WI-1458_17265_CA_HRE_20220429_Results

April 29, 2022

Mr. William Wells
106 Wintergreen Rd.
Wilmington, NC 28409
Re: Health Risk Evaluation of Water Supply
Tracking ID: Incident #17265, 106 Wintergreen

Dear Mr. Wells:

Please find attached the Sample Analytical Results for a water sample collected from your well,
located at 106 Wintergreen Rd, Wilmington, New Hanover County, on April 6, 2022. The sample was
collected and analyzed as part of the investigation of a petroleum release in the vicinity. The water sample
was analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical
Results. Contaminants were detected in the water sample, 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 Wilmington Regional Office.

Sincerely,
Liz Price
Hydrogeologist
Wilmington Regional Office
UST Section, Division of Waste Management, NCDEQ

Attachments: Sample Analytical Results
Health Risk Evaluation

cc: Maureen Jackson, via email correspondence
New Hanover County Health Department
Chris Coudriet, County Manager, New Hanover County

Wilmington Regional Office | 127 Cardinal Drive Extension | Wilmington, NC 28405 | [phone] 

April 27, 2022

TO: Liz Price Wilmington Regional Office NC UST Section
RE: Health Risk Evaluation
Incident # 17265 106 Wintergreen Rd Well Sampling Results Wilmington, NC
During this sampling event, three 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 any contaminant concentrations exceed applicable standards for using the water for drinking
and cooking, those 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 standards:
Sample ID Contaminant Concentration (µg/L) MCL (µg/L) 2L (µg/L)
98317 Benzene 0.559 5
Ethylbenzene 0.256 700
Toluene 0.222 1,000
µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per
billion.
RECOMMENDATION: None of the contaminants detected exceeded the applicable water standards. Therefore, no restrictions on the use of this water are recommended at this time.
David Lilley, Environmental Toxicologist Division of Waste Management, NCDEQ
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28409
22-102-0010
01024
ATC Group Services, LLC - Raleigh, NC
609A Piner Road Suite 115
Maureen Jackson
Wilminton
Received : 04/12/2022
Pantry 938
Report Date : 04/20/2022
Sample ID :
Lab No :
Sampled:106 Wintergreen Injection Will
98317 Matrix:
4/8/2022 9:30
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V17759 04/19/22 14:00
<1.80 µg/L 1.80 10.0Acetone 1 04/19/22 23:11 V17760JLB
0.559 µg/L 0.180 0.500Benzene 1 04/19/22 23:11 V17760JLB
<0.210 µg/L 0.210 0.500Bromobenzene 1 04/19/22 23:11 V17760JLB
<0.420 µg/L 0.420 1.00Bromochloromethane 1 04/19/22 23:11 V17760JLB
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 04/19/22 23:11 V17760JLB
<1.50 µg/L 1.50 5.00Bromoform 1 04/19/22 23:11 V17760JLB
<0.280 µg/L 0.280 1.00Bromomethane 1 04/19/22 23:11 V17760JLB
<0.180 µg/L 0.180 0.500n-Butylbenzene 1 04/19/22 23:11 V17760JLB
<0.200 µg/L 0.200 0.500
sec-Butyl benzene 1 04/19/22 23:11 V17760JLB
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 04/19/22 23:11 V17760JLB
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 04/19/22 23:11 V17760JLB
<0.190 µg/L 0.190 0.500Chlorobenzene 1 04/19/22 23:11 V17760JLB
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 04/19/22 23:11 V17760JLB
<0.430 µg/L 0.430 1.00Chloroethane 1 04/19/22 23:11 V17760JLB
<0.220 µg/L 0.220 0.500Chloroform 1 04/19/22 23:11 V17760JLB
<0.220 µg/L 0.220 0.500
Chloromethane 1 04/19/22 23:11 V17760JLB
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 04/19/22 23:11 V17760JLB
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 04/19/22 23:11 V17760JLB
<0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 04/19/22 23:11 V17760JLB
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 04/19/22 23:11 V17760JLB
<0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 04/19/22 23:11 V17760JLB
<0.230 µg/L 0.230 0.500Dibromomethane 1 04/19/22 23:11 V17760JLB
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 13 of 34
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28409
22-102-0010
01024
ATC Group Services, LLC - Raleigh, NC
609A Piner Road Suite 115
Maureen Jackson
Wilminton
Received : 04/12/2022
Pantry 938
Report Date : 04/20/2022
Sample ID :
Lab No :
Sampled:106 Wintergreen Injection Will
98317 Matrix:
4/8/2022 9:30
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V17759 04/19/22 14:00
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 04/19/22 23:11 V17760JLB
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 04/19/22 23:11 V17760JLB
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 04/19/22 23:11 V17760JLB
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 04/19/22 23:11 V17760JLB
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 04/19/22 23:11 V17760JLB
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 04/19/22 23:11 V17760JLB
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 04/19/22 23:11 V17760JLB
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 04/19/22 23:11 V17760JLB
<0.180 µg/L 0.180 0.500
trans-1,2-Dichloroethene 1 04/19/22 23:11 V17760JLB
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 04/19/22 23:11 V17760JLB
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 04/19/22 23:11 V17760JLB
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 04/19/22 23:11 V17760JLB
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 04/19/22 23:11 V17760JLB
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 04/19/22 23:11 V17760JLB
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 04/19/22 23:11 V17760JLB
<42.0 µg/L 42.0 200
Ethanol 1 04/19/22 23:11 V17760JLB
0.256 J µg/L 0.170 0.500Ethylbenzene 1 04/19/22 23:11 V17760JLB
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 04/19/22 23:11 V17760JLB
<0.380 µg/L 0.380 1.002-Hexanone 1 04/19/22 23:11 V17760JLB
<0.180 µg/L 0.180 0.500Isopropylbenzene 1 04/19/22 23:11 V17760JLB
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 04/19/22 23:11 V17760JLB
<0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 04/19/22 23:11 V17760JLB
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 14 of 34
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28409
22-102-0010
01024
ATC Group Services, LLC - Raleigh, NC
609A Piner Road Suite 115
Maureen Jackson
Wilminton
Received : 04/12/2022
Pantry 938
Report Date : 04/20/2022
Sample ID :
Lab No :
Sampled:106 Wintergreen Injection Will
98317 Matrix:
4/8/2022 9:30
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V17759 04/19/22 14:00
<0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 04/19/22 23:11 V17760JLB
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 04/19/22 23:11 V17760JLB
<0.330 µg/L 0.330 2.00Methylene Chloride 1 04/19/22 23:11 V17760JLB
<0.470 µg/L 0.470 1.00Naphthalene 1 04/19/22 23:11 V17760JLB
<0.190 µg/L 0.190 0.500n-Propylbenzene 1 04/19/22 23:11 V17760JLB
<0.220 µg/L 0.220 0.500Styrene 1 04/19/22 23:11 V17760JLB
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 04/19/22 23:11 V17760JLB
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 04/19/22 23:11 V17760JLB
<0.220 µg/L 0.220 0.500
Tetrachloroethene 1 04/19/22 23:11 V17760JLB
0.222 J µg/L 0.220 0.500Toluene 1 04/19/22 23:11 V17760JLB
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 04/19/22 23:11 V17760JLB
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 04/19/22 23:11 V17760JLB
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 04/19/22 23:11 V17760JLB
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 04/19/22 23:11 V17760JLB
<0.180 µg/L 0.180 0.500Trichloroethene 1 04/19/22 23:11 V17760JLB
<0.180 µg/L 0.180 0.500
Trichlorofluoromethane 1 04/19/22 23:11 V17760JLB
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 04/19/22 23:11 V17760JLB
<0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 04/19/22 23:11 V17760JLB
<0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 04/19/22 23:11 V17760JLB
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 04/19/22 23:11 V17760JLB
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 04/19/22 23:11 V17760JLB
<0.210 µg/L 0.210 0.500o-Xylene 1 04/19/22 23:11 V17760JLB
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 15 of 34
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 28409
22-102-0010
01024
ATC Group Services, LLC - Raleigh, NC
609A Piner Road Suite 115
Maureen Jackson
Wilminton
Received : 04/12/2022
Pantry 938
Report Date : 04/20/2022
Sample ID :
Lab No :
Sampled:106 Wintergreen Injection Will
98317 Matrix:
4/8/2022 9:30
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V17759 04/19/22 14:00
<0.420 µg/L 0.420 1.00m,p-Xylene 1 04/19/22 23:11 V17760JLB
<0.21 µg/L 0.210 0.500Xylene (Total)1 04/19/22 23:11 V17760
Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%04/19/22 23:111 JLB V17760
Surrogate: Dibromofluoromethane 99.0 Limits: 70-130%04/19/22 23:111 JLB V17760
Surrogate: 1,2-Dichloroethane - d4 101 Limits: 70-130%04/19/22 23:111 JLB V17760
Surrogate: Toluene-d8 100 Limits: 70-130%04/19/22 23:111 JLB V17760
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 16 of 34