WS-2534_5003_CA_HRE_20230316_SW5ResultLetter

March 16, 2023
Kyle Hollingsworth 2124 Old Plank Road Sophia, North Carolina 27350 Re: Health Risk Evaluation of Water Supply Tracking ID: Midway Citgo, Incident #5003 Dear Mr. Hollingsworth:
Please find attached the Sample Analytical Results for water samples collected from your well, identified as SW-5A, located at 2124 Old Plank Road, Sophia, Randolph County, on August 15, 2022, and December
8, 2022. The samples were collected and analyzed as part of the investigation of a petroleum release in the vicinity. The water samples were analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. Contaminants were detected in the water samples, as shown on the attached Sample
Analytical Results. Because contaminants were detected in the water samples, a Health Risk Evaluation of the water supply was performed by an environmental toxicologist in the Division of Waste Management. The Health Risk Evaluation, which is attached also, compares the detected concentration of contaminants to acceptable concentrations and provides a recommendation for safe use of the water. If you have any questions, please contact Dave Lilley at [phone] or contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely,

Ryan A. Bond, P.G. Environmental Program Consultant Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachments: Hollingsworth Sample Analytical Results Health Risk Evaluation
cc: Randolph County Health Department, via email, [e-mail] Randolph County Manager, via email, [e-mail]

March 15, 2023
TO: Ryan Bond
Winston-Salem Regional Office NC UST Section RE: Health Risk Evaluation
Incident # 5003
Hollingsworth Well Sampling Results 2124 Plank Road Sophia, NC
During this August 15, 2022 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)
92620994004 Methyl-tert-butyl ether 2.9 20
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, NCDEQ

March 15, 2023
TO: Ryan Bond Winston-Salem Regional Office NC UST Section
RE: Health Risk Evaluation Incident # 5003 Hollingsworth Well Sampling Results 2124 Plank Road
Sophia, NC During this December 8, 2022 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)
92641069021 Methyl-tert-butyl ether 2.5 20
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, NCDEQ