MO-5392_18748_CA_WSW_20240612

3502 Hayes Road • Monroe, North Carolina 28110
113 West Firetower Road, Suite G • Winterville, North Carolina 28590
Phone [phone] • [phone] • Fax [phone]
Engineering Certification: C-2727 • Geology Certification: C-127
June 12, 2024

Mr. Brad Newton
North Carolina Department of Environmental Quality
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville, NC 28115

Re: Water Supply Well Sampling Activities
Gate #402
2520 Bessemer City Road
Bessemer City, North Carolina
Gaston County
Incident #18748
GRI Project #2451

Dear Mr. Newton,

Geological Resources, Inc. (GRI) presents the results of the water supply well sampling activities at the
Gate #402 site in Bessemer City, North Carolina. The activities were conducted in response to the
January 8, 2024 correspondence from NCDEQ.

On June 3, 2024, GRI collected ground water samples from water supply wells WSW-4, WSW-9, and
WSW-10. The samples were submitted for analyses of VOCs by EPA Method 6200B.

Please see the attached laboratory report for the results of the June 2024 ground water sampling event.
The concentration of PCE (2.52 ug/L) reported in the ground water sample collected from WSW-9
exceeded the MAC (0.7 ug/L). Concentrations of chloroform (0.499 J ug/L) and PCE (0.551 ug/L) that did
not exceed the MACs were measured in the ground water sample collected from WSW-10. A copy of the
laboratory report is included as Appendix A. Please note that PCE and chloroform are not generally
associated with a petroleum release. GRI’s June 15, 2023 review of historical analytical data, which
strongly suggested that the former Bessemer City Road PCE site is the source of the PCE found in these
water supply wells, is included as Appendix B.

Please contact me at 704-845-4010 or [e-mail] with any questions or comments.

Sincerely,

Eric M. Eubanks, P.G.
Project Manager

APPENDICES

APPENDIX A
Laboratory Report - Ground Water Samples

Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the
analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.

6/7/2024
Geological Resources, Inc. Eric Eubanks
3502 Hayes Road Monroe, NC, 28110
Ref: Analytical Testing
Lab Report Number: 24-155-0008 Client Project Description: Gate #402
GRI #2451
Dear Eric Eubanks:
Waypoint Analytical, LLC (Charlotte) received sample(s) on 6/3/2024 for the analyses presented in the following report.
The above referenced project has been analyzed per your instructions. The analyses were performed in
accordance with the applicable analytical method.
The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all
parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of
sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance.
The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as-
received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information.
Sincerely,
Danyale Love Project Manager
Page 1 of 29
Certification Summary
Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC
State Program Lab ID Expiration Date
07/31/202437735State ProgramNorth Carolina
12/31/2024402State ProgramNorth Carolina
07/31/202499012State ProgramSouth Carolina
12/31/202499012State ProgramSouth Carolina
Page 1 of 1 00016/24-155-0008
Page 2 of 29
Report Number:
Sample Summary Table
Client Project Description:
24-155-0008
Gate #402
GRI #2451
Lab No Client Sample ID Matrix Date Collected Date Received
06/03/2024 09:07Aqueous 94715 WSW-10 06/03/2024 12:41
06/03/2024 08:55Aqueous 94716 WSW-9 06/03/2024 12:41
06/03/2024 08:45Aqueous 94717 WSW-4 06/03/2024 12:41
06/03/2024 08:35Aqueous 94718 Trip Blank 06/03/2024 12:41
Page 3 of 29
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
24-155-0008
Report Limit
Project:Gate #402
V 94715WSW-10
J0.499 06/06/2024 23:326200BChloroformµg/L 0.220
0.551 06/06/2024 23:326200BTetrachloroetheneµg/L 0.220
V 94716WSW-9
2.52 06/06/2024 23:576200BTetrachloroetheneµg/L 0.220
V 94718Trip Blank
J2.02 06/06/2024 19:486200BAcetoneµg/L 1.80
Page 4 of 29

Client: Geological Resources, Inc. CASE NARRATIVE
Project: Gate #402 Lab Report Number: 24-155-0008
Date: 6/7/2024
Volatile Organic Compounds - GC/MS Method 6200B Analyte: 1,3-Dichloropropane QC Batch No: V48278/V48276
Relative Percent Difference (RPD) for the duplicate analysis was outside of the allowable QC limits.
Analyte: 4-Methyl-2-pentanone QC Batch No: V48278/V48276
This target analyte was flagged for recoveries outside QC limits in the associated CCV. Results should be considered estimated due to the potential for a high bias.
Analyte: Bromodichloromethane
QC Batch No: V48278/V48276 Relative Percent Difference (RPD) for the duplicate analysis was outside of the allowable QC limits.
Analyte: Chloroethane
QC Batch No: V48278/V48276 Recovery for the LCS exceeded the upper acceptance limit. However, all sample results associated with the
batch are below the MQL, so this high bias had no impact upon the client data. The results are considered to be acceptable.
Analyte: cis-1,3-Dichloropropene QC Batch No: V48278/V48276 Relative Percent Difference (RPD) for the duplicate analysis was outside of the allowable QC limits.
Analyte: Toluene
QC Batch No: V48278/V48276 This target analyte was flagged for recoveries outside QC limits in the associated CCV. Results should be
considered estimated due to the potential for a high bias. Analyte: Toluene QC Batch No: V48278/V48276
Relative Percent Difference (RPD) for the duplicate analysis was outside of the allowable QC limits.

Page 5 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-10
94715 Matrix:
6/3/2024 9:07
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<1.80 µg/L 1.80 10.0Acetone 1 06/06/24 23:32 V48278MSA
<0.180 µg/L 0.180 0.500Benzene 1 06/06/24 23:32 V48278MSA
<0.210 µg/L 0.210 0.500Bromobenzene 1 06/06/24 23:32 V48278MSA
<0.420 µg/L 0.420 1.00Bromochloromethane 1 06/06/24 23:32 V48278MSA
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 06/06/24 23:32 V48278MSA
<1.50 µg/L 1.50 5.00Bromoform 1 06/06/24 23:32 V48278MSA
<0.280 µg/L 0.280 1.00Bromomethane 1 06/06/24 23:32 V48278MSA
<0.180 µg/L 0.180 0.500n-Butylbenzene 1 06/06/24 23:32 V48278MSA
<0.200 µg/L 0.200 0.500sec-Butyl benzene 1 06/06/24 23:32 V48278MSA
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 06/06/24 23:32 V48278MSA
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 06/06/24 23:32 V48278MSA
<0.190 µg/L 0.190 0.500Chlorobenzene 1 06/06/24 23:32 V48278MSA
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 06/06/24 23:32 V48278MSA
<0.430 µg/L 0.430 1.00Chloroethane 1 06/06/24 23:32 V48278MSA
0.499 J µg/L 0.220 0.500Chloroform 1 06/06/24 23:32 V48278MSA
<0.220 µg/L 0.220 0.500Chloromethane 1 06/06/24 23:32 V48278MSA
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 06/06/24 23:32 V48278MSA
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 06/06/24 23:32 V48278MSA
<0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 06/06/24 23:32 V48278MSA
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 06/06/24 23:32 V48278MSA
<0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 06/06/24 23:32 V48278MSA
<0.230 µg/L 0.230 0.500Dibromomethane 1 06/06/24 23:32 V48278MSA
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 06/06/24 23:32 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 6 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-10
94715 Matrix:
6/3/2024 9:07
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 06/06/24 23:32 V48278MSA
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 06/06/24 23:32 V48278MSA
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 06/06/24 23:32 V48278MSA
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 06/06/24 23:32 V48278MSA
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 06/06/24 23:32 V48278MSA
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 06/06/24 23:32 V48278MSA
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 06/06/24 23:32 V48278MSA
<0.180 µg/L 0.180 0.500trans-1,2-Dichloroethene 1 06/06/24 23:32 V48278MSA
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 06/06/24 23:32 V48278MSA
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 06/06/24 23:32 V48278MSA
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 06/06/24 23:32 V48278MSA
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 06/06/24 23:32 V48278MSA
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 06/06/24 23:32 V48278MSA
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 06/06/24 23:32 V48278MSA
<42.0 µg/L 42.0 200Ethanol 1 06/06/24 23:32 V48278MSA
<0.170 µg/L 0.170 0.500Ethylbenzene 1 06/06/24 23:32 V48278MSA
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 06/06/24 23:32 V48278MSA
<0.380 µg/L 0.380 1.002-Hexanone 1 06/06/24 23:32 V48278MSA
<0.180 µg/L 0.180 0.500Isopropylbenzene 1 06/06/24 23:32 V48278MSA
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 06/06/24 23:32 V48278MSA
<0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 06/06/24 23:32 V48278MSA
<0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 06/06/24 23:32 V48278MSA
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 06/06/24 23:32 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 7 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-10
94715 Matrix:
6/3/2024 9:07
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.330 µg/L 0.330 2.00Methylene Chloride 1 06/06/24 23:32 V48278MSA
<0.470 µg/L 0.470 1.00Naphthalene 1 06/06/24 23:32 V48278MSA
<0.190 µg/L 0.190 0.500n-Propylbenzene 1 06/06/24 23:32 V48278MSA
<0.220 µg/L 0.220 0.500Styrene 1 06/06/24 23:32 V48278MSA
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 06/06/24 23:32 V48278MSA
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 06/06/24 23:32 V48278MSA
0.551 µg/L 0.220 0.500Tetrachloroethene 1 06/06/24 23:32 V48278MSA
<0.220 µg/L 0.220 0.500Toluene 1 06/06/24 23:32 V48278MSA
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 06/06/24 23:32 V48278MSA
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 06/06/24 23:32 V48278MSA
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 06/06/24 23:32 V48278MSA
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 06/06/24 23:32 V48278MSA
<0.180 µg/L 0.180 0.500Trichloroethene 1 06/06/24 23:32 V48278MSA
<0.180 µg/L 0.180 0.500Trichlorofluoromethane 1 06/06/24 23:32 V48278MSA
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 06/06/24 23:32 V48278MSA
<0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 06/06/24 23:32 V48278MSA
<0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 06/06/24 23:32 V48278MSA
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 06/06/24 23:32 V48278MSA
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 06/06/24 23:32 V48278MSA
<0.210 µg/L 0.210 0.500o-Xylene 1 06/06/24 23:32 V48278MSA
<0.420 µg/L 0.420 1.00m,p-Xylene 1 06/06/24 23:32 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 8 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-10
94715 Matrix:
6/3/2024 9:07
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.21 µg/L 0.210 0.500Xylene (Total)1 06/06/24 23:32 V48278
Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%06/06/24 23:321 MSA V48278
Surrogate: Dibromofluoromethane 94.2 Limits: 70-130%06/06/24 23:321 MSA V48278
Surrogate: 1,2-Dichloroethane - d4 94.0 Limits: 70-130%06/06/24 23:321 MSA V48278
Surrogate: Toluene-d8 80.8 Limits: 70-130%06/06/24 23:321 MSA V48278
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 9 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-9
94716 Matrix:
6/3/2024 8:55
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<1.80 µg/L 1.80 10.0Acetone 1 06/06/24 23:57 V48278MSA
<0.180 µg/L 0.180 0.500Benzene 1 06/06/24 23:57 V48278MSA
<0.210 µg/L 0.210 0.500Bromobenzene 1 06/06/24 23:57 V48278MSA
<0.420 µg/L 0.420 1.00Bromochloromethane 1 06/06/24 23:57 V48278MSA
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 06/06/24 23:57 V48278MSA
<1.50 µg/L 1.50 5.00Bromoform 1 06/06/24 23:57 V48278MSA
<0.280 µg/L 0.280 1.00Bromomethane 1 06/06/24 23:57 V48278MSA
<0.180 µg/L 0.180 0.500n-Butylbenzene 1 06/06/24 23:57 V48278MSA
<0.200 µg/L 0.200 0.500sec-Butyl benzene 1 06/06/24 23:57 V48278MSA
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 06/06/24 23:57 V48278MSA
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 06/06/24 23:57 V48278MSA
<0.190 µg/L 0.190 0.500Chlorobenzene 1 06/06/24 23:57 V48278MSA
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 06/06/24 23:57 V48278MSA
<0.430 µg/L 0.430 1.00Chloroethane 1 06/06/24 23:57 V48278MSA
<0.220 µg/L 0.220 0.500Chloroform 1 06/06/24 23:57 V48278MSA
<0.220 µg/L 0.220 0.500Chloromethane 1 06/06/24 23:57 V48278MSA
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 06/06/24 23:57 V48278MSA
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 06/06/24 23:57 V48278MSA
<0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 06/06/24 23:57 V48278MSA
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 06/06/24 23:57 V48278MSA
<0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 06/06/24 23:57 V48278MSA
<0.230 µg/L 0.230 0.500Dibromomethane 1 06/06/24 23:57 V48278MSA
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 06/06/24 23:57 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 10 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-9
94716 Matrix:
6/3/2024 8:55
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 06/06/24 23:57 V48278MSA
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 06/06/24 23:57 V48278MSA
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 06/06/24 23:57 V48278MSA
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 06/06/24 23:57 V48278MSA
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 06/06/24 23:57 V48278MSA
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 06/06/24 23:57 V48278MSA
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 06/06/24 23:57 V48278MSA
<0.180 µg/L 0.180 0.500trans-1,2-Dichloroethene 1 06/06/24 23:57 V48278MSA
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 06/06/24 23:57 V48278MSA
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 06/06/24 23:57 V48278MSA
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 06/06/24 23:57 V48278MSA
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 06/06/24 23:57 V48278MSA
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 06/06/24 23:57 V48278MSA
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 06/06/24 23:57 V48278MSA
<42.0 µg/L 42.0 200Ethanol 1 06/06/24 23:57 V48278MSA
<0.170 µg/L 0.170 0.500Ethylbenzene 1 06/06/24 23:57 V48278MSA
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 06/06/24 23:57 V48278MSA
<0.380 µg/L 0.380 1.002-Hexanone 1 06/06/24 23:57 V48278MSA
<0.180 µg/L 0.180 0.500Isopropylbenzene 1 06/06/24 23:57 V48278MSA
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 06/06/24 23:57 V48278MSA
<0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 06/06/24 23:57 V48278MSA
<0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 06/06/24 23:57 V48278MSA
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 06/06/24 23:57 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 11 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-9
94716 Matrix:
6/3/2024 8:55
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.330 µg/L 0.330 2.00Methylene Chloride 1 06/06/24 23:57 V48278MSA
<0.470 µg/L 0.470 1.00Naphthalene 1 06/06/24 23:57 V48278MSA
<0.190 µg/L 0.190 0.500n-Propylbenzene 1 06/06/24 23:57 V48278MSA
<0.220 µg/L 0.220 0.500Styrene 1 06/06/24 23:57 V48278MSA
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 06/06/24 23:57 V48278MSA
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 06/06/24 23:57 V48278MSA
2.52 µg/L 0.220 0.500Tetrachloroethene 1 06/06/24 23:57 V48278MSA
<0.220 µg/L 0.220 0.500Toluene 1 06/06/24 23:57 V48278MSA
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 06/06/24 23:57 V48278MSA
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 06/06/24 23:57 V48278MSA
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 06/06/24 23:57 V48278MSA
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 06/06/24 23:57 V48278MSA
<0.180 µg/L 0.180 0.500Trichloroethene 1 06/06/24 23:57 V48278MSA
<0.180 µg/L 0.180 0.500Trichlorofluoromethane 1 06/06/24 23:57 V48278MSA
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 06/06/24 23:57 V48278MSA
<0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 06/06/24 23:57 V48278MSA
<0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 06/06/24 23:57 V48278MSA
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 06/06/24 23:57 V48278MSA
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 06/06/24 23:57 V48278MSA
<0.210 µg/L 0.210 0.500o-Xylene 1 06/06/24 23:57 V48278MSA
<0.420 µg/L 0.420 1.00m,p-Xylene 1 06/06/24 23:57 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 12 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-9
94716 Matrix:
6/3/2024 8:55
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.21 µg/L 0.210 0.500Xylene (Total)1 06/06/24 23:57 V48278
Surrogate: 4-Bromofluorobenzene 96.0 Limits: 70-130%06/06/24 23:571 MSA V48278
Surrogate: Dibromofluoromethane 79.8 Limits: 70-130%06/06/24 23:571 MSA V48278
Surrogate: 1,2-Dichloroethane - d4 78.4 Limits: 70-130%06/06/24 23:571 MSA V48278
Surrogate: Toluene-d8 96.4 Limits: 70-130%06/06/24 23:571 MSA V48278
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 13 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-4
94717 Matrix:
6/3/2024 8:45
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<1.80 µg/L 1.80 10.0Acetone 1 06/07/24 00:22 V48278MSA
<0.180 µg/L 0.180 0.500Benzene 1 06/07/24 00:22 V48278MSA
<0.210 µg/L 0.210 0.500Bromobenzene 1 06/07/24 00:22 V48278MSA
<0.420 µg/L 0.420 1.00Bromochloromethane 1 06/07/24 00:22 V48278MSA
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 06/07/24 00:22 V48278MSA
<1.50 µg/L 1.50 5.00Bromoform 1 06/07/24 00:22 V48278MSA
<0.280 µg/L 0.280 1.00Bromomethane 1 06/07/24 00:22 V48278MSA
<0.180 µg/L 0.180 0.500n-Butylbenzene 1 06/07/24 00:22 V48278MSA
<0.200 µg/L 0.200 0.500sec-Butyl benzene 1 06/07/24 00:22 V48278MSA
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 06/07/24 00:22 V48278MSA
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 06/07/24 00:22 V48278MSA
<0.190 µg/L 0.190 0.500Chlorobenzene 1 06/07/24 00:22 V48278MSA
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 06/07/24 00:22 V48278MSA
<0.430 µg/L 0.430 1.00Chloroethane 1 06/07/24 00:22 V48278MSA
<0.220 µg/L 0.220 0.500Chloroform 1 06/07/24 00:22 V48278MSA
<0.220 µg/L 0.220 0.500Chloromethane 1 06/07/24 00:22 V48278MSA
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 06/07/24 00:22 V48278MSA
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 06/07/24 00:22 V48278MSA
<0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 06/07/24 00:22 V48278MSA
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 06/07/24 00:22 V48278MSA
<0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 06/07/24 00:22 V48278MSA
<0.230 µg/L 0.230 0.500Dibromomethane 1 06/07/24 00:22 V48278MSA
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 06/07/24 00:22 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 14 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-4
94717 Matrix:
6/3/2024 8:45
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 06/07/24 00:22 V48278MSA
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 06/07/24 00:22 V48278MSA
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 06/07/24 00:22 V48278MSA
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 06/07/24 00:22 V48278MSA
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 06/07/24 00:22 V48278MSA
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 06/07/24 00:22 V48278MSA
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 06/07/24 00:22 V48278MSA
<0.180 µg/L 0.180 0.500trans-1,2-Dichloroethene 1 06/07/24 00:22 V48278MSA
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 06/07/24 00:22 V48278MSA
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 06/07/24 00:22 V48278MSA
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 06/07/24 00:22 V48278MSA
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 06/07/24 00:22 V48278MSA
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 06/07/24 00:22 V48278MSA
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 06/07/24 00:22 V48278MSA
<42.0 µg/L 42.0 200Ethanol 1 06/07/24 00:22 V48278MSA
<0.170 µg/L 0.170 0.500Ethylbenzene 1 06/07/24 00:22 V48278MSA
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 06/07/24 00:22 V48278MSA
<0.380 µg/L 0.380 1.002-Hexanone 1 06/07/24 00:22 V48278MSA
<0.180 µg/L 0.180 0.500Isopropylbenzene 1 06/07/24 00:22 V48278MSA
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 06/07/24 00:22 V48278MSA
<0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 06/07/24 00:22 V48278MSA
<0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 06/07/24 00:22 V48278MSA
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 06/07/24 00:22 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 15 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-4
94717 Matrix:
6/3/2024 8:45
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.330 µg/L 0.330 2.00Methylene Chloride 1 06/07/24 00:22 V48278MSA
<0.470 µg/L 0.470 1.00Naphthalene 1 06/07/24 00:22 V48278MSA
<0.190 µg/L 0.190 0.500n-Propylbenzene 1 06/07/24 00:22 V48278MSA
<0.220 µg/L 0.220 0.500Styrene 1 06/07/24 00:22 V48278MSA
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 06/07/24 00:22 V48278MSA
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 06/07/24 00:22 V48278MSA
<0.220 µg/L 0.220 0.500Tetrachloroethene 1 06/07/24 00:22 V48278MSA
<0.220 µg/L 0.220 0.500Toluene 1 06/07/24 00:22 V48278MSA
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 06/07/24 00:22 V48278MSA
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 06/07/24 00:22 V48278MSA
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 06/07/24 00:22 V48278MSA
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 06/07/24 00:22 V48278MSA
<0.180 µg/L 0.180 0.500Trichloroethene 1 06/07/24 00:22 V48278MSA
<0.180 µg/L 0.180 0.500Trichlorofluoromethane 1 06/07/24 00:22 V48278MSA
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 06/07/24 00:22 V48278MSA
<0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 06/07/24 00:22 V48278MSA
<0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 06/07/24 00:22 V48278MSA
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 06/07/24 00:22 V48278MSA
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 06/07/24 00:22 V48278MSA
<0.210 µg/L 0.210 0.500o-Xylene 1 06/07/24 00:22 V48278MSA
<0.420 µg/L 0.420 1.00m,p-Xylene 1 06/07/24 00:22 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 16 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:WSW-4
94717 Matrix:
6/3/2024 8:45
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.21 µg/L 0.210 0.500Xylene (Total)1 06/07/24 00:22 V48278
Surrogate: 4-Bromofluorobenzene 99.4 Limits: 70-130%06/07/24 00:221 MSA V48278
Surrogate: Dibromofluoromethane 77.6 Limits: 70-130%06/07/24 00:221 MSA V48278
Surrogate: 1,2-Dichloroethane - d4 78.4 Limits: 70-130%06/07/24 00:221 MSA V48278
Surrogate: Toluene-d8 112 Limits: 70-130%06/07/24 00:221 MSA V48278
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 17 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:Trip Blank
94718 Matrix:
6/3/2024 8:35
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
2.02 J µg/L 1.80 10.0Acetone 1 06/06/24 19:48 V48278MSA
<0.180 µg/L 0.180 0.500Benzene 1 06/06/24 19:48 V48278MSA
<0.210 µg/L 0.210 0.500Bromobenzene 1 06/06/24 19:48 V48278MSA
<0.420 µg/L 0.420 1.00Bromochloromethane 1 06/06/24 19:48 V48278MSA
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 06/06/24 19:48 V48278MSA
<1.50 µg/L 1.50 5.00Bromoform 1 06/06/24 19:48 V48278MSA
<0.280 µg/L 0.280 1.00Bromomethane 1 06/06/24 19:48 V48278MSA
<0.180 µg/L 0.180 0.500n-Butylbenzene 1 06/06/24 19:48 V48278MSA
<0.200 µg/L 0.200 0.500sec-Butyl benzene 1 06/06/24 19:48 V48278MSA
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 06/06/24 19:48 V48278MSA
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 06/06/24 19:48 V48278MSA
<0.190 µg/L 0.190 0.500Chlorobenzene 1 06/06/24 19:48 V48278MSA
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 06/06/24 19:48 V48278MSA
<0.430 µg/L 0.430 1.00Chloroethane 1 06/06/24 19:48 V48278MSA
<0.220 µg/L 0.220 0.500Chloroform 1 06/06/24 19:48 V48278MSA
<0.220 µg/L 0.220 0.500Chloromethane 1 06/06/24 19:48 V48278MSA
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 06/06/24 19:48 V48278MSA
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 06/06/24 19:48 V48278MSA
<0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 06/06/24 19:48 V48278MSA
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 06/06/24 19:48 V48278MSA
<0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 06/06/24 19:48 V48278MSA
<0.230 µg/L 0.230 0.500Dibromomethane 1 06/06/24 19:48 V48278MSA
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 06/06/24 19:48 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 18 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:Trip Blank
94718 Matrix:
6/3/2024 8:35
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 06/06/24 19:48 V48278MSA
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 06/06/24 19:48 V48278MSA
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 06/06/24 19:48 V48278MSA
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 06/06/24 19:48 V48278MSA
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 06/06/24 19:48 V48278MSA
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 06/06/24 19:48 V48278MSA
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 06/06/24 19:48 V48278MSA
<0.180 µg/L 0.180 0.500trans-1,2-Dichloroethene 1 06/06/24 19:48 V48278MSA
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 06/06/24 19:48 V48278MSA
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 06/06/24 19:48 V48278MSA
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 06/06/24 19:48 V48278MSA
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 06/06/24 19:48 V48278MSA
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 06/06/24 19:48 V48278MSA
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 06/06/24 19:48 V48278MSA
<42.0 µg/L 42.0 200Ethanol 1 06/06/24 19:48 V48278MSA
<0.170 µg/L 0.170 0.500Ethylbenzene 1 06/06/24 19:48 V48278MSA
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 06/06/24 19:48 V48278MSA
<0.380 µg/L 0.380 1.002-Hexanone 1 06/06/24 19:48 V48278MSA
<0.180 µg/L 0.180 0.500Isopropylbenzene 1 06/06/24 19:48 V48278MSA
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 06/06/24 19:48 V48278MSA
<0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 06/06/24 19:48 V48278MSA
<0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 06/06/24 19:48 V48278MSA
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 06/06/24 19:48 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 19 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:Trip Blank
94718 Matrix:
6/3/2024 8:35
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.330 µg/L 0.330 2.00Methylene Chloride 1 06/06/24 19:48 V48278MSA
<0.470 µg/L 0.470 1.00Naphthalene 1 06/06/24 19:48 V48278MSA
<0.190 µg/L 0.190 0.500n-Propylbenzene 1 06/06/24 19:48 V48278MSA
<0.220 µg/L 0.220 0.500Styrene 1 06/06/24 19:48 V48278MSA
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 06/06/24 19:48 V48278MSA
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 06/06/24 19:48 V48278MSA
<0.220 µg/L 0.220 0.500Tetrachloroethene 1 06/06/24 19:48 V48278MSA
<0.220 µg/L 0.220 0.500Toluene 1 06/06/24 19:48 V48278MSA
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 06/06/24 19:48 V48278MSA
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 06/06/24 19:48 V48278MSA
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 06/06/24 19:48 V48278MSA
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 06/06/24 19:48 V48278MSA
<0.180 µg/L 0.180 0.500Trichloroethene 1 06/06/24 19:48 V48278MSA
<0.180 µg/L 0.180 0.500Trichlorofluoromethane 1 06/06/24 19:48 V48278MSA
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 06/06/24 19:48 V48278MSA
<0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 06/06/24 19:48 V48278MSA
<0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 06/06/24 19:48 V48278MSA
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 06/06/24 19:48 V48278MSA
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 06/06/24 19:48 V48278MSA
<0.210 µg/L 0.210 0.500o-Xylene 1 06/06/24 19:48 V48278MSA
<0.420 µg/L 0.420 1.00m,p-Xylene 1 06/06/24 19:48 V48278MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 20 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
24-155-0008
00087
Geological Resources, Inc.
3502 Hayes Road
Eric Eubanks
Monroe
GRI #2451 Received : 06/03/2024
Gate #402
Report Date : 06/07/2024
Sample ID :
Lab No :
Sampled:Trip Blank
94718 Matrix:
6/3/2024 8:35
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V48276 06/06/24 09:00
<0.21 µg/L 0.210 0.500Xylene (Total)1 06/06/24 19:48 V48278
Surrogate: 4-Bromofluorobenzene 95.6 Limits: 70-130%06/06/24 19:481 MSA V48278
Surrogate: Dibromofluoromethane 78.2 Limits: 70-130%06/06/24 19:481 MSA V48278
Surrogate: 1,2-Dichloroethane - d4 75.2 Limits: 70-130%06/06/24 19:481 MSA V48278
Surrogate: Toluene-d8 112 Limits: 70-130%06/06/24 19:481 MSA V48278
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 21 of 29
Quality Control Data
24-155-0008Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V48278QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V48276
Associated Lab Samples: 94715, 94716, 94717, 94718
LRB-V48276 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/06/24 18:0810.01.80<1.80µg/LAcetone
06/06/24 18:080.5000.180<0.180µg/LBenzene
06/06/24 18:080.5000.210<0.210µg/LBromobenzene
06/06/24 18:081.000.420<0.420µg/LBromochloromethane
06/06/24 18:080.5000.160<0.160µg/LBromodichloromethane
06/06/24 18:085.001.50<1.50µg/LBromoform
06/06/24 18:081.000.280<0.280µg/LBromomethane
06/06/24 18:080.5000.180<0.180µg/Ln-Butylbenzene
06/06/24 18:080.5000.200<0.200µg/Lsec-Butyl benzene
06/06/24 18:082.000.920<0.920µg/Ltert-Butyl benzene
06/06/24 18:080.5000.180<0.180µg/LCarbon Tetrachloride
06/06/24 18:080.5000.190<0.190µg/LChlorobenzene
06/06/24 18:080.5000.190<0.190µg/LChlorodibromomethane
06/06/24 18:081.000.430<0.430µg/LChloroethane
06/06/24 18:080.5000.220<0.220µg/LChloroform
06/06/24 18:080.5000.220<0.220µg/LChloromethane
06/06/24 18:080.5000.200<0.200µg/L2-Chlorotoluene
06/06/24 18:080.5000.200<0.200µg/L4-Chlorotoluene
06/06/24 18:080.5000.500<0.500µg/LDi-Isopropyl Ether (DIPE)
06/06/24 18:082.001.10<1.10µg/L1,2-Dibromo-3-Chloropropane
06/06/24 18:080.5000.200<0.200µg/L1,2-Dibromoethane
06/06/24 18:080.5000.230<0.230µg/LDibromomethane
06/06/24 18:080.5000.220<0.220µg/L1,2-Dichlorobenzene
06/06/24 18:080.5000.190<0.190µg/L1,3-Dichlorobenzene
06/06/24 18:080.5000.210<0.210µg/L1,4-Dichlorobenzene
06/06/24 18:085.001.20<1.20µg/LDichlorodifluoromethane
06/06/24 18:080.5000.240<0.240µg/L1,1-Dichloroethane
Page 1 of 6Date:06/07/2024 10:03 PM
Page 22 of 29
Quality Control Data
24-155-0008Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V48278QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V48276
Associated Lab Samples: 94715, 94716, 94717, 94718
LRB-V48276 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/06/24 18:080.5000.150<0.150µg/L1,2-Dichloroethane
06/06/24 18:080.5000.150<0.150µg/L1,1-Dichloroethene
06/06/24 18:080.5000.200<0.200µg/Lcis-1,2-Dichloroethene
06/06/24 18:080.5000.180<0.180µg/Ltrans-1,2-Dichloroethene
06/06/24 18:080.5000.190<0.190µg/L1,2-Dichloropropane
06/06/24 18:080.5000.130<0.130µg/L1,3-Dichloropropane
06/06/24 18:082.000.210<0.210µg/L2,2-Dichloropropane
06/06/24 18:080.5000.200<0.200µg/L1,1-Dichloropropene
06/06/24 18:080.5000.210<0.210µg/Lcis-1,3-Dichloropropene
06/06/24 18:080.5000.150<0.150µg/Ltrans-1,3-Dichloropropene
06/06/24 18:0820042.0<42.0µg/LEthanol
06/06/24 18:080.5000.170<0.170µg/LEthylbenzene
06/06/24 18:083.000.350<0.350µg/LHexachlorobutadiene
06/06/24 18:081.000.380<0.380µg/L2-Hexanone
06/06/24 18:080.5000.180<0.180µg/LIsopropylbenzene
06/06/24 18:080.5000.089<0.089µg/L4-Isopropyl toluene
06/06/24 18:085.000.710<0.710µg/LMethyl Ethyl Ketone (MEK)
06/06/24 18:081.000.140<0.140µg/LMethyl tert-butyl ether (MTBE)
06/06/24 18:081.000.078<0.078µg/L4-Methyl-2-Pentanone
06/06/24 18:082.000.330<0.330µg/LMethylene Chloride
06/06/24 18:081.000.470<0.470µg/LNaphthalene
06/06/24 18:080.5000.190<0.190µg/Ln-Propylbenzene
06/06/24 18:080.5000.220<0.220µg/LStyrene
06/06/24 18:080.5000.160<0.160µg/L1,1,1,2-Tetrachloroethane
06/06/24 18:080.5000.160<0.160µg/L1,1,2,2-Tetrachloroethane
06/06/24 18:080.5000.220<0.220µg/LTetrachloroethene
06/06/24 18:080.5000.220<0.220µg/LToluene
Page 2 of 6Date:06/07/2024 10:03 PM
Page 23 of 29
Quality Control Data
24-155-0008Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V48278QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V48276
Associated Lab Samples: 94715, 94716, 94717, 94718
LRB-V48276 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/06/24 18:080.5000.380<0.380µg/L1,2,3-Trichlorobenzene
06/06/24 18:080.5000.310<0.310µg/L1,2,4-Trichlorobenzene
06/06/24 18:080.5000.160<0.160µg/L1,1,1-Trichloroethane
06/06/24 18:080.5000.096<0.096µg/L1,1,2-Trichloroethane
06/06/24 18:080.5000.180<0.180µg/LTrichloroethene
06/06/24 18:080.5000.180<0.180µg/LTrichlorofluoromethane
06/06/24 18:080.5000.270<0.270µg/L1,2,3-Trichloropropane
06/06/24 18:080.5000.190<0.190µg/L1,2,4-Trimethylbenzene
06/06/24 18:080.5000.180<0.180µg/L1,3,5-Trimethylbenzene
06/06/24 18:085.001.00<1.00µg/LVinyl Acetate
06/06/24 18:080.5000.170<0.170µg/LVinyl Chloride
06/06/24 18:080.5000.210<0.210µg/Lo-Xylene
06/06/24 18:081.000.420<0.420µg/Lm,p-Xylene
06/06/24 18:084-Bromofluorobenzene (S)104 70-130
06/06/24 18:08Dibromofluoromethane (S)93.8 70-130
06/06/24 18:081,2-Dichloroethane - d4 (S)93.4 70-130
06/06/24 18:08Toluene-d8 (S)77.8 70-130
LCS-V48276 LCSD-V48276Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
55.3 13813654.540.0µg/LAcetone 40-160 1.4 20.0
22.9 11510621.220.0µg/LBenzene 70-130 7.7 20.0
20.7 10411122.120.0µg/LBromobenzene 70-130 6.5 20.0
23.2 11610921.720.0µg/LBromochloromethane 70-130 6.6 20.0
26.2 131*10621.120.0µg/LBromodichloromethane 70-130 21.5*20.0
Page 3 of 6* QC Fail Date:06/07/2024 10:03 PM
Page 24 of 29
Quality Control Data
24-155-0008Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V48278QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V48276
LCS-V48276 LCSD-V48276Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
19.4 97.090.018.020.0µg/LBromoform 70-130 7.4 20.0
18.8 94.086.017.220.0µg/LBromomethane 60-140 8.8 20.0
21.4 10799.019.820.0µg/Ln-Butylbenzene 70-130 7.7 20.0
21.2 10694.018.820.0µg/Lsec-Butyl benzene 70-130 12.0 20.0
20.4 10289.517.920.0µg/Ltert-Butyl benzene 70-130 13.0 20.0
22.9 11510120.120.0µg/LCarbon Tetrachloride 70-130 13.0 20.0
20.5 10396.519.320.0µg/LChlorobenzene 70-130 6.0 20.0
21.3 10788.017.620.0µg/LChlorodibromomethane 70-130 19.0 20.0
30.7 154*141*28.220.0µg/LChloroethane 60-140 8.4 20.0
22.1 11110420.720.0µg/LChloroform 70-130 6.5 20.0
23.2 11699.519.920.0µg/LChloromethane 60-140 15.3 20.0
20.6 10397.019.420.0µg/L2-Chlorotoluene 70-130 6.0 20.0
20.8 10410420.720.0µg/L4-Chlorotoluene 70-130 0.4 20.0
23.2 11610821.520.0µg/LDi-Isopropyl Ether (DIPE)70-130 7.6 20.0
21.3 10711823.520.0µg/L1,2-Dibromo-3-Chloropropane 70-130 9.8 20.0
22.9 11510521.020.0µg/L1,2-Dibromoethane 70-130 8.6 20.0
22.1 11110821.520.0µg/LDibromomethane 70-130 2.7 20.0
21.0 10598.019.620.0µg/L1,2-Dichlorobenzene 70-130 6.8 20.0
20.8 10489.517.920.0µg/L1,3-Dichlorobenzene 70-130 14.9 20.0
20.7 10493.518.720.0µg/L1,4-Dichlorobenzene 70-130 10.1 20.0
24.2 12110921.720.0µg/LDichlorodifluoromethane 60-140 10.8 20.0
22.5 11310420.820.0µg/L1,1-Dichloroethane 70-130 7.8 20.0
22.6 11310821.520.0µg/L1,2-Dichloroethane 70-130 4.9 20.0
27.5 138*11923.820.0µg/L1,1-Dichloroethene 70-130 14.4 20.0
22.3 11210520.920.0µg/Lcis-1,2-Dichloroethene 70-130 6.4 20.0
22.4 11210520.920.0µg/Ltrans-1,2-Dichloroethene 70-130 6.9 20.0
Page 4 of 6* QC Fail Date:06/07/2024 10:03 PM
Page 25 of 29
Quality Control Data
24-155-0008Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V48278QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V48276
LCS-V48276 LCSD-V48276Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
25.4 12711022.020.0µg/L1,2-Dichloropropane 70-130 14.3 20.0
24.6 12391.518.320.0µg/L1,3-Dichloropropane 70-130 29.3*20.0
24.0 12011021.920.0µg/L2,2-Dichloropropane 70-130 9.1 20.0
23.3 11710721.320.0µg/L1,1-Dichloropropene 70-130 8.9 20.0
27.6 138*10821.520.0µg/Lcis-1,3-Dichloropropene 70-130 24.8*20.0
23.4 11711122.220.0µg/Ltrans-1,3-Dichloropropene 70-130 5.2 20.0
706 141*134669500µg/LEthanol 60-140 5.3 20.0
20.9 10597.019.420.0µg/LEthylbenzene 70-130 7.4 20.0
20.3 10296.519.320.0µg/LHexachlorobutadiene 70-130 5.0 20.0
29.4 147*12424.720.0µg/L2-Hexanone 60-140 17.3 20.0
21.3 10711422.820.0µg/LIsopropylbenzene 70-130 6.8 20.0
21.1 10692.018.420.0µg/L4-Isopropyl toluene 70-130 13.6 20.0
26.8 13413326.620.0µg/LMethyl Ethyl Ketone (MEK)60-140 0.7 20.0
21.7 10910621.220.0µg/LMethyl tert-butyl ether (MTBE)70-130 2.3 20.0
26.0 13012124.220.0µg/L4-Methyl-2-Pentanone 60-140 7.1 20.0
23.4 11711122.220.0µg/LMethylene Chloride 70-130 5.2 20.0
20.0 10011122.120.0µg/LNaphthalene 70-130 9.9 20.0
21.1 10610420.820.0µg/Ln-Propylbenzene 70-130 1.4 20.0
22.6 11397.519.520.0µg/LStyrene 70-130 14.7 20.0
20.4 10295.519.120.0µg/L1,1,1,2-Tetrachloroethane 70-130 6.5 20.0
20.9 10510821.520.0µg/L1,1,2,2-Tetrachloroethane 70-130 2.8 20.0
20.4 10288.017.620.0µg/LTetrachloroethene 70-130 14.7 20.0
26.5 133*10721.420.0µg/LToluene 70-130 21.2*20.0
20.7 10411723.420.0µg/L1,2,3-Trichlorobenzene 70-130 12.2 20.0
20.6 10311122.220.0µg/L1,2,4-Trichlorobenzene 70-130 7.4 20.0
22.7 11410320.520.0µg/L1,1,1-Trichloroethane 70-130 10.1 20.0
Page 5 of 6* QC Fail Date:06/07/2024 10:03 PM
Page 26 of 29
Quality Control Data
24-155-0008Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V48278QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V48276
LCS-V48276 LCSD-V48276Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
25.1 12610821.520.0µg/L1,1,2-Trichloroethane 70-130 15.4 20.0
22.7 11410621.220.0µg/LTrichloroethene 70-130 6.8 20.0
24.4 12210821.620.0µg/LTrichlorofluoromethane 60-140 12.1 20.0
20.1 10197.019.420.0µg/L1,2,3-Trichloropropane 70-130 3.5 20.0
20.4 10291.018.220.0µg/L1,2,4-Trimethylbenzene 70-130 11.3 20.0
20.8 10496.519.320.0µg/L1,3,5-Trimethylbenzene 70-130 7.4 20.0
24.3 12211322.520.0µg/LVinyl Acetate 60-140 7.6 20.0
23.8 11910621.220.0µg/LVinyl Chloride 60-140 11.5 20.0
22.7 11410220.420.0µg/Lo-Xylene 70-130 10.6 20.0
44.8 11210542.040.0µg/Lm,p-Xylene 70-130 6.4 20.0
97.21194-Bromofluorobenzene (S)70-130
94.695.0Dibromofluoromethane (S)70-130
99.01011,2-Dichloroethane - d4 (S)70-130
11184.2Toluene-d8 (S)70-130
Page 6 of 6Date:06/07/2024 10:03 PM
Page 27 of 29
Fed Ex
UPS
US Postal
Client
Lab
Courier
Other :
Shipment Receipt Form
Customer Number:
Customer Name:
Report Number:24-155-0008
Geological Resources, Inc.
00087
Shipping Method
Shipping container/cooler uncompromised?
Thermometer ID:IRT15 2.9C
Chain of Custody (COC) present?Yes No
Yes No Not Present
Yes No Not Present
Yes No
COC agrees with sample label(s)? Yes No
COC properly completed
Samples in proper containers?
Sample containers intact?
Sufficient sample volume for indicated test(s)?
All samples received within holding time?
Cooler temperature in compliance?
Yes No
Yes No
Yes No
Yes No
Yes No Not Present
Yes NoCooler/Samples arrived at the laboratory on ice.
Samples were considered acceptable as cooling
process had begun.
Yes No
Yes No N/A
Yes No N/A
Yes No N/ASoil VOA method 5035 – compliance criteria met
Water - Sample containers properly preserved
Water - VOA vials free of headspace Yes No N/A
Trip Blanks received with VOAs
Low concentration EnCore samplers (48 hr)
High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d)
High concentration container (48 hr)
Custody seals intact on shipping container/cooler?
Custody seals intact on sample bottles?
Number of coolers/boxes received
Yes No
1
Signature:Angelo Norvell Date & Time:06/03/2024 13:08:48
Special precautions or instructions included?
Comments:
Page 28 of 29
Pa
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e

2
9

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2
9

APPENDIX B
Review of Historical Analytical Data

3502 Hayes Road • Monroe, North Carolina 28110
113 West Firetower Road, Suite G • Winterville, North Carolina 28590
Phone [phone] • [phone] • Fax [phone]
Engineering Certification: C-2727 • Geology Certification: C-127
June 15, 2023

Mr. Brad Newton
North Carolina Department of
Environmental Quality
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville, NC 28115

Re: Chlorinated Solvent Source
Former Gate #402
2520 Bessemer City Road
Bessemer City, North Carolina
Gaston County
Incident #18748
GRI Project #2451

Dear Mr. Newton,

Geological Resources, Inc. (GRI) has recently reviewed the historical analytical data associated with
water supply well sampling activities historically conducted in the area of the site. Three water supply
wells (WSW-4, WSW-9 and WSW-10) have been sampled quarterly since 2010.

With the exception of a low concentration of benzene that was reported in WSW-4 in July 2019, no
petroleum contaminants that exceed the 2L have been reported in any of the water supply wells
sampled since prior to 2017. Since 2017 the primary contaminant compounds that exceeded 2L
included 1, 2-dichloroethane and tetrachloroethylene (PCE), both of which are chlorinated solvents used
in industrial processes and are not generally associated with a petroleum release. Those compounds
were reported at levels that exceeded the 2L in water supply wells WSW-4 and or WSW-10 from 2018
through early 2021. Since early 2021, only samples collected from WSW-10 have reported PCE
concentrations that exceeded the 2L standard. Based on the last Health Risk Evaluation Report dated
May 3, 2019 from the NCDEQ State Toxicologist, there were no restrictions recommended for the use of
water from WSW-10.

The former Bessemer City Road PCE site (NONCD0001344) was previously located approximately 100
feet to the south and across Bessemer City Road from the Former Gate 402 facility. In reviewing the
historical data, GRI suspects that that site is the source of the chlorinated solvent contaminants that
have been reported in the ground water in the area of the former Gate 402 site. Attached is a copy of
the EPA’s chemical analysis of PCE including the uses of PCE and more specifically, indicating that PCE is
not used in petroleum products.

Former Gate 402
Chlorinated Solvent Source
Page 2 of 4

3502 Hayes Road • Monroe, North Carolina 28110
Phone [phone] • [phone] • Fax [phone]

Based on the presence of the former Bessemer City Road PCE Site, located between the Gate #420 site
and water supply well WSW-10, and the fact that PCE is not a petroleum constituent, it is assumed that
the PCE contamination in WSW-10 can be attributed to the former Bessemer City Road PCE site. Area
maps and a copy of the last Health Risk Evaluation have been attached for your reference.

Please contact me at 704-845-4010 or [e-mail] with any questions or
comments.

Sincerely,

Scott Ball
Project Manager
BrookRidge Dr
Parker
Ln
Gelsinger
Ave
Barkers
Ridge
Dr
MAIN
MAIN
Berkley
Forest
Cir
Mall
Ridge
Dr
Gelsinger Ave
OatesRd
Old
Barn
Ln
Fraley
Rd
275
274
OatesRd
FraleyRd
LabonDr 275
WhiteJenkinsRd
IsleyDr
275
274
MAIN
Fairview Rd
MAIN
IsleyDr
Reichel
Dr
IndustrialPike
MAIN
NC DWM Site Locator Tool
NCDOT GIS Unit, Esri Community Maps Contributors,
County of Gaston, State of North Carolina DOT, ©
OpenStreetMap, Microsoft, Esri, HERE, Garmin,
SafeGraph, GeoTechnologies, Inc, METI/NASA, USGS,
Hazardous Waste Sites
Brownfields Program Sites
Inactive Hazardous Sites
UST Incidents
High Risk
Low Risk
Non-UST Incidents
Unknown Risk
UST Active Facilities
Land Use Restriction and/or Notices
Notice and Restriction
County Boundary
5/5/2023, 9:30:21 AM
0 0.09 0.180.04 mi
0 0.1 0.20.05 km
1:4,514
NC Division of Waste ManagementEsri Community Maps Contributors, County of Gaston, State of North Carolina DOT, © OpenStreetMap, Microsoft, Esri, HERE, Garmin, SafeGraph, GeoTechnologies, Inc, METI/NASA, USGS, EPA, NPS, US Census Bureau, USDA | Copyright:© 2013 National Geographic Society, i-cubed | NCDOT GIS Unit | This
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Tetrachloroethylene (Perchloroethylene)
127-18-4
Hazard Summary
Tetrachloroethylene is widely used for dry-cleaning fabrics and metal degreasing operations. Effects resulting from
acute (short term) high-level inhalation exposure of humans to tetrachloroethylene include irritation of the upper
respiratory tract and eyes, kidney dysfunction, and neurological effects such as reversible mood and behavioral
changes, impairment of coordination, dizziness, headache, sleepiness, and unconsciousness.  The primary effects
from chronic (long term) inhalation exposure are neurological, including impaired cognitive and motor
neurobehavioral performance.  Tetrachloroethylene exposure may also cause adverse effects in the kidney, liver,
immune system and hematologic system, and on development and reproduction. Studies of people exposed in the
workplace have found associations with several types of cancer including bladder cancer, non-Hodgkin lymphoma,
multiple myeloma.  EPA has classified tetrachloroethylene as likely to be carcinogenic to humans.
Please Note: The main sources of information for this fact sheet are EPA's Integrated Risk Information System
(IRIS) (2), which contains information on inhalation chronic toxicity and the RfC, oral chronic toxicity and the RfD,
and the carcinogenic effects of tetrachloroethylene; and the Agency for Toxic Substances and Disease Registry's
(ATSDR's)Toxicological Profile for Tetrachloroethylene. (1)
Uses
Tetrachloroethylene is used for dry cleaning and textile processing, as a chemical intermediate, and for
vapor degreasing in metal-cleaning operations. (1)
Sources and Potential Exposure
Over the past few decades, concentrations of tetrachloroethylene detected in ambient air have declined
with reductions in the use of tetrachloroethylene. (2)
Tetrachloroethylene has also been detected in drinking water supplies from contaminated groundwater
sources. (2)
Occupational exposure to tetrachloroethylene primarily occurs in industries using the chemical (e.g., many
dry cleaning facilities) and at industries manufacturing the chemical. New dry cleaning technologies and
practices introduced over the past couple of decades result in substantially reduced occupational exposure
(1, 2)
Assessing Personal Exposure
Tetrachloroethylene can be measured in the breath, and breakdown products of tetrachloroethylene can be
measured in the blood and urine. (1)
Health Hazard Information
Acute Effects:
Effects resulting from acute, inhalation exposure of humans to tetrachloroethylene vapors include irritation
of the upper respiratory tract and eyes, kidney dysfunction, and at lower concentrations, neurological
effects, such as reversible mood and behavioral changes, impairment of coordination, dizziness, headache,
sleepiness, and unconciousness. (1, 2)
Animal studies have reported effects on the liver, kidney, and central nervous system (CNS) from acute
inhalation exposure to high levels of tetrachloroethylene. (1, 2)
Acute animal tests in mice have shown tetrachloroethylene to have low toxicity from inhalation and oral
exposure. (1)
Chronic Effects  (Noncancer):
The major effects from chronic inhalation exposure to tetrachloroethylene in humans are neurological
effects, including sensory symptoms such as headaches, impairments in cognititve and motor
neurobehavioral functioning and color vision decrements.  Other effects noted in humans, generally at
higher exposures, include liver damage,  kidney effects, immune and hematologic effects, and on
development and reproduction. (1, 2)
Animal studies have reported effects on the liver, kidney, and CNS from chronic inhalation exposure to
tetrachloroethylene. (1, 2)
EPA has calculated a  Reference Concentration (RfC) of 0.04 milligrams per cubic meter (0.04 mg/m3)
based on neurotoxicity in occupationally-exposed adults. The RfC is an estimate (with uncertainty spanning
perhaps an order of magnitude) of a continuous inhalation to the human population (including sensitive
subgroups) that is likely to be without appreciable risk of deleterious noncancer effects during a lifetime.  It
is not an estimator of risk but rather a reference point to gauge the potential for effects.  At exposures
increasingly greater than the RfC, the potential for adverse health effects increases.  Lifetime exposure
above the RfC does not imply that an adverse effect would necessarily occur. (2)
The Reference Dose (RfD) for tetrachloroethylene is 0.006 milligrams per kilogram body weight per day
(mg/kg/d) based on neurotoxicity in occupationally-exposed adults. The RfD is an estimate (with
uncertainty spanning perhaps an order of magnitude) of a daily oral exposure to the human population
(including sensitive subgroups) that is likely to be without appreciable risk of deleterious noncancer effects
during a lifetime. It is not a direct estimator of risk, but rather a reference point to gauge the potential for
effects. At exposures increasingly greater than the RfD, the potential for adverse health effects increases.
Lifetime exposure above the RfD does not imply that an adverse health effect would necessarily occur. (2)
EPA has medium confidence in both the RfC and RfD values overall.  Although EPA’s confidence in the
evidence of neurotoxicological hazard is high, EPA has medium rather than high confidence in the study
estimates they were based on because they were derived from a LOAEL rather than a NOAEL and data were
insufficient for dose-response modeling; additionally, the studies focus on occupational subjects and lack
data to characterize potential susceptibility and variability across humans.  EPA has medium confidence in
the database due to limitations in both the available human and animal database (4)
Reproductive/Developmental Effects:
Some adverse reproductive effects, such as menstrual disorders, altered sperm structure, and reduced
fertility, have been reported in studies of workers occupationally exposed to tetrachloroethylene.  However,
the evidence is inconclusive. (2)
Some studies of residents exposed to drinking water contaminated with tetrachloroethylene and other
solvents during pregnancy suggest an association of tetrachloroethylene exposure with birth defects,
however firm conclusions cannot be drawn due to several limitations of these studies. (2)
Increased fetal resorptions and effects to the fetus have been reported in animals exposed to high levels of
tetrachloroethylene by inhalation. (2)
Cancer Risk:
Studies of dry cleaning workers exposed to tetrachloroethylene have shown associations between exposure
to tetrachloroethylene and several types of cancer, specifically bladder cancer, non-Hodgkin lymphoma and
multiple myeloma. There is also limited evidence suggestive of associations with esophageal, kidney,
cervical and breast cancer. (2)
Animal studies have reported an increased incidence of liver tumors in mice, from inhalation and gavage
(experimentally placing the chemical in the stomach) exposure, and kidney and mononuclear cell leukemias
in rats, via inhalation exposure. (1,2)
EPA has classified tetrachloroethylene as likely to be carcinogenic to humans by all routes of exposure
based on suggestive evidence in epidemiological studies and conclusive  evidence in rats (mononuclear cell
leukemia) and mice (increased incidence of liver tumors). The International Agency for Research on Cancer
(IARC) has classified tetrachloroethylene as probably carcinogenic to humans (Group 2A).
EPA uses mathematical models, based on animal or human studies, to estimate the probability of a person
developing cancer from breathing air containing a specified concentration of a chemical.  EPA calculated an
inhalation unit risk estimate of 2.6 × 10-7 (µg/m3)-1.  EPA estimates that, if an individual were to
continuously breathe air containing tetrachloroethylene at an average of 4 ug/m3 (4 x 10-3 mg/m3) over
his or her entire lifetime, that person would theoretically have no more than a one-in-a-million increased
chance of developing cancer as a direct result of breathing air containing this chemical. Similarly, EPA
estimates that continuously breathing air containing 40 µg/m3 (4 x 10-2 mg/m3) would result in not
greater than a one-in-a-hundred thousand increased chance of developing cancer, and air containing 400
µg/m3 (4 x 10-1 mg/m3) would result in not greater than a one-in-ten thousand increased chance of
developing cancer. For a detailed discussion of confidence in the potency estimates, please see IRIS.
EPA calculated an oral cancer slope factor of 0.0021 (mg/kg/d)-1 based on extrapolation from inhalation
dose-response data. (2)
Physical Properties
Tetrachloroethylene is a nonflammable colorless liquid with a sharp sweet odor; the odor threshold is 1
ppm. (1)
The chemical formula for tetrachloroethylene is C2Cl4, and the molecular weight is 165.83 g/mol. (1)
The vapor pressure for tetrachloroethylene is 18.47 mm Hg at 25 °C, and it has a log octanol/water
partition coefficient (log Kow) of 3.40. (1)
Conversion Factors: 
To convert concentrations in air (at 25 °C) from ppm to mg/m3: mg/m3 = (ppm) × (molecular weight of the
compound)/(24.45). For tetrachloroethylene: 1 ppm = 6.78 mg/m3. To convert concentrations in air from µg/m3 to
mg/m3: mg/m3 = (µg/m3) × (1 mg/1,000 µg).
Health Data from Inhalation Exposure
AIHA ERPG - American Industrial Hygiene Association's emergency response planning guidelines.  ERPG 1 is the
maximum airborne concentration below which it is believed nearly all individuals could be exposed up to one hour
without experiencing other than mild transient adverse health effects or perceiving a clearly defined objectionable
odor; ERPG 2 is the maximum airborne concentration below which it is believed nearly all individuals could be
exposed up to one hour without experiencing or developing irreversible or other serious health effects that could
impair their abilities to take protective action. 
ACGIH TLV - American Conference of Governmental and Industrial Hygienists' threshold limit value expressed as a
time-weighted average; the concentration of a substance to which most workers can be exposed without adverse
effects. 
LC50 (Lethal Concentration50) - A calculated concentration of a chemical in air to which exposure for a specific
length of time is expected to cause death in 50% of a defined experimental animal population. 
LOAEL - Lowest-observed-adverse-effect level. 
NIOSH IDLH - National Institute of Occupational Safety and Health's immediately dangerous to life or health
concentration; NIOSH recommended exposure limit to ensure that a worker can escape from an exposure condition
that is likely to cause death or immediate or delayed permanent adverse health effects or prevent escape from the
environment. 
ACGIH STEL - American Conference of Governmental and Industrial Hygienists' recommended short-term exposure
limit; a 15-minute TWA exposure which should not be exceeded at any time during a workday. 
OSHA PEL - Occupational Safety and Health Administration’s permissible exposure limit expressed as a time-
weighted average; the concentration of a substance to which most workers can be exposed without adverse effect
averaged over a normal 8-h workday or a 40-h workweek.
The health and regulatory values cited in this factsheet were obtained in 2012. a Health numbers are toxicological numbers from human studies, animal testing or risk assessment values
developed by EPA.b Regulatory numbers are values that have been incorporated in Government regulations, while advisory numbers
are nonregulatory values provided by the Government or other groups as advice.  OSHA numbers are regulatory,
whereas NIOSH, ACGIH, and AIHA numbers are advisory. c The LOAELs for neurological effects are from the two principal studies on which the RfC is based.
Summary created in April 1992, updated January 2000
References
1. Agency for Toxic Substances and Disease Registry (ATSDR). Toxicological Profile for Tetrachloroethylene
(Update). U.S. Public Health Service, U.S. Department of Health and Human Services, Atlanta, GA. 1997.
2. U.S. Environmental Protection Agency. Integrated Risk Information System (IRIS) on Tetrachloroethylene.
National Center for Environmental Assessment, Office of Research and Development, Washington, DC.
2012. 
3. National Institute for Occupational Safety and Health (NIOSH). Control of Exposure to Perchloroethylene in
Commercial Drycleaning. Publication Number 97-154. 1997. 
4. American Conference of Governmental and Industrial Hygienists (ACGIH). 2009 Guide to Occupational
Exposure Values. ACGIH, Cincinnati, OH.  2009.
5. National Institute for Occupational Safety and Health (NIOSH).  Pocket Guide to Chemical Hazards.  U.S.
Department of Health and Human Services, Public Health Service, Centers for Disease Control and
Prevention.  Cincinnati, OH.  2007.
6. American Industrial Hygiene Association (AIHA).  The AIHA 2011 Emergency Response Planning Guidelines
and Workplace Environmental Exposure Level Guides Handbook. 2011.