8003_Rowan_MSWLF_CDLF_PTC_LFGMP_FID1706246_20220812

Rowan County Landfill I Phase V Construction Permit Application ���
7 — Landfill Gas Monitoring Plan

Rowan County Landfill I Phase V Construction Permit Application ���
7 — Landfill Gas Monitoring Plan
This page intentionally left blank.

J GOLDER
REPORT
LANDFILL GAS MONITORING PLAN
Rowan County Landfill, Permit No. 80-03
Submitted to:
Ms. Jaclynne Drummond
Department of Environmental Quality
Division of Waste Management
Solid Waste Section
2090 US Highway 70
Swannanoa, NC 28778
[phone]
Submitted by:
Golder Associates NC, Inc.
5B Oak Branch Drive, Greensboro, North Carolina, USA 2
[phone]
20140083.400
November 12, 2020

November 12, 2020
Distribution List
Caleb Sinclair, Rowan County Environmental Management, 1102 N Long Street Extension
East Spencer, NC 28039, [e-mail]
Jeff Boyd, Landfill Manager, 789 Campbell Road, Woodleaf, NC 27054, [phone]
Mike Plummer, PE, HDR, 440 South Church Street, Suite 1000, Charlotte, NC 28202, [phone],
[e-mail] (electronic copy)
20140083.400
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November 12, 2020 20140083.400
Table of Contents
1.0 INTRODUCTION.............................................................................................................................................1
1.1
Site Description....................................................................................................................................1
1.2
Site Geology and Hydrogeology..........................................................................................................1
1.3
Regulatory Limits.................................................................................................................................2
2.0 LANDFILL
GAS MONITORING......................................................................................................................2
2.1
Proposed Compliance Landfill Gas Monitoring Locations...................................................................2
2.2
Landfill Gas Monitoring Frequency...................................................................................................... 3
3.0 LANDFILL
GAS MONITORING PROCEDURES...........................................................................................4
3.1
DETECTION EQUIPMENT USED.......................................................................................................4
3.2
LANDFILL GAS SAMPLING PROCEDURES......................................................................................4
3.2.1 Landfill Gas Monitoring Well Gas Concentration Measurements...................................................5
3.2.2 Facility Structure Gas Concentration Measurements.....................................................................5
3.3 WELL DECOMMISSIONING PROCEDURES.....................................................................................5
4.0 RECORD KEEPING AND REPORTING........................................................................................................5
4.1 Landfill Gas Monitoring Form............................................................................................................... 5
4.2 Sampling Reports.................................................................................................................................6
4.3 Permanent Record Keeping.................................................................................................................6
5.0 CONTINGENCY PLAN...................................................................................................................................6
FIGURE
Figure 1 Landfill Gas Monitoring Plan
APPENDIX
Appendix A Landfill Gas Well (Typical), Landfill Gas Monitoring Data Form, Environmental Monitoring
Reporting Form
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November 12, 2020 20140083.400
1.0 INTRODUCTION
This Landfill Gas Monitoring Plan (LFGMP) will serve as guidance for monitoring landfill gas (LFG) at the Rowan
County Landfill solid waste facility in accordance with Title 15A of the North Carolina Administrative Code (NCAC)
Subchapter 13B .1626(4), as it relates to the active municipal solid waste (MSW) unit, and 13B .0544(d), as it
relates to the closed construction and demolition (C&D) landfill unit. The Rowan County Landfill is located at 789
Campbell Road in Woodleaf, North Carolina (NC). As presented, Rowan County (the County) owns and/or
operates an active MSW unit and maintains a closed C&D unit under NC Solid Waste Permit (NC SWP) #80-03.
The C&D facility closed in 2008.
1.1 Site Description
The location of the facility is shown on the inlay on Figure 1. As presented, the Rowan County solid waste facility
is located approximately 1.5 miles southeast of the town of Woodleaf on Campbell Road, Rowan County, NC.
The landfill facility covers approximately 375 acres of land and is bounded to the north by Campbell Road,
Second Creek and woodlands to the south and east, and wooded, residential and agricultural properties to the
west. Surrounding land use is primarily rural residential, agricultural, or undeveloped and wooded. Access to the
facility is via the drive off of Campbell Road to the north. The facility is comprised of an active Subtitle D MSW
unit, a closed C&D unit, and a closed land clearing inert debris (LCID) unit (Figure 1).
Topographic elevations at the facility range from approximately 766 feet above mean sea level (AMSL) east of the
existing scale house to approximately 635 feet AMSL at the edge of Second Creek along the southern property
boundary. Surface drainage from the landfill and surrounding areas is directed by one of the two main drainage
features that drain into Second Creek, which flows from the southwest to the northeast (S&ME October 2005).
Groundwater monitoring at the facility was initiated in December 1989 under the Detection Monitoring Program for
MSW landfills.
LFG is currently monitored on a quarterly basis at both the active MSW landfill and the closed C&D landfill in
accordance with the current LFGMP prepared by Buxton Environmental (Buxton 2011). In August 2013, HDR
Engineering Inc. of the Carolinas (HDR) submitted a Landfill Gas Remediation Plan (LFGRP) in response to
exceedances of the lower explosive limit (LEL) at monitoring wells MMW-2, MMW-5, and MMW-6 during the
second quarterly event of 2013. The LFGRP proposed replacing these three wells with methane monitoring wells
located closer to the compliance boundary (i.e., the property boundary) as monitoring wells MMW-2A, MMW-5A,
and MMW-6A. Wells MMW-2, MMW-5, and MMW-6 are currently monitored for assessment purposes only (i.e.,
not for regulatory compliance). Since that time in August 2017, the County installed an active LFG collection
system. This LFGMP considers the location of these assessment wells, recent data that do not indicate LEL
exceedances at those points, and the additional LFG remedial measures (i.e., LFG collection system)
implemented since the 2011 LFGMP.
1.2 Site Geology and Hydrogeology
Geologically, the facility is located within the Charlotte Belt of the Piedmont Physiographic Province of NC (NCGS
1985). The Charlotte Belt is composed of Precambrian and Paleozoic bedrock, which is dominantly plutonic with
plutons ranging from granite to gabbro. The oldest rocks in the Charlotte Belt are mafic gneisses, amphibolites,
metagabbros and metavolcanic rocks, with lesser amounts of biotite gneiss, granitic gneiss, mica schist, quartzite,
and ultramafic rocks. Mica schists and mica hornblende gneisses locally have been intruded by granite. The
rocks underlying the facility consist of mostly diorite, gabbro, and granite (NCGS 1985).
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November 12, 2020 20140083.400
The uppermost groundwater beneath the facility is present in a shallow, unconfined aquifer comprised of partially
weathered, fractured, meta -volcanic rock. Groundwater occurs at depths ranging from near ground surface in
valleys to more than 100 feet below grade on steep hills (S&ME October 2005). Depth -to -water measurements
obtained during the January 2020 monitoring event were used to prepare a groundwater surface contour map
presented as an overlay on Figure 1 (Golder, March 2020); depth to water varies from approximately 8 to 48 feet
below ground surface across the site.
As presented, the groundwater flow in the uppermost aquifer beneath the site is to the southwest toward Second
Creek. The groundwater contour map and interpreted flow directions are consistent with previously submitted
groundwater surface contour maps for this facility. Historically, the average estimated linear groundwater flow
velocity for the subsurface at the facility is around 300 feet per year.
Regulatory Limits
Currently, the regulatory limit of methane (a component of LFG) in the LFG compliance monitoring wells in NC is
equal to the LEL of 5% methane by volume in air. The regulatory limit of methane in facility structures is 25% of
the LEL or 1.25% methane by volume in ambient air. There are currently no other regulatory limits applicable to
this facility with regards to LFG. The LEL for hydrogen sulfide, a minor component of LFG, is 4% hydrogen sulfide
by volume in air; however, the National Institute of Occupational Safety and Health (NIOSH) immediately
dangerous to life or health (IDLH) limit for hydrogen sulfide is 100 parts per million (ppm). In accordance with 15A
NCAC 13B .0544, The County also monitors for hydrogen sulfide at the MSW and C&D units as it is interpreted by
NC Division of Environmental Quality (DEQ) as `other explosive gases."
2.0 LANDFILL GAS MONITORING
The following sections discuss the proposed locations of LFG monitoring wells, the monitoring of structures, and
the monitoring frequency.
2.1 Proposed Compliance Landfill Gas Monitoring Locations
The proposed Rowan County LFG compliance network for the MSW unit consists of 7 compliance points (i.e.,
MMW-1, MMW-2A, MMW-3, MMW-4, MMW-5A, MMW-6A, MMW-7) and two on -site structures (i.e., the scale
house and the maintenance shop). The C&D unit is monitored by monitoring well MMW-CD. Based on
topography and physical features such as streams, potential LFG is expected to migrate to the north and west.
Therefore, the current network is representative and protective of human health and the environment. The
compliance methane monitoring locations are shown on Figure 1 and detailed below:
ompliance Point I
imate
FOptptroomx(ft
Depth to
bgs):
Estimated Depth to
Groundwater (ft bgs):
Waste
Location
Waste
Unit Monitored -
Relative to the
Units:
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November 12, 2020
20140083.400
ompliance Point I
Approximate Depth to
ttom (ft bgs):
Estimated Depth to
Groundwater (ft bgs):
Waste Unit Monitored -
Location Relative to the
Waste Units:
Maintenance Shop
1.) No boring records available for MMW-4.
2.) N, S, SE, W = north, south, southeast, west
3.) ft bgs = feet below ground surface; NA = not applicable; = not available
4.) Estimated Depth to Groundwater shown was approximated based on the January 2020 Groundwater Contour Map.
5.) The scale house and maintenance shops are also monitored with permanent explosive gas monitoring devices.
The estimated depth to groundwater on the table above for each location was estimated using the groundwater
surface contours provided on Figure 1 (Golder March 2020). If additional LFG monitoring wells are deemed
necessary in the future, depths will be determined by field observations during installation.
Any future LFG wells, if necessary, will be installed approximately 3 feet above the static water level to account for
seasonal -high groundwater level fluctuations. Any proposed wells will be constructed of 2-inch polyvinyl -chloride
(PVC) with 0.010-inch slotted screen from the bottom of the well up to 5 feet below ground surface. A coarse
clean sand will be used to fill the annular space to approximately 2 feet above the screen. An approximately
2-foot thick bentonite seal will be placed above the sand. The remaining annular space will be filled with a cement
mixture. The surface completion of each gas well will consist of a 2-feet by 2-feet by 0.5-foot concrete well apron
and a locking protective casing. The top of the PVC riser will be equipped a well cap with a stopcock valve or
quick connect coupling. A diagram of a typical LFG well is provided as in Appendix A.
As presented, two on -site structures (i.e., the scale house and the maintenance building) are currently monitored
for LFG on a quarterly basis. Both structures also have permanent explosive gas monitoring devices installed.
2.2 Landfill Gas Monitoring Frequency
As presented, currently LFG compliance monitoring is performed on a quarterly basis as required in Rules
.1626(4)(b) and .0544(d)(2)(B) and in accordance with NC DEQ Landfill Gas Monitoring Guidance (NC DENR,
2010). If the LEL or compliance level is exceeded for methane gas at a compliance monitoring location, in
accordance with Rules .1626(4)(c) and .0544(d)(3)(C) a LFGRP Addendum will be prepared, and an alternate
monitoring frequency will be considered, if on -site or nearby off -site conditions change (i.e., the risk factors
warrant more frequent monitoring).
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November 12, 2020 20140083.400
3.0 LANDFILL GAS MONITORING PROCEDURES
The following sections outline the recommended procedures for performing the required explosive monitoring at
LFG wells and facility structures.
3.1 DETECTION EQUIPMENT USED
The GEM-5000 Plus (or GEM-2000 Plus) is the preferred monitoring device for monitoring explosive gases at this
facility. The GEM-5000 Plus (or GEM-2000 Plus) is capable of measuring hydrogen sulfide and carbon monoxide
concentrations in LFG. Alternatively, a digital or analog manometer combined with a vacuum -pump -equipped
monitoring device designed to measure methane gas and hydrogen sulfide concentrations can be used.
In addition to the monitoring device(s), the following equipment and documents should be readily available during
monitoring events:
Copy of the facility's LFGMP
A copy of the Operation Manual(s) for the equipment being used during monitoring
Blank copies of the Landfill Gas Monitoring Data Form (a sample log is provided in Appendix A)
Calibration gas (if applicable)
Barometer (if available) or nearby weather station data
Personal protective equipment (site -specific)
Necessary keys (site -specific)
LFG monitoring equipment should be calibrated and verified in the field on the day of use. Generally, one
calibration per day is sufficient. In some instances where highly variable concentrations are being observed, it
may be necessary to re -calibrate the monitoring device during the workday to ensure that instrument drift is
minimal. Instrument drift can be checked with a calibration gas of known concentration. If more than a 3%
difference is observed between the instrument reading and the gas standard during an instrument drift check, the
unit should be recalibrated
Field calibration should be performed in accordance with the instrument manufacturer's recommendations using
an approved gas standard. Generally, when LFG monitoring wells or other compliance monitoring points
calibration gas composed of 15% by volume methane or less (i.e., ideally 5% by volume methane). Field
calibration activities shall be documented on a calibration log. LFG monitoring equipment should also be
calibrated by the manufacturer or supplier in accordance with the recommended schedule for that instrument.
3.2 LANDFILL GAS SAMPLING PROCEDURES
Prior to mobilizing to the site, weather conditions at the Rowan County Landfill shall be observed and deemed
acceptable for LFG monitoring per the NC DEQ Landfill Gas Monitoring Guidance (NC DENR, 2010). As
presented, upon arriving at the site the LFG monitoring equipment shall be calibrated, next the sampler shall
record the weather conditions at the site, including the barometric pressure, ambient temperature, and wind speed
and direction. The temperature and barometric pressure should be logged at the beginning and ending of each
field day. Site -specific barometric pressure readings are preferred, if available. In the event that a barometer is
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November 12, 2020 20140083.400
not available, barometric pressure readings from a nearby weather station can be used. Per the NC DEQ Landfill
Gas Monitoring Guidance (NC DENR, 2010), LFG monitoring shall be conducted between noon and sunset.
3.2.1 Landfill Gas Monitoring Well Gas Concentration Measurements
Before connecting the monitoring instrument to the LFG monitoring well, purge the connector tube for at least one
minute prior to taking reading. Connect the instrument tubing to the LFG monitoring well cap fitted with a stopcock
valve or quick connect coupling. Open the valve and record the initial reading and then the stabilized reading for
methane and hydrogen sulfide. A stable reading is one that does not vary more than 0.5 percent by volume on
the instrument's scale. Turn the stopcock valve to the off position and disconnect the tubing. Proceed to the next
LFG monitoring well and repeat.
3.2.2 Facility Structure Gas Concentration Measurements
Confined spaces, which require a confined space permit to enter, are excluded from these general monitoring
requirements. On -site (i.e., the scale -house and maintenance building) shall be monitored as detailed below:
After entering the designated structure, turn on the gas monitoring device and vacuum pump and
traverse the accessible and open area of the facility structure while holding the intake hose for the
monitoring device at shoulder height. During the traverse, observe the meter for any measurable
methane concentrations and record the time and concentration on the monitoring log.
If measurable methane concentrations are observed in a facility structure, attempts to identify the
source of the methane should be made. If the facility structure is elevated and has a crawl space,
the crawl space beneath the facility should be monitored from outside of the structure on accessible
sides to determine if the methane gas is migrating into the structure from the crawl space. Do not
enter a crawl space beneath a structure without proper authorization and sufficient personal
protection equipment, including an oxygen monitoring device, since these areas may be considered
confined spaces. If the facility structure is constructed on grade, ambient air near the exterior walls
at floor level or near cracks in the floor, if exposed, should be monitored to determine if methane gas
is migrating upward along or through the foundation.
3.3 WELL DECOMMISSIONING PROCEDURES
If a LFG monitoring well requires decommissioning, an abandonment record shall be submitted to NC DEQ within
thirty (30) days of the decommissioning. The LFG monitoring well(s) shall be decommissioned in accordance with
15A NCAC 2C .0113(d) by a certified well driller. The LFG monitoring well(s) shall be over -drilled and sealed with
grout via tremie-pipe if located in the future waste footprint. The LFG monitoring well(s) shall be sealed with grout
and all surface completions removed if not located in the future waste footprint. The decommissioning report will
be sealed by a NC Licensed/Professional Geologist or Professional Engineer.
4.0 RECORD KEEPING AND REPORTING
Quarterly LFG compliance monitoring results shall be maintained by the facility operator for the life of the facility
operation, closure, and post -closure care periods.
4.1 Landfill Gas Monitoring Form
The date, time, location, sampling personnel, equipment, atmospheric temperature, reported barometric pressure,
general weather conditions at the time of sampling, and the concentrations of methane, oxygen, carbon dioxide,
and hydrogen sulfide shall be recorded on the Landfill Gas Monitoring Data Form (see Appendix A).
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November 12, 2020
4.2 Sampling Reports
20140083.400
A letter report that includes the Landfill Gas Monitoring Data Form (see Appendix A) and a map showing the
monitoring locations will be prepared after each monitoring event. As presented, monitoring records will be kept
on site in the facility files. If explosive gas concentrations are detected in excess of allowable regulatory limits
(presented in Section 1.3) in any compliance monitoring point(s) the County will perform the following in
accordance with Rules .1636(4)(c) and 0544(d)(3):
Immediately take all steps necessary to ensure the protection of human health and the environment
and a notification will be provided to the NC DEQ (see Appendix A for Environmental Monitoring
Reporting Form)
Within 7 days of the exceedance, the LFG monitoring report will be placed in the facility monitoring
records
And the facility will update and implement a LFGRP Addendum. NC DEQ will be provided a copy of
the LFGRP Addendum.
4.3 Permanent Record Keeping
As presented above, a copy of each quarterly report shall be retained on -site as part of the permanent operating
record for the facility.
5.0 CONTINGENCY PLAN
As presented in Section 1.3, pursuant to Rules .1626(4)(a)(i) and .0544(d)(1), the compliance levels for LFG
monitoring are 25% of the LEL for methane and other explosive gasses (1.25% methane by volume) in facility
structures (excluding gas control or recovery system components) and 100% of the LEL (5% methane by volume)
for methane at the facility boundary. In addition to the reporting requirements above, if either of these compliance
levels is exceeded, the operator shall take all immediate steps necessary to protect public health and safety,
including those required by the contingency plan. The contingency plan for this facility is as follows:
Evacuating all personnel from any facility structure(s) exceeding 25% of the LEL
Notifying local fire officials of the exceedance if there are habitable structures within 1,000 feet of the
property boundary
Isolate the effective area and post signs around the affected area indicating the potential health and
safety risk and limit access (as practical)
Post signs in the affected area indicating a "No Smoking" area
Appropriate safety training for all personnel entering in the isolated area
Notify NC DEQ in a written statement within seven working days of learning that action levels have
been exceeded and indicate what has been done or is planned to be done to resolve the problem.
■ Begin initial remediation actions, which may include the following activities:
Adjustments to the LFG extraction system
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November 12, 2020
20140083.400
Addition of temporary gas monitoring well installations and sampling to determine the extent of
the gas migration
Increased monitoring of wells, structures, and any identified preferred flow pathways to verify
concentrations and to protect human health
Implement a LFRP Addendum for the explosive gas releases and submit it to NC DEQ for
amendment of the facility permit
The LFGRP Addendum shall describe the nature and extent of the problem and the proposed remedy. The plan
shall include an implementation schedule specifying timeframes for implementing the corrective actions, an
evaluation of the effectiveness of such corrective actions, and milestones for proceeding in implementation of
additional corrective actions, if necessary, to re-establish compliance. Gas control systems proposed in the
LFGRP Addendum shall be designed to:
Prevent methane accumulation in on -site structures
Prevent methane compliance level exceedances at the facility boundary
Provide for the collection, treatment, and destruction/disposal of decomposition gases and
condensate
Comply with Clean Air Act requirements, as applicable
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November 12, 2020
REFERENCES
20140083.400
The references cited below were used in the preparation of this report and may or may not be referenced in the
text.
Butler, R.J., and Secor, Jr., D.T., 1991, The Central Piedmont, in Horton, J. W., Jr., and Zullo,
V.A., eds., The Geology of the Carolinas: The University of Tennessee Press, pp. 59-78.
Buxton Environmental, Inc., September 2011, Design Hydrogeologic Report, Proposed Phase IV Landfill
Subtitle D Municipal Solid Waste Landfill Expansion, Rowan County Landfill.
Golder Associates NC, Inc., March 2020. Water Quality Monitoring Report, First Semi -
Annual 2020 Sampling Event, Active Rowan County Landfill, Permit No. 80-03, Rowan County,
North Carolina.
HDR Engineering, Inc. of the Carolinas (HDR), Landfill Gas Remediation Plan, Rowan County Landfill, NC SWP#
80-03, Submitted to NC DEQ: August 2, 2013.
NCGS (North Carolina Geologic Survey), 1985. Geologic Map of North Carolina. Scale
1:500,000.
North Carolina Department of Environment and Natural Resources (NC DENR). Landfill Gas Monitoring
Guidance, November 2010.
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November 12, 2020
Professional Certification
20140083.40❑
The Landfill Gas Monitoring Plan for the Rowan County active MSW and closed C&D landfills at this facility has
been prepared by a qualified geologist who is licensed to practice in the State of North Carolina. The plan has
been prepared based on first-hand knowledge of site conditions and familiarity with North Carolina solid waste
rules and industry standard protocol. This certification is made in accordance with North Carolina Solid Waste
Regulations, indicating this Landfill Gas Monitoring Plan should provide early detection of any release of explosive
gases from the facility, so as to be protective of public health and the environment. No other warranties,
expressed or implied, are made.
Golder Associates NC, Inc.
� ��.1.CA►4D
Rachel P. Kirkman, PG
Principal and Senior Consultant
Not valid unless this document gears the seal of the above -mentioned licensed professional.
Engineering Lic. No. C-28621Geology Lic. No. C-399
Golder Associates NC, Inc. is a licensed user of the Golder trademark, and an associated operating entity.
Golder and the G logo are trademarks of Golder Associates Corporation.
https:ligoiderassociates.sharepoin6comleites/13291$lproject liiesl5 technical work12020.2021 rowan county landliluphase 4DO environmental monitoring plan updateslmmplrowan 8003
landfill gas monitoring plan.docx
t> GOLDER 9

FIGURE

SCALE
OLD HOUSE
EXISTING LANDFILL
16
ENT
---�7r ENTRANCE PROPERTY
_______ LIE W- D
00 MW-9 /
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67 y8" 1 _ ♦ t58.67
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1 MSW LANDFILL ♦♦41
0
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1 ♦ ( TOPOGRAPHY BOUNDARY
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jSEDIMENT
� \\\\\�-_ ♦ ♦ BASIN
1
1
I
I
I
1
1
TO SW-1
(SEE NOTE 6)
SITE LOCATION
N
-� f-
SITE LOCATION MAP
1" = 10,000'
CLIENT
ROWAN COUNTY
CONSULTANT
PG C-399 YYYY-MM-DD
2020-11-11
PREPARED
BPG
GO L D E R DESIGN
RPK
REVIEW
DYR
GOLDER ASSOCIATES NC, INC. APPROVED
RPK
LEGEND
EXISTING TOPOGRAPHIC CONTOUR
FACILITY BOUNDARY
— — — — APPROXIMATE LIMITS OF WASTE
650 GROUNDWATER SURFACE CONTOURS
APPROXIMATE GROUNDWATER FLOW SEGMENT USED TO CALCULATE GRADIENT
O6647.7.56 EXISTING GROUNDWATER MONITORING WELL WITH GROUNDWATER ELEVATION
❑SW-4 SURFACE WATER MONITORING POINT
COMPLIANCE METHANE MONITORING POINT
ASSESSMENT METHANE MONITORING POINT
NM NOT MEASURED
® FRENCH DRAIN MONITORING POINT
NOTES
1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET.
2. GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET.
3. GROUNDWATER ELEVATIONS MEASURED ON JANUARY 16, 2020
4. GROUNDWATER CONTOURS ARE BASED ON LINEAR INTERPOLATION BETWEEN AND
EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS AND KNOWN FIELD CONDITIONS.
THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL GROUNDWATER
CONDITIONS.
5. GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION. THESE
CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT 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. SURFACE WATER MONITORING POINT SW-1 IS APPROXIMATELY 550 FEET OFF THE MAPPING LIMITS
SHOWN AND IS COLLECTED FROM SECOND CREEK.
7. MONITORING WELLS MW-27A, MW-28 AND MW-6 ARE UTILIZED FOR WATER LEVEL MONITORING
ONLY.
8. THE LOCATION OF THE FRENCH DRAIN MONITORING POINT IS APPROXIMATE.
9. MW-28R WAS INSTALLED JULY 11, 2017 TO REPLACE MW-28. MW-28 WILL CONTINUE TO BE UTILIZED
FOR WATER LEVEL MONITORING.
REFERENCE
1. EXISTING CONDITIONS INSIDE OF DASHED LINE COMPILED BY CARTOGRAPHIC AERIAL MAPPING,
INC. USING PHOTOGRAMMETRIC METHODS, FROM AERIAL PHOTOGRAPHY DATED JUNE 26, 2020.
EXISTING CONDITIONS OUTSIDE OF DASHED LINE PROVIDED BY S&ME ENGINEERING, INC., DATE
UNKNOWN.
2. PROPERTY BOUNDARY TAKEN FROM CAD FILE TITLED, "WELLS.DWG," PROVIDED BY HDR INC
0 250 500
SCALE FEET
PROJECT
ROWAN COUNTY ACTIVE AND CLOSED LANDFILLS
PERMIT NO. 80-03
ROWAN COUNTY, NORTH CAROLINA
TITLE
LANDFILL GAS MONITORING PLAN
PROJECT No. Rev. FIGURE
20-140083 400 0

APPENDIX A
Landfill Gas Well (Typical), Sample
Landfill Gas Monitoring Data Form,
and Environmental Monitoring
Reporting Form

Figure 1— Landfill Gas Monitoring Well Detail
SEASON
LE STEEL CASING
UP WTH LOCKING
PLING PORI
DRATED ,C
(2X2X0.5")
:T SEAL - 2'
MFG. SPECS)
IDIUM BENTONITE)
ILL SCREEN (2")
13

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:
Sampling Date: NC Landfill Rule (.0500 or.1600):
Sample Collector Name & Position:
Gas Meter Type & Serial Number:
Field Calibration Date & Time:
Field Calibration Gas Type (15115 or 35/5
Gas Meter Pump Rate:
Gas Meter Calibration Date:
eld Calibration Gas Canister Expiration Date:
Ambient Air Temperature: Barometric Pressure (in. or mm
Instructions: Under "Location or LFG Well", list monitoring well # or
Attach a test location map or drawing. Report methane
Convert % CH4 (by volume) to % LEL as follows: % me
*Hydrogen Sulfide (H2S) gas monitoring may be requ4
individual permit conditions and/or Facility LFG monitoi
tions:
(e.g., inside field office).
% CH4 by volume.
.EL.
ition Landfills (CDLFs). See
Location or
LFG Well ID
S ample
Tube
Purge
Time of
Day
Time
Pumped
(sec)
Initial
%LEL
Stabilize
%LEL
%�/02
v e )
olume)
% CO2
(volume)
% H2S*
(volume)
NOTES
NOTE: If needed, attach additional data forms to include additional LFG monitoring data locations for the facility.
ACTION LEVELS: Methane: >1.25% by volume (inside structures) AND >5% by volume (at facility boundary)
Hydrogen Sulfide: >1% by volume (inside structures) AND >4% by volume (at facility boundary)
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
Revised — March 6, 2017

DENR USE ONLY ❑Paper Report [:]Electronic Data - Email CD (data loaded: Yes / No Doc/Event #:
NC DENR I I Environmental Monitoring
Division of Waste Management - Solid Waste Reporting 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).
Instructions:
Prepare one form for each individually monitored unit.
Please type or print legibly.
Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 2B surface water standards. The notification
must include a preliminary analysis of the cause and significance of each value. (e.g. naturally occurring, off -site source, pre-existing
condition, etc.).
Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits.
Attach a notification table of any methane gas values that attain or exceed explosive gas levels. This includes any structures on or nearby the
facility (NCAC 13B .1629 (4)(a)(i).
Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDENR-DWM, Solid Waste
Section, 1646 Mail Service Center, Raleigh, NC 27699-1646.
Solid Waste Monitoring Data Submittal Information
Name of entity submitting data (laboratory, consultant, facility owner):
Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address:
Name:
E-mail:
Phone:
NC Landfill Rule: Actual sampling dates (e.g.,
Facility name: Facility Address: Facility Permit # (.0500 or. 1600) October 20-24, 2006)
Environmental Status: (Check all that apply)
❑ Initial/Background Monitoring ❑ Detection Monitoring ❑ Assessment Monitoring ❑ Corrective Action
of data submitted: (Check all that apply)
Groundwater monitoring data from monitoring wells ❑
Groundwater monitoring data from private water supply wells ❑
Leachate monitoring data ❑
Surface water monitoring data
Methane gas monitoring data
Corrective action data (specify)
Other(specify)
Notification attached?
B No. No groundwater or surface water standards were exceeded.
Yes, a notification of values exceeding a groundwater or surface water standard is attached. It includes a list of groundwater and surface water
monitoring points, dates, analytical values, NC 2L groundwater standard, NC 2B surface water standard or NC Solid Waste GWPS and
preliminary analysis of the cause and significance of any concentration.
❑ Yes, a notification of values exceeding an explosive methane gas limit is attached. It includes the methane monitoring points, dates, sample
values and explosive methane gas limits.
Certification
To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct.
Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas
levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there
are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment.
Facility Representative Name (Print) Title (Area Code) Telephone Number
Signature
Facility Representative Address
Date
Affix NC Licensed/ Professional Geologist Seal
NC PE Firm License Number (if applicable effective May 1, 2009)
Revised 6/2009

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