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Home My WebLink AboutWS-5622_19825_CA_HRE_20230714_WSWRequestsDivision of Waste Management UST Section MEMORANDUM To: From: Date: Dave Lilley Linda Blalock July14, 2023 Subject: Health Risk Evaluation Request Related to FTF Incident #19825/Ruby's Mini Mart Yanceyville/Caswell County Please perform a Health Risk Evaluation for the following water supply well samples. Dave, I know there's MTBE in WSW-6, but in addition, while not actually detected, there's a qualifier note about Acrolein on all three of the results and I didn't know what to do about that. Recent lab report is attached (results begin on page 14 of 39). Addresses are well locations: WSW-6 – 9102 NC Highway 62 Owner: Loftin Scott Aldridge, Jr. 9102 NC Hwy 62S Yanceyville, NC 27379 P#082 - 9182 NC Hwy 62S Owner: John Lefate Rudd 9182 NC Hwy 62S Yanceyville, NC 27379 P#072 - 9138 NC Hwy 62S Owner: David and Arlene Apple 9138 NC Hwy 62S Yanceyville, NC 27379 Thank you for your assistance. If you need any additional information, please feel free to email me linda.blalock@deq.nc.gov . Attachment ANALYTICAL REPORT July 12, 2023 Revised Report ATC Group Services LLC Sample Delivery Group:L1630546 Samples Received:06/28/2023 Project Number: Description:Ruby's Mini Mart Report To:Nicholas Kramer 2725 E. Millbrook Road, Ste 121 Raleigh, NC 27604 Entire Report Reviewed By: July 12, 2023 [Preliminary Report] Heather J Wagner 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: ATC Group Services LLC L1630546 07/12/23 08:39 1 of 39 July 12, 2023 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 1 of 39 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 MW-1 L1630546-01 6 MW-2 L1630546-02 8 MW-3 L1630546-03 10 MW-4 L1630546-04 12 WSW-6 L1630546-05 14 P#072 L1630546-06 16 P#082 L1630546-07 18 FB-1 L1630546-08 20 Qc: Quality Control Summary 22 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 22 Gl: Glossary of Terms 37 Al: Accreditations & Locations 38 Sc: Sample Chain of Custody 39 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 2 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 2 of 39 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-1 L1630546-01 GW NK 06/26/23 11:20 06/28/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2089372 10 07/05/23 18:52 07/05/23 18:52 JHH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2091060 10 07/08/23 02:10 07/08/23 02:10 DYW Mt. Juliet, TN Collected by Collected date/time Received date/time MW-2 L1630546-02 GW NK 06/26/23 11:05 06/28/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2089372 1 07/05/23 16:39 07/05/23 16:39 JHH Mt. Juliet, TN Collected by Collected date/time Received date/time MW-3 L1630546-03 GW NK 06/26/23 10:35 06/28/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2090274 1 07/06/23 18:29 07/06/23 18:29 BAM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-4 L1630546-04 GW NK 06/26/23 10:10 06/28/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2089450 1 07/06/23 06:41 07/06/23 06:41 JBE Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2090274 1 07/06/23 18:50 07/06/23 18:50 BAM Mt. Juliet, TN Collected by Collected date/time Received date/time WSW-6 L1630546-05 GW NK 06/26/23 12:00 06/28/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2089450 1 07/06/23 07:03 07/06/23 07:03 JBE Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2090274 1 07/06/23 19:12 07/06/23 19:12 BAM Mt. Juliet, TN Collected by Collected date/time Received date/time P#072 L1630546-06 GW NK 06/26/23 10:45 06/28/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2089450 1 07/06/23 07:25 07/06/23 07:25 JBE Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2090274 1 07/06/23 19:34 07/06/23 19:34 BAM Mt. Juliet, TN Collected by Collected date/time Received date/time P#082 L1630546-07 GW NK 06/26/23 12:20 06/28/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2089450 1 07/06/23 07:47 07/06/23 07:47 JBE Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2090274 1 07/06/23 19:56 07/06/23 19:56 BAM Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 3 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 3 of 39 SAMPLE SUMMARY Collected by Collected date/time Received date/time FB-1 L1630546-08 GW NK 06/26/23 12:30 06/28/23 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2089450 1 07/06/23 01:35 07/06/23 01:35 BAM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2090274 1 07/06/23 20:17 07/06/23 20:17 BAM Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 4 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 4 of 39 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] Heather J Wagner Project Manager Report Revision History Level II Report - Version 1: 07/10/23 18:03 Project Narrative Revised Report: Revised to correct sample ID P#072 (L1630546-06) and P#082 (L1630546-07) per client request. This report replaces the report issued 7/10/2023. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 5 of 39 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 5 of 39 SAMPLE RESULTS - 01 L1630546 MW-1 Collected date/time: 06/26/23 11:20 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 113 500 10 07/05/2023 18:52 WG2089372 Acrolein U 25.4 500 10 07/05/2023 18:52 WG2089372 Acrylonitrile U 6.71 100 10 07/05/2023 18:52 WG2089372 Benzene 14.0 0.941 10.0 10 07/08/2023 02:10 WG2091060 Bromobenzene U 1.18 10.0 10 07/05/2023 18:52 WG2089372 Bromodichloromethane U 1.36 10.0 10 07/05/2023 18:52 WG2089372 Bromoform U 1.29 10.0 10 07/05/2023 18:52 WG2089372 Bromomethane U J4 6.05 50.0 10 07/05/2023 18:52 WG2089372 n-Butylbenzene 9.69 J 1.57 10.0 10 07/05/2023 18:52 WG2089372 sec-Butylbenzene 16.2 1.25 10.0 10 07/05/2023 18:52 WG2089372 tert-Butylbenzene U 1.27 10.0 10 07/05/2023 18:52 WG2089372 Carbon tetrachloride U 1.28 10.0 10 07/05/2023 18:52 WG2089372 Chlorobenzene U 1.16 10.0 10 07/05/2023 18:52 WG2089372 Chlorodibromomethane U 1.40 10.0 10 07/05/2023 18:52 WG2089372 Chloroethane U 1.92 50.0 10 07/05/2023 18:52 WG2089372 Chloroform U 1.11 50.0 10 07/05/2023 18:52 WG2089372 Chloromethane U 9.60 25.0 10 07/05/2023 18:52 WG2089372 2-Chlorotoluene U 1.06 10.0 10 07/05/2023 18:52 WG2089372 4-Chlorotoluene U 1.14 10.0 10 07/05/2023 18:52 WG2089372 1,2-Dibromo-3-Chloropropane U 2.76 50.0 10 07/05/2023 18:52 WG2089372 1,2-Dibromoethane U 1.26 10.0 10 07/05/2023 18:52 WG2089372 Dibromomethane U 1.22 10.0 10 07/05/2023 18:52 WG2089372 1,2-Dichlorobenzene U 1.07 10.0 10 07/05/2023 18:52 WG2089372 1,3-Dichlorobenzene U 1.10 10.0 10 07/05/2023 18:52 WG2089372 1,4-Dichlorobenzene U 1.20 10.0 10 07/05/2023 18:52 WG2089372 Dichlorodifluoromethane U 3.74 50.0 10 07/05/2023 18:52 WG2089372 1,1-Dichloroethane U 1.00 10.0 10 07/05/2023 18:52 WG2089372 1,2-Dichloroethane 2.41 J 0.819 10.0 10 07/05/2023 18:52 WG2089372 1,1-Dichloroethene U 1.88 10.0 10 07/05/2023 18:52 WG2089372 cis-1,2-Dichloroethene U 1.26 10.0 10 07/05/2023 18:52 WG2089372 trans-1,2-Dichloroethene U 1.49 10.0 10 07/05/2023 18:52 WG2089372 1,2-Dichloropropane U 1.49 10.0 10 07/05/2023 18:52 WG2089372 1,1-Dichloropropene U 1.42 10.0 10 07/05/2023 18:52 WG2089372 1,3-Dichloropropane U 1.10 10.0 10 07/05/2023 18:52 WG2089372 2,2-Dichloropropane U 1.61 10.0 10 07/05/2023 18:52 WG2089372 Di-isopropyl ether U 1.05 10.0 10 07/05/2023 18:52 WG2089372 Ethylbenzene 75.4 1.37 10.0 10 07/05/2023 18:52 WG2089372 Hexachloro-1,3-butadiene U 3.37 10.0 10 07/05/2023 18:52 WG2089372 Isopropylbenzene 6.40 J 1.05 10.0 10 07/05/2023 18:52 WG2089372 p-Isopropyltoluene 2.50 J 1.20 10.0 10 07/05/2023 18:52 WG2089372 2-Butanone (MEK)U 11.9 100 10 07/05/2023 18:52 WG2089372 Methylene Chloride U 4.30 50.0 10 07/05/2023 18:52 WG2089372 4-Methyl-2-pentanone (MIBK)U 4.78 100 10 07/05/2023 18:52 WG2089372 Methyl tert-butyl ether 1.35 J 1.01 10.0 10 07/05/2023 18:52 WG2089372 Naphthalene 31.3 J 10.0 50.0 10 07/05/2023 18:52 WG2089372 n-Propylbenzene 14.0 0.993 10.0 10 07/05/2023 18:52 WG2089372 Styrene U 1.18 10.0 10 07/05/2023 18:52 WG2089372 1,1,1,2-Tetrachloroethane U 1.47 10.0 10 07/05/2023 18:52 WG2089372 1,1,2,2-Tetrachloroethane U 1.33 10.0 10 07/05/2023 18:52 WG2089372 Tetrachloroethene U 3.00 10.0 10 07/05/2023 18:52 WG2089372 Toluene 22.4 2.78 10.0 10 07/05/2023 18:52 WG2089372 1,2,3-Trichlorobenzene U 2.30 10.0 10 07/05/2023 18:52 WG2089372 1,2,4-Trichlorobenzene U 4.81 10.0 10 07/05/2023 18:52 WG2089372 1,1,1-Trichloroethane U 1.49 10.0 10 07/05/2023 18:52 WG2089372 1,1,2-Trichloroethane U 1.58 10.0 10 07/05/2023 18:52 WG2089372 Trichloroethene U J4 1.90 10.0 10 07/05/2023 18:52 WG2089372 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 6 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 6 of 39 SAMPLE RESULTS - 01 L1630546 MW-1 Collected date/time: 06/26/23 11:20 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 1.60 50.0 10 07/05/2023 18:52 WG2089372 1,2,3-Trichloropropane U 2.37 25.0 10 07/05/2023 18:52 WG2089372 1,2,4-Trimethylbenzene 7.30 J 3.22 10.0 10 07/05/2023 18:52 WG2089372 1,3,5-Trimethylbenzene 12.6 1.04 10.0 10 07/05/2023 18:52 WG2089372 Vinyl chloride U 2.34 10.0 10 07/05/2023 18:52 WG2089372 o-Xylene 36.6 1.74 10.0 10 07/05/2023 18:52 WG2089372 m&p-Xylenes 45.4 4.30 20.0 10 07/05/2023 18:52 WG2089372 (S) Toluene-d8 105 80.0-120 07/05/2023 18:52 WG2089372 (S) Toluene-d8 111 80.0-120 07/08/2023 02:10 WG2091060 (S) 4-Bromofluorobenzene 96.9 77.0-126 07/05/2023 18:52 WG2089372 (S) 4-Bromofluorobenzene 108 77.0-126 07/08/2023 02:10 WG2091060 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/05/2023 18:52 WG2089372 (S) 1,2-Dichloroethane-d4 103 70.0-130 07/08/2023 02:10 WG2091060 Sample Narrative: L1630546-01 WG2089372: Target and Non-target compounds too high to run at a lower dilution. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 7 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 7 of 39 SAMPLE RESULTS - 02 L1630546 MW-2 Collected date/time: 06/26/23 11:05 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/05/2023 16:39 WG2089372 Acrolein U 2.54 50.0 1 07/05/2023 16:39 WG2089372 Acrylonitrile U 0.671 10.0 1 07/05/2023 16:39 WG2089372 Benzene U 0.0941 1.00 1 07/05/2023 16:39 WG2089372 Bromobenzene U 0.118 1.00 1 07/05/2023 16:39 WG2089372 Bromodichloromethane U 0.136 1.00 1 07/05/2023 16:39 WG2089372 Bromoform U 0.129 1.00 1 07/05/2023 16:39 WG2089372 Bromomethane U J4 0.605 5.00 1 07/05/2023 16:39 WG2089372 n-Butylbenzene U 0.157 1.00 1 07/05/2023 16:39 WG2089372 sec-Butylbenzene U 0.125 1.00 1 07/05/2023 16:39 WG2089372 tert-Butylbenzene U 0.127 1.00 1 07/05/2023 16:39 WG2089372 Carbon tetrachloride U 0.128 1.00 1 07/05/2023 16:39 WG2089372 Chlorobenzene U 0.116 1.00 1 07/05/2023 16:39 WG2089372 Chlorodibromomethane U 0.140 1.00 1 07/05/2023 16:39 WG2089372 Chloroethane U 0.192 5.00 1 07/05/2023 16:39 WG2089372 Chloroform U 0.111 5.00 1 07/05/2023 16:39 WG2089372 Chloromethane U 0.960 2.50 1 07/05/2023 16:39 WG2089372 2-Chlorotoluene U 0.106 1.00 1 07/05/2023 16:39 WG2089372 4-Chlorotoluene U 0.114 1.00 1 07/05/2023 16:39 WG2089372 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/05/2023 16:39 WG2089372 1,2-Dibromoethane U 0.126 1.00 1 07/05/2023 16:39 WG2089372 Dibromomethane U 0.122 1.00 1 07/05/2023 16:39 WG2089372 1,2-Dichlorobenzene U 0.107 1.00 1 07/05/2023 16:39 WG2089372 1,3-Dichlorobenzene U 0.110 1.00 1 07/05/2023 16:39 WG2089372 1,4-Dichlorobenzene U 0.120 1.00 1 07/05/2023 16:39 WG2089372 Dichlorodifluoromethane U 0.374 5.00 1 07/05/2023 16:39 WG2089372 1,1-Dichloroethane U 0.100 1.00 1 07/05/2023 16:39 WG2089372 1,2-Dichloroethane U 0.0819 1.00 1 07/05/2023 16:39 WG2089372 1,1-Dichloroethene U 0.188 1.00 1 07/05/2023 16:39 WG2089372 cis-1,2-Dichloroethene U 0.126 1.00 1 07/05/2023 16:39 WG2089372 trans-1,2-Dichloroethene U 0.149 1.00 1 07/05/2023 16:39 WG2089372 1,2-Dichloropropane U 0.149 1.00 1 07/05/2023 16:39 WG2089372 1,1-Dichloropropene U 0.142 1.00 1 07/05/2023 16:39 WG2089372 1,3-Dichloropropane U 0.110 1.00 1 07/05/2023 16:39 WG2089372 2,2-Dichloropropane U 0.161 1.00 1 07/05/2023 16:39 WG2089372 Di-isopropyl ether U 0.105 1.00 1 07/05/2023 16:39 WG2089372 Ethylbenzene U 0.137 1.00 1 07/05/2023 16:39 WG2089372 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/05/2023 16:39 WG2089372 Isopropylbenzene U 0.105 1.00 1 07/05/2023 16:39 WG2089372 p-Isopropyltoluene U 0.120 1.00 1 07/05/2023 16:39 WG2089372 2-Butanone (MEK)U 1.19 10.0 1 07/05/2023 16:39 WG2089372 Methylene Chloride U 0.430 5.00 1 07/05/2023 16:39 WG2089372 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/05/2023 16:39 WG2089372 Methyl tert-butyl ether U 0.101 1.00 1 07/05/2023 16:39 WG2089372 Naphthalene U 1.00 5.00 1 07/05/2023 16:39 WG2089372 n-Propylbenzene U 0.0993 1.00 1 07/05/2023 16:39 WG2089372 Styrene U 0.118 1.00 1 07/05/2023 16:39 WG2089372 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/05/2023 16:39 WG2089372 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/05/2023 16:39 WG2089372 Tetrachloroethene 0.308 J 0.300 1.00 1 07/05/2023 16:39 WG2089372 Toluene U 0.278 1.00 1 07/05/2023 16:39 WG2089372 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/05/2023 16:39 WG2089372 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/05/2023 16:39 WG2089372 1,1,1-Trichloroethane U 0.149 1.00 1 07/05/2023 16:39 WG2089372 1,1,2-Trichloroethane U 0.158 1.00 1 07/05/2023 16:39 WG2089372 Trichloroethene U J4 0.190 1.00 1 07/05/2023 16:39 WG2089372 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 8 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 8 of 39 SAMPLE RESULTS - 02 L1630546 MW-2 Collected date/time: 06/26/23 11:05 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/05/2023 16:39 WG2089372 1,2,3-Trichloropropane U 0.237 2.50 1 07/05/2023 16:39 WG2089372 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/05/2023 16:39 WG2089372 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/05/2023 16:39 WG2089372 Vinyl chloride U 0.234 1.00 1 07/05/2023 16:39 WG2089372 o-Xylene U 0.174 1.00 1 07/05/2023 16:39 WG2089372 m&p-Xylenes U 0.430 2.00 1 07/05/2023 16:39 WG2089372 (S) Toluene-d8 106 80.0-120 07/05/2023 16:39 WG2089372 (S) 4-Bromofluorobenzene 95.0 77.0-126 07/05/2023 16:39 WG2089372 (S) 1,2-Dichloroethane-d4 114 70.0-130 07/05/2023 16:39 WG2089372 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 9 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 9 of 39 SAMPLE RESULTS - 03 L1630546 MW-3 Collected date/time: 06/26/23 10:35 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/06/2023 18:29 WG2090274 Acrolein U 2.54 50.0 1 07/06/2023 18:29 WG2090274 Acrylonitrile U 0.671 10.0 1 07/06/2023 18:29 WG2090274 Benzene U 0.0941 1.00 1 07/06/2023 18:29 WG2090274 Bromobenzene U 0.118 1.00 1 07/06/2023 18:29 WG2090274 Bromodichloromethane U 0.136 1.00 1 07/06/2023 18:29 WG2090274 Bromoform U 0.129 1.00 1 07/06/2023 18:29 WG2090274 Bromomethane U 0.605 5.00 1 07/06/2023 18:29 WG2090274 n-Butylbenzene U 0.157 1.00 1 07/06/2023 18:29 WG2090274 sec-Butylbenzene U 0.125 1.00 1 07/06/2023 18:29 WG2090274 tert-Butylbenzene U 0.127 1.00 1 07/06/2023 18:29 WG2090274 Carbon tetrachloride U 0.128 1.00 1 07/06/2023 18:29 WG2090274 Chlorobenzene U 0.116 1.00 1 07/06/2023 18:29 WG2090274 Chlorodibromomethane U 0.140 1.00 1 07/06/2023 18:29 WG2090274 Chloroethane U 0.192 5.00 1 07/06/2023 18:29 WG2090274 Chloroform U 0.111 5.00 1 07/06/2023 18:29 WG2090274 Chloromethane U 0.960 2.50 1 07/06/2023 18:29 WG2090274 2-Chlorotoluene U 0.106 1.00 1 07/06/2023 18:29 WG2090274 4-Chlorotoluene U 0.114 1.00 1 07/06/2023 18:29 WG2090274 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/06/2023 18:29 WG2090274 1,2-Dibromoethane U 0.126 1.00 1 07/06/2023 18:29 WG2090274 Dibromomethane U 0.122 1.00 1 07/06/2023 18:29 WG2090274 1,2-Dichlorobenzene U 0.107 1.00 1 07/06/2023 18:29 WG2090274 1,3-Dichlorobenzene U 0.110 1.00 1 07/06/2023 18:29 WG2090274 1,4-Dichlorobenzene U J3 0.120 1.00 1 07/06/2023 18:29 WG2090274 Dichlorodifluoromethane U 0.374 5.00 1 07/06/2023 18:29 WG2090274 1,1-Dichloroethane U 0.100 1.00 1 07/06/2023 18:29 WG2090274 1,2-Dichloroethane U 0.0819 1.00 1 07/06/2023 18:29 WG2090274 1,1-Dichloroethene U 0.188 1.00 1 07/06/2023 18:29 WG2090274 cis-1,2-Dichloroethene U 0.126 1.00 1 07/06/2023 18:29 WG2090274 trans-1,2-Dichloroethene U 0.149 1.00 1 07/06/2023 18:29 WG2090274 1,2-Dichloropropane U 0.149 1.00 1 07/06/2023 18:29 WG2090274 1,1-Dichloropropene U 0.142 1.00 1 07/06/2023 18:29 WG2090274 1,3-Dichloropropane U 0.110 1.00 1 07/06/2023 18:29 WG2090274 2,2-Dichloropropane U 0.161 1.00 1 07/06/2023 18:29 WG2090274 Di-isopropyl ether U 0.105 1.00 1 07/06/2023 18:29 WG2090274 Ethylbenzene U 0.137 1.00 1 07/06/2023 18:29 WG2090274 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/06/2023 18:29 WG2090274 Isopropylbenzene U 0.105 1.00 1 07/06/2023 18:29 WG2090274 p-Isopropyltoluene U 0.120 1.00 1 07/06/2023 18:29 WG2090274 2-Butanone (MEK)U 1.19 10.0 1 07/06/2023 18:29 WG2090274 Methylene Chloride U 0.430 5.00 1 07/06/2023 18:29 WG2090274 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/06/2023 18:29 WG2090274 Methyl tert-butyl ether U 0.101 1.00 1 07/06/2023 18:29 WG2090274 Naphthalene U 1.00 5.00 1 07/06/2023 18:29 WG2090274 n-Propylbenzene U 0.0993 1.00 1 07/06/2023 18:29 WG2090274 Styrene U 0.118 1.00 1 07/06/2023 18:29 WG2090274 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/06/2023 18:29 WG2090274 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/06/2023 18:29 WG2090274 Tetrachloroethene U 0.300 1.00 1 07/06/2023 18:29 WG2090274 Toluene U 0.278 1.00 1 07/06/2023 18:29 WG2090274 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/06/2023 18:29 WG2090274 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/06/2023 18:29 WG2090274 1,1,1-Trichloroethane U 0.149 1.00 1 07/06/2023 18:29 WG2090274 1,1,2-Trichloroethane U 0.158 1.00 1 07/06/2023 18:29 WG2090274 Trichloroethene U 0.190 1.00 1 07/06/2023 18:29 WG2090274 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 10 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 10 of 39 SAMPLE RESULTS - 03 L1630546 MW-3 Collected date/time: 06/26/23 10:35 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U J3 0.160 5.00 1 07/06/2023 18:29 WG2090274 1,2,3-Trichloropropane U 0.237 2.50 1 07/06/2023 18:29 WG2090274 1,2,4-Trimethylbenzene U J3 0.322 1.00 1 07/06/2023 18:29 WG2090274 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/06/2023 18:29 WG2090274 Vinyl chloride U 0.234 1.00 1 07/06/2023 18:29 WG2090274 o-Xylene U 0.174 1.00 1 07/06/2023 18:29 WG2090274 m&p-Xylenes U 0.430 2.00 1 07/06/2023 18:29 WG2090274 (S) Toluene-d8 113 80.0-120 07/06/2023 18:29 WG2090274 (S) 4-Bromofluorobenzene 109 77.0-126 07/06/2023 18:29 WG2090274 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/06/2023 18:29 WG2090274 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 11 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 11 of 39 SAMPLE RESULTS - 04 L1630546 MW-4 Collected date/time: 06/26/23 10:10 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/06/2023 06:41 WG2089450 Acrolein U J3 2.54 50.0 1 07/06/2023 06:41 WG2089450 Acrylonitrile U 0.671 10.0 1 07/06/2023 06:41 WG2089450 Benzene U 0.0941 1.00 1 07/06/2023 06:41 WG2089450 Bromobenzene U 0.118 1.00 1 07/06/2023 06:41 WG2089450 Bromodichloromethane U 0.136 1.00 1 07/06/2023 06:41 WG2089450 Bromoform U 0.129 1.00 1 07/06/2023 06:41 WG2089450 Bromomethane U 0.605 5.00 1 07/06/2023 06:41 WG2089450 n-Butylbenzene U 0.157 1.00 1 07/06/2023 06:41 WG2089450 sec-Butylbenzene U 0.125 1.00 1 07/06/2023 06:41 WG2089450 tert-Butylbenzene U 0.127 1.00 1 07/06/2023 06:41 WG2089450 Carbon tetrachloride U 0.128 1.00 1 07/06/2023 06:41 WG2089450 Chlorobenzene U 0.116 1.00 1 07/06/2023 06:41 WG2089450 Chlorodibromomethane U 0.140 1.00 1 07/06/2023 06:41 WG2089450 Chloroethane U 0.192 5.00 1 07/06/2023 06:41 WG2089450 Chloroform U 0.111 5.00 1 07/06/2023 06:41 WG2089450 Chloromethane U 0.960 2.50 1 07/06/2023 06:41 WG2089450 2-Chlorotoluene U 0.106 1.00 1 07/06/2023 06:41 WG2089450 4-Chlorotoluene U 0.114 1.00 1 07/06/2023 06:41 WG2089450 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/06/2023 18:50 WG2090274 1,2-Dibromoethane U 0.126 1.00 1 07/06/2023 06:41 WG2089450 Dibromomethane U 0.122 1.00 1 07/06/2023 06:41 WG2089450 1,2-Dichlorobenzene U 0.107 1.00 1 07/06/2023 06:41 WG2089450 1,3-Dichlorobenzene U 0.110 1.00 1 07/06/2023 06:41 WG2089450 1,4-Dichlorobenzene U 0.120 1.00 1 07/06/2023 06:41 WG2089450 Dichlorodifluoromethane U 0.374 5.00 1 07/06/2023 06:41 WG2089450 1,1-Dichloroethane U 0.100 1.00 1 07/06/2023 06:41 WG2089450 1,2-Dichloroethane U 0.0819 1.00 1 07/06/2023 06:41 WG2089450 1,1-Dichloroethene U 0.188 1.00 1 07/06/2023 06:41 WG2089450 cis-1,2-Dichloroethene U 0.126 1.00 1 07/06/2023 18:50 WG2090274 trans-1,2-Dichloroethene U 0.149 1.00 1 07/06/2023 06:41 WG2089450 1,2-Dichloropropane U 0.149 1.00 1 07/06/2023 06:41 WG2089450 1,1-Dichloropropene U 0.142 1.00 1 07/06/2023 06:41 WG2089450 1,3-Dichloropropane U 0.110 1.00 1 07/06/2023 06:41 WG2089450 2,2-Dichloropropane U 0.161 1.00 1 07/06/2023 06:41 WG2089450 Di-isopropyl ether U 0.105 1.00 1 07/06/2023 06:41 WG2089450 Ethylbenzene U 0.137 1.00 1 07/06/2023 06:41 WG2089450 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/06/2023 06:41 WG2089450 Isopropylbenzene U 0.105 1.00 1 07/06/2023 06:41 WG2089450 p-Isopropyltoluene U 0.120 1.00 1 07/06/2023 06:41 WG2089450 2-Butanone (MEK)U 1.19 10.0 1 07/06/2023 06:41 WG2089450 Methylene Chloride U 0.430 5.00 1 07/06/2023 06:41 WG2089450 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/06/2023 06:41 WG2089450 Methyl tert-butyl ether U 0.101 1.00 1 07/06/2023 06:41 WG2089450 Naphthalene U 1.00 5.00 1 07/06/2023 06:41 WG2089450 n-Propylbenzene U 0.0993 1.00 1 07/06/2023 06:41 WG2089450 Styrene U 0.118 1.00 1 07/06/2023 06:41 WG2089450 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/06/2023 06:41 WG2089450 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/06/2023 06:41 WG2089450 Tetrachloroethene U 0.300 1.00 1 07/06/2023 06:41 WG2089450 Toluene U 0.278 1.00 1 07/06/2023 06:41 WG2089450 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/06/2023 06:41 WG2089450 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/06/2023 06:41 WG2089450 1,1,1-Trichloroethane U 0.149 1.00 1 07/06/2023 06:41 WG2089450 1,1,2-Trichloroethane U 0.158 1.00 1 07/06/2023 06:41 WG2089450 Trichloroethene U 0.190 1.00 1 07/06/2023 06:41 WG2089450 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 12 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 12 of 39 SAMPLE RESULTS - 04 L1630546 MW-4 Collected date/time: 06/26/23 10:10 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/06/2023 06:41 WG2089450 1,2,3-Trichloropropane U 0.237 2.50 1 07/06/2023 06:41 WG2089450 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/06/2023 06:41 WG2089450 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/06/2023 06:41 WG2089450 Vinyl chloride U 0.234 1.00 1 07/06/2023 06:41 WG2089450 o-Xylene U 0.174 1.00 1 07/06/2023 06:41 WG2089450 m&p-Xylenes U 0.430 2.00 1 07/06/2023 06:41 WG2089450 (S) Toluene-d8 109 80.0-120 07/06/2023 06:41 WG2089450 (S) Toluene-d8 112 80.0-120 07/06/2023 18:50 WG2090274 (S) 4-Bromofluorobenzene 95.3 77.0-126 07/06/2023 06:41 WG2089450 (S) 4-Bromofluorobenzene 108 77.0-126 07/06/2023 18:50 WG2090274 (S) 1,2-Dichloroethane-d4 108 70.0-130 07/06/2023 06:41 WG2089450 (S) 1,2-Dichloroethane-d4 108 70.0-130 07/06/2023 18:50 WG2090274 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 13 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 13 of 39 SAMPLE RESULTS - 05 L1630546 WSW-6 Collected date/time: 06/26/23 12:00 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/06/2023 07:03 WG2089450 Acrolein U J3 2.54 50.0 1 07/06/2023 07:03 WG2089450 Acrylonitrile U 0.671 10.0 1 07/06/2023 07:03 WG2089450 Benzene U 0.0941 1.00 1 07/06/2023 07:03 WG2089450 Bromobenzene U 0.118 1.00 1 07/06/2023 07:03 WG2089450 Bromodichloromethane U 0.136 1.00 1 07/06/2023 07:03 WG2089450 Bromoform U 0.129 1.00 1 07/06/2023 07:03 WG2089450 Bromomethane U 0.605 5.00 1 07/06/2023 07:03 WG2089450 n-Butylbenzene U 0.157 1.00 1 07/06/2023 07:03 WG2089450 sec-Butylbenzene U 0.125 1.00 1 07/06/2023 07:03 WG2089450 tert-Butylbenzene U 0.127 1.00 1 07/06/2023 07:03 WG2089450 Carbon tetrachloride U 0.128 1.00 1 07/06/2023 07:03 WG2089450 Chlorobenzene U 0.116 1.00 1 07/06/2023 07:03 WG2089450 Chlorodibromomethane U 0.140 1.00 1 07/06/2023 07:03 WG2089450 Chloroethane U 0.192 5.00 1 07/06/2023 07:03 WG2089450 Chloroform U 0.111 5.00 1 07/06/2023 07:03 WG2089450 Chloromethane U 0.960 2.50 1 07/06/2023 07:03 WG2089450 2-Chlorotoluene U 0.106 1.00 1 07/06/2023 07:03 WG2089450 4-Chlorotoluene U 0.114 1.00 1 07/06/2023 07:03 WG2089450 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/06/2023 19:12 WG2090274 1,2-Dibromoethane U 0.126 1.00 1 07/06/2023 07:03 WG2089450 Dibromomethane U 0.122 1.00 1 07/06/2023 07:03 WG2089450 1,2-Dichlorobenzene U 0.107 1.00 1 07/06/2023 07:03 WG2089450 1,3-Dichlorobenzene U 0.110 1.00 1 07/06/2023 07:03 WG2089450 1,4-Dichlorobenzene U 0.120 1.00 1 07/06/2023 07:03 WG2089450 Dichlorodifluoromethane U 0.374 5.00 1 07/06/2023 07:03 WG2089450 1,1-Dichloroethane U 0.100 1.00 1 07/06/2023 07:03 WG2089450 1,2-Dichloroethane U 0.0819 1.00 1 07/06/2023 07:03 WG2089450 1,1-Dichloroethene U 0.188 1.00 1 07/06/2023 07:03 WG2089450 cis-1,2-Dichloroethene U 0.126 1.00 1 07/06/2023 19:12 WG2090274 trans-1,2-Dichloroethene U 0.149 1.00 1 07/06/2023 07:03 WG2089450 1,2-Dichloropropane U 0.149 1.00 1 07/06/2023 07:03 WG2089450 1,1-Dichloropropene U 0.142 1.00 1 07/06/2023 07:03 WG2089450 1,3-Dichloropropane U 0.110 1.00 1 07/06/2023 07:03 WG2089450 2,2-Dichloropropane U 0.161 1.00 1 07/06/2023 07:03 WG2089450 Di-isopropyl ether U 0.105 1.00 1 07/06/2023 07:03 WG2089450 Ethylbenzene U 0.137 1.00 1 07/06/2023 07:03 WG2089450 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/06/2023 07:03 WG2089450 Isopropylbenzene U 0.105 1.00 1 07/06/2023 07:03 WG2089450 p-Isopropyltoluene U 0.120 1.00 1 07/06/2023 07:03 WG2089450 2-Butanone (MEK)U 1.19 10.0 1 07/06/2023 07:03 WG2089450 Methylene Chloride U 0.430 5.00 1 07/06/2023 07:03 WG2089450 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/06/2023 07:03 WG2089450 Methyl tert-butyl ether 1.07 0.101 1.00 1 07/06/2023 07:03 WG2089450 Naphthalene U 1.00 5.00 1 07/06/2023 07:03 WG2089450 n-Propylbenzene U 0.0993 1.00 1 07/06/2023 07:03 WG2089450 Styrene U 0.118 1.00 1 07/06/2023 07:03 WG2089450 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/06/2023 07:03 WG2089450 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/06/2023 07:03 WG2089450 Tetrachloroethene U 0.300 1.00 1 07/06/2023 07:03 WG2089450 Toluene U 0.278 1.00 1 07/06/2023 07:03 WG2089450 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/06/2023 07:03 WG2089450 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/06/2023 07:03 WG2089450 1,1,1-Trichloroethane U 0.149 1.00 1 07/06/2023 07:03 WG2089450 1,1,2-Trichloroethane U 0.158 1.00 1 07/06/2023 07:03 WG2089450 Trichloroethene U 0.190 1.00 1 07/06/2023 07:03 WG2089450 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 14 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 14 of 39 SAMPLE RESULTS - 05 L1630546 WSW-6 Collected date/time: 06/26/23 12:00 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/06/2023 07:03 WG2089450 1,2,3-Trichloropropane U 0.237 2.50 1 07/06/2023 07:03 WG2089450 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/06/2023 07:03 WG2089450 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/06/2023 07:03 WG2089450 Vinyl chloride U 0.234 1.00 1 07/06/2023 07:03 WG2089450 o-Xylene U 0.174 1.00 1 07/06/2023 07:03 WG2089450 m&p-Xylenes U 0.430 2.00 1 07/06/2023 07:03 WG2089450 (S) Toluene-d8 109 80.0-120 07/06/2023 07:03 WG2089450 (S) Toluene-d8 113 80.0-120 07/06/2023 19:12 WG2090274 (S) 4-Bromofluorobenzene 97.4 77.0-126 07/06/2023 07:03 WG2089450 (S) 4-Bromofluorobenzene 110 77.0-126 07/06/2023 19:12 WG2090274 (S) 1,2-Dichloroethane-d4 109 70.0-130 07/06/2023 07:03 WG2089450 (S) 1,2-Dichloroethane-d4 109 70.0-130 07/06/2023 19:12 WG2090274 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 15 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 15 of 39 SAMPLE RESULTS - 06 L1630546 P#072 Collected date/time: 06/26/23 10:45 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/06/2023 07:25 WG2089450 Acrolein U J3 2.54 50.0 1 07/06/2023 07:25 WG2089450 Acrylonitrile U 0.671 10.0 1 07/06/2023 07:25 WG2089450 Benzene U 0.0941 1.00 1 07/06/2023 07:25 WG2089450 Bromobenzene U 0.118 1.00 1 07/06/2023 07:25 WG2089450 Bromodichloromethane U 0.136 1.00 1 07/06/2023 07:25 WG2089450 Bromoform U 0.129 1.00 1 07/06/2023 07:25 WG2089450 Bromomethane U 0.605 5.00 1 07/06/2023 07:25 WG2089450 n-Butylbenzene U 0.157 1.00 1 07/06/2023 07:25 WG2089450 sec-Butylbenzene U 0.125 1.00 1 07/06/2023 07:25 WG2089450 tert-Butylbenzene U 0.127 1.00 1 07/06/2023 07:25 WG2089450 Carbon tetrachloride U 0.128 1.00 1 07/06/2023 07:25 WG2089450 Chlorobenzene U 0.116 1.00 1 07/06/2023 07:25 WG2089450 Chlorodibromomethane U 0.140 1.00 1 07/06/2023 07:25 WG2089450 Chloroethane U 0.192 5.00 1 07/06/2023 07:25 WG2089450 Chloroform U 0.111 5.00 1 07/06/2023 07:25 WG2089450 Chloromethane U 0.960 2.50 1 07/06/2023 07:25 WG2089450 2-Chlorotoluene U 0.106 1.00 1 07/06/2023 07:25 WG2089450 4-Chlorotoluene U 0.114 1.00 1 07/06/2023 07:25 WG2089450 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/06/2023 19:34 WG2090274 1,2-Dibromoethane U 0.126 1.00 1 07/06/2023 07:25 WG2089450 Dibromomethane U 0.122 1.00 1 07/06/2023 07:25 WG2089450 1,2-Dichlorobenzene U 0.107 1.00 1 07/06/2023 07:25 WG2089450 1,3-Dichlorobenzene U 0.110 1.00 1 07/06/2023 07:25 WG2089450 1,4-Dichlorobenzene U 0.120 1.00 1 07/06/2023 07:25 WG2089450 Dichlorodifluoromethane U 0.374 5.00 1 07/06/2023 07:25 WG2089450 1,1-Dichloroethane U 0.100 1.00 1 07/06/2023 07:25 WG2089450 1,2-Dichloroethane U 0.0819 1.00 1 07/06/2023 07:25 WG2089450 1,1-Dichloroethene U 0.188 1.00 1 07/06/2023 07:25 WG2089450 cis-1,2-Dichloroethene U 0.126 1.00 1 07/06/2023 19:34 WG2090274 trans-1,2-Dichloroethene U 0.149 1.00 1 07/06/2023 07:25 WG2089450 1,2-Dichloropropane U 0.149 1.00 1 07/06/2023 07:25 WG2089450 1,1-Dichloropropene U 0.142 1.00 1 07/06/2023 07:25 WG2089450 1,3-Dichloropropane U 0.110 1.00 1 07/06/2023 07:25 WG2089450 2,2-Dichloropropane U 0.161 1.00 1 07/06/2023 07:25 WG2089450 Di-isopropyl ether U 0.105 1.00 1 07/06/2023 07:25 WG2089450 Ethylbenzene U 0.137 1.00 1 07/06/2023 07:25 WG2089450 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/06/2023 07:25 WG2089450 Isopropylbenzene U 0.105 1.00 1 07/06/2023 07:25 WG2089450 p-Isopropyltoluene U 0.120 1.00 1 07/06/2023 07:25 WG2089450 2-Butanone (MEK)U 1.19 10.0 1 07/06/2023 07:25 WG2089450 Methylene Chloride U 0.430 5.00 1 07/06/2023 07:25 WG2089450 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/06/2023 07:25 WG2089450 Methyl tert-butyl ether U 0.101 1.00 1 07/06/2023 07:25 WG2089450 Naphthalene U 1.00 5.00 1 07/06/2023 07:25 WG2089450 n-Propylbenzene U 0.0993 1.00 1 07/06/2023 07:25 WG2089450 Styrene U 0.118 1.00 1 07/06/2023 07:25 WG2089450 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/06/2023 07:25 WG2089450 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/06/2023 07:25 WG2089450 Tetrachloroethene U 0.300 1.00 1 07/06/2023 07:25 WG2089450 Toluene U 0.278 1.00 1 07/06/2023 07:25 WG2089450 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/06/2023 07:25 WG2089450 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/06/2023 07:25 WG2089450 1,1,1-Trichloroethane U 0.149 1.00 1 07/06/2023 07:25 WG2089450 1,1,2-Trichloroethane U 0.158 1.00 1 07/06/2023 07:25 WG2089450 Trichloroethene U 0.190 1.00 1 07/06/2023 07:25 WG2089450 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 16 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 16 of 39 SAMPLE RESULTS - 06 L1630546 P#072 Collected date/time: 06/26/23 10:45 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/06/2023 07:25 WG2089450 1,2,3-Trichloropropane U 0.237 2.50 1 07/06/2023 07:25 WG2089450 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/06/2023 07:25 WG2089450 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/06/2023 07:25 WG2089450 Vinyl chloride U 0.234 1.00 1 07/06/2023 07:25 WG2089450 o-Xylene U 0.174 1.00 1 07/06/2023 07:25 WG2089450 m&p-Xylenes U 0.430 2.00 1 07/06/2023 07:25 WG2089450 (S) Toluene-d8 104 80.0-120 07/06/2023 07:25 WG2089450 (S) Toluene-d8 112 80.0-120 07/06/2023 19:34 WG2090274 (S) 4-Bromofluorobenzene 92.1 77.0-126 07/06/2023 07:25 WG2089450 (S) 4-Bromofluorobenzene 109 77.0-126 07/06/2023 19:34 WG2090274 (S) 1,2-Dichloroethane-d4 108 70.0-130 07/06/2023 07:25 WG2089450 (S) 1,2-Dichloroethane-d4 105 70.0-130 07/06/2023 19:34 WG2090274 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 17 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 17 of 39 SAMPLE RESULTS - 07 L1630546 P#082 Collected date/time: 06/26/23 12:20 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/06/2023 07:47 WG2089450 Acrolein U J3 2.54 50.0 1 07/06/2023 07:47 WG2089450 Acrylonitrile U 0.671 10.0 1 07/06/2023 07:47 WG2089450 Benzene U 0.0941 1.00 1 07/06/2023 07:47 WG2089450 Bromobenzene U 0.118 1.00 1 07/06/2023 07:47 WG2089450 Bromodichloromethane U 0.136 1.00 1 07/06/2023 07:47 WG2089450 Bromoform U 0.129 1.00 1 07/06/2023 07:47 WG2089450 Bromomethane U 0.605 5.00 1 07/06/2023 07:47 WG2089450 n-Butylbenzene U 0.157 1.00 1 07/06/2023 07:47 WG2089450 sec-Butylbenzene U 0.125 1.00 1 07/06/2023 07:47 WG2089450 tert-Butylbenzene U 0.127 1.00 1 07/06/2023 07:47 WG2089450 Carbon tetrachloride U 0.128 1.00 1 07/06/2023 07:47 WG2089450 Chlorobenzene U 0.116 1.00 1 07/06/2023 07:47 WG2089450 Chlorodibromomethane U 0.140 1.00 1 07/06/2023 07:47 WG2089450 Chloroethane U 0.192 5.00 1 07/06/2023 07:47 WG2089450 Chloroform U 0.111 5.00 1 07/06/2023 07:47 WG2089450 Chloromethane U 0.960 2.50 1 07/06/2023 07:47 WG2089450 2-Chlorotoluene U 0.106 1.00 1 07/06/2023 07:47 WG2089450 4-Chlorotoluene U 0.114 1.00 1 07/06/2023 07:47 WG2089450 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/06/2023 19:56 WG2090274 1,2-Dibromoethane U 0.126 1.00 1 07/06/2023 07:47 WG2089450 Dibromomethane U 0.122 1.00 1 07/06/2023 07:47 WG2089450 1,2-Dichlorobenzene U 0.107 1.00 1 07/06/2023 07:47 WG2089450 1,3-Dichlorobenzene U 0.110 1.00 1 07/06/2023 07:47 WG2089450 1,4-Dichlorobenzene U 0.120 1.00 1 07/06/2023 07:47 WG2089450 Dichlorodifluoromethane U 0.374 5.00 1 07/06/2023 07:47 WG2089450 1,1-Dichloroethane U 0.100 1.00 1 07/06/2023 07:47 WG2089450 1,2-Dichloroethane U 0.0819 1.00 1 07/06/2023 07:47 WG2089450 1,1-Dichloroethene U 0.188 1.00 1 07/06/2023 07:47 WG2089450 cis-1,2-Dichloroethene U 0.126 1.00 1 07/06/2023 19:56 WG2090274 trans-1,2-Dichloroethene U 0.149 1.00 1 07/06/2023 07:47 WG2089450 1,2-Dichloropropane U 0.149 1.00 1 07/06/2023 07:47 WG2089450 1,1-Dichloropropene U 0.142 1.00 1 07/06/2023 07:47 WG2089450 1,3-Dichloropropane U 0.110 1.00 1 07/06/2023 07:47 WG2089450 2,2-Dichloropropane U 0.161 1.00 1 07/06/2023 07:47 WG2089450 Di-isopropyl ether U 0.105 1.00 1 07/06/2023 07:47 WG2089450 Ethylbenzene U 0.137 1.00 1 07/06/2023 07:47 WG2089450 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/06/2023 07:47 WG2089450 Isopropylbenzene U 0.105 1.00 1 07/06/2023 07:47 WG2089450 p-Isopropyltoluene U 0.120 1.00 1 07/06/2023 07:47 WG2089450 2-Butanone (MEK)U 1.19 10.0 1 07/06/2023 07:47 WG2089450 Methylene Chloride U 0.430 5.00 1 07/06/2023 07:47 WG2089450 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/06/2023 07:47 WG2089450 Methyl tert-butyl ether U 0.101 1.00 1 07/06/2023 07:47 WG2089450 Naphthalene U 1.00 5.00 1 07/06/2023 07:47 WG2089450 n-Propylbenzene U 0.0993 1.00 1 07/06/2023 07:47 WG2089450 Styrene U 0.118 1.00 1 07/06/2023 07:47 WG2089450 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/06/2023 07:47 WG2089450 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/06/2023 07:47 WG2089450 Tetrachloroethene U 0.300 1.00 1 07/06/2023 07:47 WG2089450 Toluene U 0.278 1.00 1 07/06/2023 07:47 WG2089450 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/06/2023 07:47 WG2089450 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/06/2023 07:47 WG2089450 1,1,1-Trichloroethane U 0.149 1.00 1 07/06/2023 07:47 WG2089450 1,1,2-Trichloroethane U 0.158 1.00 1 07/06/2023 07:47 WG2089450 Trichloroethene U 0.190 1.00 1 07/06/2023 07:47 WG2089450 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 18 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 18 of 39 SAMPLE RESULTS - 07 L1630546 P#082 Collected date/time: 06/26/23 12:20 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/06/2023 07:47 WG2089450 1,2,3-Trichloropropane U 0.237 2.50 1 07/06/2023 07:47 WG2089450 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/06/2023 07:47 WG2089450 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/06/2023 07:47 WG2089450 Vinyl chloride U 0.234 1.00 1 07/06/2023 07:47 WG2089450 o-Xylene U 0.174 1.00 1 07/06/2023 07:47 WG2089450 m&p-Xylenes U 0.430 2.00 1 07/06/2023 07:47 WG2089450 (S) Toluene-d8 107 80.0-120 07/06/2023 07:47 WG2089450 (S) Toluene-d8 112 80.0-120 07/06/2023 19:56 WG2090274 (S) 4-Bromofluorobenzene 94.9 77.0-126 07/06/2023 07:47 WG2089450 (S) 4-Bromofluorobenzene 108 77.0-126 07/06/2023 19:56 WG2090274 (S) 1,2-Dichloroethane-d4 113 70.0-130 07/06/2023 07:47 WG2089450 (S) 1,2-Dichloroethane-d4 112 70.0-130 07/06/2023 19:56 WG2090274 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 19 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 19 of 39 SAMPLE RESULTS - 08 L1630546 FB-1 Collected date/time: 06/26/23 12:30 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 07/06/2023 01:35 WG2089450 Acrolein U J3 2.54 50.0 1 07/06/2023 01:35 WG2089450 Acrylonitrile U 0.671 10.0 1 07/06/2023 01:35 WG2089450 Benzene U 0.0941 1.00 1 07/06/2023 01:35 WG2089450 Bromobenzene U 0.118 1.00 1 07/06/2023 01:35 WG2089450 Bromodichloromethane U 0.136 1.00 1 07/06/2023 01:35 WG2089450 Bromoform U 0.129 1.00 1 07/06/2023 01:35 WG2089450 Bromomethane U 0.605 5.00 1 07/06/2023 01:35 WG2089450 n-Butylbenzene U 0.157 1.00 1 07/06/2023 01:35 WG2089450 sec-Butylbenzene U 0.125 1.00 1 07/06/2023 01:35 WG2089450 tert-Butylbenzene U 0.127 1.00 1 07/06/2023 01:35 WG2089450 Carbon tetrachloride U 0.128 1.00 1 07/06/2023 01:35 WG2089450 Chlorobenzene U 0.116 1.00 1 07/06/2023 01:35 WG2089450 Chlorodibromomethane U 0.140 1.00 1 07/06/2023 01:35 WG2089450 Chloroethane U 0.192 5.00 1 07/06/2023 01:35 WG2089450 Chloroform U 0.111 5.00 1 07/06/2023 01:35 WG2089450 Chloromethane U 0.960 2.50 1 07/06/2023 01:35 WG2089450 2-Chlorotoluene U 0.106 1.00 1 07/06/2023 01:35 WG2089450 4-Chlorotoluene U 0.114 1.00 1 07/06/2023 01:35 WG2089450 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 07/06/2023 20:17 WG2090274 1,2-Dibromoethane U 0.126 1.00 1 07/06/2023 01:35 WG2089450 Dibromomethane U 0.122 1.00 1 07/06/2023 01:35 WG2089450 1,2-Dichlorobenzene U 0.107 1.00 1 07/06/2023 01:35 WG2089450 1,3-Dichlorobenzene U 0.110 1.00 1 07/06/2023 01:35 WG2089450 1,4-Dichlorobenzene U 0.120 1.00 1 07/06/2023 01:35 WG2089450 Dichlorodifluoromethane U 0.374 5.00 1 07/06/2023 01:35 WG2089450 1,1-Dichloroethane U 0.100 1.00 1 07/06/2023 01:35 WG2089450 1,2-Dichloroethane U 0.0819 1.00 1 07/06/2023 01:35 WG2089450 1,1-Dichloroethene U 0.188 1.00 1 07/06/2023 01:35 WG2089450 cis-1,2-Dichloroethene U 0.126 1.00 1 07/06/2023 01:35 WG2089450 trans-1,2-Dichloroethene U 0.149 1.00 1 07/06/2023 01:35 WG2089450 1,2-Dichloropropane U 0.149 1.00 1 07/06/2023 01:35 WG2089450 1,1-Dichloropropene U 0.142 1.00 1 07/06/2023 01:35 WG2089450 1,3-Dichloropropane U 0.110 1.00 1 07/06/2023 01:35 WG2089450 2,2-Dichloropropane U 0.161 1.00 1 07/06/2023 01:35 WG2089450 Di-isopropyl ether U 0.105 1.00 1 07/06/2023 01:35 WG2089450 Ethylbenzene U 0.137 1.00 1 07/06/2023 01:35 WG2089450 Hexachloro-1,3-butadiene U 0.337 1.00 1 07/06/2023 01:35 WG2089450 Isopropylbenzene U 0.105 1.00 1 07/06/2023 01:35 WG2089450 p-Isopropyltoluene U 0.120 1.00 1 07/06/2023 01:35 WG2089450 2-Butanone (MEK)U 1.19 10.0 1 07/06/2023 01:35 WG2089450 Methylene Chloride 0.602 J 0.430 5.00 1 07/06/2023 01:35 WG2089450 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 07/06/2023 01:35 WG2089450 Methyl tert-butyl ether U 0.101 1.00 1 07/06/2023 01:35 WG2089450 Naphthalene U 1.00 5.00 1 07/06/2023 01:35 WG2089450 n-Propylbenzene U 0.0993 1.00 1 07/06/2023 01:35 WG2089450 Styrene U 0.118 1.00 1 07/06/2023 01:35 WG2089450 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 07/06/2023 01:35 WG2089450 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 07/06/2023 01:35 WG2089450 Tetrachloroethene U 0.300 1.00 1 07/06/2023 01:35 WG2089450 Toluene U 0.278 1.00 1 07/06/2023 01:35 WG2089450 1,2,3-Trichlorobenzene U 0.230 1.00 1 07/06/2023 01:35 WG2089450 1,2,4-Trichlorobenzene U 0.481 1.00 1 07/06/2023 01:35 WG2089450 1,1,1-Trichloroethane U 0.149 1.00 1 07/06/2023 01:35 WG2089450 1,1,2-Trichloroethane U 0.158 1.00 1 07/06/2023 01:35 WG2089450 Trichloroethene U 0.190 1.00 1 07/06/2023 01:35 WG2089450 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 20 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 20 of 39 SAMPLE RESULTS - 08 L1630546 FB-1 Collected date/time: 06/26/23 12:30 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 07/06/2023 01:35 WG2089450 1,2,3-Trichloropropane U 0.237 2.50 1 07/06/2023 01:35 WG2089450 1,2,4-Trimethylbenzene U 0.322 1.00 1 07/06/2023 01:35 WG2089450 1,3,5-Trimethylbenzene U 0.104 1.00 1 07/06/2023 01:35 WG2089450 Vinyl chloride U 0.234 1.00 1 07/06/2023 01:35 WG2089450 o-Xylene U 0.174 1.00 1 07/06/2023 01:35 WG2089450 m&p-Xylenes U 0.430 2.00 1 07/06/2023 01:35 WG2089450 (S) Toluene-d8 107 80.0-120 07/06/2023 01:35 WG2089450 (S) Toluene-d8 113 80.0-120 07/06/2023 20:17 WG2090274 (S) 4-Bromofluorobenzene 92.9 77.0-126 07/06/2023 01:35 WG2089450 (S) 4-Bromofluorobenzene 107 77.0-126 07/06/2023 20:17 WG2090274 (S) 1,2-Dichloroethane-d4 108 70.0-130 07/06/2023 01:35 WG2089450 (S) 1,2-Dichloroethane-d4 110 70.0-130 07/06/2023 20:17 WG2090274 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 21 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 21 of 39 QUALITY CONTROL SUMMARYWG2089372 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-01,02 Method Blank (MB) (MB) R3946010-4 07/05/23 10:52 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acetone U 11.3 50.0 Acrolein U 2.54 50.0 Acrylonitrile U 0.671 10.0 Benzene U 0.0941 1.00 Bromobenzene U 0.118 1.00 Bromodichloromethane U 0.136 1.00 Bromoform U 0.129 1.00 Bromomethane U 0.605 5.00 n-Butylbenzene U 0.157 1.00 sec-Butylbenzene U 0.125 1.00 tert-Butylbenzene U 0.127 1.00 Carbon tetrachloride U 0.128 1.00 Chlorobenzene U 0.116 1.00 Chlorodibromomethane U 0.140 1.00 Chloroethane U 0.192 5.00 Chloroform U 0.111 5.00 Chloromethane U 0.960 2.50 2-Chlorotoluene U 0.106 1.00 4-Chlorotoluene U 0.114 1.00 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1,2-Dibromoethane U 0.126 1.00 Dibromomethane U 0.122 1.00 1,2-Dichlorobenzene U 0.107 1.00 1,3-Dichlorobenzene U 0.110 1.00 1,4-Dichlorobenzene U 0.120 1.00 Dichlorodifluoromethane U 0.374 5.00 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 1,2-Dichloropropane U 0.149 1.00 1,1-Dichloropropene U 0.142 1.00 1,3-Dichloropropane U 0.110 1.00 2,2-Dichloropropane U 0.161 1.00 Di-isopropyl ether U 0.105 1.00 Ethylbenzene U 0.137 1.00 Hexachloro-1,3-butadiene U 0.337 1.00 Isopropylbenzene U 0.105 1.00 p-Isopropyltoluene U 0.120 1.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 22 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 22 of 39 QUALITY CONTROL SUMMARYWG2089372 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-01,02 Method Blank (MB) (MB) R3946010-4 07/05/23 10:52 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l 2-Butanone (MEK)U 1.19 10.0 Methylene Chloride U 0.430 5.00 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 Methyl tert-butyl ether U 0.101 1.00 Naphthalene U 1.00 5.00 n-Propylbenzene U 0.0993 1.00 Styrene U 0.118 1.00 1,1,1,2-Tetrachloroethane U 0.147 1.00 1,1,2,2-Tetrachloroethane U 0.133 1.00 Tetrachloroethene U 0.300 1.00 Toluene U 0.278 1.00 1,2,3-Trichlorobenzene U 0.230 1.00 1,2,4-Trichlorobenzene U 0.481 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Trichlorofluoromethane U 0.160 5.00 1,2,3-Trichloropropane U 0.237 2.50 1,2,4-Trimethylbenzene U 0.322 1.00 1,3,5-Trimethylbenzene U 0.104 1.00 Vinyl chloride U 0.234 1.00 o-Xylene U 0.174 1.00 m&p-Xylenes U 0.430 2.00 (S) Toluene-d8 108 80.0-120 (S) 4-Bromofluorobenzene 97.6 77.0-126 (S) 1,2-Dichloroethane-d4 113 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3946010-1 07/05/23 09:25 • (LCSD) R3946010-2 07/05/23 09:46 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Acetone 25.0 29.1 29.0 116 116 19.0-160 0.344 27 Acrolein 25.0 17.3 19.1 69.2 76.4 10.0-160 9.89 26 Acrylonitrile 25.0 23.6 23.3 94.4 93.2 55.0-149 1.28 20 Benzene 5.00 5.41 5.16 108 103 70.0-123 4.73 20 Bromobenzene 5.00 5.14 4.96 103 99.2 73.0-121 3.56 20 Bromodichloromethane 5.00 5.75 5.16 115 103 75.0-120 10.8 20 Bromoform 5.00 5.45 4.73 109 94.6 68.0-132 14.1 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 23 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 23 of 39 QUALITY CONTROL SUMMARYWG2089372 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-01,02 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3946010-1 07/05/23 09:25 • (LCSD) R3946010-2 07/05/23 09:46 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Bromomethane 5.00 8.03 6.85 161 137 10.0-160 J4 15.9 25 n-Butylbenzene 5.00 4.01 4.16 80.2 83.2 73.0-125 3.67 20 sec-Butylbenzene 5.00 5.07 4.92 101 98.4 75.0-125 3.00 20 tert-Butylbenzene 5.00 5.04 5.16 101 103 76.0-124 2.35 20 Carbon tetrachloride 5.00 5.61 5.97 112 119 68.0-126 6.22 20 Chlorobenzene 5.00 5.16 5.18 103 104 80.0-121 0.387 20 Chlorodibromomethane 5.00 5.16 5.01 103 100 77.0-125 2.95 20 Chloroethane 5.00 5.65 5.73 113 115 47.0-150 1.41 20 Chloroform 5.00 5.55 5.37 111 107 73.0-120 3.30 20 Chloromethane 5.00 4.72 4.83 94.4 96.6 41.0-142 2.30 20 2-Chlorotoluene 5.00 5.45 5.03 109 101 76.0-123 8.02 20 4-Chlorotoluene 5.00 5.09 4.87 102 97.4 75.0-122 4.42 20 1,2-Dibromo-3-Chloropropane 5.00 4.22 4.44 84.4 88.8 58.0-134 5.08 20 1,2-Dibromoethane 5.00 5.00 4.97 100 99.4 80.0-122 0.602 20 Dibromomethane 5.00 5.10 4.82 102 96.4 80.0-120 5.65 20 1,2-Dichlorobenzene 5.00 5.39 5.14 108 103 79.0-121 4.75 20 1,3-Dichlorobenzene 5.00 5.07 4.84 101 96.8 79.0-120 4.64 20 1,4-Dichlorobenzene 5.00 5.35 4.87 107 97.4 79.0-120 9.39 20 Dichlorodifluoromethane 5.00 5.07 5.16 101 103 51.0-149 1.76 20 1,1-Dichloroethane 5.00 5.33 5.26 107 105 70.0-126 1.32 20 1,2-Dichloroethane 5.00 5.19 4.69 104 93.8 70.0-128 10.1 20 1,1-Dichloroethene 5.00 5.10 5.43 102 109 71.0-124 6.27 20 cis-1,2-Dichloroethene 5.00 5.41 5.13 108 103 73.0-120 5.31 20 trans-1,2-Dichloroethene 5.00 5.30 5.21 106 104 73.0-120 1.71 20 1,2-Dichloropropane 5.00 4.97 5.08 99.4 102 77.0-125 2.19 20 1,1-Dichloropropene 5.00 5.45 5.15 109 103 74.0-126 5.66 20 1,3-Dichloropropane 5.00 5.07 5.21 101 104 80.0-120 2.72 20 2,2-Dichloropropane 5.00 3.78 3.52 75.6 70.4 58.0-130 7.12 20 Di-isopropyl ether 5.00 4.97 4.80 99.4 96.0 58.0-138 3.48 20 Ethylbenzene 5.00 5.03 4.87 101 97.4 79.0-123 3.23 20 Hexachloro-1,3-butadiene 5.00 5.90 5.27 118 105 54.0-138 11.3 20 Isopropylbenzene 5.00 4.99 5.01 99.8 100 76.0-127 0.400 20 p-Isopropyltoluene 5.00 5.12 5.10 102 102 76.0-125 0.391 20 2-Butanone (MEK)25.0 23.4 23.6 93.6 94.4 44.0-160 0.851 20 Methylene Chloride 5.00 5.12 5.16 102 103 67.0-120 0.778 20 4-Methyl-2-pentanone (MIBK)25.0 24.3 22.9 97.2 91.6 68.0-142 5.93 20 Methyl tert-butyl ether 5.00 5.35 5.03 107 101 68.0-125 6.17 20 Naphthalene 5.00 3.67 3.27 73.4 65.4 54.0-135 11.5 20 n-Propylbenzene 5.00 5.02 4.99 100 99.8 77.0-124 0.599 20 Styrene 5.00 4.58 4.53 91.6 90.6 73.0-130 1.10 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 24 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 24 of 39 QUALITY CONTROL SUMMARYWG2089372 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-01,02 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3946010-1 07/05/23 09:25 • (LCSD) R3946010-2 07/05/23 09:46 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% 1,1,1,2-Tetrachloroethane 5.00 4.97 5.30 99.4 106 75.0-125 6.43 20 1,1,2,2-Tetrachloroethane 5.00 3.96 3.87 79.2 77.4 65.0-130 2.30 20 Tetrachloroethene 5.00 5.53 5.76 111 115 72.0-132 4.07 20 Toluene 5.00 5.03 5.14 101 103 79.0-120 2.16 20 1,2,3-Trichlorobenzene 5.00 4.10 4.07 82.0 81.4 50.0-138 0.734 20 1,2,4-Trichlorobenzene 5.00 3.74 4.23 74.8 84.6 57.0-137 12.3 20 1,1,1-Trichloroethane 5.00 5.65 5.65 113 113 73.0-124 0.000 20 1,1,2-Trichloroethane 5.00 5.33 5.25 107 105 80.0-120 1.51 20 Trichloroethene 5.00 6.46 6.06 129 121 78.0-124 J4 6.39 20 Trichlorofluoromethane 5.00 5.80 6.12 116 122 59.0-147 5.37 20 1,2,3-Trichloropropane 5.00 5.82 5.25 116 105 73.0-130 10.3 20 1,2,4-Trimethylbenzene 5.00 4.97 4.79 99.4 95.8 76.0-121 3.69 20 1,3,5-Trimethylbenzene 5.00 5.21 5.12 104 102 76.0-122 1.74 20 Vinyl chloride 5.00 5.26 5.27 105 105 67.0-131 0.190 20 o-Xylene 5.00 4.52 4.94 90.4 98.8 80.0-122 8.88 20 m&p-Xylenes 10.0 9.96 9.76 99.6 97.6 80.0-122 2.03 20 (S) Toluene-d8 103 104 80.0-120 (S) 4-Bromofluorobenzene 94.0 96.4 77.0-126 (S) 1,2-Dichloroethane-d4 115 114 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 25 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 25 of 39 QUALITY CONTROL SUMMARYWG2089450 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-04,05,06,07,08 Method Blank (MB) (MB) R3945348-3 07/05/23 21:26 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acetone U 11.3 50.0 Acrolein U 2.54 50.0 Acrylonitrile U 0.671 10.0 Benzene U 0.0941 1.00 Bromobenzene U 0.118 1.00 Bromodichloromethane U 0.136 1.00 Bromoform U 0.129 1.00 Bromomethane U 0.605 5.00 n-Butylbenzene U 0.157 1.00 sec-Butylbenzene U 0.125 1.00 tert-Butylbenzene U 0.127 1.00 Carbon tetrachloride U 0.128 1.00 Chlorobenzene U 0.116 1.00 Chlorodibromomethane U 0.140 1.00 Chloroethane U 0.192 5.00 Chloroform U 0.111 5.00 Chloromethane U 0.960 2.50 2-Chlorotoluene U 0.106 1.00 4-Chlorotoluene U 0.114 1.00 1,2-Dibromoethane U 0.126 1.00 Dibromomethane U 0.122 1.00 1,2-Dichlorobenzene U 0.107 1.00 1,3-Dichlorobenzene U 0.110 1.00 1,4-Dichlorobenzene U 0.120 1.00 Dichlorodifluoromethane U 0.374 5.00 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 1,2-Dichloropropane U 0.149 1.00 1,1-Dichloropropene U 0.142 1.00 1,3-Dichloropropane U 0.110 1.00 2,2-Dichloropropane U 0.161 1.00 Di-isopropyl ether U 0.105 1.00 Ethylbenzene U 0.137 1.00 Hexachloro-1,3-butadiene U 0.337 1.00 Isopropylbenzene U 0.105 1.00 p-Isopropyltoluene U 0.120 1.00 2-Butanone (MEK)U 1.19 10.0 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 26 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 26 of 39 QUALITY CONTROL SUMMARYWG2089450 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-04,05,06,07,08 Method Blank (MB) (MB) R3945348-3 07/05/23 21:26 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Methylene Chloride U 0.430 5.00 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 Methyl tert-butyl ether U 0.101 1.00 Naphthalene U 1.00 5.00 n-Propylbenzene U 0.0993 1.00 Styrene U 0.118 1.00 1,1,1,2-Tetrachloroethane U 0.147 1.00 1,1,2,2-Tetrachloroethane U 0.133 1.00 Tetrachloroethene U 0.300 1.00 Toluene U 0.278 1.00 1,2,3-Trichlorobenzene U 0.230 1.00 1,2,4-Trichlorobenzene U 0.481 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Trichlorofluoromethane U 0.160 5.00 1,2,3-Trichloropropane U 0.237 2.50 1,2,4-Trimethylbenzene U 0.322 1.00 1,3,5-Trimethylbenzene U 0.104 1.00 Vinyl chloride U 0.234 1.00 o-Xylene U 0.174 1.00 m&p-Xylenes U 0.430 2.00 (S) Toluene-d8 108 80.0-120 (S) 4-Bromofluorobenzene 91.9 77.0-126 (S) 1,2-Dichloroethane-d4 109 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3945348-1 07/05/23 20:20 • (LCSD) R3945348-2 07/05/23 20:42 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Acetone 25.0 32.7 32.9 131 132 19.0-160 0.610 27 Acrolein 25.0 22.4 16.7 89.6 66.8 10.0-160 J3 29.2 26 Acrylonitrile 25.0 27.9 25.4 112 102 55.0-149 9.38 20 Benzene 5.00 5.44 5.47 109 109 70.0-123 0.550 20 Bromobenzene 5.00 5.13 5.03 103 101 73.0-121 1.97 20 Bromodichloromethane 5.00 5.53 5.70 111 114 75.0-120 3.03 20 Bromoform 5.00 4.95 4.97 99.0 99.4 68.0-132 0.403 20 Bromomethane 5.00 4.03 4.25 80.6 85.0 10.0-160 5.31 25 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 27 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 27 of 39 QUALITY CONTROL SUMMARYWG2089450 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-04,05,06,07,08 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3945348-1 07/05/23 20:20 • (LCSD) R3945348-2 07/05/23 20:42 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% n-Butylbenzene 5.00 4.29 4.68 85.8 93.6 73.0-125 8.70 20 sec-Butylbenzene 5.00 5.37 5.30 107 106 75.0-125 1.31 20 tert-Butylbenzene 5.00 5.31 5.38 106 108 76.0-124 1.31 20 Carbon tetrachloride 5.00 5.37 5.80 107 116 68.0-126 7.70 20 Chlorobenzene 5.00 5.19 5.28 104 106 80.0-121 1.72 20 Chlorodibromomethane 5.00 4.93 4.94 98.6 98.8 77.0-125 0.203 20 Chloroethane 5.00 5.55 5.35 111 107 47.0-150 3.67 20 Chloroform 5.00 5.64 5.50 113 110 73.0-120 2.51 20 Chloromethane 5.00 4.54 4.32 90.8 86.4 41.0-142 4.97 20 2-Chlorotoluene 5.00 5.09 5.28 102 106 76.0-123 3.66 20 4-Chlorotoluene 5.00 5.14 5.38 103 108 75.0-122 4.56 20 1,2-Dibromoethane 5.00 5.12 5.19 102 104 80.0-122 1.36 20 Dibromomethane 5.00 5.59 4.91 112 98.2 80.0-120 13.0 20 1,2-Dichlorobenzene 5.00 5.48 5.39 110 108 79.0-121 1.66 20 1,3-Dichlorobenzene 5.00 4.82 4.93 96.4 98.6 79.0-120 2.26 20 1,4-Dichlorobenzene 5.00 4.77 5.14 95.4 103 79.0-120 7.47 20 Dichlorodifluoromethane 5.00 5.05 4.83 101 96.6 51.0-149 4.45 20 1,1-Dichloroethane 5.00 5.42 5.28 108 106 70.0-126 2.62 20 1,2-Dichloroethane 5.00 5.23 5.12 105 102 70.0-128 2.13 20 1,1-Dichloroethene 5.00 5.11 5.58 102 112 71.0-124 8.79 20 cis-1,2-Dichloroethene 5.00 5.35 5.24 107 105 73.0-120 2.08 20 trans-1,2-Dichloroethene 5.00 5.67 5.48 113 110 73.0-120 3.41 20 1,2-Dichloropropane 5.00 5.30 5.24 106 105 77.0-125 1.14 20 1,1-Dichloropropene 5.00 5.33 5.42 107 108 74.0-126 1.67 20 1,3-Dichloropropane 5.00 5.37 5.22 107 104 80.0-120 2.83 20 2,2-Dichloropropane 5.00 4.81 4.52 96.2 90.4 58.0-130 6.22 20 Di-isopropyl ether 5.00 5.52 5.09 110 102 58.0-138 8.11 20 Ethylbenzene 5.00 5.10 5.12 102 102 79.0-123 0.391 20 Hexachloro-1,3-butadiene 5.00 5.13 5.30 103 106 54.0-138 3.26 20 Isopropylbenzene 5.00 5.12 5.16 102 103 76.0-127 0.778 20 p-Isopropyltoluene 5.00 5.36 5.35 107 107 76.0-125 0.187 20 2-Butanone (MEK)25.0 26.6 25.8 106 103 44.0-160 3.05 20 Methylene Chloride 5.00 5.38 5.28 108 106 67.0-120 1.88 20 4-Methyl-2-pentanone (MIBK)25.0 26.2 25.3 105 101 68.0-142 3.50 20 Methyl tert-butyl ether 5.00 5.64 5.40 113 108 68.0-125 4.35 20 Naphthalene 5.00 3.81 3.75 76.2 75.0 54.0-135 1.59 20 n-Propylbenzene 5.00 5.21 5.21 104 104 77.0-124 0.000 20 Styrene 5.00 4.63 4.68 92.6 93.6 73.0-130 1.07 20 1,1,1,2-Tetrachloroethane 5.00 5.22 5.05 104 101 75.0-125 3.31 20 1,1,2,2-Tetrachloroethane 5.00 5.00 4.88 100 97.6 65.0-130 2.43 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 28 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 28 of 39 QUALITY CONTROL SUMMARYWG2089450 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-04,05,06,07,08 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3945348-1 07/05/23 20:20 • (LCSD) R3945348-2 07/05/23 20:42 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Tetrachloroethene 5.00 5.39 5.26 108 105 72.0-132 2.44 20 Toluene 5.00 4.99 5.15 99.8 103 79.0-120 3.16 20 1,2,3-Trichlorobenzene 5.00 4.81 4.59 96.2 91.8 50.0-138 4.68 20 1,2,4-Trichlorobenzene 5.00 4.68 4.66 93.6 93.2 57.0-137 0.428 20 1,1,1-Trichloroethane 5.00 5.69 5.87 114 117 73.0-124 3.11 20 1,1,2-Trichloroethane 5.00 5.17 5.11 103 102 80.0-120 1.17 20 Trichloroethene 5.00 5.81 5.63 116 113 78.0-124 3.15 20 Trichlorofluoromethane 5.00 5.85 5.67 117 113 59.0-147 3.12 20 1,2,3-Trichloropropane 5.00 5.73 5.76 115 115 73.0-130 0.522 20 1,2,4-Trimethylbenzene 5.00 5.15 5.21 103 104 76.0-121 1.16 20 1,3,5-Trimethylbenzene 5.00 5.51 5.55 110 111 76.0-122 0.723 20 Vinyl chloride 5.00 5.50 5.31 110 106 67.0-131 3.52 20 o-Xylene 5.00 4.85 5.02 97.0 100 80.0-122 3.44 20 m&p-Xylenes 10.0 10.1 9.86 101 98.6 80.0-122 2.40 20 (S) Toluene-d8 101 102 80.0-120 (S) 4-Bromofluorobenzene 94.5 97.8 77.0-126 (S) 1,2-Dichloroethane-d4 114 111 70.0-130 L1630515-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1630515-02 07/06/23 04:09 • (MS) R3945348-4 07/06/23 08:31 • (MSD) R3945348-5 07/06/23 08:53 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Acetone 25.0 U 27.8 33.7 111 135 1 10.0-160 19.2 35 Acrolein 25.0 U 25.8 28.5 103 114 1 10.0-160 9.94 39 Acrylonitrile 25.0 U 22.9 25.8 91.6 103 1 21.0-160 11.9 32 Benzene 5.00 U 5.04 5.77 101 115 1 17.0-158 13.5 27 Bromobenzene 5.00 U 4.77 5.60 95.4 112 1 30.0-149 16.0 28 Bromodichloromethane 5.00 U 5.32 6.02 106 120 1 31.0-150 12.3 27 Bromoform 5.00 U 4.98 5.67 99.6 113 1 29.0-150 13.0 29 Bromomethane 5.00 U 3.94 4.62 78.8 92.4 1 10.0-160 15.9 38 n-Butylbenzene 5.00 U 4.23 4.84 84.6 96.8 1 31.0-150 13.5 30 sec-Butylbenzene 5.00 U 4.88 5.63 97.6 113 1 33.0-155 14.3 29 tert-Butylbenzene 5.00 U 4.85 5.31 97.0 106 1 34.0-153 9.06 28 Carbon tetrachloride 5.00 U 5.78 6.74 116 135 1 23.0-159 15.3 28 Chlorobenzene 5.00 U 4.97 5.39 99.4 108 1 33.0-152 8.11 27 Chlorodibromomethane 5.00 U 4.89 5.51 97.8 110 1 37.0-149 11.9 27 Chloroethane 5.00 U 5.48 6.41 110 128 1 10.0-160 15.6 30 Chloroform 5.00 U 5.35 6.04 107 121 1 29.0-154 12.1 28 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 29 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 29 of 39 QUALITY CONTROL SUMMARYWG2089450 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-04,05,06,07,08 L1630515-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1630515-02 07/06/23 04:09 • (MS) R3945348-4 07/06/23 08:31 • (MSD) R3945348-5 07/06/23 08:53 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Chloromethane 5.00 U 3.94 4.52 78.8 90.4 1 10.0-160 13.7 29 2-Chlorotoluene 5.00 U 4.73 5.49 94.6 110 1 32.0-153 14.9 28 4-Chlorotoluene 5.00 U 4.55 5.37 91.0 107 1 32.0-150 16.5 28 1,2-Dibromoethane 5.00 U 4.52 5.24 90.4 105 1 34.0-147 14.8 27 Dibromomethane 5.00 U 5.13 5.93 103 119 1 30.0-151 14.5 27 1,2-Dichlorobenzene 5.00 U 4.96 5.78 99.2 116 1 34.0-149 15.3 28 1,3-Dichlorobenzene 5.00 U 4.72 5.16 94.4 103 1 36.0-146 8.91 27 1,4-Dichlorobenzene 5.00 U 4.77 5.40 95.4 108 1 35.0-142 12.4 27 Dichlorodifluoromethane 5.00 U 4.34 4.80 86.8 96.0 1 10.0-160 10.1 29 1,1-Dichloroethane 5.00 0.108 5.14 5.69 101 112 1 25.0-158 10.2 27 1,2-Dichloroethane 5.00 U 5.10 5.56 102 111 1 29.0-151 8.63 27 1,1-Dichloroethene 5.00 0.630 5.13 5.99 90.0 107 1 11.0-160 15.5 29 cis-1,2-Dichloroethene 5.00 3.05 5.55 5.93 50.0 57.6 1 10.0-160 6.62 27 trans-1,2-Dichloroethene 5.00 0.264 5.55 6.22 106 119 1 17.0-153 11.4 27 1,2-Dichloropropane 5.00 U 4.60 5.32 92.0 106 1 30.0-156 14.5 27 1,1-Dichloropropene 5.00 U 5.44 6.17 109 123 1 25.0-158 12.6 27 1,3-Dichloropropane 5.00 U 5.19 5.73 104 115 1 38.0-147 9.89 27 2,2-Dichloropropane 5.00 U 5.05 5.75 101 115 1 24.0-152 13.0 29 Di-isopropyl ether 5.00 U 4.83 5.45 96.6 109 1 21.0-160 12.1 28 Ethylbenzene 5.00 U 4.96 5.66 99.2 113 1 30.0-155 13.2 27 Hexachloro-1,3-butadiene 5.00 U 4.82 5.06 96.4 101 1 20.0-154 4.86 34 Isopropylbenzene 5.00 U 4.98 5.60 99.6 112 1 28.0-157 11.7 27 p-Isopropyltoluene 5.00 U 4.95 5.55 99.0 111 1 30.0-154 11.4 29 2-Butanone (MEK)25.0 3.61 24.7 27.5 84.4 95.6 1 10.0-160 10.7 32 Methylene Chloride 5.00 U 4.73 5.56 94.6 111 1 23.0-144 16.1 28 4-Methyl-2-pentanone (MIBK)25.0 U 24.7 28.4 98.8 114 1 29.0-160 13.9 29 Methyl tert-butyl ether 5.00 U 5.17 5.77 103 115 1 28.0-150 11.0 29 Naphthalene 5.00 U 2.22 3.80 44.4 76.0 1 12.0-156 J3 52.5 35 n-Propylbenzene 5.00 U 4.81 5.42 96.2 108 1 31.0-154 11.9 28 Styrene 5.00 U 4.19 4.84 83.8 96.8 1 33.0-155 14.4 28 1,1,1,2-Tetrachloroethane 5.00 U 4.95 5.66 99.0 113 1 36.0-151 13.4 29 1,1,2,2-Tetrachloroethane 5.00 U 4.93 5.51 98.6 110 1 33.0-150 11.1 28 Tetrachloroethene 5.00 U 5.42 6.04 108 121 1 10.0-160 10.8 27 Toluene 5.00 U 5.02 5.57 100 111 1 26.0-154 10.4 28 1,2,3-Trichlorobenzene 5.00 U 4.27 4.62 85.4 92.4 1 17.0-150 7.87 36 1,2,4-Trichlorobenzene 5.00 U 3.78 4.62 75.6 92.4 1 24.0-150 20.0 33 1,1,1-Trichloroethane 5.00 U 5.67 6.39 113 128 1 23.0-160 11.9 28 1,1,2-Trichloroethane 5.00 U 5.20 5.52 104 110 1 35.0-147 5.97 27 Trichloroethene 5.00 0.272 5.41 6.11 103 117 1 10.0-160 12.2 25 Trichlorofluoromethane 5.00 U 5.81 6.75 116 135 1 17.0-160 15.0 31 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 30 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 30 of 39 QUALITY CONTROL SUMMARYWG2089450 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-04,05,06,07,08 L1630515-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1630515-02 07/06/23 04:09 • (MS) R3945348-4 07/06/23 08:31 • (MSD) R3945348-5 07/06/23 08:53 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% 1,2,3-Trichloropropane 5.00 U 5.33 6.69 107 134 1 34.0-151 22.6 29 1,2,4-Trimethylbenzene 5.00 U 4.75 5.39 95.0 108 1 26.0-154 12.6 27 1,3,5-Trimethylbenzene 5.00 U 4.93 5.67 98.6 113 1 28.0-153 14.0 27 Vinyl chloride 5.00 0.706 5.63 6.64 98.5 119 1 10.0-160 16.5 27 o-Xylene 5.00 U 4.56 5.44 91.2 109 1 45.0-144 17.6 26 m&p-Xylenes 10.0 U 10.1 10.7 101 107 1 43.0-146 5.77 26 (S) Toluene-d8 102 104 80.0-120 (S) 4-Bromofluorobenzene 95.4 97.6 77.0-126 (S) 1,2-Dichloroethane-d4 108 114 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 31 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 31 of 39 QUALITY CONTROL SUMMARYWG2090274 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-03,04,05,06,07,08 Method Blank (MB) (MB) R3945984-2 07/06/23 13:16 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acetone U 11.3 50.0 Acrolein U 2.54 50.0 Acrylonitrile U 0.671 10.0 Benzene U 0.0941 1.00 Bromobenzene U 0.118 1.00 Bromodichloromethane U 0.136 1.00 Bromoform U 0.129 1.00 Bromomethane U 0.605 5.00 n-Butylbenzene U 0.157 1.00 sec-Butylbenzene U 0.125 1.00 tert-Butylbenzene U 0.127 1.00 Carbon tetrachloride U 0.128 1.00 Chlorobenzene U 0.116 1.00 Chlorodibromomethane U 0.140 1.00 Chloroethane U 0.192 5.00 Chloroform U 0.111 5.00 Chloromethane U 0.960 2.50 2-Chlorotoluene U 0.106 1.00 4-Chlorotoluene U 0.114 1.00 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1,2-Dibromoethane U 0.126 1.00 Dibromomethane U 0.122 1.00 1,2-Dichlorobenzene U 0.107 1.00 1,3-Dichlorobenzene U 0.110 1.00 1,4-Dichlorobenzene U 0.120 1.00 Dichlorodifluoromethane U 0.374 5.00 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 1,2-Dichloropropane U 0.149 1.00 1,1-Dichloropropene U 0.142 1.00 1,3-Dichloropropane U 0.110 1.00 2,2-Dichloropropane U 0.161 1.00 Di-isopropyl ether U 0.105 1.00 Ethylbenzene U 0.137 1.00 Hexachloro-1,3-butadiene U 0.337 1.00 Isopropylbenzene U 0.105 1.00 p-Isopropyltoluene U 0.120 1.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 32 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 32 of 39 QUALITY CONTROL SUMMARYWG2090274 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-03,04,05,06,07,08 Method Blank (MB) (MB) R3945984-2 07/06/23 13:16 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l 2-Butanone (MEK)U 1.19 10.0 Methylene Chloride U 0.430 5.00 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 Methyl tert-butyl ether U 0.101 1.00 Naphthalene U 1.00 5.00 n-Propylbenzene U 0.0993 1.00 Styrene U 0.118 1.00 1,1,1,2-Tetrachloroethane U 0.147 1.00 1,1,2,2-Tetrachloroethane U 0.133 1.00 Tetrachloroethene U 0.300 1.00 Toluene U 0.278 1.00 1,2,3-Trichlorobenzene U 0.230 1.00 1,2,4-Trichlorobenzene U 0.481 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Trichlorofluoromethane U 0.160 5.00 1,2,3-Trichloropropane U 0.237 2.50 1,2,4-Trimethylbenzene U 0.322 1.00 1,3,5-Trimethylbenzene U 0.104 1.00 Vinyl chloride U 0.234 1.00 o-Xylene U 0.174 1.00 m&p-Xylenes U 0.430 2.00 (S) Toluene-d8 113 80.0-120 (S) 4-Bromofluorobenzene 109 77.0-126 (S) 1,2-Dichloroethane-d4 109 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3945984-1 07/06/23 12:11 • (LCSD) R3945984-3 07/06/23 14:51 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Acetone 25.0 29.0 24.9 116 99.6 19.0-160 15.2 27 Acrolein 25.0 27.4 24.3 110 97.2 10.0-160 12.0 26 Acrylonitrile 25.0 24.1 21.2 96.4 84.8 55.0-149 12.8 20 Benzene 5.00 5.50 4.73 110 94.6 70.0-123 15.1 20 Bromobenzene 5.00 5.27 4.45 105 89.0 73.0-121 16.9 20 Bromodichloromethane 5.00 5.72 4.75 114 95.0 75.0-120 18.5 20 Bromoform 5.00 5.46 4.67 109 93.4 68.0-132 15.6 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 33 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 33 of 39 QUALITY CONTROL SUMMARYWG2090274 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-03,04,05,06,07,08 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3945984-1 07/06/23 12:11 • (LCSD) R3945984-3 07/06/23 14:51 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Bromomethane 5.00 4.37 3.71 87.4 74.2 10.0-160 16.3 25 n-Butylbenzene 5.00 5.83 4.84 117 96.8 73.0-125 18.6 20 sec-Butylbenzene 5.00 5.64 4.64 113 92.8 75.0-125 19.5 20 tert-Butylbenzene 5.00 5.68 4.84 114 96.8 76.0-124 16.0 20 Carbon tetrachloride 5.00 5.73 4.82 115 96.4 68.0-126 17.3 20 Chlorobenzene 5.00 5.74 4.84 115 96.8 80.0-121 17.0 20 Chlorodibromomethane 5.00 5.49 4.70 110 94.0 77.0-125 15.5 20 Chloroethane 5.00 5.82 4.96 116 99.2 47.0-150 16.0 20 Chloroform 5.00 5.79 4.79 116 95.8 73.0-120 18.9 20 Chloromethane 5.00 4.91 4.24 98.2 84.8 41.0-142 14.6 20 2-Chlorotoluene 5.00 5.67 4.84 113 96.8 76.0-123 15.8 20 4-Chlorotoluene 5.00 5.29 4.43 106 88.6 75.0-122 17.7 20 1,2-Dibromo-3-Chloropropane 5.00 5.12 4.71 102 94.2 58.0-134 8.34 20 1,2-Dibromoethane 5.00 5.25 4.73 105 94.6 80.0-122 10.4 20 Dibromomethane 5.00 5.38 4.58 108 91.6 80.0-120 16.1 20 1,2-Dichlorobenzene 5.00 5.41 4.66 108 93.2 79.0-121 14.9 20 1,3-Dichlorobenzene 5.00 5.41 4.61 108 92.2 79.0-120 16.0 20 1,4-Dichlorobenzene 5.00 5.61 4.38 112 87.6 79.0-120 J3 24.6 20 Dichlorodifluoromethane 5.00 5.31 4.56 106 91.2 51.0-149 15.2 20 1,1-Dichloroethane 5.00 5.55 4.94 111 98.8 70.0-126 11.6 20 1,2-Dichloroethane 5.00 5.64 4.89 113 97.8 70.0-128 14.2 20 1,1-Dichloroethene 5.00 5.69 4.78 114 95.6 71.0-124 17.4 20 cis-1,2-Dichloroethene 5.00 5.86 4.89 117 97.8 73.0-120 18.0 20 trans-1,2-Dichloroethene 5.00 5.62 4.83 112 96.6 73.0-120 15.1 20 1,2-Dichloropropane 5.00 5.64 4.72 113 94.4 77.0-125 17.8 20 1,1-Dichloropropene 5.00 5.70 4.85 114 97.0 74.0-126 16.1 20 1,3-Dichloropropane 5.00 5.62 4.92 112 98.4 80.0-120 13.3 20 2,2-Dichloropropane 5.00 5.97 5.19 119 104 58.0-130 14.0 20 Di-isopropyl ether 5.00 5.69 4.77 114 95.4 58.0-138 17.6 20 Ethylbenzene 5.00 5.48 4.64 110 92.8 79.0-123 16.6 20 Hexachloro-1,3-butadiene 5.00 5.74 4.95 115 99.0 54.0-138 14.8 20 Isopropylbenzene 5.00 5.71 4.75 114 95.0 76.0-127 18.4 20 p-Isopropyltoluene 5.00 5.90 4.91 118 98.2 76.0-125 18.3 20 2-Butanone (MEK)25.0 29.6 25.0 118 100 44.0-160 16.8 20 Methylene Chloride 5.00 5.59 4.79 112 95.8 67.0-120 15.4 20 4-Methyl-2-pentanone (MIBK)25.0 28.5 25.5 114 102 68.0-142 11.1 20 Methyl tert-butyl ether 5.00 5.60 4.79 112 95.8 68.0-125 15.6 20 Naphthalene 5.00 5.08 4.47 102 89.4 54.0-135 12.8 20 n-Propylbenzene 5.00 5.67 4.69 113 93.8 77.0-124 18.9 20 Styrene 5.00 5.20 4.33 104 86.6 73.0-130 18.3 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 34 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 34 of 39 QUALITY CONTROL SUMMARYWG2090274 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-03,04,05,06,07,08 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3945984-1 07/06/23 12:11 • (LCSD) R3945984-3 07/06/23 14:51 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% 1,1,1,2-Tetrachloroethane 5.00 5.61 4.87 112 97.4 75.0-125 14.1 20 1,1,2,2-Tetrachloroethane 5.00 5.36 4.84 107 96.8 65.0-130 10.2 20 Tetrachloroethene 5.00 5.79 4.92 116 98.4 72.0-132 16.2 20 Toluene 5.00 5.69 4.76 114 95.2 79.0-120 17.8 20 1,2,3-Trichlorobenzene 5.00 5.31 4.81 106 96.2 50.0-138 9.88 20 1,2,4-Trichlorobenzene 5.00 5.28 4.55 106 91.0 57.0-137 14.9 20 1,1,1-Trichloroethane 5.00 5.70 4.79 114 95.8 73.0-124 17.3 20 1,1,2-Trichloroethane 5.00 5.44 4.84 109 96.8 80.0-120 11.7 20 Trichloroethene 5.00 5.77 4.79 115 95.8 78.0-124 18.6 20 Trichlorofluoromethane 5.00 5.79 4.56 116 91.2 59.0-147 J3 23.8 20 1,2,3-Trichloropropane 5.00 5.42 4.92 108 98.4 73.0-130 9.67 20 1,2,4-Trimethylbenzene 5.00 5.76 4.71 115 94.2 76.0-121 J3 20.1 20 1,3,5-Trimethylbenzene 5.00 5.74 4.76 115 95.2 76.0-122 18.7 20 Vinyl chloride 5.00 5.52 4.64 110 92.8 67.0-131 17.3 20 o-Xylene 5.00 5.53 4.57 111 91.4 80.0-122 19.0 20 m&p-Xylenes 10.0 10.9 9.22 109 92.2 80.0-122 16.7 20 (S) Toluene-d8 108 108 80.0-120 (S) 4-Bromofluorobenzene 105 107 77.0-126 (S) 1,2-Dichloroethane-d4 110 109 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 35 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 35 of 39 QUALITY CONTROL SUMMARYWG2091060 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1630546-01 Method Blank (MB) (MB) R3946445-3 07/07/23 21:33 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Benzene U 0.0941 1.00 (S) Toluene-d8 113 80.0-120 (S) 4-Bromofluorobenzene 110 77.0-126 (S) 1,2-Dichloroethane-d4 108 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R3946445-1 07/07/23 20:28 • (LCSD) R3946445-2 07/07/23 20:50 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Benzene 5.00 5.10 5.26 102 105 70.0-123 3.09 20 (S) Toluene-d8 110 110 80.0-120 (S) 4-Bromofluorobenzene 108 108 77.0-126 (S) 1,2-Dichloroethane-d4 104 109 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 08:39 36 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 36 of 39 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. 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 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: ATC Group Services LLC L1630546 07/12/23 08:39 37 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 37 of 39 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: ATC Group Services LLC L1630546 07/12/23 08:39 38 of 39 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1630546 07/12/23 12:53 38 of 39