WS-3254_9547_CA_HRE_20140825

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North Carolina Department of Environment and Natural Resources
Pat McCrory Governor John E. Skvarla, III Secretary August 25, 2014 TO: Herb Berger NC UST Section

RE: Health Risk Evaluation Tracking ID: 9547 Ted Roberts Well Sampling Results 983 Highway 21
State Road, 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 (ug/l)* MCL (ug/l) 2L (ug/l)
788935 MTBE (methyl tert-butyl ether) 1.73 20
* The abbreviation ug/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