B.08 GFI JBCW_SS012_Analytical Data 2.pdf

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

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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:XJ13065

Date Completed:11/18/2022

11/23/2022 2:41 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: XJ13065

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.

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

Volatiles The method blank for analytical batches 58168, 58263, 59795 contained analyte: Hexachlorobutadiene 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 laboratory control sample (LCS) and laboratory control sample duplicate (LCSD) for analytical batch 58168 exceeded acceptance criteria for the following analyte: Hexachlorobutadiene. This analyte was biased high and were not detected in the samples affected.

The laboratory control sample (LCS) and laboratory control sample duplicate (LCSD) for analytical batch 59795 exceeded acceptance criteria for the following analyte: Dichlorodifluoromethane. This analyte was biased high and were not detected in the samples affected.

The MS/MSD associated with sample XJ13065-003 had compounds recovered outside of the acceptance limits.

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

XJ13065-003, XJ13065-010.

Dissolved Gases The method blank associated with batches 58134, 59920 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 following samples required a dilution which was performed outside of the analytical holding time:

XJ13065-001, XJ13065-003, XJ13065-005, XJ13065-006, XJ13065-008.

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.

Surrogate recovery for the following sample was outside control limits: XJ13065-003, XJ13065-010.

Evidence of matrix interference is present; therefore, re-extraction and/or re-analysis was not performed.

Nitrate The method blank for analytical batch 57714 contained analyte: Nitrate greater than the acceptance criteria. All samples associated with this method blank that have detections for Nitrate have been flagged with a "B”.

The following samples were analyzed outside of analytical holding time due instrumentation maintenance:

XJ13065-001, XJ13065-003, XJ13065-005, XJ13065-006, XJ13065-007, XJ13065-008, XJ13065-012.

The following samples were reanalyzed for a dilution outside of the analytical holding time: XJ13065-001, XJ13065-003, XJ13065-005, XJ13065-006, XJ13065-007, XJ13065-008, XJ13065-012.

Nitrite The following samples were reanalyzed for a dilution outside of the analytical holding time: XJ13065-001, XJ13065-003, XJ13065-005, XJ13065-006, XJ13065-007, XJ13065-008, XJ13065-012.

DOD PACE ANALYTICAL SERVICES, LLC

Manual Integration SummaryAECOM Lot Number: XJ13065

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 XJ13065-001 1 Nitrate - N M-03 9056A XJ13065-001 1 Sulfate M-03 9056A XJ13065-003 1 Nitrate - N M-03 9056A XJ13065-003 1 Sulfate M-03 9056A XJ13065-005 1 Nitrate - N M-03 9056A XJ13065-006 1 Nitrate - N M-03 9056A XJ13065-006 1 Sulfate M-03 8260D XJ13065-006 1 Acetone M-03 9056A XJ13065-007 1 Sulfate M-03 RSK - 175 XJ13065-007 1 Methane M-03 9056A XJ13065-008 1 Nitrate - N M-03 9056A XJ13065-008 1 Sulfate M-03 9056A XJ13065-008 2 Nitrate - N M-03 9056A XJ13065-012 1 Sulfate M-03 RSK - 175 XJ13065-012 1 Methane M-03 9056A XJ13065-012MS 2 Nitrite - N M-03 9056A XJ13065-012MD 2 Nitrite - N M-03 RSK - 175 XQ58134-001 1 Methane M-03 RSK - 175 XQ59920-001 1 Methane M-03 8260D XQ58168-002 1 Dichlorodifluoromethane M-02 8260D XQ58168-003 1 Dichlorodifluoromethane M-02 8260D XQ58168-002 1 cis-1,2-Dichloroethene M-03 8260D XQ58168-002 1 trans-1,2-Dichloroethene M-03 8260D XQ58168-002 1 1,1,1-Trichloroethane M-03 8260D XQ58168-002 1 Trichlorofluoromethane M-02 8260D XQ58168-003 1 Trichlorofluoromethane M-02 8260D XQ58168-002 1 Dibromofluoromethane 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: XJ13065

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

Sample Number Sample ID Matrix Date Sampled Date Received 001 10/12/2022 102012MW-38S Aqueous 10/13/2022 002 10/12/2022 102012MW-38S-c Aqueous 10/13/2022 003 10/12/2022 102512MW-05S Aqueous 10/13/2022 004 10/12/2022 112012MW-05D Aqueous 10/13/2022 005 10/12/2022 114512MW-29S Aqueous 10/13/2022 006 10/12/2022 121512MW-34S Aqueous 10/13/2022 007 10/12/2022 133512PZ-01R Aqueous 10/13/2022 008 10/12/2022 134012MW-33S Aqueous 10/13/2022 009 10/12/2022 145012PZ-08 Aqueous 10/13/2022 010 10/12/2022 150012MW-37S Aqueous 10/13/2022 011 10/12/2022 155012MW-22D Aqueous 10/13/2022 012 10/12/2022 162512MW-43S Aqueous 10/13/2022

(12 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 001 12MW-38S Aqueous Alkalinity @ pH 4.5 su SM 2320B- 280 mg CaCO3/L 14 001 12MW-38S Aqueous TOC SM 5310C- 2.6 mg/L 14 001 12MW-38S Aqueous Chloroethane 8260D 18 ug/L 15 001 12MW-38S Aqueous 1,1-Dichloroethane 8260D 39 ug/L 15 001 12MW-38S Aqueous 1,2-Dichloroethane 8260D 0.66 J ug/L 15 001 12MW-38S Aqueous 1,1-Dichloroethene 8260D 5.9 ug/L 15 001 12MW-38S Aqueous cis-1,2-Dichloroethene 8260D 26 ug/L 15 001 12MW-38S Aqueous Toluene 8260D 0.49 J ug/L 16 001 12MW-38S Aqueous Trichloroethene 8260D 1.4 ug/L 16 001 12MW-38S Aqueous Vinyl chloride 8260D 73 ug/L 16 001 12MW-38S Aqueous 1,4-Dioxane 8270E (SIM) 27 ug/L 17 001 12MW-38S Aqueous Ethene RSK - 175 14 ug/L 18 001 12MW-38S Aqueous Methane RSK - 175 6600 BH ug/L 19 001 12MW-38S Aqueous Iron 6020B 7700 ug/L 20 001 12MW-38S Aqueous Dissolved Iron 6020B 1200 ug/L 21 003 12MW-05S Aqueous Alkalinity @ pH 4.5 su SM 2320B- 84 mg CaCO3/L 24 003 12MW-05S Aqueous Sulfate 9056A 2.9 M-03 mg/L 24 003 12MW-05S Aqueous TOC SM 5310C- 4.0 mg/L 24 003 12MW-05S Aqueous Acetone 8260D 5.3 J ug/L 25 003 12MW-05S Aqueous Benzene 8260D 0.79 J ug/L 25 003 12MW-05S Aqueous Chloroethane 8260D 1.4 J ug/L 25 003 12MW-05S Aqueous 1,1-Dichloroethane 8260D 39 ug/L 25 003 12MW-05S Aqueous 1,2-Dichloroethane 8260D 0.45 J ug/L 25 003 12MW-05S Aqueous 1,1-Dichloroethene 8260D 130 ug/L 25 003 12MW-05S Aqueous trans-1,2-Dichloroethene 8260D 1.7 ug/L 25 003 12MW-05S Aqueous Tetrachloroethene 8260D 13 ug/L 26 003 12MW-05S Aqueous Toluene 8260D 1.0 ug/L 26 003 12MW-05S Aqueous Vinyl chloride 8260D 130 ug/L 26 003 12MW-05S Aqueous cis-1,2-Dichloroethene 8260D 330 H ug/L 27 003 12MW-05S Aqueous Trichloroethene 8260D 220 H ug/L 28 003 12MW-05S Aqueous 1,4-Dioxane 8270E (SIM) 45 Q ug/L 29 003 12MW-05S Aqueous Ethene RSK - 175 14 ug/L 30 003 12MW-05S Aqueous Methane RSK - 175 5500 BH ug/L 31 003 12MW-05S Aqueous Iron 6020B 17000 ug/L 32 003 12MW-05S Aqueous Dissolved Iron 6020B 14000 ug/L 33 004 12MW-05D Aqueous 1,4-Dioxane 8270E (SIM) 1.4 ug/L 36 005 12MW-29S Aqueous Alkalinity @ pH 4.5 su SM 2320B- 290 mg CaCO3/L 37 005 12MW-29S Aqueous TOC SM 5310C- 4.7 mg/L 37 005 12MW-29S Aqueous Chloroethane 8260D 42 ug/L 38 005 12MW-29S Aqueous 1,1-Dichloroethane 8260D 33 ug/L 38 005 12MW-29S Aqueous 1,2-Dichloroethane 8260D 2.1 ug/L 38 005 12MW-29S Aqueous cis-1,2-Dichloroethene 8260D 6.6 ug/L 38 005 12MW-29S Aqueous Toluene 8260D 2.2 ug/L 39

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Detection Summary (Continued)

Sample Sample ID Matrix Parameter Method Result Q Units Page 005 12MW-29S Aqueous Vinyl chloride 8260D 43 ug/L 39 005 12MW-29S Aqueous 1,4-Dioxane 8270E (SIM) 180 ug/L 40 005 12MW-29S Aqueous Ethene RSK - 175 25 ug/L 41 005 12MW-29S Aqueous Methane RSK - 175 7200 BH ug/L 42 005 12MW-29S Aqueous Iron 6020B 34000 ug/L 43 005 12MW-29S Aqueous Dissolved Iron 6020B 18000 ug/L 44 006 12MW-34S Aqueous Alkalinity @ pH 4.5 su SM 2320B- 130 mg CaCO3/L 45 006 12MW-34S Aqueous Sulfate 9056A 14 M-03 mg/L 45 006 12MW-34S Aqueous TOC SM 5310C- 10 mg/L 45 006 12MW-34S Aqueous Chloroethane 8260D 13 ug/L 46 006 12MW-34S Aqueous 1,1-Dichloroethane 8260D 47 ug/L 46 006 12MW-34S Aqueous 1,2-Dichloroethane 8260D 1.8 ug/L 46 006 12MW-34S Aqueous 1,1-Dichloroethene 8260D 66 ug/L 46 006 12MW-34S Aqueous cis-1,2-Dichloroethene 8260D 110 ug/L 46 006 12MW-34S Aqueous trans-1,2-Dichloroethene 8260D 0.46 J ug/L 46 006 12MW-34S Aqueous Tetrachloroethene 8260D 0.85 J ug/L 47 006 12MW-34S Aqueous Trichloroethene 8260D 4.0 ug/L 47 006 12MW-34S Aqueous Vinyl chloride 8260D 33 ug/L 47 006 12MW-34S Aqueous 1,4-Dioxane 8270E (SIM) 150 ug/L 48 006 12MW-34S Aqueous Ethene RSK - 175 11 ug/L 49 006 12MW-34S Aqueous Methane RSK - 175 6100 BH ug/L 50 006 12MW-34S Aqueous Iron 6020B 29000 ug/L 51 006 12MW-34S Aqueous Dissolved Iron 6020B 130 ug/L 52 007 12PZ-01R Aqueous Alkalinity @ pH 4.5 su SM 2320B- 58 mg CaCO3/L 53 007 12PZ-01R Aqueous Sulfate 9056A 12 M-03 mg/L 53 007 12PZ-01R Aqueous Nitrate - N 9056A 0.056 H mg/L 53 007 12PZ-01R Aqueous TOC SM 5310C- 10 mg/L 53 007 12PZ-01R Aqueous Acetone 8260D 7.5 J ug/L 54 007 12PZ-01R Aqueous 1,4-Dioxane 8270E (SIM) 0.12 J ug/L 56 007 12PZ-01R Aqueous Methane RSK - 175 7.9 BJM-03 ug/L 57 007 12PZ-01R Aqueous Iron 6020B 2400 ug/L 58 007 12PZ-01R Aqueous Dissolved Iron 6020B 520 ug/L 59 008 12MW-33S Aqueous Alkalinity @ pH 4.5 su SM 2320B- 160 mg CaCO3/L 60 008 12MW-33S Aqueous Sulfate 9056A 2.2 M-03 mg/L 60 008 12MW-33S Aqueous Nitrate - N 9056A 0.0088 HJM-03 mg/L 60 008 12MW-33S Aqueous TOC SM 5310C- 8.2 mg/L 60 008 12MW-33S Aqueous Acetone 8260D 8.6 J ug/L 61 008 12MW-33S Aqueous Carbon disulfide 8260D 0.56 J ug/L 61 008 12MW-33S Aqueous Chloroethane 8260D 0.82 J ug/L 61 008 12MW-33S Aqueous 1,1-Dichloroethane 8260D 3.2 ug/L 61 008 12MW-33S Aqueous 1,1-Dichloroethene 8260D 1.9 ug/L 61 008 12MW-33S Aqueous Vinyl chloride 8260D 2.9 ug/L 62 008 12MW-33S Aqueous 1,4-Dioxane 8270E (SIM) 32 ug/L 63 008 12MW-33S Aqueous Ethane RSK - 175 3.5 J ug/L 64 008 12MW-33S Aqueous Methane RSK - 175 6700 BH ug/L 65 008 12MW-33S Aqueous Iron 6020B 6100 ug/L 66 008 12MW-33S Aqueous Dissolved Iron 6020B 2000 ug/L 67 009 12PZ-08 Aqueous Acetone 8260D 5.1 J ug/L 68

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Detection Summary (Continued)

Sample Sample ID Matrix Parameter Method Result Q Units Page 009 12PZ-08 Aqueous 1,4-Dioxane 8270E (SIM) 0.28 ug/L 70 010 12MW-37S Aqueous Acetone 8260D 7.4 J ug/L 71 010 12MW-37S Aqueous 1,1-Dichloroethane 8260D 21 ug/L 71 010 12MW-37S Aqueous cis-1,2-Dichloroethene 8260D 30 ug/L 71 010 12MW-37S Aqueous trans-1,2-Dichloroethene 8260D 0.75 J ug/L 71 010 12MW-37S Aqueous Tetrachloroethene 8260D 110 ug/L 72 010 12MW-37S Aqueous 1,1,1-Trichloroethane 8260D 0.44 J ug/L 72 010 12MW-37S Aqueous Trichloroethene 8260D 88 ug/L 72 010 12MW-37S Aqueous Vinyl chloride 8260D 150 ug/L 72 010 12MW-37S Aqueous 1,1-Dichloroethene 8260D 460 H ug/L 73 010 12MW-37S Aqueous 1,4-Dioxane 8270E (SIM) 0.94 Q ug/L 75 011 12MW-22D Aqueous Acetone 8260D 7.2 J ug/L 76 011 12MW-22D Aqueous Benzene 8260D 0.70 J ug/L 76 011 12MW-22D Aqueous 1,4-Dioxane 8270E (SIM) 0.49 ug/L 78 012 12MW-43S Aqueous Alkalinity @ pH 4.5 su SM 2320B- 65 mg CaCO3/L 79 012 12MW-43S Aqueous Sulfate 9056A 6.4 M-03 mg/L 79 012 12MW-43S Aqueous TOC SM 5310C- 1.6 J mg/L 79 012 12MW-43S Aqueous Benzene 8260D 0.79 J ug/L 80 012 12MW-43S Aqueous 1,1-Dichloroethane 8260D 9.0 ug/L 80 012 12MW-43S Aqueous 1,1-Dichloroethene 8260D 66 ug/L 80 012 12MW-43S Aqueous cis-1,2-Dichloroethene 8260D 0.94 J ug/L 80 012 12MW-43S Aqueous Trichloroethene 8260D 0.46 J ug/L 81 012 12MW-43S Aqueous Vinyl chloride 8260D 0.41 J ug/L 81 012 12MW-43S Aqueous 1,4-Dioxane 8270E (SIM) 12 ug/L 82 012 12MW-43S Aqueous Methane RSK - 175 110 BM-03 ug/L 83 012 12MW-43S Aqueous Iron 6020B 1600 ug/L 84 012 12MW-43S Aqueous Dissolved Iron 6020B 700 ug/L 85 (118 detections)

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 Description: Matrix:

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-38S

XJ13065-001

10/12/2022 1020 10/13/2022

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 10/17/2022 1247 JJM 57271

1 (Nitrate - N) 9056A 1 10/14/2022 2140 BMG2 57714 2 (Nitrate - N) 9056A 5 10/25/2022 2203 BMG2 59052 1 (Nitrite - N) 9056A 1 10/14/2022 2140 BMG2 57710 2 (Nitrite - N) 9056A 5 10/25/2022 2203 BMG2 59064 1 (Sulfate) 9056A 1 10/14/2022 2140 BMG2 57716

2 (TOC) SM 5310C-2014 1 11/08/2022 1142 CMM 59414

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Alkalinity @ pH 4.5 su SM 2320B-2011 280 1mg CaCO3/L2020 20 Nitrate - N 9056A 5.6 BHM-03 1mg/L0.00500.020 0.010 Sulfate 9056A 0.50 UM-03 1mg/L0.251.0 0.50 Nitrite - N 9056A 0.010 UH 1mg/L0.00500.020 0.010 Nitrate - N 9056A 0.050 UH 2mg/L0.0250.10 0.050 TOC SM 5310C-2014 2.6 2mg/L0.602.0 1.5 Nitrite - N 9056A 0.050 UH 2mg/L0.0250.10 0.050

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.)

Volatile Organic Compounds by GC/MS

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-38S

XJ13065-001

10/12/2022 1020 10/13/2022

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 10/26/2022 1245 CDA 58263

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 18 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 39 1ug/L0.401.0 0.80 1,2-Dichloroethane 107-06-2 8260D 0.66 J 1ug/L0.401.0 0.80 1,1-Dichloroethene 75-35-4 8260D 5.9 1ug/L0.401.0 0.80 cis-1,2-Dichloroethene 156-59-2 8260D 26 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-38S

XJ13065-001

10/12/2022 1020 10/13/2022

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 10/26/2022 1245 CDA 58263

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 0.49 J 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 1.4 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 73 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 97 85-114 Dibromofluoromethane 101 80-119 1,2-Dichloroethane-d4 100 81-118 Toluene-d8 101 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-38S

XJ13065-001

10/12/2022 1020 10/13/2022

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) 20 10/25/2022 1137 JCG 10/19/2022 1658 57530

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 1,4-Dioxane 123-91-1 8270E (SIM) 27 1ug/L1.44.0 2.8

AcceptanceRun 1Surrogate Q % Recovery Limits 1,4-Dioxane-d8 92 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-38S

XJ13065-001

10/12/2022 1020 10/13/2022

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 10/25/2022 1137 BBW 58134

2 RSK - 175 20 11/11/2022 2152 BBW 59920

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 14 1ug/L2.510 5.0 Methane 74-82-8 RSK - 175 12000 BE 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-38S

XJ13065-001

10/12/2022 1020 10/13/2022

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 10/25/2022 1137 BBW 58134

2 RSK - 175 20 11/11/2022 2152 BBW 59920

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

Ethane 74-84-0 RSK - 175 100 UH 2ug/L50200 100 Ethene 74-85-1 RSK - 175 100 UH 2ug/L50200 100 Methane 74-82-8 RSK - 175 6600 BH 2ug/L50200 100

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

12MW-38S

XJ13065-001

10/12/2022 1020 10/13/2022

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 11/10/2022 0512 BNW 10/14/2022 0850 57035

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Iron 7439-89-6 6020B 7700 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-38S

XJ13065-001

10/12/2022 1020 10/13/2022

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 11/14/2022 0755 BNW 10/19/2022 1902 57494

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Dissolved Iron 7439-89-6 6020B 1200 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-38S-c

XJ13065-002

10/12/2022 1020 10/13/2022

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 10/26/2022 0207 SDC 58176

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-38S-c

XJ13065-002

10/12/2022 1020 10/13/2022

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 10/26/2022 0207 SDC 58176

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 98 85-114 Dibromofluoromethane 96 80-119 1,2-Dichloroethane-d4 92 81-118 Toluene-d8 100 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-05S

XJ13065-003

10/12/2022 1025 10/13/2022

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 10/17/2022 1301 JJM 57271

1 (Nitrate - N) 9056A 1 10/14/2022 2043 BMG2 57714 2 (Nitrate - N) 9056A 5 10/25/2022 2028 BMG2 59052 1 (Nitrite - N) 9056A 1 10/14/2022 2043 BMG2 57710 2 (Nitrite - N) 9056A 5 10/25/2022 2028 BMG2 59064 1 (Sulfate) 9056A 1 10/14/2022 2043 BMG2 57716

1 (TOC) SM 5310C-2014 1 11/05/2022 1206 CMM 59188

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Alkalinity @ pH 4.5 su SM 2320B-2011 84 1mg CaCO3/L2020 20 Nitrate - N 9056A 4.6 BHM-03 1mg/L0.00500.020 0.010 Sulfate 9056A 2.9 M-03 1mg/L0.251.0 0.50 Nitrite - N 9056A 0.010 UH 1mg/L0.00500.020 0.010 Nitrate - N 9056A 0.050 UH 2mg/L0.0250.10 0.050 TOC SM 5310C-2014 4.0 1mg/L0.602.0 1.5 Nitrite - N 9056A 0.050 UH 2mg/L0.0250.10 0.050

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-05S

XJ13065-003

10/12/2022 1025 10/13/2022

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 10/26/2022 0438 SDC 58168

2 5030B 8260D 5 11/11/2022 0322 BBW 59795

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

Acetone 67-64-1 8260D 5.3 J 1ug/L5.020 10 Benzene 71-43-2 8260D 0.79 J 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 1.4 J 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 39 1ug/L0.401.0 0.80 1,2-Dichloroethane 107-06-2 8260D 0.45 J 1ug/L0.401.0 0.80 1,1-Dichloroethene 75-35-4 8260D 130 1ug/L0.401.0 0.80 cis-1,2-Dichloroethene 156-59-2 8260D 360 E 1ug/L0.401.0 0.80 trans-1,2-Dichloroethene 156-60-5 8260D 1.7 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 UL 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-05S

XJ13065-003

10/12/2022 1025 10/13/2022

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 10/26/2022 0438 SDC 58168

2 5030B 8260D 5 11/11/2022 0322 BBW 59795

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 13 1ug/L0.401.0 0.80 Toluene 108-88-3 8260D 1.0 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 240 E 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 130 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 99 85-114 H 99 85-114 Dibromofluoromethane 104 80-119 H 105 80-119 1,2-Dichloroethane-d4 100 81-118 H 102 81-118 Toluene-d8 103 89-112 H 102 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-05S

XJ13065-003

10/12/2022 1025 10/13/2022

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 10/26/2022 0438 SDC 58168

2 5030B 8260D 5 11/11/2022 0322 BBW 59795

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

Acetone 67-64-1 8260D 50 UH 2ug/L25100 50 Benzene 71-43-2 8260D 4.0 UH 2ug/L2.05.0 4.0 Bromobenzene 108-86-1 8260D 4.0 UH 2ug/L2.05.0 4.0 Bromodichloromethane 75-27-4 8260D 4.0 UH 2ug/L2.05.0 4.0 Bromoform 75-25-2 8260D 4.0 UH 2ug/L2.05.0 4.0 Bromomethane (Methyl bromide) 74-83-9 8260D 4.0 UH 2ug/L2.010 4.0 2-Butanone (MEK) 78-93-3 8260D 20 UH 2ug/L1050 20 n-Butylbenzene 104-51-8 8260D 4.0 UH 2ug/L2.05.0 4.0 Carbon disulfide 75-15-0 8260D 4.0 UH 2ug/L2.05.0 4.0 Carbon tetrachloride 56-23-5 8260D 4.0 UH 2ug/L2.05.0 4.0 Chlorobenzene 108-90-7 8260D 4.0 UH 2ug/L2.05.0 4.0 Chloroethane 75-00-3 8260D 4.0 UH 2ug/L2.010 4.0 Chloroform 67-66-3 8260D 4.0 UH 2ug/L2.05.0 4.0 Chloromethane (Methyl chloride) 74-87-3 8260D 5.0 UH 2ug/L2.510 5.0 2-Chlorotoluene 95-49-8 8260D 4.0 UH 2ug/L2.05.0 4.0 4-Chlorotoluene 106-43-4 8260D 4.0 UH 2ug/L2.05.0 4.0 1,2-Dibromo-3-chloropropane (DBCP) 96-12-8 8260D 4.0 UH 2ug/L2.05.0 4.0 Dibromochloromethane 124-48-1 8260D 4.0 UH 2ug/L2.05.0 4.0 1,2-Dibromoethane (EDB) 106-93-4 8260D 4.0 UH 2ug/L2.05.0 4.0 Dibromomethane (Methylene bromide) 74-95-3 8260D 4.0 UH 2ug/L2.05.0 4.0 1,2-Dichlorobenzene 95-50-1 8260D 4.0 UH 2ug/L2.05.0 4.0 1,3-Dichlorobenzene 541-73-1 8260D 4.0 UH 2ug/L2.05.0 4.0 1,4-Dichlorobenzene 106-46-7 8260D 4.0 UH 2ug/L2.05.0 4.0 Dichlorodifluoromethane 75-71-8 8260D 6.0 UHLS 2ug/L3.010 6.0 1,1-Dichloroethane 75-34-3 8260D 39 H 2ug/L2.05.0 4.0 1,2-Dichloroethane 107-06-2 8260D 4.0 UH 2ug/L2.05.0 4.0 1,1-Dichloroethene 75-35-4 8260D 120 H 2ug/L2.05.0 4.0 cis-1,2-Dichloroethene 156-59-2 8260D 330 H 2ug/L2.05.0 4.0 trans-1,2-Dichloroethene 156-60-5 8260D 4.0 UH 2ug/L2.05.0 4.0 1,2-Dichloropropane 78-87-5 8260D 4.0 UH 2ug/L2.05.0 4.0 cis-1,3-Dichloropropene 10061-01-5 8260D 4.0 UH 2ug/L2.05.0 4.0 trans-1,3-Dichloropropene 10061-02-6 8260D 4.0 UH 2ug/L2.05.0 4.0 Ethylbenzene 100-41-4 8260D 4.0 UH 2ug/L2.05.0 4.0 Hexachlorobutadiene 87-68-3 8260D 4.0 UH 2ug/L2.05.0 4.0 2-Hexanone 591-78-6 8260D 20 UH 2ug/L1050 20 Isopropylbenzene 98-82-8 8260D 4.0 UH 2ug/L2.05.0 4.0 Methyl tertiary butyl ether (MTBE) 1634-04-4 8260D 4.0 UH 2ug/L2.05.0 4.0 4-Methyl-2-pentanone 108-10-1 8260D 20 UH 2ug/L1050 20 Methylene chloride 75-09-2 8260D 4.0 UH 2ug/L2.05.0 4.0 Naphthalene 91-20-3 8260D 4.0 UH 2ug/L2.05.0 4.0 n-Propylbenzene 103-65-1 8260D 4.0 UH 2ug/L2.05.0 4.0 Styrene 100-42-5 8260D 4.1 UH 2ug/L2.15.0 4.1 1,1,1,2-Tetrachloroethane 630-20-6 8260D 4.0 UH 2ug/L2.05.0 4.0

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-05S

XJ13065-003

10/12/2022 1025 10/13/2022

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 10/26/2022 0438 SDC 58168

2 5030B 8260D 5 11/11/2022 0322 BBW 59795

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

1,1,2,2-Tetrachloroethane 79-34-5 8260D 4.0 UH 2ug/L2.05.0 4.0 Tetrachloroethene 127-18-4 8260D 12 H 2ug/L2.05.0 4.0 Toluene 108-88-3 8260D 4.0 UH 2ug/L2.05.0 4.0 1,2,3-Trichlorobenzene 87-61-6 8260D 4.0 UH 2ug/L2.05.0 4.0 1,2,4-Trichlorobenzene 120-82-1 8260D 4.0 UH 2ug/L2.05.0 4.0 1,1,1-Trichloroethane 71-55-6 8260D 4.0 UH 2ug/L2.05.0 4.0 1,1,2-Trichloroethane 79-00-5 8260D 4.0 UH 2ug/L2.05.0 4.0 Trichloroethene 79-01-6 8260D 220 H 2ug/L2.05.0 4.0 Trichlorofluoromethane 75-69-4 8260D 4.0 UH 2ug/L2.05.0 4.0 1,2,3-Trichloropropane 96-18-4 8260D 4.0 UH 2ug/L2.05.0 4.0 1,2,4-Trimethylbenzene 95-63-6 8260D 4.0 UH 2ug/L2.05.0 4.0 1,3,5-Trimethylbenzene 108-67-8 8260D 4.0 UH 2ug/L2.05.0 4.0 Vinyl chloride 75-01-4 8260D 130 H 2ug/L2.05.0 4.0 m+p - Xylenes 179601-23-1 8260D 4.0 UH 2ug/L2.05.0 4.0 o - Xylenes 95-47-6 8260D 4.0 UH 2ug/L2.05.0 4.0

AcceptanceAcceptance Run 2Run 1Surrogate Q % Recovery Limits % Recovery LimitsQ Bromofluorobenzene 99 85-114 H 99 85-114 Dibromofluoromethane 104 80-119 H 105 80-119 1,2-Dichloroethane-d4 100 81-118 H 102 81-118 Toluene-d8 103 89-112 H 102 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-05S

XJ13065-003

10/12/2022 1025 10/13/2022

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) 20 10/25/2022 1158 JCG 10/19/2022 1658 57530

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 1,4-Dioxane 123-91-1 8270E (SIM) 45 Q 1ug/L1.44.0 2.8

AcceptanceRun 1Surrogate Q % Recovery Limits 1,4-Dioxane-d8 N 319 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…