MO-5392_18748_G_WSW_20230419_PAYNEHREREQ

April 19, 2023
MEMORANDUM
TO: David Lilley, Environmental Toxicologist, Division of Waste Management, 1646 Mail Service Center, Raleigh, NC 27699-1646 (FAX [phone]) FROM: Brad Newton, Mooresville Regional Office, UST Section SUBJECT: Request for Health Risk Evaluation of Water Supply Tracking ID: Incident Number: 18748 Enclosed please find the analytical results for a water sample collected on April 3, 2023, from the Payne water supply well, identified as WSW 9, located at 523 Oates Road, Gastonia, Gaston County. Please
perform a health risk evaluation and send the evaluation with your recommendation and a copy of this memo to me. I will then forward the health risk evaluation and recommendation to any well users.
If you have questions or need additional information, please contact me at the address or telephone number below. Thank you for your assistance.
Attachment(s): Payne Sample Analytical Results
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-094-0017
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI #2451 Received : 04/04/2023
Gate #402
Report Date : 04/17/2023
Sample ID :
Lab No :
Sampled:WSW-9
92903 Matrix:
4/3/2023 12:15
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31967 04/12/23 09:00
<1.80 µg/L 1.80 10.0Acetone 1 04/12/23 17:01 V31976MSA
<0.180 µg/L 0.180 0.500Benzene 1 04/12/23 17:01 V31976MSA
<0.210 µg/L 0.210 0.500Bromobenzene 1 04/12/23 17:01 V31976MSA
<0.420 µg/L 0.420 1.00Bromochloromethane 1 04/12/23 17:01 V31976MSA
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 04/12/23 17:01 V31976MSA
<1.50 µg/L 1.50 5.00Bromoform 1 04/12/23 17:01 V31976MSA
<0.280 µg/L 0.280 1.00Bromomethane 1 04/12/23 17:01 V31976MSA
<0.180 µg/L 0.180 0.500n-Butylbenzene 1 04/12/23 17:01 V31976MSA
<0.200 µg/L 0.200 0.500sec-Butyl benzene 1 04/12/23 17:01 V31976MSA
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 04/12/23 17:01 V31976MSA
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 04/12/23 17:01 V31976MSA
<0.190 µg/L 0.190 0.500Chlorobenzene 1 04/12/23 17:01 V31976MSA
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 04/12/23 17:01 V31976MSA
<0.430 µg/L 0.430 1.00Chloroethane 1 04/12/23 17:01 V31976MSA
0.388 J µg/L 0.220 0.500Chloroform 1 04/12/23 17:01 V31976MSA
<0.220 µg/L 0.220 0.500Chloromethane 1 04/12/23 17:01 V31976MSA
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 04/12/23 17:01 V31976MSA
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 04/12/23 17:01 V31976MSA
<0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 04/12/23 17:01 V31976MSA
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 04/12/23 17:01 V31976MSA
<0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 04/12/23 17:01 V31976MSA
<0.230 µg/L 0.230 0.500Dibromomethane 1 04/12/23 17:01 V31976MSA
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 04/12/23 17:01 V31976MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 9 of 34
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-094-0017
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI #2451 Received : 04/04/2023
Gate #402
Report Date : 04/17/2023
Sample ID :
Lab No :
Sampled:WSW-9
92903 Matrix:
4/3/2023 12:15
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31967 04/12/23 09:00
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 04/12/23 17:01 V31976MSA
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 04/12/23 17:01 V31976MSA
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 04/12/23 17:01 V31976MSA
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 04/12/23 17:01 V31976MSA
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 04/12/23 17:01 V31976MSA
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 04/12/23 17:01 V31976MSA
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 04/12/23 17:01 V31976MSA
<0.180 µg/L 0.180 0.500trans-1,2-Dichloroethene 1 04/12/23 17:01 V31976MSA
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 04/12/23 17:01 V31976MSA
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 04/12/23 17:01 V31976MSA
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 04/12/23 17:01 V31976MSA
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 04/12/23 17:01 V31976MSA
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 04/12/23 17:01 V31976MSA
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 04/12/23 17:01 V31976MSA
<42.0 µg/L 42.0 200Ethanol 1 04/12/23 17:01 V31976MSA
<0.170 µg/L 0.170 0.500Ethylbenzene 1 04/12/23 17:01 V31976MSA
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 04/12/23 17:01 V31976MSA
<0.380 µg/L 0.380 1.002-Hexanone 1 04/12/23 17:01 V31976MSA
<0.180 µg/L 0.180 0.500Isopropylbenzene 1 04/12/23 17:01 V31976MSA
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 04/12/23 17:01 V31976MSA
<0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 04/12/23 17:01 V31976MSA
<0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 04/12/23 17:01 V31976MSA
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 04/12/23 17:01 V31976MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 10 of 34
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-094-0017
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI #2451 Received : 04/04/2023
Gate #402
Report Date : 04/17/2023
Sample ID :
Lab No :
Sampled:WSW-9
92903 Matrix:
4/3/2023 12:15
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31967 04/12/23 09:00
<0.330 µg/L 0.330 2.00Methylene Chloride 1 04/12/23 17:01 V31976MSA
<0.470 µg/L 0.470 1.00Naphthalene 1 04/12/23 17:01 V31976MSA
<0.190 µg/L 0.190 0.500n-Propylbenzene 1 04/12/23 17:01 V31976MSA
<0.220 µg/L 0.220 0.500Styrene 1 04/12/23 17:01 V31976MSA
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 04/12/23 17:01 V31976MSA
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 04/12/23 17:01 V31976MSA
0.540 µg/L 0.220 0.500Tetrachloroethene 1 04/12/23 17:01 V31976MSA
<0.220 µg/L 0.220 0.500Toluene 1 04/12/23 17:01 V31976MSA
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 04/12/23 17:01 V31976MSA
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 04/12/23 17:01 V31976MSA
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 04/12/23 17:01 V31976MSA
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 04/12/23 17:01 V31976MSA
<0.180 µg/L 0.180 0.500Trichloroethene 1 04/12/23 17:01 V31976MSA
<0.180 µg/L 0.180 0.500Trichlorofluoromethane 1 04/12/23 17:01 V31976MSA
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 04/12/23 17:01 V31976MSA
<0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 04/12/23 17:01 V31976MSA
<0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 04/12/23 17:01 V31976MSA
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 04/12/23 17:01 V31976MSA
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 04/12/23 17:01 V31976MSA
<0.210 µg/L 0.210 0.500o-Xylene 1 04/12/23 17:01 V31976MSA
<0.420 µg/L 0.420 1.00m,p-Xylene 1 04/12/23 17:01 V31976MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 11 of 34
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-094-0017
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI #2451 Received : 04/04/2023
Gate #402
Report Date : 04/17/2023
Sample ID :
Lab No :
Sampled:WSW-9
92903 Matrix:
4/3/2023 12:15
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31967 04/12/23 09:00
<0.21 µg/L 0.210 0.500Xylene (Total)1 04/12/23 17:01 V31976
Surrogate: 4-Bromofluorobenzene 99.6 Limits: 70-130%04/12/23 17:011 MSA V31976
Surrogate: Dibromofluoromethane 97.4 Limits: 70-130%04/12/23 17:011 MSA V31976
Surrogate: 1,2-Dichloroethane - d4 99.4 Limits: 70-130%04/12/23 17:011 MSA V31976
Surrogate: Toluene-d8 102 Limits: 70-130%04/12/23 17:011 MSA V31976
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 12 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31976QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31967
Associated Lab Samples: 92902, 92903, 92904
LRB-V31967 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
04/12/23 15:2310.01.80<1.80µg/LAcetone
04/12/23 15:230.5000.180<0.180µg/LBenzene
04/12/23 15:230.5000.210<0.210µg/LBromobenzene
04/12/23 15:231.000.420<0.420µg/LBromochloromethane
04/12/23 15:230.5000.160<0.160µg/LBromodichloromethane
04/12/23 15:235.001.50<1.50µg/LBromoform
04/12/23 15:231.000.280<0.280µg/LBromomethane
04/12/23 15:230.5000.180<0.180µg/Ln-Butylbenzene
04/12/23 15:230.5000.200<0.200µg/Lsec-Butyl benzene
04/12/23 15:232.000.920<0.920µg/Ltert-Butyl benzene
04/12/23 15:230.5000.180<0.180µg/LCarbon Tetrachloride
04/12/23 15:230.5000.190<0.190µg/LChlorobenzene
04/12/23 15:230.5000.190<0.190µg/LChlorodibromomethane
04/12/23 15:231.000.430<0.430µg/LChloroethane
04/12/23 15:230.5000.220<0.220µg/LChloroform
04/12/23 15:230.5000.220<0.220µg/LChloromethane
04/12/23 15:230.5000.200<0.200µg/L2-Chlorotoluene
04/12/23 15:230.5000.200<0.200µg/L4-Chlorotoluene
04/12/23 15:230.5000.500<0.500µg/LDi-Isopropyl Ether (DIPE)
04/12/23 15:232.001.10<1.10µg/L1,2-Dibromo-3-Chloropropane
04/12/23 15:230.5000.200<0.200µg/L1,2-Dibromoethane
04/12/23 15:230.5000.230<0.230µg/LDibromomethane
04/12/23 15:230.5000.220<0.220µg/L1,2-Dichlorobenzene
04/12/23 15:230.5000.190<0.190µg/L1,3-Dichlorobenzene
04/12/23 15:230.5000.210<0.210µg/L1,4-Dichlorobenzene
04/12/23 15:235.001.20<1.20µg/LDichlorodifluoromethane
04/12/23 15:230.5000.240<0.240µg/L1,1-Dichloroethane
Page 1 of 12Date:04/17/2023 06:01 PM
Page 21 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31976QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31967
Associated Lab Samples: 92902, 92903, 92904
LRB-V31967 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
04/12/23 15:230.5000.150<0.150µg/L1,2-Dichloroethane
04/12/23 15:230.5000.150<0.150µg/L1,1-Dichloroethene
04/12/23 15:230.5000.200<0.200µg/Lcis-1,2-Dichloroethene
04/12/23 15:230.5000.180<0.180µg/Ltrans-1,2-Dichloroethene
04/12/23 15:230.5000.190<0.190µg/L1,2-Dichloropropane
04/12/23 15:230.5000.130<0.130µg/L1,3-Dichloropropane
04/12/23 15:232.000.210<0.210µg/L2,2-Dichloropropane
04/12/23 15:230.5000.200<0.200µg/L1,1-Dichloropropene
04/12/23 15:230.5000.210<0.210µg/Lcis-1,3-Dichloropropene
04/12/23 15:230.5000.150<0.150µg/Ltrans-1,3-Dichloropropene
04/12/23 15:2320042.0<42.0µg/LEthanol
04/12/23 15:230.5000.170<0.170µg/LEthylbenzene
04/12/23 15:233.000.350<0.350µg/LHexachlorobutadiene
04/12/23 15:231.000.380<0.380µg/L2-Hexanone
04/12/23 15:230.5000.180<0.180µg/LIsopropylbenzene
04/12/23 15:230.5000.089<0.089µg/L4-Isopropyl toluene
04/12/23 15:235.000.710<0.710µg/LMethyl Ethyl Ketone (MEK)
04/12/23 15:231.000.140<0.140µg/LMethyl tert-butyl ether (MTBE)
04/12/23 15:231.000.078<0.078µg/L4-Methyl-2-Pentanone
04/12/23 15:232.000.330<0.330µg/LMethylene Chloride
04/12/23 15:231.000.470<0.470µg/LNaphthalene
04/12/23 15:230.5000.190<0.190µg/Ln-Propylbenzene
04/12/23 15:230.5000.220<0.220µg/LStyrene
04/12/23 15:230.5000.160<0.160µg/L1,1,1,2-Tetrachloroethane
04/12/23 15:230.5000.160<0.160µg/L1,1,2,2-Tetrachloroethane
04/12/23 15:230.5000.220<0.220µg/LTetrachloroethene
04/12/23 15:230.5000.220<0.220µg/LToluene
Page 2 of 12Date:04/17/2023 06:01 PM
Page 22 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31976QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31967
Associated Lab Samples: 92902, 92903, 92904
LRB-V31967 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
04/12/23 15:230.5000.380<0.380µg/L1,2,3-Trichlorobenzene
04/12/23 15:230.5000.310<0.310µg/L1,2,4-Trichlorobenzene
04/12/23 15:230.5000.160<0.160µg/L1,1,1-Trichloroethane
04/12/23 15:230.5000.096<0.096µg/L1,1,2-Trichloroethane
04/12/23 15:230.5000.180<0.180µg/LTrichloroethene
04/12/23 15:230.5000.180<0.180µg/LTrichlorofluoromethane
04/12/23 15:230.5000.270<0.270µg/L1,2,3-Trichloropropane
04/12/23 15:230.5000.190<0.190µg/L1,2,4-Trimethylbenzene
04/12/23 15:230.5000.180<0.180µg/L1,3,5-Trimethylbenzene
04/12/23 15:235.001.00<1.00µg/LVinyl Acetate
04/12/23 15:230.5000.170<0.170µg/LVinyl Chloride
04/12/23 15:230.5000.210<0.210µg/Lo-Xylene
04/12/23 15:231.000.420<0.420µg/Lm,p-Xylene
04/12/23 15:234-Bromofluorobenzene (S)104 70-130
04/12/23 15:23Dibromofluoromethane (S)98.0 70-130
04/12/23 15:231,2-Dichloroethane - d4 (S)99.2 70-130
04/12/23 15:23Toluene-d8 (S)101 70-130
LCS-V31967 LCSD-V31967Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
29.2 73.074.029.640.0µg/LAcetone 40-160 1.3 20.0
20.8 10410120.220.0µg/LBenzene 70-130 2.9 20.0
20.3 10210020.020.0µg/LBromobenzene 70-130 1.4 20.0
20.1 10197.019.420.0µg/LBromochloromethane 70-130 3.5 20.0
20.0 10010120.120.0µg/LBromodichloromethane 70-130 0.4 20.0
Page 3 of 12Date:04/17/2023 06:01 PM
Page 23 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31976QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31967
LCS-V31967 LCSD-V31967Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
19.4 97.091.018.220.0µg/LBromoform 70-130 6.3 20.0
21.1 10692.518.520.0µg/LBromomethane 60-140 13.1 20.0
20.6 10399.019.820.0µg/Ln-Butylbenzene 70-130 3.9 20.0
19.8 99.096.019.220.0µg/Lsec-Butyl benzene 70-130 3.0 20.0
19.5 97.595.519.120.0µg/Ltert-Butyl benzene 70-130 2.0 20.0
20.1 10194.518.920.0µg/LCarbon Tetrachloride 70-130 6.1 20.0
19.7 98.596.019.220.0µg/LChlorobenzene 70-130 2.5 20.0
20.2 10110320.520.0µg/LChlorodibromomethane 70-130 1.4 20.0
20.5 10392.018.420.0µg/LChloroethane 60-140 10.7 20.0
20.3 10299.519.920.0µg/LChloroform 70-130 1.9 20.0
21.3 10795.519.120.0µg/LChloromethane 60-140 10.8 20.0
19.7 98.597.019.420.0µg/L2-Chlorotoluene 70-130 1.5 20.0
19.7 98.598.519.720.0µg/L4-Chlorotoluene 70-130 0.0 20.0
22.1 11110521.020.0µg/LDi-Isopropyl Ether (DIPE)70-130 5.1 20.0
21.1 10610621.220.0µg/L1,2-Dibromo-3-Chloropropane 70-130 0.4 20.0
20.1 10110320.520.0µg/L1,2-Dibromoethane 70-130 1.9 20.0
20.5 10310220.320.0µg/LDibromomethane 70-130 0.9 20.0
19.7 98.510020.020.0µg/L1,2-Dichlorobenzene 70-130 1.5 20.0
20.0 10097.519.520.0µg/L1,3-Dichlorobenzene 70-130 2.5 20.0
19.3 96.596.519.320.0µg/L1,4-Dichlorobenzene 70-130 0.0 20.0
19.4 97.087.517.520.0µg/LDichlorodifluoromethane 60-140 10.2 20.0
21.1 10699.519.920.0µg/L1,1-Dichloroethane 70-130 5.8 20.0
20.1 10197.019.420.0µg/L1,2-Dichloroethane 70-130 3.5 20.0
21.1 10697.019.420.0µg/L1,1-Dichloroethene 70-130 8.3 20.0
20.7 10499.519.920.0µg/Lcis-1,2-Dichloroethene 70-130 3.9 20.0
20.9 10510020.020.0µg/Ltrans-1,2-Dichloroethene 70-130 4.4 20.0
Page 4 of 12Date:04/17/2023 06:01 PM
Page 24 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31976QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31967
LCS-V31967 LCSD-V31967Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.7 10410621.220.0µg/L1,2-Dichloropropane 70-130 2.3 20.0
20.2 10110520.920.0µg/L1,3-Dichloropropane 70-130 3.4 20.0
21.0 10510120.120.0µg/L2,2-Dichloropropane 70-130 4.3 20.0
21.5 10810420.720.0µg/L1,1-Dichloropropene 70-130 3.7 20.0
20.5 10310420.820.0µg/Lcis-1,3-Dichloropropene 70-130 1.4 20.0
20.3 10210621.220.0µg/Ltrans-1,3-Dichloropropene 70-130 4.3 20.0
509 10299.8499500µg/LEthanol 60-140 1.9 20.0
19.5 97.595.019.020.0µg/LEthylbenzene 70-130 2.5 20.0
22.2 11111222.320.0µg/LHexachlorobutadiene 70-130 0.4 20.0
21.1 10610520.920.0µg/L2-Hexanone 60-140 0.9 20.0
20.2 10199.519.920.0µg/LIsopropylbenzene 70-130 1.4 20.0
20.6 10310220.320.0µg/L4-Isopropyl toluene 70-130 1.4 20.0
19.4 97.093.018.620.0µg/LMethyl Ethyl Ketone (MEK)60-140 4.2 20.0
21.1 10699.019.820.0µg/LMethyl tert-butyl ether (MTBE)70-130 6.3 20.0
22.0 11011122.120.0µg/L4-Methyl-2-Pentanone 60-140 0.4 20.0
22.4 11210721.420.0µg/LMethylene Chloride 70-130 4.5 20.0
20.6 10310120.120.0µg/LNaphthalene 70-130 2.4 20.0
20.3 10298.519.720.0µg/Ln-Propylbenzene 70-130 3.0 20.0
20.7 10495.519.120.0µg/LStyrene 70-130 8.0 20.0
19.7 98.598.019.620.0µg/L1,1,1,2-Tetrachloroethane 70-130 0.5 20.0
21.2 10610420.720.0µg/L1,1,2,2-Tetrachloroethane 70-130 2.3 20.0
20.2 10110420.720.0µg/LTetrachloroethene 70-130 2.4 20.0
20.1 10110220.320.0µg/LToluene 70-130 0.9 20.0
22.7 11412324.520.0µg/L1,2,3-Trichlorobenzene 70-130 7.6 20.0
22.4 11211322.520.0µg/L1,2,4-Trichlorobenzene 70-130 0.4 20.0
20.3 10296.519.320.0µg/L1,1,1-Trichloroethane 70-130 5.0 20.0
Page 5 of 12Date:04/17/2023 06:01 PM
Page 25 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31976QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31967
LCS-V31967 LCSD-V31967Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.5 10310621.220.0µg/L1,1,2-Trichloroethane 70-130 3.3 20.0
20.3 10295.519.120.0µg/LTrichloroethene 70-130 6.0 20.0
19.6 98.086.517.320.0µg/LTrichlorofluoromethane 60-140 12.4 20.0
20.2 10196.019.220.0µg/L1,2,3-Trichloropropane 70-130 5.0 20.0
20.0 10099.019.820.0µg/L1,2,4-Trimethylbenzene 70-130 1.0 20.0
19.7 98.599.019.820.0µg/L1,3,5-Trimethylbenzene 70-130 0.5 20.0
20.8 10410120.120.0µg/LVinyl Acetate 60-140 3.4 20.0
20.5 10390.518.120.0µg/LVinyl Chloride 60-140 12.4 20.0
20.1 10193.518.720.0µg/Lo-Xylene 70-130 7.2 20.0
41.4 10497.038.840.0µg/Lm,p-Xylene 70-130 6.4 20.0
1011014-Bromofluorobenzene (S)70-130
98.498.8Dibromofluoromethane (S)70-130
1021011,2-Dichloroethane - d4 (S)70-130
99.2105Toluene-d8 (S)70-130
Page 6 of 12Date:04/17/2023 06:01 PM
Page 26 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32046QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32045
Associated Lab Samples: 92905
LRB-V32045 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
04/13/23 19:4310.01.80<1.80µg/LAcetone
04/13/23 19:430.5000.180<0.180µg/LBenzene
04/13/23 19:430.5000.210<0.210µg/LBromobenzene
04/13/23 19:431.000.420<0.420µg/LBromochloromethane
04/13/23 19:430.5000.160<0.160µg/LBromodichloromethane
04/13/23 19:435.001.50<1.50µg/LBromoform
04/13/23 19:431.000.280<0.280µg/LBromomethane
04/13/23 19:430.5000.180<0.180µg/Ln-Butylbenzene
04/13/23 19:430.5000.200<0.200µg/Lsec-Butyl benzene
04/13/23 19:432.000.920<0.920µg/Ltert-Butyl benzene
04/13/23 19:430.5000.180<0.180µg/LCarbon Tetrachloride
04/13/23 19:430.5000.190<0.190µg/LChlorobenzene
04/13/23 19:430.5000.190<0.190µg/LChlorodibromomethane
04/13/23 19:431.000.430<0.430µg/LChloroethane
04/13/23 19:430.5000.220<0.220µg/LChloroform
04/13/23 19:430.5000.220<0.220µg/LChloromethane
04/13/23 19:430.5000.200<0.200µg/L2-Chlorotoluene
04/13/23 19:430.5000.200<0.200µg/L4-Chlorotoluene
04/13/23 19:430.5000.500<0.500µg/LDi-Isopropyl Ether (DIPE)
04/13/23 19:432.001.10<1.10µg/L1,2-Dibromo-3-Chloropropane
04/13/23 19:430.5000.200<0.200µg/L1,2-Dibromoethane
04/13/23 19:430.5000.230<0.230µg/LDibromomethane
04/13/23 19:430.5000.220<0.220µg/L1,2-Dichlorobenzene
04/13/23 19:430.5000.190<0.190µg/L1,3-Dichlorobenzene
04/13/23 19:430.5000.210<0.210µg/L1,4-Dichlorobenzene
04/13/23 19:435.001.20<1.20µg/LDichlorodifluoromethane
04/13/23 19:430.5000.240<0.240µg/L1,1-Dichloroethane
Page 7 of 12Date:04/17/2023 06:01 PM
Page 27 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32046QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32045
Associated Lab Samples: 92905
LRB-V32045 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
04/13/23 19:430.5000.150<0.150µg/L1,2-Dichloroethane
04/13/23 19:430.5000.150<0.150µg/L1,1-Dichloroethene
04/13/23 19:430.5000.200<0.200µg/Lcis-1,2-Dichloroethene
04/13/23 19:430.5000.180<0.180µg/Ltrans-1,2-Dichloroethene
04/13/23 19:430.5000.190<0.190µg/L1,2-Dichloropropane
04/13/23 19:430.5000.130<0.130µg/L1,3-Dichloropropane
04/13/23 19:432.000.210<0.210µg/L2,2-Dichloropropane
04/13/23 19:430.5000.200<0.200µg/L1,1-Dichloropropene
04/13/23 19:430.5000.210<0.210µg/Lcis-1,3-Dichloropropene
04/13/23 19:430.5000.150<0.150µg/Ltrans-1,3-Dichloropropene
04/13/23 19:4320042.0<42.0µg/LEthanol
04/13/23 19:430.5000.170<0.170µg/LEthylbenzene
04/13/23 19:433.000.350<0.350µg/LHexachlorobutadiene
04/13/23 19:431.000.380<0.380µg/L2-Hexanone
04/13/23 19:430.5000.180<0.180µg/LIsopropylbenzene
04/13/23 19:430.5000.089<0.089µg/L4-Isopropyl toluene
04/13/23 19:435.000.710<0.710µg/LMethyl Ethyl Ketone (MEK)
04/13/23 19:431.000.140<0.140µg/LMethyl tert-butyl ether (MTBE)
04/13/23 19:431.000.078<0.078µg/L4-Methyl-2-Pentanone
04/13/23 19:432.000.330<0.330µg/LMethylene Chloride
04/13/23 19:431.000.470<0.470µg/LNaphthalene
04/13/23 19:430.5000.190<0.190µg/Ln-Propylbenzene
04/13/23 19:430.5000.220<0.220µg/LStyrene
04/13/23 19:430.5000.160<0.160µg/L1,1,1,2-Tetrachloroethane
04/13/23 19:430.5000.160<0.160µg/L1,1,2,2-Tetrachloroethane
04/13/23 19:430.5000.220<0.220µg/LTetrachloroethene
04/13/23 19:430.5000.220<0.220µg/LToluene
Page 8 of 12Date:04/17/2023 06:01 PM
Page 28 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32046QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32045
Associated Lab Samples: 92905
LRB-V32045 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
04/13/23 19:430.5000.380<0.380µg/L1,2,3-Trichlorobenzene
04/13/23 19:430.5000.310<0.310µg/L1,2,4-Trichlorobenzene
04/13/23 19:430.5000.160<0.160µg/L1,1,1-Trichloroethane
04/13/23 19:430.5000.096<0.096µg/L1,1,2-Trichloroethane
04/13/23 19:430.5000.180<0.180µg/LTrichloroethene
04/13/23 19:430.5000.180<0.180µg/LTrichlorofluoromethane
04/13/23 19:430.5000.270<0.270µg/L1,2,3-Trichloropropane
04/13/23 19:430.5000.190<0.190µg/L1,2,4-Trimethylbenzene
04/13/23 19:430.5000.180<0.180µg/L1,3,5-Trimethylbenzene
04/13/23 19:435.001.00<1.00µg/LVinyl Acetate
04/13/23 19:430.5000.170<0.170µg/LVinyl Chloride
04/13/23 19:430.5000.210<0.210µg/Lo-Xylene
04/13/23 19:431.000.420<0.420µg/Lm,p-Xylene
04/13/23 19:434-Bromofluorobenzene (S)109 70-130
04/13/23 19:43Dibromofluoromethane (S)96.2 70-130
04/13/23 19:431,2-Dichloroethane - d4 (S)92.0 70-130
04/13/23 19:43Toluene-d8 (S)93.8 70-130
LCS-V32045 LCSD-V32045Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
46.0 11512550.140.0µg/LAcetone 40-160 8.5 20.0
21.8 10911422.720.0µg/LBenzene 70-130 4.0 20.0
21.6 10811021.920.0µg/LBromobenzene 70-130 1.3 20.0
22.8 11411322.520.0µg/LBromochloromethane 70-130 1.3 20.0
20.0 10010120.220.0µg/LBromodichloromethane 70-130 0.9 20.0
Page 9 of 12Date:04/17/2023 06:01 PM
Page 29 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32046QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32045
LCS-V32045 LCSD-V32045Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
19.0 95.090.018.020.0µg/LBromoform 70-130 5.4 20.0
17.9 89.596.519.320.0µg/LBromomethane 60-140 7.5 20.0
20.4 10210821.620.0µg/Ln-Butylbenzene 70-130 5.7 20.0
20.2 10110520.920.0µg/Lsec-Butyl benzene 70-130 3.4 20.0
19.8 99.010320.620.0µg/Ltert-Butyl benzene 70-130 3.9 20.0
16.7 83.590.018.020.0µg/LCarbon Tetrachloride 70-130 7.4 20.0
21.0 10511022.020.0µg/LChlorobenzene 70-130 4.6 20.0
18.5 92.593.018.620.0µg/LChlorodibromomethane 70-130 0.5 20.0
18.6 93.099.019.820.0µg/LChloroethane 60-140 6.2 20.0
20.5 10311022.020.0µg/LChloroform 70-130 7.0 20.0
19.5 97.510420.720.0µg/LChloromethane 60-140 5.9 20.0
21.1 10611021.920.0µg/L2-Chlorotoluene 70-130 3.7 20.0
21.9 11010821.520.0µg/L4-Chlorotoluene 70-130 1.8 20.0
23.5 11811923.820.0µg/LDi-Isopropyl Ether (DIPE)70-130 1.2 20.0
19.6 98.088.017.620.0µg/L1,2-Dibromo-3-Chloropropane 70-130 10.7 20.0
21.7 10910120.120.0µg/L1,2-Dibromoethane 70-130 7.6 20.0
22.7 11411723.320.0µg/LDibromomethane 70-130 2.6 20.0
21.2 10610621.220.0µg/L1,2-Dichlorobenzene 70-130 0.0 20.0
20.9 10510621.120.0µg/L1,3-Dichlorobenzene 70-130 0.9 20.0
21.3 10710921.720.0µg/L1,4-Dichlorobenzene 70-130 1.8 20.0
15.6 78.080.016.020.0µg/LDichlorodifluoromethane 60-140 2.5 20.0
20.9 10511122.120.0µg/L1,1-Dichloroethane 70-130 5.5 20.0
20.0 10010120.220.0µg/L1,2-Dichloroethane 70-130 0.9 20.0
19.3 96.594.518.920.0µg/L1,1-Dichloroethene 70-130 2.0 20.0
21.8 10911623.120.0µg/Lcis-1,2-Dichloroethene 70-130 5.7 20.0
20.5 10310721.420.0µg/Ltrans-1,2-Dichloroethene 70-130 4.2 20.0
Page 10 of 12Date:04/17/2023 06:01 PM
Page 30 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32046QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32045
LCS-V32045 LCSD-V32045Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
21.9 11011522.920.0µg/L1,2-Dichloropropane 70-130 4.4 20.0
23.1 11611422.720.0µg/L1,3-Dichloropropane 70-130 1.7 20.0
19.1 95.510220.420.0µg/L2,2-Dichloropropane 70-130 6.5 20.0
20.1 10110621.220.0µg/L1,1-Dichloropropene 70-130 5.3 20.0
21.9 11011022.020.0µg/Lcis-1,3-Dichloropropene 70-130 0.4 20.0
21.5 10811022.020.0µg/Ltrans-1,3-Dichloropropene 70-130 2.2 20.0
531 10691.8459500µg/LEthanol 60-140 14.5 20.0
19.8 99.010420.820.0µg/LEthylbenzene 70-130 4.9 20.0
17.8 89.095.019.020.0µg/LHexachlorobutadiene 70-130 6.5 20.0
20.8 10411022.020.0µg/L2-Hexanone 60-140 5.6 20.0
20.3 10210821.520.0µg/LIsopropylbenzene 70-130 5.7 20.0
20.0 10010420.720.0µg/L4-Isopropyl toluene 70-130 3.4 20.0
22.3 11211022.020.0µg/LMethyl Ethyl Ketone (MEK)60-140 1.3 20.0
22.2 11111022.020.0µg/LMethyl tert-butyl ether (MTBE)70-130 0.9 20.0
25.4 12712324.520.0µg/L4-Methyl-2-Pentanone 60-140 3.6 20.0
21.5 10811322.620.0µg/LMethylene Chloride 70-130 4.9 20.0
20.1 10197.519.520.0µg/LNaphthalene 70-130 3.0 20.0
21.2 10610921.820.0µg/Ln-Propylbenzene 70-130 2.7 20.0
21.8 10911322.620.0µg/LStyrene 70-130 3.6 20.0
19.8 99.099.519.920.0µg/L1,1,1,2-Tetrachloroethane 70-130 0.5 20.0
23.0 11511021.920.0µg/L1,1,2,2-Tetrachloroethane 70-130 4.8 20.0
18.9 94.599.019.820.0µg/LTetrachloroethene 70-130 4.6 20.0
22.0 11011623.220.0µg/LToluene 70-130 5.3 20.0
18.8 94.010120.120.0µg/L1,2,3-Trichlorobenzene 70-130 6.6 20.0
17.7 88.587.017.420.0µg/L1,2,4-Trichlorobenzene 70-130 1.7 20.0
19.2 96.010120.120.0µg/L1,1,1-Trichloroethane 70-130 4.5 20.0
Page 11 of 12Date:04/17/2023 06:01 PM
Page 31 of 34
Quality Control Data
23-094-0017Report No:
Project Description:
Client ID:Geological Resources, Inc.
Gate #402
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32046QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32045
LCS-V32045 LCSD-V32045Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
23.5 11811723.320.0µg/L1,1,2-Trichloroethane 70-130 0.8 20.0
20.6 10310921.720.0µg/LTrichloroethene 70-130 5.2 20.0
15.7 78.583.516.720.0µg/LTrichlorofluoromethane 60-140 6.1 20.0
20.3 10210320.520.0µg/L1,2,3-Trichloropropane 70-130 0.9 20.0
20.6 10310721.420.0µg/L1,2,4-Trimethylbenzene 70-130 3.8 20.0
21.1 10610721.320.0µg/L1,3,5-Trimethylbenzene 70-130 0.9 20.0
22.5 11312124.120.0µg/LVinyl Acetate 60-140 6.8 20.0
17.7 88.595.519.120.0µg/LVinyl Chloride 60-140 7.6 20.0
20.8 10410721.420.0µg/Lo-Xylene 70-130 2.8 20.0
42.4 10611244.840.0µg/Lm,p-Xylene 70-130 5.5 20.0
1071054-Bromofluorobenzene (S)70-130
96.296.0Dibromofluoromethane (S)70-130
92.694.01,2-Dichloroethane - d4 (S)70-130
96.496.0Toluene-d8 (S)70-130
Page 12 of 12Date:04/17/2023 06:01 PM
Page 32 of 34