WS-6694_30208_CA_HRE_20150625

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North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R. van der Vaart Governor Secretary June 25, 2015 TO: Herb Berger NC UST Section

RE: Health Risk Evaluation Incident #30208 Town of Liberty Well Sampling Results 234 N. Greensboro Rd.
Liberty, 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)
3619-01 Trichloroethene 0.9 5
* The abbreviation 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, NCDENR