings.

Weekly progress meetings and their
contents are already covered in the
DCR in section 17.1.8, item 4

Topic Negotiation Summary Clarification / Direction
Design Deliverables
The City requested confirmation that
a final Issued-for-Construction (IFC)
submittal is included. PERC
confirmed delivery of 30%, 60%,
90%, and 100%/IFC design
packages.
100% / IFC submittal is already
covered as Final Design in DCR
section 17.7.7.

Topic Negotiation Summary Clarification / Direction
Procore Licensing and
Access
The City requested confirmation that
Procore access would be provided to
both the City and Owner's Engineer
at no additional cost. PERC
confirmed access is included in the
Contract Price.

Design-Builder will provide Procore
licenses and access for the City and
Owner's Engineer at no additional
cost.

Procore Functionality
The City requested clarification
regarding user permissions and
functionality. PERC indicated the City
and Owner's Engineer will have full
participation, review, viewing, and
submittal review capabilities,
including training.

Procore access rights and
functionality for City and Owner's
Engineer users will be the same as
that for the Design-Builder, with
training also to be provided.

Topic Negotiation Summary Clarification / Direction
Partnering Workshops
The City requested formal partnering
workshops throughout design. PERC
proposed workshops following the
30%, 60%, and 90% design
milestones involving the City, GHD,
PERC, and key subcontractors.

Formal partnering workshops at the
30%, 60%, and 90% design
milestones with defined objectives,
attendees, and facilitation
requirements.

Topic Negotiation Summary Clarification / Direction

Permanent Security
Fencing
The City requested confirmation that
permanent site security fencing is
included in the Work. PERC
confirmed inclusion.

Already included in DCR in section 6,
item 6.

Topic Negotiation Summary Clarification / Direction
Training and Support
Services
Commencement,
Travel Time and
remote vs on-site
The City requested clarification
regarding the start of the Training
and Support Services period. PERC
confirmed the 600-hour support
period begins after Substantial
Completion, while operator training
will also occur during startup and
commissioning.

Confirmed that the Training and
Support Services as commencing
following Substantial Completion
while preserving separate startup and
commissioning training obligations.

Travel time is not billable or included
in the 600 hour allowance.

No more than 10% of the total
support (600 hours) is to be remote,
unless approved in writing by the City.

Exhibit B – Scope of Services
The scope of services to be provided by the Respondent is generally considered to include, but is not limited to, the following tasks.

Design and Pre-Construction Services, generally consists of the following:
• Project Management
• Development of Project Execution Plan, including Project schedule • Development of Project Controls, addressing cost, schedule, and quality • Preparation of all design, technical and other documents in accordance with the requirements of the Design-Build Contract
• Preparation of Project CPM Baseline Schedule and Schedule of Values in accordance with the requirements identified in the Design Build Contract
• Performing engineering to support design and regulatory approval requirements • Project permitting requirements and permitting activities as required by the Design Build Contract • Completion of Design Documents, including design reviews by the City

Construction Services, generally consists of the following:
• Provision of all labor, equipment, materials and incidentals necessary to construct approved facilities and pipelines in compliance with all permit requirements • Documentation required by funding agencies
• CPM schedule updates as required by the Design-Build Contract • Coordination with the City and Owner’s Advisor (OA) in evaluating changes during construction, including opportunities for value engineering or other increased value propositions • Provision of all plans associated with construction services, including but not necessarily limited to, quality control plan, site safety plan, construction management and reporting plan, mobilization plan, demobilization plan, environmental compliance plan, traffic control plan, storm water pollution prevention plan (SWPPP), and other plans required by the Design Build Contract

Commissioning and Training Services, generally consist of the following:
• Procurement of spare parts, equipment and materials required for the acceptance testing of the Facilities
• Transition training of City operations staff
• Detailed startup and commissioning plans and startup, commissioning and performance testing, completion of record drawings, final approved submittals and complete Asset Register • Provision of warranty coverage and assurances for process and associated equipment • Management, procurement, deliveries, and inventory of consumables and spare parts, identified during design
• Organization of Operation and Maintenance (O&M) Manuals for installed assets • Update of Operations Plan in accordance with regulatory requirements • Facilitation of access by City staff and OA to the Facilities at all times; and coordination of onsite activities with City staff to allow for scheduled activities • Commissioning and training period of 600 hours from an Advanced Water Treatment Operator (AWTO) 5 within a 6-month period to support operational staff readiness post issuance of substantial completion.

Exhibit C - List of Reference Documents

Exhibit C:

Background
Document TM
Central Coast Blue AWPF
City of Pismo Beach
15 June 2026

.

Contents

1. Introduction 2

1.1 Scope and limitations 2

2. Project Conception 3

2.1 2015 Pismo Beach Recycled Water Facilities Planning Study 3

2.2 2016 SSLOCSD Recycled Water Facilities Planning Study 3

2.3 Formation of Central Coast Blue 4

3. Initial Project Definition 5

3.1 Central Coast Blue Phase 1A Model Report 5

3.2 Central Coast Blue Phase 1B Model Report 6

3.3 Central Coast Blue Phase 1C Model Report 7

3.4 Preliminary Engineering Report for Central Coast Blue 8

3.5 Central Coast Blue Final Environmental Impact Report 9

4. Grant / Supporting Documents 10

4.1 Aerial Geophysics 10

4.2 Monitoring Network TM 10

4.3 Central Coast Blue Title XVI Feasibility Study 10

4.4 Grant Applications Error! Bookmark not defined.

4.5 SWRCB Proposition 1 Groundwater Grant Error! Bookmark not defined.

4.6 Bureau of Reclamation Title XVI WaterSmart Grant Error! Bookmark not defined.

5. Initial Design Documents 11

5.1 Geotechnical Report (AWPF Siting) 11

5.2 Geotechnical Report (Distribution Infrastructure) 12

5.3 Preliminary Design Report 14

5.4 90% Design Drawings and Technical Specifications (AWPF) 15

5.5 60% Design Drawings (Distribution Infrastructure) 15

6. Redefined Project Definition 16

6.1 Central Coast Blue Reduced Phase 1 Feasibility Analysis TM 16

6.2 Updated Groundwater Modelling 16

7. Environmental Technical Reports for CEQA/NEPA 18

7.1 Biological Resource Assessment 18

7.2 Cultural Report 18

7.3 Paleontological Resources Report 18

7.4 Environmental Assessment 18

8. Injection and Monitoring Wells 19

8.1 Leaching Study 19

8.2 Anti-degradation Analysis 19

8.3 Injection Well Siting and Evaluation TM 20

.

8.4 Test Injection Well Construction Report 20

8.5 Dynamic Flow Profiling Report for City of Pismo Beach Well #23 20

8.6 Injection Well Standard Details 20

8.7 Well Condition Assessment for City of Pismo Beach Well #23 21

9. Waste Streams Technical Reports 21

9.1 Grover Beach Sewer Master Plan 21

9.2 SSLOCSD WWTP & Collection Final TM 22

9.3 Sanitary Sewer and Ocean Outfall Discharge Flow Analysis 23

10. Summary 23

Introduction
This Technical Memorandum (TM) is meant to serve as a summary of historical documents prepared for the Central Coast Blue (CCB) Indirect Potable Reuse (IPR) Program for Phase 1 (to Design-Build (DB) contract execution). This TM will be used to assist the current Preliminary Design and Environmental and Permitting efforts, as well as future design efforts, for the CCB Advanced Water Purification Facility (AWPF) Program being carried out by the City of Pismo Beach (City). The TM is structured both by technical discipline and based on the City-supplied Documents, with the intent to give those who utilize this document an understanding of how the project evolved, and can only be used for reference. The major components of this TM include:
• Project Conception
• Initial Project Definition
• Grant Documents / Supporting Documents
• Initial Design Documents
• Redefined Project Definition
• Environmental Technical Reports for CEQA / NEPA
• Waste Streams Technical Reports
• Summary
Scope and limitations
GHD has prepared this TM on the basis of information provided by City of Pismo Beach and others who provided information to GHD, which GHD has not independently verified or checked beyond the agreed scope of work. This includes available information and insights provided by Staff, current regulatory condition and existing permits. GHD does not accept liability in connection with such unverified information, including errors and omissions in the TM which were caused by errors or omissions in that information.

Project Conception
This section summarizes the early planning and decision-making that shaped the CCB program and the AWPF.

It compiles key studies, milestones, and outcomes that established the project’s purpose, technical approach, and participating agencies. Together, these materials provide the context for the project definition and subsequent design and permitting efforts documented in later sections. 2015 Pismo Beach Recycled Water Facilities Planning Study Year Completed: 2015
Description: The 2015 Recycled Water Facilities Planning Study (RWFPS) was conducted to investigate alternatives for developing a recycled water (RW) system which would enable the City to produce and beneficially use RW to enhance its water supply portfolio.

The City developed the following as goals and objectives for RW use:
• Offsetting potable water uses to the extent practicable • Further diversification of the City’s water supply portfolio through development of a local, sustainable and reliable water supply
• Providing a new source of recharge to the Santa Maria Groundwater Basin (SMGB) • Supporting anticipated growth-related increases in water demand • Developing a viable RW system in a timely manner to facilitate regional use of RW in South County • Securing outside funding and/or financing to support the development of the City’s RW system A total of four alternatives were investigated in the RWFPS:
• Alternative 1: Providing RW that meets standards for restricted reuse • Alternative 2: Providing RW that meets standards for unrestricted landscape irrigation • Alternative 3a: Providing RW that meets the standards for groundwater recharge for injection as coastal seawater intrusion barrier
• Alternative 3b: Providing RW that meets the standards for groundwater recharge for injection directly into the inland aquifer
The alternatives were evaluated based on qualitative and quantitative rankings. The following qualitative, non- economic criteria included:
• Promotes beneficial management of water resources
• Promotes salt and nutrient management
• Improves basin water quality
• O&M complexity
• Expandability
• Ease of implementation
• Funding opportunity
• Consistency with project goals and objectives
Key Outcomes: The RWFPS resulted in the recommendation of Alternative 3b (Providing RW that meets the standards for groundwater recharge for injection directly into the inland aquifer) to enhance the City’s water supply portfolio. The study identified RW, specifically IPR, as the most cost-effective supplemental water supply option.
2016 SSLOCSD Recycled Water Facilities Planning Study
Year Completed: 2016

Description: The 2016 RWFPS was conducted to investigate alternatives for developing a RW system to provide supplemental water to the Southern San Luis Obispo County (SSLOC) region.

The South San Luis Obispo County Sanitation District (SSLOCSD) and the City of Arroyo Grande developed the following as goals and objectives for the RWFPS:
• Investigate and document potential regulatory, scientific, financing, jurisdictional, and public acceptance constraints to the SSLOCSD developing a RW facilities planning system • Identify opportunities for the SSLOCSD, its member agencies, and regional stakeholders to overcome constraints and outline a strategy for developing an additional, resilient, drought-proof source of water supply
• Provide the opportunity to educate the public and project stakeholders about RW opportunities in the region
• Coordinate with other local efforts to develop a regional RW program A total of two alternatives were investigated in the RWFPS:
• Alternative A: Development of an onsite AWPF to provide RW for groundwater injection with the possibility of a hybrid approach that would include agricultural irrigation • Alternative B: Development of an offsite AWPF to provide RW for groundwater injection with the possibility of a hybrid approach that would include agricultural irrigation Key Outcomes: The study resulted in the recommendation of Alternative A (Onsite groundwater recharge or irrigation hybrid) to develop a seawater intrusion barrier for the protection of the groundwater basin and prevention of groundwater quality degradation. The study found a collaborative implementation of IPR on a regional scale by combining flows from the City WWTP and SSLOCSD WWTP would produce greater yields and potential cost savings.

Formation of Central Coast Blue
Year Completed: 2017
Description: RW, specifically IPR, was identified as the most cost-effective supplemental water supply option in the 2015 City RWFPS. The 2015 RWFPS considered using treated effluent from the City WWTP and injecting the RW into the water table where it would provide a seawater intrusion barrier and protect the Northern Cities Management Area (NCMA) portion of the SMGB.

In 2016, the SSLOCSD completed a RWFPS in partnership with the City of Grover Beach, the City of Arroyo Grande, and the Oceano Community Services District. The 2016 RWFPS identified greater yields and potential cost savings if the IPR was implemented collaboratively on a regional scale by combining flows from the City WWTP and SSLOCSD WWTP.

Key Outcomes: The collaborative IPR project involving both WWTPs and all study partners became known as CCB, a project that would inject RW into the NCMA portion of the SMGB to prevent groundwater contamination caused by seawater intrusion, increase groundwater recharge, and improve groundwater quality.

Initial Project Definition
This section documents how the CCB program was initially defined, including early modelling, engineering, and environmental deliverables that translated project concepts into a workable scope. It summarizes the key assumptions, design criteria, and findings that informed facility sizing, injection strategy, and risk considerations. These foundational documents establish the baseline from which later scope refinements and design development proceeded.

Central Coast Blue Phase 1A Model Report
Year Completed: 2017
Description: The report evaluates the potential to treat and inject 1,000 AFY of RW from an AWPF using secondary effluent from the City WWTP into the Arroyo Grande-Tri-Cities Mesa portion of the SMGB. This hydrogeologic characterization includes a groundwater flow model for the project area and evaluation of multiple injection scenarios to determine project benefit and identify potential injection sites to protect the basin from seawater intrusion and enhance groundwater production reliability.

Injection well layout configurations explored included:
• Linear coastal – Careaga Aquifer (five injection wells) • Linear coastal – Paso C Aquifer (five injection wells) • Tee coastal and The Pike Street – Careaga Aquifer (three injection wells) and Paso C Aquifer (two injection wells)
Water usage scenarios explored included:
• Background – No pumping of groundwater
• Baseline – Historical conservation pumping of groundwater • Allocation – Usage of entire groundwater pumping entitlement • Injection – Recharging of groundwater
The explored well configurations and water usage scenarios produced the following findings:
• Baseline pumping with no injection saw the potential for seawater intrusion into the basin • Linear coastal injection into the Paso C and Careaga aquifers provides the greatest seawater intrusion mitigation potential
• Baseline pumping with linear coastal injection can mitigate the potential for seawater intrusion and will not result in storage depletions over a balanced hydrologic period • Allocation pumping with linear coastal injection can mitigate the potential for seawater intrusion initially but will result in depletion over a balanced hydrologic period • Municipal purveyor production with linear injection could increase by about 1,300 AFY over the average pumping in the baseline scenario without seawater intrusion and storage depletions • Average groundwater flow velocity is approximately 60 ft/yr in the Careaga Formation and 130 ft/yr in the Paso Robles Formation. Travel time from injection wells to proximate municipal pumping wells is more than two years for all analyzed injection scenarios.

Key Outcomes: The report concluded that a linear array of coastal wells injecting into the Paso C and Careaga aquifers provided the greatest seawater intrusion mitigation potential.

The report also provided the following next steps recommendations based on the evaluation:
• Expand groundwater model to allow for evaluation of injection flows from City WWTP and SSLOCSD WWTP to evaluate additional seawater intrusion protection and groundwater supply reliability benefits provided by expanding the project
• Design, construct, and monitor the operation of a test injection well to collect additional observation data, improve understanding of the near field hydraulics, inform injection well design for full-scale project and further define project benefits
• Perform additional hydrologic analysis as required to support the development of an Environmental Impact Report (EIR) for the Regional Groundwater Sustainability Project (RGSP) • Continue discussion and collaboration with the Regional Water Quality Control Board to identify a permitting strategy for addressing the antidegradation requirements in the RW policy Central Coast Blue Phase 1B Model Report
Year Completed: 2019
Description: The report expands on the previous CCB Phase 1A regional groundwater model to include an evaluation of injection and extraction scenarios with flows from both the SSLOCSD and City WWTPs.

Injection and extraction scenario descriptions and effects are listed below:
• Baseline: Zero CCB Phase 1 implementation with NCMA municipal pumping average of last five years (1,080 AFY) and historical hydrology
o Minimal seawater intrusion potential
o Deep Well Index (DWI) fluctuates above and below threshold of 7.5 ft o Groundwater flow is generally seaward
o Groundwater storage decreases by an average of 53 AFY • Scenario 1: Zero CCB Phase 1 implementation with NCMA municipal pumping of 2,500 AFY and historical hydrology
o Significant seawater intrusion potential
o DWI falls below threshold for majority of simulation period o Inland flow across the shoreline is seen in Lower Paso Robles and Upper Careaga Sand Formations
o Groundwater storage decreases by an average of 98 AFY • Scenario 2: Full CCB Phase 1 implementation (900 AFY injection across five wells) with NCMA municipal pumping of 2,500 AFY and historical hydrology o Seawater intrusion potential minimized with CCB operations o DWI remains above threshold for the duration of simulation period o Very little inflow across the shoreline north and south of Arroyo Grande Creek o Groundwater storage decreases by an average of 58 AFY

• Scenario 3: Zero CCB Phase 1 and 2 implementation with NCMA municipal pumping maximum allocation (4,330 AFY) and historical hydrology
o High potential for seawater intrusion
o DWI remains well below the threshold for the duration of the simulation period o Net underflow to offshore aquifers is reversed
o Groundwater storage decreases by an average of 195 AFY • Scenario 4: Full CCB Phase 1 and 2 implementation (3,500 AFY injection across seven wells) with NCMA municipal pumping maximum allocation (4,330 AFY) and historical hydrology o Seawater intrusion potential minimized with CCB operations o DWI remains above threshold for duration of simulation period o Inland flow mitigated north of Arroyo Grande Creek
o Groundwater storage decreases by an average of 39 AFY • Scenario 5: Zero CCB Phase 1 and 2 implementation with NCMA municipal pumping average of last five years (1,080 AFY) and climate change hydrologic conditions o Little variance from baseline conditions
o DWI fluctuates above and below threshold of 7.5 feet
o Net underflow across shoreline shows slightly elevated inland flow south of Arroyo Grande Creek during dry periods
o Groundwater storage decreases by an average of 71 AFY • Scenario 6: Zero CCB Phase 1 and 2 implementation with NCMA pumping average of last five years (1,080 AFY) and historical hydrology plus predicted sea level rise o Little variance from baseline conditions
o DWI shows slight increase
o Net underflow across shoreline shows slightly elevated inland flow south of Arroyo Grande Creek during dry periods
o Groundwater storage decreases by an average of 40 AFY Key Outcomes: Based on predictive model scenario results, Scenarios 2 and 4 were selected as possible candidates for CCB implementation, showing decreases in groundwater storage up to 60 AFY as opposed to decreases up to 195 AFY for scenarios without injection. All municipal wells are located at least one year of groundwater travel time away from injected RW in Scenario 2 and six months in Scenario 4.

Central Coast Blue Phase 1C Model Report
Year Completed: 2023
Description: The report updates the previous CCB Phase 1B regional groundwater model based on collected geophysical data to rerun predictive groundwater injection and extraction model scenarios for CCB Phase 1 implementation.
• Scenario 1: Zero CCB Phase 1 implementation with 2,500 AFY of NCMA municipal extraction, last five years average of Nipomo Mesa Management Area (NMMA) extraction, 2016 agricultural extraction, and historical hydrology

o Landward flow direction was observed in the vicinity of City Well #23 o Seawater-freshwater interface in the NCMA migrated landward o TDS concentrations in City Well #23 predicted to rise toward end of model simulation period due to seawater intrusion
• Scenario 2: Full CCB Phase 1 implementation (900 AFY injection across five wells) with 2,500 AFY of NCMA municipal extraction, last five years average of NMMA extraction, 2016 agricultural extraction, and historical hydrology
o Seaward flow direction was observed in the NCMA
o Seawater-freshwater interface in the NCMA migrated seaward o TDS concentrations in City Well #23 predicted to decline rapidly Key Outcomes: The updated Phase 1B model was used to rerun model scenarios for the evaluation of impacts from CCB implementation on seawater intrusion and changes to the seawater-freshwater interface.

Results showed injection produced lower TDS concentration in City Well #23 and model layers representing the Paso Robles Formation and Careaga Sand as well as seaward migration of the seawater-freshwater interface.

Preliminary Engineering Report for Central Coast Blue
Year Completed: 2021
Description: The report describes the initial design criteria and recommendations for the CCB project, including recommendations for advanced water treatment, injection, and reuse of treated wastewater flows currently being discharged into the Pacific Ocean.

The following were developed as the vision and objective items for the project:
• Utilize new and innovative technology to inject RW into the SMGB to prevent groundwater contamination caused by seawater intrusion.
• Provide a new source of recharge to the SMGB to create a sustainable, drought resistant, local drinking water supply.
• Facilitate continued water resources collaboration in the NCMA through development of a regional project to enhance local water supply reliability and reduce the reliance on imported water supplies. • Develop decision support tools to enable the CCB stakeholders to better manage water supply resources and optimize use of groundwater supplies and reduce the potential for the spread of groundwater contamination (consistent with the California Water Action Plan). • Leverage local, state, and federal funds to protect drinking water supplies for disadvantaged communities.
• Improved groundwater quality through injection of RW. • Reduced local and state surface water diversions to help benefit critical environmental habitat. • Enhanced community involvement and education in drinking water production. • Improved energy efficiency in the potable water production processes.

The report details the following infrastructure elements significant to meeting the project’s vision and objections. • Source Water Diversion: A portion of the secondary treated effluent from the City and SSLOCSD WWTPs will be diverted from the existing ocean outfall for conveyance to the AWPF.

• AWPF: The AWPF will be located at the southern end of Huber Street in the City of Grover Beach, California and will include the following major treatment processes: ultrafiltration (UF), reverse osmosis (RO), and ultraviolet disinfection with advanced oxidation process (UV/AOP). • Chemical Storage and Feed Facilities: The AWPF will require new chemical storage and feed facilities at the SSLOCSD WWTP.
• Equalization: The AWPF will require equalization upstream of the RO to provide a consistent feed flow throughout the day.
• RW storage, pump station, and pipelines: After advanced treatment, the RW will be temporarily stored before being pumped out to the injection wells through a series of conveyance pipelines. • Injection wells and monitoring wells: The RW will be injected into the groundwater basin through injection wells. Water quality will be continually monitored using monitoring wells which will be installed with each injection well.

Key Outcomes: The report concludes CCB project infrastructure will further purify treated wastewater effluent to Title 22 standards for IPR via groundwater injection. The facility detailed in this report is sized to yield 900 AFY for Phase 1 and 3,500 AFY for Phase 2. Groundwater modelling indicates the injection of RW will be sufficient to develop a seawater intrusion barrier and protect the basin.

Central Coast Blue Final Environmental Impact Report
Year Completed: 2021
Description: The report analyzes the environmental effects of the CCB Project, providing project alternatives, environmental impacts, and mitigation measures.

Key Outcomes: The report acknowledges that although there is controversy regarding whether there is evidence of ongoing or potential seawater intrusion in the NCMA necessitating the project, project merits are beyond the scope of an environmental assessment. Otherwise, there is no new or supplemental EIR required for Phase 1 with the existing report providing mitigation measures to minimize impacts during construction and operation.

Grant / Supporting Documents
This section compiles the primary grant and supporting technical documents that helped advance the CCB program from concept to implementation. It summarizes the studies and compliance materials developed to support funding applications, demonstrate project benefits, and address key regulatory requirements. These references provide the supporting basis for major program decisions and subsequent design development.

Aerial Geophysics
Year Completed: 2021
Description: This TM reports on the interaction between the fresh and saline groundwater in the near coastal zone to a depth of 1000 feet via airborne electromagnetic (AEM) survey and data interpretation. An additional goal for the report was to detail the system used in the acquisition of the electromagnetic data and to describe the approach taken to process and invert these to obtain models of ground conductivity in the survey area.

Key Outcomes: The TM recommends usage of the AEM data set to develop an enhanced geologic model for the basis of a hydrogeologic conceptual model. It is also recommended the AEM data be used in conjunction with the existing model to define locations for test boreholes for confirmation of interpretations of the AEM results. The AEM data indicates there is an area of shallow subsurface seawater intrusion near Oceano Airport towards Highway 1 and is supported by an increased TDS value in a nearby borehole. The AEM data indicates an area of low resistivity (possible saltwater intrusion) near Pismo Beach, but no water quality data has been made available to confirm the low resistivities correlate with saltwater intrusion.

Monitoring Network TM
Year Completed: 2021
Description: This TM describes the evaluation of the existing NCMA monitoring program and to identify any new monitoring requirements or data gaps.

The TM includes the following topics within the scope of the evaluation:

Existing NCMA groundwater monitoring program description Potential monitoring requirements for emerging chemicals of concern Potential groundwater monitoring data gaps and additional monitoring recommendations Key Outcomes: The TM identifies the existing monitoring network as sufficient to monitor for seawater intrusion for groundwater north and east of Oceano Airport. The planned injection wells and the associated monitoring wells are sited to provide seawater intrusion protection and monitoring coverage that is compliant with the travel time requirements for recharge of RW. The RW produced by the project will be tested for CECs prior to injection after project startup.

Central Coast Blue Title XVI Feasibility Study
Year Completed: 2018
Description: This feasibility study report assesses the CCB project’s ability to protect the NCMA portion of the SMGB from seawater intrusion. Without taking proactive efforts to protect groundwater supplies, it is anticipated the NCMA will face the following complications:

Degradation of groundwater quality within the SMGB from seawater intrusion and nitrates from agricultural fertilizer application

Increased dependence on local surface water supplies that are susceptible to variable precipitation and climate change
Increased dependence on imported State Water Project (SWP) water supplies, which make the NCMA vulnerable to SWP availability, reliability, catastrophic conveyance interruption, and increased costs of SWP supplies
CCB stakeholders seek to implement a project that meets the following specific regional objectives:

Create a sustainable, drought resistant, local water supply and improve water supply reliability for southern San Luis Obispo County
Provide a new source of recharge to the SMGB to protect the basin from degradation due to seawater intrusion
Reduce wastewater discharges to the ocean and maximize utilization of local water supplies Facilitate continued water resources collaboration in the NCMA Additional benefits that the CCB stakeholders seek to achieve by realizing project objectives include:

Improve groundwater quality through nitrate removal and dilution Reduce local and state surface water diversions to help benefit critical environmental habitat Establishes community involvement and education of RW production Incorporate energy efficiency and renewable energy into potable water production Key Outcomes: CCB was identified as the preferred regional water sustainability project which achieves all NCMA agency and USBR specific objectives. Additionally, CCB is consistent with State-wide objectives regarding water resource management.

Initial Design Documents
This section summarizes the initial design deliverables developed for the original, higher-capacity regional CCB concept. It compiles the key technical reports, drawings, and specifications for that regional configuration. The project was later redefined to a lower-capacity, City-focused facility; the updated basis and supporting documents are summarized in Section 6.

Geotechnical Report (AWPF Siting)
Year Completed: 2023
Description: The report provides the geotechnical investigation, conclusions, and recommendations for the design of the new AWPF for the CCB project.

Based on the investigation the report presents recommendations for the following:
• Earthwork recommendations
o General
o Remedial Grading
o Over-excavation and re-compaction
o Compacted fill placement

o Site Drainage
o Utility trench backfill
 Pipeline subgrade preparation
 Pipe bedding
 Trench zone backfill
• Design recommendations
o Shallow Foundation Design Parameters
o Mat Foundation Design Parameters
o Lateral Earth Pressures and Resistance to Lateral Loads  Active Earth Pressures
 Passive Earth Pressures
o Settlement
o Soil Parameters for Pipe Design
o Bearing Pressure for Anchor and Thrust Blocks
o Soil Corrosivity
o Flexible Pavement
o Rigid Pavement
• Construction recommendations
o General
o Temporary Sloped Excavations
o Slot Cut Recommendations
o Shoring Design
 Cantilevered Shoring
 Tie-Back Shoring
 Tie-Backs
Key Outcomes: The report presents an investigation and understanding of geotechnical conditions within the project area and provides recommendations and considerations for earthwork, design, and construction activities. Based on the investigation the report concludes the site is suitable for construction of the project, provided the findings, conclusions and recommendations presented are considered in the planning, design, and construction of the project.

Geotechnical Report (Distribution Infrastructure)
Year Completed: 2023
Description: The report provides geotechnical recommendations for the design of the new conveyance pipeline for the CCB project, consisting of project coordination, field exploration, laboratory testing, and engineering analyses.

Based on the evaluation the report presents recommendations for the following:

• Earthwork – general
o Material specifications
 Aggregate base
 Asphalt concrete
 Compacted fill
 Geotextile – general
• Separation / filter fabric
• Stabilization
 Gravel Bedding
 Pipe bedding / pipe zone material
 Slurry cement backfill
 Trench backfill
o Clearing and Grubbing
o Compaction and Grading
o Fill Placement
o Stabilization
o Reuse of Excavated Onsite Material
• Seismic Data
• Liquefaction
• Corrosion Considerations
• Pipeline Design
o Foundation Support
o Pipe Bedding
o Pipe Zone Material
o Trench Backfill
o Trench Patch
o Pipe Loads
• Trenchless Installation
o Subsurface Conditions and Considerations
o Jacking Resistance
o Monitoring
o Contact Grouting
• Excavation Pads and Vaults
o Over-Excavation and Grading
o Foundation Design

o Settlement Considerations
o Lateral Earth Pressures
 Seismic Earth Pressures
 Surcharge Loads
 Drainage
o Resistance to Lateral Loads
o Resistance to Uplift Loads
The report also provides construction considerations for the following:
• Excavations
• Dewatering
• Adjacent Facilities
• Excavation Stability
• Subgrade Evaluation
• Grading Observation
Key Outcomes: The report presents an investigation and understanding of geotechnical conditions within the project area and provides recommendations and considerations for earthwork, design, and construction activities.

Preliminary Design Report
Year Completed: 2023
Description: The report expands on the Preliminary Engineering Report to incorporate changes to the project scope and design features as the preliminary design has progressed.

Key changes include:
• Alternative injection well locations, feasibility evaluation for deferring infrastructure elements from Phase 1 to Phase 2 to reduce project costs reduced number of Phase 1 injection wells. • Alternative monitoring well locations.
• Alternative pipe alignments.
• Analysis and refinement of updated flow data from the City WWTP. • Property purchase of parcel directly south of the AWPF. • Development of AWPF architectural design via architectural visioning workshops held with partner agencies.
• AWPF 60% design complete.
• Addendum to Final EIR including design changes since 2021 adopted by Pismo Beach. • Updated cost estimates based on preliminary design prepared in support of 2021 Clean Water State Revolving Fund Loan application.

• Secured $38.1M in implementation grant funding in addition to $4.5M in planning grant funding already awarded. The project is also selected for multiple low-interest financing programs with loan agreement being finalized.

Key Outcomes: The report focuses on Phase 1 infrastructure for the project; Injection Wells IW-1, IW-2A, and IW-3 are included in the Phase 1 scope while IW-4 will be included in the construction bid documents in the event it can be accommodated within the Phase 1 budget. However, as the design has been optimized for future expansion, a discussion of Phase 2 considerations is included when relevant to project design. The facility detailed in this report is sized to yield 900 AFY for Phase 1 and 3100 AFY for Phase 2. 90% Design Drawings and Technical Specifications (AWPF) Year Completed: 2024
Description: The set depicts 90% Design Drawings for the CCB AWPF and associated site infrastructure. The set includes sheets for the following disciplines.
• General
• Civil
• Landscaping
• Structural
• Architectural
• Mechanical
• HVAC
• Fire Protection
• Plumbing
• Electrical
• Instrumentation
Key Outcomes: This document includes 90% not for construction draft engineering design plans. It includes the AWPF and associated process systems. The facility detailed in these drawings is sized to yield 900 AFY. 60% Design Drawings (Distribution Infrastructure)
Year Completed: 2023
Description: The set depicts 60% Design Drawings for CCB Injection Wells 1 through 4 and the associated distribution infrastructure.

Key Outcomes: This document includes 60% draft engineering design plans. It includes five injection well locations and is presumably based on injecting 900 AFY as assumed for model Phase 1B and 1C Scenario 2.

However, one of the five locations is labeled “Future Injection Well – Not part of this Contract” and is located south of Oceano Airport. Five pairs of monitoring wells associated with the injection wells are also sited. RW injection pipe size ranges from 8-16 inches; see 5th page of PDF for Pipe Schedule.

Redefined Project Definition
This section summarizes the revised project definition developed after the program was scaled from a regional solution to a City-focused facility with a reduced treatment and injection capacity. It compiles the updated technical memoranda, modelling, and funding documentation that establish the current basis of design and implementation approach for the City. Together, these materials document the decisions and analyses that support proceeding with the reduced-scope project.

Central Coast Blue Reduced Phase 1 Feasibility Analysis TM Year Completed: 2025
Description: This analysis evaluates the feasibility of a reduced initial phase of the CCB program with a reduced AWPF treatment capacity, single injection well and potential for future expansion to a regional project.

The objectives of this evaluation include the following:

Determine if the project could provide a similar supply benefit to the City as their share of the original, larger Phase 1 project.

Evaluate consistency of the project with the requirements of state and federal grant funding source.

Determine whether the project capital, operations, and maintenance costs can be accommodated within the City’s budget.

Key Outcomes: This analysis credits the reduction in project scope to increased program costs and the loss of state grant funding initially committed to the program, prompting the Cities of Arroyo Grande and Grover Beach to withdraw from the project.

The analysis resulted in the following findings:

The NCMA portion of the SMGB is at risk of seawater intrusion based on the assumed hydrologic conditions and groundwater pumping volumes incorporated into the groundwater modelling scenarios Injection of 350 AFY of RW into the groundwater basin at the AWPF site would protect the City’s groundwater production Well #23 from elevated TDS concentrations (assuming inland relocation based on preliminary well design)
The initial phase of the project appears to satisfy the Proposition 1 Groundwater Grant Program requirement that the project cleans up or prevents groundwater contamination.

This analysis maintains that additional coordination with the City and analysis is required to determine if the estimated capital, operations, and maintenance costs of the project can be accommodated with the City’s budget.

Updated Groundwater Modelling
Year Completed: 2024
Description: The model reports simulated TDS concentrations for the reduced Phase 1 scope injection and extraction scenarios.

• Scenario 10: Zero Reduced Phase 1 Implementation with variable municipal NCMA extraction (1,510 AFY to 4,220 AFY), 5,663 AFY NMMA extraction, 2016 agricultural extraction, and historical and extended drought hydrology conditions
o Predicted seawater intrusion into the NCMA with City Well #23 experiencing elevated TDS • Scenario 11: Full Reduced Phase 1 Implementation (350 AFY across one injection well) with variable municipal NCMA extraction (1,510 AFY to 4,220 AFY), 5,663 AFY NMMA extraction, 2016 agricultural extraction, and historical and extended drought hydrology conditions o Predicted mitigation of seawater intrusion into the NCMA with protection of City Well #23 from elevated TDS
Key Outcomes: The model reports limited seawater intrusion into the NCMA and elevated TDS in City Well #23 in the scenario the reduced Phase 1 scope is not implemented. Implementation of the reduced Phase 1 scope (one injection well) is predicted to mitigate seawater intrusion into the NCMA and the elevated TDS in City Well #23 in that scenario.

Environmental Technical Reports for

CEQA/NEPA
This section compiles the environmental technical studies prepared to support CEQA/NEPA compliance for the project, including updates developed to address the reduced-scope, City-focused configuration. It summarizes the key findings, impact evaluations, and mitigation considerations that inform permitting and decision-making for the modified project.

Biological Resource Assessment
Year Completed: 2025
Description: The report details an analysis of potential impacts to regulated biological resources within the project area, providing recommendations to avoid, minimize, or mitigate these impacts and identify the need for any additional surveys prior to initiation of the project.

Key Outcomes: The report states no special status species were observed during the field reconnaissance survey. Based on the literature review and field reconnaissance survey, no special status plant species have the potential to occur within the Biological Study Area while 16 special status wildlife species do have the potential to occur within the Biological Study Area. These features do not overlap with the project site; as such, no direct impacts are anticipated. Indirect impacts to these features can be avoided and/or minimized through implementation of proposed avoidance and minimization measures.

Cultural Report
Year Completed: 2025
Description: The report details an analysis of potential impacts to protected cultural resources within the project area in support of project CEQA and Section 106 compliance.

Key Outcomes: The report supports the finding of no impact to historical resources and a less-than-significant impact with mitigation incorporated to archaeological resources under CEQA as well as no adverse effect to historic properties under Section 106 of the National Historic Preservation Act.

Paleontological Resources Report
Year Completed: 2025
Description: The report details an analysis of potential impacts to paleontological resources within the project area in support of project CEQA and NEPA compliance.

Key Outcomes: The report supports the finding the project is underlain by two geologic units of low paleontological sensitivity and otherwise has a small insignificant impact footprint (Well Boreholes) on deeper geologic units of unknown paleontological sensitivity. Further paleontological resources mitigation is not recommended with adherence to Policy CO-6 in the City’s General Plan and Local Coastal Program.

Environmental Assessment
Year Completed: 2023
Description: The report details an analysis of potential environmental impacts for the project to ensure no new significant environmental effects or a substantial increase in the impact severity would result from modification of the project from the original scope.

Key Outcomes: The report supports the finding that potential impacts associated with the modified project scope are consistent with potential impacts characterized and mitigated for in the certified EIR for the original project scope. Therefore, no new or supplemental EIR is required for Phase 1 with existing documentation providing mitigation measures to minimize environmental impacts during construction and operation.

Injection and Monitoring Wells

Leaching Study
Year Completed: 2021
Description: This TM reports on the research findings of a dynamic leaching study for the purpose of evaluating the potential leachability of native soils within the project area. The constituent considered to be of principle concern to the project was Arsenic and testing was completed via water column tests from the following sources.
• Groundwater (GW): No stabilization, no chlorination, serves as control • RO Permeate (AWPF1): Lime stabilization, no chlorination, serves as favorable scenario (arsenic mitigation via lime)
• RO Permeate (AWPF2): CaCl2, NaOH, NaOCl, CO2 stabilization, free chlorine (2.5-3 mg/L Cl2, serves as unfavorable condition (oxidizing potential, no lime) Key Outcomes: Recommendations from the TM are to plan for the contingency of needing to employ arsenic management strategies at extraction wells for a period of up to two months for the duration of potential exceedances.

Anti-degradation Analysis
Year Completed: 2021
Description: This TM documents the anti-degradation analysis for the proposed injection of RW to the NCMA from the proposed AWPF to determine whether the proposed discharge is consistent with state anti- degradation policies.

State anti-degradation policy seeks to maintain the existing high quality of water to the maximum extent possible and only allows a lowering of water quality if:
• Changes in water quality are consistent with the maximum benefit to the people of the State, will not unreasonably affect present and potential beneficial uses, and will not result in water quality lower than applicable standards, and
• Waste discharge requirements for a proposed discharge will result in the best practicable treatment or control of the discharge necessary to assure:
o No pollution or nuisance, and
o Highest water quality consistent with maximum benefit to the people of the State.

Key Outcomes: The TM asserts relevant benefits from the project strongly outweigh potential impacts, and the project is consistent with providing the overall benefits of RW stated in RW policy. The project is, therefore, consistent with providing maximum benefit to the people of the state.

Injection Well Siting and Evaluation TM
Year Completed: 2021
Description: This TM describes the process used to identify the proposed injection well locations for the CCB project. Groundwater modelling determined the need for five Phase 1 injection wells and two secondary Phase 2 injection wells.

IW-1
IW-2A and IW-2B
IW-3
IW-4
IW-5A and 5B
Key Outcomes: The TM identifies complications with cost and land use as lesson learned from the construction of Test Injection Well IW-4 and Nested Monitoring Wells MW-4A and MW-4B as well as alternative location options for the remaining wells. The TM also identifies next steps for narrowing down the list of alternative sites to identify the locations best suited for the remaining wells.

Test Injection Well Construction Report
Year Completed: 2021
Description: This report documents the drilling, construction and testing activities for the implementation of two separate boreholes located in Coastal Dunes RV Park and Campground, 1001 Pacific Boulevard (Highway 1), Oceano, California 93445.

Nested Monitoring Wells MW-4A and MW-4B
Test Injection Well IW-4
Key Outcomes: The report details the successful construction of the wells as well as completion of geophysical surveys, pumping tests, water level monitoring and water quality analysis conducted for use in analysis and design of the CCB Project.

Dynamic Flow Profiling Report for City of Pismo Beach Well #23 Year Completed: 2020
Description: This report documents a downhole investigation of City Well #23 to measure flow velocities informing well modifications meant to reduce sanding within the well.

Objectives of this dynamic flow profiling included:
• Measurement of zonal flow contributions approximately steady-state pumping conditions • Estimation of impact on well production capacity due to proposed modifications • Collection of information informing design specifications of the proposed modifications Key Outcomes: The report recommends an incremental, conservative well modification as the most suitable approach for City Well #23, providing a step-by-step detail of the proposed scope of work.

Injection Well Standard Details
Year Completed: 2024

Description: The set depicts an intermediate design submittal, including typical sections and details for a proposed City Well #23 replacement and a proposed injection well.

Key Outcomes: The set includes sections and details for a proposed 500-foot louvered screen replacement of the existing City Well #23 and a proposed 500-foot wire wrap screen injection well, potentially serving as a basis of design for future wells.

Well Condition Assessment for City of Pismo Beach Well #23 Year Completed: 2025
Description: This report documents a well condition assessment of City Well #23, which has a history of excessive sand production and is one of two primary public water supply wells serving the City. The report aims to provide an assessment of the existing well, identification of the risks for continued operation, options for addressing the sanding issue, and a recommendation for the most feasible path forward, from a risk perspective, which would allow the well to continue operating as a primary well over both the short- and long- term.

The well condition assessment scope of work included the following:
• Compilation and review of prior work, including the most recent rehabilitation efforts performed in 2020 and a condition assessment performed in 2013
• Completion of a 2-hour sand test with concurrent specific capacity, drawdown, test • Discussions with City water operations staff
• Development of sanding mitigation options and associated risks, and selection of the recommended option
• Preparation of a cost estimate for the recommended option, capital improvement cost • Discussion of operational considerations and additional data collection Key Outcomes: The report asserts there is no sand mitigation option for City Well #23 that is without risks.

The proposed recommendation includes a passive approach in which the well remains unmodified with the addition of a sand separator as a short-term solution. The long-term solution would include either swaging a liner patch or installing a new liner. However, until a high-capacity replacement well is constructed and brought into service, the risk of causing additional complications from attempting further modifications is a concern. The report indicates a need to replace City Well #23 to secure the City’s long-term water supply, attributing an additional benefit to the AWPF and its scope of work.

Waste Streams Technical Reports
This section compiles the waste streams technical studies prepared to support NPDES compliance and prevent discharge hydraulic exceedances for the original, higher-capacity regional CCB concept. It summarizes the key findings, impact evaluations, and mitigation considerations that inform permitting and decision-making for the original project. The project was later redefined to a lower-capacity, City-focused facility; the updated basis and supporting documents are summarized in Section 6.

Grover Beach Sewer Master Plan
Year Completed: 2019

Description: The report details an evaluation of the City of Grover Beach’s (GB) existing sewer collection system to identify the necessary capital improvements to serve customer sewer flows over a 30-year planning horizon.

The report summarizes data for estimated existing and proposed future flow conditions with two metrics, Average Daily Flow (ADF) and Peak Hour Flow (PHF), as detailed below:
• GB Existing ADF: 0.73 MGD
• GB Existing PHF: 2.19 MGD
• GB Future ADF: 1.13 MGD
• GB Future PHF: 3.38 MGD
GB is a member agency of the SSLOCSD, which includes the City of Arroyo Grande and Oceano Community Services District. The member agencies own the SSLOCSD WWTP, ocean outfall, and trunk sewer collection system.

Allocations of SSLOCSD WWTP capacity is measured in Maximum Month (MM) flow conditions with current and design value flows for the plant listed below:
• WWTP Current Value MM: 2.8 MGD
• WWTP Design Value MM: 4.2 MGD
GB has purchased a 1.5 MGD capacity allocation with the following detailing the estimated existing and projected future flow conditions:
• GB Existing MM: 1.0 MGD
• GB Future MM: 1.5 MGD
Key Outcomes: The report projections show GB will meet their allocated capacity of 1.5 MGD of WWTP flows.

A capital improvement program was developed to meet the following objectives in response to deficiencies associated with existing and future flows:
• Identify improvements necessary to correct hydraulic deficiencies in the existing system • Identify improvements necessary to meet the demands of new development Necessary improvements to the GB sewer collection system are estimated to cost $7,123,000 with necessary improvements to the SSLOCSD sewer collection system estimated to cost $738,000.

SSLOCSD WWTP & Collection Final TM
Year Completed: 2023
Description: The report details a review of potential CCB project impacts to the SSLOCSD WWTP and its associated collection infrastructure.

The evaluation contains three separate TMs providing consideration for the following:
• Hydraulic and organic loading impacts from AWPF discharges, including waste streams and sanitary sewer, as well as injection well backwash discharges
• Quantified sewer discharge volumes from AWPF process elements associated with a 1 MGD and 4

MGD CCB
• Wastewater quality and effluent discharge for National Pollutant Discharge Elimination System (NPDES) permit compliance impacts from CCB discharges

Key Outcomes: The report recommends CCB discharges occur only during low flow conditions and at identified flow rates (250 gpm for AWPF, 600 gpm for IW-1, 450 gpm for IW-2A and IW-2B) to minimize capacity impacts to the collections systems. Anticipated impacts from additional organic loading were considered negligible. The report finds the waste equalization system to be sufficiently sized and provides additional considerations for AWPF operation and start up from a waste streams perspective. Finally, the report found final projected effluent loads were not expected to produce any NPDES exceedances. One pollutant, 2,3,7,8-TCDD (dioxin), was found to be of potential concern with additional sampling of Pismo Beach WWTP effluent recommended to evaluate impacts to the SSLOCSD WWTP.

Sanitary Sewer and Ocean Outfall Discharge Flow Analysis Year Completed: 2023
Description: The report finalizes the predicted quantity of discharge volumes from AWPF process elements associated with a 1 MGD and 4 MGD CCB. Most of the flow stream conveys to the ocean outfall used by the City of Pismo Beach and SSCLOSD with two specific waste streams ending in the SSLOCSD sanitary sewer collection system located within GB.

Key Outcomes: The report provides the following finalized expected discharge values associated with both a 1 MGD and 4 MGD CCB AWPF.

Discharges for a 1 MGD Facility:
• Combined Waste Flow to Ocean Outfall: 298,000 gpd
• Combined Waste TSS to Ocean Outfall: 26 mg/L
• Mass of TSS Sent to Ocean Outfall (Via Ocean Outfall): 65 lbs/day • Combined Waste Flow to Sewer: 14,342 gpd
• Combined Waste TSS to Sewer: 17 mg/L
• Mass of TSS Sent to Ocean Outfall (Via Sewer): 2 lbs/day Discharges for a 4 MGD Facility:
• Combined Waste Flow to Ocean Outfall: 1,034,040 gpd
• Combined Waste TSS to Ocean Outfall: 27 mg/L
• Mass of TSS Sent to Ocean Outfall (Via Ocean Outfall): 231 lbs/day • Combined Waste Flow to Sewer: 21,342 gpd
• Combined Waste TSS to Sewer: 18 mg/L
• Mass of TSS Sent to Ocean Outfall (Via Sewer): 3 lbs/day Summary
This TM compiles and summarizes the key historical documents that have shaped the CCB AWPF program through the completion of early planning, initial project definition, grant support, and preliminary design. As the program evolved from an original higher-capacity regional concept to a reduced, City-focused facility, the materials presented herein document the technical basis, funding pathway, and decision points that informed the redefined scope. Collectively, these documents are provided for reference only. • The program progressed from early planning and a regional, higher-capacity concept to a reduced, City-focused project definition and basis of design.

• Key technical work products captured in this TM include planning studies, groundwater modelling, preliminary engineering/design deliverables, and grant/supporting documentation that informed major decisions.
• Environmental technical studies supporting CEQA/NEPA compliance are compiled to document findings and mitigation considerations for the modified project configuration.

Table 10-1 summarizes the historical documents and which ones are relevant and included in the RFP.

Table 10-1: Summary of Reference Documents
Project Conception
Document Included
in RFP Relevance
2015 Pismo Beach
Recycled Water
Facilities Planning
Study
No
Establishes IPR as the foundational supplemental water
supply concept informing the overall project purpose and need.
2016 SSLOCSD
Recycled Water
Facilities Planning
Study
No
Confirms regional, collaborative IPR approach that
underpins the Central Coast Blue project delivery
framework.

Formation of Central
Coast Blue No
Defines the regional partnership, governance structure, and participating agencies that the design must
accommodate.

Initial Project
Definition
Document Included
in RFP Relevance
Central Coast Blue
Phase 1A Model Report No
Provides basis for the linear coastal injection well
concept used in subsequent project layouts and siting
assumptions.

Central Coast Blue
Phase 1B Model Report No Supports use of regional injection strategy for seawater intrusion mitigation incorporated into project objectives.

Central Coast Blue
Phase 1C Model Report No Supports design intent to reduce TDS at City Well #23 and reverse the seawater–freshwater interface.

Preliminary Engineering
Report for Central
Coast Blue
No
Establishes baseline process and infrastructure design
criteria for Phase 1 (900 AFY) and Phase 2 (3,500 AFY).

Central Coast Blue
Final Environmental
Impact Report
No
Documents approved project description, alternatives,
and mitigation measures that constrain and inform final design.

Grant Document /
Supporting
Documents

Document Included
in RFP Relevance
Aerial Geophysics No Provides subsurface conditions influencing injection well siting and design considerations.

Monitoring Network TM No
Establishes groundwater monitoring framework to be
incorporated into project monitoring and compliance
design.

Central Coast Blue Title
XVI Feasibility Study No Confirms project eligibility and scope alignment with Title XVI objectives used in defining project limits.

Grant Applications No Provides background funding context; not directly used for design.

SWRCB Proposition 1
Groundwater Grant Yes
Defines grant-required scope, conditions, and
compliance elements to be incorporated into design‑build contract documents.

Bureau of Reclamation
Title XVI WaterSmart
Grant
Yes
Establishes grant scope, budget, and conditions
informing project phasing and contractual requirements.

Initial Design
Documents
Document Included
in RFP Relevance
Geotechnical Report
(AWPF Siting) Yes Provides geotechnical parameters and site constraints used for AWPF foundation and structural design.

Geotechnical Report
(Distribution
Infrastructure)
Yes
Establishes subsurface conditions influencing pipeline
alignment, trenching, and construction methods.

Preliminary Design
Report Yes Defines updated process design criteria for Phase 1 (900 AFY) and Phase 2 (3,100 AFY) used as basis of design.
90% Design Drawings
and Technical
Specifications (AWPF)
Yes
Provides advanced design layout, equipment
configuration, and technical requirements forming the
baseline for final design.
60% Design Drawings
(Distribution
Infrastructure)
Yes
Establishes preliminary alignment, sizing, and
configuration assumptions for conveyance infrastructure.

Redefined Project
Direction
Document Included
in RFP Relevance
Central Coast Blue
Reduced Phase 1
Feasibility Analysis TM
Yes
Establishes revised reduced‑scope project (350 AFY)
forming current basis of design.

Updated Groundwater
Modelling Yes Confirms performance assumptions for single injection well operation at 350 AFY used in final design sizing.

Environmental
Technical Reports for

CEQA/NEPA

Document Included
in RFP Relevance
Biological Resource
Assessment Yes Identifies applicable mitigation measures and design constraints related to biological resources.

Cultural Report Yes Provides avoidance and mitigation requirements influencing construction methods and design layout.

Paleontological
Resources Report Yes Defines monitoring and construction requirements affecting design and construction planning.

Environmental
Assessment Yes
Confirms continued applicability of EIR mitigation
measures and environmental commitments to final
design.

Injection and
Monitoring Wells
Document Included
in RFP Relevance
Leaching Study Yes
Identifies contingent operational and design
considerations related to potential leaching mitigation measures.

Anti-Degradation
Analysis Yes
Supports regulatory basis for IPR implementation that
informs permitting and consistency with design
assumptions.

Injection Well Siting and
Evaluation TM Yes Provides siting criteria and lessons learned applicable to final injection well location and configuration.

Test Injection Well
Construction Report No
Documents construction methods and subsurface
conditions used to inform injection well design and
constructability.

Dynamic Flow Profiling
Report for City of Pismo
Beach Well #23
No
Provides hydrogeological parameters and operating
constraints for existing City Well #23.

Injection Well Standard
Details Yes Establishes preliminary depth, screening, and layout for replacement and injection wells.

Well Condition
Assessment for City of
Pismo Beach Well #23
Yes
Provides hydrogeological parameters, operating
constraints, and additional basis for replacement of
existing City Well #23.

Waste Streams
Technical Reports
Document Included
in RFP Relevance
Grover Beach Sewer
Master Plan Yes Confirms available wastewater system capacity supporting proposed discharge volumes.

SSLOCSD WWTP &
Collection Final TM Yes Defines discharge locations, system constraints, and operational conditions to be incorporated into design.

Sanitary Sewer and
Ocean Outfall
Discharge Fow Analysis
Yes
Establishes design discharge flow rates for Phase 1 (1
MGD) and Phase 2 (4 MGD) infrastructure sizing.

Exhibit D – Design-Builder's Proposal and fixed Design-Build Price

City of Pismo Beach | Request for Proposals 27

Exhibit D – Design-Builder's Proposal and fixed Design-Build Price

To be Developed and Finalized Based on the Proposals

Exhibit D: FIXED DESIGN BUILD PRICE

SUMMARY OF FIXED DESIGN BUILD PRICE

Construction Period Site Work: COST Roads, Parking, Lighting, Utilities, Site Drainage, Fencing, Gates, Mass Grading and Excavation, etc. $
Landscape and Irrigation $
Yard Piping $
Other (Specify) $
Subtotal $
Plant and Process:

AWPF Building $
MF/UF System with EQ tank $_______________
RO Membrane System $____________
UV AOP System $
Backup Generator $
Finished Water Tank $ Chlorination and Dechlorination System $ Chemical Storage and Feed Systems, including Structure $ Influent pipeline and connection to existing ocean outfall $_______________ Sewer connection to Huber Street $
Sewer connection to Barca Street $_______________
ROC connection to the existing ocean outfall $_______________ Finished Water Pumping Station and pipeline to Injection well $ Injection Well and associated pipework $_______________ Instrumentation, Control Communication, Security Systems, etc. $_______________ Electrical Equipment and associated infrastructure $ Control Room and Break Room, Mechanical Systems / HVAC $_______________ Maintenance & Storage Building (if separate structure) $ Other (Specify) $
Subtotal $ ghd.com The Power of Commitment

913,556.00
154,623.00
426,820.00
N/A
1,494,999.00
1,841,275.00
4,155,327.00
3,194,507.00
1,561,840.00
152,875.00
161,309.00
970,746.00
863,449.00
678,172.00
52,862.00
N/A
290,391.00
52,283.00
4,184,754.00
883,115.00
3,035,929.00
439,815.00
N/A
N/A
22,518,649.00

City of Pismo Beach | Request for Proposals 28

Start-Up Activities
Start-Up Activities $
Acceptance Testing Activities
Training and Support (600 hours post Substantial Completion) $ $_______________

Other (Specify) $
Subtotal $

Other Direct and Indirect Costs
Mobilization (not to exceed 2% of the Fixed D/B Price) $ Demobilization (25% of the Mobilization Price) $
Contingency $
General Conditions $
Contractor Profit $
Other (Specify) $
Subtotal $

Administrative:

Shop Drawings $
Record Documents $
Insurance (During the Design Build Work) $
Spare Parts Allowance $150,000
Performance and Payment Bonds (During Construction) $
Other (Specify) $
Subtotal $

FIXED DESIGN BUILD PRICE (2) $

Notes:

1. Respondents shall provide a breakdown of costs based on the major unit processes proposed.

2. The Fixed Design Build Price is binding and will be incorporated directly into the final Design Build Contract. The subtotals that comprise the Fixed Design Build Price are for information purposes only, however, the City may use the cost breakdown during their review of the Preliminary Schedule of Values to confirm consistency with the information presented herein.

195,431.00
206,956.00
525,239.00
N/A
122,852.00
366,817.00
91,704.00
3,487,550.00
2,821,393.00
3,618,232.00
N/A
10,385,696.00
1,776,264.00
192,281.00
729,369.00
295,694.00
1,722,491.00
4,866,099.00
39,790,682.00
150,000.00
(Engineering Services During Construction/Inspections/Testing)

DESIGN-BUILD SERVICES FOR THECENTRAL COAST BLUE ADVANCED WATER PURIFICATION FACILITY

PROPOSAL
August 13, 2026
DESIGN BUILD OPER AT E| |
A ConsolidAted WAter Group (nAsdAq: CWCo) CompAny

TABLE OF CONTENTS

PART I GENERAL REQUIREMENTS

1. TRANSMITTAL LETTER ...................................................................................................PROPOSAL FORM 2

2. FINANCIAL CAPACITY, LITIGATION & DISPUTE HISTORY, SAFETY RECORD .........PROPOSAL FORM 2 PART II PROJECT TEAM, EXPERIENCE & APPROACH ..................................1

1. PROJECT TEAM / ORGANIZATIONAL STRUCTURE ....................................1

2. KEY PERSONNEL ..................................................................................1

3. TEAM & PROJECT EXPERIENCE .............................................................1

4. PROJECT MANAGEMENT APPROACH ......................................................1

5. ENVIRONMENTAL MANAGEMENT ............................................................9

6. DESIGN BUILD QUALITY MANAGEMENT PLAN .......................................11

PART III TECHNICAL APPROACH .............................................................13

1. TREATMENT PROCESSES, EQUIPMENT SELECTION & CAPACITY ............13 REFERENCE INSTALLATIONS OF PROPOSED TREATMENT TECHNOLOGIES .....14 ANTICIPATED USEFUL LIFE OF PROPOSED SYSTEMS ........................................15 FACILITY, RELIABILITY, & OPERATIONAL REDUNDANCY OF THE PROJECT. .....15 DESIGN OF IN-PLANT PUMPING STATIONS ............................................................16

2. NON-PROCESS DESIGN & AUXILIARY FACILITIES ..................................17 NEW BUILDING ..............................................................................................................18 POWER SUPPLY & ELECTRICAL EQUIPMENT.........................................................18 INSTRUMENTATION & CONTROLS. ...........................................................................19

3. INNOVATION & DESIGN OPTIMIZATION .................................................20 PART IV CONSTRUCTION, START-UP, ACCEPTANCE & TRAINING PROCESS .......22

1. CONSTRUCTION PLANNING & CONSTRUCTION SEQUENCING .................22 CONSTRUCTION SEQUENCING ..................................................................22

2. APPROACH TO SAFETY .......................................................................24 SAFETY GOALS, STANDARDS, & GUIDELINES ..............................24 FULL-TIME, ON-SITE SAFETY COORDINATOR DESIGNATION ......25 SAFETY REVIEW PROCESS & REGULAR MEETINGS ....................25 DOCUMENTATION OF SAFETY PROCEDURES ...............................25 CONSTRUCTION TRAFFIC MANAGEMENT .....................................25 EQUIPMENT & SUBSTANCE SAFETY TRAINING ............................25 SITE ACCESS & TRACKING .............................................................25

3. DESIGN BUILD SCHEDULE ...................................................................26

4. CASH FLOW ........................................................................................27

5. APPROACH TO START-UP & TESTING, & PLANT ACCEPTANCE ...............28

6. TRAINING & SUPPORT PERIOD ............................................................30

PART V FIXED PRICE INFORMATION ...........................UNDER SEPARATE COVER

PART VI CONTRACT ..........................................................PROPOSAL FORM 1 Appendices
DESIGN BUILD QUALITY MANAGEMENT PLAN ............................................A RISK MANAGEMENT PLAN ........................................................................B DESIGN DRAWINGS & RENDERINGS ..........................................................C DB PROJECT SCHEDULE ..........................................................................D LIFECYCLE COST ANALYSIS EVALUATION CRITERIA ...................................E KEY PERSONNEL RESUME .........................................................................F

PART

GEN E R A L R E Q U I R E MENTS

I GENERAL REQUIREMENTS

perc water

DESIGN I BUILD I OPERATE DESIGN I BUILD I OPERATE
PROPOSAL FORM 2

PROPOSAL TRANSMITTAL LETTER
Rosemarie Gaglione, Public Works Director
City of Pismo Beach
760 Mattie Road
Pismo Beach, CA 93449
Re: Proposal for Central Coast Blue Water Purification Facility August 13, 2026
PERC Water Corporation (the Respondent) hereby submits its Proposal in response to the Request for Proposals for the Central Coast Blue Water Purification Facility DB Project (RFP) issued by the City of Pismo Beach (City) on August 13, 2026, as amended.

As a duly authorized representative of the Respondent, I hereby certify, represent, and warrant as follows in connection with the Proposal:

1. The Respondent acknowledges receipt of the RFP and the following addenda:

No. Date
1 June 23, 2026
2 June 26. 2026
3 July 17, 2026
4 July 17, 2026
5 July 17, 2026
6 July 21, 2026
7 July 27, 2026
8 July 29, 2026
9 August 7, 2026
The submittal of the Proposal has been duly authorized by, and in all respects is binding upon, the Respondent. Attachment 1 to this Proposal Form is a Certificate of Authorization which evidences my authority to submit the Proposal and bind the Respondent.

2. Tim Nicely, PC, CHg has replaced David O'Rourke as the Project Lead's Hydrogeologist, as David has retired since submission of the SOQ. A resume for Tim is included as Appendix C to this Proposal. All other Key Project Team Members identified in our SOQ have not changed.

3. All Sub -Consultants identified in our SOQ have not changed.

4. A list of required contractor's and specialty licenses held by Project Team members have not changed.

5. All financial information provided in the SOQ, has not adversely changed. 17520 Newhope Street, Suite 180 Fountain Valley, CA 92708 I Office: 714.352.7750 I Fax: 714.352.7765 I www.percwater.com

Proposal for Central Coast Blue Water Purification Facility City of Pismo Beach
August 13, 2026