6301_Moore_MSWLF_LFGRemediationPlan_DIN28747_20180131

Golder, Golder Associates and the GA globe design are trademarks of Golder Associates Corporation

LANDFILL GAS REMEDIATION
PLAN
Closed Moore County Municipal Solid Waste Landfill,
Permit No. 63-01
Moore County, North Carolina

Submitted To: Moore County Public Works
5227 Hwy 15-501 Carthage, North Carolina 28327

Submitted By: Golder Associates NC, Inc. 5B Oak Branch Drive
Greensboro, NC 27407

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LANDFILL GAS REMEDIATION PLAN
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Table of Contents
COVER LETTER
1.0 INTRODUCTION ............................................................................................................................... 1
2.0 FACILITY DESCRIPTION ................................................................................................................. 1
3.0 COMPLIANCE MONITORING NETWORK AND HISTORY ............................................................. 2
4.0 REMEDIATION PLAN SUMMARY ................................................................................................... 2
5.0 REMEDIATION PHASES .................................................................................................................. 3
5.1 Ongoing Presumptive Remedies .................................................................................................. 3
5.2 Installation of Cut-Off Trench (in the area of MW-15) ................................................................... 3
5.3 Quality Assurance ......................................................................................................................... 4
6.0 CONCLUSIONS ................................................................................................................................ 4
List of Tables
Table 1 Historical Methane Summary
List of Drawings
Drawing 1 Groundwater Surface Contour Map – April 11, 2017
Drawing 2 Landfill Gas Remediation Plan Layout Drawing 3 Landfill Gas Remediation Plan Details

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1.0 INTRODUCTION
This Landfill Gas (LFG) Remediation Plan has been prepared by Golder Associates NC, Inc. (Golder) for
the closed Moore County Municipal Solid Waste (MSW) Landfill in Moore County, North Carolina (NC), due
to continued exceedances in several compliance monitoring points. This Plan has been prepared in
response to the September 28, 2017 correspondence received from the NC Department of Environmental
Quality (NC DEQ) and subsequent correspondence dated December 11, 2017. The Moore County Landfill,
which consists of a closed municipal solid waste (MSW) and an active construction and demolition (C&D)
landfill, is maintained by the County under Permit No. 63-01 issued by the NC DEQ.
2.0 FACILITY DESCRIPTION
The Moore County Landfill (the “facility” or the “site”) is located in southwestern Moore County between the
towns of Pinehurst and Aberdeen, North Carolina, as shown on the inlay of Drawing 1. The facility is bound
to the west by Horse Creek and to the north and south by unnamed tributaries of Horse Creek. A power-
line right-of-way transects the property and represents the eastern boundary of the closed municipal solid
waste (MSW) landfill. As presented on Drawing 1, topographic surface elevations at the facility range from
approximately 460 feet above mean sea level (AMSL) along the eastern portion of the closed MSW landfill
to approximately 350 feet AMSL on the southwestern side of the facility. The site is surrounded
predominately by wooded, agricultural, or rural residential properties.
The Moore County Landfill is situated on approximately 314 acres and is composed of two main solid waste
disposal areas: the closed unlined MSW Landfill located on the eastern side of the facility (comprising
approximately 60 acres) and the active Construction and Demolition (C&D) Landfill located on the western
side of the facility. In conjunction with Moore County, Republic Services of NC, LLC operates a solid waste
transfer station located on the southwestern portion of the property. Several smaller Land Clearing and
Inert Debris (LCID) landfill units are also present at the facility.
Although the MSW facility is currently monitored under title 15A NCAC 13B .600 Rules, at the request of
the NC DEQ, the facility voluntarily commenced a corrective action program, specifically Monitored Natural
Attenuation (MNA), due to groundwater impacts from volatile organic compounds (VOCs) at the closed
unlined MSW landfill by submitting and implementing an Assessment of Corrective Measures (ACM) in
2005. The County also monitors water quality at the active C&D landfill in accordance with Title 15A of the
North Carolina Administrative Code (NCAC) 13B.0600 and the facility’s approved modified Water Quality
Monitoring Plan (WQMP). The County recently submitted an Assessment Monitoring Work Plan in
response to the NC DEQ correspondence received on September 28, 2017 which was approved by NC
DEQ on January 23, 2018.
The Moore County MSW Landfill began accepting solid waste in 1968 and the facility stopped accepting
waste before October 9, 1993. The final closure was approved by NC DEQ in December 1996 and the

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County expressed their intent to comply with post-closure monitoring regulations in January 1997. In 1993,
a transfer station was constructed adjacent to the Moore County Landfill to handle the County’s solid waste
stream. In September of 1993, Moore County entered into an agreement with Uwharrie Environmental,
Inc. which later became Republic Services of North Carolina, LLC, granting the private company operation
responsibilities at its transfer station. After closure of the MSW landfill in 1993, the County opened a C&D
landfill under the existing solid waste permit #63-01. The County temporarily stockpiled C&D waste from
approximately 1993 to 1996, until the current landfill C&D landfill was permitted and constructed. The
County is currently still managing the C&D and LCID waste streams generated within Moore County and
currently operates the C&D landfill, which is located immediately west of the closed MSW landfill.
3.0 COMPLIANCE MONITORING NETWORK AND HISTORY
Currently, the County monitor’s methane quarterly at 11 compliance methane monitoring locations (GP-9,
GP-10, GP-11, GP-12, GP-13, GP-14, GP-15, GP-16, GP-17, MW-6, and MW-15) located around the MSW
landfill and C&D landfills. The County monitors 4 structures (the scale-house, the maintenance shop, and
the transfer station) on County property in close proximity to the MSW or C&D landfills. At the request of
NC DEQ following a meeting on March 10, 2016, the County also monitors the crawl space on an offsite
structure located on the Blake property adjacent to the MSW landfill due to off-site methane migration
concerns. Historical results from the quarterly methane monitoring are shown on Table 1 of this report.
In accordance with the recommendation in the ACM, twelve (GV-1 through GV-12) passive landfill gas
trench vents were installed in waste on the northern side of the MSW landfill. This network of passive
landfill gas trench vents was expanded in 2007 (GV-13 through GV-24). Additionally, three in-waste
passive gas vents (GV-30, GV-31, and GV-32) were installed in February 2014 as part of the Contingency
Plan Update and Implementation Plan-Revised approved by NC DEQ on June 5, 2013.
Historically, the in-waste passive gas trench vents have performed only marginally while the three in-waste
passive gas vents installed in February 2014 have performed well at removing LFG from the MSW landfill
unit. It is believed that the in-waste passive gas trenches were not dug deep enough to prevent gas
migration because they do not reach the water table. Off-site migration is likely to the north onto the Blake
property based on methane concentrations detected at MW-15. However, the residence located on that
property is currently uninhabited based on information provided by the County.
4.0 REMEDIATION PLAN SUMMARY
This Plan has been prepared to describe the landfill gas remediation program for the Moore County Landfill.
The purposes of this Plan are to:
 Prescribe a remedy to remediate landfill gas to concentrations that are below the compliance limit
and to mitigate the risks of off-site methane migration (specifically along the northern property
boundary),

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 Provide NC DEQ with a description of the equipment and procedures that will be used to remediate
the methane gas exceedances,
 And, to layout a milestone timeline of activities and evaluation of the prescriptive remedy.
5.0 REMEDIATION PHASES
Proposed remediation activities for addressing the elevated methane concentrations observed in the vicinity
of impacted methane compliance locations along the northern property boundary are discussed below.
5.1 Ongoing Presumptive Remedies
The County will continue to maintain the MSW waste unit cap as part of the post-closure care activities.
These improvements will include filling in low spots that collect standing water, which prevent methane from
venting and also increase leachate generation. Other improvements include re-seeding as needed to
stabilize the slope. The County will continue to monitor the cap and need for improvements.
5.2 Installation of Cut-Off Trench (in the area of MW-15)
The County proposes to bid and contract the installation of a cut-off trench between the waste unit and the
property line as shown on Drawing 2. The proposed trench is to be approximately 200 feet long and 2 to 4
feet wide and will be located as shown on Drawing 2. The trench will be dug to an average depth of 20 to
25 feet below ground surface to extend to the depth to the water table.
The back wall of the trench will be lined with an impermeable barrier and backfilled with stone. Perforated
4 to 6-inch polyvinyl chloride (PVC) or high density polyethylene (HDPE) pipe will be installed approximately
4 feet below ground surface along the length of the excavation. Non-perforated 4 to 6-inch PVC or HDPE
pipe will be attached to the perforated pipe and extend above ground to vent accumulated landfill gas. A
vent located 50 feet from each end of the trench will be installed. The vents will be topped by passive wind-
driven turbine vents. The upper 2 feet of the excavation will be backfilled with a relatively impermeable soil.
A detail of the construction of the cut-off trench is shown on Drawing 3.
The installation of the proposed cut-off trench will be implemented as outlined in Section 6.0. Routine
quarterly methane monitoring will continue on a quarterly basis to monitor methane trends.
If methane concentrations in MW-15 remain above the LEL in compliance points along the northern facility
boundary after the trench has been installed according to the schedule presented on in Section 6.0 a new
remedy will be assessed and an addendum to this LFG Remediation Plan will be submitted. If the trench
is successful in the area of MW-15 a separate trench will be evaluated for installation in the area of MW-6.
If the trench is unsuccessful in eliminating the LEL exceedances at MW-15 after six months, a more active
remedy will be evaluated.

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5.3 Quality Assurance
As Moore County’s consultant Golder has proposed to assist the County with construction Quality
Assurance (CQA) of the LFG trench. The contractor selected to construct the LFG trench will demonstrated
experience in the construction of landfill gas control systems. CQA will include the observation of gas
trench digging and construction; preparation of construction logs and as-built documentation; preparation
of field notes; photographic documentation; and preparation of a construction completion report. The
construction completion report will be submitted to NC DEQ following the completion of construction and in
accordance with the schedule in outlined in Section 6.0.
6.0 CONCLUSIONS
This LFG Remediation Plan has been prepared in response to continued detections of methane above the
LEL in compliance methane monitoring locations at the Moore County landfill. The County will continue to
attempt to acquire buffer property to the north in addition to the remedial measures presented herein. The
proposed schedule is outlined below.
Action Item: Target Date:
Finalize Design and Solicit Bids March 15, 2018
Bid Selection April 15, 2018
Commence Trench Construction July 15, 2018
Complete Trench Construction September 15, 2018
Construction Completion Report Submittal November 15, 2018
Evaluation of the Trench Remedy May 15, 2019
Submit Revised LFG Remediation Plan (if necessary) December 31, 2019
Implement Expanded or New LFG Remedy (if necessary) March 31, 2020

TABLES

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Methane (%)Scale-house Maint. Shop Transfer Station
Blake Crawlspace GP-9 GP-10 GP-11 GP-12 GP-13 GP-14 GP-15 GP-16 GP-17 MW-6 MW-15 GV-1 GV-2 GV-3 GV-4 GV-5 GV-6 GV-7 GV-8 GV-9 GV-10 GV-11 GV-12 GV-13 GV-14 GV-15 GV-16 GV-17 GV-18 GV-19 GV-20 GV-21 GV-22 GV-23 GV-24 GV-25 GV-26 GV-27 GV-28 GV-29 GV-30 GV-31 GV-32
12-Mar-00 ------------------0.4%0.0%--0.2%--------------------------------------------------------------------30-Apr-01 ----------43.0%------------29.0%--------------------------------------------------------------------23-Aug-01 ----------5.0%------5.0%--------------------------------------------------------------------------13-Dec-01 ----------28.2%------7.9%----0.4%--------------------------------------------------------------------
27-Mar-02 ----------11.0%------------0.4%--------------------------------------------------------------------
3-Jun-02 ----------8.0%----------------------------------------------------------------------------------
19-Sep-02 ----------5.0%----------------------------------------------------------------------------------
10-Dec-02 ----------45.0%------------8.0%--------------------------------------------------------------------
17-Apr-03 --------0.2%63.8%0.3%0.3%0.3%8.8%0.4%0.3%0.3%--------------------------------------------------------------------
20-Jun-03 ----------55.7%------20.2%0.8%--1.3%--------------------------------------------------------------------29-Sep-03 ------------------7.9%--------------------------------------------------------------------------27-Dec-03 ----------58.1%0.4%----------0.3%14.1%21.7%----------------------------------------------------------------26-Mar-04 ----------60.0%------4.1%------34.3%55.3%----------------------------------------------------------------
19-May-04 ----------64.3%------1.1%----0.3%45.0%58.4%----------------------------------------------------------------
30-Nov-04 ----------45.4%------0.2%------18.3%39.1%0.4%----0.3%--------25.8%17.5%--------------------------------------------
24-Feb-05 ----------51.7%------7.8%------26.7%60.0%------------------17.5%--------------------------------------------
19-Apr-05 ----------59.4%------11.6%------53.1%59.5%----------------------------------------------------------------
29-Sep-05 ----------46.7%------9.7%------24.1%56.7%0.4%8.1%----0.2%3.4%------22.4%14.0%------------------------------------------31-Jan-06 ----------------------------------------------------------------------------------------------29-Mar-06 ----------63.6%0.1%----17.4%------23.7%58.3%----------------0.9%------------------------------------------21-Jun-06 ----------25.1%--------------14.4%31.1%0.4%------------------3.8%5.7%----------------------------------------
20-Sep-06 ----------49.9%------------0.7%0.1%21.2%10.9%----9.7%0.1%------6.9%8.2%--------------------------------------------
29-Nov-06 ----------42.0%------27.5%3.3%----56.2%56.8%--------------------14.7%22.3%----------------------------------------
25-May-07 ----------52.7%------12.1%6.3%----8.9%56.3%----------------------6.2%----------------------------------------
8-Aug-07 0.0%0.0%0.0%--0.0%5.1%----------------50.8%5.6%1.5%--1.3%11.7%3.2%----3.4%7.1%14.9%25.1%----------------------------------------
1-Nov-07 0.0%0.0%0.0%--0.0%23.6%0.0%0.0%0.0%17.0%1.4%0.0%0.0%34.4%60.0%2.2%0.0%0.0%0.0%0.0%0.0%0.0%0.0%9.3%0.0%0.0%0.0%60.0%0.0%0.0%50.7%2.4%0.0%0.0%31.6%46.0%3.7%0.0%1.3%----------------21-Apr-08 0.2%0.2%0.2%--0.1%31.6%0.1%0.1%0.2%0.2%0.2%0.2%0.1%0.1%55.6%0.3%0.1%0.1%0.2%0.2%0.1%0.1%0.1%0.2%0.1%5.1%0.2%1.0%0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%0.2%----------------29-Aug-08 0.0%0.0%0.0%--0.0%0.0%0.0%0.0%--0.5%10.7%0.0%0.6%29.0%56.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%11.2%5.8%0.0%0.0%37.7%5.8%14.3%0.0%0.0%0.0%2.4%0.1%18.7%0.0%0.0%1.3%----------------6-Oct-08 0.0%0.0%0.0%--0.0%31.1%0.0%0.6%0.0%0.0%0.0%0.0%0.0%0.0%56.5%2.7%0.0%0.0%0.2%0.0%0.0%0.1%0.2%8.1%7.0%0.0%0.0%37.7%11.9%0.3%22.0%0.0%0.2%4.2%0.2%8.8%0.0%0.0%3.6%----------------
16-Jan-09 0.0%0.0%0.0%--0.0%0.0%0.2%0.0%0.0%0.0%0.2%0.0%0.0%0.2%0.0%0.0%0.0%0.0%0.1%0.0%0.1%0.1%0.0%0.4%0.0%0.1%0.0%0.0%0.0%0.0%0.0%0.0%0.2%0.1%0.0%0.0%0.1%0.0%0.0%----------------
13-Apr-09 0.0%0.0%0.0%--0.0%53.6%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.5%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%2.2%0.0%0.0%30.7%0.0%0.0%0.0%0.0%0.0%0.0%13.0%0.0%0.0%0.0%0.0%0.0%9.2%0.0%0.0%0.0%------
20-Aug-09 0.0%0.0%0.0%--0.0%0.6%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%3.5%0.0%0.0%1.9%0.0%0.0%0.0%0.0%0.0%0.0%0.0%1.6%0.0%0.0%9.6%0.0%0.0%0.0%0.0%10.5%1.4%0.0%0.0%4.0%19.0%8.2%4.6%0.0%0.0%------
13-Oct-09 0.0%0.0%0.0%--0.0%22.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%27.2%53.3%13.4%0.0%0.0%2.4%0.0%1.5%0.0%0.0%0.0%4.7%0.0%0.0%0.0%27.0%0.2%28.0%0.4%0.0%2.4%11.4%26.0%0.0%0.0%7.4%25.0%25.6%0.0%0.0%0.0%------
25-Feb-10 0.0%0.0%0.0%--0.0%38.9%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.7%34.3%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.2%0.0%0.8%0.0%11.9%0.6%0.7%0.0%0.0%0.0%0.0%0.0%1.9%0.0%0.0%0.0%12.2%1.4%2.9%0.4%0.0%------23-Aug-10 0.0%0.0%0.0%--0.0%30.6%0.0%0.0%0.0%0.0%0.0%0.0%0.0%14.9%59.4%3.9%0.0%0.3%0.0%0.0%0.0%0.0%0.0%0.1%14.4%0.0%0.0%51.1%56.6%38.9%0.1%--0.0%3.1%10.4%19.4%0.2%0.0%9.0%54.0%33.8%40.9%14.6%0.2%------21-Oct-10 0.0%0.0%0.0%--0.0%35.7%0.0%0.0%0.0%0.0%0.0%0.0%0.0%40.6%59.2%5.3%0.0%0.1%0.1%0.1%0.0%0.0%0.0%0.0%5.0%0.0%0.0%58.1%36.7%30.9%20.0%0.0%0.8%0.1%1.6%7.9%0.0%0.0%5.9%39.7%33.9%16.5%0.0%0.0%------23-Feb-11 0.0%0.0%0.0%--0.0%24.7%0.0%0.0%0.0%0.0%0.0%0.0%0.0%8.5%0.5%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%1.9%0.0%0.0%0.0%0.0%0.0%1.1%1.7%3.6%0.0%0.0%0.0%5.0%0.0%4.5%0.8%0.0%------
18-Apr-11 0.0%0.0%0.0%--1.6%29.8%0.1%0.0%0.0%0.0%0.0%0.0%0.0%15.7%27.5%0.0%0.0%0.0%0.2%0.1%0.0%0.0%0.0%0.0%0.5%0.0%0.0%0.1%4.7%0.2%4.5%0.3%0.0%0.3%0.4%3.7%0.0%0.0%0.6%37.4%0.1%23.3%0.0%0.0%------
11-Aug-11 0.0%0.0%0.0%--0.0%0.6%0.3%0.0%0.0%0.2%0.0%--0.0%0.8%21.0%6.1%0.0%0.0%1.8%0.0%0.0%0.0%0.0%0.3%0.0%0.0%0.0%27.2%0.0%0.2%0.0%0.0%2.3%0.0%23.6%0.0%0.2%0.0%3.3%38.7%0.0%21.3%0.0%0.0%------
10-Oct-11 0.0%0.0%0.0%--0.0%18.6%0.0%0.0%0.0%9.8%0.0%0.0%1.5%30.1%58.5%5.8%0.1%0.0%0.0%0.0%0.0%0.0%0.4%7.5%3.5%0.0%0.0%29.2%15.6%0.0%0.0%0.0%0.0%1.7%10.9%17.5%0.0%0.0%0.0%29.2%14.9%14.8%0.0%0.0%------
1-Feb-12 0.0%0.0%0.0%--0.2%26.4%0.0%0.0%0.0%0.2%1.4%0.0%0.0%34.6%52.3%0.2%0.1%0.1%0.0%0.0%0.0%0.0%0.0%0.0%1.7%0.0%0.0%0.0%0.0%0.0%0.0%0.0%2.0%0.0%0.0%3.6%0.0%0.0%0.0%24.6%11.2%2.1%0.0%24.9%------
18-Apr-12 0.0%0.0%0.0%--0.0%32.8%0.0%0.0%0.0%0.0%0.0%0.0%0.5%34.0%56.7%4.5%0.1%0.0%1.1%0.1%0.0%0.0%0.1%0.6%0.1%18.8%0.0%36.0%0.1%13.7%0.3%0.6%0.1%3.7%1.7%0.0%0.0%0.1%5.8%20.2%22.5%0.2%14.0%0.1%------
13-Aug-12 0.0%0.0%0.0%--0.0%26.7%0.0%0.0%0.0%19.6%0.0%--2.8%29.8%58.2%0.0%0.0%0.0%0.9%0.0%0.0%0.0%0.0%0.0%3.6%0.0%0.0%0.0%9.1%0.0%0.0%0.0%13.8%0.0%0.2%6.8%0.0%0.0%0.0%54.1%0.0%0.0%--36.9%------11-Oct-12 0.0%0.0%0.0%--0.0%27.7%0.0%0.0%0.0%0.0%0.1%0.0%1.9%9.3%10.3%0.0%0.5%0.0%0.0%0.0%0.0%0.0%0.0%0.3%10.8%4.5%0.0%18.1%4.4%0.0%0.0%0.4%0.6%0.0%5.6%10.8%0.0%0.0%0.0%40.6%10.6%0.9%0.0%42.8%------14-Jan-13 0.0%0.0%0.0%--0.7%30.2%0.4%0.0%0.0%1.8%0.2%0.0%2.2%53.1%58.9%0.0%0.0%1.0%0.0%0.0%0.9%0.8%0.6%0.4%0.6%18.0%0.8%1.6%0.8%5.0%1.0%0.4%3.0%0.0%0.9%5.3%0.0%0.5%0.0%59.7%6.0%2.1%0.8%23.2%------16-Apr-13 0.0%0.0%0.0%--0.0%45.0%0.0%0.0%0.0%0.0%0.0%0.0%0.1%12.8%18.3%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.1%0.0%34.9%0.0%51.7%19.6%0.0%0.0%0.0%3.0%6.8%11.2%0.0%0.0%0.0%9.7%62.3%13.1%0.0%1.3%30.1%------
30-Jul-13 0.0%0.0%0.0%--0.2%59.1%0..2%0.2%0.2%23.1%0.2%0.2%6.9%36.5%57.9%10.5%--0.1%1.9%0.0%0.1%0.0%0.0%0.3%8.9%31.6%0.0%26.3%9.4%0.1%0.1%0.0%0.8%4.5%32.3%1.3%18.9%0.0%0.0%58.7%11.8%0.1%0.0%56.7%------
1-Oct-13 0.0%0.0%0.0%--0.0%49.8%0.0%0.0%0.0%11.4%0.0%0.0%5.6%11.8%64.8%0.0%--0.0%0.0%0.0%0.0%0.0%0.1%0.0%0.0%0.0%0.0%0.0%0.0%14.5%13.8%0.8%0.0%0.0%0.0%8.4%0.0%0.0%6.5%37.8%6.9%27.8%0.0%12.5%------
11-Feb-14 0.0%0.0%0.0%--0.0%0.4%0.0%0.0%0.0%0.0%0.0%2.0%0.5%0.0%0.2%0.7%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.2%0.0%0.0%0.0%2.0%0.0%0.0%0.0%0.0%0.0%0.0%0.3%0.0%0.0%0.0%0.3%30.1%1.4%0.1%0.0%0.1%------
17-Apr-14 0.0%0.0%0.0%--0.0%40.6%0.0%0.0%0.0%0.0%0.0%0.0%0.0%4.8%0.5%0.3%0.0%0.0%0.0%0.0%0.0%0.0%0.0%2.6%0.0%0.3%0.0%0.0%0.0%2.8%0.0%0.0%0.0%0.0%0.4%0.2%0.0%0.0%0.0%12.6%2.6%0.3%0.7%8.2%35.8%38.5%6.8%
25-Aug-14 0.0%0.0%0.0%--0.0%21.2%0.0%0.0%0.0%0.0%0.0%0.0%0.0%10.7%54.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%6.5%0.0%2.2%0.0%15.9%0.0%0.0%0.0%0.0%0.0%2.2%6.3%0.8%0.0%0.0%0.0%12.3%36.8%0.0%0.0%0.0%32.6%37.9%5.2%16-Oct-14 0.0%0.0%0.0%--0.0%38.1%0.0%0.0%0.0%0.0%0.0%0.0%2.3%42.3%58.3%1.9%0.0%0.1%0.0%0.0%0.1%0.1%0.0%0.0%5.9%0.0%0.1%0.0%0.0%0.1%0.0%0.0%1.5%0.2%0.0%9.4%0.0%0.0%0.0%50.0%2.2%1.3%0.1%29.0%58.5%58.1%58.1%16-Jan-15 0.0%0.0%0.0%--0.0%21.6%0.0%0.0%0.0%0.2%11.2%0.0%0.0%17.4%55.9%0.1%0.0%0.1%0.1%0.1%0.1%0.1%0.1%1.4%5.5%0.0%0.0%1.2%0.1%0.1%0.0%0.0%0.0%3.8%10.3%0.0%0.0%0.0%0.0%52.9%1.1%0.1%0.1%27.2%51.7%40.0%57.0%21-Apr-15 0.0%0.0%0.0%--0.0%43.6%0.0%0.0%0.0%0.0%27.7%0.0%0.0%1.5%0.7%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.2%0.0%0.0%1.4%0.0%1.1%0.0%0.0%0.8%0.2%0.0%0.2%0.0%0.0%0.0%12.8%0.8%0.0%0.0%8.5%59.8%56.5%11.4%
17-Aug-15 0.0%0.0%0.0%--0.0%0.0%0.0%0.0%0.0%0.2%0.1%0.0%0.0%0.5%51.8%0.1%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.5%0.1%0.0%0.0%0.8%0.0%0.1%0.0%3.1%3.2%0.0%5.0%20.4%0.0%0.0%0.3%0.6%0.0%0.1%0.0%0.0%58.6%52.7%58.8%
28-Jan-16 0.0%0.0%0.0%--0.1%53.7%0.0%0.1%0.1%0.1%0.1%0.1%0.1%22.0%49.6%0.0%0.0%0.0%0.0%0.1%0.1%0.1%0.0%4.7%0.1%0.1%0.1%20.5%0.1%0.1%0.1%0.1%0.1%13.2%0.1%13.7%0.0%--0.0%60.8%4.7%1.9%0.1%55.5%62.5%59.0%62.0%11-Apr-16 0.0%0.0%0.0%0.0%0.0%52.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%14.8%10.6%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%1.3%0.0%0.0%0.0%0.0%1.1%5.4%0.0%0.2%0.0%0.4%6.2%0.0%0.0%0.0%0.0%0.0%0.0%0.0%3.3%60.2%18.0%51.0%5-Aug-16 0.0%0.0%0.0%0.0%0.2%31.0%0.2%0.2%0.2%0.2%1.2%0.2%2.5%1.1%60.2%0.4%0.5%0.0%0.0%0.1%0.1%0.1%0.1%0.7%0.2%0.2%16.3%20.5%0.3%0.3%0.2%0.1%0.1%1.5%14.6%0.1%0.1%0.1%0.1%35.1%4.8%0.2%15.4%0.2%53.1%26.8%59.3%2-Dec-16 0.0%0.0%0.0%0.0%0.0%8.3%0.0%0.0%0.0%0.0%0.0%0.0%0.0%4.0%0.7%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.6%0.9%0.0%0.0%7.8%0.0%0.0%0.0%0.0%0.0%0.8%0.0%1.3%0.0%0.0%0.0%0.3%0.4%0.1%0.0%0.8%25.5%15.7%13.4%9-Feb-17 0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.7%0.0%0.0%0.0%0.0%0.0%0.1%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%6.1%40.4%0.0%12-Apr-17 0.0%0.0%0.0%0.0%0.0%25.3%0.0%0.0%0.0%0.0%0.0%0.0%0.4%14.5%29.1%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%6.7%0.0%0.0%1.9%0.0%6.8%0.0%0.0%0.0%5.7%6.8%0.0%0.0%0.0%0.0%50.7%1.5%0.0%0.0%51.7%58.9%58.1%58.0%16-Aug-17 0.0%0.0%0.0%0.0%0.0%1.4%0.0%0.0%0.0%0.0%0.0%0.0%1.6%0.6%28.9%0.0%0.0%0.1%0.0%0.0%2.3%2.9%0.0%0.0%0.3%0.0%7.3%35.4%0.0%0.0%0.0%0.0%0.6%3.8%2.1%0.0%0.0%0.0%0.0%47.5%0.0%0.0%3.5%23.4%44.8%44.3%45.1%
12-Dec-17 0.0%0.0%0.0%0.0%0.0%21.2%0.0%0.0%0.0%0.0%0.0%0.0%0.0%3.1%9.1%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%9.6%0.0%0.0%0.6%0.0%12.3%0.0%0.0%0.1%1.1%12.8%7.3%0.0%0.0%0.0%0.0%57.8%0.0%1.8%0.1%48.6%58.0%58.1%57.9%22-Jan-18 0.0%0.0%0.0%0.0%0.0%12.2%0.0%0.0%0.0%0.0%0.0%0.0%0.0%44.2%53.5%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%0.0%1.0%0.3%0.0%0.0%0.0%10.1%0.0%0.0%0.0%7.8%4.8%0.0%0.0%0.0%0.0%57.0%0.0%15.1%11.0%55.7%58.9%60.3%59.0%
Notes:- All probes except GV probes installed March 2000.
- GV 1-12 installed in November 2004. GV 13-24 installed
in November 2007. GV 25-29 installed in February 2009.
Lower explosive limit of methane gas:5%
Upper explosive limit of meathane gas:15%
Indicates methane gas levels between upper and lower explosive limit.
Indicates methane gas levels above upper explosive limit.
All data recorded prior to 08/08/2007 supplied by HDR.
--May indicate a reading of zero OR no record.
Historical Summary Table
Methane
Moore County, North Carolina
G:\PROJECTS\Moore County\Groundwater\2018 Corrective Action\LFG\Table 1.xlsx

DRAWINGS

Caption Text Caption Text Caption Text
CATCH
BASIN
CATCH
BASIN i3
i2
i1
GP-10
CLOSED
MSW
LANDFILL
ACTIVE
C&D
LANDFILL
SW-2
SW-4
SW-3
SW-1
TO GP-9
SB-5
3953953
6
5360 37038037538539039038537538037036535536040035
5
400MW-7384.69
MW-4360.00
365.69MW-16S
365.50MW-16D
GP-12
357.27MW-3
367.06MW-2
381.18MW-1
382.23MW-9
382.02MW-8
MW-13S373.25MW-13D372.53
382.18MW-14
387.69MW-6
MW-11D371.85
MW-11S370.68
MW-5375.99
MW-15397.17
PW-1
SB-2
GP-15
GP-16
GP-14
GP-13
GP-11
GP-17
GP-10
SB-3 SB-4
CONSULTANT
DESIGN
PREPARED
REVIEW
APPROVED
YYYY-MM-DD TITLE
PROJECT No.Rev.
PROJECTCLIENT
Path: \\greensboro\CAD\_2007\0739615 - Moore\PRODUCTION\_D - 2017 GW Report\ | File Name: 0739615015D001.dwgIF THIS MEASUREMENT DOES NOT MATCH WHAT IS SHOWN, THE SHEET SIZE HAS BEEN MODIFIED FROM: ANSI D01 in0739615016 PHASE100 DRAWING10
2016-07-07
BSD
TJM
BSD
RPK
MOORE COUNTY LANDFILL
PERMIT NO. 63-01
ABERDEEN, NORTH CAROLINA
MOORE COUNTY
GROUNDWATER SURFACE CONTOUR MAP
APRIL 11, 2017
PERENNIAL STREAM
INTERMITTENT STREAM
EPHEMERAL STREAM
POND AND WETLAND LIMITS
EXISTING 10 FT GROUND SURFACE CONTOUR
EXISTING 2 FT GROUND SURFACE CONTOUR
PROPERTY LINE
APPROXIMATE LIMITS OF WASTE
EXISTING ROAD
POTENTIOMETRIC GROUNDWATER CONTOURS (5 FT. INTERVAL)
GROUNDWATER FLOW SEGMENTS
MONITORING WELL AND IDENTIFICATION
METHANE PROBE AND IDENTIFICATION
SURFACE WATER MONITORING POINT AND IDENTIFICATION
LANDFILL GAS TRENCH VENTS AND IDENTIFICATION
PASSIVE LANDFILL GAS VENTS
PRIVATE WELL LOCATION AND IDENTIFICATION
WETLAND AREA
SOIL SAMPLE LOCATIONS
LEGEND
NOTES
1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET
2. GROUNDWATER SURFACE CONTOUR INTERVAL = 5 FEET
3. GROUNDWATER ELEVATIONS MEASURED ON APRIL 11, 2017.
4. GROUNDWATER CONTOURS BASED ON LINEAR INTERPOLATION BETWEEN AND
EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD
CONDITIONS. THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL
CONDITIONS.
5. GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION. THESE
CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A
CONSTANT ELEVATION ABOVE SEA LEVEL. THE GROUNDWATER FLOW DIRECTION IS
GENERALLY PERPENDICULAR TO THE GROUNDWATER SURFACE CONTOURS, SIMILAR TO THE
RELATIONSHIP BETWEEN SURFACE WATER FLOW AND TOPOGRAPHIC CONTOURS.
6. PROPERTY BOUNDARY SURVEY BY JAMES L. WRIGHT DATED NOVEMBER 1984. ITS LOCATION
IS RELATIVE TO TOPOGRAPHY APPROXIMATE BY HDR ENGINEERING, INC.
7. EXISTING TOPOGRAPHY WITHIN ACTIVE AND PROPOSED LANDFILL PROVIDED BY MATTHEWS
LAND SURVEYING & MAPPING, PLLC DATED APRIL 17, 2015.
8. MONITORING WELLS MW-1 THROUGH MW-5 SURVEYED JUNE 1987 BY S&ME, INC. MONITORING
WELLS MW-6 THROUGH MW-16 SURVEYED APRIL 1995, SEPTEMBER 1996, AND APRIL 2003 BY
HDR ENGINEERING INC./ ED BUCKNER RLS APRIL 17, 2015.
9. THE LOCATIONS OF LANDFILL GAS TRENCH VENTS ARE APPROXIMATE.
10. GROUNDWATER WELLS MW-11D, MW-13D, AND MW-16D ARE NOT SCREENED IN THE SHALLOW
AQUIFER AND ELEVATION DATA WERE NOT USED IN THE CONSTRUCTION OF GROUNDWATER
CONTOURS.
11. A STREAM DETERMINATION WAS CONDUCTED ON APRIL 17, 2013 BY A GOLDER ASSOCIATES
NC, INC. REPRESENTATIVE. THE STREAM DETERMINATION WAS CONDUCTED USING NCDWQ'S
"METHODOLOGY FOR IDENTIFICATION OF INTERMITTENT AND PERENNIAL STREAMS AND
THEIR ORIGINGS, VERSION 4.11".
381.18MW-1
GP-10
SW-1
PW-1
385
SITE LOCATION MAP
NOT TO SCALE
SITE LOCATION
0
FEET
200 400
SCALE
SB-2
CATCH
BASIN
CATCH
BASIN
GP-10
CLOSED
MSW
LANDFILL
ACTIVE
C&D
LANDFILL
SW-2
SW-4
SW-3
SW-1
TO GP-9
MW-7
MW-4
MW-16S
MW-16D
GP-12
MW-3
MW-2
MW-1
MW-9
MW-8
MW-13S
MW-13D
MW-14
MW-6
MW-11D
MW-11S
MW-5
MW-15
PW-1
GP-15
GP-16
GP-14
GP-13
GP-11
GP-17
GP-10
CONSULTANT
DESIGN
PREPARED
REVIEW
APPROVED
YYYY-MM-DD TITLE
PROJECT No.Rev.
PROJECTCLIENT
Path: \\greensboro\CAD\_2007\0739615 - Moore\PRODUCTION\_G - 2018 LFG Remediation Plan\ | File Name: 073961501G002.dwgIF THIS MEASUREMENT DOES NOT MATCH WHAT IS SHOWN, THE SHEET SIZE HAS BEEN MODIFIED FROM: ANSI D01 in0739615017 PHASE404 DRAWING20
2016-07-07
BSD
TJM
BSD
RPK
MOORE COUNTY LANDFILL
PERMIT NO. 63-01
ABERDEEN, NORTH CAROLINA
MOORE COUNTY
LANDFILL GAS REMEDIATION PLAN LAYOUT
PERENNIAL STREAM
INTERMITTENT STREAM
EPHEMERAL STREAM
POND AND WETLAND LIMITS
EXISTING 10 FT GROUND SURFACE CONTOUR
EXISTING 2 FT GROUND SURFACE CONTOUR
PROPERTY LINE
APPROXIMATE LIMITS OF WASTE
EXISTING ROAD
MONITORING WELL AND IDENTIFICATION
METHANE PROBE AND IDENTIFICATION
SURFACE WATER MONITORING POINT AND IDENTIFICATION
LANDFILL GAS TRENCH VENTS AND IDENTIFICATION
PASSIVE LANDFILL GAS VENTS
PRIVATE WELL LOCATION AND IDENTIFICATION
WETLAND AREA
APPROXIMATE LOCATION OF METHANE CUT-OFF TRENCH
LEGEND
NOTES
1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET
2. PROPERTY BOUNDARY SURVEY BY JAMES L. WRIGHT DATED NOVEMBER 1984. ITS LOCATION
IS RELATIVE TO TOPOGRAPHY APPROXIMATE BY HDR ENGINEERING, INC.
3. EXISTING TOPOGRAPHY WITHIN ACTIVE AND PROPOSED LANDFILL PROVIDED BY MATTHEWS
LAND SURVEYING & MAPPING, PLLC DATED APRIL 17, 2015.
4. MONITORING WELLS MW-1 THROUGH MW-5 SURVEYED JUNE 1987 BY S&ME, INC. MONITORING
WELLS MW-6 THROUGH MW-16 SURVEYED APRIL 1995, SEPTEMBER 1996, AND APRIL 2003 BY
HDR ENGINEERING INC./ ED BUCKNER RLS APRIL 17, 2015.
5. THE LOCATIONS OF LANDFILL GAS TRENCH VENTS ARE APPROXIMATE.
6. GROUNDWATER WELLS MW-11D, MW-13D, AND MW-16D ARE NOT SCREENED IN THE SHALLOW
AQUIFER AND ELEVATION DATA WERE NOT USED IN THE CONSTRUCTION OF GROUNDWATER
CONTOURS.
7. A STREAM DETERMINATION WAS CONDUCTED ON APRIL 17, 2013 BY A GOLDER ASSOCIATES
NC, INC. REPRESENTATIVE. THE STREAM DETERMINATION WAS CONDUCTED USING NCDWQ'S
"METHODOLOGY FOR IDENTIFICATION OF INTERMITTENT AND PERENNIAL STREAMS AND
THEIR ORIGINGS, VERSION 4.11".
MW-1
GP-10
SW-1
PW-1
SITE LOCATION MAP
NOT TO SCALE
SITE LOCATION
0
FEET
200 400
SCALE
AA'PROPOSED TRENCH AND VENT SYSTEM
CROSS SETION A-A'
NOT TO SCALE
NOTES:
1. NON-PERFORATED 4 OR 6" PIPE INSTALLED ON BOTH ENDS OF PASSIVE
VENT SYSTEM.
PROPOSED LANDFILL GAS
REMEDIATION TRENCH DETAIL
NOT TO SCALE
NOTES:
1. NEAR-SURFACE HORIZONTAL EXTENSION OF PLASTIC BARRIER AND
SURFICIAL SOIL CAP OMITTED FOR CLARITY.01 in0739615017 PHASE404 DRAWING30
2018-01-29
BSD
BSD
DYR
RPK
MOORE COUNTY CLOSED MSW LANDFILL
PERMIT # 63-01
MOORE COUNTY
LANDFILL GAS REMEDIATION PLAN DETAILS
TITLE
PROJECT NO.REV.
PROJECTCLIENT
CONSULTANT
PREPARED
DESIGNED
REVIEWED
APPROVED
YYYY-MM-DD IF THIS MEASUREMENT DOES NOT MATCH WHAT IS SHOWN, THE SHEET SIZE HAS BEEN MODIFIED FROM: ANSI BPath: \\greensboro\CAD\_2007\0739615 - Moore\PRODUCTION\_G - 2018 LFG Remediation Plan\ | File Name: 0739615017G003.dwg

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