B.08 GFI JBCW_SS012_Analytical Data 3.pdf

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Report of Analysis

AECOM

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

Project Name: JBC Weapons SWMU 12 (SS012)

Project Number: 60444074.0013AC.H

Lot Number:XJ15008

Date Completed:12/03/2022

12/07/2022 12:25 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: XJ15008

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

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

The method blank for analytical batches 59990, 60581 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) for analytical batch 60214 exceeded acceptance criteria for the following analyte: acetone. This analyte was biased high and were not detected in the samples affected.

The MS/MSD associated with sample XJ15008-006 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.

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

XJ15008-003, XJ15008-004. The samples did not have an ending CCV associated with the first analysis and all data has been reported.

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

XJ15008-007, XJ15008-017. All data has been reported.

Surrogate recovery for the following sample was outside the upper control limit: XJ15008-011. This sample did not contain any target analytes; therefore, re-extraction and/or re-analysis was not performed.

Reanalysis of the following samples was performed outside of the analytical holding time due to a high surrogate failure in the first analysis: XJ15008-008, XJ15008-009, XJ15008-012, XJ15008-014. The continuing calibration verification (CCV) associated with analytical batch 59990 recovered outside acceptance criteria, low biased, for Acetone. All data has been reported.

Reanalysis of the following samples was performed outside of the analytical holding time due to missing ending CCV during the first analysis: XJ15008-006, XJ15008-015, XJ15008-016, XJ15008-018, XJ15008- 019, XJ15008-020. All data has been reported.

Semivolatiles Surrogate recovery for the following sample was outside control limits: XJ15008-012. Re-extraction and re-analysis was performed with concurring results. The original analysis has been reported.

The MS/MSD associated with sample XJ15008-006 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.

Anions The method blank associated with batch 58616 had Nitrate detected at a concentration that was above the MDL but below the PQL. All samples associated with this method blank that have detections for Nitrate have been flagged with a "B”.

The laboratory control sample (LCS) for analytical batch 58620 exceeded acceptance criteria for the following analyte: Nitrite. The analyte was biased high and were not detected in the samples affected:

XJ15008-003, XJ15008-007, XJ15008-012, XJ15008-013, XJ15008-014.

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 following samples were diluted due to the nature of the sample matrix outside of holding time for Nitrate, Sulfate : XJ15008-003, XJ15008-007. All data has been reported.

Dissolved Gases The method blank associated with batches 58394, 58581, 60512, 60577 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:

XJ15008-003, XJ15008-007. All data has been reported.

DOD PACE ANALYTICAL SERVICES, LLC

Manual Integration SummaryAECOM Lot Number: XJ15008

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 XJ15008-003 1 Nitrate - N M-03 9056A XJ15008-003 3 Sulfate M-03 RSK - 175 XJ15008-003 2 Methane M-03 8260D XJ15008-006 1 Benzene M-03 9056A XJ15008-007 1 Nitrate - N M-03 9056A XJ15008-007 1 Sulfate M-03 9056A XJ15008-007 2 Sulfate M-03 8260D XJ15008-008 1 Vinyl chloride M-03 8260D XJ15008-008 2 1,4-Dichlorobenzene M-03 9056A XJ15008-012 1 Sulfate M-03 8260D XJ15008-012 2 Tetrachloroethene M-03 9056A XJ15008-013 1 Nitrate - N M-03 9056A XJ15008-014 1 Sulfate M-03 RSK - 175 XJ15008-014 1 Methane M-03 8260D XJ15008-017 1 1,1,1-Trichloroethane M-03 RSK - 175 XQ58394-001 1 Methane M-03 RSK - 175 XQ60577-001 1 Methane M-03 8260D XJ15008-006MS 2 Acetone M-03 8260D XJ15008-006MD 2 Acetone M-03 8260D XJ15008-006MD 2 2-Butanone (MEK) M-01 8260D XJ15008-006MD 2 Carbon tetrachloride M-01 8260D XJ15008-006MS 2 Dibromofluoromethane M-01 RSK - 175 XQ60512-001 1 Methane M-03 RSK - 175 XQ58581-001 1 Methane M-03 8260D XQ60216-002 1 2-Butanone (MEK) M-03 8260D XQ60464-002 1 Acetone 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: XJ15008

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

Sample Number Sample ID Matrix Date Sampled Date Received 001 10/14/2022 110012SW-1 Aqueous 10/15/2022 002 10/14/2022 110012SW-1-c Aqueous 10/15/2022 003 10/14/2022 110512MW-45S Aqueous 10/15/2022 004 10/14/2022 112012MW-18S Aqueous 10/15/2022 005 10/14/2022 112512SW-2 Aqueous 10/15/2022 006 10/14/2022 121512MW-20S Aqueous 10/15/2022 007 10/14/2022 123012MW-26S Aqueous 10/15/2022 008 10/14/2022 123512MW-48S Aqueous 10/15/2022 009 10/14/2022 132012MW-25S Aqueous 10/15/2022 010 10/14/2022 133012MW-19S Aqueous 10/15/2022 011 10/14/2022 133512MW-09S Aqueous 10/15/2022 012 10/14/2022 143012MW-36S Aqueous 10/15/2022 013 10/14/2022 143012MW-36S-a Aqueous 10/15/2022 014 10/14/2022 145512MW-44S Aqueous 10/15/2022 015 10/14/2022 150012MW-22S Aqueous 10/15/2022 016 10/14/2022 154012MW-47S Aqueous 10/15/2022 017 10/14/2022 160012MW-02S Aqueous 10/15/2022 018 10/14/2022 161212PZ-10 Aqueous 10/15/2022 019 10/14/2022 164012SW-3 Aqueous 10/15/2022 020 10/14/2022 165512SW-4 Aqueous 10/15/2022

(20 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 12SW-1 Aqueous 1,4-Dioxane 8270E (SIM) 0.16 J ug/L 26 003 12MW-45S Aqueous Alkalinity @ pH 4.5 su SM 2320B- 1500 mg CaCO3/L 29 003 12MW-45S Aqueous Nitrite - N 9056A 0.0056 JL mg/L 29 003 12MW-45S Aqueous TOC SM 5310C- 48 mg/L 29 003 12MW-45S Aqueous Chloroethane 8260D 430 H ug/L 32 003 12MW-45S Aqueous 1,1-Dichloroethane 8260D 53 H ug/L 32 003 12MW-45S Aqueous cis-1,2-Dichloroethene 8260D 4.1 HJ ug/L 32 003 12MW-45S Aqueous Tetrachloroethene 8260D 3.5 HJ ug/L 33 003 12MW-45S Aqueous Vinyl chloride 8260D 170 H ug/L 33 003 12MW-45S Aqueous 1,4-Dioxane 8270E (SIM) 160 ug/L 34 003 12MW-45S Aqueous Ethene RSK - 175 51 ug/L 35 003 12MW-45S Aqueous Methane RSK - 175 5500 BHM-03 ug/L 36 003 12MW-45S Aqueous Iron 6020B 15000 ug/L 37 003 12MW-45S Aqueous Dissolved Iron 6020B 730 ug/L 38 004 12MW-18S Aqueous 1,1-Dichloroethane 8260D 8.0 H ug/L 41 004 12MW-18S Aqueous 1,1-Dichloroethene 8260D 270 H ug/L 41 004 12MW-18S Aqueous cis-1,2-Dichloroethene 8260D 27 H ug/L 41 004 12MW-18S Aqueous Trichloroethene 8260D 12 H ug/L 42 004 12MW-18S Aqueous Vinyl chloride 8260D 70 H ug/L 42 004 12MW-18S Aqueous 1,4-Dioxane 8270E (SIM) 5.2 ug/L 43 005 12SW-2 Aqueous 1,4-Dioxane 8270E (SIM) 0.29 ug/L 46 006 12MW-20S Aqueous Benzene 8260D 0.53 HJ ug/L 49 006 12MW-20S Aqueous Chloroethane 8260D 0.91 HJ ug/L 49 006 12MW-20S Aqueous 1,1-Dichloroethane 8260D 0.65 HJ ug/L 49 006 12MW-20S Aqueous 1,1-Dichloroethene 8260D 1.5 H ug/L 49 006 12MW-20S Aqueous 1,4-Dioxane 8270E (SIM) 5.8 S ug/L 51 007 12MW-26S Aqueous Alkalinity @ pH 4.5 su SM 2320B- 310 mg CaCO3/L 52 007 12MW-26S Aqueous TOC SM 5310C- 7.3 mg/L 52 007 12MW-26S Aqueous Chloroethane 8260D 130 ug/L 53 007 12MW-26S Aqueous 1,2-Dichloroethane 8260D 7.3 ug/L 53 007 12MW-26S Aqueous trans-1,2-Dichloroethene 8260D 1.2 ug/L 53 007 12MW-26S Aqueous Tetrachloroethene 8260D 1.4 ug/L 54 007 12MW-26S Aqueous Toluene 8260D 3.4 ug/L 54 007 12MW-26S Aqueous 1,1,2-Trichloroethane 8260D 1.5 ug/L 54 007 12MW-26S Aqueous Trichloroethene 8260D 13 ug/L 54 007 12MW-26S Aqueous 1,1-Dichloroethane 8260D 320 H ug/L 55 007 12MW-26S Aqueous 1,1-Dichloroethene 8260D 340 H ug/L 55 007 12MW-26S Aqueous cis-1,2-Dichloroethene 8260D 480 H ug/L 55 007 12MW-26S Aqueous Vinyl chloride 8260D 410 H ug/L 56 007 12MW-26S Aqueous 1,4-Dioxane 8270E (SIM) 360 ug/L 57 007 12MW-26S Aqueous Ethane RSK - 175 30 ug/L 58 007 12MW-26S Aqueous Ethene RSK - 175 160 ug/L 58 007 12MW-26S Aqueous Methane RSK - 175 6400 BH ug/L 59

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Detection Summary (Continued)

Sample Sample ID Matrix Parameter Method Result Q Units Page 007 12MW-26S Aqueous Iron 6020B 13000 ug/L 60 007 12MW-26S Aqueous Dissolved Iron 6020B 1500 ug/L 61 008 12MW-48S Aqueous 1,4-Dichlorobenzene 8260D 2.4 HM-03 ug/L 64 008 12MW-48S Aqueous 1,1-Dichloroethane 8260D 6.6 H ug/L 64 008 12MW-48S Aqueous 1,1-Dichloroethene 8260D 25 H ug/L 64 008 12MW-48S Aqueous Vinyl chloride 8260D 1.1 H ug/L 65 008 12MW-48S Aqueous 1,4-Dioxane 8270E (SIM) 20 ug/L 66 009 12MW-25S Aqueous Benzene 8260D 0.53 HJ ug/L 69 009 12MW-25S Aqueous Vinyl chloride 8260D 1.4 H ug/L 70 009 12MW-25S Aqueous 1,4-Dioxane 8270E (SIM) 2.8 ug/L 71 010 12MW-19S Aqueous Benzene 8260D 1.3 ug/L 72 010 12MW-19S Aqueous Chloroethane 8260D 0.73 J ug/L 72 010 12MW-19S Aqueous Toluene 8260D 0.54 J ug/L 73 010 12MW-19S Aqueous 1,4-Dioxane 8270E (SIM) 4.5 ug/L 74 011 12MW-09S Aqueous 1,4-Dioxane 8270E (SIM) 0.18 J ug/L 77 012 12MW-36S Aqueous Nitrate - N 9056A 0.011 BJ mg/L 78 012 12MW-36S Aqueous Sulfate 9056A 52 M-03 mg/L 78 012 12MW-36S Aqueous TOC SM 5310C- 4.9 mg/L 78 012 12MW-36S Aqueous 1,1-Dichloroethane 8260D 13 H ug/L 81 012 12MW-36S Aqueous 1,1-Dichloroethene 8260D 74 H ug/L 81 012 12MW-36S Aqueous cis-1,2-Dichloroethene 8260D 41 H ug/L 81 012 12MW-36S Aqueous Tetrachloroethene 8260D 4.2 HM-03 ug/L 82 012 12MW-36S Aqueous Trichloroethene 8260D 44 H ug/L 82 012 12MW-36S Aqueous Vinyl chloride 8260D 11 H ug/L 82 012 12MW-36S Aqueous 1,4-Dioxane 8270E (SIM) 1.1 Q ug/L 83 012 12MW-36S Aqueous Ethene RSK - 175 6.0 J ug/L 84 012 12MW-36S Aqueous Methane RSK - 175 940 B ug/L 84 012 12MW-36S Aqueous Iron 6020B 4500 ug/L 85 012 12MW-36S Aqueous Dissolved Iron 6020B 27 J ug/L 86 013 12MW-36S-a Aqueous Nitrate - N 9056A 0.016 BJM-03 mg/L 87 013 12MW-36S-a Aqueous Sulfate 9056A 53 mg/L 87 013 12MW-36S-a Aqueous TOC SM 5310C- 4.2 mg/L 87 013 12MW-36S-a Aqueous Chloroethane 8260D 0.43 J ug/L 88 013 12MW-36S-a Aqueous 1,1-Dichloroethane 8260D 15 ug/L 88 013 12MW-36S-a Aqueous 1,1-Dichloroethene 8260D 88 ug/L 88 013 12MW-36S-a Aqueous cis-1,2-Dichloroethene 8260D 48 ug/L 88 013 12MW-36S-a Aqueous Tetrachloroethene 8260D 3.3 ug/L 89 013 12MW-36S-a Aqueous Trichloroethene 8260D 43 ug/L 89 013 12MW-36S-a Aqueous Vinyl chloride 8260D 13 ug/L 89 013 12MW-36S-a Aqueous 1,4-Dioxane 8270E (SIM) 1.1 ug/L 90 013 12MW-36S-a Aqueous Ethene RSK - 175 6.5 J ug/L 91 013 12MW-36S-a Aqueous Methane RSK - 175 980 B ug/L 91 013 12MW-36S-a Aqueous Iron 6020B 5000 ug/L 92 013 12MW-36S-a Aqueous Dissolved Iron 6020B 460 ug/L 93 014 12MW-44S Aqueous Alkalinity @ pH 4.5 su SM 2320B- 96 mg CaCO3/L 94 014 12MW-44S Aqueous Nitrate - N 9056A 0.032 B mg/L 94 014 12MW-44S Aqueous Sulfate 9056A 17 M-03 mg/L 94 014 12MW-44S Aqueous TOC SM 5310C- 2.0 mg/L 94

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Detection Summary (Continued)

Sample Sample ID Matrix Parameter Method Result Q Units Page 014 12MW-44S Aqueous 1,1-Dichloroethane 8260D 1.4 H ug/L 97 014 12MW-44S Aqueous 1,1-Dichloroethene 8260D 2.3 H ug/L 97 014 12MW-44S Aqueous Vinyl chloride 8260D 0.51 HJ ug/L 98 014 12MW-44S Aqueous 1,4-Dioxane 8270E (SIM) 9.6 ug/L 99 014 12MW-44S Aqueous Methane RSK - 175 25 BM-03 ug/L 100 014 12MW-44S Aqueous Iron 6020B 930 ug/L 101 014 12MW-44S Aqueous Dissolved Iron 6020B 260 ug/L 102 015 12MW-22S Aqueous Benzene 8260D 1.6 H ug/L 105 015 12MW-22S Aqueous Chloroethane 8260D 1.2 HJ ug/L 105 015 12MW-22S Aqueous 1,1-Dichloroethane 8260D 0.92 HJ ug/L 105 015 12MW-22S Aqueous 1,1-Dichloroethene 8260D 13 H ug/L 105 015 12MW-22S Aqueous cis-1,2-Dichloroethene 8260D 2.1 H ug/L 105 015 12MW-22S Aqueous Trichloroethene 8260D 3.4 H ug/L 106 015 12MW-22S Aqueous Vinyl chloride 8260D 7.9 H ug/L 106 015 12MW-22S Aqueous 1,4-Dioxane 8270E (SIM) 46 ug/L 107 016 12MW-47S Aqueous 1,1-Dichloroethene 8260D 0.75 HJ ug/L 110 016 12MW-47S Aqueous cis-1,2-Dichloroethene 8260D 0.41 HJ ug/L 110 016 12MW-47S Aqueous Trichloroethene 8260D 2.0 H ug/L 111 016 12MW-47S Aqueous 1,4-Dioxane 8270E (SIM) 0.22 ug/L 112 017 12MW-02S Aqueous 1,1-Dichloroethane 8260D 23 H ug/L 115 017 12MW-02S Aqueous 1,1-Dichloroethene 8260D 390 H ug/L 115 017 12MW-02S Aqueous cis-1,2-Dichloroethene 8260D 130 H ug/L 115 017 12MW-02S Aqueous Tetrachloroethene 8260D 29 H ug/L 116 017 12MW-02S Aqueous Toluene 8260D 3.6 HJ ug/L 116 017 12MW-02S Aqueous Trichloroethene 8260D 21 H ug/L 116 017 12MW-02S Aqueous Vinyl chloride 8260D 19 H ug/L 116 017 12MW-02S Aqueous 1,4-Dioxane 8270E (SIM) 0.28 ug/L 117 018 12PZ-10 Aqueous 1,1-Dichloroethane 8260D 3.8 H ug/L 120 018 12PZ-10 Aqueous 1,1-Dichloroethene 8260D 2.8 H ug/L 120 018 12PZ-10 Aqueous 1,4-Dioxane 8270E (SIM) 5.2 ug/L 122 019 12SW-3 Aqueous 1,4-Dioxane 8270E (SIM) 0.13 J ug/L 127 020 12SW-4 Aqueous Acetone 8260D 9.5 HJ ug/L 130 020 12SW-4 Aqueous 1,4-Dioxane 8270E (SIM) 0.17 J ug/L 132 (124 detections)

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Volatile Organic Compounds by GC/MS Description: Matrix:

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12SW-1

XJ15008-001

10/14/2022 1100 10/15/2022

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 10/27/2022 1801 CDA 58401

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

12SW-1

XJ15008-001

10/14/2022 1100 10/15/2022

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 10/27/2022 1801 CDA 58401

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 99 85-114 Dibromofluoromethane 107 80-119 1,2-Dichloroethane-d4 108 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.)

Semivolatile Organic Compounds by GC/MS (SIM)

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12SW-1

XJ15008-001

10/14/2022 1100 10/15/2022

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) 1 10/25/2022 1341 JCG 10/21/2022 2052 57806

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 1,4-Dioxane 123-91-1 8270E (SIM) 0.16 J 1ug/L0.0680.20 0.14

AcceptanceRun 1Surrogate Q % Recovery Limits 1,4-Dioxane-d8 80 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

12SW-1-c

XJ15008-002

10/14/2022 1100 10/15/2022

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 10/27/2022 1411 CDA 58401

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

12SW-1-c

XJ15008-002

10/14/2022 1100 10/15/2022

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 10/27/2022 1411 CDA 58401

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 104 80-119 1,2-Dichloroethane-d4 103 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.)

Inorganic non-metals

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-45S

XJ15008-003

10/14/2022 1105 10/15/2022

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 10/20/2022 2027 TAD 57724

1 (Nitrate - N) 9056A 1 10/15/2022 1622 BMG2 58616 3 (Nitrate - N) 9056A 25 11/22/2022 2104 SJL 60887 1 (Nitrite - N) 9056A 1 10/15/2022 1622 BMG2 58620 1 (Sulfate) 9056A 1 10/15/2022 1622 BMG2 58621 3 (Sulfate) 9056A 25 11/22/2022 2104 SJL 60890

1 (TOC) SM 5310C-2014 1 11/10/2022 0257 CMM 59568

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Alkalinity @ pH 4.5 su SM 2320B-2011 1500 1mg CaCO3/L2020 20 Nitrite - N 9056A 0.0056 JL 1mg/L0.00500.020 0.010 Nitrate - N 9056A 13 BEM-03 1mg/L0.00500.020 0.010 TOC SM 5310C-2014 48 1mg/L0.602.0 1.5 Sulfate 9056A 0.50 U 1mg/L0.251.0 0.50 Nitrate - N 9056A 0.25 UH 3mg/L0.130.50 0.25 Sulfate 9056A 13 UHM-03 3mg/L6.325 13

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-45S

XJ15008-003

10/14/2022 1105 10/15/2022

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 10/28/2022 0304 JMM2 58473

2 5030B 8260D 5 11/16/2022 0512 BBW 60222

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

Acetone 67-64-1 8260D 10 U 1ug/L5.020 10 Benzene 71-43-2 8260D 0.80 U 1ug/L0.401.0 0.80 Bromobenzene 108-86-1 8260D 0.80 U 1ug/L0.401.0 0.80 Bromodichloromethane 75-27-4 8260D 0.80 U 1ug/L0.401.0 0.80 Bromoform 75-25-2 8260D 0.80 U 1ug/L0.401.0 0.80 Bromomethane (Methyl bromide) 74-83-9 8260D 0.80 U 1ug/L0.402.0 0.80 2-Butanone (MEK) 78-93-3 8260D 4.0 U 1ug/L2.010 4.0 n-Butylbenzene 104-51-8 8260D 0.80 U 1ug/L0.401.0 0.80 Carbon disulfide 75-15-0 8260D 0.41 J 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 440 E 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 60 1ug/L0.401.0 0.80 1,2-Dichloroethane 107-06-2 8260D 0.42 J 1ug/L0.401.0 0.80 1,1-Dichloroethene 75-35-4 8260D 1.7 1ug/L0.401.0 0.80 cis-1,2-Dichloroethene 156-59-2 8260D 4.8 1ug/L0.401.0 0.80 trans-1,2-Dichloroethene 156-60-5 8260D 0.80 U 1ug/L0.401.0 0.80 1,2-Dichloropropane 78-87-5 8260D 0.80 U 1ug/L0.401.0 0.80 cis-1,3-Dichloropropene 10061-01-5 8260D 0.80 U 1ug/L0.401.0 0.80 trans-1,3-Dichloropropene 10061-02-6 8260D 0.80 U 1ug/L0.401.0 0.80 Ethylbenzene 100-41-4 8260D 0.80 U 1ug/L0.401.0 0.80 Hexachlorobutadiene 87-68-3 8260D 0.80 U 1ug/L0.401.0 0.80 2-Hexanone 591-78-6 8260D 4.0 U 1ug/L2.010 4.0 Isopropylbenzene 98-82-8 8260D 0.80 U 1ug/L0.401.0 0.80 Methyl tertiary butyl ether (MTBE) 1634-04-4 8260D 0.80 U 1ug/L0.401.0 0.80 4-Methyl-2-pentanone 108-10-1 8260D 4.0 U 1ug/L2.010 4.0 Methylene chloride 75-09-2 8260D 0.80 U 1ug/L0.401.0 0.80 Naphthalene 91-20-3 8260D 0.80 U 1ug/L0.401.0 0.80 n-Propylbenzene 103-65-1 8260D 0.80 U 1ug/L0.401.0 0.80 Styrene 100-42-5 8260D 0.82 U 1ug/L0.411.0 0.82 1,1,1,2-Tetrachloroethane 630-20-6 8260D 0.80 U 1ug/L0.401.0 0.80

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

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

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

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

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

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-45S

XJ15008-003

10/14/2022 1105 10/15/2022

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 10/28/2022 0304 JMM2 58473

2 5030B 8260D 5 11/16/2022 0512 BBW 60222

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD

1,1,2,2-Tetrachloroethane 79-34-5 8260D 0.80 U 1ug/L0.401.0 0.80 Tetrachloroethene 127-18-4 8260D 4.0 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 J 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 210 E 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 88 85-114 H 97 85-114 Dibromofluoromethane 93 80-119 H 101 80-119 1,2-Dichloroethane-d4 89 81-118 H 96 81-118 Toluene-d8 98 89-112 H 97 89-112

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

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

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

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

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

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-45S

XJ15008-003

10/14/2022 1105 10/15/2022

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 10/28/2022 0304 JMM2 58473

2 5030B 8260D 5 11/16/2022 0512 BBW 60222

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 430 H 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 UH 2ug/L3.010 6.0 1,1-Dichloroethane 75-34-3 8260D 53 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 4.0 UH 2ug/L2.05.0 4.0 cis-1,2-Dichloroethene 156-59-2 8260D 4.1 HJ 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-45S

XJ15008-003

10/14/2022 1105 10/15/2022

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 10/28/2022 0304 JMM2 58473

2 5030B 8260D 5 11/16/2022 0512 BBW 60222

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 3.5 HJ 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 4.0 UH 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 170 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 88 85-114 H 97 85-114 Dibromofluoromethane 93 80-119 H 101 80-119 1,2-Dichloroethane-d4 89 81-118 H 96 81-118 Toluene-d8 98 89-112 H 97 89-112

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

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

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

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

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

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-45S

XJ15008-003

10/14/2022 1105 10/15/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch1 3520C 8270E (SIM) 100 10/31/2022 2157 JCG 10/21/2022 2052 57806

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD 1,4-Dioxane 123-91-1 8270E (SIM) 160 1ug/L6.820 14

AcceptanceRun 1Surrogate Q % Recovery Limits 1,4-Dioxane-d8 89 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-45S

XJ15008-003

10/14/2022 1105 10/15/2022

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 10/27/2022 1701 BBW 58394

2 RSK - 175 20 11/19/2022 0202 BBW 60577

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 51 1ug/L2.510 5.0 Methane 74-82-8 RSK - 175 13000 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.)

Dissolved Gases

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-45S

XJ15008-003

10/14/2022 1105 10/15/2022

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 10/27/2022 1701 BBW 58394

2 RSK - 175 20 11/19/2022 0202 BBW 60577

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 5500 BHM-03 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-45S

XJ15008-003

10/14/2022 1105 10/15/2022

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 11/09/2022 1604 BNW 11/08/2022 1447 57541

AnalyticalCASParameter Number Method Result Q LOQ Units RunDLLOD Iron 7439-89-6 6020B 15000 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.)

Metals

Date Received:

Client: Laboratory ID:

Date Sampled:

AECOM

12MW-45S

XJ15008-003

10/14/2022 1105 10/15/2022

Aqueous Project Name: JBC Weapons SWMU 12

Project Number: 60444074.0013AC.H Run Prep Method Analytical…