MO-6015_23108_G_WSW_20230314_PAYNEHREREQ

March 14, 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 February 23, 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

QC Summary
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:YQ67751-001
67751 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ Units Analysis DateDil
Acetone ND 02/16/2023 133310ug/L1
Benzene ND 02/16/2023 13330.50 ug/L1
Bromobenzene ND 02/16/2023 13330.50 ug/L1
Bromochloromethane ND 02/16/2023 13330.50 ug/L1
Bromodichloromethane ND 02/16/2023 13330.50 ug/L1
Bromoform ND 02/16/2023 13330.50 ug/L1
Bromomethane (Methyl bromide)ND 02/16/2023 13330.50 ug/L1
2-Butanone (MEK)ND 02/16/2023 133310ug/L1
n-Butylbenzene ND 02/16/2023 13330.50 ug/L1
sec-Butylbenzene ND 02/16/2023 13330.50 ug/L1
tert-Butylbenzene ND 02/16/2023 13330.50 ug/L1
Carbon tetrachloride ND 02/16/2023 13330.50 ug/L1
Chlorobenzene ND 02/16/2023 13330.50 ug/L1
Chloroethane ND 02/16/2023 13330.50 ug/L1
Chloroform ND 02/16/2023 13330.50 ug/L1
2-Chlorotoluene ND 02/16/2023 13330.50 ug/L1
4-Chlorotoluene ND 02/16/2023 13330.50 ug/L1
Dibromochloromethane ND 02/16/2023 13330.50 ug/L1
1,2-Dibromoethane (EDB)ND 02/16/2023 13330.50 ug/L1
Dibromomethane (Methylene bromide)ND 02/16/2023 13330.50 ug/L1
1,2-Dichlorobenzene ND 02/16/2023 13330.50 ug/L1
1,3-Dichlorobenzene ND 02/16/2023 13330.50 ug/L1
1,4-Dichlorobenzene ND 02/16/2023 13330.50 ug/L1
1,1-Dichloroethane ND 02/16/2023 13330.50 ug/L1
1,2-Dichloroethane ND 02/16/2023 13330.50 ug/L1
1,1-Dichloroethene ND 02/16/2023 13330.50 ug/L1
cis-1,2-Dichloroethene ND 02/16/2023 13330.50 ug/L1
trans-1,2-Dichloroethene ND 02/16/2023 13330.50 ug/L1
1,2-Dichloropropane ND 02/16/2023 13330.50 ug/L1
1,3-Dichloropropane ND 02/16/2023 13330.50 ug/L1
2,2-Dichloropropane ND 02/16/2023 13330.50 ug/L1
1,1-Dichloropropene ND 02/16/2023 13330.50 ug/L1
cis-1,3-Dichloropropene ND 02/16/2023 13330.50 ug/L1
trans-1,3-Dichloropropene ND 02/16/2023 13330.50 ug/L1
Diisopropyl ether (IPE)ND 02/16/2023 13330.50 ug/L1
Ethylbenzene ND 02/16/2023 13330.50 ug/L1
Hexachlorobutadiene ND 02/16/2023 13330.50 ug/L1
2-Hexanone ND 02/16/2023 133310ug/L1
Isopropylbenzene (Cumene)ND 02/16/2023 13330.50 ug/L1
p-Isopropyltoluene (p-Cymene)ND 02/16/2023 13330.50 ug/L1
Methyl tertiary butyl ether (MTBE)ND 02/16/2023 13330.50 ug/L1
4-Methyl-2-pentanone ND 02/16/2023 133310ug/L1
Methylene chloride ND 02/16/2023 13330.50 ug/L1
Naphthalene ND 02/16/2023 13330.50 ug/L1
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:YQ67751-001
67751 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ Units Analysis DateDil
n-Propylbenzene ND 02/16/2023 13330.50 ug/L1
Styrene ND 02/16/2023 13330.50 ug/L1
1,1,1,2-Tetrachloroethane ND 02/16/2023 13330.50 ug/L1
1,1,2,2-Tetrachloroethane ND 02/16/2023 13330.50 ug/L1
Tetrachloroethene ND 02/16/2023 13330.50 ug/L1
Toluene ND 02/16/2023 13330.50 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 02/16/2023 13330.50 ug/L1
1,2,3-Trichlorobenzene ND 02/16/2023 13330.50 ug/L1
1,2,4-Trichlorobenzene ND 02/16/2023 13330.50 ug/L1
1,1,1-Trichloroethane ND 02/16/2023 13330.50 ug/L1
1,1,2-Trichloroethane ND 02/16/2023 13330.50 ug/L1
Trichloroethene ND 02/16/2023 13330.50 ug/L1
Trichlorofluoromethane ND 02/16/2023 13330.50 ug/L1
1,2,3-Trichloropropane ND 02/16/2023 13330.50 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 02/16/2023 13330.50 ug/L1
1,2,4-Trimethylbenzene ND 02/16/2023 13330.50 ug/L1
m+p - Xylenes ND 02/16/2023 13330.50 ug/L1
o - Xylenes ND 02/16/2023 13330.50 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 96 70-130
Bromofluorobenzene 99 70-130
Toluene-d8 104 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:YQ67751-002
67751 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Acetone 89 02/16/2023 10018910070-1301
Benzene 45 02/16/2023 1001895070-1301
Bromobenzene 47 02/16/2023 1001955070-1301
Bromochloromethane 49 02/16/2023 1001975070-1301
Bromodichloromethane 45 02/16/2023 1001915070-1301
Bromoform 47 02/16/2023 1001945070-1301
Bromomethane (Methyl bromide)63 02/16/2023 10011255060-1401
2-Butanone (MEK)94 02/16/2023 10019410070-1301
n-Butylbenzene 50 02/16/2023 10011015070-1301
sec-Butylbenzene 52 02/16/2023 10011045070-1301
tert-Butylbenzene 52 02/16/2023 10011045070-1301
Carbon tetrachloride 46 02/16/2023 1001935070-1301
Chlorobenzene 46 02/16/2023 1001925070-1301
Chloroethane 59 02/16/2023 10011195060-1401
Chloroform 42 02/16/2023 1001845070-1301
2-Chlorotoluene 47 02/16/2023 1001945070-1301
4-Chlorotoluene 48 02/16/2023 1001975070-1301
Dibromochloromethane 47 02/16/2023 1001935070-1301
1,2-Dibromoethane (EDB)47 02/16/2023 1001955070-1301
Dibromomethane (Methylene bromide)46 02/16/2023 1001935070-1301
1,2-Dichlorobenzene 46 02/16/2023 1001915070-1301
1,3-Dichlorobenzene 45 02/16/2023 1001915070-1301
1,4-Dichlorobenzene 44 02/16/2023 1001875070-1301
1,1-Dichloroethane 44 02/16/2023 1001885070-1301
1,2-Dichloroethane 46 02/16/2023 1001925070-1301
1,1-Dichloroethene 46 02/16/2023 1001925070-1301
cis-1,2-Dichloroethene 46 02/16/2023 1001915070-1301
trans-1,2-Dichloroethene 45 02/16/2023 1001905070-1301
1,2-Dichloropropane 44 02/16/2023 1001895070-1301
1,3-Dichloropropane 46 02/16/2023 1001915070-1301
2,2-Dichloropropane 49 02/16/2023 1001985070-1301
1,1-Dichloropropene 45 02/16/2023 1001905070-1301
cis-1,3-Dichloropropene 50 02/16/2023 10011015070-1301
trans-1,3-Dichloropropene 43 02/16/2023 1001865070-1301
Diisopropyl ether (IPE)49 02/16/2023 1001985070-1301
Ethylbenzene 49 02/16/2023 1001975070-1301
Hexachlorobutadiene 47 02/16/2023 1001935070-1301
2-Hexanone 87 02/16/2023 10018710070-1301
Isopropylbenzene (Cumene)51 02/16/2023 10011015070-1301
p-Isopropyltoluene (p-Cymene)52 02/16/2023 10011045070-1301
Methyl tertiary butyl ether (MTBE)47 02/16/2023 1001955070-1301
4-Methyl-2-pentanone 95 02/16/2023 10019510070-1301
Methylene chloride 43 02/16/2023 1001865070-1301
Naphthalene 55 02/16/2023 10011105070-1301
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:YQ67751-002
67751 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
n-Propylbenzene 51 02/16/2023 10011015070-1301
Styrene 46 02/16/2023 1001935070-1301
1,1,1,2-Tetrachloroethane 46 02/16/2023 1001925070-1301
1,1,2,2-Tetrachloroethane 45 02/16/2023 1001905070-1301
Tetrachloroethene 47 02/16/2023 1001945070-1301
Toluene 46 02/16/2023 1001935070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 46 02/16/2023 1001925070-1301
1,2,3-Trichlorobenzene 48 02/16/2023 1001955070-1301
1,2,4-Trichlorobenzene 49 02/16/2023 1001985070-1301
1,1,1-Trichloroethane 45 02/16/2023 1001905070-1301
1,1,2-Trichloroethane 46 02/16/2023 1001915070-1301
Trichloroethene 46 02/16/2023 1001925070-1301
Trichlorofluoromethane 60 02/16/2023 10011205060-1401
1,2,3-Trichloropropane 48 02/16/2023 1001965070-1301
1,3,5-Trimethylbenzene (Mesitylene)53 02/16/2023 10011055070-1301
1,2,4-Trimethylbenzene 52 02/16/2023 10011045070-1301
m+p - Xylenes 51 02/16/2023 10011015070-1301
o - Xylenes 50 02/16/2023 1001995070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 86 70-130
Bromofluorobenzene 95 70-130
Toluene-d8 94 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:YQ67929-001
67929 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ Units Analysis DateDil
Acetone ND 02/18/2023 202010ug/L1
Benzene ND 02/18/2023 20200.50 ug/L1
Bromobenzene ND 02/18/2023 20200.50 ug/L1
Bromochloromethane ND 02/18/2023 20200.50 ug/L1
Bromodichloromethane ND 02/18/2023 20200.50 ug/L1
Bromoform ND 02/18/2023 20200.50 ug/L1
Bromomethane (Methyl bromide)ND 02/18/2023 20200.50 ug/L1
2-Butanone (MEK)ND 02/18/2023 202010ug/L1
n-Butylbenzene ND 02/18/2023 20200.50 ug/L1
sec-Butylbenzene ND 02/18/2023 20200.50 ug/L1
tert-Butylbenzene ND 02/18/2023 20200.50 ug/L1
Carbon tetrachloride ND 02/18/2023 20200.50 ug/L1
Chlorobenzene ND 02/18/2023 20200.50 ug/L1
Chloroethane ND 02/18/2023 20200.50 ug/L1
Chloroform ND 02/18/2023 20200.50 ug/L1
2-Chlorotoluene ND 02/18/2023 20200.50 ug/L1
4-Chlorotoluene ND 02/18/2023 20200.50 ug/L1
Dibromochloromethane ND 02/18/2023 20200.50 ug/L1
1,2-Dibromoethane (EDB)ND 02/18/2023 20200.50 ug/L1
Dibromomethane (Methylene bromide)ND 02/18/2023 20200.50 ug/L1
1,2-Dichlorobenzene ND 02/18/2023 20200.50 ug/L1
1,3-Dichlorobenzene ND 02/18/2023 20200.50 ug/L1
1,4-Dichlorobenzene ND 02/18/2023 20200.50 ug/L1
1,1-Dichloroethane ND 02/18/2023 20200.50 ug/L1
1,2-Dichloroethane ND 02/18/2023 20200.50 ug/L1
1,1-Dichloroethene ND 02/18/2023 20200.50 ug/L1
cis-1,2-Dichloroethene ND 02/18/2023 20200.50 ug/L1
trans-1,2-Dichloroethene ND 02/18/2023 20200.50 ug/L1
1,2-Dichloropropane ND 02/18/2023 20200.50 ug/L1
1,3-Dichloropropane ND 02/18/2023 20200.50 ug/L1
2,2-Dichloropropane ND 02/18/2023 20200.50 ug/L1
1,1-Dichloropropene ND 02/18/2023 20200.50 ug/L1
cis-1,3-Dichloropropene ND 02/18/2023 20200.50 ug/L1
trans-1,3-Dichloropropene ND 02/18/2023 20200.50 ug/L1
Diisopropyl ether (IPE)ND 02/18/2023 20200.50 ug/L1
Ethylbenzene ND 02/18/2023 20200.50 ug/L1
Hexachlorobutadiene ND 02/18/2023 20200.50 ug/L1
2-Hexanone ND 02/18/2023 202010ug/L1
Isopropylbenzene (Cumene)ND 02/18/2023 20200.50 ug/L1
p-Isopropyltoluene (p-Cymene)ND 02/18/2023 20200.50 ug/L1
Methyl tertiary butyl ether (MTBE)ND 02/18/2023 20200.50 ug/L1
4-Methyl-2-pentanone ND 02/18/2023 202010ug/L1
Methylene chloride ND 02/18/2023 20200.50 ug/L1
Naphthalene ND 02/18/2023 20200.50 ug/L1
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:YQ67929-001
67929 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ Units Analysis DateDil
n-Propylbenzene ND 02/18/2023 20200.50 ug/L1
Styrene ND 02/18/2023 20200.50 ug/L1
1,1,1,2-Tetrachloroethane ND 02/18/2023 20200.50 ug/L1
1,1,2,2-Tetrachloroethane ND 02/18/2023 20200.50 ug/L1
Tetrachloroethene ND 02/18/2023 20200.50 ug/L1
Toluene ND 02/18/2023 20200.50 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 02/18/2023 20200.50 ug/L1
1,2,3-Trichlorobenzene ND 02/18/2023 20200.50 ug/L1
1,2,4-Trichlorobenzene ND 02/18/2023 20200.50 ug/L1
1,1,1-Trichloroethane ND 02/18/2023 20200.50 ug/L1
1,1,2-Trichloroethane ND 02/18/2023 20200.50 ug/L1
Trichloroethene ND 02/18/2023 20200.50 ug/L1
Trichlorofluoromethane ND 02/18/2023 20200.50 ug/L1
1,2,3-Trichloropropane ND 02/18/2023 20200.50 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 02/18/2023 20200.50 ug/L1
1,2,4-Trimethylbenzene ND 02/18/2023 20200.50 ug/L1
m+p - Xylenes ND 02/18/2023 20200.50 ug/L1
o - Xylenes ND 02/18/2023 20200.50 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 103 70-130
Bromofluorobenzene 104 70-130
Toluene-d8 105 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:YQ67929-002
67929 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Acetone 82 02/18/2023 18518210070-1301
Benzene 46 02/18/2023 1851935070-1301
Bromobenzene 49 02/18/2023 1851975070-1301
Bromochloromethane 45 02/18/2023 1851915070-1301
Bromodichloromethane 45 02/18/2023 1851915070-1301
Bromoform 46 02/18/2023 1851925070-1301
Bromomethane (Methyl bromide)62 02/18/2023 18511245060-1401
2-Butanone (MEK)95 02/18/2023 18519510070-1301
n-Butylbenzene 50 02/18/2023 18511005070-1301
sec-Butylbenzene 53 02/18/2023 18511065070-1301
tert-Butylbenzene 54 02/18/2023 18511085070-1301
Carbon tetrachloride 48 02/18/2023 1851965070-1301
Chlorobenzene 46 02/18/2023 1851915070-1301
Chloroethane 66 02/18/2023 18511325060-1401
Chloroform 43 02/18/2023 1851875070-1301
2-Chlorotoluene 49 02/18/2023 1851985070-1301
4-Chlorotoluene 49 02/18/2023 1851985070-1301
Dibromochloromethane 47 02/18/2023 1851945070-1301
1,2-Dibromoethane (EDB)46 02/18/2023 1851925070-1301
Dibromomethane (Methylene bromide)45 02/18/2023 1851905070-1301
1,2-Dichlorobenzene 48 02/18/2023 1851955070-1301
1,3-Dichlorobenzene 47 02/18/2023 1851945070-1301
1,4-Dichlorobenzene 45 02/18/2023 1851915070-1301
1,1-Dichloroethane 44 02/18/2023 1851895070-1301
1,2-Dichloroethane 45 02/18/2023 1851905070-1301
1,1-Dichloroethene 51 02/18/2023 18511015070-1301
cis-1,2-Dichloroethene 46 02/18/2023 1851915070-1301
trans-1,2-Dichloroethene 48 02/18/2023 1851975070-1301
1,2-Dichloropropane 45 02/18/2023 1851895070-1301
1,3-Dichloropropane 46 02/18/2023 1851915070-1301
2,2-Dichloropropane 60 02/18/2023 18511215070-1301
1,1-Dichloropropene 47 02/18/2023 1851945070-1301
cis-1,3-Dichloropropene 48 02/18/2023 1851965070-1301
trans-1,3-Dichloropropene 48 02/18/2023 1851975070-1301
Diisopropyl ether (IPE)48 02/18/2023 1851955070-1301
Ethylbenzene 47 02/18/2023 1851955070-1301
Hexachlorobutadiene 47 02/18/2023 1851945070-1301
2-Hexanone 87 02/18/2023 18518710070-1301
Isopropylbenzene (Cumene)51 02/18/2023 18511025070-1301
p-Isopropyltoluene (p-Cymene)53 02/18/2023 18511065070-1301
Methyl tertiary butyl ether (MTBE)51 02/18/2023 18511015070-1301
4-Methyl-2-pentanone 100 02/18/2023 185110010070-1301
Methylene chloride 45 02/18/2023 1851905070-1301
Naphthalene 53 02/18/2023 18511065070-1301
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:YQ67929-002
67929 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
n-Propylbenzene 51 02/18/2023 18511025070-1301
Styrene 50 02/18/2023 18511005070-1301
1,1,1,2-Tetrachloroethane 49 02/18/2023 1851985070-1301
1,1,2,2-Tetrachloroethane 48 02/18/2023 1851965070-1301
Tetrachloroethene 47 02/18/2023 1851945070-1301
Toluene 48 02/18/2023 1851965070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 51 02/18/2023 18511025070-1301
1,2,3-Trichlorobenzene 50 02/18/2023 1851995070-1301
1,2,4-Trichlorobenzene 48 02/18/2023 1851965070-1301
1,1,1-Trichloroethane 48 02/18/2023 1851965070-1301
1,1,2-Trichloroethane 46 02/18/2023 1851915070-1301
Trichloroethene 47 02/18/2023 1851935070-1301
Trichlorofluoromethane 57 02/18/2023 18511145060-1401
1,2,3-Trichloropropane 50 02/18/2023 1851995070-1301
1,3,5-Trimethylbenzene (Mesitylene)54 02/18/2023 18511075070-1301
1,2,4-Trimethylbenzene 53 02/18/2023 18511075070-1301
m+p - Xylenes 48 02/18/2023 1851975070-1301
o - Xylenes 49 02/18/2023 1851995070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 89 70-130
Bromofluorobenzene 96 70-130
Toluene-d8 95 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:YQ67950-001
67950 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ Units Analysis DateDil
Chloromethane (Methyl chloride)ND 02/19/2023 19480.50 ug/L1
Dichlorodifluoromethane ND 02/19/2023 19480.50 ug/L1
Vinyl chloride ND 02/19/2023 19480.50 ug/L1
Surrogate Q % Rec
Acceptance
Limit
1,2-Dichloroethane-d4 111 70-130
Bromofluorobenzene 104 70-130
Toluene-d8 108 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:YQ67950-002
67950 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Chloromethane (Methyl chloride)58 02/19/2023 18441155060-1401
Dichlorodifluoromethane 60 02/19/2023 18441205060-1401
Vinyl chloride 54 02/19/2023 18441085060-1401
Surrogate Q % Rec
Acceptance
Limit
1,2-Dichloroethane-d4 95 70-130
Bromofluorobenzene 102 70-130
Toluene-d8 102 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:YQ68047-001
68047 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ Units Analysis DateDil
Benzene ND 02/20/2023 21170.50 ug/L1
Bromobenzene ND 02/20/2023 21170.50 ug/L1
Bromochloromethane ND 02/20/2023 21170.50 ug/L1
Bromodichloromethane ND 02/20/2023 21170.50 ug/L1
Bromoform ND 02/20/2023 21170.50 ug/L1
Bromomethane (Methyl bromide)ND 02/20/2023 21170.50 ug/L1
2-Butanone (MEK)ND 02/20/2023 211710ug/L1
n-Butylbenzene ND 02/20/2023 21170.50 ug/L1
sec-Butylbenzene ND 02/20/2023 21170.50 ug/L1
tert-Butylbenzene ND 02/20/2023 21170.50 ug/L1
Carbon tetrachloride ND 02/20/2023 21170.50 ug/L1
Chlorobenzene ND 02/20/2023 21170.50 ug/L1
Chloroethane ND 02/20/2023 21170.50 ug/L1
Chloroform ND 02/20/2023 21170.50 ug/L1
2-Chlorotoluene ND 02/20/2023 21170.50 ug/L1
4-Chlorotoluene ND 02/20/2023 21170.50 ug/L1
Dibromochloromethane ND 02/20/2023 21170.50 ug/L1
1,2-Dibromoethane (EDB)ND 02/20/2023 21170.50 ug/L1
Dibromomethane (Methylene bromide)ND 02/20/2023 21170.50 ug/L1
1,2-Dichlorobenzene ND 02/20/2023 21170.50 ug/L1
1,3-Dichlorobenzene ND 02/20/2023 21170.50 ug/L1
1,4-Dichlorobenzene ND 02/20/2023 21170.50 ug/L1
1,1-Dichloroethane ND 02/20/2023 21170.50 ug/L1
1,2-Dichloroethane ND 02/20/2023 21170.50 ug/L1
1,1-Dichloroethene ND 02/20/2023 21170.50 ug/L1
cis-1,2-Dichloroethene ND 02/20/2023 21170.50 ug/L1
trans-1,2-Dichloroethene ND 02/20/2023 21170.50 ug/L1
1,2-Dichloropropane ND 02/20/2023 21170.50 ug/L1
1,3-Dichloropropane ND 02/20/2023 21170.50 ug/L1
2,2-Dichloropropane ND 02/20/2023 21170.50 ug/L1
1,1-Dichloropropene ND 02/20/2023 21170.50 ug/L1
cis-1,3-Dichloropropene ND 02/20/2023 21170.50 ug/L1
trans-1,3-Dichloropropene ND 02/20/2023 21170.50 ug/L1
Diisopropyl ether (IPE)ND 02/20/2023 21170.50 ug/L1
Ethylbenzene ND 02/20/2023 21170.50 ug/L1
Hexachlorobutadiene ND 02/20/2023 21170.50 ug/L1
2-Hexanone ND 02/20/2023 211710ug/L1
Isopropylbenzene (Cumene)ND 02/20/2023 21170.50 ug/L1
p-Isopropyltoluene (p-Cymene)ND 02/20/2023 21170.50 ug/L1
Methyl tertiary butyl ether (MTBE)ND 02/20/2023 21170.50 ug/L1
4-Methyl-2-pentanone ND 02/20/2023 211710ug/L1
Methylene chloride ND 02/20/2023 21170.50 ug/L1
Naphthalene ND 02/20/2023 21170.50 ug/L1
n-Propylbenzene ND 02/20/2023 21170.50 ug/L1
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:YQ68047-001
68047 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ Units Analysis DateDil
Styrene ND 02/20/2023 21170.50 ug/L1
1,1,1,2-Tetrachloroethane ND 02/20/2023 21170.50 ug/L1
1,1,2,2-Tetrachloroethane ND 02/20/2023 21170.50 ug/L1
Tetrachloroethene ND 02/20/2023 21170.50 ug/L1
Toluene ND 02/20/2023 21170.50 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 02/20/2023 21170.50 ug/L1
1,2,3-Trichlorobenzene ND 02/20/2023 21170.50 ug/L1
1,2,4-Trichlorobenzene ND 02/20/2023 21170.50 ug/L1
1,1,1-Trichloroethane ND 02/20/2023 21170.50 ug/L1
1,1,2-Trichloroethane ND 02/20/2023 21170.50 ug/L1
Trichloroethene ND 02/20/2023 21170.50 ug/L1
Trichlorofluoromethane ND 02/20/2023 21170.50 ug/L1
1,2,3-Trichloropropane ND 02/20/2023 21170.50 ug/L1
1,3,5-Trimethylbenzene (Mesitylene)ND 02/20/2023 21170.50 ug/L1
1,2,4-Trimethylbenzene ND 02/20/2023 21170.50 ug/L1
Vinyl chloride ND 02/20/2023 21170.50 ug/L1
m+p - Xylenes ND 02/20/2023 21170.50 ug/L1
o - Xylenes ND 02/20/2023 21170.50 ug/L1
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 95 70-130
Bromofluorobenzene 101 70-130
Toluene-d8 104 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:YQ68047-002
68047 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Benzene 48 02/20/2023 1809975070-1301
Bromobenzene 53 02/20/2023 18091055070-1301
Bromochloromethane 49 02/20/2023 1809985070-1301
Bromodichloromethane 48 02/20/2023 1809965070-1301
Bromoform 47 02/20/2023 1809945070-1301
Bromomethane (Methyl bromide)55 02/20/2023 18091095060-1401
2-Butanone (MEK)120 02/20/2023 180911910070-1301
n-Butylbenzene 57 02/20/2023 18091155070-1301
sec-Butylbenzene 59 02/20/2023 18091175070-1301
tert-Butylbenzene 59 02/20/2023 18091185070-1301
Carbon tetrachloride 48 02/20/2023 1809965070-1301
Chlorobenzene 50 02/20/2023 1809995070-1301
Chloroethane 58 02/20/2023 18091165060-1401
Chloroform 44 02/20/2023 1809885070-1301
2-Chlorotoluene 53 02/20/2023 18091065070-1301
4-Chlorotoluene 53 02/20/2023 18091075070-1301
Dibromochloromethane 50 02/20/2023 1809995070-1301
1,2-Dibromoethane (EDB)52 02/20/2023 18091035070-1301
Dibromomethane (Methylene bromide)50 02/20/2023 1809995070-1301
1,2-Dichlorobenzene 50 02/20/2023 1809995070-1301
1,3-Dichlorobenzene 50 02/20/2023 18091005070-1301
1,4-Dichlorobenzene 48 02/20/2023 1809965070-1301
1,1-Dichloroethane 47 02/20/2023 1809945070-1301
1,2-Dichloroethane 50 02/20/2023 1809995070-1301
1,1-Dichloroethene 51 02/20/2023 18091025070-1301
cis-1,2-Dichloroethene 47 02/20/2023 1809955070-1301
trans-1,2-Dichloroethene 47 02/20/2023 1809955070-1301
1,2-Dichloropropane 48 02/20/2023 1809975070-1301
1,3-Dichloropropane 51 02/20/2023 18091035070-1301
2,2-Dichloropropane 55 02/20/2023 18091105070-1301
1,1-Dichloropropene 49 02/20/2023 1809985070-1301
cis-1,3-Dichloropropene 53 02/20/2023 18091065070-1301
trans-1,3-Dichloropropene 48 02/20/2023 1809965070-1301
Diisopropyl ether (IPE)48 02/20/2023 1809965070-1301
Ethylbenzene 53 02/20/2023 18091055070-1301
Hexachlorobutadiene 58 02/20/2023 18091155070-1301
2-Hexanone 98 02/20/2023 18099810070-1301
Isopropylbenzene (Cumene)55 02/20/2023 18091105070-1301
p-Isopropyltoluene (p-Cymene)58 02/20/2023 18091175070-1301
Methyl tertiary butyl ether (MTBE)49 02/20/2023 1809985070-1301
4-Methyl-2-pentanone 100 02/20/2023 180910210070-1301
Methylene chloride 45 02/20/2023 1809915070-1301
Naphthalene 62 02/20/2023 18091235070-1301
n-Propylbenzene 56 02/20/2023 18091135070-1301
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:YQ68047-002
68047 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Styrene 50 02/20/2023 18091005070-1301
1,1,1,2-Tetrachloroethane 50 02/20/2023 1809995070-1301
1,1,2,2-Tetrachloroethane 51 02/20/2023 18091015070-1301
Tetrachloroethene 51 02/20/2023 18091015070-1301
Toluene 53 02/20/2023 18091055070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 52 02/20/2023 18091045070-1301
1,2,3-Trichlorobenzene 53 02/20/2023 18091065070-1301
1,2,4-Trichlorobenzene 54 02/20/2023 18091095070-1301
1,1,1-Trichloroethane 48 02/20/2023 1809965070-1301
1,1,2-Trichloroethane 49 02/20/2023 1809995070-1301
Trichloroethene 49 02/20/2023 1809985070-1301
Trichlorofluoromethane 60 02/20/2023 18091215060-1401
1,2,3-Trichloropropane 53 02/20/2023 18091075070-1301
1,3,5-Trimethylbenzene (Mesitylene)59 02/20/2023 18091185070-1301
1,2,4-Trimethylbenzene 58 02/20/2023 18091175070-1301
Vinyl chloride 67 02/20/2023 18091345060-1401
m+p - Xylenes 55 02/20/2023 18091095070-1301
o - Xylenes 55 02/20/2023 18091095070-1301
Surrogate Q % Rec Acceptance
Limit
1,2-Dichloroethane-d4 89 70-130
Bromofluorobenzene 101 70-130
Toluene-d8 100 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:YQ68168-001
68168 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ Units Analysis DateDil
Chloromethane (Methyl chloride)ND 02/22/2023 01200.50 ug/L1
Dichlorodifluoromethane ND 02/22/2023 01200.50 ug/L1
Vinyl chloride ND 02/22/2023 01200.50 ug/L1
Surrogate Q % Rec
Acceptance
Limit
1,2-Dichloroethane-d4 102 70-130
Bromofluorobenzene 94 70-130
Toluene-d8 106 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:YQ68168-002
68168 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Chloromethane (Methyl chloride)57 02/21/2023 21271145060-1401
Dichlorodifluoromethane 59 02/21/2023 21271185060-1401
Vinyl chloride 57 02/21/2023 21271145060-1401
Surrogate Q % Rec
Acceptance
Limit
1,2-Dichloroethane-d4 93 70-130
Bromofluorobenzene 92 70-130
Toluene-d8 101 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - LCSD
Batch:Prep Method:
Sample ID:YQ68168-003
68168 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date% RPD
%Rec
Limit
% RPD
LimitDil(ug/L)(ug/L)
Chloromethane (Methyl chloride)57 02/21/2023 23431145060-1400.58 201
Dichlorodifluoromethane 60 02/21/2023 23431215060-1402.5 201
Vinyl chloride 58 02/21/2023 23431165060-1402.2 201
Surrogate Q % Rec
Acceptance
Limit
1,2-Dichloroethane-d4 95 70-130
Bromofluorobenzene 95 70-130
Toluene-d8 102 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:YQ68276-001
68276 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ Units Analysis DateDil
Acetone ND 02/22/2023 204410ug/L1
Chloromethane (Methyl chloride)ND 02/22/2023 20440.50 ug/L1
Dichlorodifluoromethane ND 02/22/2023 20440.50 ug/L1
Surrogate Q % Rec
Acceptance
Limit
1,2-Dichloroethane-d4 97 70-130
Bromofluorobenzene 97 70-130
Toluene-d8 97 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:YQ68276-002
68276 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Acetone 110 02/22/2023 193610610070-1301
Chloromethane (Methyl chloride)46 02/22/2023 1936935060-1401
Dichlorodifluoromethane 51 02/22/2023 19361025060-1401
Surrogate Q % Rec
Acceptance
Limit
1,2-Dichloroethane-d4 90 70-130
Bromofluorobenzene 101 70-130
Toluene-d8 96 70-130
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

EDB & DBCP by Microextraction - MB
Batch:Prep Method:
Prep Date:
Sample ID:YQ67586-001
67586 504.1
02/15/2023 1120Analytical Method:504.1
Matrix:Aqueous
Parameter Result Q LOQ Units Analysis DateDil
1,2-Dibromoethane (EDB)ND 02/16/2023 09490.010 ug/L1
Surrogate Q % Rec
Acceptance
Limit
1,1,1,2-Tetrachloroethane 75 57-137
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

EDB & DBCP by Microextraction - LCS
Batch:Prep Method:
Prep Date:
Sample ID:YQ67586-002
67586 504.1
02/15/2023 1120Analytical Method:504.1
Matrix:Aqueous
Parameter
Result
Q % Rec
Spike
Amount
Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
1,2-Dibromoethane (EDB)0.26 02/16/2023 10011050.25 70-1301
Surrogate Q % Rec
Acceptance
Limit
1,1,1,2-Tetrachloroethane 78 57-137
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

EDB & DBCP by Microextraction - Duplicate
Batch:Prep Method:
Prep Date:
Sample ID:YB09078-002DU
67586 504.1
02/15/2023 1120Analytical Method:504.1
Matrix:Aqueous
Parameter
Result
Q Analysis Date% RPD
%RPD
Limit
Sample
Amount
Dil(ug/L)(ug/L)
1,2-Dibromoethane (EDB)ND 02/16/2023 11370.00 20ND1
Surrogate Q % Rec
Acceptance
Limit
1,1,1,2-Tetrachloroethane N 147 57-137
Note:Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the LOQ N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)