MO-6015_23108_G_WSW_20230703_PAYNEHREREQ

July 3 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: 23108 Enclosed please find the analytical results for water samples collected on March 5, 2023 from the Payne water supply well, identified as WS 6 (Before) and WS-6 (after), located at 120 Alexis-Lucia 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

Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
ARM Environmental Services, Inc.
WS-6 (Before)
YE08015-003
05/05/2023 1158
05/08/2023
Aqueous
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 05/18/2023 0244 CDA 75593
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run
Acetone 67-64-1 SM 6200B-2011 ND 1ug/L10
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.50
2-Butanone (MEK)78-93-3 SM 6200B-2011 ND 1ug/L10
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.50
2-Hexanone 591-78-6 SM 6200B-2011 ND 1ug/L10
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 2.0 1ug/L0.50
4-Methyl-2-pentanone 108-10-1 SM 6200B-2011 ND 1ug/L10
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the LOQ N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failureW = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 11 of 28
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
ARM Environmental Services, Inc.
WS-6 (Before)
YE08015-003
05/05/2023 1158
05/08/2023
Aqueous
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 05/18/2023 0244 CDA 75593
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run
Methylene chloride 75-09-2 SM 6200B-2011 0.50 1ug/L0.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.50
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L0.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L0.50
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L0.50
Toluene 108-88-3 SM 6200B-2011 ND 1ug/L0.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L0.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L0.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L0.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L0.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L0.50
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L0.50
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L0.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L0.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 ND 1ug/L0.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 ND 1ug/L0.50
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L0.50
m+p - Xylenes 179601-23-1 SM 6200B-2011 ND 1ug/L0.50
o - Xylenes 95-47-6 SM 6200B-2011 ND 1ug/L0.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 110 70-130
Bromofluorobenzene 86 70-130
Toluene-d8 99 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the LOQ N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failureW = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 12 of 28
EDB & DBCP by Microextraction
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
ARM Environmental Services, Inc.
WS-6 (Before)
YE08015-003
05/05/2023 1158
05/08/2023
Aqueous
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 504.1 504.1 1 05/12/2023 1543 MEZ 05/12/2023 1038 75138
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run
1,2-Dibromoethane (EDB)106-93-4 504.1 ND 1ug/L0.0097
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,1,1,2-Tetrachloroethane 84 57-137
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the LOQ N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failureW = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 13 of 28
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
ARM Environmental Services, Inc.
WS-6 (After)
YE08015-004
05/05/2023 1211
05/08/2023
Aqueous
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 05/18/2023 0307 CDA 75593
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run
Acetone 67-64-1 SM 6200B-2011 ND 1ug/L10
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.50
2-Butanone (MEK)78-93-3 SM 6200B-2011 ND 1ug/L10
n-Butylbenzene 104-51-8 SM 6200B-2011 ND 1ug/L0.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 ND 1ug/L0.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.50
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.50
Ethylbenzene 100-41-4 SM 6200B-2011 ND 1ug/L0.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.50
2-Hexanone 591-78-6 SM 6200B-2011 ND 1ug/L10
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 ND 1ug/L0.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 ND 1ug/L0.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 2.1 1ug/L0.50
4-Methyl-2-pentanone 108-10-1 SM 6200B-2011 ND 1ug/L10
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the LOQ N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failureW = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 14 of 28
Volatile Organic Compounds by GC/MS
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
ARM Environmental Services, Inc.
WS-6 (After)
YE08015-004
05/05/2023 1211
05/08/2023
Aqueous
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 05/18/2023 0307 CDA 75593
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.50
Naphthalene 91-20-3 SM 6200B-2011 ND 1ug/L0.50
n-Propylbenzene 103-65-1 SM 6200B-2011 ND 1ug/L0.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.50
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L0.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L0.50
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L0.50
Toluene 108-88-3 SM 6200B-2011 ND 1ug/L0.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L0.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L0.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L0.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L0.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L0.50
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L0.50
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L0.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L0.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 ND 1ug/L0.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 ND 1ug/L0.50
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L0.50
m+p - Xylenes 179601-23-1 SM 6200B-2011 ND 1ug/L0.50
o - Xylenes 95-47-6 SM 6200B-2011 ND 1ug/L0.50
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,2-Dichloroethane-d4 111 70-130
Bromofluorobenzene 86 70-130
Toluene-d8 97 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the LOQ N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failureW = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 15 of 28
EDB & DBCP by Microextraction
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
ARM Environmental Services, Inc.
WS-6 (After)
YE08015-004
05/05/2023 1211
05/08/2023
Aqueous
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 504.1 504.1 1 05/12/2023 1555 MEZ 05/12/2023 1038 75138
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run
1,2-Dibromoethane (EDB)106-93-4 504.1 ND 1ug/L0.0099
AcceptanceRun 1
Surrogate Q % Recovery Limits
1,1,1,2-Tetrachloroethane 78 57-137
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the LOQ N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failureW = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 16 of 28