RA-1706_10508_CA_HRE_20200312_Determination PW-1 and 2

March 12, 2020

TO: Mark Petermann
NC UST Section

RE: Health Risk Evaluation
Tracking ID: 10508
Frisky Boutique Well Sampling Results
1720 US Highway 70
Durham, 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)
LA61492-9 Di-Isopropyl Ether 3.8 70
Methyl Tert Butyl Ether 13.3 20
µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion.

RECOMMENDATION: None of the contaminants detected exceeded the applicable water standards.
Therefore, no restrictions on the use of this water are recommended at this time.

David Lilley, Environmental Toxicologist
Division of Waste Management, NCDEQ

March 12, 2020

TO: Mark Petermann
NC UST Section

RE: Health Risk Evaluation
Tracking ID: 10508
Miracle Touch Well Sampling Results
1714 US Highway 70
Durham, 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)
LA61492-8 Di-Isopropyl Ether 2.0 70
Methyl Tert Butyl Ether 9.4 20
µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion.

RECOMMENDATION: None of the contaminants detected exceeded the applicable water standards.
Therefore, no restrictions on the use of this water are recommended at this time.

David Lilley, Environmental Toxicologist
Division of Waste Management, NCDEQ