MO-2489_3898_G_WSW_20230127_LITTLEHREREQ

January 27, 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: 3898 Enclosed please find the analytical results for a water sample collected on January 10, 2023, from the Little water supply well, identified as WSW-Little, located at 5683 East NC Highway 150, Denver, Catawba 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): Little Sample Analytical Results
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-011-0101
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI # 2899 Received : 01/11/2023
Express Food Mart
Report Date : 01/19/2023
Sample ID :
Lab No :
Sampled:Little WSW
97291 Matrix:
1/10/2023 10:56
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V29020 01/18/23 14:00
<1.80 µg/L 1.80 10.0Acetone 1 01/19/23 05:39 V29021MSA
0.228 J µg/L 0.180 0.500Benzene 1 01/19/23 05:39 V29021MSA
<0.210 µg/L 0.210 0.500Bromobenzene 1 01/19/23 05:39 V29021MSA
<0.420 µg/L 0.420 1.00Bromochloromethane 1 01/19/23 05:39 V29021MSA
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 01/19/23 05:39 V29021MSA
<1.50 µg/L 1.50 5.00Bromoform 1 01/19/23 05:39 V29021MSA
<0.280 µg/L 0.280 1.00Bromomethane 1 01/19/23 05:39 V29021MSA
<0.180 µg/L 0.180 0.500n-Butylbenzene 1 01/19/23 05:39 V29021MSA
<0.200 µg/L 0.200 0.500sec-Butyl benzene 1 01/19/23 05:39 V29021MSA
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 01/19/23 05:39 V29021MSA
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 01/19/23 05:39 V29021MSA
<0.190 µg/L 0.190 0.500Chlorobenzene 1 01/19/23 05:39 V29021MSA
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 01/19/23 05:39 V29021MSA
<0.430 µg/L 0.430 1.00Chloroethane 1 01/19/23 05:39 V29021MSA
0.978 µg/L 0.220 0.500Chloroform 1 01/19/23 05:39 V29021MSA
<0.220 µg/L 0.220 0.500Chloromethane 1 01/19/23 05:39 V29021MSA
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 01/19/23 05:39 V29021MSA
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 01/19/23 05:39 V29021MSA
1.06 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 01/19/23 05:39 V29021MSA
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 01/19/23 05:39 V29021MSA
<0.230 µg/L 0.230 0.500Dibromomethane 1 01/19/23 05:39 V29021MSA
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 01/19/23 05:39 V29021MSA
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 01/19/23 05:39 V29021MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 6 of 22
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-011-0101
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI # 2899 Received : 01/11/2023
Express Food Mart
Report Date : 01/19/2023
Sample ID :
Lab No :
Sampled:Little WSW
97291 Matrix:
1/10/2023 10:56
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V29020 01/18/23 14:00
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 01/19/23 05:39 V29021MSA
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 01/19/23 05:39 V29021MSA
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 01/19/23 05:39 V29021MSA
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 01/19/23 05:39 V29021MSA
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 01/19/23 05:39 V29021MSA
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 01/19/23 05:39 V29021MSA
<0.180 µg/L 0.180 0.500trans-1,2-Dichloroethene 1 01/19/23 05:39 V29021MSA
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 01/19/23 05:39 V29021MSA
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 01/19/23 05:39 V29021MSA
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 01/19/23 05:39 V29021MSA
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 01/19/23 05:39 V29021MSA
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 01/19/23 05:39 V29021MSA
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 01/19/23 05:39 V29021MSA
<42.0 µg/L 42.0 200Ethanol 1 01/19/23 05:39 V29021MSA
<0.170 µg/L 0.170 0.500Ethylbenzene 1 01/19/23 05:39 V29021MSA
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 01/19/23 05:39 V29021MSA
<0.380 µg/L 0.380 1.002-Hexanone 1 01/19/23 05:39 V29021MSA
<0.180 µg/L 0.180 0.500Isopropylbenzene 1 01/19/23 05:39 V29021MSA
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 01/19/23 05:39 V29021MSA
<0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 01/19/23 05:39 V29021MSA
<0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 01/19/23 05:39 V29021MSA
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 01/19/23 05:39 V29021MSA
<0.330 µg/L 0.330 2.00Methylene Chloride 1 01/19/23 05:39 V29021MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 7 of 22
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-011-0101
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI # 2899 Received : 01/11/2023
Express Food Mart
Report Date : 01/19/2023
Sample ID :
Lab No :
Sampled:Little WSW
97291 Matrix:
1/10/2023 10:56
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V29020 01/18/23 14:00
<0.470 µg/L 0.470 1.00Naphthalene 1 01/19/23 05:39 V29021MSA
<0.190 µg/L 0.190 0.500n-Propylbenzene 1 01/19/23 05:39 V29021MSA
<0.220 µg/L 0.220 0.500Styrene 1 01/19/23 05:39 V29021MSA
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 01/19/23 05:39 V29021MSA
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 01/19/23 05:39 V29021MSA
<0.220 µg/L 0.220 0.500Tetrachloroethene 1 01/19/23 05:39 V29021MSA
<0.220 µg/L 0.220 0.500Toluene 1 01/19/23 05:39 V29021MSA
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 01/19/23 05:39 V29021MSA
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 01/19/23 05:39 V29021MSA
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 01/19/23 05:39 V29021MSA
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 01/19/23 05:39 V29021MSA
<0.180 µg/L 0.180 0.500Trichloroethene 1 01/19/23 05:39 V29021MSA
<0.180 µg/L 0.180 0.500Trichlorofluoromethane 1 01/19/23 05:39 V29021MSA
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 01/19/23 05:39 V29021MSA
<0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 01/19/23 05:39 V29021MSA
<0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 01/19/23 05:39 V29021MSA
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 01/19/23 05:39 V29021MSA
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 01/19/23 05:39 V29021MSA
<0.210 µg/L 0.210 0.500o-Xylene 1 01/19/23 05:39 V29021MSA
<0.420 µg/L 0.420 1.00m,p-Xylene 1 01/19/23 05:39 V29021MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 8 of 22
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-011-0101
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI # 2899 Received : 01/11/2023
Express Food Mart
Report Date : 01/19/2023
Sample ID :
Lab No :
Sampled:Little WSW
97291 Matrix:
1/10/2023 10:56
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V29020 01/18/23 14:00
<0.21 µg/L 0.210 0.500Xylene (Total)1 01/19/23 05:39 V29021
Surrogate: 4-Bromofluorobenzene 104 Limits: 70-130%01/19/23 05:391 MSA V29021
Surrogate: Dibromofluoromethane 94.2 Limits: 70-130%01/19/23 05:391 MSA V29021
Surrogate: 1,2-Dichloroethane - d4 96.2 Limits: 70-130%01/19/23 05:391 MSA V29021
Surrogate: Toluene-d8 98.6 Limits: 70-130%01/19/23 05:391 MSA V29021
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
EPA-504.1(PREP)
EPA-504.1 Prep Batch(es):V28888 01/16/23 09:30
<0.00333 µg/L 0.00333 0.02021,2-Dibromoethane 1 01/16/23 12:19 V28908AMP
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 9 of 22
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-011-0101
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI # 2899 Received : 01/11/2023
Express Food Mart
Report Date : 01/19/2023
Sample ID :
Lab No :
Sampled:Trip Blank
97292 Matrix:
1/10/2023 0:00
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V29020 01/18/23 14:00
<1.80 µg/L 1.80 10.0Acetone 1 01/19/23 04:23 V29021MSA
<0.180 µg/L 0.180 0.500Benzene 1 01/19/23 04:23 V29021MSA
<0.210 µg/L 0.210 0.500Bromobenzene 1 01/19/23 04:23 V29021MSA
<0.420 µg/L 0.420 1.00Bromochloromethane 1 01/19/23 04:23 V29021MSA
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 01/19/23 04:23 V29021MSA
<1.50 µg/L 1.50 5.00Bromoform 1 01/19/23 04:23 V29021MSA
<0.280 µg/L 0.280 1.00Bromomethane 1 01/19/23 04:23 V29021MSA
<0.180 µg/L 0.180 0.500n-Butylbenzene 1 01/19/23 04:23 V29021MSA
<0.200 µg/L 0.200 0.500sec-Butyl benzene 1 01/19/23 04:23 V29021MSA
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 01/19/23 04:23 V29021MSA
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 01/19/23 04:23 V29021MSA
<0.190 µg/L 0.190 0.500Chlorobenzene 1 01/19/23 04:23 V29021MSA
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 01/19/23 04:23 V29021MSA
<0.430 µg/L 0.430 1.00Chloroethane 1 01/19/23 04:23 V29021MSA
<0.220 µg/L 0.220 0.500Chloroform 1 01/19/23 04:23 V29021MSA
<0.220 µg/L 0.220 0.500Chloromethane 1 01/19/23 04:23 V29021MSA
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 01/19/23 04:23 V29021MSA
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 01/19/23 04:23 V29021MSA
<0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 01/19/23 04:23 V29021MSA
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 01/19/23 04:23 V29021MSA
<0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 01/19/23 04:23 V29021MSA
<0.230 µg/L 0.230 0.500Dibromomethane 1 01/19/23 04:23 V29021MSA
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 01/19/23 04:23 V29021MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 10 of 22
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-011-0101
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI # 2899 Received : 01/11/2023
Express Food Mart
Report Date : 01/19/2023
Sample ID :
Lab No :
Sampled:Trip Blank
97292 Matrix:
1/10/2023 0:00
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V29020 01/18/23 14:00
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 01/19/23 04:23 V29021MSA
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 01/19/23 04:23 V29021MSA
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 01/19/23 04:23 V29021MSA
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 01/19/23 04:23 V29021MSA
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 01/19/23 04:23 V29021MSA
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 01/19/23 04:23 V29021MSA
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 01/19/23 04:23 V29021MSA
<0.180 µg/L 0.180 0.500trans-1,2-Dichloroethene 1 01/19/23 04:23 V29021MSA
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 01/19/23 04:23 V29021MSA
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 01/19/23 04:23 V29021MSA
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 01/19/23 04:23 V29021MSA
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 01/19/23 04:23 V29021MSA
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 01/19/23 04:23 V29021MSA
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 01/19/23 04:23 V29021MSA
<42.0 µg/L 42.0 200Ethanol 1 01/19/23 04:23 V29021MSA
<0.170 µg/L 0.170 0.500Ethylbenzene 1 01/19/23 04:23 V29021MSA
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 01/19/23 04:23 V29021MSA
<0.380 µg/L 0.380 1.002-Hexanone 1 01/19/23 04:23 V29021MSA
<0.180 µg/L 0.180 0.500Isopropylbenzene 1 01/19/23 04:23 V29021MSA
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 01/19/23 04:23 V29021MSA
<0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 01/19/23 04:23 V29021MSA
<0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 01/19/23 04:23 V29021MSA
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 01/19/23 04:23 V29021MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 11 of 22
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-011-0101
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI # 2899 Received : 01/11/2023
Express Food Mart
Report Date : 01/19/2023
Sample ID :
Lab No :
Sampled:Trip Blank
97292 Matrix:
1/10/2023 0:00
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V29020 01/18/23 14:00
<0.330 µg/L 0.330 2.00Methylene Chloride 1 01/19/23 04:23 V29021MSA
<0.470 µg/L 0.470 1.00Naphthalene 1 01/19/23 04:23 V29021MSA
<0.190 µg/L 0.190 0.500n-Propylbenzene 1 01/19/23 04:23 V29021MSA
<0.220 µg/L 0.220 0.500Styrene 1 01/19/23 04:23 V29021MSA
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 01/19/23 04:23 V29021MSA
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 01/19/23 04:23 V29021MSA
<0.220 µg/L 0.220 0.500Tetrachloroethene 1 01/19/23 04:23 V29021MSA
<0.220 µg/L 0.220 0.500Toluene 1 01/19/23 04:23 V29021MSA
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 01/19/23 04:23 V29021MSA
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 01/19/23 04:23 V29021MSA
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 01/19/23 04:23 V29021MSA
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 01/19/23 04:23 V29021MSA
<0.180 µg/L 0.180 0.500Trichloroethene 1 01/19/23 04:23 V29021MSA
<0.180 µg/L 0.180 0.500Trichlorofluoromethane 1 01/19/23 04:23 V29021MSA
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 01/19/23 04:23 V29021MSA
<0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 01/19/23 04:23 V29021MSA
<0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 01/19/23 04:23 V29021MSA
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 01/19/23 04:23 V29021MSA
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 01/19/23 04:23 V29021MSA
<0.210 µg/L 0.210 0.500o-Xylene 1 01/19/23 04:23 V29021MSA
<0.420 µg/L 0.420 1.00m,p-Xylene 1 01/19/23 04:23 V29021MSA
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 12 of 22
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28110
23-011-0101
00087
Geological Resources, Inc.
3502 Hayes Road
Scott Ball
Monroe
Danyale Love
Project Manager
GRI # 2899 Received : 01/11/2023
Express Food Mart
Report Date : 01/19/2023
Sample ID :
Lab No :
Sampled:Trip Blank
97292 Matrix:
1/10/2023 0:00
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V29020 01/18/23 14:00
<0.21 µg/L 0.210 0.500Xylene (Total)1 01/19/23 04:23 V29021
Surrogate: 4-Bromofluorobenzene 101 Limits: 70-130%01/19/23 04:231 MSA V29021
Surrogate: Dibromofluoromethane 97.4 Limits: 70-130%01/19/23 04:231 MSA V29021
Surrogate: 1,2-Dichloroethane - d4 96.8 Limits: 70-130%01/19/23 04:231 MSA V29021
Surrogate: Toluene-d8 99.4 Limits: 70-130%01/19/23 04:231 MSA V29021
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 13 of 22
Quality Control Data
23-011-0101Report No:
Project Description:
Client ID:Geological Resources, Inc.
Express Food Mart
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V29021QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V29020
Associated Lab Samples: 97291, 97292
LRB-V29020 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
01/19/23 03:5810.01.80<1.80µg/LAcetone
01/19/23 03:580.5000.180<0.180µg/LBenzene
01/19/23 03:580.5000.210<0.210µg/LBromobenzene
01/19/23 03:581.000.420<0.420µg/LBromochloromethane
01/19/23 03:580.5000.160<0.160µg/LBromodichloromethane
01/19/23 03:585.001.50<1.50µg/LBromoform
01/19/23 03:581.000.280<0.280µg/LBromomethane
01/19/23 03:580.5000.180<0.180µg/Ln-Butylbenzene
01/19/23 03:580.5000.200<0.200µg/Lsec-Butyl benzene
01/19/23 03:582.000.920<0.920µg/Ltert-Butyl benzene
01/19/23 03:580.5000.180<0.180µg/LCarbon Tetrachloride
01/19/23 03:580.5000.190<0.190µg/LChlorobenzene
01/19/23 03:580.5000.190<0.190µg/LChlorodibromomethane
01/19/23 03:581.000.430<0.430µg/LChloroethane
01/19/23 03:580.5000.220<0.220µg/LChloroform
01/19/23 03:580.5000.220<0.220µg/LChloromethane
01/19/23 03:580.5000.200<0.200µg/L2-Chlorotoluene
01/19/23 03:580.5000.200<0.200µg/L4-Chlorotoluene
01/19/23 03:580.5000.500<0.500µg/LDi-Isopropyl Ether (DIPE)
01/19/23 03:582.001.10<1.10µg/L1,2-Dibromo-3-Chloropropane
01/19/23 03:580.5000.200<0.200µg/L1,2-Dibromoethane
01/19/23 03:580.5000.230<0.230µg/LDibromomethane
01/19/23 03:580.5000.220<0.220µg/L1,2-Dichlorobenzene
01/19/23 03:580.5000.190<0.190µg/L1,3-Dichlorobenzene
01/19/23 03:580.5000.210<0.210µg/L1,4-Dichlorobenzene
01/19/23 03:585.001.20<1.20µg/LDichlorodifluoromethane
01/19/23 03:580.5000.240<0.240µg/L1,1-Dichloroethane
Page 1 of 7Date:01/19/2023 05:30 PM
Page 14 of 22
Quality Control Data
23-011-0101Report No:
Project Description:
Client ID:Geological Resources, Inc.
Express Food Mart
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V29021QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V29020
Associated Lab Samples: 97291, 97292
LRB-V29020 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
01/19/23 03:580.5000.150<0.150µg/L1,2-Dichloroethane
01/19/23 03:580.5000.150<0.150µg/L1,1-Dichloroethene
01/19/23 03:580.5000.200<0.200µg/Lcis-1,2-Dichloroethene
01/19/23 03:580.5000.180<0.180µg/Ltrans-1,2-Dichloroethene
01/19/23 03:580.5000.190<0.190µg/L1,2-Dichloropropane
01/19/23 03:580.5000.130<0.130µg/L1,3-Dichloropropane
01/19/23 03:582.000.210<0.210µg/L2,2-Dichloropropane
01/19/23 03:580.5000.200<0.200µg/L1,1-Dichloropropene
01/19/23 03:580.5000.210<0.210µg/Lcis-1,3-Dichloropropene
01/19/23 03:580.5000.150<0.150µg/Ltrans-1,3-Dichloropropene
01/19/23 03:5820042.0<42.0µg/LEthanol
01/19/23 03:580.5000.170<0.170µg/LEthylbenzene
01/19/23 03:583.000.350<0.350µg/LHexachlorobutadiene
01/19/23 03:581.000.380<0.380µg/L2-Hexanone
01/19/23 03:580.5000.180<0.180µg/LIsopropylbenzene
01/19/23 03:580.5000.089<0.089µg/L4-Isopropyl toluene
01/19/23 03:585.000.710<0.710µg/LMethyl Ethyl Ketone (MEK)
01/19/23 03:581.000.140<0.140µg/LMethyl tert-butyl ether (MTBE)
01/19/23 03:581.000.078<0.078µg/L4-Methyl-2-Pentanone
01/19/23 03:582.000.330<0.330µg/LMethylene Chloride
01/19/23 03:581.000.470<0.470µg/LNaphthalene
01/19/23 03:580.5000.190<0.190µg/Ln-Propylbenzene
01/19/23 03:580.5000.220<0.220µg/LStyrene
01/19/23 03:580.5000.160<0.160µg/L1,1,1,2-Tetrachloroethane
01/19/23 03:580.5000.160<0.160µg/L1,1,2,2-Tetrachloroethane
01/19/23 03:580.5000.220<0.220µg/LTetrachloroethene
01/19/23 03:580.5000.220<0.220µg/LToluene
Page 2 of 7Date:01/19/2023 05:30 PM
Page 15 of 22
Quality Control Data
23-011-0101Report No:
Project Description:
Client ID:Geological Resources, Inc.
Express Food Mart
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V29021QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V29020
Associated Lab Samples: 97291, 97292
LRB-V29020 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
01/19/23 03:580.5000.380<0.380µg/L1,2,3-Trichlorobenzene
01/19/23 03:580.5000.310<0.310µg/L1,2,4-Trichlorobenzene
01/19/23 03:580.5000.160<0.160µg/L1,1,1-Trichloroethane
01/19/23 03:580.5000.096<0.096µg/L1,1,2-Trichloroethane
01/19/23 03:580.5000.180<0.180µg/LTrichloroethene
01/19/23 03:580.5000.180<0.180µg/LTrichlorofluoromethane
01/19/23 03:580.5000.270<0.270µg/L1,2,3-Trichloropropane
01/19/23 03:580.5000.190<0.190µg/L1,2,4-Trimethylbenzene
01/19/23 03:580.5000.180<0.180µg/L1,3,5-Trimethylbenzene
01/19/23 03:585.001.00<1.00µg/LVinyl Acetate
01/19/23 03:580.5000.170<0.170µg/LVinyl Chloride
01/19/23 03:580.5000.210<0.210µg/Lo-Xylene
01/19/23 03:581.000.420<0.420µg/Lm,p-Xylene
01/19/23 03:584-Bromofluorobenzene (S)123 70-130
01/19/23 03:58Dibromofluoromethane (S)93.0 70-130
01/19/23 03:581,2-Dichloroethane - d4 (S)97.0 70-130
01/19/23 03:58Toluene-d8 (S)95.4 70-130
LCS-V29020 LCSD-V29020Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
24.2 60.562.525.040.0µg/LAcetone 40-160 3.2 20.0
19.3 96.599.019.820.0µg/LBenzene 70-130 2.5 20.0
20.4 10210621.220.0µg/LBromobenzene 70-130 3.8 20.0
20.3 10210220.320.0µg/LBromochloromethane 70-130 0.0 20.0
19.6 98.099.019.820.0µg/LBromodichloromethane 70-130 1.0 20.0
Page 3 of 7Date:01/19/2023 05:30 PM
Page 16 of 22
Quality Control Data
23-011-0101Report No:
Project Description:
Client ID:Geological Resources, Inc.
Express Food Mart
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V29021QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V29020
LCS-V29020 LCSD-V29020Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
18.1 90.598.519.720.0µg/LBromoform 70-130 8.4 20.0
17.8 89.087.017.420.0µg/LBromomethane 60-140 2.2 20.0
20.1 10110521.020.0µg/Ln-Butylbenzene 70-130 4.3 20.0
19.8 99.010220.420.0µg/Lsec-Butyl benzene 70-130 2.9 20.0
19.7 98.510320.620.0µg/Ltert-Butyl benzene 70-130 4.4 20.0
18.8 94.096.019.220.0µg/LCarbon Tetrachloride 70-130 2.1 20.0
20.3 10210821.620.0µg/LChlorobenzene 70-130 6.2 20.0
18.3 91.591.018.220.0µg/LChlorodibromomethane 70-130 0.5 20.0
20.8 10410520.920.0µg/LChloroethane 60-140 0.4 20.0
20.1 10110320.520.0µg/LChloroform 70-130 1.9 20.0
18.9 94.597.019.420.0µg/LChloromethane 60-140 2.6 20.0
20.1 10110420.820.0µg/L2-Chlorotoluene 70-130 3.4 20.0
19.8 99.010520.920.0µg/L4-Chlorotoluene 70-130 5.4 20.0
19.2 96.010020.020.0µg/LDi-Isopropyl Ether (DIPE)70-130 4.0 20.0
18.6 93.085.517.120.0µg/L1,2-Dibromo-3-Chloropropane 70-130 8.4 20.0
19.4 97.010020.020.0µg/L1,2-Dibromoethane 70-130 3.0 20.0
19.7 98.594.518.920.0µg/LDibromomethane 70-130 4.1 20.0
19.7 98.510420.820.0µg/L1,2-Dichlorobenzene 70-130 5.4 20.0
19.5 97.510521.020.0µg/L1,3-Dichlorobenzene 70-130 7.4 20.0
19.4 97.010420.720.0µg/L1,4-Dichlorobenzene 70-130 6.4 20.0
21.8 10910621.220.0µg/LDichlorodifluoromethane 60-140 2.7 20.0
19.8 99.010420.720.0µg/L1,1-Dichloroethane 70-130 4.4 20.0
19.4 97.097.019.420.0µg/L1,2-Dichloroethane 70-130 0.0 20.0
19.5 97.510220.320.0µg/L1,1-Dichloroethene 70-130 4.0 20.0
19.5 97.510520.920.0µg/Lcis-1,2-Dichloroethene 70-130 6.9 20.0
20.8 10410721.320.0µg/Ltrans-1,2-Dichloroethene 70-130 2.3 20.0
Page 4 of 7Date:01/19/2023 05:30 PM
Page 17 of 22
Quality Control Data
23-011-0101Report No:
Project Description:
Client ID:Geological Resources, Inc.
Express Food Mart
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V29021QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V29020
LCS-V29020 LCSD-V29020Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.1 10110320.620.0µg/L1,2-Dichloropropane 70-130 2.4 20.0
19.2 96.099.019.820.0µg/L1,3-Dichloropropane 70-130 3.0 20.0
17.9 89.589.017.820.0µg/L2,2-Dichloropropane 70-130 0.5 20.0
20.6 10310220.420.0µg/L1,1-Dichloropropene 70-130 0.9 20.0
19.9 99.596.019.220.0µg/Lcis-1,3-Dichloropropene 70-130 3.5 20.0
19.7 98.595.019.020.0µg/Ltrans-1,3-Dichloropropene 70-130 3.6 20.0
388 77.677.4387500µg/LEthanol 60-140 0.2 20.0
19.3 96.510621.120.0µg/LEthylbenzene 70-130 8.9 20.0
20.5 10396.019.220.0µg/LHexachlorobutadiene 70-130 6.5 20.0
14.9 74.578.515.720.0µg/L2-Hexanone 60-140 5.2 20.0
21.1 10611022.020.0µg/LIsopropylbenzene 70-130 4.1 20.0
20.0 10010320.620.0µg/L4-Isopropyl toluene 70-130 2.9 20.0
15.7 78.570.014.020.0µg/LMethyl Ethyl Ketone (MEK)60-140 11.4 20.0
18.6 93.094.518.920.0µg/LMethyl tert-butyl ether (MTBE)70-130 1.6 20.0
15.6 78.078.515.720.0µg/L4-Methyl-2-Pentanone 60-140 0.6 20.0
20.1 10110220.320.0µg/LMethylene Chloride 70-130 0.9 20.0
19.8 99.010420.720.0µg/LNaphthalene 70-130 4.4 20.0
20.4 10210621.220.0µg/Ln-Propylbenzene 70-130 3.8 20.0
18.7 93.510621.120.0µg/LStyrene 70-130 12.0 20.0
21.3 10711122.220.0µg/L1,1,1,2-Tetrachloroethane 70-130 4.1 20.0
18.2 91.093.018.620.0µg/L1,1,2,2-Tetrachloroethane 70-130 2.1 20.0
21.3 10711222.420.0µg/LTetrachloroethene 70-130 5.0 20.0
20.4 10298.019.620.0µg/LToluene 70-130 4.0 20.0
23.3 11711122.120.0µg/L1,2,3-Trichlorobenzene 70-130 5.2 20.0
21.4 10710821.620.0µg/L1,2,4-Trichlorobenzene 70-130 0.9 20.0
20.2 10110120.220.0µg/L1,1,1-Trichloroethane 70-130 0.0 20.0
Page 5 of 7Date:01/19/2023 05:30 PM
Page 18 of 22
Quality Control Data
23-011-0101Report No:
Project Description:
Client ID:Geological Resources, Inc.
Express Food Mart
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V29021QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V29020
LCS-V29020 LCSD-V29020Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
19.2 96.094.018.820.0µg/L1,1,2-Trichloroethane 70-130 2.1 20.0
20.2 10110520.920.0µg/LTrichloroethene 70-130 3.4 20.0
20.0 10010020.020.0µg/LTrichlorofluoromethane 60-140 0.0 20.0
17.5 87.590.018.020.0µg/L1,2,3-Trichloropropane 70-130 2.8 20.0
20.3 10210621.120.0µg/L1,2,4-Trimethylbenzene 70-130 3.8 20.0
20.2 10110721.320.0µg/L1,3,5-Trimethylbenzene 70-130 5.3 20.0
15.8 79.070.514.120.0µg/LVinyl Acetate 60-140 11.3 20.0
20.7 10410621.120.0µg/LVinyl Chloride 60-140 1.9 20.0
19.3 96.510521.020.0µg/Lo-Xylene 70-130 8.4 20.0
40.1 10010943.540.0µg/Lm,p-Xylene 70-130 8.1 20.0
98.61034-Bromofluorobenzene (S)70-130
98.096.2Dibromofluoromethane (S)70-130
97.296.21,2-Dichloroethane - d4 (S)70-130
101104Toluene-d8 (S)70-130
Page 6 of 7Date:01/19/2023 05:30 PM
Page 19 of 22
Quality Control Data
23-011-0101Report No:
Project Description:
Client ID:Geological Resources, Inc.
Express Food Mart
QC Prep Batch Method:
EDB and DBCP by Microextraction GC/ECD
EPA-504.1
V28908QC Analytical Batch(es):
Analysis Method:
Analysis Description:
EPA-504.1(PREP)
QC Prep:V28888
Associated Lab Samples: 97291
LRB-V28888 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
01/16/23 11:230.02000.00330<0.00330µg/L1,2-Dibromoethane
LCS-V28888 LCSD-V28888Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
0.303 1211090.2730.250µg/L1,2-Dibromoethane 70-130 10.4 20.0
V 97308-DUP-V28888Duplicate
Max RPD
Parameter
AnalyzedRPDDUP
Result
Result
Units
20.0 01/16/23 13:351.9<0.0203< 0.0203µg/L1,2-Dibromoethane
V 97307-MS-V28888Matrix Spike
MS Result
Parameter
Max
RPD
MS
%Rec
MSD
Result
MSD
Spike
Conc.
MS Spike
Conc.ResultUnits
%Rec
Limits
0.315 1210.261< 0.00345µg/L1,2-Dibromoethane 70-130
Page 7 of 7Date:01/19/2023 05:30 PM
Page 20 of 22