8602_SurryCountyMtAiry_CDLFOverMSWLF_ASDAddendumRequestResponse_DIN28730_20180130

January 30, 2018

Sent Via Email - [e-mail]

Mr. Dennis Bledsoe
Surry County Public Works
P.O. Box 1542
Mt. Airy, NC 27030

Re: ASD Addendum Workplan/Timeline-Metals
Mt. Airy C&D Over MSW Landfill
Surry County
Solid Waste Permit Numbers 8602-MSWLF-1983 and 8602-CDLF-2001
DIN 28730

Dear Mr. Bledsoe:

The Solid Waste Section (Section) has completed a review of the ASD Addendum
Workplan/Timeline-Metals dated January 25, 2018 (DIN 28727) and submitted on behalf of Surry
County by Municipal Engineering Services Company, P.A. for the closed Surry County Mt. Airy
C&D Over MSW Landfill, Solid Waste Permit Numbers 8602-MSWLF-1983 and 8602-CDLF-2001.
The ASD Addendum Workplan/Timeline-Metals was submitted in response to Section letters
dated August 8, 2016 (DIN 26557) and July 6, 2017 (DIN 28119) and in accordance with 15A NCAC
13B .1633.

Surry County is requesting approval of a temporary monitoring schedule of two years to collect
additional background samples with turbidity values less than 10 NTUs. The samples will be
collected during other seasons to account for potential seasonality, and at other background
locations designated as OW4- that are associated with the Hydrogeologic Design Study for Phase
4 of the adjacent Subtitle D MSW Landfill.

Based upon the information provided within the ASD Addendum Workplan/Timeline-Metals, the
Section approves the time extension and additional activities as described for the C&D Over MSW
Landfill. Please submit the ASD Addendum for this landfill in early 2020. The ASD Addendum for
the adjacent Surry County Subtitle D MSW Landfill (under Permit 8606-MSWLF-1998) should be
submitted as a separate demonstration.

If you have any questions or concerns regarding this letter, please feel free to contact me by
email at [e-mail] or by phone at 828.296.4706. Thank you for your
continued cooperation with this matter.

Sincerely,
Jaclynne Drummond
Hydrogeologist
Solid Waste Section, Division of Waste Management
NCDEQ

cc sent via email: Ed Mussler, Solid Waste Section Chief
Adam Ulishney, Environmental Compliance Branch Head
Jason Watkins, Field Operations Branch Head
Deb Aja, Western District Supervisor
C.T. Gerstell, Environmental Senior Specialist
Allen Gaither, Permitting Engineer
Jonathan Pfohl, MESCO