1202_BurkeCountyEast_LFGRemediationReport_DIN26845_20160721

2211 W. Meadowview Road Boone Building, Suite 101 Greensboro, NC 27407 tel: [phone] fax: [phone] www.JoyceEngineering.com
July 21, 2016
Jaclynne Drummond
Compliance Hydrogeologist
Solid Waste Section, Division of Waste Management 1646 Mail Service Center Raleigh, NC 27699-1646

RE: Landfill Gas Remediation Report
East Burke Landfill (Permit #12-02) Burke County, North Carolina

Dear Ms. Drummond:
Joyce Engineering has prepared this letter report for the Landfill Gas Remediation
(LFGR) of the Burke County East Buke Closed Landfill (Permit #12-02) in accordance with North Carolina Solid Waste Management Regulations (NCSWMR) 15A NCAC 13B and the facility’s Landfill Gas Monitoring Plan (LFGMP). This LFGR report is presented in fulfillment
of Landfill Gas Remediation Plans approved by the North Carolina Department of
Environmental Quality (NCDEQ), Solid Waste Section (SWS) on September 18, 2015 for the
closed East Burke landfill.
BACKGROUND INFORMATION
The East Burke Sanitary Landfill, Permit No. 12-02, is a closed, unlined municipal solid
waste (MSW) landfill located off of Rhodhiss Road approximately four miles south of Granite
Falls, North Carolina. The landfill operated as Burke County’s landfill between 1972 and 1988
and has been closed to waste disposal since 1988.
The landfill is regulated under Rules .0500 and .0600 of the NCSWMR for municipal solid waste landfills (MSWLF) closed prior to October 9, 1993.
GAS MONITORING NETWORK AT EAST BURKE LANDFILL
Six gas monitoring probes, GP-1 through GP-6, were installed at the East Burke Landfill
on June 23-24, 2015 in accordance with the approved LFGMP. As part of the 2015 LFGRP, the County proposed to install an additional GP-1B due to methane exceedances in GP-1. GP-1B
was installed on June 28, 2016. The locations of the gas probes are shown on Drawing 1 and
boring logs for the six gas probes are attached.
Mr. Jaclynne Drummond
July 21, 2016
Page 2 of 3

METHANE EXCEEDANCES
The first quarterly monitoring of gas probes GP-1 through GP-6 was conducted on July
16, 2015. Methane in exceedance of the lower explosive limit (LEL) of 5% by volume was
detected in GP-1, GP-3, and GP-4, but not detected above the LEL in the other three probes. Methane concentrations in exceedance of the lower explosive limit (LEL) for methane were
detected in GP-1, GP-3 and GP-4 during December 7 monitoring event of 2015. Landfill gas
monitoring conducted in February and May of 2016 detected methane exceedance of the LEL in
GP-1, GP-3, and GP-4. The monitored exceedances of methane concentrations fluctuate slightly
from quarterly event to another not showing particular increase or decrease in the methane concentrations.
LANDFILL GAS REMEDIATION PLANS
Burke County proposed plans for controlling the migration of landfill gas from the East
Burke Landfill. The SWS approved the Landfill Gas Remediation Plans in September 18, 2015.
The LFGRP included landfill gas vents to be installed at East Burke landfill and an additional gas probe (GP-1B). The County installed three passive gas vents at the East Burke on May 19,
2016, and GP-1B on June 28, 2016. The installed vent and probe locations are shown on
Drawing 1. The vents were located approximately 50-100 feet inside the edge of waste. Borings
for the vents were advanced through the waste until native soil was reached. The gas vents were
installed using a bucket auger rig with a 36 inch boring diameter. Waste removed from the borings was collected in roll-off boxes, and transported to the transfer station at the John’s River
facility for disposal.
The gas vents were constructed of 6-inch diameter, schedule 80 PVC perforated screen
and solid riser. The screen was installed from the total boring depth to approximately 5 feet
below grade, with riser pipe extending from five feet below grade to approximately five feet above grade. The annular space was filled with #57 stone from the total depth to two feet above
the screen. A two-foot thick bentonite seal was placed in the annular space above the gravel.
The remaining annular space was backfilled with soil to ground surface and compacted. The
vents were completed with solar-powered turbine vent caps. A photo of one of the gas vents is
attached.
MONITORING AND FURTHER ACTION
Quarterly landfill gas monitoring will continue at the site. After one year of gas
monitoring (four quarterly events) following installation of the vents, the County will make an
assessment regarding the effectiveness of the passive vents.

PASSIVE GAS VENT BORING LOGS

LANDFILL GAS PROBE BORING LOGS

LANDFILL GAS VENT (PHOTO)

Passive Landfill Gas Vent (typical) at East Burke and Kirksey Drive Closed Landfills.

DRAWINGS