2906_DavidsonMSW_LFGmonitoringPlan_DIN28671_20170929

Landfill Gas Monitoring Plan

Davidson County MSW Landfill - Phase 2
Davidson County, North Carolina

Prepared for:

Davidson County Integrated Solid Waste Management Department
Lexington, North Carolina

September 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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Landfill Gas Monitoring Plan

Davidson County MSW Landfill - Phase 2
Davidson County, North Carolina

Prepared For:
Davidson County Integrated Solid Waste Management
Lexington, North Carolina

S+G Project No. DAVDCO-16-10

Madeline M. German, P.G.
Project Geologist

Joan A. Smyth, P.G.
Vice President, Senior Hydrogeologist

September 2017

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Davidson County MSW Landfill - Phase 2 Landfill Gas Monitoring Plan
September 2017 Table of Contents Page i
Davidson County MSW Landfill - Phase 2
Davidson County, North Carolina

Landfill Gas Monitoring Plan

Table of Contents
Page

1.0 INTRODUCTION ................................................................................................................... 1 
1.1 Regulatory Requirements ......................................................................................... 1 
1.2 Guidance Document .................................................................................................. 2 
1.3 Contact Information .................................................................................................. 2 
1.3.1 Owner ............................................................................................................ 2 
1.3.2 Engineer ........................................................................................................ 3 
1.3.3 North Carolina Department of Environmental Quality (NC DEQ) ................ 3 
1.4 Existing Site Conditions ............................................................................................. 3 
1.4.1 Site Geology ................................................................................................... 4 
1.4.2 Local Groundwater Regime .......................................................................... 5 
2.0 MONITORING PROGRAM .................................................................................................... 7 
2.1 Monitoring Frequency ............................................................................................... 7 
2.2 Monitoring Network .................................................................................................. 7 
2.3 Monitoring and Reporting ......................................................................................... 7 
2.3.1 Personnel ...................................................................................................... 8 
2.3.2 Equipment ..................................................................................................... 8 
2.3.3 Procedures .................................................................................................... 8 
2.3.4 Precautionary Action Plan ............................................................................ 9 
2.3.5 Record Keeping ........................................................................................... 10 
2.4 Maintenance ............................................................................................................ 10 
3.0 CONTINGENCY PLAN .........................................................................................................11 
3.1 Immediate Action Plan ............................................................................................ 11 
3.1.1 Reporting and Documentation .................................................................... 11 
3.2 Remediation Plan .................................................................................................... 11 

FIGURES
Figure 1 Landfill Gas Monitoring Network
Figure 2 Methane Monitoring Requirement Flowchart

APPENDIX
Appendix A LFG Boring Logs
Appendix B Training Form
Appendix C Reporting Forms

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Davidson County MSW Landfill - Phase 2 Landfill Gas Monitoring Plan
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1.0 INTRODUCTION
This Landfill Gas (LFG) Monitoring Plan (plan) was prepared by Smith Gardner, Inc. and
presents a comprehensive landfill gas (LFG) monitoring program for the Davidson County Phase
2 Municipal Solid Waste (MSW) Landfill (NC Solid Waste Permit 29-06); with the objective to
provide clear guidelines and procedures for field and laboratory personnel when collecting and
analyzing methane samples. 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, air quality, or other
related landfill gas regulations or requirements which may be applicable to this site at present
or in the future.
1.1 Regulatory Requirements
The North Carolina Solid Waste Management Rules 15A NCAC 13B.1626(4) requires the
following for facilities having a MSW landfill:

 Owners or operators of MSW landfill units must ensure that:
o the concentration of methane gas generated by the facility does not
exceed 25% of the lower explosive limit (LEL) for methane (1.25%
methane) in facility structures (excluding gas control or recovery system
components); and
o the concentration of methane gas does not exceed the LEL for methane
(5% methane) at the facility property boundary.

 Owners or operators of MSW landfill units must implement a routine methane
monitoring program and perform monitoring on at least a quarterly basis.

 If regulatory limits for methane gas concentrations are exceeded, a contingency
plan must be implemented for the protection of human health and safety.

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Davidson County MSW Landfill - Phase 2 Landfill Gas Monitoring Plan
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1.2 Guidance Document
This plan was developed generally following the Landfill Gas Monitoring Guidance
document prepared by the North Carolina Department of Environmental Quality (NC
DEQ), Division of Waste Management (DWM)1.
1.3 Contact Information
All correspondence and questions concerning this plan should be directed to the
appropriate contact below:
1.3.1 Owner
Davidson County Public Works and Services Department
P.O. Box 1067
Lexington, North Carolina 27293
945 N. Main Street
Lexington, North Carolina 27292
Phone: [phone]

Contact: Rex Buck, Public Services Director
[e-mail]

Davidson County Landfill Facility
Office: 220 Davidson County Landfill Road
Lexington, NC 27292

Active MSW Landfill: 1160 Old US Highway 29
Thomasville, NC 27360

Phone: [phone]

Contact: Steven Sink, Operations Manager
[e-mail]

1 NC DEQ DWM (2010), “Landfill Gas Monitoring Guidance”, NC DEQ DWM Solid Waste Section, November
2010.
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Davidson County MSW Landfill - Phase 2 Landfill Gas Monitoring Plan
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1.3.2 Engineer
Smith Gardner, Inc.
14 N. Boylan Avenue
Raleigh, North Carolina 27603
Phone: [phone]

Contacts: Joan A. Smyth, P.G., Senior Hydrogeologist
[e-mail]
Pieter K. Scheer, P.E., Senior Engineer
[e-mail]
1.3.3 North Carolina Department of Environmental Quality (NC DEQ)
Division of Waste Management (DWM) - Solid Waste Section:

North Carolina DEQ – Raleigh Central Office
217 W. Jones Street
Raleigh, NC 27603
1646 Mail Service Center
Raleigh, NC 27699-1646
Phone: [phone]

Contacts: Permitting Hydrogeologist: Perry Sugg, P.G.
Field Operations Branch Head: Jason Watkins
Solid Waste Permit Engineer: Ming Chao, P.E.

North Carolina DEQ - Winston-Salem Regional Office
450 Hanes Mill Road, Suite 300
Winston-Salem, NC 27105
Phone: [phone]

Contacts: Environmental Senior Specialist: Susan Heim
Division of Air Quality Regional Supervisor: Lisa Edwards
1.4 Existing Site Conditions
The facility is located approximately six miles west of downtown Lexington, off Old U.S.
Highway 29. The surrounding area is mixed rural-residential, undeveloped property and
agricultural.

The Phase 2 landfill is located on 230 acres owned by Davidson County, bounded by the
North Carolina Railroad Company right of way and Jimmy’s Creek to the south, Rich
Fork Creek to the west, Old Highway 29 to the north and a home and undeveloped land to
the east. Existing ground surface elevations in the Phase 2 area generally range from
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Davidson County MSW Landfill - Phase 2 Landfill Gas Monitoring Plan
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El. 650 feet amsl2 to El. 720 feet amsl. The surrounding area is used for various
residential and agricultural purposes. The facility location is provided on Figure 1.

The landfill facility is divided by North Carolina Railroad Company owned railroad tracks.
The Phase I landfill, the C&D landfill, the unlined MSW landfill units and a leachate
storage pond are located south of the railroad tracks. The Phase 2 landfill, that includes
the closed Area 1, active Area 2, future Area 3, the leachate storage facility and
scalehouse are located north of the tracks. Access to the Phase I landfill area is via Roy
Loop Road and access to the Phase 2 area is by Old Highway 29.

The existing Phase 2 area site topography ranges from 730 to 680 feet above mean sea
level (amsl). Existing Area 3 topography ranges from approximately 698 ft. amsl to 725
ft. amsl. The facility location and existing site conditions are shown on Figure 1.
1.4.1 Site Geology
The Davidson County Landfill facility is located in the Piedmont Physiographic
Province of North Carolina. According to the Geologic Map of North Carolina
(1985) the site lies within, but at the western margin of, the Carolina Slate Belt;
which is predominantly volcanic and sedimentary rocks of Late Proterozoic to
Cambrian age that have been metamorphosed and intruded by numerous
igneous plutons. The boundary zone between the Carolina Slate Belt and the
adjacent Charlotte Belt is known as the Gold Hill/Silver Hill shear zone.
Geological and geotechnical conditions at the proposed Phase 2 expansion site
are typical of the North Carolina Piedmont physiographic province.

Mapping published by the US Geological Survey in the Geologic Map of Charlotte
by Goldsmith, Milton and Horton (1988) indicates that the site vicinity is underlain
by three stratigraphic units. Metavolcanic rocks include mafic, intermediate and
felsic volcanic rocks, rocks from the Flat Swamp Member of the Cid Formation,
and metavolcanic rocks of the Battleground Formation. The Battleground
Formation is characterized as a quartz-sericite schist and phyllite and contains
subordinate beds of quartz-pebble conglomerate, quartzite, kyanite or sillmanite
quartzite and manganiferous schist. The felsic metavolcanic rocks (mvf) are fine
to medium grained rhyolitic and rhyodacitic metatuffs; locally these are coarse-
grained. This unit contains minor intermediate and mafic metavolcanic rocks
and is probably correlative, at least in part, with felsic metavolcanic rocks of the
Battleground Formation. Metamorphosed granitic plutons mapped in this area
are megacrystic and well foliated.

Multiple intrusions of metagabbro and metabasalt dikes and conformable sheets
are common throughout the region. The metagabbro typically crops out as round
residual boulders that show no foliation except in the Gold Hill/Silver Hill shear
zone.

2 feet amsl = feet above mean sea level
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Soils encountered include sandy silt and partially weathered rock. For the
purposes of this report partially weathered rock is defined as soils with a
standard penetration test blow count of 100+ blows per foot.
1.4.2 Local Groundwater Regime
In the uppermost aquifer, ground water elevations at the site generally flow
within the soil overburden. Two perennial streams, Jimmy’s Creek and Rich
Fork Creek, serve as the groundwater discharge features south, west and north-
northwest for the proposed facility south of Old Highway 29. Davidson County is
located in Yadkin-Pee Dee drainage basin. Based on the Phase 2 hydrogeological
characterization study, there are two distinct hydrogeologic units present:
unconfined surficial soils (uppermost aquifer) and a bedrock aquifer (fracture
flow). The aquifer thickness in Area 3 is estimated to be between 10 and 50 feet.
The Phase 2 site has a ground water divide at its center. Groundwater and
surface water in Area 3 drain in a general west and northwestern direction
ultimately discharging in Rich Fork Creek.

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2.0 MONITORING PROGRAM
This section of the LFG Monitoring Plan addresses each aspect of the monitoring program
including monitoring frequency, monitoring network, and monitoring and reporting procedures.
2.1 Monitoring Frequency
Routine LFG monitoring will be conducted on a quarterly basis.
2.2 Monitoring Network
The LFG monitoring network for the Davidson County Phase 2 Landfill includes nine
existing LFG monitoring wells (LFG-1 through LFG-9). No additional locations are
proposed with the Area 3 expansion. The perimeter LFG monitoring system is designed
with wells located to intercept potential migrating LFG.

LFG-1 is located northeast of Phase 2 Area 1, approximately 160 feet from the liner limit
and slightly west of MW-2. LFG-2 is located approximately 160 feet north of Phase 2
Area 1, near cluster pairs MW-4/MW-4D and MW-3/MW-3D. LFG-3 is located
approximately 480 feet northwest of Area 1. LFG-4 is located on the western side of
Area 1, approximately 90 feet from the liner. LFG-5 is located approximately 145 south
of Phase 2 near MW-6 and MW-6D. LFG-6 is located approximately 115 feet south of
Area 1 near MW-8. LFG -7 is located north west of the proposed Area 3. LFG-8 is
located north east of Phase 2. LFG-9 is located on the south east side of Phase 2.

Existing monitoring locations are shown on Figure 1 and are summarized in the table
below. Boring logs for LFG monitoring wells are provided in Appendix A.

Davidson County Landfill Phase 2 LFG Monitoring Network

Monitoring Location
Existing Monitoring Wells/Structures:
LFG-1 LFG-6
LFG-2 LFG-7
LFG-3 LFG-8
LFG-4 LFG-9
LFG-5 Phase 2 Scalehouse

If desired by the County, a dedicated methane monitor may be installed within the
monitored structures.
2.3 Monitoring and Reporting
Monitoring and reporting of LFG concentrations will be performed as outlined below.

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2.3.1 Personnel
LFG monitoring will be performed by personnel who are familiar with the
requirements of this plan and who are trained in LFG hazards and explosive gas
meter use. As practical, a designated technician will be assigned to regular LFG
monitoring duty. A LFG training form is provided in Appendix B.
2.3.2 Equipment
A LandtecTM GEM-2000 infrared portable gas analyzer (or equivalent) and
Sensorcon hydrogen sulfide meter (or equivalent) will be used to monitor LFG
wells and structures. The GEM, which is calibrated to methane (CH4), operates
using the infrared spectral property of methane to measure concentrations in
air. Measurements of oxygen (O2) and carbon dioxide (CO2) will also be made with
this meter. This meter may be used in oxygen deficient areas (less than 10% O2)
since oxygen is not required for a chemical combustion of flammable gases
within the meter.

On the day of monitoring, prior to monitoring activities, this meter will be field
calibrated. Additionally, all monitoring equipment should be regularly calibrated
in accordance with manufacturer’s specifications and operated only as
instructed.
2.3.3 Procedures
Prior to each monitoring event, the portable gas analyzer will be calibrated with a
known calibration standard in accordance with manufacturer’s
recommendations. General information related to the monitoring event,
equipment used, calibration procedures, weather conditions, and results for
each monitoring event will be recorded on the landfill gas monitoring data form
(Appendix C).

The following steps outline the procedure for LFG monitoring:

 Check calibration date on the meter and calibrate according to
manufacturers instructions; allowing equipment to warm up properly
prior to use, per manufacturers direction.
 Purge sample tube for one minute before monitoring.

LFG Monitoring Wells:
o Connect instrument tubing to sample port on the monitoring well
without removing the cap.
o Open the valve and record both the initial and stabilized methane
concentrations. A stabilized concentration will not vary more than
0.5 percent by volume on the instrument’s scale. Also record the
oxygen concentration (at two percent per volume or less to
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Davidson County MSW Landfill - Phase 2 Landfill Gas Monitoring Plan
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indicate air is not being drawn into the system and providing false
readings) and the carbon dioxide concentration.
o Close the valve and disconnect the tubing.
o Record monitoring data on the LFG monitoring data form provided
in Appendix C.
o If any methane concentration is greater than 50% of the LEL (2.5%
CH4), monitoring personnel should implement the Precautionary
Action Plan (Section 2.3.4).
o If both initial and stabilized methane concentrations are less than
50% of the LEL (2.5% CH4), move to next LFG monitoring well.

Structures:
o Walk through the facility structure with a methane analyzer and
hydrogen sulfide meter to monitor the perimeter wall interface of
the structure, the floor to wall interface in hallways and rooms,
and any floor penetrations in the structure. Record the initial and
stabilized methane concentrations, oxygen concentration,
hydrogen sulfide concentration and carbon dioxide concentration.
o Record monitoring data on the LFG monitoring data form provided
in Appendix C.
o Notify the Operations Manager and the Engineer for any methane
concentration greater than 0% of the LEL.

IF A STABILIZED METHANE CONCENTRATION IS GREATER THAN 100% OF THE
LEL IN A LFG MONITORING WELL OR GREATER THAN 25% OF THE LEL, OR IF
THE STABILIZED HYDROGEN SULFIDE CONCENTRATION IS GREATER THAN 20
PPM IN A FACILITY STRUCTURE, THE FOLLOWING ACTIONS WILL BE
IMPLEMENTED:

1) Recalibrate monitoring equipment and confirm results.
2) If results are confirmed, IMMEDIATELY contact the Operations Manager
and the Engineer.
3) Implement the Immediate Action Plan located in Section 3.1.
2.3.4 Precautionary Action Plan
If an initial or stabilized methane concentration is equal to or greater than 50% of
the LEL in a LFG monitoring well, monitoring personnel should perform the
following additional steps at this location:

 Measure gas pressure in the well head (in inches of water) using
magnehelic gauge or other appropriate metering device.
 Record at least one additional methane concentration measurement,
inside the well just below the top of casing.
 Evaluate the surrounding area for potential receptors to or signs of LFG
migration. LFG can stress vegetation and can kill trees and grass by root
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asphyxiation. Note stressed/dead vegetation areas on the monitoring
form.
 Notify the Operations Manager and the Engineer for further evaluation.
2.3.5 Record Keeping
Routine LFG monitoring events will be documented on the LFG monitoring data
form provided in Appendix C. Completed forms will be placed in the landfill
operating record located at the landfill office. These forms will be available for
review by DWM personnel on request.

Documentation of any contingency plan actions (Section 3.0) will also be kept in
the operating record.
2.4 Maintenance
Periodic maintenance and site observations will be conducted routinely to address
monitoring program components (at a minimum):

 Maintain access to LFG monitoring locations.
 Perform LFG monitoring well maintenance (maintain well locks, steel casing,
concrete pad, etc.).
 Observe landfill cover conditions, areas of dead vegetation, leachate seeps,
odors, etc. as indications of potential LFG-related problems.

Note deficiencies on the monitoring forms and report to the Operations Manager for
repair or replacement as necessary.

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3.0 CONTINGENCY PLAN
If a stabilized methane concentration is greater than 100% of the LEL in a LFG monitoring well
or greater than 25% of the LEL in a facility structure or if the stabilized hydrogen sulfide
concentration is greater than 20 ppm in a facility structure, the County will perform both an
immediate action and plan and a remediation plan as described below and as summarized on
Figure 2.
3.1 Immediate Action Plan
The Operations Manager will perform the following actions for the protection of human
health and safety:

1) Evacuate affected facility structures and the immediately surrounding area.
2) Determine nearby potential receptors (facility and off-site structures).
3) Perform monitoring in any facility structure near the monitoring location having
the high concentration.
4) Contact the local Fire Department (911). Coordinate evaluation of potentially
affected off-site structures with the Fire Department.
5) Verbally notify the Public Utilities Director, or his designee.
6) Verbally notify the DWM (Section 1.1) as soon as practical.
7) Investigate and identify the potential source(s) and conduit(s) for LFG migration
that may have caused the high concentration (i.e. the path that the LFG may be
taking to the monitoring location).
8) Identify the LFG extent using bar hole punch sampling methodology or other
applicable alternative method as practical.
9) As appropriate, begin corrective action to control methane concentrations in
structures surrounding the landfill site.
3.1.1 Reporting and Documentation
Within seven days of the detection of a high methane concentration, the County
will prepare and submit an Environmental Monitoring Reporting Form (Appendix
C) with the results of the monitoring event to the DWM. The County will also
place a description of the actions performed to protect human health in the
operating record.
3.2 Remediation Plan
Within sixty days of the detection of a high methane concentration, a remediation plan
describing the problem nature, extent, and proposed remedy will be prepared and
submitted to the DWM for approval. Following approval, the plan will be implemented
and a copy will be placed in the operating record. The DWM will also be notified the plan
has been implemented.

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An extension may be granted by the DWM on written request and depending on severity
of the situation.

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FIGURES

Landfill Gas Monitoring Plan
Davidson County MSWLF - Phase 2
Davidson County, North Carolina
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G:\CAD\Davidson\Davdco 16-7\sheets\DAVDCO-B0831.dwg - 5/22/2017 5:09 PMDRAWN:APPROVED:PROJECT NO:SCALE:FILENAME:DATE:FIGURE NO. PREPARED BY:PREPARED FOR:SMITH14 N. Boylan Avenue, Raleigh NC 27603NC LIC. NO. F-1370 (ENGINEERING)919.828.0577GARDNER+© 2017 Smith Gardner, Inc.DAVIDSON COUNTY GAS PRODUCERSDAVIDSON COUNTY LANDFILLLANDFILL GAS MONITORING NETWORK J.A.L.AS SHOWN 1May 2017DAVDCO 16-7 DAVDCO-B0831
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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:G:\CAD\Davidson\Davdco 16-7\sheets\DAVDCO-A0832.dwg - 5/22/2017 3:45 PM© 2017 Smith Gardner, Inc.
METHANE MONITORING REQUIREMENT
FLOWCHART
DAVIDSON COUNTY LANDFILL
PHASE 2
J.A.L.M.M.G. N.T.S.DAVIDSON 16-7 2 DAVDCO-A0832May 2017
2.WITHIN 7 DAYS1.IMMEDIATELY 3.WITHIN 60 DAYS
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Appendix A
LFG Boring Logs
Landfill Gas Monitoring Plan
Davidson County MSWLF - Phase 2
Davidson County, North Carolina
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FIELD BOREHOLE LOG
BOREHOLE NUMBER
PROJECT NAME:
LOCATION:
DRILLING CO:
DRILLING METHOD:
FIELD PARTY:
GEOLOGIST:
DATE BEGUN:DATE COMPLETED:
TOTAL DEPTH:
GROUND SURFACE ELEVATION:
Depth (ft)
Time
Date
STATIC WATER LEVEL (TOC)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0DEPTHRichardson Smith Gardner and Assoc
14 North Boylan Avenue, Raleigh NC 27603
[phone] Page 1 of 1
TOP OF CASING ELEVATION:
LFG-1
HSA
Davidson County - Phase 2
Lexington, NC
Engineering Tectonics, P.A.
David Barron
Clark Wipfield
8/13/08 8/13/08
10
Grab
Grab
HSA SILT: Dry light brown silt. B.T. at 10 feet.
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
FIELD BOREHOLE LOG
BOREHOLE NUMBER
PROJECT NAME:
LOCATION:
DRILLING CO:
DRILLING METHOD:
FIELD PARTY:
GEOLOGIST:
DATE BEGUN:DATE COMPLETED:
TOTAL DEPTH:
GROUND SURFACE ELEVATION:
Depth (ft)
Time
Date
STATIC WATER LEVEL (TOC)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0DEPTHRichardson Smith Gardner and Assoc
14 North Boylan Avenue, Raleigh NC 27603
[phone] Page 1 of 1
TOP OF CASING ELEVATION:
LFG-2
HSA
Davidson County - Phase 2
Lexington, NC
Engineering Tectonics, P.A.
David Barron
Clark Wipfield
8/12/08 8/13/08
18 ft.
Grab
Grab
Grab
HSA SILT: Dry medium brown silt. Reddish color with depth. B.T. at18 feet.
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
FIELD BOREHOLE LOG
BOREHOLE NUMBER
PROJECT NAME:
LOCATION:
DRILLING CO:
DRILLING METHOD:
FIELD PARTY:
GEOLOGIST:
DATE BEGUN:DATE COMPLETED:
TOTAL DEPTH:
GROUND SURFACE ELEVATION:
Depth (ft)
Time
Date
STATIC WATER LEVEL (TOC)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0DEPTHRichardson Smith Gardner and Assoc
14 North Boylan Avenue, Raleigh NC 27603
[phone] Page 1 of 1
TOP OF CASING ELEVATION:
LFG-3
HSA
Davidson County - Phase 2
Lexington, NC
Engineering Tectonics, P.A.
David Barron
Clark Wipfield
8/12/08 8/13/08
29
Grab
Grab
SS
SS
SS
18''
18''
2''
HSA SILT: Dry gray silt.
SILTY SAND: Dry gray/white colored silt with Fe horizontalbanding.
SANDY SILT: Dry partially weathered diorite. A.R. at 29 feet.
13,15,21
17,29,36
25, 50/4
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
FIELD BOREHOLE LOG
BOREHOLE NUMBER
PROJECT NAME:
LOCATION:
DRILLING CO:
DRILLING METHOD:
FIELD PARTY:
GEOLOGIST:
DATE BEGUN:DATE COMPLETED:
TOTAL DEPTH:
GROUND SURFACE ELEVATION:
Depth (ft)
Time
Date
STATIC WATER LEVEL (TOC)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0DEPTHRichardson Smith Gardner and Assoc
14 North Boylan Avenue, Raleigh NC 27603
[phone] Page 1 of 1
TOP OF CASING ELEVATION:
LFG-4
HSA
Davidson County - Phase 2
Lexington, NC
Engineering Tectonics, P.A.
David Barron
Clark Wipfield
8/15/08 8/15/08
25
Grab
Grab
Grab
Grab
HSA SANDY SILT: Dry brownish red sandy silt.
SILT: Slightly moist brownish gray silt. B.T. at 25 feet.
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
FIELD BOREHOLE LOG
BOREHOLE NUMBER
PROJECT NAME:
LOCATION:
DRILLING CO:
DRILLING METHOD:
FIELD PARTY:
GEOLOGIST:
DATE BEGUN:DATE COMPLETED:
TOTAL DEPTH:
GROUND SURFACE ELEVATION:
Depth (ft)
Time
Date
STATIC WATER LEVEL (TOC)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0DEPTHRichardson Smith Gardner and Assoc
14 North Boylan Avenue, Raleigh NC 27603
[phone] Page 1 of 1
TOP OF CASING ELEVATION:
LFG-5
HSA
Davidson County - Phase 2
Lexington, NC
Engineering Tectonics, P.A.
David Barron
Clark Wipfield
8/15/08 8/15/08
25
Grab
Grab
Grab
Grab
HSA SANDY SILT: Dry light brown sandy silt.
SILT: Moist gray silt. B.T. at 25 feet.
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
FIELD BOREHOLE LOG
BOREHOLE NUMBER
PROJECT NAME:
LOCATION:
DRILLING CO:
DRILLING METHOD:
FIELD PARTY:
GEOLOGIST:
DATE BEGUN:DATE COMPLETED:
TOTAL DEPTH:
GROUND SURFACE ELEVATION:
Depth (ft)
Time
Date
STATIC WATER LEVEL (TOC)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0DEPTHRichardson Smith Gardner and Assoc
14 North Boylan Avenue, Raleigh NC 27603
[phone] Page 1 of 1
TOP OF CASING ELEVATION:
LFG-6
HSA
Davidson County - Phase 2
Lexington, NC
Engineering Tectonics, P.A.
David Barron
Clark Wipfield
8/15/08 8/15/08
20
Grab
Grab
Grab
HSA SANDY SILT: Dry light brown sandy silt
SANDY SILT: Partially weathered diorite. B.T. at 20 feet.
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
FIELD BOREHOLE LOG
BOREHOLE NUMBER
PROJECT NAME:
LOCATION:
DRILLING CO:
DRILLING METHOD:
FIELD PARTY:
GEOLOGIST:
DATE BEGUN:DATE COMPLETED:
TOTAL DEPTH:
GROUND SURFACE ELEVATION:
Depth (ft)
Time
Date
STATIC WATER LEVEL (TOC)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0DEPTHRichardson Smith Gardner and Assoc
14 North Boylan Avenue, Raleigh NC 27603
[phone] Page 1 of 1
TOP OF CASING ELEVATION:
LFG-7
HSA
Davidson County - Phase 2
Lexington, NC
Engineering Tectonics, P.A.
David Barron
Clark Wipfield
8/13/08 8/14/08
35 ft.
Grab
Grab
Grab
Grab
SS
SS
18''
16''
18''
HSA SAND: Dry light brown fine grained sand.
SANDY SILT: Dry mix of gray and brown sandy silt.
SILT: Dry light and dark gray fine silt, with minor Fe banding.Compacted silt with Fe banding, and partially weathered rock with
depth. B.T. at 35 feet.
24,39,45
16,20,32
19,24,32
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
FIELD BOREHOLE LOG
BOREHOLE NUMBER
PROJECT NAME:
LOCATION:
DRILLING CO:
DRILLING METHOD:
FIELD PARTY:
GEOLOGIST:
DATE BEGUN:DATE COMPLETED:
TOTAL DEPTH:
GROUND SURFACE ELEVATION:
Depth (ft)
Time
Date
STATIC WATER LEVEL (TOC)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0DEPTHRichardson Smith Gardner and Assoc
14 North Boylan Avenue, Raleigh NC 27603
[phone] Page 1 of 1
TOP OF CASING ELEVATION:
LFG-8
HSA
Davidson County - Phase 2
Lexington, NC
Engineering Tectonics, P.A.
David Barron
Clark Wipfield
8/13/08 8/13/08
14.5
Grab
Grab
HSA SANDY SILT: Dry light brown sandy silt.
SANDY SILT: Dry partially weathered rock. A.R. at 14.5 feet.
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
FIELD BOREHOLE LOG
BOREHOLE NUMBER
PROJECT NAME:
LOCATION:
DRILLING CO:
DRILLING METHOD:
FIELD PARTY:
GEOLOGIST:
DATE BEGUN:DATE COMPLETED:
TOTAL DEPTH:
GROUND SURFACE ELEVATION:
Depth (ft)
Time
Date
STATIC WATER LEVEL (TOC)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0DEPTHRichardson Smith Gardner and Assoc
14 North Boylan Avenue, Raleigh NC 27603
[phone] Page 1 of 1
TOP OF CASING ELEVATION:
LFG-9
HSA
Davidson County - Phase 2
Lexington, NC
RSG Engineers
David Barron
Clark Wipfield
8/14/08 8/15/08
25
Grab
Grab
Grab
SS 5''
HSA SAND: Dry brown sand, darker color brown with depth.
SANDY SILT: Dry partially weathered granitic rock. B.T. @ 25feet.
50/5
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
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DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9

Appendix B
Training Form

Landfill Gas Monitoring Plan
Davidson County MSWLF - Phase 2
Davidson County, North Carolina
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9

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DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
LFG MONITORING TRAINING LOG
(This log must be completed annually)

DAVIDSON COUNTY LANDFILL
LEXINGTON, NORTH CAROLINA
NC SOLID WASTE PERMIT NO. 29-06

INSTRUCTOR INFORMATION:

Name(s): __________________________________________________________________________________

Company: _________________________________________________________________________________

Address: _________________________________________________________________________________

_________________________________________________________________________________

TRAINING INFORMATION:

Date(s) (MM/DD/YYYY): ____________________________________________________________________

Program Content: _________________________________________________________________________

_________________________________________________________________________

Instrument Type(s): _________________________________________________________________________

ATTENDANCE:

Name

Title
Training
Date

Trainee Signature
Instructor
Initials

Instructor Signature: ________________________________________________ Date: ________________

Davidson County Representative Signature: _____________________________ Date: ________________

Note: This form should be maintained in the landfill operating record.
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
This page intentionally left blank.
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9

Appendix C
Report Forms

Landfill Gas Monitoring Plan
Davidson County MSWLF - Phase 2
Davidson County, North Carolina
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9

This page intentionally left blank.

DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
Form based on NC Department of Environment and Natural Resources, Division of Waste Management, Solid Waste Section, Landfill Gas Monitoring
Guidance, November 2010, pg. 16.
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.

Location
or LFG
Well ID
Sample
Tube
Purge
Time
Time
Pumped
(s)
Initial
% LEL
Stabilized
% LEL
%CH4 by
Volume %O2 %CO2 H2S
(ppm) Notes

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
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9
DocuSign Envelope ID: FD2121CB-D057-43ED-8FFA-CD0099E594BCDocuSign Envelope ID: 4565B256-EF5E-432B-8196-B06D172ECAF9