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HomeMy WebLinkAbout4302_DunnErwinCDLF_LFGWellAbandonementInstallation_DIN26602_20160809 August 9, 2016 Ms. Elizabeth Werner Hydrogeologist North Carolina Department of Environmental Quality Solid Waste Section 1646 Mail Service Center Raleigh, NC 27699-1646 RE: LFG Probe Install and Abandonment Harnett County Landfill – Dunn Erwin Facility (SWS Permit No. 43-02) Dunn, North Carolina Dear Ms. Werner: Smith Gardner, Inc. (S+G) recently completed the probe installation and abandonment for LFG locations related to the Active C&D over Closed MSW at the Harnett County Dunn Erwin Solid Waste Facility. The following is a summary of the above mentioned activities for this site. Background Quarterly LFG monitoring readings for the LFG monitoring probe GM-6, located slightly northeast of the maintenance building, have been consistently above 100% LEL since February 2015. This location is adjacent to the landfill, therefore, not representative of gas migration at the property line, located approximately 900 feet from this location. A replacement monitoring probe (GM-6A) was installed near the property line on April 8, 2016. Probe Installation On April 8, 2016 personnel from GeoTechnologies Inc.1 mobilized at the Dunn Erwin Landfill Facility to perform the LFG monitoring probe installation. GM-6A was installed near the property line north of the active C&D over closed MSW landfill. The boring was advanced to 19ft bgs2, just above the approximate groundwater table in this area. GM-6A was constructed with 13ft of 0.010 slotted, 2-inch diameter PVC screen, with 6ft of solid riser pipe and a 3ft above grade, then finished with a steel above-grade case, lock, ID tag and concrete pad. The construction record and boring log are provided in Attachment A. Figure 1 presents the updated LFG monitoring network. 1 GeoTechnologies, Inc. P.A., 3200 Wellington Ct. Ste 108, Raleigh, NC 27615 2 bgs = below ground surface Ms. Werner 8/9/2016 Page 2 of 2 Probe Abandonment GM-6, located on the east side of the active C&D over closed MSW landfill, was abandoned in accordance with the 2C Rules, by tremie grouting with a bentonite slurry and cement from the bottom of the borehole to the ground surface in one continuous operation. The entire 15ft, 1in PVC pipe was able to be removed. The probe abandonment records are provided in Attachment B. This monitoring location will be included in the monitoring network beginning with the April 2016 LFG monitoring event. Landfill Gas Monitoring Network Update Due to recent, consistent LFG detections in GM-6, a replacement probe (GM-6A) was positioned near the property line. With a monitoring location further from the landfill, monitoring results will yield a more accurate picture of LFG migration at the site and monitoring locations GM-4, GM-6 and GM-8 can be removed from the network. The updated monitoring network will now include probes GM-2, GM-6A and GM-7. The updated landfill gas monitoring plan is provided as Attachment C. Please contact us at (919) 828-0577 or by e-mail below if you have questions or require additional information. Sincerely, SMITH GARDNER, INC. Madeline German, P.G. Joan A. Smyth, P.G. Project Geologist Senior Hydrogeologist madeline@smithgardnerinc.com joan@smithgardnerinc.com Attachment Figure 1 – LFG Monitoring Network Attachment A – Construction Record and Boring Log Attachment B – Abandonment Record Attachment C – LFG Monitoring Plan cc: Amanda Bader, P.E., Harnett County Randy Smith, Harnett County Pieter Scheer, P.E., S+G File H:\Projects\Harnett County (NC)\Dunn-Erwin Landfill Facility\HARNETT-DE (LFG update)\well install\LFG install and abandonment letter.docx Figure This page intentionally left blank. G : \ C A D \ H a r n e t t C o u n t y \ H a r n e t t - D E - 1 3 - 2 \ s h e e t s \ H A R N E T T - B 0 1 0 2 . d w g - 7 / 2 6 / 2 0 1 6 1 1 : 0 0 A M DRAWN:APPROVED:PROJECT NO:SCALE:FILENAME:DATE:FIGURE NO. PREPARED BY:PREPARED FOR:SMITHGARDNER+ © 20 1 6 S m i t h G a r d n e r , I n c . HARNETT COUNTY DUNN-ERWIN LANDFILL FACILITY LANDFILL GAS MONITORING PLAN LFG MONITORING LOCATIONSC.T.J. M.M.G. AS SHOWN 2 Jul 2016HARNETT-DE 13-2 HARNETT-B0102 Th i s p a g e i n t e n t i o n a l l y l e f t b l a n k . Attachment A Construction Record and Boring Log This page intentionally left blank. FIELD BOREHOLE LOG BOREHOLE NUMBER PROJECT NAME: LOCATION: DRILLING CO: DRILLING METHOD: FIELD PARTY: GEOLOGIST: DATE BEGUN: COMPLETED: TOTAL DEPTH: TOP OF CASING ELEV.: Depth (ft) Time Date STATIC WATER LEVEL (from ground) DE P T H BL O W C O U N T SA M P L I N G M E T H O D RE C O V E R Y CO N S T R U C T I O N DESCRIPTION LI T H O L O G Y WE L L IN S T A L L A T I O N 0.0 5.0 10.0 15.0 0.0 5.0 10.0 15.0 DE P T H Smith Gardner, Inc. 14 North Boylan Avenue, Raleigh NC 27603 (919) 828-0577 Page 1 of 1 GROUND ELEV.: NORTHING:EASTING:0 0 Pe r 6 " Fe e t (I n c h e s ) Fe e t Stickup: DE T A I L S GM-6A Hollow Stem Auger Landfill Gas Monitoring Dunn Erwin Landfill GeoTechnologies, Inc. Martin Moulds M. German 4/8/16 4/8/16 19 CLAYEY SAND: medium, red brown, fine to medium grained, clayey sand, dry SANDY CLAY: bright brown red, fine grained,sandy clay, small rock fragements, dry CLAY: light red brown clay nodulels, fine grained, dry CLAY: medium yellow tan, fine grained clay, cohesive, mosture beginning at 18ft bgs 3' This page intentionally left blank. Attachment B Abandonment Record This page intentionally left blank. This page intentionally left blank. Attachment C LFG Monitoring Plan This page intentionally left blank. Landfill Gas Monitoring Plan Harnett County Dunn-Erwin Landfill Facility Harnett County, North Carolina Prepared for: Harnett County Solid Waste Department Lillington, North Carolina July 2016 © 2016 Smith Gardner, Inc. This document is intended for the sole use of the client for which it was prepared and for the purpose agreed on by the client and Smith Gardner, Inc. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD This page intentionally left blank. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Landfill Gas Monitoring Plan Harnett County Dunn-Erwin Landfill Facility Harnett County, North Carolina Prepared For: Harnett County Solid Waste Department Lillington, North Carolina S+G Project No. HARNETT-DE Joan A. Smyth, P.G. Senior Hydrogeologist Pieter K. Scheer, P.E. Vice President, Senior Engineer July 2016 DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD 8/8/2016 8/8/2016 This page intentionally left blank. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Harnett County Dunn-Erwin Landfill Facility Landfill Gas Monitoring Plan July 2016 Table of Contents Page i Harnett County Dunn-Erwin Landfill Facility Harnett County, North Carolina Landfill Gas Monitoring Plan Table of Contents Page 1.0 INTRODUCTION ......................................................................................................... 1  1.1 Regulatory Requirements – C&D Landfills .............................................................. 1  1.2 Guidance Document .................................................................................................. 2  1.3 Contact Information .................................................................................................. 2  1.3.1 Owner ............................................................................................................ 2  1.3.2 Engineer ........................................................................................................ 2  1.3.3 North Carolina Department of Environmental Quality ................................ 3  1.4 Existing Site Conditions ............................................................................................. 3  1.4.1 Site Geology ................................................................................................... 3  1.4.2 Local Groundwater Regime .......................................................................... 3  2.0 MONITORING PROGRAM ........................................................................................... 4  2.1 Monitoring Wells ....................................................................................................... 4  2.2 Monitoring of Facility Structures .............................................................................. 4  2.3 Monitoring and Reporting ......................................................................................... 4  2.3.1 Frequency ...................................................................................................... 4  2.3.2 Personnel ...................................................................................................... 4  2.3.3 Equipment ..................................................................................................... 4  2.3.4 Procedures .................................................................................................... 5  2.3.5 Precautionary Action Plan ............................................................................ 6  2.3.6 Record Keeping ............................................................................................. 6  2.4 Maintenance .............................................................................................................. 7  3.0 CONTINGENCY PLAN ................................................................................................ 8  3.1 Immediate Action Plan .............................................................................................. 8  3.1.1 Reporting and Documentation ...................................................................... 8  3.2 Remediation Plan ...................................................................................................... 8  FIGURES Figure 1 Site Vicinity Map Figure 2 Landfill Gas Monitoring Locations Figure 3 Flowchart of Methane Monitoring Requirements APPENDIX Appendix A Reporting Forms DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Harnett County Dunn-Erwin Landfill Facility Landfill Gas Monitoring Plan July 2016 Table of Contents Page ii This page intentionally left blank. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Harnett County Dunn-Erwin Landfill Facility Landfill Gas Monitoring Plan July 2016 Page 1 1.0 INTRODUCTION This Landfill Gas (LFG) Monitoring Plan (plan) was prepared by Smith Gardner, Inc. to describe the LFG monitoring program at the Dunn-Erwin Landfill Facility (NC Solid Waste Permit 43-02), which is located at 449 Daniels Road in Dunn, North Carolina. The facility contains a closed unlined municipal solid waste (MSW) and construction & demolition (C&D) landfill units, an operating C&D landfill located on top of a closed unlined MSW landfill, and an operating MSW transfer station (NC Solid Waste Permit 43-07T). This plan describes the necessary procedures to satisfy applicable regulatory requirements (see 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, loss of property, 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 – C&D Landfills Rule 15A NCAC 13B .0544(d) of the North Carolina Solid Waste Management Rules requires the following for facilities having a C&D landfill:  Owners or operators of C&D landfill units must ensure that: o the concentration of methane gas or other explosive gases generated by the facility does not exceed 25% of the lower explosive limit (LEL) for methane (1.25% methane) in on-site facility structures (excluding gas control or recovery system components); o the concentration of methane gas or other explosive gases does not exceed the LEL for methane (5% methane) at the facility property boundary; and o the facility does not release methane gas or other explosive gases in any concentration that can be detected in off-site structures.  Owners or operators of C&D 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. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Harnett County Dunn-Erwin Landfill Facility Landfill Gas Monitoring Plan July 2016 Page 2 1.2 Guidance Document This plan was developed generally following the Landfill Gas Monitoring Guidance document prepared by the former North Carolina Department of Environment and Natural Resources (NC DENR), now the Department of Environmental Quality (DEQ), Division of Waste Management (DWM)1. 1.3 Contact Information Correspondence and questions concerning this plan should be directed to the appropriate contact below: 1.3.1 Owner Harnett County - Solid Waste Department 102 E. Front Street P.O. Box 2773 Lillington, North Carolina 27546 Phone: (910) 814-6156 Dunn Erwin Landfill Facility 449 Daniels Road Dunn, NC 28390 Phone: (910) 897-3222 Contacts: Amanda Bader, P.E., County Engineer abader@harnett.org Randy Smith, Solid Waste Operations Manager rwsmith@harnett.org 1.3.2 Engineer Smith Gardner, Inc. 14 N. Boylan Avenue Raleigh, North Carolina 27603 Phone: (919) 828-0577 Contacts: Joan A. Smyth, P.G., Senior Hydrogeologist joan@smithgardnerinc.com Pieter K. Scheer, P.E., Project Manager pieter@smithgardnerinc.com 1 NC DENR DWM (2010), “Landfill Gas Monitoring Guidance”, NC DENR DWM Solid Waste Section, November 2010. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Harnett County Dunn-Erwin Landfill Facility Landfill Gas Monitoring Plan July 2016 Page 3 1.3.3 North Carolina Department of Environmental Quality Division of Waste Management (DWM) - Solid Waste Section: North Carolina DEQ – Raleigh Central Office (RCO) 217 W Jones Street Raleigh, North Carolina 27603 Phone: (919) 707-8200 Contact: Ms. Elizabeth Werner Elizabeth.werner@ncdenr.gov 1.4 Existing Site Conditions The facility is located approximately eight miles north of downtown Dunn on Daniels Road. The properties immediately adjacent to the site are undeveloped or agricultural fields. Further from the property, rural residential properties exist along Turlington Road. The facility is located on approximately 325 acres owned by Harnett County. The permitted facility is bounded to the west by Stewart Creek, to the east by an unnamed creek, and south of the Active C&D over MSW by an unnamed tributary of Stewart Creek, which crosses through the central portion of the facility. Small ponds are located across the property as well as to the east, south and southeast. These existing water features create a natural barrier to LFG migration. Ground surface elevations range from approximately El. 180 (feet above mean sea level) along unnamed tributary around the site to El. 250 at the top of the closed MSW landfill unit. The facility location is shown on Figure 1. 1.4.1 Site Geology According to the 1985 North Carolina Geological Map the landfill is situated in the Coastal Plain Physiographic Province. The Dunn-Erwin area in Harnett County is underlain by the cretaceous age Middendorf formation that is primarily light gray sand, sandstone and mudstone which acts as a confining unit. The Middendorf formation was deposited in a deltaic system and varies from 15m to over 100m thick. 1.4.2 Local Groundwater Regime Groundwater depths generally range from 5 ft to 25 ft below ground surface (bgs) across the facility. Groundwater generally flows southwest toward the stream in the central portion of the site. There are minor seasonal variations in the flow pattern, but overall flow direction is consistent. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Harnett County Dunn-Erwin Landfill Facility Landfill Gas Monitoring Plan July 2016 Page 4 2.0 MONITORING PROGRAM The plan contained herein includes landfill gas monitoring to monitor subsurface landfill gas migration in well and on-site structures. LFG monitoring locations are shown on Figure 2. 2.1 Monitoring Wells The close location of streams to the east, south and west of the active C&D over closed MSW landfill limit the possibility of landfill gas migration in these directions. Therefore, landfill gas is only monitored along the northern side of the facility. The landfill gas monitoring network includes three existing wells (GM-2, GM-6A and GM-7). 2.2 Monitoring of Facility Structures The following facility structures will be monitored:  Scalehouse; and  Maintenance building. If desired by the County, a dedicated methane monitor may be installed within one or more of these structures. 2.3 Monitoring and Reporting LFG concentration monitoring and reporting will be performed as outlined below. 2.3.1 Frequency Routine LFG monitoring will be conducted on a quarterly basis. 2.3.2 Personnel LFG monitoring will be performed by personnel who are familiar with the paln requirements 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. 2.3.3 Equipment An infrared portable gas analyzer will be used to collect measurements from the landfill gas monitoring network. This analyzer, 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. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Harnett County Dunn-Erwin Landfill Facility Landfill Gas Monitoring Plan July 2016 Page 5 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. 2.3.4 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 (see Appendix A). The following steps outline the procedure for the monitoring of LFG wells and facility structures:  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 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 A. o If any methane concentration is greater than 50% of the LEL (2.5% CH4), monitoring personnel should implement the Precautionary Action Plan (see Section 2.3.5). 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 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 DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Harnett County Dunn-Erwin Landfill Facility Landfill Gas Monitoring Plan July 2016 Page 6 concentrations, oxygen concentration and carbon dioxide concentration. o Record monitoring data on the LFG monitoring data form provided in Appendix A. o Notify the Solid Waste 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 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 County Engineer, Solid Waste Operations Manager and the Engineer. 3) Implement the Compliance Action Plan located in Section 3.1. A flowchart of propsed action for noted exceedances is presented as Figure 3. 2.3.5 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 asphyxiation. Note stressed/dead vegetation areas on the monitoring form.  Notify the County Engineer, Solid Waste Operations Manager and the Engineer for further evaluation. 2.3.6 Record Keeping Routine LFG monitoring events will be documented on the LFG monitoring data form provided in Appendix A. Completed forms will be placed in the landfill operating record located at the landfill office and/or Harnett County Solid Waste Department office at 103 E. Ivy Street, Lillington, North Carolina 27546. These forms will be available for review by DWM personnel on request. Documentation of any contingency plan actions (see Section 3.0) will also be kept in the operating record. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Harnett County Dunn-Erwin Landfill Facility Landfill Gas Monitoring Plan July 2016 Page 7 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 County Engineer and Solid Waste Operations Manager for repair or replacement as necessary. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Harnett County Dunn-Erwin Landfill Facility Landfill Gas Monitoring Plan July 2016 Page 8 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, the County will perform both an immediate action and plan and a remediation plan as described below and as summarized on Figure 3. 3.1 Immediate Action Plan The Solid Waste 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 other facility structure near the monitoring location having the high concentration. 4) Contact the County Fire Department (911). Coordinate evaluation of potentially affected off-site structures with the Fire Department. 5) Verbally notify the County Engineer, or his designee. 6) Verbally notify the NCDEQ DWM (see 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 the LFG may be following 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, evaluate corrective actions to control methane concentrations in structures surrounding the landfill site. 3.1.1 Reporting and Documentation Within seven days of the high methane concentration detection, the County will prepare and submit an Environmental Monitoring Reporting Form (see Appendix A) with the monitoring event results 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 a high methane concentration detection, a remediation plan describing the problem nature, extent, and proposed remedy will be prepared and submitted to 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 once the plan has been implemented. An extension may be requested from the DWM depending on severity of the situation. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Figures Landfill Gas Monitoring Plan Harnett County Dunn-Erwin Landfill Facility Harnett County, North Carolina DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD This page intentionally left blank. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Copyright:© 2013 National Geographic Society, i-cubed G :\C A D \H a r n e t t C o u n t y \H a r n e t t -D E 1 4 -1 \s h e e t s \H A R N E T T -A 0 0 2 9 .m x d DRAWN:APPROVED:SCALE:FIGURE NO.:PROJECT NO.:DATE: J.A.L.M.M.G.1AS SHOWN May. 2014 HARNETT-DE 14-1 HARNETT COUNTY DUNN-ERWIN LANDFILL FACILITY LANDFILL GAS MONITORING PLAN SITE VICINITY MAP ³ 0 1,000 2,000 3,000 4,000Feet SITE LOCATION N C 5 5 R E D H I L L C H U R C H R D ASHE AVE D A N I E L S R D TURLINGTON RD DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD This page intentionally left blank. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD G: \ C A D \ H a r n e t t C o u n t y \ H a r n e t t - D E - 1 3 - 2 \ s h e e t s \ H A R N E T T - B 0 1 0 2 . d w g - 7/ 2 6 / 2 0 1 6 1 1 : 0 0 A M DR A W N : AP P R O V E D : PR O J E C T N O : SC A L E : FI L E N A M E : DA T E : FIG U R E N O . PR E P A R E D B Y : PR E P A R E D F O R : SM I T H 14 N . B o y l a n A v e n u e , R a l e i g h N C 2 7 6 0 3 NC L I C . N O . C - 0 8 2 8 ( E N G I N E E R I N G ) 91 9 . 8 2 8 . 0 5 7 7 GA R D N E R + © 2016 Smith Gardner, Inc. HA R N E T T C O U N T Y DU N N - E R W I N L A N D F I L L F A C I L I T Y LA N D F I L L G A S M O N I T O R I N G P L A N LF G M O N I T O R I N G L O C A T I O N S C. T . J . M. M . G . AS S H O W N 2 Ju l 2 0 1 6 HA R N E T T - D E 1 3 - 2 HA R N E T T - B 0 1 0 2 DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Th i s p a g e i n t e n t i o n a l l y l e f t b l a n k . Do c u S i g n E n v e l o p e I D : 1 0 9 8 7 D 6 6 - 7 2 1 B - 4 A 3 F - A 5 6 D - E 3 3 F F A 8 C D D D D DRAWN:APPROVED: SCALE: DATE: PROJECT NO.: FIGURE NO.: FILE NAME: PREPARED FOR:PREPARED BY: SMITH GARDNER+ G :\C AD \Ha r n e t t C ou n t y\ Ha r n e t t - D E 1 4 - 1 \sh e e t s \HA R N E T T - A 0 0 2 1 . d w g - 5 / 1 7 / 2 0 1 6 4 : 3 7 P M ©2016 Smith Gardner, Inc. HARNETT COUNTY, NC DUNN-ERWIN LANDFILL FACILITY FLOWCHART OF METHANE MONITORING REQUIREMENTS C.T.J. J.A.S. N.T.S.HARNETT-DE-14-1 3 HARNETT-A0021May 2016 Q DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD This page intentionally left blank. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD Appendix A Reporting Forms Landfill Gas Monitoring Plan Harnett County Dunn-Erwin Landfill Facility Harnett County, North Carolina DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD This page intentionally left blank. DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD   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 DocuSign Envelope ID: 10987D66-721B-4A3F-A56D-E33FFA8CDDDD