0401_AnsonCountyLF_GWCessReqResp_DIN27827_20170531

May 31, 2017

Sent Via Email – [e-mail]

Mike Sessions
Anson County Utilities Director
907 North Washington Street
Wadesboro, NC 28170

Re: Groundwater Monitoring Cessation Request
Anson County Landfill
Permit ID # 0401
Anson County
DIN 27827

Dear Mr. Sessions:

The Solid Waste Section (Section) has completed a review of the 2016 Annual Water Quality Monitoring
Report (DIN 27684) submitted on behalf of Anson County by SCS Engineers, PC (SCS). This was the fifth
annual groundwater monitoring report since the Section reduced the sampling frequency from semi-annual
to annual on May 16, 2011. Anson County submitted a Groundwater Monitoring Evaluation Report on
March 18, 2011 to request groundwater monitoring cessation based on the absence of receptors, Solute Fate
Transport Model results, and the historical contaminant concentrations in groundwater. The Section denied
the monitoring cessation request due to reported benzene concentrations above the standards established in
15A NCAC 2L (2L Standards) at the time, but reduced the monitoring frequency from semi-annual to
annual.

There were no volatile organic compounds reported above laboratory reporting limits during the 2016
monitoring event and cobalt was the only inorganic constituent reported above the 2L Standard. As a result,
SCS recommended groundwater monitoring cessation at the facility. Due to an exceedance of the 2L
Standard, the Section will require continued groundwater monitoring at the facility. Due to an overall
decline in contaminant concentrations, the required monitoring frequency will be reduced from annual to
biannual. The Section will re-evaluate the need for continued monitoring after the second biannual
monitoring event in 2020.

Please contact me at [phone] or by e-mail at [e-mail] if you have any questions or
concerns regarding this letter. Thank you in advance for your anticipated cooperation with this matter.

Sincerely,

Ervin Lane
Compliance Hydrogeologist
Solid Waste Section

cc: Albert Glenn, P.E., SCS Engineers, PC
Jason Watkins, Field Operations Branch Head
Deb Aja, Western District Supervisor
Perry Sugg, P.G., Permitting Hydrogeologist
Teresa Bradford, Environmental Senior Specialist