B.08 GFI JBCW_SS012_Analytical Data 5.pdf

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Report of Analysis

AECOM

4016 Salt Pointe Parkway North Charleston, SC 29405 Attention: Doria Cullom

Project Name: JBC Weapons SWMU 12 (SS012)

Project Number: 60444074.0013AC.H

Lot Number:XJ20063

Date Completed:11/28/2022

12/01/2022 5:11 PM

Approved and released by:

Project Manager II: Kathy E. Smith

PACE ANALYTICAL SERVICES, LLC

SC DHEC No: 32010001 NELAC No: E87653 NC DENR No: 329 NC Field Parameters No: 5639

Pace Analytical Services, LLC (formerly Shealy Environmetal Services, Inc.)

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com

Case Narrative

AECOM

Lot Number: XJ20063

This Report of Analysis contains the analytical result(s) for the sample(s) listed on the Sample Summary following this Case Narrative. The sample receiving date is documented in the header information associated with each sample.

All results listed in this report relate only to the samples that are contained within this report. Where sampling is conducted by the client, results relate to the accuracy of the information provided, and as the samples are received.

Sample receipt, sample analysis, and data review have been performed in accordance with the most current approved The NELAC Institute (TNI) standards, the Pace Analytical Services, LLC ("Pace") Laboratory Quality Manual, standard operating procedures (SOPs), and Pace policies. Additionally, the DoD QSM version 5.4 has been followed for these samples. Any exceptions to the TNI standards, the Laboratory Quality Manual, SOPs, the DoD QSM, or policies are qualified on the results page or discussed below.

Pace is a DoD/DOE accredited laboratory; however, the following analyses are currently not listed on our DoD/DOE scope of accreditation: Drinking Water: pH EPA 150.1, Turbidity EPA 18.01, Metals EPA 200.7 & 200.8, Mercury EPA 245.1, Anions EPA 300.0, Cyanide EPA 335.4, Nitrates EPA 353.2, Orthophosphate & Phosphorus EPA 365.1, EDB/DBCP EPA 504.1, HPC SIMPLATE, Color SM 2120 B- 2011, Alkalinity SM 2320 B-2011, Specific Conductance SM 2510 B-2011, Residue-filterable (TDS) SM 2540 C, Calcium Hardness (CaCO2) SM 3500-Ca B-2011, TRC SM 4500 Cl G-2011, pH SM 4500 H=B- 2011, E.Coli, Total Coliform; Non-Potable Water: Metals EPA 200.7, Strontium EPA 200.8, Chlorate EPA 300.0, Cyanide EPA 335.4, Phenolics EPA 420.4, 2-Methyl-4,6-Dinitrophenol EPA 625.1, Propane RSK- 175, Specific Conductance SM 2510 B-2011, Salinity SM250 B, Residue- total SM 2540 B, Sulfite SM 4500 SO32- B-2011, Amenable Cyanide SM 4500-CN- G-2011, BOD & CBOD SM 5210 B, MBAS SM 5540 C-2011; Solid and Chemical Materials: Boron & Titanium SW-846 6010D, Boron, Molybdenum, & Titanium SW-846 6020B, Alcohols & Glycols SW-846 8015C, Pentachlorophenol SW-846 8151A, Ethyl Acetate, Hexane, & n-Hexane SW-846 8260D, SVOC 1,4-Dioxane, 3&4-Methylphenols, 4-Dimethyl aminoazobenzene, 1,4-Naphthoquinone, 3,5-Dinitroaniline, PETN SW-846 8270E, Amenable Cyanide SW-846 9012B; Boron & Titanium SW-846 6010D, Molybdenum SW-846 6020B, Ethylene Glycol SW- 846 8015B, Pentachlorophenol SW-846 8151A, Chloroprene SW-846 8260B, SVOC 1,3,5- Trinitrobenzene, 1,4-Dioxane, 1,4-Naphthoquinone, 1,4-Phenylenediamine, 2,5-Dinitrotoluene, 2,6- Dinitrotoluene, 3-Methylcholanthrene, 4- Aminobiphenyl, 4-Dimethyl aminoazobenzene, 4-Nitroquinoline- 1-oxide, 7,12- Dimethylbenzo(a)anthracene, Chlorobenzilate, Diallate, Ethyl methanesulfonate, Isodrin, Isosafrole, Methyl methanesulfonate, n-Nitrosomethylethylamine, n-Nitrosomorpholine, n- Nitrosopiperidine, Piperonyl butoxide, Pronamide, Safrole, 3,5-Dinitroaniline, PETN SW-846 8270E, Oil & Grease SW-846 9071B.

Pace is a TNI accredited laboratory; however, the following analyses are currently not listed on our TNI scope of accreditation: Drinking Water: VOC (excluding BTEX, MTBE, Naphthalene, & 1,2-dichloroethane) EPA 524.2, E. coli and Total coliforms SM 9223 B-2004, Solid Chemical Material: TOC Walkley-Black, Biological Tissue: All, Non-Potable Water: SGT-HEM EPA 1664B, Silica EPA 200.7, Boron, Calcium, Silicon, Strontium EPA 200.8, Bicarbonate, Carbonate, and Hydroxide Alkalinity SM 2320 B-2011, SM 9221 C E-2006 & SM 9222D-2006, Strontium SW-846 6010D, VOC SM 6200 B-2011, Fecal Coliform Colilert-18.

If you have any questions regarding this report, please contact the Pace Project Manager listed on the cover page.

Pace Analytical Services, LLC (formerly Shealy Environmetal Services, Inc.)

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com

Per client request, '-20221019' was removed from the sample IDs.

Dilutions greater than 5X impact the surrogate recoveries, thus negating their usefulness concerning quality control. The sample results are reported and no corrective action is required.

Volatiles The method blank for analytical batch 58765 contained analyte: Naphthalene greater than the acceptance criteria. The associated samples did not contain detections for the target analyte; therefore, re-extraction and/or re-analysis of samples was not performed. The data has been reported.

The method blank for analytical batch 60222 contained analytes: Hexachlorobutadiene, Naphthalene, 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene greater than the acceptance criteria. The associated samples did not contain detections for the target analytes; therefore, re-extraction and/or re-analysis of samples was not performed. The data has been reported.

Reanalysis of the following samples was performed outside of the analytical holding time for Acetone which failed below CCV criteria in the first analysis: XJ20063-001, XJ20063-002, XJ20063-003, XJ20063- 004, XJ20063-005, XJ20063-006, XJ20063-007, XJ20063-008. All data has been reported.

Anions The following samples were analyzed outside of analytical holding time for Nitrate and Nitrite: XJ20063- 002, XJ20063-003, XJ20063-004, XJ20063-006, XJ20063-007. All samples were also reanalyzed at a dilution and all data has been reported.

The LCS/MS/MSD associated with batch 59584 had Nitrate recovered below the acceptance limits. This demonstrates a low bias on analytical results. Results for this compound in the samples associated with this batch should be considered estimated.

The LCS/MS/MSD associated with batch 59585 had Nitrite recovered below the acceptance limits. This demonstrates a low bias on analytical results. Results for this compound in the samples associated with this batch should be considered estimated.

TOC

The following samples were analyzed outside of analytical holding time due laboratory error: XJ20063-

003, XJ20063-004, XJ20063-006, XJ20063-007.

Dissolved Gases The method blank associated with batches 58888, 60980 had Methane detected at a concentration that was above the MDL but below the PQL. All samples associated with this method blank that have detections for Methane have been flagged with a "B”.

The LCS/LCSD associated with batch 58888 had Methane recovered above the acceptance limits. This demonstrates a high bias on analytical results.

Reanalysis of the following sample was performed outside of the analytical holding time for Methane which failed above CCV, LCS, LCSD and method blank criteria in the first analysis: XJ20063-007. All data has been reported.

The following samples required a dilution for methane which was performed outside of the analytical holding time: XJ20063-002, XJ20063-003, XJ20063-004, XJ20063-006. All data has been reported.

Pace Analytical Services, LLC (formerly Shealy Environmetal Services, Inc.)

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com

Metals The MS/MSD associated with sample XJ20063-002 had Iron recovered outside of the acceptance limits.

The LCS was recovered within the required acceptance limits; therefore, this demonstrates a matrix effect and data quality is not impacted.

DOD PACE ANALYTICAL SERVICES, LLC

Manual Integration SummaryAECOM Lot Number: XJ20063

SC DHEC No: 32010001 NC Field Parameters No: 5639 NELAC No: E87653 NC DENR No: 329

Project Name: JBC Weapons SWMU 12 (SS012) Project Number: 60444074.0013AC.H

Qualifier Technical Justification Qualifier Technical Justification Qualifier Technical Justification Where applicable, analytes for which manual integration occurred have been flagged with the following:

M-01 Split peak M-07 Low fit M-13 ErrorM-02 Peak tailing M-08 Peak not found M-14 BaselineM-03 Incorrect auto integration M-09 Analyte not Identified by the Data System M-15 OtherM-04 Poor chromatography M-10 Analyte misidentified by the Data System M-16 Retention time shiftM-05 Manually assigned peak M-11 Invalid integration M-17 ShoulderingM-06 Wrong isomer M-12 Wrong peak A summary of instances where manual integration occurred is included below:

Method Sample Run Number Parameter Qualifier 9056A XJ20063-002 1 Nitrate - N M-03 9056A XJ20063-002 1 Sulfate M-03 9056A XJ20063-003 1 Sulfate M-03 9056A XJ20063-004 1 Sulfate M-03 9056A XJ20063-004 1 Nitrite - N M-03 8260D XJ20063-004 1 Acetone M-03 9056A XJ20063-006 1 Sulfate M-03 9056A XJ20063-006 1 Nitrite - N M-03 9056A XJ20063-007 1 Nitrate - N M-03 9056A XJ20063-007 1 Sulfate M-05 RSK - 175 XJ20063-007 1 Methane M-03 RSK - 175 XJ20063-007 2 Methane M-03 8260D XJ20063-008 1 Acetone M-03 8260D XJ20063-008 2 Acetone M-01 RSK - 175 XQ58888-001 1 Methane M-03 RSK - 175 XQ60980-001 1 Methane M-03

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Sample SummaryAECOM Lot Number: XJ20063

Project Name: JBC Weapons SWMU 12 (SS012) Project Number: 60444074.0013AC.H

Sample Number Sample ID Matrix Date Sampled Date Received 001 10/19/2022 120012MW-10S-c Aqueous 10/20/2022 002 10/19/2022 120012MW-10S Aqueous 10/20/2022 003 10/19/2022 122512MW-35S Aqueous 10/20/2022 004 10/19/2022 122512MW-35Sa Aqueous 10/20/2022 005 10/19/2022 131012PZ-04 Aqueous 10/20/2022 006 10/19/2022 134012PZ-07 Aqueous 10/20/2022 007 10/19/2022 142512PZ-07-d Aqueous 10/20/2022 008 10/19/2022 150012-IDW-1 Aqueous 10/20/2022

(8 samples)

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Detection SummaryAECOM

Project Name: JBC Weapons SWMU 12 (SS012) Project Number: 60444074.0013AC.H

Sample Sample ID Matrix Parameter Method Result Q Units Page 002 12MW-10S Aqueous Sulfate 9056A 0.96 JM-03 mg/L 16 002 12MW-10S Aqueous TOC SM 5310C- 14 mg/L 16 002 12MW-10S Aqueous Chloroethane 8260D 190 ug/L 17 002 12MW-10S Aqueous 1,1-Dichloroethane 8260D 700 ug/L 17 002 12MW-10S Aqueous 1,2-Dichloroethane 8260D 25 ug/L 17 002 12MW-10S Aqueous 1,1-Dichloroethene 8260D 510 ug/L 17 002 12MW-10S Aqueous cis-1,2-Dichloroethene 8260D 1800 ug/L 17 002 12MW-10S Aqueous Tetrachloroethene 8260D 440 ug/L 18 002 12MW-10S Aqueous 1,1,1-Trichloroethane 8260D 150 ug/L 18 002 12MW-10S Aqueous Trichloroethene 8260D 330 ug/L 18 002 12MW-10S Aqueous Vinyl chloride 8260D 240 ug/L 18 002 12MW-10S Aqueous 1,4-Dioxane 8270E (SIM) 130 Q ug/L 21 002 12MW-10S Aqueous Ethene RSK - 175 40 ug/L 22 002 12MW-10S Aqueous Methane RSK - 175 5100 BH ug/L 23 002 12MW-10S Aqueous Iron 6020B 20000 ug/L 24 002 12MW-10S Aqueous Dissolved Iron 6020B 7400 S ug/L 25 003 12MW-35S Aqueous Alkalinity @ pH 4.5 su SM 2320B- 160 mg CaCO3/L 26 003 12MW-35S Aqueous Sulfate 9056A 0.61 JM-03 mg/L 26 003 12MW-35S Aqueous TOC SM 5310C- 4.0 H mg/L 26 003 12MW-35S Aqueous Chloroethane 8260D 73 ug/L 27 003 12MW-35S Aqueous 1,1-Dichloroethane 8260D 15 ug/L 27 003 12MW-35S Aqueous 1,2-Dichloroethane 8260D 2.3 ug/L 27 003 12MW-35S Aqueous 1,1-Dichloroethene 8260D 6.8 ug/L 27 003 12MW-35S Aqueous cis-1,2-Dichloroethene 8260D 22 ug/L 27 003 12MW-35S Aqueous Toluene 8260D 1.9 ug/L 28 003 12MW-35S Aqueous Trichloroethene 8260D 0.58 J ug/L 28 003 12MW-35S Aqueous Vinyl chloride 8260D 120 ug/L 28 003 12MW-35S Aqueous 1,4-Dioxane 8270E (SIM) 500 Q ug/L 31 003 12MW-35S Aqueous Ethane RSK - 175 6.2 J ug/L 32 003 12MW-35S Aqueous Ethene RSK - 175 46 ug/L 32 003 12MW-35S Aqueous Methane RSK - 175 7900 BH ug/L 33 003 12MW-35S Aqueous Iron 6020B 12000 ug/L 34 003 12MW-35S Aqueous Dissolved Iron 6020B 9600 ug/L 35 004 12MW-35Sa Aqueous Alkalinity @ pH 4.5 su SM 2320B- 140 mg CaCO3/L 36 004 12MW-35Sa Aqueous Sulfate 9056A 1.5 M-03 mg/L 36 004 12MW-35Sa Aqueous TOC SM 5310C- 4.0 H mg/L 36 004 12MW-35Sa Aqueous Chloroethane 8260D 80 ug/L 37 004 12MW-35Sa Aqueous 1,1-Dichloroethane 8260D 21 ug/L 37 004 12MW-35Sa Aqueous 1,2-Dichloroethane 8260D 2.5 ug/L 37 004 12MW-35Sa Aqueous 1,1-Dichloroethene 8260D 9.4 ug/L 37 004 12MW-35Sa Aqueous cis-1,2-Dichloroethene 8260D 31 ug/L 37 004 12MW-35Sa Aqueous Toluene 8260D 2.1 ug/L 38 004 12MW-35Sa Aqueous Trichloroethene 8260D 0.68 J ug/L 38

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Detection Summary (Continued)

Sample Sample ID Matrix Parameter Method Result Q Units Page 004 12MW-35Sa Aqueous Vinyl chloride 8260D 130 ug/L 38 004 12MW-35Sa Aqueous Acetone 8260D 7.5 HJ ug/L 39 004 12MW-35Sa Aqueous 1,4-Dioxane 8270E (SIM) 560 Q ug/L 41 004 12MW-35Sa Aqueous Ethene RSK - 175 87 ug/L 42 004 12MW-35Sa Aqueous Methane RSK - 175 9700 BH ug/L 43 004 12MW-35Sa Aqueous Iron 6020B 9600 ug/L 44 004 12MW-35Sa Aqueous Dissolved Iron 6020B 8600 ug/L 45 005 12PZ-04 Aqueous Acetone 8260D 7.6 HJ ug/L 48 005 12PZ-04 Aqueous 1,4-Dioxane 8270E (SIM) 1.5 ug/L 50 006 12PZ-07 Aqueous Alkalinity @ pH 4.5 su SM 2320B- 390 mg CaCO3/L 51 006 12PZ-07 Aqueous TOC SM 5310C- 4.4 H mg/L 51 006 12PZ-07 Aqueous 1,1-Dichloroethane 8260D 87 ug/L 52 006 12PZ-07 Aqueous 1,2-Dichloroethane 8260D 1.5 ug/L 52 006 12PZ-07 Aqueous 1,1-Dichloroethene 8260D 38 ug/L 52 006 12PZ-07 Aqueous cis-1,2-Dichloroethene 8260D 83 ug/L 52 006 12PZ-07 Aqueous trans-1,2-Dichloroethene 8260D 0.41 J ug/L 52 006 12PZ-07 Aqueous Toluene 8260D 1.2 ug/L 53 006 12PZ-07 Aqueous Trichloroethene 8260D 1.2 ug/L 53 006 12PZ-07 Aqueous Vinyl chloride 8260D 150 ug/L 53 006 12PZ-07 Aqueous Chloroethane 8260D 240 H ug/L 54 006 12PZ-07 Aqueous 1,4-Dioxane 8270E (SIM) 230 ug/L 56 006 12PZ-07 Aqueous Ethene RSK - 175 400 ug/L 57 006 12PZ-07 Aqueous Methane RSK - 175 7100 BH ug/L 58 006 12PZ-07 Aqueous Iron 6020B 16000 ug/L 59 006 12PZ-07 Aqueous Dissolved Iron 6020B 7400 ug/L 60 007 12PZ-07-d Aqueous 1,4-Dioxane 8270E (SIM) 2.0 ug/L 66 007 12PZ-07-d Aqueous Methane RSK - 175 4.1 BHJM-03 ug/L 68 008 12-IDW-1 Aqueous Chloroethane 8260D 9.5 ug/L 71 008 12-IDW-1 Aqueous 1,1-Dichloroethane 8260D 14 ug/L 71 008 12-IDW-1 Aqueous 1,2-Dichloroethane 8260D 0.58 J ug/L 71 008 12-IDW-1 Aqueous 1,1-Dichloroethene 8260D 18 ug/L 71 008 12-IDW-1 Aqueous cis-1,2-Dichloroethene 8260D 35 ug/L 71 008 12-IDW-1 Aqueous Tetrachloroethene 8260D 2.3 ug/L 72 008 12-IDW-1 Aqueous Trichloroethene 8260D 16 ug/L 72 008 12-IDW-1 Aqueous Vinyl chloride 8260D 10 ug/L 72 008 12-IDW-1 Aqueous Acetone 8260D 5.2 HJM-01 ug/L 73 (79 detections)

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Volatile Organic Compounds by GC/MS Description: Matrix:

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S-c

XJ20063-001

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 11/01/2022 0009 BBW 58765

2 5030B 8260D 1 11/16/2022 0144 BBW 60222

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

Acetone 67-64-1 8260D 10 U 1ug/L5.020 10 Benzene 71-43-2 8260D 0.80 U 1ug/L0.401.0 0.80 Bromobenzene 108-86-1 8260D 0.80 U 1ug/L0.401.0 0.80 Bromodichloromethane 75-27-4 8260D 0.80 U 1ug/L0.401.0 0.80 Bromoform 75-25-2 8260D 0.80 U 1ug/L0.401.0 0.80 Bromomethane (Methyl bromide) 74-83-9 8260D 0.80 U 1ug/L0.402.0 0.80 2-Butanone (MEK) 78-93-3 8260D 4.0 U 1ug/L2.010 4.0 n-Butylbenzene 104-51-8 8260D 0.80 U 1ug/L0.401.0 0.80 Carbon disulfide 75-15-0 8260D 0.80 U 1ug/L0.401.0 0.80 Carbon tetrachloride 56-23-5 8260D 0.80 U 1ug/L0.401.0 0.80 Chlorobenzene 108-90-7 8260D 0.80 U 1ug/L0.401.0 0.80 Chloroethane 75-00-3 8260D 0.80 U 1ug/L0.402.0 0.80 Chloroform 67-66-3 8260D 0.80 U 1ug/L0.401.0 0.80 Chloromethane (Methyl chloride) 74-87-3 8260D 1.0 U 1ug/L0.502.0 1.0 2-Chlorotoluene 95-49-8 8260D 0.80 U 1ug/L0.401.0 0.80 4-Chlorotoluene 106-43-4 8260D 0.80 U 1ug/L0.401.0 0.80 1,2-Dibromo-3-chloropropane (DBCP) 96-12-8 8260D 0.80 U 1ug/L0.401.0 0.80 Dibromochloromethane 124-48-1 8260D 0.80 U 1ug/L0.401.0 0.80 1,2-Dibromoethane (EDB) 106-93-4 8260D 0.80 U 1ug/L0.401.0 0.80 Dibromomethane (Methylene bromide) 74-95-3 8260D 0.80 U 1ug/L0.401.0 0.80 1,2-Dichlorobenzene 95-50-1 8260D 0.80 U 1ug/L0.401.0 0.80 1,3-Dichlorobenzene 541-73-1 8260D 0.80 U 1ug/L0.401.0 0.80 1,4-Dichlorobenzene 106-46-7 8260D 0.80 U 1ug/L0.401.0 0.80 Dichlorodifluoromethane 75-71-8 8260D 1.2 U 1ug/L0.602.0 1.2 1,1-Dichloroethane 75-34-3 8260D 0.80 U 1ug/L0.401.0 0.80 1,2-Dichloroethane 107-06-2 8260D 0.80 U 1ug/L0.401.0 0.80 1,1-Dichloroethene 75-35-4 8260D 0.80 U 1ug/L0.401.0 0.80 cis-1,2-Dichloroethene 156-59-2 8260D 0.80 U 1ug/L0.401.0 0.80 trans-1,2-Dichloroethene 156-60-5 8260D 0.80 U 1ug/L0.401.0 0.80 1,2-Dichloropropane 78-87-5 8260D 0.80 U 1ug/L0.401.0 0.80 cis-1,3-Dichloropropene 10061-01-5 8260D 0.80 U 1ug/L0.401.0 0.80 trans-1,3-Dichloropropene 10061-02-6 8260D 0.80 U 1ug/L0.401.0 0.80 Ethylbenzene 100-41-4 8260D 0.80 U 1ug/L0.401.0 0.80 Hexachlorobutadiene 87-68-3 8260D 0.80 U 1ug/L0.401.0 0.80 2-Hexanone 591-78-6 8260D 4.0 U 1ug/L2.010 4.0 Isopropylbenzene 98-82-8 8260D 0.80 U 1ug/L0.401.0 0.80 Methyl tertiary butyl ether (MTBE) 1634-04-4 8260D 0.80 U 1ug/L0.401.0 0.80 4-Methyl-2-pentanone 108-10-1 8260D 4.0 U 1ug/L2.010 4.0 Methylene chloride 75-09-2 8260D 0.80 U 1ug/L0.401.0 0.80 Naphthalene 91-20-3 8260D 0.80 U 1ug/L0.401.0 0.80 n-Propylbenzene 103-65-1 8260D 0.80 U 1ug/L0.401.0 0.80 Styrene 100-42-5 8260D 0.82 U 1ug/L0.411.0 0.82 1,1,1,2-Tetrachloroethane 630-20-6 8260D 0.80 U 1ug/L0.401.0 0.80

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S-c

XJ20063-001

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 11/01/2022 0009 BBW 58765

2 5030B 8260D 1 11/16/2022 0144 BBW 60222

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

1,1,2,2-Tetrachloroethane 79-34-5 8260D 0.80 U 1ug/L0.401.0 0.80 Tetrachloroethene 127-18-4 8260D 0.80 U 1ug/L0.401.0 0.80 Toluene 108-88-3 8260D 0.80 U 1ug/L0.401.0 0.80 1,2,3-Trichlorobenzene 87-61-6 8260D 0.80 U 1ug/L0.401.0 0.80 1,2,4-Trichlorobenzene 120-82-1 8260D 0.80 U 1ug/L0.401.0 0.80 1,1,1-Trichloroethane 71-55-6 8260D 0.80 U 1ug/L0.401.0 0.80 1,1,2-Trichloroethane 79-00-5 8260D 0.80 U 1ug/L0.401.0 0.80 Trichloroethene 79-01-6 8260D 0.80 U 1ug/L0.401.0 0.80 Trichlorofluoromethane 75-69-4 8260D 0.80 U 1ug/L0.401.0 0.80 1,2,3-Trichloropropane 96-18-4 8260D 0.80 U 1ug/L0.401.0 0.80 1,2,4-Trimethylbenzene 95-63-6 8260D 0.80 U 1ug/L0.401.0 0.80 1,3,5-Trimethylbenzene 108-67-8 8260D 0.80 U 1ug/L0.401.0 0.80 Vinyl chloride 75-01-4 8260D 0.80 U 1ug/L0.401.0 0.80 m+p - Xylenes 179601-23-1 8260D 0.80 U 1ug/L0.401.0 0.80 o - Xylenes 95-47-6 8260D 0.80 U 1ug/L0.401.0 0.80

AcceptanceAcceptance Run 2Run 1Surrogate Q % Recovery Limits % Recovery LimitsQ Bromofluorobenzene 102 85-114 H 97 85-114 Dibromofluoromethane 93 80-119 H 100 80-119 1,2-Dichloroethane-d4 96 81-118 H 96 81-118 Toluene-d8 103 89-112 H 97 89-112

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S-c

XJ20063-001

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 11/01/2022 0009 BBW 58765

2 5030B 8260D 1 11/16/2022 0144 BBW 60222

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

Acetone 67-64-1 8260D 10 UH 2ug/L5.020 10 Benzene 71-43-2 8260D 0.80 UH 2ug/L0.401.0 0.80 Bromobenzene 108-86-1 8260D 0.80 UH 2ug/L0.401.0 0.80 Bromodichloromethane 75-27-4 8260D 0.80 UH 2ug/L0.401.0 0.80 Bromoform 75-25-2 8260D 0.80 UH 2ug/L0.401.0 0.80 Bromomethane (Methyl bromide) 74-83-9 8260D 0.80 UH 2ug/L0.402.0 0.80 2-Butanone (MEK) 78-93-3 8260D 4.0 UH 2ug/L2.010 4.0 n-Butylbenzene 104-51-8 8260D 0.80 UH 2ug/L0.401.0 0.80 Carbon disulfide 75-15-0 8260D 0.80 UH 2ug/L0.401.0 0.80 Carbon tetrachloride 56-23-5 8260D 0.80 UH 2ug/L0.401.0 0.80 Chlorobenzene 108-90-7 8260D 0.80 UH 2ug/L0.401.0 0.80 Chloroethane 75-00-3 8260D 0.80 UH 2ug/L0.402.0 0.80 Chloroform 67-66-3 8260D 0.80 UH 2ug/L0.401.0 0.80 Chloromethane (Methyl chloride) 74-87-3 8260D 1.0 UH 2ug/L0.502.0 1.0 2-Chlorotoluene 95-49-8 8260D 0.80 UH 2ug/L0.401.0 0.80 4-Chlorotoluene 106-43-4 8260D 0.80 UH 2ug/L0.401.0 0.80 1,2-Dibromo-3-chloropropane (DBCP) 96-12-8 8260D 0.80 UH 2ug/L0.401.0 0.80 Dibromochloromethane 124-48-1 8260D 0.80 UH 2ug/L0.401.0 0.80 1,2-Dibromoethane (EDB) 106-93-4 8260D 0.80 UH 2ug/L0.401.0 0.80 Dibromomethane (Methylene bromide) 74-95-3 8260D 0.80 UH 2ug/L0.401.0 0.80 1,2-Dichlorobenzene 95-50-1 8260D 0.80 UH 2ug/L0.401.0 0.80 1,3-Dichlorobenzene 541-73-1 8260D 0.80 UH 2ug/L0.401.0 0.80 1,4-Dichlorobenzene 106-46-7 8260D 0.80 UH 2ug/L0.401.0 0.80 Dichlorodifluoromethane 75-71-8 8260D 1.2 UH 2ug/L0.602.0 1.2 1,1-Dichloroethane 75-34-3 8260D 0.80 UH 2ug/L0.401.0 0.80 1,2-Dichloroethane 107-06-2 8260D 0.80 UH 2ug/L0.401.0 0.80 1,1-Dichloroethene 75-35-4 8260D 0.80 UH 2ug/L0.401.0 0.80 cis-1,2-Dichloroethene 156-59-2 8260D 0.80 UH 2ug/L0.401.0 0.80 trans-1,2-Dichloroethene 156-60-5 8260D 0.80 UH 2ug/L0.401.0 0.80 1,2-Dichloropropane 78-87-5 8260D 0.80 UH 2ug/L0.401.0 0.80 cis-1,3-Dichloropropene 10061-01-5 8260D 0.80 UH 2ug/L0.401.0 0.80 trans-1,3-Dichloropropene 10061-02-6 8260D 0.80 UH 2ug/L0.401.0 0.80 Ethylbenzene 100-41-4 8260D 0.80 UH 2ug/L0.401.0 0.80 Hexachlorobutadiene 87-68-3 8260D 0.80 UH 2ug/L0.401.0 0.80 2-Hexanone 591-78-6 8260D 4.0 UH 2ug/L2.010 4.0 Isopropylbenzene 98-82-8 8260D 0.80 UH 2ug/L0.401.0 0.80 Methyl tertiary butyl ether (MTBE) 1634-04-4 8260D 0.80 UH 2ug/L0.401.0 0.80 4-Methyl-2-pentanone 108-10-1 8260D 4.0 UH 2ug/L2.010 4.0 Methylene chloride 75-09-2 8260D 0.80 UH 2ug/L0.401.0 0.80 Naphthalene 91-20-3 8260D 0.80 UH 2ug/L0.401.0 0.80 n-Propylbenzene 103-65-1 8260D 0.80 UH 2ug/L0.401.0 0.80 Styrene 100-42-5 8260D 0.82 UH 2ug/L0.411.0 0.82 1,1,1,2-Tetrachloroethane 630-20-6 8260D 0.80 UH 2ug/L0.401.0 0.80

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S-c

XJ20063-001

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 11/01/2022 0009 BBW 58765

2 5030B 8260D 1 11/16/2022 0144 BBW 60222

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

1,1,2,2-Tetrachloroethane 79-34-5 8260D 0.80 UH 2ug/L0.401.0 0.80 Tetrachloroethene 127-18-4 8260D 0.80 UH 2ug/L0.401.0 0.80 Toluene 108-88-3 8260D 0.80 UH 2ug/L0.401.0 0.80 1,2,3-Trichlorobenzene 87-61-6 8260D 0.80 UH 2ug/L0.401.0 0.80 1,2,4-Trichlorobenzene 120-82-1 8260D 0.80 UH 2ug/L0.401.0 0.80 1,1,1-Trichloroethane 71-55-6 8260D 0.80 UH 2ug/L0.401.0 0.80 1,1,2-Trichloroethane 79-00-5 8260D 0.80 UH 2ug/L0.401.0 0.80 Trichloroethene 79-01-6 8260D 0.80 UH 2ug/L0.401.0 0.80 Trichlorofluoromethane 75-69-4 8260D 0.80 UH 2ug/L0.401.0 0.80 1,2,3-Trichloropropane 96-18-4 8260D 0.80 UH 2ug/L0.401.0 0.80 1,2,4-Trimethylbenzene 95-63-6 8260D 0.80 UH 2ug/L0.401.0 0.80 1,3,5-Trimethylbenzene 108-67-8 8260D 0.80 UH 2ug/L0.401.0 0.80 Vinyl chloride 75-01-4 8260D 0.80 UH 2ug/L0.401.0 0.80 m+p - Xylenes 179601-23-1 8260D 0.80 UH 2ug/L0.401.0 0.80 o - Xylenes 95-47-6 8260D 0.80 UH 2ug/L0.401.0 0.80

AcceptanceAcceptance Run 2Run 1Surrogate Q % Recovery Limits % Recovery LimitsQ Bromofluorobenzene 102 85-114 H 97 85-114 Dibromofluoromethane 93 80-119 H 100 80-119 1,2-Dichloroethane-d4 96 81-118 H 96 81-118 Toluene-d8 103 89-112 H 97 89-112

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Inorganic non-metals

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S

XJ20063-002

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 (Alkalinity @) SM 2320B-2011 1 10/24/2022 1847 TAD 58012

1 (Nitrate - N) 9056A 1 10/21/2022 2018 MSG 59584 2 (Nitrate - N) 9056A 10 11/22/2022 2354 SJL 60887 1 (Nitrite - N) 9056A 1 10/21/2022 2018 MSG 59585 2 (Nitrite - N) 9056A 10 11/22/2022 2354 SJL 60886 1 (Sulfate) 9056A 1 10/21/2022 2018 MSG 59587

1 (TOC) SM 5310C-2014 1 11/16/2022 0158 CMM 60131

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Alkalinity @ pH 4.5 su SM 2320B-2011 20 U 1mg CaCO3/L2020 20 Nitrate - N 9056A 0.010 UHM-03 1mg/L0.00500.020 0.010 Sulfate 9056A 0.96 JM-03 1mg/L0.251.0 0.50 Nitrite - N 9056A 0.010 UHL 1mg/L0.00500.020 0.010 Nitrate - N 9056A 0.10 UH 2mg/L0.0500.20 0.10 TOC SM 5310C-2014 14 1mg/L0.602.0 1.5 Nitrite - N 9056A 0.10 UH 2mg/L0.0500.20 0.10

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S

XJ20063-002

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 10 11/01/2022 0504 BBW 58765

2 5030B 8260D 10 11/16/2022 0558 BBW 60222

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

Acetone 67-64-1 8260D 100 U 1ug/L50200 100 Benzene 71-43-2 8260D 8.0 U 1ug/L4.010 8.0 Bromobenzene 108-86-1 8260D 8.0 U 1ug/L4.010 8.0 Bromodichloromethane 75-27-4 8260D 8.0 U 1ug/L4.010 8.0 Bromoform 75-25-2 8260D 8.0 U 1ug/L4.010 8.0 Bromomethane (Methyl bromide) 74-83-9 8260D 8.0 U 1ug/L4.020 8.0 2-Butanone (MEK) 78-93-3 8260D 40 U 1ug/L20100 40 n-Butylbenzene 104-51-8 8260D 8.0 U 1ug/L4.010 8.0 Carbon disulfide 75-15-0 8260D 8.0 U 1ug/L4.010 8.0 Carbon tetrachloride 56-23-5 8260D 8.0 U 1ug/L4.010 8.0 Chlorobenzene 108-90-7 8260D 8.0 U 1ug/L4.010 8.0 Chloroethane 75-00-3 8260D 190 1ug/L4.020 8.0 Chloroform 67-66-3 8260D 8.0 U 1ug/L4.010 8.0 Chloromethane (Methyl chloride) 74-87-3 8260D 10 U 1ug/L5.020 10 2-Chlorotoluene 95-49-8 8260D 8.0 U 1ug/L4.010 8.0 4-Chlorotoluene 106-43-4 8260D 8.0 U 1ug/L4.010 8.0 1,2-Dibromo-3-chloropropane (DBCP) 96-12-8 8260D 8.0 U 1ug/L4.010 8.0 Dibromochloromethane 124-48-1 8260D 8.0 U 1ug/L4.010 8.0 1,2-Dibromoethane (EDB) 106-93-4 8260D 8.0 U 1ug/L4.010 8.0 Dibromomethane (Methylene bromide) 74-95-3 8260D 8.0 U 1ug/L4.010 8.0 1,2-Dichlorobenzene 95-50-1 8260D 8.0 U 1ug/L4.010 8.0 1,3-Dichlorobenzene 541-73-1 8260D 8.0 U 1ug/L4.010 8.0 1,4-Dichlorobenzene 106-46-7 8260D 8.0 U 1ug/L4.010 8.0 Dichlorodifluoromethane 75-71-8 8260D 12 U 1ug/L6.020 12 1,1-Dichloroethane 75-34-3 8260D 700 1ug/L4.010 8.0 1,2-Dichloroethane 107-06-2 8260D 25 1ug/L4.010 8.0 1,1-Dichloroethene 75-35-4 8260D 510 1ug/L4.010 8.0 cis-1,2-Dichloroethene 156-59-2 8260D 1800 1ug/L4.010 8.0 trans-1,2-Dichloroethene 156-60-5 8260D 8.0 U 1ug/L4.010 8.0 1,2-Dichloropropane 78-87-5 8260D 8.0 U 1ug/L4.010 8.0 cis-1,3-Dichloropropene 10061-01-5 8260D 8.0 U 1ug/L4.010 8.0 trans-1,3-Dichloropropene 10061-02-6 8260D 8.0 U 1ug/L4.010 8.0 Ethylbenzene 100-41-4 8260D 8.0 U 1ug/L4.010 8.0 Hexachlorobutadiene 87-68-3 8260D 8.0 U 1ug/L4.010 8.0 2-Hexanone 591-78-6 8260D 40 U 1ug/L20100 40 Isopropylbenzene 98-82-8 8260D 8.0 U 1ug/L4.010 8.0 Methyl tertiary butyl ether (MTBE) 1634-04-4 8260D 8.0 U 1ug/L4.010 8.0 4-Methyl-2-pentanone 108-10-1 8260D 40 U 1ug/L20100 40 Methylene chloride 75-09-2 8260D 8.0 U 1ug/L4.010 8.0 Naphthalene 91-20-3 8260D 8.0 U 1ug/L4.010 8.0 n-Propylbenzene 103-65-1 8260D 8.0 U 1ug/L4.010 8.0 Styrene 100-42-5 8260D 8.2 U 1ug/L4.110 8.2 1,1,1,2-Tetrachloroethane 630-20-6 8260D 8.0 U 1ug/L4.010 8.0

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S

XJ20063-002

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 10 11/01/2022 0504 BBW 58765

2 5030B 8260D 10 11/16/2022 0558 BBW 60222

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

1,1,2,2-Tetrachloroethane 79-34-5 8260D 8.0 U 1ug/L4.010 8.0 Tetrachloroethene 127-18-4 8260D 440 1ug/L4.010 8.0 Toluene 108-88-3 8260D 8.0 U 1ug/L4.010 8.0 1,2,3-Trichlorobenzene 87-61-6 8260D 8.0 U 1ug/L4.010 8.0 1,2,4-Trichlorobenzene 120-82-1 8260D 8.0 U 1ug/L4.010 8.0 1,1,1-Trichloroethane 71-55-6 8260D 150 1ug/L4.010 8.0 1,1,2-Trichloroethane 79-00-5 8260D 8.0 U 1ug/L4.010 8.0 Trichloroethene 79-01-6 8260D 330 1ug/L4.010 8.0 Trichlorofluoromethane 75-69-4 8260D 8.0 U 1ug/L4.010 8.0 1,2,3-Trichloropropane 96-18-4 8260D 8.0 U 1ug/L4.010 8.0 1,2,4-Trimethylbenzene 95-63-6 8260D 8.0 U 1ug/L4.010 8.0 1,3,5-Trimethylbenzene 108-67-8 8260D 8.0 U 1ug/L4.010 8.0 Vinyl chloride 75-01-4 8260D 240 1ug/L4.010 8.0 m+p - Xylenes 179601-23-1 8260D 8.0 U 1ug/L4.010 8.0 o - Xylenes 95-47-6 8260D 8.0 U 1ug/L4.010 8.0

AcceptanceAcceptance Run 2Run 1Surrogate Q % Recovery Limits % Recovery LimitsQ Bromofluorobenzene 98 85-114 H 95 85-114 Dibromofluoromethane 93 80-119 H 97 80-119 1,2-Dichloroethane-d4 93 81-118 H 92 81-118 Toluene-d8 99 89-112 H 97 89-112

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S

XJ20063-002

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 10 11/01/2022 0504 BBW 58765

2 5030B 8260D 10 11/16/2022 0558 BBW 60222

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

Acetone 67-64-1 8260D 100 UH 2ug/L50200 100 Benzene 71-43-2 8260D 8.0 UH 2ug/L4.010 8.0 Bromobenzene 108-86-1 8260D 8.0 UH 2ug/L4.010 8.0 Bromodichloromethane 75-27-4 8260D 8.0 UH 2ug/L4.010 8.0 Bromoform 75-25-2 8260D 8.0 UH 2ug/L4.010 8.0 Bromomethane (Methyl bromide) 74-83-9 8260D 8.0 UH 2ug/L4.020 8.0 2-Butanone (MEK) 78-93-3 8260D 40 UH 2ug/L20100 40 n-Butylbenzene 104-51-8 8260D 8.0 UH 2ug/L4.010 8.0 Carbon disulfide 75-15-0 8260D 8.0 UH 2ug/L4.010 8.0 Carbon tetrachloride 56-23-5 8260D 8.0 UH 2ug/L4.010 8.0 Chlorobenzene 108-90-7 8260D 8.0 UH 2ug/L4.010 8.0 Chloroethane 75-00-3 8260D 190 H 2ug/L4.020 8.0 Chloroform 67-66-3 8260D 8.0 UH 2ug/L4.010 8.0 Chloromethane (Methyl chloride) 74-87-3 8260D 10 UH 2ug/L5.020 10 2-Chlorotoluene 95-49-8 8260D 8.0 UH 2ug/L4.010 8.0 4-Chlorotoluene 106-43-4 8260D 8.0 UH 2ug/L4.010 8.0 1,2-Dibromo-3-chloropropane (DBCP) 96-12-8 8260D 8.0 UH 2ug/L4.010 8.0 Dibromochloromethane 124-48-1 8260D 8.0 UH 2ug/L4.010 8.0 1,2-Dibromoethane (EDB) 106-93-4 8260D 8.0 UH 2ug/L4.010 8.0 Dibromomethane (Methylene bromide) 74-95-3 8260D 8.0 UH 2ug/L4.010 8.0 1,2-Dichlorobenzene 95-50-1 8260D 8.0 UH 2ug/L4.010 8.0 1,3-Dichlorobenzene 541-73-1 8260D 8.0 UH 2ug/L4.010 8.0 1,4-Dichlorobenzene 106-46-7 8260D 8.0 UH 2ug/L4.010 8.0 Dichlorodifluoromethane 75-71-8 8260D 12 UH 2ug/L6.020 12 1,1-Dichloroethane 75-34-3 8260D 680 H 2ug/L4.010 8.0 1,2-Dichloroethane 107-06-2 8260D 24 H 2ug/L4.010 8.0 1,1-Dichloroethene 75-35-4 8260D 510 H 2ug/L4.010 8.0 cis-1,2-Dichloroethene 156-59-2 8260D 1700 H 2ug/L4.010 8.0 trans-1,2-Dichloroethene 156-60-5 8260D 8.0 UH 2ug/L4.010 8.0 1,2-Dichloropropane 78-87-5 8260D 8.0 UH 2ug/L4.010 8.0 cis-1,3-Dichloropropene 10061-01-5 8260D 8.0 UH 2ug/L4.010 8.0 trans-1,3-Dichloropropene 10061-02-6 8260D 8.0 UH 2ug/L4.010 8.0 Ethylbenzene 100-41-4 8260D 8.0 UH 2ug/L4.010 8.0 Hexachlorobutadiene 87-68-3 8260D 8.0 UH 2ug/L4.010 8.0 2-Hexanone 591-78-6 8260D 40 UH 2ug/L20100 40 Isopropylbenzene 98-82-8 8260D 8.0 UH 2ug/L4.010 8.0 Methyl tertiary butyl ether (MTBE) 1634-04-4 8260D 8.0 UH 2ug/L4.010 8.0 4-Methyl-2-pentanone 108-10-1 8260D 40 UH 2ug/L20100 40 Methylene chloride 75-09-2 8260D 8.0 UH 2ug/L4.010 8.0 Naphthalene 91-20-3 8260D 8.0 UH 2ug/L4.010 8.0 n-Propylbenzene 103-65-1 8260D 8.0 UH 2ug/L4.010 8.0 Styrene 100-42-5 8260D 8.2 UH 2ug/L4.110 8.2 1,1,1,2-Tetrachloroethane 630-20-6 8260D 8.0 UH 2ug/L4.010 8.0

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S

XJ20063-002

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 10 11/01/2022 0504 BBW 58765

2 5030B 8260D 10 11/16/2022 0558 BBW 60222

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

1,1,2,2-Tetrachloroethane 79-34-5 8260D 8.0 UH 2ug/L4.010 8.0 Tetrachloroethene 127-18-4 8260D 420 H 2ug/L4.010 8.0 Toluene 108-88-3 8260D 8.0 UH 2ug/L4.010 8.0 1,2,3-Trichlorobenzene 87-61-6 8260D 8.0 UH 2ug/L4.010 8.0 1,2,4-Trichlorobenzene 120-82-1 8260D 8.0 UH 2ug/L4.010 8.0 1,1,1-Trichloroethane 71-55-6 8260D 160 H 2ug/L4.010 8.0 1,1,2-Trichloroethane 79-00-5 8260D 8.0 UH 2ug/L4.010 8.0 Trichloroethene 79-01-6 8260D 320 H 2ug/L4.010 8.0 Trichlorofluoromethane 75-69-4 8260D 8.0 UH 2ug/L4.010 8.0 1,2,3-Trichloropropane 96-18-4 8260D 8.0 UH 2ug/L4.010 8.0 1,2,4-Trimethylbenzene 95-63-6 8260D 8.0 UH 2ug/L4.010 8.0 1,3,5-Trimethylbenzene 108-67-8 8260D 8.0 UH 2ug/L4.010 8.0 Vinyl chloride 75-01-4 8260D 240 H 2ug/L4.010 8.0 m+p - Xylenes 179601-23-1 8260D 8.0 UH 2ug/L4.010 8.0 o - Xylenes 95-47-6 8260D 8.0 UH 2ug/L4.010 8.0

AcceptanceAcceptance Run 2Run 1Surrogate Q % Recovery Limits % Recovery LimitsQ Bromofluorobenzene 98 85-114 H 95 85-114 Dibromofluoromethane 93 80-119 H 97 80-119 1,2-Dichloroethane-d4 93 81-118 H 92 81-118 Toluene-d8 99 89-112 H 97 89-112

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Semivolatile Organic Compounds by GC/MS (SIM)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S

XJ20063-002

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 3520C 8270E (SIM) 100 11/01/2022 1535 JCG 10/24/2022 1446 57949

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 1,4-Dioxane 123-91-1 8270E (SIM) 130 Q 1ug/L6.820 14

AcceptanceRun 1Surrogate Q % Recovery Limits 1,4-Dioxane-d8 N 482 15-120

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Dissolved Gases

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S

XJ20063-002

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 RSK - 175 1 11/01/2022 2239 BBW 58888

2 RSK - 175 10 11/23/2022 2205 BBW 60980

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

Ethane 74-84-0 RSK - 175 5.0 U 1ug/L2.510 5.0 Ethene 74-85-1 RSK - 175 40 1ug/L2.510 5.0 Methane 74-82-8 RSK - 175 6800 BEL 1ug/L2.510 5.0

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S

XJ20063-002

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 RSK - 175 1 11/01/2022 2239 BBW 58888

2 RSK - 175 10 11/23/2022 2205 BBW 60980

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

Ethane 74-84-0 RSK - 175 50 UH 2ug/L25100 50 Ethene 74-85-1 RSK - 175 26 HJ 2ug/L25100 50 Methane 74-82-8 RSK - 175 5100 BH 2ug/L25100 50

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Metals

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

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Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 3005A 6020B 1 11/10/2022 1940 BNW 11/08/2022 1447 57920

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Iron 7439-89-6 6020B 20000 1ug/L1350 25

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-10S

XJ20063-002

10/19/2022 1200 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 3005A 6020B 1 11/13/2022 1527 BNW 10/25/2022 1837 58042

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Dissolved Iron 7439-89-6 6020B 7400 S 1ug/L1350 25

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-35S

XJ20063-003

10/19/2022 1225 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 (Alkalinity @) SM 2320B-2011 1 10/24/2022 1853 TAD 58012

1 (Nitrate - N) 9056A 1 10/21/2022 2037 MSG 59584 2 (Nitrate - N) 9056A 10 11/23/2022 0013 SJL 60887 1 (Nitrite - N) 9056A 1 10/21/2022 2037 MSG 59585 2 (Nitrite - N) 9056A 10 11/23/2022 0013 SJL 60886 1 (Sulfate) 9056A 1 10/21/2022 2037 MSG 59587

1 (TOC) SM 5310C-2014 1 11/17/2022 1141 CMM 60291

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Alkalinity @ pH 4.5 su SM 2320B-2011 160 1mg CaCO3/L2020 20 Nitrate - N 9056A 0.010 UH 1mg/L0.00500.020 0.010 Sulfate 9056A 0.61 JM-03 1mg/L0.251.0 0.50 Nitrite - N 9056A 0.010 UHL 1mg/L0.00500.020 0.010 Nitrate - N 9056A 0.10 UH 2mg/L0.0500.20 0.10 TOC SM 5310C-2014 4.0 H 1mg/L0.602.0 1.5 Nitrite - N 9056A 0.10 UH 2mg/L0.0500.20 0.10

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure

DL = Detection Limit LOD = Limit of DetectionW = Reported on wet weight basis

106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.comPace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-35S

XJ20063-003

10/19/2022 1225 10/20/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 11/01/2022 0033 BBW 58765

2 5030B 8260D 1 11/16/2022 0207 BBW 60222

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

Acetone 67-64-1 8260D 10 U 1ug/L5.020 10 Benzene 71-43-2 8260D 0.80 U 1ug/L0.401.0 0.80 Bromobenzene 108-86-1 8260D 0.80 U 1ug/L0.401.0 0.80 Bromodichloromethane 75-27-4 8260D 0.80 U 1ug/L0.401.0 0.80 Bromoform 75-25-2 8260D 0.80 U 1ug/L0.401.0 0.80 Bromomethane (Methyl bromide) 74-83-9 8260D 0.80 U 1ug/L0.402.0 0.80 2-Butanone (MEK) 78-93-3 8260D 4.0 U 1ug/L2.010 4.0 n-Butylbenzene 104-51-8 8260D 0.80 U 1ug/L0.401.0 0.80 Carbon disulfide 75-15-0 8260D 0.80 U 1ug/L0.401.0 0.80 Carbon tetrachloride 56-23-5 8260D 0.80 U 1ug/L0.401.0 0.80 Chlorobenzene 108-90-7 8260D 0.80 U 1ug/L0.401.0 0.80 Chloroethane 75-00-3 8260D 73 1ug/L0.402.0 0.80 Chloroform 67-66-3 8260D 0.80 U 1ug/L0.401.0 0.80 Chloromethane (Methyl chloride) 74-87-3 8260D 1.0 U 1ug/L0.502.0 1.0 2-Chlorotoluene 95-49-8 8260D 0.80 U 1ug/L0.401.0 0.80 4-Chlorotoluene 106-43-4 8260D 0.80 U 1ug/L0.401.0 0.80 1,2-Dibromo-3-chloropropane (DBCP) 96-12-8 8260D 0.80 U 1ug/L0.401.0 0.80 Dibromochloromethane 124-48-1 8260D 0.80 U 1ug/L0.401.0 0.80 1,2-Dibromoethane (EDB) 106-93-4 8260D 0.80 U 1ug/L0.401.0 0.80 Dibromomethane (Methylene bromide) 74-95-3 8260D 0.80 U 1ug/L0.401.0 0.80 1,2-Dichlorobenzene 95-50-1 8260D 0.80 U 1ug/L0.401.0 0.80 1,3-Dichlorobenzene 541-73-1 8260D 0.80 U 1ug/L0.401.0 0.80 1,4-Dichlorobenzene 106-46-7 8260D 0.80 U 1ug/L0.401.0 0.80 Dichlorodifluoromethane 75-71-8 8260D 1.2 U 1ug/L0.602.0 1.2 1,1-Dichloroethane 75-34-3 8260D 15 1ug/L0.401.0 0.80 1,2-Dichloroethane 107-06-2 8260D 2.3 1ug/L0.401.0 0.80 1,1-Dichloroethene 75-35-4 8260D 6.8 1ug/L0.401.0 0.80 cis-1,2-Dichloroethene 156-59-2 8260D 22 1ug/L0.401.0 0.80 trans-1,2-Dichloroethene 156-60-5 8260D 0.80 U 1ug/L0.401.0 0.80 1,2-Dichloropropane 78-87-5 8260D 0.80 U 1ug/L0.401.0 0.80 cis-1,3-Dichloropropene 10061-01-5 8260D 0.80 U 1ug/L0.401.0 0.80 trans-1,3-Dichloropropene 10061-02-6 8260D 0.80 U 1ug/L0.401.0 0.80 Ethylbenzene 100-41-4 8260D 0.80 U 1ug/L0.401.0 0.80 Hexachlorobutadiene 87-68-3 8260D 0.80 U 1ug/L0.401.0 0.80 2-Hexanone 591-78-6 8260D 4.0 U 1ug/L2.010 4.0 Isopropylbenzene 98-82-8 8260D 0.80 U 1ug/L0.401.0 0.80 Methyl tertiary butyl ether (MTBE) 1634-04-4 8260D 0.80 U 1ug/L0.401.0 0.80 4-Methyl-2-pentanone 108-10-1 8260D 4.0 U 1ug/L2.010 4.0 Methylene chloride 75-09-2 8260D 0.80 U 1ug/L0.401.0 0.80 Naphthalene 91-20-3 8260D 0.80 U 1ug/L0.401.0 0.80 n-Propylbenzene 103-65-1 8260D 0.80 U 1ug/L0.401.0 0.80 Styrene 100-42-5 8260D 0.82 U 1ug/L0.411.0 0.82 1,1,1,2-Tetrachloroethane 630-20-6 8260D 0.80 U 1ug/L0.401.0 0.80

J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range

P = The RPD between two GC columns exceeds 40%U = Not detected at or above the LOD N = Recovery is out of criteria H = Out of holding time

Q = Surrogate failure L =…