FA-231_6538_CA_HRE_20230622_WSW-2

June 22, 2023

Emily Dunn
8344 NC Hwy 705
Eagle Springs, NC 27242

RE: Water Supply Well Sampling Results (Pre-POE)
8344 NC Hwy 705
Eagle Springs, Moore County, NC

Dear Ms. Dunn:

A groundwater sampling event for incident #6538 (Brewer’s Repair Shop) was conducted on June 7,
2023. As part of this sampling event, a water sample was collected from your water supply well (WSW-2
Pre-POE). The analytical data from these samples indicate the presence of one or more contaminates in
the groundwater above laboratory detection levels.

Benzene 0.72 µg/L (Pre-POE) Drinking Water Standard is 5 µg/L
Not Detected (Post-POE)

Methyl-tert-Butyl Ether 26.9 µg/L (Pre-POE) Drinking Water Standard is 20 µg/L.
Not Detected (Post-POE)

1,2,4-Trimethylbenzene 0.83 µg/L (Pre-POE) Drinking Water Standard is 400 µg/L
Not Detected (Post)-POE

Based on these data a Health Risk Evaluation was performed and the water pre-treatment system is not
recommended for drinking or cooking at this time. No restrictions are recommended for the use of the
water post-treatment system.

If you have any questions, please contact me at [e-mail] or [phone].

Sincerely,
Thomas Chapman, Hydrogeologist
Underground Storage Tank Section
Division of Waste Management, NCDEQ

Attachments: FA-231_6538_CA_HRE_20230622_ HRE Results WSW-2 Pre-POE
FA-231_6538_CA_LAB_20230619_WSW-2

C: Matt Garner, Health Director, Moore County, via [e-mail]
Wayne Vest, Randolph County Manager, via [e-mail]

June 22, 2023
TO: Thomas Chapman
NC UST Section
RE: Health Risk Evaluation
Incident # 6538
Emily Dunn Well Sampling Results (Pre)
8344 NC HWY 705
Eagle Springs, NC
During this sampling event, three 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 contaminant concentrations exceed the applicable standards for using the water for drinking
and cooking, the contaminant concentrations are further analyzed to determine if the water is suitable for
other non-ingestive 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)
98004 Methyl tert-butyl ether 26.9 20
Benzene 0.720 5
1,2,4-Trimethylbenzene 0.827 400
Shaded boxes indicate a standard has been exceeded.
μg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per
billion.
RECOMMENDATION: The methyl tert butyl ether concentration in this well exceeds the
applicable standard. Therefore, this water is not recommended for drinking or cooking at this time. No
restrictions are recommended for using the water for other non-ingestive uses, such as showering,
bathing, washing dishes, flushing toilets, and hand washing.
David Lilley, Environmental Toxicologist
Division of Waste Management, NCDEQ

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