7601_RandolphCountyMSWLF_August2024AppdxIIReductionRqstAppr_FID1894722_20240830

August 30th, 2024

Sent via email: [e-mail]

Mr. Paxton Arthurs, P.E.
Public Works Director
Randolph County
725 McDowell Road
Asheboro, NC 27205

Re: Request to Reduce Appendix II Monitoring Requirements
Randolph County Landfill, Permit #76-01
FID: 1894722

Dear Mr. Arthurs:

The Solid Waste Section (Section) has reviewed the Request to Reduce Appendix II Monitoring
Requirements (FID 1894497) submitted on behalf of the County by LaBella Associates (LaBella). The facility
is currently undergoing assessment monitoring and corrective action via monitored natural attenuation.
Assessment monitoring at the facility consists of analyzing groundwater samples for the full suite of
Appendix II parameters during the spring monitoring event and Appendix I parameters plus previously
detected Appendix II parameters during the fall monitoring event. Based on recent analytical results,
LaBella is requesting to modify the assessment monitoring requirements.

Pesticides and herbicides have not been detected in groundwater samples since the April 2007 monitoring
event. Additionally, PCBs and cyanide have never been detected in groundwater samples since the
initiation of assessment monitoring in 1996. As a result, LaBella is requesting to discontinue analyzing
groundwater samples for pesticides, herbicides, PCBs, and cyanide during the spring monitoring events.
In addition, mercury, tin, and dichlorodifluoromethane have been the only Appendix II constituents
detected in groundwater samples since 2015. LaBella proposes to only analyze groundwater samples for
Appendix I constituents plus mercury, tin, and dichlorodifluoromethane during the fall monitoring events.

Based on the analytical result trends, the Section approves the reduction request, and LaBella may
proceed as proposed. 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 cooperation in this
matter.

Sincerely,

Ervin Lane
Hydrogeologist
Solid Waste Section, Division of Waste Management
NCDEQ

cc sent via email: Perry Sugg, P.G. - SWS Environmental Compliance Branch Head
Chuck Kirchner - SWS Environmental Senior Specialist
Van Burbach, Ph.D., P.G. - LaBella Associates
Kyle Mertens - Waste Management
Mike McFeeley - Waste Management
Amanda Fairley - Waste Management
Seth Ramaley, P.G. - Waste Management