WS-4535_14716_CA_HRE_20231017_SpencerResultLetter

October 17, 2023
Heirs of W. Spencer c/o Ernestine S. Coble 3916 US Highway 311 Randleman, North Carolina 27317 Re: Health Risk Evaluation of Water Supply Tracking ID: Tank & Tummy #1, Incident #14716 Dear Ms. Coble: Please find attached the Sample Analytical Results for water samples collected from your well, identified
as Spencer 2, located at 3870 US Highway 311, Randleman, Randolph County, on August 29, 2023. The water supply well at this property is treated by a Point-of-Entry treatment system (POE) to remove contaminants. Water samples were taken at two points on the system. The samples were collected and
analyzed as part of the investigation of a petroleum release in the vicinity. The water samples were analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. Contaminants were detected in the water sample taken before and after treatment, as shown on the attached
Sample Analytical Results. Because contaminants were detected in the water sample, a Health Risk Evaluation of the water supply was performed by an environmental toxicologist in the Division of Waste Management. The Health Risk Evaluation, which is attached also, compares the detected concentration of contaminants to acceptable concentrations and provides a recommendation for safe use of the water. If you have any questions, please contact Dave Lilley at [phone] or contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely,

Ryan A. Bond, P.G. Environmental Program Consultant
Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachments: Health Risk Evaluation Spencer Sample Analytical Results
cc: Randolph County Health Department, via email, [e-mail] Randolph County Manager, via email, [e-mail]

October 13, 2023
TO: Ryan Bond
Winston-Salem Regional Office NC UST Section RE: Health Risk Evaluation
Incident # 14716
Spencer Well Sampling Results (Before) 3870 US Highway 311 Randleman, NC
During this sampling event, two contaminants were detected in the well water. The standards
used to determine if the water is suitable for drinking and cooking are the United States Environmental Protection Agency’s Maximum Contaminant Levels (MCLs) or, if no MCLs exist, North Carolina Groundwater Standards (2L).
If contaminant concentrations exceed the applicable standards for using the water for drinking
and cooking, the contaminant concentrations are further analyzed to determine if the water is suitable for other household uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. The chart below compares the detected contaminant concentrations with the applicable standard:
Contaminant Concentration (µg/L) MCL (µg/L) 2L (µg/L)
Shaded boxes indicate a standard has been exceeded.
µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion. RECOMMENDATION: The di-isopropyl ether and methyl tert-butyl ether concentrations exceed the applicable standards and the level that would be considered safe for other household uses.
Therefore, this water is not recommended for any residential use at this time.
David Lilley, Environmental Toxicologist
Division of Waste Management, NCDEQ

October 13, 2023 TO: Ryan Bond Winston-Salem Regional Office
NC UST Section RE: Health Risk Evaluation Incident # 14716 Spencer Well Sampling Results (After)
3870 US Highway 311 Randleman, NC During this sampling event, one contaminant was detected in the well water. The standards used to determine if the water is suitable for drinking and cooking are the United States Environmental
Protection Agency’s Maximum Contaminant Levels (MCLs) or, if no MCLs exist, North Carolina Groundwater Standards (2L). If the contaminant concentration exceeds the applicable standard for using the water for drinking and cooking, the contaminant concentration is further analyzed to determine if the water is suitable for
other household uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. The chart below compares the detected contaminant concentration with the applicable standard:
Sample ID Contaminant Concentration (µg/L) MCL (µg/L) 2L (µg/L)
µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per
billion. RECOMMENDATION: The detected contaminant did not exceed the applicable water standard.
Therefore, no restrictions on the use of this water are recommended at this time.

David Lilley, Environmental Toxicologist Division of Waste Management, NCDEQ
SAMPLE RESULTS - 12
L1651312
SPENCER 2 BEFORE
Collected date/time: 08/29/23 12:10
Metals (ICP) by Method 6010D
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Lead ND 6.00 1 09/05/2023 11:51 WG2125471
Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 1000 20 09/01/2023 18:11 WG2125261
Acrolein ND 1000 20 09/01/2023 18:11 WG2125261
Acrylonitrile ND 200 20 09/01/2023 18:11 WG2125261
Benzene ND 20.0 20 09/01/2023 18:11 WG2125261
Bromobenzene ND 20.0 20 09/01/2023 18:11 WG2125261
Bromodichloromethane ND 20.0 20 09/01/2023 18:11 WG2125261
Bromoform ND 20.0 20 09/01/2023 18:11 WG2125261
Bromomethane ND 100 20 09/01/2023 18:11 WG2125261
n-Butylbenzene ND 20.0 20 09/01/2023 18:11 WG2125261
sec-Butylbenzene ND 20.0 20 09/01/2023 18:11 WG2125261
tert-Butylbenzene ND 20.0 20 09/01/2023 18:11 WG2125261
Carbon tetrachloride ND 20.0 20 09/01/2023 18:11 WG2125261
Chlorobenzene ND 20.0 20 09/01/2023 18:11 WG2125261
Chlorodibromomethane ND 20.0 20 09/01/2023 18:11 WG2125261
Chloroethane ND 100 20 09/01/2023 18:11 WG2125261
Chloroform ND 100 20 09/01/2023 18:11 WG2125261
Chloromethane ND 50.0 20 09/01/2023 18:11 WG2125261
2-Chlorotoluene ND 20.0 20 09/01/2023 18:11 WG2125261
4-Chlorotoluene ND 20.0 20 09/01/2023 18:11 WG2125261
1,2-Dibromo-3-Chloropropane ND 100 20 09/01/2023 18:11 WG2125261
1,2-Dibromoethane ND 20.0 20 09/01/2023 18:11 WG2125261
Dibromomethane ND 20.0 20 09/01/2023 18:11 WG2125261
1,2-Dichlorobenzene ND 20.0 20 09/01/2023 18:11 WG2125261
1,3-Dichlorobenzene ND 20.0 20 09/01/2023 18:11 WG2125261
1,4-Dichlorobenzene ND 20.0 20 09/01/2023 18:11 WG2125261
Dichlorodifluoromethane ND 100 20 09/01/2023 18:11 WG2125261
1,1-Dichloroethane ND 20.0 20 09/01/2023 18:11 WG2125261
1,2-Dichloroethane ND 20.0 20 09/01/2023 18:11 WG2125261
1,1-Dichloroethene ND 20.0 20 09/01/2023 18:11 WG2125261
cis-1,2-Dichloroethene ND 20.0 20 09/01/2023 18:11 WG2125261
trans-1,2-Dichloroethene ND 20.0 20 09/01/2023 18:11 WG2125261
1,2-Dichloropropane ND 20.0 20 09/01/2023 18:11 WG2125261
1,1-Dichloropropene ND 20.0 20 09/01/2023 18:11 WG2125261
1,3-Dichloropropane ND 20.0 20 09/01/2023 18:11 WG2125261
2,2-Dichloropropane ND 20.0 20 09/01/2023 18:11 WG2125261
Di-isopropyl ether 170 20.0 20 09/01/2023 18:11 WG2125261
Ethylbenzene ND 20.0 20 09/01/2023 18:11 WG2125261
Hexachloro-1,3-butadiene ND 20.0 20 09/01/2023 18:11 WG2125261
Isopropylbenzene ND 20.0 20 09/01/2023 18:11 WG2125261
p-Isopropyltoluene ND 20.0 20 09/01/2023 18:11 WG2125261
2-Butanone (MEK)ND 200 20 09/01/2023 18:11 WG2125261
Methylene Chloride ND 100 20 09/01/2023 18:11 WG2125261
4-Methyl-2-pentanone (MIBK) ND 200 20 09/01/2023 18:11 WG2125261
Methyl tert-butyl ether 1180 20.0 20 09/01/2023 18:11 WG2125261
Naphthalene ND 100 20 09/01/2023 18:11 WG2125261
n-Propylbenzene ND 20.0 20 09/01/2023 18:11 WG2125261
Styrene ND 20.0 20 09/01/2023 18:11 WG2125261
1,1,1,2-Tetrachloroethane ND 20.0 20 09/01/2023 18:11 WG2125261
1,1,2,2-Tetrachloroethane ND 20.0 20 09/01/2023 18:11 WG2125261
Tetrachloroethene ND 20.0 20 09/01/2023 18:11 WG2125261
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Griffith Enterprise L1651312 09/08/23 16:43 28 of 52
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Griffith Enterprise L1651312 09/08/23 17:03 28 of 52
SAMPLE RESULTS - 12
L1651312
SPENCER 2 BEFORE
Collected date/time: 08/29/23 12:10
Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Toluene ND 20.0 20 09/01/2023 18:11 WG2125261
1,2,3-Trichlorobenzene ND 20.0 20 09/01/2023 18:11 WG2125261
1,2,4-Trichlorobenzene ND 20.0 20 09/01/2023 18:11 WG2125261
1,1,1-Trichloroethane ND 20.0 20 09/01/2023 18:11 WG2125261
1,1,2-Trichloroethane ND 20.0 20 09/01/2023 18:11 WG2125261
Trichloroethene ND 20.0 20 09/01/2023 18:11 WG2125261
Trichlorofluoromethane ND 100 20 09/01/2023 18:11 WG2125261
1,2,3-Trichloropropane ND 50.0 20 09/01/2023 18:11 WG2125261
1,2,4-Trimethylbenzene ND 20.0 20 09/01/2023 18:11 WG2125261
1,3,5-Trimethylbenzene ND 20.0 20 09/01/2023 18:11 WG2125261
Vinyl chloride ND 20.0 20 09/01/2023 18:11 WG2125261
o-Xylene ND 20.0 20 09/01/2023 18:11 WG2125261
m&p-Xylenes ND 40.0 20 09/01/2023 18:11 WG2125261
Ethanol ND 2000 20 09/01/2023 18:11 WG2125261
(S) Toluene-d8 110 80.0-120 09/01/2023 18:11 WG2125261
(S) 4-Bromofluorobenzene 100 77.0-126 09/01/2023 18:11 WG2125261
(S) 1,2-Dichloroethane-d4 122 70.0-130 09/01/2023 18:11 WG2125261
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Griffith Enterprise L1651312 09/08/23 16:43 29 of 52
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Griffith Enterprise L1651312 09/08/23 17:03 29 of 52
SAMPLE RESULTS - 13
L1651312
SPENCER 2 AFTER
Collected date/time: 08/29/23 12:20
Metals (ICP) by Method 6010D
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Lead ND 6.00 1 09/05/2023 11:54 WG2125471
Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Acetone ND 50.0 1 09/01/2023 15:19 WG2125261
Acrolein ND 50.0 1 09/01/2023 15:19 WG2125261
Acrylonitrile ND 10.0 1 09/01/2023 15:19 WG2125261
Benzene ND 1.00 1 09/01/2023 15:19 WG2125261
Bromobenzene ND 1.00 1 09/01/2023 15:19 WG2125261
Bromodichloromethane ND 1.00 1 09/01/2023 15:19 WG2125261
Bromoform ND 1.00 1 09/01/2023 15:19 WG2125261
Bromomethane ND 5.00 1 09/01/2023 15:19 WG2125261
n-Butylbenzene ND 1.00 1 09/01/2023 15:19 WG2125261
sec-Butylbenzene ND 1.00 1 09/01/2023 15:19 WG2125261
tert-Butylbenzene ND 1.00 1 09/01/2023 15:19 WG2125261
Carbon tetrachloride ND 1.00 1 09/01/2023 15:19 WG2125261
Chlorobenzene ND 1.00 1 09/01/2023 15:19 WG2125261
Chlorodibromomethane ND 1.00 1 09/01/2023 15:19 WG2125261
Chloroethane ND 5.00 1 09/01/2023 15:19 WG2125261
Chloroform ND 5.00 1 09/01/2023 15:19 WG2125261
Chloromethane ND 2.50 1 09/01/2023 15:19 WG2125261
2-Chlorotoluene ND 1.00 1 09/01/2023 15:19 WG2125261
4-Chlorotoluene ND 1.00 1 09/01/2023 15:19 WG2125261
1,2-Dibromo-3-Chloropropane ND 5.00 1 09/01/2023 15:19 WG2125261
1,2-Dibromoethane ND 1.00 1 09/01/2023 15:19 WG2125261
Dibromomethane ND 1.00 1 09/01/2023 15:19 WG2125261
1,2-Dichlorobenzene ND 1.00 1 09/01/2023 15:19 WG2125261
1,3-Dichlorobenzene ND 1.00 1 09/01/2023 15:19 WG2125261
1,4-Dichlorobenzene ND 1.00 1 09/01/2023 15:19 WG2125261
Dichlorodifluoromethane ND 5.00 1 09/01/2023 15:19 WG2125261
1,1-Dichloroethane ND 1.00 1 09/01/2023 15:19 WG2125261
1,2-Dichloroethane ND 1.00 1 09/01/2023 15:19 WG2125261
1,1-Dichloroethene ND 1.00 1 09/01/2023 15:19 WG2125261
cis-1,2-Dichloroethene ND 1.00 1 09/01/2023 15:19 WG2125261
trans-1,2-Dichloroethene ND 1.00 1 09/01/2023 15:19 WG2125261
1,2-Dichloropropane ND 1.00 1 09/01/2023 15:19 WG2125261
1,1-Dichloropropene ND 1.00 1 09/01/2023 15:19 WG2125261
1,3-Dichloropropane ND 1.00 1 09/01/2023 15:19 WG2125261
2,2-Dichloropropane ND 1.00 1 09/01/2023 15:19 WG2125261
Di-isopropyl ether ND 1.00 1 09/01/2023 15:19 WG2125261
Ethylbenzene ND 1.00 1 09/01/2023 15:19 WG2125261
Hexachloro-1,3-butadiene ND 1.00 1 09/01/2023 15:19 WG2125261
Isopropylbenzene ND 1.00 1 09/01/2023 15:19 WG2125261
p-Isopropyltoluene ND 1.00 1 09/01/2023 15:19 WG2125261
2-Butanone (MEK)ND 10.0 1 09/01/2023 15:19 WG2125261
Methylene Chloride ND 5.00 1 09/01/2023 15:19 WG2125261
4-Methyl-2-pentanone (MIBK) ND 10.0 1 09/01/2023 15:19 WG2125261
Methyl tert-butyl ether 1.41 1.00 1 09/01/2023 15:19 WG2125261
Naphthalene ND 5.00 1 09/01/2023 15:19 WG2125261
n-Propylbenzene ND 1.00 1 09/01/2023 15:19 WG2125261
Styrene ND 1.00 1 09/01/2023 15:19 WG2125261
1,1,1,2-Tetrachloroethane ND 1.00 1 09/01/2023 15:19 WG2125261
1,1,2,2-Tetrachloroethane ND 1.00 1 09/01/2023 15:19 WG2125261
Tetrachloroethene ND 1.00 1 09/01/2023 15:19 WG2125261
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Griffith Enterprise L1651312 09/08/23 16:43 30 of 52
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Griffith Enterprise L1651312 09/08/23 17:03 30 of 52
SAMPLE RESULTS - 13
L1651312
SPENCER 2 AFTER
Collected date/time: 08/29/23 12:20
Volatile Organic Compounds (GC/MS) by Method 6200B-1997/6200B-2011
Result Qualifier RDL Dilution Analysis Batch
Analyte ug/l ug/l date / time
Toluene ND 1.00 1 09/01/2023 15:19 WG2125261
1,2,3-Trichlorobenzene ND 1.00 1 09/01/2023 15:19 WG2125261
1,2,4-Trichlorobenzene ND 1.00 1 09/01/2023 15:19 WG2125261
1,1,1-Trichloroethane ND 1.00 1 09/01/2023 15:19 WG2125261
1,1,2-Trichloroethane ND 1.00 1 09/01/2023 15:19 WG2125261
Trichloroethene ND 1.00 1 09/01/2023 15:19 WG2125261
Trichlorofluoromethane ND 5.00 1 09/01/2023 15:19 WG2125261
1,2,3-Trichloropropane ND 2.50 1 09/01/2023 15:19 WG2125261
1,2,4-Trimethylbenzene ND 1.00 1 09/01/2023 15:19 WG2125261
1,3,5-Trimethylbenzene ND 1.00 1 09/01/2023 15:19 WG2125261
Vinyl chloride ND 1.00 1 09/01/2023 15:19 WG2125261
o-Xylene ND 1.00 1 09/01/2023 15:19 WG2125261
m&p-Xylenes ND 2.00 1 09/01/2023 15:19 WG2125261
Ethanol ND 100 1 09/01/2023 15:19 WG2125261
(S) Toluene-d8 111 80.0-120 09/01/2023 15:19 WG2125261
(S) 4-Bromofluorobenzene 100 77.0-126 09/01/2023 15:19 WG2125261
(S) 1,2-Dichloroethane-d4 113 70.0-130 09/01/2023 15:19 WG2125261
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Griffith Enterprise L1651312 09/08/23 16:43 31 of 52
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Griffith Enterprise L1651312 09/08/23 17:03 31 of 52