6002_HolbrooksRdMSWLF_LFGMP_DIN28225_20170706

Landfill Gas Monitoring Plan

Holbrooks Road Closed MSW Landfill Facility
Huntersville, North Carolina

Prepared for:

Mecklenburg County
Charlotte, North Carolina

June 2017

© 2017 Smith Gardner, Inc.
This document is intended for the sole use of the client for which it was prepared and
for the purpose agreed upon by the client and Smith Gardner, Inc.

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This Landfill Gas (LFG) Monitoring Plan (plan) was prepared by Smith Gardner, Inc. (S+G) to
describe the LFG monitoring program for Mecklenburg County’s closed municipal solid waste
(MSW) landfill (NC Solid Waste Permit 60-02), located on Holbrooks Road in Huntersville, North
Carolina. This facility includes a closed unlined MSW landfill. This plan describes the
necessary procedures to satisfy applicable regulatory requirements (Section 1.1) for landfill gas
monitoring.

The Engineer has utilized the best available site data, practices, experience, and judgment to
develop this plan. However, the plan may require modifications over time to accommodate
changing landfill conditions, changing receptors in areas adjacent to and around the landfill, or
other conditions that cannot be fully anticipated.

Uncontrolled migration of LFG (particularly methane (CH4)) can result in loss of life, injury,
property loss, vegetative damage, and intolerable odors. Landfill monitoring includes exposure
to explosive gases. Monitoring personnel should be specifically trained in the management and
response for situations such as fire or explosion and confined space entry and possess an
awareness of changing conditions around the landfill.

Note that this plan does not address landfill gas collection and control (beyond passive venting),
air quality, or other related landfill gas regulations or requirements which may be applicable to
this site at present or in the future.

Rule 15A NCAC 13B.0503(2) of the North Carolina Solid Waste Management Rules
requires the following for MSW landfill facilities:

A site shall meet the following design requirements:
(a) The concentration of explosive gases generated by the site shall not
exceed:
(i) twenty-five percent of the limit for the gases in site structures
(excluding gas control or recovery system components); and
(ii) the lower explosive limit for the gases at the property boundary.

This plan was developed generally following the Landfill Gas Monitoring Guidance
document prepared by the North Carolina Department of Environment and Natural
Resources (NC DENR), Division of Waste Management (DWM)1.

1 NC DENR DWM (2010), “Landfill Gas Monitoring Guidance”, NC DENR DWM Solid Waste Section,
November 2010.
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LEGEND
PROPERTY BOUNDARY (SEE REFERENCE 1)
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REFERENCES
PROPERTY LINES, MONITORING WELLS, AND STREAMS FROM
MECKLENBURG COUNTY GIS DEPARTMENT.
FROM DRAWING "GROUNDWATER MONITORING WELL AND
BORING LOCATION MAP" DATED MARCH 2010, SHEET S2 OF 19,
PREPARED BY BP BARBER.
FROM DRAWING "SITE MAP WITH WELL LOCATIONS" DATED
AUGUST 2013, FIGURE 1. PREPARED BY ENVIRO-PRO.
FLOOD ZONES SOURCED FROM NC ONE MAP GIS SERVICE.
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NORTH MECKLENBURG
C&D LANDFILL
HOLBROOKS ROAD LANDFILL
(CLOSED)
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SMITH
14 N. Boylan Avenue, Raleigh NC 27603
NC LIC. NO. F-1370 (ENGINEERING)
919.828.0577
GARDNER+
DRAWN:APPROVED:SCALE:DATE:PROJECT NO.:FIGURE NO.:FILE NAME:
PREPARED FOR:PREPARED BY:
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© 2017 Smith Gardner, Inc.
METHANE MONITORING REQUIREMENT
HOLBROOKS ROAD LANDFILL
MECKLENBURG COUNTY
NORTH CAROLINA
C.T.J.J.A.S.N.T.S.MECK 17-1 2 MECK-A0012May 2017
2.WITHIN 7 DAYS1.IMMEDIATELY 3.WITHIN 60 DAYS
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Client: Mecklenburg County
Project Number: Mecklenburg 17-1
Site Location: Holbrooks Road Closed Landfill
Boring Location: Sheet: 1 of 1
Drilling Method: 4.25" HSA Monitoring Well Installed: YES
Sample Type(s): none Boring Diameter: 8.5"Screened Interval: 10'- 30'
Weather: overcast, some sun & wind (60F)Logged By: MG Date Started: 03/01/17 Depth of Boring: 30'
Drilling Contractor: Geologic Explorations TOC Elevation: Date Finished: 03/01/17 Water Level: Not Encountered
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9.5
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19
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more compact starting at 20'
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Date Time
Checked by _________________________Date:________________
NOTES:
Depth to groundwater while drilling
BORING ID: HP-25
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MATERIALS: Color, size, range, MAIN COMPONENT, minor
component(s), moisture content, structure, angularity, maximum
grain size, odor, and Geologic Unit (If Known)
Monitoring Well Construction
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16 

NC Division of Waste Management - Solid Waste Section

Landfill Gas Monitoring Data Form

Notice: This form and any information attached to it are "Public Records" as defined in NC General Statute 132-1. As such,
these documents are available for inspection and examination by any person upon request (NC General Statute 132-6).

Facility Name: ______________________________________________ Permit Number: ____________________________

Date of Sampling: ___________________ NC Landfill Rule (.0500 or .1600): _____________________________________

Name and Position of Sample Collector: _________________________________________

Type and Serial Number of Gas Meter: _______________________________ Calibration Date of Gas Meter: ___________

Date and Time of Field Calibration: _____________________

Type of Field Calibration Gas (15/15 or 35/50): ____________ Expiration Date of Field Calibration Gas Canister: ________

Pump Rate of Gas Meter: _____________

Ambient Air Temperature: __________ Barometric Pressure: ______________ General Weather Conditions: _____________

Instructions: Under “Location or LFG Well” identify the monitoring wells or describe the location for other tests (e.g., inside
buildings). A drawing showing the location of test must be attached. Report methane readings in both % LEL and % methane
by volume. A reading in percent methane by volume can be converted to % LEL as follows: % methane by volume = %
LEL/20

If your facility has more gas monitoring locations than there is room on this form, please attach additional sheets listing the
same information as contained on this form.

Certification
To the best of my knowledge, the information reported and statements made on this data submittal and attachments
are true and correct. I am aware that there are significant penalties for making any false statement, representation, or
certification including the possibility of a fine and imprisonment.

_________________________________________ _________________________________________
SIGNATURE TITLE

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