RA-493_1943_CA_HRE_20220201_Determination wsw 4 and 5A

February 1, 2022 TO: Mark Petermann NC UST Section
RE: Health Risk Evaluation Incident # 1943 Walter (Wayne) Paynter Well Sampling Results 2041 US Highway 1 Wise, 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)
L1449811-08 1,2-Dichloroethane 0.367 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

February 1, 2022
TO: Mark Petermann
NC UST Section RE: Health Risk Evaluation Incident # 1943
Willie Felts, Jr. Well Sampling Results 2061 US Highway 1 Wise, 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 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)
L1449811-09 1,2-Dichloroethane 0.894 5
Di-isopropyl ether 0.291 70
µg/L – Micrograms of contaminant per liter of water, roughly equivalent to parts per billion.

RECOMMENDATION: None of the contaminants detected exceed the applicable water standards. Therefore, no restrictions on the use of this water are recommended at this time. Although none of the contaminant levels exceed the applicable regulatory values, the level of 1,2-
dichloroethane in this well exceeds 0.5 µg/L, the value recommended by the North Carolina Department
of Health and Human Services (DHHS). The well user may want to contact the Private Well and Health program at (919) 707- 5900 for more information.
David Lilley, Environmental Toxicologist Division of Waste Management, NCDEQ