B.08 GFI JBCW_SS012_Analytical Data 4.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: 60444074.0013AB.H

Lot Number:XJ19034

Date Completed:11/21/2022

11/23/2022 9:32 AM

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: XJ19034

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

The sample date was removed from the sample ID per client request.

Volatiles The method blank associated with batches 58587, 60581 had Hexachlorobutadiene detected at a concentration that was above the MDL but below the PQL. All samples associated with this method blank that have detections for Hexachlorobutadiene have been flagged with a "B”.

The LCS associated with batch 60100 had Acetone recovered above the acceptance limits. This demonstrates a high bias on analytical results. There were no detections for this compound in the samples associated with this batch; therefore, data quality is not impacted.

Reanalysis of the following sample was performed outside of the analytical holding time for Vinyl chloride which failed above CCV criteria and was detected in the sample: XJ19034-006. The sample was diluted out of a vial that had been previously analyzed and had headspace yielding results that are much lower in the third analytical run. All data has been reported.

The following sample required a dilution which was performed outside of the analytical holding time:

XJ19034-007.

Reanalysis of the following sample was performed outside of the analytical holding time for suspected carry-over in the analysis: XJ19034-008. All data has been reported

The MS/MSD associated with sample XJ19034-006 had compounds 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.

Dissolved Gases The method blank associated with batches 58888, 60577 had Methane detected at a concentration that was above the MDL. All samples associated with this method blank that have detections for Methane have been flagged with a "B”.

The LCS associated with batch 58888 had Methane recovered above the acceptance limits. This demonstrates a high bias on analytical results and teh data has been reported.

The following samples required a dilution which was performed outside of the analytical holding time:

XJ19034-006, XJ19034-007, XJ19034-008. All data has been reported.

Semivolatiles 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.

The MS/MSD associated with sample XJ19034-004 had 1,4-Dioxane 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.

Nitrate The laboratory control sample (LCS) for analytical batch 58827 outside of acceptance criteria for the following analyte: Nitrate. Sample XJ19034-006 was non-detect and the data has been reported.

Samples XJ19034-007, XJ19034-008 were reanalyzed outside of holding time and 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

Nitrite The laboratory control sample (LCS) for analytical batch 58833 outside of acceptance criteria for the following analyte: Nitrite. Samples XJ19034-006, XJ19034-007, XJ19034-008 were non-detect and the data has been reported.

TOC

The following sample, XJ19034-008 was analyzed outside of analytical holding time due to laboratory error.

DOD PACE ANALYTICAL SERVICES, LLC

Manual Integration SummaryAECOM Lot Number: XJ19034

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: 60444074.0013AB.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 8260D XJ19034-001 1 cis-1,2-Dichloroethene M-03 9056A XJ19034-006 1 Sulfate M-03 8260D XJ19034-006 1 Acetone M-03 8260D XJ19034-006 1 Trichloroethene M-01 RSK - 175 XJ19034-006 2 Methane M-03 9056A XJ19034-007 1 Sulfate M-03 RSK - 175 XJ19034-007 2 Methane M-03 9056A XJ19034-008 1 Sulfate M-03 RSK - 175 XJ19034-008 1 Methane M-03 RSK - 175 XJ19034-008 2 Methane M-03 8260D XJ19034-006MS 1 Acetone M-03 8260D XJ19034-006MD 1 Acetone M-03 8260D XJ19034-006MD 1 Dichlorodifluoromethane M-02 RSK - 175 XQ58888-001 1 Methane M-03 RSK - 175 XQ60577-001 1 Methane M-03 8260D XJ19034-007MS 2 Chloroethane M-03

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

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.)

Sample SummaryAECOM Lot Number: XJ19034

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

Sample Number Sample ID Matrix Date Sampled Date Received 001 10/18/2022 153012MW-03D Aqueous 10/19/2022 002 10/18/2022 153012MW-03Dc Aqueous 10/19/2022 003 10/18/2022 153012MW-46S Aqueous 10/19/2022 004 10/18/2022 153512MW-31S Aqueous 10/19/2022 005 10/18/2022 153512MW-31Sa Aqueous 10/19/2022 006 10/18/2022 165512MW-03S Aqueous 10/19/2022 007 10/18/2022 170012MW-28S Aqueous 10/19/2022 008 10/18/2022 170512MW-04S Aqueous 10/19/2022

(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: 60444074.0013AB.H

Sample Sample ID Matrix Parameter Method Result Q Units Page 001 12MW-03D Aqueous Chloroethane 8260D 4.4 ug/L 11 001 12MW-03D Aqueous 1,1-Dichloroethane 8260D 1.9 ug/L 11 001 12MW-03D Aqueous cis-1,2-Dichloroethene 8260D 1.5 M-03 ug/L 11 001 12MW-03D Aqueous Trichloroethene 8260D 0.59 J ug/L 12 001 12MW-03D Aqueous Vinyl chloride 8260D 6.1 ug/L 12 001 12MW-03D Aqueous 1,4-Dioxane 8270E (SIM) 4.5 ug/L 13 003 12MW-46S Aqueous 1,4-Dioxane 8270E (SIM) 4.4 ug/L 18 004 12MW-31S Aqueous 1,1-Dichloroethane 8260D 13 ug/L 19 004 12MW-31S Aqueous 1,1-Dichloroethene 8260D 150 ug/L 19 004 12MW-31S Aqueous cis-1,2-Dichloroethene 8260D 16 ug/L 19 004 12MW-31S Aqueous Tetrachloroethene 8260D 11 ug/L 20 004 12MW-31S Aqueous Trichloroethene 8260D 20 ug/L 20 004 12MW-31S Aqueous Vinyl chloride 8260D 59 ug/L 20 004 12MW-31S Aqueous 1,4-Dioxane 8270E (SIM) 30 S ug/L 21 005 12MW-31Sa Aqueous 1,1-Dichloroethane 8260D 13 ug/L 22 005 12MW-31Sa Aqueous 1,1-Dichloroethene 8260D 150 ug/L 22 005 12MW-31Sa Aqueous cis-1,2-Dichloroethene 8260D 17 ug/L 22 005 12MW-31Sa Aqueous Tetrachloroethene 8260D 12 ug/L 23 005 12MW-31Sa Aqueous Trichloroethene 8260D 20 ug/L 23 005 12MW-31Sa Aqueous Vinyl chloride 8260D 62 ug/L 23 005 12MW-31Sa Aqueous 1,4-Dioxane 8270E (SIM) 28 ug/L 24 006 12MW-03S Aqueous Sulfate 9056A 6.2 M-03 mg/L 25 006 12MW-03S Aqueous TOC SM 5310C- 3.0 mg/L 25 006 12MW-03S Aqueous Chloroethane 8260D 210 ug/L 26 006 12MW-03S Aqueous 1,1-Dichloroethane 8260D 210 ug/L 26 006 12MW-03S Aqueous 1,1-Dichloroethene 8260D 440 ug/L 26 006 12MW-03S Aqueous cis-1,2-Dichloroethene 8260D 1200 S ug/L 26 006 12MW-03S Aqueous trans-1,2-Dichloroethene 8260D 8.7 J ug/L 26 006 12MW-03S Aqueous Tetrachloroethene 8260D 19 ug/L 27 006 12MW-03S Aqueous Trichloroethene 8260D 500 M-01 ug/L 27 006 12MW-03S Aqueous Vinyl chloride 8260D 45 H ug/L 31 006 12MW-03S Aqueous 1,4-Dioxane 8270E (SIM) 29 Q ug/L 32 006 12MW-03S Aqueous Ethane RSK - 175 6.7 J ug/L 33 006 12MW-03S Aqueous Ethene RSK - 175 180 ug/L 33 006 12MW-03S Aqueous Methane RSK - 175 7800 BHM-03 ug/L 34 006 12MW-03S Aqueous Iron 6020B 2800 ug/L 35 006 12MW-03S Aqueous Dissolved Iron 6020B 210 ug/L 36 007 12MW-28S Aqueous Alkalinity @ pH 4.5 su SM 2320B- 280 mg CaCO3/L 37 007 12MW-28S Aqueous Sulfate 9056A 14 M-03 mg/L 37 007 12MW-28S Aqueous Nitrate - N 9056A 0.026 H mg/L 37 007 12MW-28S Aqueous TOC SM 5310C- 6.8 mg/L 37 007 12MW-28S Aqueous 1,1-Dichloroethane 8260D 61 ug/L 38 007 12MW-28S Aqueous cis-1,2-Dichloroethene 8260D 140 ug/L 38

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Detection Summary (Continued)

Sample Sample ID Matrix Parameter Method Result Q Units Page 007 12MW-28S Aqueous trans-1,2-Dichloroethene 8260D 1.4 ug/L 38 007 12MW-28S Aqueous Tetrachloroethene 8260D 32 ug/L 39 007 12MW-28S Aqueous 1,1,2-Trichloroethane 8260D 0.85 J ug/L 39 007 12MW-28S Aqueous Vinyl chloride 8260D 93 ug/L 39 007 12MW-28S Aqueous 1,1-Dichloroethene 8260D 240 H ug/L 40 007 12MW-28S Aqueous Trichloroethene 8260D 190 H ug/L 41 007 12MW-28S Aqueous 1,4-Dioxane 8270E (SIM) 29 Q ug/L 42 007 12MW-28S Aqueous Ethane RSK - 175 4.5 J ug/L 43 007 12MW-28S Aqueous Ethene RSK - 175 19 ug/L 43 007 12MW-28S Aqueous Methane RSK - 175 4300 BHM-03 ug/L 44 007 12MW-28S Aqueous Iron 6020B 24000 ug/L 45 007 12MW-28S Aqueous Dissolved Iron 6020B 22000 ug/L 46 008 12MW-04S Aqueous Nitrate - N 9056A 0.0069 JL mg/L 47 008 12MW-04S Aqueous Sulfate 9056A 27 M-03 mg/L 47 008 12MW-04S Aqueous TOC SM 5310C- 4.4 H mg/L 47 008 12MW-04S Aqueous 1,4-Dioxane 8270E (SIM) 1.1 ug/L 52 008 12MW-04S Aqueous Methane RSK - 175 32 BHM-03 ug/L 54 008 12MW-04S Aqueous Iron 6020B 4000 ug/L 55 008 12MW-04S Aqueous Dissolved Iron 6020B 920 ug/L 56 (62 detections)

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Volatile Organic Compounds by GC/MS Description: Matrix:

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-03D

XJ19034-001

10/18/2022 1530 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 10/31/2022 1529 CDA 58721

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 4.4 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 1.9 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 1.5 M-03 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 1,1,2,2-Tetrachloroethane 79-34-5 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-03D

XJ19034-001

10/18/2022 1530 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 10/31/2022 1529 CDA 58721

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 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 0.59 J 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 6.1 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

AcceptanceRun 1Surrogate Q % Recovery Limits Bromofluorobenzene 100 85-114 Dibromofluoromethane 108 80-119 1,2-Dichloroethane-d4 103 81-118 Toluene-d8 104 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-03D

XJ19034-001

10/18/2022 1530 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 3520C 8270E (SIM) 5 11/01/2022 1231 JCG 10/24/2022 1446 57949

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 1,4-Dioxane 123-91-1 8270E (SIM) 4.5 1ug/L0.341.0 0.70

AcceptanceRun 1Surrogate Q % Recovery Limits 1,4-Dioxane-d8 82 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.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-03Dc

XJ19034-002

10/18/2022 1530 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 10/31/2022 1420 CDA 58721

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 1,1,2,2-Tetrachloroethane 79-34-5 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-03Dc

XJ19034-002

10/18/2022 1530 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 10/31/2022 1420 CDA 58721

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 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

AcceptanceRun 1Surrogate Q % Recovery Limits Bromofluorobenzene 100 85-114 Dibromofluoromethane 106 80-119 1,2-Dichloroethane-d4 99 81-118 Toluene-d8 105 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-46S

XJ19034-003

10/18/2022 1530 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 10/31/2022 1552 CDA 58721

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 1,1,2,2-Tetrachloroethane 79-34-5 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-46S

XJ19034-003

10/18/2022 1530 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 10/31/2022 1552 CDA 58721

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 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

AcceptanceRun 1Surrogate Q % Recovery Limits Bromofluorobenzene 101 85-114 Dibromofluoromethane 108 80-119 1,2-Dichloroethane-d4 101 81-118 Toluene-d8 104 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-46S

XJ19034-003

10/18/2022 1530 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 3520C 8270E (SIM) 5 11/01/2022 1251 JCG 10/24/2022 1446 57949

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 1,4-Dioxane 123-91-1 8270E (SIM) 4.4 1ug/L0.341.0 0.70

AcceptanceRun 1Surrogate Q % Recovery Limits 1,4-Dioxane-d8 75 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.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-31S

XJ19034-004

10/18/2022 1535 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 10/31/2022 1615 CDA 58721

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 13 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 150 1ug/L0.401.0 0.80 cis-1,2-Dichloroethene 156-59-2 8260D 16 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 1,1,2,2-Tetrachloroethane 79-34-5 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-31S

XJ19034-004

10/18/2022 1535 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 10/31/2022 1615 CDA 58721

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Tetrachloroethene 127-18-4 8260D 11 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 20 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 59 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

AcceptanceRun 1Surrogate Q % Recovery Limits Bromofluorobenzene 101 85-114 Dibromofluoromethane 112 80-119 1,2-Dichloroethane-d4 102 81-118 Toluene-d8 106 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-31S

XJ19034-004

10/18/2022 1535 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 3520C 8270E (SIM) 20 11/01/2022 1312 JCG 10/24/2022 1446 57949

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 1,4-Dioxane 123-91-1 8270E (SIM) 30 S 1ug/L1.44.0 2.8

AcceptanceRun 1Surrogate Q % Recovery Limits 1,4-Dioxane-d8 88 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.)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-31Sa

XJ19034-005

10/18/2022 1535 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 10/31/2022 1639 CDA 58721

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 13 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 150 1ug/L0.401.0 0.80 cis-1,2-Dichloroethene 156-59-2 8260D 17 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 1,1,2,2-Tetrachloroethane 79-34-5 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-31Sa

XJ19034-005

10/18/2022 1535 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 1 10/31/2022 1639 CDA 58721

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Tetrachloroethene 127-18-4 8260D 12 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 20 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 62 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

AcceptanceRun 1Surrogate Q % Recovery Limits Bromofluorobenzene 100 85-114 Dibromofluoromethane 109 80-119 1,2-Dichloroethane-d4 102 81-118 Toluene-d8 105 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-31Sa

XJ19034-005

10/18/2022 1535 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 3520C 8270E (SIM) 20 11/01/2022 1413 JCG 10/24/2022 1446 57949

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 1,4-Dioxane 123-91-1 8270E (SIM) 28 1ug/L1.44.0 2.8

AcceptanceRun 1Surrogate Q % Recovery Limits 1,4-Dioxane-d8 82 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.)

Inorganic non-metals

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-03S

XJ19034-006

10/18/2022 1655 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 (Alkalinity @) SM 2320B-2011 1 10/20/2022 1329 JJM 57680

1 (Nitrate - N) 9056A 1 10/20/2022 0141 BMG2 58827 1 (Nitrite - N) 9056A 1 10/20/2022 0141 BMG2 58833 1 (Sulfate) 9056A 1 10/20/2022 0141 BMG2 58835

1 (TOC) SM 5310C-2014 1 11/10/2022 0358 CMM 59568

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 UL 1mg/L0.00500.020 0.010 Nitrite - N 9056A 0.010 UL 1mg/L0.00500.020 0.010 Sulfate 9056A 6.2 M-03 1mg/L0.251.0 0.50 TOC SM 5310C-2014 3.0 1mg/L0.602.0 1.5

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-03S

XJ19034-006

10/18/2022 1655 10/19/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AB.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 5030B 8260D 10 10/28/2022 1948 BBW 58587

2 5030B 8260D 1 10/31/2022 1702 CDA 58721

3 5030B 8260D 10 11/19/2022 0445 BBW 60581

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Acetone 67-64-1 8260D 100 UM-03 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 210 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 US 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 US 1ug/L6.020 12…