Walnut Cove memo

F
Waste Managemen t
ENVIRONMENTAL QUALITY
MEMORANDUM
Date: March 30, 2017
To: Debra Watts
Division of Water Resources
Water Quality Regional Operations Section
From: Cheryl Marks, Pre -Regulatory Landfill Unit Supervisor
NCDENR, Division of Waste Management
Re: No Further Action
Walnut Cove Dump
NONCD0000577
ROY COOPER
Governor
MICHAEL S. REGAN
Secretory
MICHAEL SCOTT
Director
This memorandum is to respond to your query about contamination at the Walnut Cove site. The approximately 0.6-
acre dump had a waste volume of 2,958 tons that was exhumed and placed in an appropriate permitted waste facility in
late spring 2016. Only municipal waste was associated with this site, no indication of ash disposal. Confirmation soil
sampling was conducted in the excavated waste areas the analytical results are within natural background for the area.
No residual contamination associated with Walnut Cove waste disposal remains.
Attempts were made to install monitoring wells in saprolite, but the shallowest aquifer is in competent rock. We did
conduct leachate testing and the material did not indicate contaminants.
Documented in both public literature and through site -specific soil analysis, arsenic, iron and manganese are naturally
occurring in the area of the Walnut Cove landfill. Chromium was not detected in any media sampling during our
remedial investigation.
There is one drinking water supply well is within 500-feet from the mitigated site located at 1184 Old Plantation Road.
With permission from the property owner, our program sampled the drinking water supply well. Results from the
February 2, 2017 sampling event did not detect the presence analytes above 15A NCAC 2L standards or U.S. EPA
maximum contaminant levels. The second closest drinking water supply well, located at 1245 Middleton Loop Road is
approximately 800-feet from the remediated site. No analytes were detected above 15A NCAC 2L standards or U.S.
EPA maximum contaminant levels. Based on complete exhumation and no indications of groundwater contamination
we believe this site has completed remediation.
Additional details are available through our electronic file system accessed on the web portal at:
haps:Hdeq.nc.gov/waste-management-laserfiche
For best results enter the site identification number into ID box.
Our office addresses old uncontrolled dumps and landfills that operated before regulations were in place
controlling what went in the landfill. Additional information about the Pre -Regulatory Landfill Program is
located at: htlps:Hdeq.nc.gov/about/divisions/waste-management/superfund-section/pre-re ulatoKy-landfill-
pro ram. If you have any additional questions you can reach me at [phone].
State of North Carolina I Environmental Quality I Waste Management
1646 Mail Service Center 1217 West Jones Street I Raleigh, NC 27699-1646
919 707 8200 Telephone