RA-3296_13012_CA_HRE_20230825_Determinations WSW 8,12

August 25, 2023 TO: Mark Petermann NC UST Section
RE: Health Risk Evaluation Incident # 13012 Dove Medical Supply LLC Well Sampling Results 7301 Summerfield Road
Summerfield, 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)
92674978010 1,2-Dichloroethane 1.0 5
Diisopropyl Ether 0.98 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

August 25, 2023 TO: Mark Petermann
NC UST Section
RE: Health Risk Evaluation Incident # 13012 John Turner Well Sampling Results
7231 Summerfield Road
Summerfield, 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)
92674978012 Chloroform 2.1 80*
µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per
billion.
* As total trihalomethanes. 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