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2022_rpt_32376_ust_61_149
APPENDIX C SOIL SAMPLE LABORATORY REPORT AND CHAIN-OF-CUSTODY DOCUMENTATION ANALYTICAL REPORT November 28, 2022 711 Stantec - San Diego, CA Sample Delivery Group:L1556725 Samples Received:11/11/2022 Project Number:185851117.1201.0400 Description:7-11 #32376 Report To:Pat McConnell 9797 Aero Drive, Ste 310 San Diego, CA 92123 Entire Report Reviewed By: November 28, 2022 [Preliminary Report] Marty Edwards III Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 1 of 55 November 28, 2022 Marty Edwards III Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 1 of 55 TABLE OF CONTENTSTABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 4 Cn: Case Narrative 9 Sr: Sample Results 10 P1-2 L1556725-01 10 P1-6 L1556725-02 11 P2-2 L1556725-03 12 P2-6 L1556725-04 13 P3-2 L1556725-05 14 P3-6 L1556725-06 15 P4-2 L1556725-07 16 P4-6 L1556725-08 17 P5-2 L1556725-09 18 P5-6 L1556725-10 19 T1-E 2 L1556725-11 20 T1-E 6 L1556725-12 21 T1-W 2 L1556725-13 22 T1-W 6 L1556725-14 23 T2-E 2 L1556725-15 24 T2-E 6 L1556725-16 25 T2-W 2 L1556725-17 26 T2-W 6 L1556725-18 27 D1-2 L1556725-19 28 D1-6 L1556725-20 29 D2-2 L1556725-21 30 D2-6 L1556725-22 31 D3-2 L1556725-23 32 D3-6 L1556725-24 33 D4-2 L1556725-25 34 D4-6 L1556725-26 35 D5-2 L1556725-27 36 D5-6 L1556725-28 37 D6-2 L1556725-29 38 D6-6 L1556725-30 39 Qc: Quality Control Summary 40 Volatile Organic Compounds (GC) by Method 8015 40 Volatile Organic Compounds (GC/MS) by Method 8260B 42 Gl: Glossary of Terms 50 Al: Accreditations & Locations 51 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 2 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 2 of 55 Sc: Sample Chain of Custody 52 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 3 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 3 of 55 SAMPLE SUMMARY Collected by Collected date/time Received date/time P1-2 L1556725-01 Solid 11/10/22 11:10 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 12:40 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1960837 1 11/11/22 19:07 11/16/22 17:47 JAH Mt. Juliet, TN Collected by Collected date/time Received date/time P1-6 L1556725-02 Solid 11/10/22 11:15 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 13:03 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1960837 1 11/11/22 19:07 11/16/22 18:30 JAH Mt. Juliet, TN Collected by Collected date/time Received date/time P2-2 L1556725-03 Solid 11/10/22 10:00 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 13:25 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1960837 1 11/11/22 19:07 11/16/22 18:52 JAH Mt. Juliet, TN Collected by Collected date/time Received date/time P2-6 L1556725-04 Solid 11/10/22 10:07 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 13:48 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1960837 1 11/11/22 19:07 11/16/22 19:13 JAH Mt. Juliet, TN Collected by Collected date/time Received date/time P3-2 L1556725-05 Solid 11/10/22 10:41 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 14:11 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1960837 1 11/11/22 19:07 11/16/22 20:03 JAH Mt. Juliet, TN Collected by Collected date/time Received date/time P3-6 L1556725-06 Solid 11/10/22 10:42 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 14:33 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1960846 1 11/11/22 19:07 11/16/22 20:36 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time P4-2 L1556725-07 Solid 11/10/22 10:39 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 14:56 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1960846 1 11/11/22 19:07 11/16/22 21:00 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961506 1 11/18/22 11:10 11/19/22 20:07 ACG Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 4 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 4 of 55 SAMPLE SUMMARY Collected by Collected date/time Received date/time P4-6 L1556725-08 Solid 11/10/22 10:44 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 15:19 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1960846 1 11/11/22 19:07 11/16/22 21:24 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961506 1 11/18/22 11:10 11/19/22 20:29 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time P5-2 L1556725-09 Solid 11/10/22 10:58 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 15:41 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1960846 1 11/11/22 19:07 11/16/22 21:49 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1962997 1 11/11/22 19:07 11/22/22 20:06 ADM Mt. Juliet, TN Collected by Collected date/time Received date/time P5-6 L1556725-10 Solid 11/10/22 11:02 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 16:04 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1960846 1 11/11/22 19:07 11/16/22 22:13 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time T1-E 2 L1556725-11 Solid 11/10/22 11:28 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 16:26 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1964463 1 11/23/22 17:11 11/25/22 19:24 ADM Mt. Juliet, TN Collected by Collected date/time Received date/time T1-E 6 L1556725-12 Solid 11/10/22 11:34 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 16:49 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/17/22 19:48 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time T1-W 2 L1556725-13 Solid 11/10/22 11:50 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 17:12 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/17/22 20:13 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time T1-W 6 L1556725-14 Solid 11/10/22 11:55 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 17:34 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/17/22 20:38 ACG Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 5 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 5 of 55 SAMPLE SUMMARY Collected by Collected date/time Received date/time T2-E 2 L1556725-15 Solid 11/10/22 11:38 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 17:57 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/17/22 21:03 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time T2-E 6 L1556725-16 Solid 11/10/22 11:42 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 18:20 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/17/22 21:28 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time T2-W 2 L1556725-17 Solid 11/10/22 12:00 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 18:42 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/17/22 21:52 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time T2-W 6 L1556725-18 Solid 11/10/22 12:05 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 19:05 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/17/22 22:17 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time D1-2 L1556725-19 Solid 11/10/22 10:12 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1959516 1 11/11/22 19:07 11/16/22 19:28 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/17/22 22:42 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time D1-6 L1556725-20 Solid 11/10/22 10:17 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1960281 1 11/11/22 19:07 11/16/22 16:51 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/17/22 23:07 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time D2-2 L1556725-21 Solid 11/10/22 10:30 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1960281 1 11/11/22 19:07 11/16/22 17:14 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/17/22 23:31 ACG Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 6 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 6 of 55 SAMPLE SUMMARY Collected by Collected date/time Received date/time D2-6 L1556725-22 Solid 11/10/22 10:35 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1960281 1 11/11/22 19:07 11/16/22 17:38 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/17/22 23:56 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time D3-2 L1556725-23 Solid 11/10/22 11:20 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1960281 1 11/11/22 19:07 11/16/22 18:01 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/18/22 00:21 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time D3-6 L1556725-24 Solid 11/10/22 11:25 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1960281 1 11/11/22 19:07 11/16/22 18:24 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/18/22 00:46 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time D4-2 L1556725-25 Solid 11/10/22 11:46 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1960281 1 11/11/22 19:07 11/16/22 18:48 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/18/22 01:10 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time D4-6 L1556725-26 Solid 11/10/22 11:49 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1960281 1 11/11/22 19:07 11/16/22 19:11 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/18/22 01:35 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time D5-2 L1556725-27 Solid 11/10/22 11:04 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1960281 1 11/11/22 19:07 11/16/22 19:35 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961237 1 11/11/22 19:07 11/18/22 02:00 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time D5-6 L1556725-28 Solid 11/10/22 11:07 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1960281 1 11/11/22 19:07 11/16/22 19:58 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1963817 1 11/23/22 11:48 11/23/22 13:14 ADM Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 7 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 7 of 55 SAMPLE SUMMARY Collected by Collected date/time Received date/time D6-2 L1556725-29 Solid 11/10/22 10:52 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1960281 1 11/11/22 19:07 11/16/22 20:21 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961306 1 11/11/22 19:07 11/17/22 17:17 ADM Mt. Juliet, TN Collected by Collected date/time Received date/time D6-6 L1556725-30 Solid 11/10/22 10:54 11/11/22 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC) by Method 8015 WG1960281 1 11/11/22 19:07 11/16/22 20:44 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260B WG1961306 1 11/11/22 19:07 11/17/22 18:05 ADM Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 8 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 8 of 55 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Marty Edwards III Project Manager 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 9 of 55 Marty Edwards III Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 9 of 55 SAMPLE RESULTS - 01 L1556725 P1-2 Collected date/time: 11/10/22 11:10 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND J3 0.100 1 11/16/2022 12:40 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.4 77.0-120 11/16/2022 12:40 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/16/2022 17:47 WG1960837 Ethylbenzene ND 0.00100 1 11/16/2022 17:47 WG1960837 Toluene ND 0.00500 1 11/16/2022 17:47 WG1960837 Xylenes, Total ND 0.00300 1 11/16/2022 17:47 WG1960837 Di-isopropyl ether ND 0.00100 1 11/16/2022 17:47 WG1960837 Ethyl tert-butyl ether ND 0.00100 1 11/16/2022 17:47 WG1960837 Methyl tert-butyl ether ND 0.00100 1 11/16/2022 17:47 WG1960837 tert-Butyl alcohol 0.00640 B 0.00500 1 11/16/2022 17:47 WG1960837 tert-Amyl Methyl Ether ND 0.00100 1 11/16/2022 17:47 WG1960837 (S) Toluene-d8 102 75.0-131 11/16/2022 17:47 WG1960837 (S) 4-Bromofluorobenzene 93.9 67.0-138 11/16/2022 17:47 WG1960837 (S) 1,2-Dichloroethane-d4 87.1 70.0-130 11/16/2022 17:47 WG1960837 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 10 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 10 of 55 SAMPLE RESULTS - 02 L1556725 P1-6 Collected date/time: 11/10/22 11:15 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 13:03 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.5 77.0-120 11/16/2022 13:03 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/16/2022 18:30 WG1960837 Ethylbenzene ND 0.00100 1 11/16/2022 18:30 WG1960837 Toluene ND 0.00500 1 11/16/2022 18:30 WG1960837 Xylenes, Total ND 0.00300 1 11/16/2022 18:30 WG1960837 Di-isopropyl ether ND 0.00100 1 11/16/2022 18:30 WG1960837 Ethyl tert-butyl ether ND 0.00100 1 11/16/2022 18:30 WG1960837 Methyl tert-butyl ether ND 0.00100 1 11/16/2022 18:30 WG1960837 tert-Butyl alcohol 0.00762 B 0.00500 1 11/16/2022 18:30 WG1960837 tert-Amyl Methyl Ether ND 0.00100 1 11/16/2022 18:30 WG1960837 (S) Toluene-d8 100 75.0-131 11/16/2022 18:30 WG1960837 (S) 4-Bromofluorobenzene 91.9 67.0-138 11/16/2022 18:30 WG1960837 (S) 1,2-Dichloroethane-d4 88.6 70.0-130 11/16/2022 18:30 WG1960837 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 11 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 11 of 55 SAMPLE RESULTS - 03 L1556725 P2-2 Collected date/time: 11/10/22 10:00 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 13:25 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.5 77.0-120 11/16/2022 13:25 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/16/2022 18:52 WG1960837 Ethylbenzene ND 0.00100 1 11/16/2022 18:52 WG1960837 Toluene ND 0.00500 1 11/16/2022 18:52 WG1960837 Xylenes, Total ND 0.00300 1 11/16/2022 18:52 WG1960837 Di-isopropyl ether ND 0.00100 1 11/16/2022 18:52 WG1960837 Ethyl tert-butyl ether ND 0.00100 1 11/16/2022 18:52 WG1960837 Methyl tert-butyl ether ND 0.00100 1 11/16/2022 18:52 WG1960837 tert-Butyl alcohol 0.00662 B 0.00500 1 11/16/2022 18:52 WG1960837 tert-Amyl Methyl Ether ND 0.00100 1 11/16/2022 18:52 WG1960837 (S) Toluene-d8 103 75.0-131 11/16/2022 18:52 WG1960837 (S) 4-Bromofluorobenzene 95.1 67.0-138 11/16/2022 18:52 WG1960837 (S) 1,2-Dichloroethane-d4 92.6 70.0-130 11/16/2022 18:52 WG1960837 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 12 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 12 of 55 SAMPLE RESULTS - 04 L1556725 P2-6 Collected date/time: 11/10/22 10:07 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 13:48 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.5 77.0-120 11/16/2022 13:48 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/16/2022 19:13 WG1960837 Ethylbenzene ND 0.00100 1 11/16/2022 19:13 WG1960837 Toluene ND 0.00500 1 11/16/2022 19:13 WG1960837 Xylenes, Total ND 0.00300 1 11/16/2022 19:13 WG1960837 Di-isopropyl ether ND 0.00100 1 11/16/2022 19:13 WG1960837 Ethyl tert-butyl ether ND 0.00100 1 11/16/2022 19:13 WG1960837 Methyl tert-butyl ether ND 0.00100 1 11/16/2022 19:13 WG1960837 tert-Butyl alcohol 0.00581 B 0.00500 1 11/16/2022 19:13 WG1960837 tert-Amyl Methyl Ether ND 0.00100 1 11/16/2022 19:13 WG1960837 (S) Toluene-d8 109 75.0-131 11/16/2022 19:13 WG1960837 (S) 4-Bromofluorobenzene 109 67.0-138 11/16/2022 19:13 WG1960837 (S) 1,2-Dichloroethane-d4 95.3 70.0-130 11/16/2022 19:13 WG1960837 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 13 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 13 of 55 SAMPLE RESULTS - 05 L1556725 P3-2 Collected date/time: 11/10/22 10:41 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 14:11 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.6 77.0-120 11/16/2022 14:11 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/16/2022 20:03 WG1960837 Ethylbenzene ND 0.00100 1 11/16/2022 20:03 WG1960837 Toluene ND 0.00500 1 11/16/2022 20:03 WG1960837 Xylenes, Total ND 0.00300 1 11/16/2022 20:03 WG1960837 Di-isopropyl ether ND 0.00100 1 11/16/2022 20:03 WG1960837 Ethyl tert-butyl ether ND 0.00100 1 11/16/2022 20:03 WG1960837 Methyl tert-butyl ether ND 0.00100 1 11/16/2022 20:03 WG1960837 tert-Butyl alcohol 0.00792 B 0.00500 1 11/16/2022 20:03 WG1960837 tert-Amyl Methyl Ether ND 0.00100 1 11/16/2022 20:03 WG1960837 (S) Toluene-d8 104 75.0-131 11/16/2022 20:03 WG1960837 (S) 4-Bromofluorobenzene 94.7 67.0-138 11/16/2022 20:03 WG1960837 (S) 1,2-Dichloroethane-d4 92.3 70.0-130 11/16/2022 20:03 WG1960837 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 14 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 14 of 55 SAMPLE RESULTS - 06 L1556725 P3-6 Collected date/time: 11/10/22 10:42 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 14:33 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.7 77.0-120 11/16/2022 14:33 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/16/2022 20:36 WG1960846 Ethylbenzene ND 0.00100 1 11/16/2022 20:36 WG1960846 Toluene ND 0.00500 1 11/16/2022 20:36 WG1960846 Xylenes, Total ND J4 0.00300 1 11/16/2022 20:36 WG1960846 Di-isopropyl ether ND 0.00100 1 11/16/2022 20:36 WG1960846 Ethyl tert-butyl ether ND 0.00100 1 11/16/2022 20:36 WG1960846 Methyl tert-butyl ether ND 0.00100 1 11/16/2022 20:36 WG1960846 tert-Butyl alcohol ND 0.00500 1 11/16/2022 20:36 WG1960846 tert-Amyl Methyl Ether ND 0.00100 1 11/16/2022 20:36 WG1960846 (S) Toluene-d8 114 75.0-131 11/16/2022 20:36 WG1960846 (S) 4-Bromofluorobenzene 99.8 67.0-138 11/16/2022 20:36 WG1960846 (S) 1,2-Dichloroethane-d4 91.5 70.0-130 11/16/2022 20:36 WG1960846 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 15 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 15 of 55 SAMPLE RESULTS - 07 L1556725 P4-2 Collected date/time: 11/10/22 10:39 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 14:56 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.8 77.0-120 11/16/2022 14:56 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/16/2022 21:00 WG1960846 Ethylbenzene ND 0.00100 1 11/16/2022 21:00 WG1960846 Toluene ND 0.00500 1 11/16/2022 21:00 WG1960846 Xylenes, Total ND 0.00300 1 11/19/2022 20:07 WG1961506 Di-isopropyl ether ND 0.00100 1 11/16/2022 21:00 WG1960846 Ethyl tert-butyl ether ND 0.00100 1 11/16/2022 21:00 WG1960846 Methyl tert-butyl ether ND 0.00100 1 11/16/2022 21:00 WG1960846 tert-Butyl alcohol ND 0.00500 1 11/16/2022 21:00 WG1960846 tert-Amyl Methyl Ether ND 0.00100 1 11/16/2022 21:00 WG1960846 (S) Toluene-d8 113 75.0-131 11/16/2022 21:00 WG1960846 (S) Toluene-d8 105 75.0-131 11/19/2022 20:07 WG1961506 (S) 4-Bromofluorobenzene 101 67.0-138 11/16/2022 21:00 WG1960846 (S) 4-Bromofluorobenzene 99.1 67.0-138 11/19/2022 20:07 WG1961506 (S) 1,2-Dichloroethane-d4 91.9 70.0-130 11/16/2022 21:00 WG1960846 (S) 1,2-Dichloroethane-d4 93.4 70.0-130 11/19/2022 20:07 WG1961506 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 16 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 16 of 55 SAMPLE RESULTS - 08 L1556725 P4-6 Collected date/time: 11/10/22 10:44 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 15:19 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.6 77.0-120 11/16/2022 15:19 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/16/2022 21:24 WG1960846 Ethylbenzene ND 0.00100 1 11/16/2022 21:24 WG1960846 Toluene ND 0.00500 1 11/16/2022 21:24 WG1960846 Xylenes, Total ND 0.00300 1 11/19/2022 20:29 WG1961506 Di-isopropyl ether ND 0.00100 1 11/16/2022 21:24 WG1960846 Ethyl tert-butyl ether ND 0.00100 1 11/16/2022 21:24 WG1960846 Methyl tert-butyl ether ND 0.00100 1 11/16/2022 21:24 WG1960846 tert-Butyl alcohol ND 0.00500 1 11/16/2022 21:24 WG1960846 tert-Amyl Methyl Ether ND 0.00100 1 11/16/2022 21:24 WG1960846 (S) Toluene-d8 113 75.0-131 11/16/2022 21:24 WG1960846 (S) Toluene-d8 106 75.0-131 11/19/2022 20:29 WG1961506 (S) 4-Bromofluorobenzene 98.9 67.0-138 11/16/2022 21:24 WG1960846 (S) 4-Bromofluorobenzene 102 67.0-138 11/19/2022 20:29 WG1961506 (S) 1,2-Dichloroethane-d4 91.8 70.0-130 11/16/2022 21:24 WG1960846 (S) 1,2-Dichloroethane-d4 94.1 70.0-130 11/19/2022 20:29 WG1961506 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 17 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 17 of 55 SAMPLE RESULTS - 09 L1556725 P5-2 Collected date/time: 11/10/22 10:58 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 15:41 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.5 77.0-120 11/16/2022 15:41 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/16/2022 21:49 WG1960846 Ethylbenzene ND 0.00100 1 11/16/2022 21:49 WG1960846 Toluene ND 0.00500 1 11/16/2022 21:49 WG1960846 Xylenes, Total ND 0.00300 1 11/22/2022 20:06 WG1962997 Di-isopropyl ether ND 0.00100 1 11/16/2022 21:49 WG1960846 Ethyl tert-butyl ether ND 0.00100 1 11/16/2022 21:49 WG1960846 Methyl tert-butyl ether ND 0.00100 1 11/16/2022 21:49 WG1960846 tert-Butyl alcohol ND 0.00500 1 11/16/2022 21:49 WG1960846 tert-Amyl Methyl Ether ND 0.00100 1 11/16/2022 21:49 WG1960846 (S) Toluene-d8 115 75.0-131 11/16/2022 21:49 WG1960846 (S) Toluene-d8 112 75.0-131 11/22/2022 20:06 WG1962997 (S) 4-Bromofluorobenzene 98.1 67.0-138 11/16/2022 21:49 WG1960846 (S) 4-Bromofluorobenzene 107 67.0-138 11/22/2022 20:06 WG1962997 (S) 1,2-Dichloroethane-d4 92.4 70.0-130 11/16/2022 21:49 WG1960846 (S) 1,2-Dichloroethane-d4 88.2 70.0-130 11/22/2022 20:06 WG1962997 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 18 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 18 of 55 SAMPLE RESULTS - 10 L1556725 P5-6 Collected date/time: 11/10/22 11:02 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 16:04 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.2 77.0-120 11/16/2022 16:04 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/16/2022 22:13 WG1960846 Ethylbenzene ND 0.00100 1 11/16/2022 22:13 WG1960846 Toluene ND 0.00500 1 11/16/2022 22:13 WG1960846 Xylenes, Total ND J4 0.00300 1 11/16/2022 22:13 WG1960846 Di-isopropyl ether ND 0.00100 1 11/16/2022 22:13 WG1960846 Ethyl tert-butyl ether ND 0.00100 1 11/16/2022 22:13 WG1960846 Methyl tert-butyl ether ND 0.00100 1 11/16/2022 22:13 WG1960846 tert-Butyl alcohol ND 0.00500 1 11/16/2022 22:13 WG1960846 tert-Amyl Methyl Ether ND 0.00100 1 11/16/2022 22:13 WG1960846 (S) Toluene-d8 115 75.0-131 11/16/2022 22:13 WG1960846 (S) 4-Bromofluorobenzene 100 67.0-138 11/16/2022 22:13 WG1960846 (S) 1,2-Dichloroethane-d4 91.0 70.0-130 11/16/2022 22:13 WG1960846 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 19 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 19 of 55 SAMPLE RESULTS - 11 L1556725 T1-E 2 Collected date/time: 11/10/22 11:28 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 16:26 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.9 77.0-120 11/16/2022 16:26 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/25/2022 19:24 WG1964463 Ethylbenzene ND 0.00100 1 11/25/2022 19:24 WG1964463 Toluene ND 0.00500 1 11/25/2022 19:24 WG1964463 Xylenes, Total ND 0.00300 1 11/25/2022 19:24 WG1964463 Di-isopropyl ether ND 0.00100 1 11/25/2022 19:24 WG1964463 Ethyl tert-butyl ether ND 0.00100 1 11/25/2022 19:24 WG1964463 Methyl tert-butyl ether ND 0.00100 1 11/25/2022 19:24 WG1964463 tert-Butyl alcohol ND 0.00500 1 11/25/2022 19:24 WG1964463 tert-Amyl Methyl Ether ND 0.00100 1 11/25/2022 19:24 WG1964463 (S) Toluene-d8 113 75.0-131 11/25/2022 19:24 WG1964463 (S) 4-Bromofluorobenzene 105 67.0-138 11/25/2022 19:24 WG1964463 (S) 1,2-Dichloroethane-d4 93.3 70.0-130 11/25/2022 19:24 WG1964463 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 20 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 20 of 55 SAMPLE RESULTS - 12 L1556725 T1-E 6 Collected date/time: 11/10/22 11:34 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 16:49 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.7 77.0-120 11/16/2022 16:49 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 19:48 WG1961237 Ethylbenzene ND 0.00100 1 11/17/2022 19:48 WG1961237 Toluene ND 0.00500 1 11/17/2022 19:48 WG1961237 Xylenes, Total ND 0.00300 1 11/17/2022 19:48 WG1961237 Di-isopropyl ether ND 0.00100 1 11/17/2022 19:48 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 19:48 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 19:48 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/17/2022 19:48 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 19:48 WG1961237 (S) Toluene-d8 111 75.0-131 11/17/2022 19:48 WG1961237 (S) 4-Bromofluorobenzene 103 67.0-138 11/17/2022 19:48 WG1961237 (S) 1,2-Dichloroethane-d4 97.1 70.0-130 11/17/2022 19:48 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 21 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 21 of 55 SAMPLE RESULTS - 13 L1556725 T1-W 2 Collected date/time: 11/10/22 11:50 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 17:12 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.6 77.0-120 11/16/2022 17:12 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 20:13 WG1961237 Ethylbenzene ND 0.00100 1 11/17/2022 20:13 WG1961237 Toluene ND 0.00500 1 11/17/2022 20:13 WG1961237 Xylenes, Total ND 0.00300 1 11/17/2022 20:13 WG1961237 Di-isopropyl ether ND 0.00100 1 11/17/2022 20:13 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 20:13 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 20:13 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/17/2022 20:13 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 20:13 WG1961237 (S) Toluene-d8 111 75.0-131 11/17/2022 20:13 WG1961237 (S) 4-Bromofluorobenzene 104 67.0-138 11/17/2022 20:13 WG1961237 (S) 1,2-Dichloroethane-d4 98.6 70.0-130 11/17/2022 20:13 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 22 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 22 of 55 SAMPLE RESULTS - 14 L1556725 T1-W 6 Collected date/time: 11/10/22 11:55 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 17:34 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.5 77.0-120 11/16/2022 17:34 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 20:38 WG1961237 Ethylbenzene ND 0.00100 1 11/17/2022 20:38 WG1961237 Toluene ND 0.00500 1 11/17/2022 20:38 WG1961237 Xylenes, Total ND 0.00300 1 11/17/2022 20:38 WG1961237 Di-isopropyl ether ND 0.00100 1 11/17/2022 20:38 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 20:38 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 20:38 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/17/2022 20:38 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 20:38 WG1961237 (S) Toluene-d8 110 75.0-131 11/17/2022 20:38 WG1961237 (S) 4-Bromofluorobenzene 105 67.0-138 11/17/2022 20:38 WG1961237 (S) 1,2-Dichloroethane-d4 101 70.0-130 11/17/2022 20:38 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 23 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 23 of 55 SAMPLE RESULTS - 15 L1556725 T2-E 2 Collected date/time: 11/10/22 11:38 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 17:57 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.5 77.0-120 11/16/2022 17:57 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 21:03 WG1961237 Ethylbenzene ND 0.00100 1 11/17/2022 21:03 WG1961237 Toluene ND 0.00500 1 11/17/2022 21:03 WG1961237 Xylenes, Total ND 0.00300 1 11/17/2022 21:03 WG1961237 Di-isopropyl ether ND 0.00100 1 11/17/2022 21:03 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 21:03 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 21:03 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/17/2022 21:03 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 21:03 WG1961237 (S) Toluene-d8 111 75.0-131 11/17/2022 21:03 WG1961237 (S) 4-Bromofluorobenzene 105 67.0-138 11/17/2022 21:03 WG1961237 (S) 1,2-Dichloroethane-d4 99.9 70.0-130 11/17/2022 21:03 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 24 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 24 of 55 SAMPLE RESULTS - 16 L1556725 T2-E 6 Collected date/time: 11/10/22 11:42 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 18:20 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.6 77.0-120 11/16/2022 18:20 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 21:28 WG1961237 Ethylbenzene ND 0.00100 1 11/17/2022 21:28 WG1961237 Toluene ND 0.00500 1 11/17/2022 21:28 WG1961237 Xylenes, Total ND 0.00300 1 11/17/2022 21:28 WG1961237 Di-isopropyl ether ND 0.00100 1 11/17/2022 21:28 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 21:28 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 21:28 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/17/2022 21:28 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 21:28 WG1961237 (S) Toluene-d8 111 75.0-131 11/17/2022 21:28 WG1961237 (S) 4-Bromofluorobenzene 102 67.0-138 11/17/2022 21:28 WG1961237 (S) 1,2-Dichloroethane-d4 102 70.0-130 11/17/2022 21:28 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 25 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 25 of 55 SAMPLE RESULTS - 17 L1556725 T2-W 2 Collected date/time: 11/10/22 12:00 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 18:42 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.7 77.0-120 11/16/2022 18:42 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 21:52 WG1961237 Ethylbenzene ND 0.00100 1 11/17/2022 21:52 WG1961237 Toluene ND 0.00500 1 11/17/2022 21:52 WG1961237 Xylenes, Total ND 0.00300 1 11/17/2022 21:52 WG1961237 Di-isopropyl ether ND 0.00100 1 11/17/2022 21:52 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 21:52 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 21:52 WG1961237 tert-Butyl alcohol 0.00505 0.00500 1 11/17/2022 21:52 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 21:52 WG1961237 (S) Toluene-d8 112 75.0-131 11/17/2022 21:52 WG1961237 (S) 4-Bromofluorobenzene 103 67.0-138 11/17/2022 21:52 WG1961237 (S) 1,2-Dichloroethane-d4 99.4 70.0-130 11/17/2022 21:52 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 26 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 26 of 55 SAMPLE RESULTS - 18 L1556725 T2-W 6 Collected date/time: 11/10/22 12:05 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 19:05 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.4 77.0-120 11/16/2022 19:05 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 22:17 WG1961237 Ethylbenzene ND 0.00100 1 11/17/2022 22:17 WG1961237 Toluene ND 0.00500 1 11/17/2022 22:17 WG1961237 Xylenes, Total ND 0.00300 1 11/17/2022 22:17 WG1961237 Di-isopropyl ether ND 0.00100 1 11/17/2022 22:17 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 22:17 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 22:17 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/17/2022 22:17 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 22:17 WG1961237 (S) Toluene-d8 110 75.0-131 11/17/2022 22:17 WG1961237 (S) 4-Bromofluorobenzene 102 67.0-138 11/17/2022 22:17 WG1961237 (S) 1,2-Dichloroethane-d4 100 70.0-130 11/17/2022 22:17 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 27 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 27 of 55 SAMPLE RESULTS - 19 L1556725 D1-2 Collected date/time: 11/10/22 10:12 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 19:28 WG1959516 (S) a,a,a-Trifluorotoluene(FID) 97.6 77.0-120 11/16/2022 19:28 WG1959516 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene 0.00941 0.00100 1 11/17/2022 22:42 WG1961237 Ethylbenzene ND 0.00100 1 11/17/2022 22:42 WG1961237 Toluene ND 0.00500 1 11/17/2022 22:42 WG1961237 Xylenes, Total ND 0.00300 1 11/17/2022 22:42 WG1961237 Di-isopropyl ether ND 0.00100 1 11/17/2022 22:42 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 22:42 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 22:42 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/17/2022 22:42 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 22:42 WG1961237 (S) Toluene-d8 111 75.0-131 11/17/2022 22:42 WG1961237 (S) 4-Bromofluorobenzene 103 67.0-138 11/17/2022 22:42 WG1961237 (S) 1,2-Dichloroethane-d4 98.2 70.0-130 11/17/2022 22:42 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 28 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 28 of 55 SAMPLE RESULTS - 20 L1556725 D1-6 Collected date/time: 11/10/22 10:17 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 16:51 WG1960281 (S) a,a,a-Trifluorotoluene(FID) 99.6 77.0-120 11/16/2022 16:51 WG1960281 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 23:07 WG1961237 Ethylbenzene ND 0.00100 1 11/17/2022 23:07 WG1961237 Toluene ND 0.00500 1 11/17/2022 23:07 WG1961237 Xylenes, Total ND 0.00300 1 11/17/2022 23:07 WG1961237 Di-isopropyl ether ND 0.00100 1 11/17/2022 23:07 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 23:07 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 23:07 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/17/2022 23:07 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 23:07 WG1961237 (S) Toluene-d8 111 75.0-131 11/17/2022 23:07 WG1961237 (S) 4-Bromofluorobenzene 102 67.0-138 11/17/2022 23:07 WG1961237 (S) 1,2-Dichloroethane-d4 106 70.0-130 11/17/2022 23:07 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 29 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 29 of 55 SAMPLE RESULTS - 21 L1556725 D2-2 Collected date/time: 11/10/22 10:30 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 17:14 WG1960281 (S) a,a,a-Trifluorotoluene(FID) 101 77.0-120 11/16/2022 17:14 WG1960281 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 23:31 WG1961237 Ethylbenzene ND 0.00100 1 11/17/2022 23:31 WG1961237 Toluene ND 0.00500 1 11/17/2022 23:31 WG1961237 Xylenes, Total ND 0.00300 1 11/17/2022 23:31 WG1961237 Di-isopropyl ether ND 0.00100 1 11/17/2022 23:31 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 23:31 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 23:31 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/17/2022 23:31 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 23:31 WG1961237 (S) Toluene-d8 110 75.0-131 11/17/2022 23:31 WG1961237 (S) 4-Bromofluorobenzene 99.9 67.0-138 11/17/2022 23:31 WG1961237 (S) 1,2-Dichloroethane-d4 99.9 70.0-130 11/17/2022 23:31 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 30 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 30 of 55 SAMPLE RESULTS - 22 L1556725 D2-6 Collected date/time: 11/10/22 10:35 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 17:38 WG1960281 (S) a,a,a-Trifluorotoluene(FID) 101 77.0-120 11/16/2022 17:38 WG1960281 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 23:56 WG1961237 Ethylbenzene ND 0.00100 1 11/17/2022 23:56 WG1961237 Toluene ND 0.00500 1 11/17/2022 23:56 WG1961237 Xylenes, Total ND 0.00300 1 11/17/2022 23:56 WG1961237 Di-isopropyl ether ND 0.00100 1 11/17/2022 23:56 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 23:56 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 23:56 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/17/2022 23:56 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 23:56 WG1961237 (S) Toluene-d8 111 75.0-131 11/17/2022 23:56 WG1961237 (S) 4-Bromofluorobenzene 99.2 67.0-138 11/17/2022 23:56 WG1961237 (S) 1,2-Dichloroethane-d4 100 70.0-130 11/17/2022 23:56 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 31 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 31 of 55 SAMPLE RESULTS - 23 L1556725 D3-2 Collected date/time: 11/10/22 11:20 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 18:01 WG1960281 (S) a,a,a-Trifluorotoluene(FID) 101 77.0-120 11/16/2022 18:01 WG1960281 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/18/2022 00:21 WG1961237 Ethylbenzene ND 0.00100 1 11/18/2022 00:21 WG1961237 Toluene ND 0.00500 1 11/18/2022 00:21 WG1961237 Xylenes, Total ND 0.00300 1 11/18/2022 00:21 WG1961237 Di-isopropyl ether ND 0.00100 1 11/18/2022 00:21 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/18/2022 00:21 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/18/2022 00:21 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/18/2022 00:21 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/18/2022 00:21 WG1961237 (S) Toluene-d8 110 75.0-131 11/18/2022 00:21 WG1961237 (S) 4-Bromofluorobenzene 98.4 67.0-138 11/18/2022 00:21 WG1961237 (S) 1,2-Dichloroethane-d4 101 70.0-130 11/18/2022 00:21 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 32 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 32 of 55 SAMPLE RESULTS - 24 L1556725 D3-6 Collected date/time: 11/10/22 11:25 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 18:24 WG1960281 (S) a,a,a-Trifluorotoluene(FID) 100 77.0-120 11/16/2022 18:24 WG1960281 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/18/2022 00:46 WG1961237 Ethylbenzene ND 0.00100 1 11/18/2022 00:46 WG1961237 Toluene ND 0.00500 1 11/18/2022 00:46 WG1961237 Xylenes, Total ND 0.00300 1 11/18/2022 00:46 WG1961237 Di-isopropyl ether ND 0.00100 1 11/18/2022 00:46 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/18/2022 00:46 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/18/2022 00:46 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/18/2022 00:46 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/18/2022 00:46 WG1961237 (S) Toluene-d8 110 75.0-131 11/18/2022 00:46 WG1961237 (S) 4-Bromofluorobenzene 99.4 67.0-138 11/18/2022 00:46 WG1961237 (S) 1,2-Dichloroethane-d4 102 70.0-130 11/18/2022 00:46 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 33 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 33 of 55 SAMPLE RESULTS - 25 L1556725 D4-2 Collected date/time: 11/10/22 11:46 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 18:48 WG1960281 (S) a,a,a-Trifluorotoluene(FID) 99.6 77.0-120 11/16/2022 18:48 WG1960281 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/18/2022 01:10 WG1961237 Ethylbenzene ND 0.00100 1 11/18/2022 01:10 WG1961237 Toluene ND 0.00500 1 11/18/2022 01:10 WG1961237 Xylenes, Total ND 0.00300 1 11/18/2022 01:10 WG1961237 Di-isopropyl ether ND 0.00100 1 11/18/2022 01:10 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/18/2022 01:10 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/18/2022 01:10 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/18/2022 01:10 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/18/2022 01:10 WG1961237 (S) Toluene-d8 111 75.0-131 11/18/2022 01:10 WG1961237 (S) 4-Bromofluorobenzene 101 67.0-138 11/18/2022 01:10 WG1961237 (S) 1,2-Dichloroethane-d4 103 70.0-130 11/18/2022 01:10 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 34 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 34 of 55 SAMPLE RESULTS - 26 L1556725 D4-6 Collected date/time: 11/10/22 11:49 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 19:11 WG1960281 (S) a,a,a-Trifluorotoluene(FID) 101 77.0-120 11/16/2022 19:11 WG1960281 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/18/2022 01:35 WG1961237 Ethylbenzene ND 0.00100 1 11/18/2022 01:35 WG1961237 Toluene ND 0.00500 1 11/18/2022 01:35 WG1961237 Xylenes, Total ND 0.00300 1 11/18/2022 01:35 WG1961237 Di-isopropyl ether ND 0.00100 1 11/18/2022 01:35 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/18/2022 01:35 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/18/2022 01:35 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/18/2022 01:35 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/18/2022 01:35 WG1961237 (S) Toluene-d8 111 75.0-131 11/18/2022 01:35 WG1961237 (S) 4-Bromofluorobenzene 101 67.0-138 11/18/2022 01:35 WG1961237 (S) 1,2-Dichloroethane-d4 102 70.0-130 11/18/2022 01:35 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 35 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 35 of 55 SAMPLE RESULTS - 27 L1556725 D5-2 Collected date/time: 11/10/22 11:04 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 19:35 WG1960281 (S) a,a,a-Trifluorotoluene(FID) 99.8 77.0-120 11/16/2022 19:35 WG1960281 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/18/2022 02:00 WG1961237 Ethylbenzene ND 0.00100 1 11/18/2022 02:00 WG1961237 Toluene ND 0.00500 1 11/18/2022 02:00 WG1961237 Xylenes, Total ND 0.00300 1 11/18/2022 02:00 WG1961237 Di-isopropyl ether ND 0.00100 1 11/18/2022 02:00 WG1961237 Ethyl tert-butyl ether ND 0.00100 1 11/18/2022 02:00 WG1961237 Methyl tert-butyl ether ND 0.00100 1 11/18/2022 02:00 WG1961237 tert-Butyl alcohol ND 0.00500 1 11/18/2022 02:00 WG1961237 tert-Amyl Methyl Ether ND 0.00100 1 11/18/2022 02:00 WG1961237 (S) Toluene-d8 113 75.0-131 11/18/2022 02:00 WG1961237 (S) 4-Bromofluorobenzene 103 67.0-138 11/18/2022 02:00 WG1961237 (S) 1,2-Dichloroethane-d4 103 70.0-130 11/18/2022 02:00 WG1961237 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 36 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 36 of 55 SAMPLE RESULTS - 28 L1556725 D5-6 Collected date/time: 11/10/22 11:07 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 19:58 WG1960281 (S) a,a,a-Trifluorotoluene(FID) 101 77.0-120 11/16/2022 19:58 WG1960281 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/23/2022 13:14 WG1963817 Ethylbenzene ND 0.00100 1 11/23/2022 13:14 WG1963817 Toluene ND 0.00500 1 11/23/2022 13:14 WG1963817 Xylenes, Total ND 0.00300 1 11/23/2022 13:14 WG1963817 Di-isopropyl ether ND 0.00100 1 11/23/2022 13:14 WG1963817 Ethyl tert-butyl ether ND 0.00100 1 11/23/2022 13:14 WG1963817 Methyl tert-butyl ether ND 0.00100 1 11/23/2022 13:14 WG1963817 tert-Butyl alcohol ND 0.00500 1 11/23/2022 13:14 WG1963817 tert-Amyl Methyl Ether ND 0.00100 1 11/23/2022 13:14 WG1963817 (S) Toluene-d8 104 75.0-131 11/23/2022 13:14 WG1963817 (S) 4-Bromofluorobenzene 100 67.0-138 11/23/2022 13:14 WG1963817 (S) 1,2-Dichloroethane-d4 89.4 70.0-130 11/23/2022 13:14 WG1963817 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 37 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 37 of 55 SAMPLE RESULTS - 29 L1556725 D6-2 Collected date/time: 11/10/22 10:52 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 20:21 WG1960281 (S) a,a,a-Trifluorotoluene(FID) 101 77.0-120 11/16/2022 20:21 WG1960281 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 17:17 WG1961306 Ethylbenzene ND 0.00100 1 11/17/2022 17:17 WG1961306 Toluene ND J4 0.00500 1 11/17/2022 17:17 WG1961306 Xylenes, Total ND 0.00300 1 11/17/2022 17:17 WG1961306 Di-isopropyl ether ND 0.00100 1 11/17/2022 17:17 WG1961306 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 17:17 WG1961306 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 17:17 WG1961306 tert-Butyl alcohol ND 0.00500 1 11/17/2022 17:17 WG1961306 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 17:17 WG1961306 (S) Toluene-d8 102 75.0-131 11/17/2022 17:17 WG1961306 (S) 4-Bromofluorobenzene 95.9 67.0-138 11/17/2022 17:17 WG1961306 (S) 1,2-Dichloroethane-d4 90.2 70.0-130 11/17/2022 17:17 WG1961306 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 38 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 38 of 55 SAMPLE RESULTS - 30 L1556725 D6-6 Collected date/time: 11/10/22 10:54 Volatile Organic Compounds (GC) by Method 8015 Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time TPHG C5 - C12 ND 0.100 1 11/16/2022 20:44 WG1960281 (S) a,a,a-Trifluorotoluene(FID) 101 77.0-120 11/16/2022 20:44 WG1960281 Volatile Organic Compounds (GC/MS) by Method 8260B Result Qualifier RDL Dilution Analysis Batch Analyte mg/kg mg/kg date / time Benzene ND 0.00100 1 11/17/2022 18:05 WG1961306 Ethylbenzene ND 0.00100 1 11/17/2022 18:05 WG1961306 Toluene ND J4 0.00500 1 11/17/2022 18:05 WG1961306 Xylenes, Total ND 0.00300 1 11/17/2022 18:05 WG1961306 Di-isopropyl ether ND 0.00100 1 11/17/2022 18:05 WG1961306 Ethyl tert-butyl ether ND 0.00100 1 11/17/2022 18:05 WG1961306 Methyl tert-butyl ether ND 0.00100 1 11/17/2022 18:05 WG1961306 tert-Butyl alcohol ND 0.00500 1 11/17/2022 18:05 WG1961306 tert-Amyl Methyl Ether ND 0.00100 1 11/17/2022 18:05 WG1961306 (S) Toluene-d8 102 75.0-131 11/17/2022 18:05 WG1961306 (S) 4-Bromofluorobenzene 94.9 67.0-138 11/17/2022 18:05 WG1961306 (S) 1,2-Dichloroethane-d4 88.9 70.0-130 11/17/2022 18:05 WG1961306 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 39 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 39 of 55 QUALITY CONTROL SUMMARYWG1959516 Volatile Organic Compounds (GC) by Method 8015 L1556725-01,02,03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18,19 Method Blank (MB) (MB) R3862357-2 11/16/22 11:55 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPHG C5 - C12 U 0.0332 0.100 (S) a,a,a-Trifluorotoluene(FID)97.5 77.0-120 Laboratory Control Sample (LCS) (LCS) R3862357-1 11/16/22 10:03 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPHG C5 - C12 5.50 4.51 82.0 72.0-125 (S) a,a,a-Trifluorotoluene(FID) 100 77.0-120 L1556725-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1556725-01 11/16/22 12:40 • (MS) R3862357-3 11/16/22 19:50 • (MSD) R3862357-4 11/16/22 20:13 Spike Amount Original Result MS Result MSD Result MS Rec. MSD Rec. Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg mg/kg %%%%% TPHG C5 - C12 5.50 ND 3.44 1.95 62.5 35.5 1 10.0-141 J3 55.3 29 (S) a,a,a-Trifluorotoluene(FID) 99.8 97.5 77.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 40 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 40 of 55 QUALITY CONTROL SUMMARYWG1960281 Volatile Organic Compounds (GC) by Method 8015 L1556725-20,21,22,23,24,25,26,27,28,29,30 Method Blank (MB) (MB) R3862242-2 11/16/22 13:30 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg TPHG C5 - C12 U 0.0332 0.100 (S) a,a,a-Trifluorotoluene(FID)101 77.0-120 Laboratory Control Sample (LCS) (LCS) R3862242-1 11/16/22 12:00 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% TPHG C5 - C12 5.50 5.90 107 72.0-125 (S) a,a,a-Trifluorotoluene(FID) 107 77.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 41 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 41 of 55 QUALITY CONTROL SUMMARYWG1960837 Volatile Organic Compounds (GC/MS) by Method 8260B L1556725-01,02,03,04,05 Method Blank (MB) (MB) R3862255-3 11/16/22 14:55 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000375 0.00100 Ethylbenzene U 0.000300 0.00100 Toluene U 0.00123 0.00500 Xylenes, Total U 0.000500 0.00300 Di-isopropyl ether U 0.000221 0.00100 Ethyl tert-butyl ether U 0.000250 0.00100 Methyl tert-butyl ether U 0.000350 0.00100 tert-Butyl alcohol 0.00328 J 0.00250 0.00500 tert-Amyl Methyl Ether U 0.000400 0.00100 (S) Toluene-d8 106 75.0-131 (S) 4-Bromofluorobenzene 95.6 67.0-138 (S) 1,2-Dichloroethane-d4 93.9 70.0-130 Laboratory Control Sample (LCS) (LCS) R3862255-1 11/16/22 13:50 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Benzene 0.0250 0.0239 95.6 70.0-123 Ethylbenzene 0.0250 0.0268 107 74.0-126 Toluene 0.0250 0.0246 98.4 75.0-121 Xylenes, Total 0.0750 0.0801 107 72.0-127 Di-isopropyl ether 0.0250 0.0246 98.4 60.0-136 Ethyl tert-butyl ether 0.0250 0.0226 90.4 68.0-140 Methyl tert-butyl ether 0.0250 0.0227 90.8 66.0-132 tert-Butyl alcohol 0.125 0.0755 60.4 15.0-160 tert-Amyl Methyl Ether 0.0250 0.0208 83.2 66.0-135 (S) Toluene-d8 98.8 75.0-131 (S) 4-Bromofluorobenzene 103 67.0-138 (S) 1,2-Dichloroethane-d4 98.0 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 42 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 42 of 55 QUALITY CONTROL SUMMARYWG1960846 Volatile Organic Compounds (GC/MS) by Method 8260B L1556725-06,07,08,09,10 Method Blank (MB) (MB) R3862276-3 11/16/22 15:30 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000375 0.00100 Ethylbenzene U 0.000300 0.00100 Toluene U 0.00123 0.00500 Xylenes, Total U 0.000500 0.00300 Di-isopropyl ether U 0.000221 0.00100 Ethyl tert-butyl ether U 0.000250 0.00100 Methyl tert-butyl ether U 0.000350 0.00100 tert-Butyl alcohol U 0.00250 0.00500 tert-Amyl Methyl Ether U 0.000400 0.00100 (S) Toluene-d8 112 75.0-131 (S) 4-Bromofluorobenzene 104 67.0-138 (S) 1,2-Dichloroethane-d4 88.4 70.0-130 Laboratory Control Sample (LCS) (LCS) R3862276-1 11/16/22 13:53 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Benzene 0.0250 0.0264 106 70.0-123 Ethylbenzene 0.0250 0.0311 124 74.0-126 Toluene 0.0250 0.0284 114 75.0-121 Xylenes, Total 0.0750 0.0958 128 72.0-127 J4 Di-isopropyl ether 0.0250 0.0313 125 60.0-136 Ethyl tert-butyl ether 0.0250 0.0281 112 68.0-140 Methyl tert-butyl ether 0.0250 0.0261 104 66.0-132 tert-Butyl alcohol 0.125 0.138 110 15.0-160 tert-Amyl Methyl Ether 0.0250 0.0279 112 66.0-135 (S) Toluene-d8 110 75.0-131 (S) 4-Bromofluorobenzene 109 67.0-138 (S) 1,2-Dichloroethane-d4 92.3 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 43 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 43 of 55 QUALITY CONTROL SUMMARYWG1961237 Volatile Organic Compounds (GC/MS) by Method 8260B L1556725-12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27 Method Blank (MB) (MB) R3864012-1 11/17/22 16:29 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000375 0.00100 Ethylbenzene U 0.000300 0.00100 Toluene U 0.00123 0.00500 Xylenes, Total U 0.000500 0.00300 Di-isopropyl ether U 0.000221 0.00100 Ethyl tert-butyl ether U 0.000250 0.00100 Methyl tert-butyl ether U 0.000350 0.00100 tert-Butyl alcohol U 0.00250 0.00500 tert-Amyl Methyl Ether U 0.000400 0.00100 (S) Toluene-d8 114 75.0-131 (S) 4-Bromofluorobenzene 103 67.0-138 (S) 1,2-Dichloroethane-d4 88.9 70.0-130 Laboratory Control Sample (LCS) (LCS) R3864012-2 11/17/22 18:40 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Benzene 0.0250 0.0251 100 70.0-123 Ethylbenzene 0.0250 0.0274 110 74.0-126 Toluene 0.0250 0.0265 106 75.0-121 Xylenes, Total 0.0750 0.0867 116 72.0-127 Di-isopropyl ether 0.0250 0.0286 114 60.0-136 Ethyl tert-butyl ether 0.0250 0.0241 96.4 68.0-140 Methyl tert-butyl ether 0.0250 0.0218 87.2 66.0-132 tert-Butyl alcohol 0.125 0.109 87.2 15.0-160 tert-Amyl Methyl Ether 0.0250 0.0235 94.0 66.0-135 (S) Toluene-d8 111 75.0-131 (S) 4-Bromofluorobenzene 109 67.0-138 (S) 1,2-Dichloroethane-d4 93.2 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 44 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 44 of 55 QUALITY CONTROL SUMMARYWG1961306 Volatile Organic Compounds (GC/MS) by Method 8260B L1556725-29,30 Method Blank (MB) (MB) R3862531-2 11/17/22 14:03 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000375 0.00100 Ethylbenzene U 0.000300 0.00100 Toluene U 0.00123 0.00500 Xylenes, Total U 0.000500 0.00300 Di-isopropyl ether U 0.000221 0.00100 Ethyl tert-butyl ether U 0.000250 0.00100 Methyl tert-butyl ether U 0.000350 0.00100 tert-Butyl alcohol U 0.00250 0.00500 tert-Amyl Methyl Ether U 0.000400 0.00100 (S) Toluene-d8 103 75.0-131 (S) 4-Bromofluorobenzene 94.2 67.0-138 (S) 1,2-Dichloroethane-d4 90.6 70.0-130 Laboratory Control Sample (LCS) (LCS) R3862531-3 11/17/22 14:25 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Benzene 0.0250 0.0190 76.0 70.0-123 Ethylbenzene 0.0250 0.0198 79.2 74.0-126 Toluene 0.0250 0.0183 73.2 75.0-121 J4 Xylenes, Total 0.0750 0.0593 79.1 72.0-127 Di-isopropyl ether 0.0250 0.0187 74.8 60.0-136 Ethyl tert-butyl ether 0.0250 0.0178 71.2 68.0-140 Methyl tert-butyl ether 0.0250 0.0196 78.4 66.0-132 tert-Butyl alcohol 0.125 0.0837 67.0 15.0-160 tert-Amyl Methyl Ether 0.0250 0.0173 69.2 66.0-135 (S) Toluene-d8 98.4 75.0-131 (S) 4-Bromofluorobenzene 101 67.0-138 (S) 1,2-Dichloroethane-d4 97.6 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 45 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 45 of 55 QUALITY CONTROL SUMMARYWG1961506 Volatile Organic Compounds (GC/MS) by Method 8260B L1556725-07,08 Method Blank (MB) (MB) R3863129-3 11/19/22 17:34 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Xylenes, Total U 0.000500 0.00300 (S) Toluene-d8 106 75.0-131 (S) 4-Bromofluorobenzene 101 67.0-138 (S) 1,2-Dichloroethane-d4 93.4 70.0-130 Laboratory Control Sample (LCS) (LCS) R3863129-1 11/19/22 16:29 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Xylenes, Total 0.0750 0.0666 88.8 72.0-127 (S) Toluene-d8 104 75.0-131 (S) 4-Bromofluorobenzene 99.8 67.0-138 (S) 1,2-Dichloroethane-d4 92.7 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 46 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 46 of 55 QUALITY CONTROL SUMMARYWG1962997 Volatile Organic Compounds (GC/MS) by Method 8260B L1556725-09 Method Blank (MB) (MB) R3864289-3 11/22/22 18:11 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Xylenes, Total U 0.000500 0.00300 (S) Toluene-d8 114 75.0-131 (S) 4-Bromofluorobenzene 102 67.0-138 (S) 1,2-Dichloroethane-d4 86.0 70.0-130 Laboratory Control Sample (LCS) (LCS) R3864289-1 11/22/22 16:24 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Xylenes, Total 0.0750 0.0809 108 72.0-127 (S) Toluene-d8 108 75.0-131 (S) 4-Bromofluorobenzene 107 67.0-138 (S) 1,2-Dichloroethane-d4 90.6 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 47 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 47 of 55 QUALITY CONTROL SUMMARYWG1963817 Volatile Organic Compounds (GC/MS) by Method 8260B L1556725-28 Method Blank (MB) (MB) R3865001-4 11/23/22 12:46 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000375 0.00100 Ethylbenzene U 0.000300 0.00100 Toluene U 0.00123 0.00500 Xylenes, Total U 0.000500 0.00300 Di-isopropyl ether U 0.000221 0.00100 Ethyl tert-butyl ether U 0.000250 0.00100 Methyl tert-butyl ether U 0.000350 0.00100 tert-Butyl alcohol 0.00478 J 0.00250 0.00500 tert-Amyl Methyl Ether U 0.000400 0.00100 (S) Toluene-d8 106 75.0-131 (S) 4-Bromofluorobenzene 98.8 67.0-138 (S) 1,2-Dichloroethane-d4 90.4 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3865001-1 11/23/22 11:18 • (LCSD) R3865001-2 11/23/22 11:40 Spike Amount LCS Result LCSD Result LCS Rec. LCSD Rec. Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte mg/kg mg/kg mg/kg %%%%% Benzene 0.0250 0.0241 0.0247 96.4 98.8 70.0-123 2.46 20 Ethylbenzene 0.0250 0.0266 0.0277 106 111 74.0-126 4.05 20 Toluene 0.0250 0.0259 0.0267 104 107 75.0-121 3.04 20 Xylenes, Total 0.0750 0.0798 0.0823 106 110 72.0-127 3.08 20 Di-isopropyl ether 0.0250 0.0242 0.0255 96.8 102 60.0-136 5.23 20 Ethyl tert-butyl ether 0.0250 0.0243 0.0254 97.2 102 68.0-140 4.43 20 Methyl tert-butyl ether 0.0250 0.0236 0.0253 94.4 101 66.0-132 6.95 20 tert-Butyl alcohol 0.125 0.0948 0.113 75.8 90.4 15.0-160 17.5 33 tert-Amyl Methyl Ether 0.0250 0.0249 0.0270 99.6 108 66.0-135 8.09 20 (S) Toluene-d8 106 106 75.0-131 (S) 4-Bromofluorobenzene 101 104 67.0-138 (S) 1,2-Dichloroethane-d4 90.2 88.3 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 48 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 48 of 55 QUALITY CONTROL SUMMARYWG1964463 Volatile Organic Compounds (GC/MS) by Method 8260B L1556725-11 Method Blank (MB) (MB) R3865156-4 11/25/22 15:50 MB Result MB Qualifier MB MDL MB RDL Analyte mg/kg mg/kg mg/kg Benzene U 0.000375 0.00100 Ethylbenzene U 0.000300 0.00100 Toluene U 0.00123 0.00500 Xylenes, Total U 0.000500 0.00300 Di-isopropyl ether U 0.000221 0.00100 Ethyl tert-butyl ether U 0.000250 0.00100 Methyl tert-butyl ether U 0.000350 0.00100 tert-Butyl alcohol U 0.00250 0.00500 tert-Amyl Methyl Ether U 0.000400 0.00100 (S) Toluene-d8 113 75.0-131 (S) 4-Bromofluorobenzene 102 67.0-138 (S) 1,2-Dichloroethane-d4 95.4 70.0-130 Laboratory Control Sample (LCS) (LCS) R3865156-1 11/25/22 14:13 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte mg/kg mg/kg %% Benzene 0.0250 0.0267 107 70.0-123 Ethylbenzene 0.0250 0.0280 112 74.0-126 Toluene 0.0250 0.0267 107 75.0-121 Xylenes, Total 0.0750 0.0868 116 72.0-127 Di-isopropyl ether 0.0250 0.0313 125 60.0-136 Ethyl tert-butyl ether 0.0250 0.0294 118 68.0-140 Methyl tert-butyl ether 0.0250 0.0232 92.8 66.0-132 tert-Butyl alcohol 0.125 0.131 105 15.0-160 tert-Amyl Methyl Ether 0.0250 0.0259 104 66.0-135 (S) Toluene-d8 105 75.0-131 (S) 4-Bromofluorobenzene 103 67.0-138 (S) 1,2-Dichloroethane-d4 97.5 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 49 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 49 of 55 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. ND Not detected at the Reporting Limit (or MDL where applicable). RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S) Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description B The same analyte is found in the associated blank. J The identification of the analyte is acceptable; the reported value is an estimate. J3 The associated batch QC was outside the established quality control range for precision. J4 The associated batch QC was outside the established quality control range for accuracy. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 50 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 50 of 55 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:25 51 of 55 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: 711 Stantec - San Diego, CA 185851117.1201.0400 L1556725 11/28/22 17:40 51 of 55