MO-9324_40784_G_WSW_20230411_TSITOURISHRE

November 28, 2022 Steve & Michael Tsitouris
569 Autumn Leaf Road Troutman, North Carolina 28166
Re: Health Risk Evaluation of Water Supply 569 Autumn Leaf Road, Troutman, Iredell County Tracking ID: Incident Number: 40784 Dear Messrs. Tsitouris: Please find attached the Sample Analytical Results for a water sample collected March 29, 2023. 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 Mooresville Regional Office. Sincerely, Brad C. Newton, P.G. Hydrogeologist Mooresville Regional Office UST Section, Division of Waste Management, NCDEQ
Attachments: Tsitouris Sample Analytical Results Health Risk Evaluation
cc: Iredell County Health Department Iredell County Manager

April 11, 2023

TO: Brad Newton Mooresville Regional Office NC UST Section
RE: Health Risk Evaluation
Incident # 40784 Tsitouris Well Sampling Results 569 Autumn Leaf Road Troutman, 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)
400-235334-4 Benzene 0.271 5
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
Client Sample Results
Job ID: 400-235334-1Client: Terraquest Environmental Consultants, PC
Project/Site: Perth Mini-Mart
Lab Sample ID: 400-235334-4Client Sample ID: WSW2
Matrix: WaterDate Collected: 03/29/23 11:50
Date Received: 03/31/23 09:09
Method: SM6200-B - Volatile Organic Compounds
RL MDL
0.160 U 1.00 0.160 ug/L 04/05/23 13:06 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
1,1,1,2-Tetrachloroethane
1.00 0.180 ug/L 04/05/23 13:06 10.180 U1,1,1-Trichloroethane
1.00 0.500 ug/L 04/05/23 13:06 10.500 U1,1,2,2-Tetrachloroethane
5.00 0.210 ug/L 04/05/23 13:06 10.210 U1,1,2-Trichloroethane
1.00 0.500 ug/L 04/05/23 13:06 10.500 U1,1-Dichloroethane
1.00 0.500 ug/L 04/05/23 13:06 10.500 U1,1-Dichloroethene
1.00 0.500 ug/L 04/05/23 13:06 10.500 U1,1-Dichloropropene
1.00 0.900 ug/L 04/05/23 13:06 10.900 U1,2,3-Trichlorobenzene
5.00 0.840 ug/L 04/05/23 13:06 10.840 U1,2,3-Trichloropropane
1.00 0.820 ug/L 04/05/23 13:06 10.820 U1,2,4-Trichlorobenzene
1.00 0.820 ug/L 04/05/23 13:06 10.820 U1,2,4-Trimethylbenzene
1.00 0.230 ug/L 04/05/23 13:06 10.230 U1,2-Dibromoethane (EDB)
1.00 0.500 ug/L 04/05/23 13:06 10.500 U1,2-Dichlorobenzene
1.00 0.190 ug/L 04/05/23 13:06 10.190 U1,2-Dichloroethane
1.00 0.500 ug/L 04/05/23 13:06 10.500 U1,2-Dichloropropane
1.00 0.560 ug/L 04/05/23 13:06 10.560 U1,3,5-Trimethylbenzene
1.00 0.540 ug/L 04/05/23 13:06 10.540 U1,3-Dichlorobenzene
1.00 0.500 ug/L 04/05/23 13:06 10.500 U1,3-Dichloropropane
1.00 0.640 ug/L 04/05/23 13:06 10.640 U1,4-Dichlorobenzene
1.00 0.500 ug/L 04/05/23 13:06 10.500 U2,2-Dichloropropane
25.0 2.60 ug/L 04/05/23 13:06 12.60 U2-Butanone (MEK)
1.00 0.570 ug/L 04/05/23 13:06 10.570 U2-Chlorotoluene
25.0 1.40 ug/L 04/05/23 13:06 11.40 U2-Hexanone
1.00 0.560 ug/L 04/05/23 13:06 10.560 U4-Chlorotoluene
25.0 1.80 ug/L 04/05/23 13:06 11.80 U4-Methyl-2-pentanone (MIBK)
25.0 10.0 ug/L 04/05/23 13:06 110.0 UAcetone
1.00 0.130 ug/L 04/05/23 13:06 10.271 JBenzene
1.00 0.540 ug/L 04/05/23 13:06 10.540 UBromobenzene
1.00 0.210 ug/L 04/05/23 13:06 10.210 UBromochloromethane
1.00 0.500 ug/L 04/05/23 13:06 10.500 UBromodichloromethane
5.00 0.250 ug/L 04/05/23 13:06 10.250 UBromoform
1.00 0.980 ug/L 04/05/23 13:06 10.980 UBromomethane
1.00 0.190 ug/L 04/05/23 13:06 10.190 UCarbon tetrachloride
1.00 0.150 ug/L 04/05/23 13:06 10.150 UChlorobenzene
1.00 0.760 ug/L 04/05/23 13:06 10.760 UChloroethane
1.00 1.00 ug/L 04/05/23 13:06 11.00 UChloroform
1.00 0.320 ug/L 04/05/23 13:06 10.320 UChloromethane
1.00 0.200 ug/L 04/05/23 13:06 10.200 Ucis-1,2-Dichloroethene
5.00 0.500 ug/L 04/05/23 13:06 10.500 Ucis-1,3-Dichloropropene
1.00 0.240 ug/L 04/05/23 13:06 10.240 UDibromochloromethane
1.00 0.850 ug/L 04/05/23 13:06 10.850 UDichlorodifluoromethane
1.00 0.200 ug/L 04/05/23 13:06 10.200 UDiisopropyl ether
100 24.0 ug/L 04/05/23 13:06 124.0 UEthanol
1.00 0.500 ug/L 04/05/23 13:06 10.500 UEthylbenzene
1.00 0.530 ug/L 04/05/23 13:06 10.530 UIsopropylbenzene
1.00 0.220 ug/L 04/05/23 13:06 10.220 UMethyl tert-butyl ether
5.00 3.00 ug/L 04/05/23 13:06 13.00 UMethylene Chloride
5.00 0.630 ug/L 04/05/23 13:06 10.630 Um-Xylene & p-Xylene
5.00 3.00 ug/L 04/05/23 13:06 13.00 UNaphthalene
Eurofins Pensacola
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Client Sample Results
Job ID: 400-235334-1Client: Terraquest Environmental Consultants, PC
Project/Site: Perth Mini-Mart
Lab Sample ID: 400-235334-4Client Sample ID: WSW2
Matrix: WaterDate Collected: 03/29/23 11:50
Date Received: 03/31/23 09:09
Method: SM6200-B - Volatile Organic Compounds (Continued)
RL MDL
0.760 U 1.00 0.760 ug/L 04/05/23 13:06 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
n-Butylbenzene
1.00 0.690 ug/L 04/05/23 13:06 10.690 UN-Propylbenzene
5.00 0.600 ug/L 04/05/23 13:06 10.600 Uo-Xylene
1.00 0.710 ug/L 04/05/23 13:06 10.710 Up-Cymene (p-Isopropyltoluene)
1.00 0.700 ug/L 04/05/23 13:06 10.700 Usec-Butylbenzene
1.00 1.00 ug/L 04/05/23 13:06 11.00 UStyrene
1.00 0.630 ug/L 04/05/23 13:06 10.630 Utert-Butylbenzene
1.00 0.900 ug/L 04/05/23 13:06 10.900 UTetrachloroethene
1.00 0.410 ug/L 04/05/23 13:06 10.410 UToluene
1.00 0.500 ug/L 04/05/23 13:06 10.500 Utrans-1,2-Dichloroethene
5.00 0.200 ug/L 04/05/23 13:06 10.200 Utrans-1,3-Dichloropropene
1.00 0.150 ug/L 04/05/23 13:06 10.150 UTrichloroethene
1.00 0.520 ug/L 04/05/23 13:06 10.520 UTrichlorofluoromethane
25.0 0.930 ug/L 04/05/23 13:06 10.930 UVinyl acetate
1.00 0.500 ug/L 04/05/23 13:06 10.500 UVinyl chloride
10.0 1.60 ug/L 04/05/23 13:06 11.60 UXylenes, Total
4-Bromofluorobenzene 98 72-119 04/05/23 13:06 1
Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery
Dibromofluoromethane 99 04/05/23 13:06 175-126
Toluene-d8 (Surr)92 04/05/23 13:06 164-132
Eurofins Pensacola
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