5802_Madison_MSWLF_LFGRemediation_FID1359996_20191018

Anchor QEA of North Carolina, PLLC ANCHOR
231 Haywood Street
Asheville, North Carolina 28801 kZ QEA
828.281.3350
October 18, 2019
Transmitted by email [e-mail]
Jaclynne Drummond
North Carolina Department of Environmental Quality
Division of Waste Management, Solid Waste Section
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, North Carolina 28778
Re: Request to Refurbish Landfill Gas Interceptor Trench
Madison County Closed Landfill
Permit No. 58-02
Dear Ms. Drummond,
On behalf of Madison County, Anchor QEA of North Carolina, PLLC (Anchor QEA), is pleased to
present this letter to request permission from the North Carolina Department of Environmental
Quality (DEQ) to refurbish the existing landfill gas interceptor trench at the Madison County Closed
Landfill.
The quarterly methane readings in landfill gas probe GP-5 during the last calendar year have shown
consistent detections of the gas at concentrations above its regulated and permitted threshold,
which is greater than methane's lower explosive limit (5%) at the property boundary, as summarized
in Table 1.
Table 1
Quarterly Methane Readings
Date of
Measurement
Methane
(%)
Atmospheric Pressure
(inches Hg)
11/16/18
15.9
28.03
02/07/19
19.4
27.98
05/08/19
12.9
28.02
08/07/19
17.1
27.73
Due to the consistent threshold exceedances, Madison County plans to refurbish the LFG interceptor
trench that is currently present along the northwestern boundary of the facility extending northward
from south of GP-5 then northeastward to of the vicinity of gas probe GP-6R. This trench was
\\ashevillel\asheville\Projects\Madison County\Landfill Gas\2018 Landfill Gas NOV\Correspondence\201908 Letter to Drummond\20191017 Ltr to Drummond for reconstruct
trenches.docx

August 18, 2018
Page 2
installed at the facility in accordance with the Apparent Landfill Gas Compliance Limit Exceedence &
Remediation submitted by McGill Associates, P.A., in May 2011.
Madison County plans to reconstruct the trench in accordance with the original design as shown in
Attachment A.
Thank you for your time and consideration. Please feel free to call or respond with any questions or
comments.
Sincerely,
Alec Macbeth
cc: Sam Lunsford, Madison County Solid Waste Director
Kris Riddle, North Carolina Department of Environmental Quality
Attachment
Attachment A Figure 1 Proposed Landfill Gas Interceptor Trench (from McGill, 2011)

Attachment A
Figure 1 Proposed Landfill Gas Interceptor
Trench (from McGill, 2011)

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1. PROPERTY LINES SHOWN AROUND PERIMETER OF CLOSED MSW LANDFILL
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OBTAINED FROM A SURVEY PERFORMED BY BEN H. FRISBY & SON RLS, MARSHALL
"JOHN
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N.C. TITLED F. BRYAN ESTATE, N0. 1 TOWNSHIP, MADISON COUNTY, N.C.
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DATED AUGUST 20, 1973. ALL OTHER PROPERTY LINES SHOWN OBTAINED FROM
MADISON COUNTY GIS AND ARE APPROXIMATE ONLY.
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AERIAL PHOTO WAS TAKEN IN 2007.
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2. EXISTING GROUNDWATER MONITORING WELLS, POTABLE WATER WELLS, SURFACE
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WATER & SPRING LOCATION INFORMATION PROVIDED BY MADISON COUNTY STAFF
AND ALTAMONT ENVIRONMENTAL, INC. AND ARE APPROXIMATE ONLY.
3. WASTE LIMITS SHOWN WERE OBTAINED FROM INFORMATION PROVIDED BY
FIGURE
MADISON COUNTY STAFF IN CONJUCTION WITH A DRAWING PREPARED BY JENSEN
ENGINEERING, CONSULTING ENGINEER, LEICESTER, N.C. TITLED "LANDFILL CLOSURE
PLAN" DATED APRIL, 1994. WASTE LIMITS ARE APPROXIMATE ONLY.
4. PROPOSED LANDFILL GAS INTERCEPTION TRENCH TO BE FIELD LOCATED
BETWEEN EDGE OF WASTE LIMIT AND FACILITY PROPERTY LINE.