WS-5520_19240_CA_WSW_20220624

June 24, 2022 Darryll Younts 713 Ira Drive
Colfax, NC 27235
RE: Supply Well Sampling Results Former Colfax Service Station/Colfax Oil Company 9422 and 9420 W. Market Street Colfax, Guilford County, North Carolina (WSRO) STF Incident #19240 (Colfax Service Station) and #20028 (Colfax Oil Company)
Risk/Rank: High H570D/H410D Dear Mr. Younts:

The Winston Salem Regional Office (WSRO) referred the referenced sites to the State’s Underground Storage Tank (UST) Trust Fund Branch, State-Lead Cleanup Program. Eleven USTs were operated on the sites. Seven USTs were associated with the former Colfax Service Station, and four USTs plus two 10,000-gallon above-ground storage tanks were associated with the Colfax Oil Company bulk plant. Soil contamination was
discovered during tank removal activities in 1999 and 2004, and groundwater contamination has been
documented from both releases. The Responsible Party, Hardin Oil Company, Inc, has been dissolved. Due to the presence of groundwater users within 1,500 feet and the confirmation of contamination remaining at the site, the subject property was accepted for inclusion on the list of sites awaiting State-Lead cleanup, and we have initiated our assessment. On June 13, 2022, Withers Ravenel personnel sampled your water supply well on behalf of the NC Department
of Environmental Quality. The water sample was analyzed for Volatile Organic Compounds, which include a wide range of man-made compounds including, but not limited to, gasoline components. No targeted compounds were detected in your supply well, and a copy of the lab results are enclosed for your review.
If you have any questions, please contact me at [phone] or [e-mail].
Thank you,
Sharon Ghiold, Hydrogeologist
Division of Waste Management, NCDEQ
Enclosures

,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-166-0006
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
02173214.29 Received : 06/15/2022
Former Colfax Service Station
Report Date : 06/24/2022
Sample ID :
Lab No :
Sampled:713 IRA Dr.
92220 Matrix:
6/13/2022 17:20
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Benzene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Bromobenzene 1 06/22/22 17:27 6200BJLB
<1.00 µg/L 1.00Bromochloromethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Bromodichloromethane 1 06/22/22 17:27 6200BJLB
<5.00 µg/L 5.00Bromoform 1 06/22/22 17:27 6200BJLB
<1.00 µg/L 1.00Bromomethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500n-Butylbenzene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500sec-Butyl benzene 1 06/22/22 17:27 6200BJLB
<2.00 µg/L 2.00tert-Butyl benzene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Carbon Tetrachloride 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Chlorobenzene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Chlorodibromomethane 1 06/22/22 17:27 6200BJLB
<1.00 µg/L 1.00Chloroethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Chloroform 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Chloromethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5002-Chlorotoluene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5004-Chlorotoluene 1 06/22/22 17:27 6200BJLB
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,2-Dibromoethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Dibromomethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 06/22/22 17:27 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 13 of 24
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-166-0006
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
02173214.29 Received : 06/15/2022
Former Colfax Service Station
Report Date : 06/24/2022
Sample ID :
Lab No :
Sampled:713 IRA Dr.
92220 Matrix:
6/13/2022 17:20
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 06/22/22 17:27 6200BJLB
<5.00 µg/L 5.00Dichlorodifluoromethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,1-Dichloroethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,2-Dichloroethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,1-Dichloroethene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,2-Dichloropropane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,3-Dichloropropane 1 06/22/22 17:27 6200BJLB
<2.00 µg/L 2.002,2-Dichloropropane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,1-Dichloropropene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 06/22/22 17:27 6200BJLB
<200 µg/L 200Ethanol 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Ethylbenzene 1 06/22/22 17:27 6200BJLB
<3.00 µg/L 3.00Hexachlorobutadiene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Isopropylbenzene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5004-Isopropyl toluene 1 06/22/22 17:27 6200BJLB
<1.00 µg/L 1.002-Hexanone 1 06/22/22 17:27 6200BJLB
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 06/22/22 17:27 6200BJLB
<2.00 µg/L 2.00Methylene Chloride 1 06/22/22 17:27 6200BJLB
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 06/22/22 17:27 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 14 of 24
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-166-0006
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
02173214.29 Received : 06/15/2022
Former Colfax Service Station
Report Date : 06/24/2022
Sample ID :
Lab No :
Sampled:713 IRA Dr.
92220 Matrix:
6/13/2022 17:20
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 06/22/22 17:27 6200BJLB
<1.00 µg/L 1.00Naphthalene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500n-Propylbenzene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Styrene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Tetrachloroethene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Toluene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Trichloroethene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Trichlorofluoromethane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 06/22/22 17:27 6200BJLB
<5.00 µg/L 5.00Vinyl Acetate 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500Vinyl Chloride 1 06/22/22 17:27 6200BJLB
<1.00 µg/L 1.00m,p-Xylene 1 06/22/22 17:27 6200BJLB
<0.500 µg/L 0.500o-Xylene 1 06/22/22 17:27 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 15 of 24