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HomeMy WebLinkAbout2906_DavidsonMSW_Phase2WQMonitorPlan_DIN28670_20180131Water Quality 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 Revised January 2018 F-1370 F-1370 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 1/31/2018 1/31/2018 This page intentionally left blank. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September 2017 Table of Contents Page i Davidson County MSW Landfill - Phase 2 Davidson County, North Carolina Water Quality Monitoring Plan Table of Contents Page 1.0 INTRODUCTION ......................................................................................................... 1  1.1 Regulatory Requirements ......................................................................................... 1  1.2 Guidance Documents ................................................................................................ 2  1.3 Contact Information .................................................................................................. 3  1.3.1 Owner ............................................................................................................ 3  1.3.2 Engineer ........................................................................................................ 3  1.3.3 North Carolina Department of Environmental Quality (NC DEQ) ................ 4  1.4 Existing Site Conditions ............................................................................................. 4  1.4.1 Site Geology ................................................................................................... 5  1.4.2 Site Hydrogeology ......................................................................................... 5  2.0 MONITORING PROGRAM ........................................................................................... 7  2.1 Monitoring Frequency ............................................................................................... 7  2.2 Monitoring Network and Analytical Parameters ..................................................... 7  2.2.1 Modifications to Monitoring Network ........................................................... 8  2.2.2 Analytical Parameters .................................................................................. 8  2.3 Groundwater Sample Collection ............................................................................... 9  2.3.1 Monitoring Conditions and Observations ..................................................... 9  2.3.2 Fuel Powered Equipment ............................................................................. 9  2.3.3 Equipment Decontamination ........................................................................ 9  2.3.4 Water Level Measurements ........................................................................ 10  2.3.4.1 Static Water Levels ....................................................................... 10  2.3.4.2 Contamination Prevention ............................................................ 10  2.3.4.3 Equipment ..................................................................................... 11  2.3.5 Monitoring Well Evacuations ...................................................................... 11  2.3.5.1 Contamination Prevention ............................................................ 11  2.3.5.2 Calculations .................................................................................. 11  2.3.5.3 Well Purging ................................................................................. 12  2.3.5.4 Purge Rate .................................................................................... 14  2.3.5.5 Purge Water Disposal ................................................................... 14  2.3.5.6 Non-Dedicated Equipment ........................................................... 14  2.3.6 Sample Collection ....................................................................................... 14  2.3.6.1 Field Parameters .......................................................................... 15  2.3.6.2 Sample Equipment ....................................................................... 15  2.3.6.3 Sample Transference ................................................................... 16  2.3.6.4 Sample Collection Order .............................................................. 16  DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September 2017 Table of Contents Page ii 2.3.6.5 Decontamination .......................................................................... 17  2.3.6.6 Sample Preservation .................................................................... 17  2.3.6.7 Field Quality Assurance ................................................................ 17  2.3.6.8 Sample Containers ....................................................................... 17  2.4 Surface Water Sample Collection ........................................................................... 18  2.4.1 Monitoring Conditions and Observations ................................................... 18  2.4.2 Sampling Station Modifications .................................................................. 18  2.4.3 Sample Collection ....................................................................................... 18  2.4.3.1 Collection Procedure .................................................................... 18  2.4.3.2 Field Parameters .......................................................................... 19  2.4.3.3 Sample Collection Order .............................................................. 19  2.4.3.4 Decontamination .......................................................................... 20  2.4.3.5 Sample Preservation .................................................................... 20  2.4.3.6 Sample Containers ....................................................................... 20  3.0 FIELD QA/QC PROGRAM .......................................................................................... 21  3.1 Blank Samples ........................................................................................................ 21  3.1.1 Trip Blanks .................................................................................................. 21  3.1.2 Equipment Blanks ....................................................................................... 21  3.1.3 Field Blanks ................................................................................................. 21  3.1.4 Blank Concentrations ................................................................................. 21  3.1.5 Field Instruments ........................................................................................ 22  4.0 SAMPLE PRESERVATION AND SHIPMENT .............................................................. 23  4.1 Sample Preservation ............................................................................................... 23  4.2 Storage/Transport Conditions ................................................................................ 23  4.3 Sample Delivery ....................................................................................................... 23  4.4 Chain of Custody ...................................................................................................... 23  5.0 LABORATORY ANALYSIS ......................................................................................... 25  5.1 Laboratory Quality Assurance/Quality Control ...................................................... 25  5.2 Data Review ............................................................................................................. 25  6.0 RECORD KEEPING AND REPORTING ....................................................................... 27  6.1 Field Logbook .......................................................................................................... 27  6.2 Groundwater Flow Evaluation ................................................................................. 27  6.3 Reporting ................................................................................................................. 28  7.0 MONITORING PROGRAM MODIFICATIONS .............................................................. 29  7.1 Plan Modifications and Updates ............................................................................. 29  7.2 Well Abandonment/Rehabilitation .......................................................................... 29  7.3 Additional Well Installations ................................................................................... 29  7.4 Implementation Schedule ....................................................................................... 29  DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September 2017 Table of Contents Page iii Table of Contents Continued TABLES Table 1 Monitoring Well Construction Information Table 2 Analytical Parameters FIGURE Figure 1 Water Quality Monitoring Network Figure 2 Potentiometric Surface Map – September 2017 APPENDICIES Appendix A Boring Logs Appendix B Environmental Monitoring Report Form DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September 2017 Table of Contents Page iv This page intentionally left blank. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 1 1.0 INTRODUCTION This Water Quality Monitoring Plan (WQMP) was prepared by Smith Gardner, Inc. to describe the water quality monitoring program for the Davidson County Phase 2 Municipal Solid Waste (MSW) Landfill (NC Solid Waste Permit 29-06), which is located off of Old U.S. Highway 29 in Thomasville, North Carolina. This plan describes the necessary procedures to satisfy applicable regulatory requirements (Section 1.1) and guidance documents (Section 1.2) for groundwater and surface water quality monitoring. The methods and procedures described in the WQMP are intended to facilitate the collection of true and representative samples and test data. Field procedures are presented in Section 2.0 in their general order of implementation. Equipment requirements for each field task are presented within the applicable section. Quality assurance/quality control methods, sample preservation and shipment, laboratory procedures, and record keeping requirements are presented in Sections 3.0 through 6.0. Section 7.0 addresses monitoring plan modifications and schedule. Strict adherence to the procedures stipulated in this plan is required. Any variations from these procedures should be thoroughly documented and may require approval of the North Carolina Department of Environmental Quality (NC DEQ), Division of Waste Management (DWM) prior to implementation. 1.1 Regulatory Requirements This WQMP specifies the procedures and methods to satisfy North Carolina Solid Waste Management Rules 15A NCAC 13B.1631, .1632, and .1633 (MSW Landfills); and .0602 (Surface Water Monitoring), which include the following requirements for detection monitoring:  Represent the quality of the background groundwater that has not been affected by leakage from the unit. (.1631 (a)(1))  Represent the quality of the groundwater passing the relevant point of compliance as approved by the Division. (.1631 (a)(2))  The groundwater monitoring programs must include consistent sampling and analysis procedures that are designed to ensure monitoring results that provide an accurate representation of groundwater quality at the background and down- gradient wells. (.1632 (a))  The monitoring programs must include sampling and analytical methods that are appropriate for groundwater sampling and that accurately measure target constituents and other monitoring parameters in groundwater samples. (.1632 (b))  The sampling procedures and frequency must be protective of human health and the environment. (.1632 (c)) DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 2  Determine groundwater elevations. (.1632 (d))  Establish background quality data. (.1632 (e))  Any statistical analysis. 0.1632 (g) and (h)  Detection groundwater monitoring program. (.1633)  Surface water monitoring plan. Responsibility of sample collection and analysis must be defined as a part of the monitoring plan. (.0602) 1.2 Guidance Documents This plan was developed in general accordance with the following guidance documents prepared by the North Carolina Department of Environmental Quality (NC DEQ), Division of Waste Management (DWM): 1. NC DENR Guidance Document entitled “Groundwater, Surface Water, and Soil Sampling for Landfills”, April 2008. 2. NC DENR Memo entitled "New Guidelines for Electronic Submittal of Environmental Monitoring Data", October 27, 2006. 3. NC DENR Memo entitled “Addendum to October 27, 2006, North Carolina Solid Waste Section Memorandum Regarding New Guidelines for Electronic Submittal of Environmental Data”, February 23, 2007. 4. NC DENR Memo entitled “Environmental Monitoring Data for North Carolina Solid Waste Management Facilities”, October 16, 2007. 5. Solid Waste Environmental Data Form, June 10, 2009. 6. Electronic Data Deliverable (EDD) Template, May 5, 2010. 7. NCDEQ Memo entitled “Groundwater, Surface Water, Soil, Sediment, and Landfill Gas Electronic Document Submittal”, November 5, 2014. 8. NCDEQ Memo entitled “Permanent and Temporary Groundwater and Landfill Gas Monitoring Wells, Piezometers and Probes”, March 23, 2017. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 3 1.3 Contact Information 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: (336) 242-2008 Contact: Rex Buck, Public Services Director rex.buck@davidsoncountync.gov 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: (336) 224-5376 Contact: Steven Sink, Operations Manager steven.sink@davidsoncountync.gov 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., Senior Engineer pieter@smithgardnerinc.com DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 4 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: (919) 707-8200 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: (336) 776-9800 Contact: Environmental Senior Specialist: Susan Heim 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 U.S. 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 El. 650 feet amsl 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 closed C&D landfill, the closed unlined MSW landfill units and a leachate storage pond are located south of the railroad tracks. The active 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 U.S. 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. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 5 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. 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 Site Hydrogeology In the uppermost aquifer, groundwater 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 Phase 2 Area 3 facility. 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 groundwater divide at its center. Groundwater and DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 6 surface water in Area 3 drain in a general west and northwestern direction ultimately discharging in Rich Fork Creek. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 7 2.0 MONITORING PROGRAM This section of the Water Quality Monitoring Plan addresses each aspect of the monitoring program including monitoring frequency, monitoring network and analytical parameters, and sample collection procedures. 2.1 Monitoring Frequency At a minimum, the County will perform water quality monitoring on a semi-annual basis through the stipulated post-closure period for the landfill. 2.2 Monitoring Network and Analytical Parameters A review of historical water level data indicates that groundwater is flowing to the east at both the MSW and C&D landfills toward the discharge point of Rich Fork Creek. There are 15 existing monitoring locations for the Phase 2 MSW landfill. Four piezometers are proposed for conversion to monitoring wells for inclusion in the MSW landfill monitoring network. Modifications from the prior monitoring network are discussed in detail in Section 2.2.1. The monitoring network is summarized in the table below. MSW Landfill Monitoring Network Well Location Sampling Frequency Analytical Parameters MW-1 Upgradient Semi-Annual Appendix I + Field MW-2 Downgradient Semi-Annual Appendix I + Field MW-3S Downgradient Semi-Annual Appendix I + Field MW-3D Downgradient - bedrock Semi-Annual Water Level Only MW-4S Downgradient Semi-Annual Appendix I + Field MW-4D Downgradient - bedrock Semi-Annual Water Level Only MW-5 Downgradient Semi-Annual Appendix I + Field MW-6S Downgradient Semi-Annual Appendix I + Field MW-8 Downgradient Semi-Annual Appendix I + Field MW-9 Downgradient Semi-Annual Appendix I + Field MW-10S Downgradient Semi-Annual Appendix I + Field MW-10D Downgradient - bedrock Semi-Annual Water Level Only MW-11S* Downgradient Semi-Annual Appendix I + Field MW-11D* Downgradient - bedrock Semi-Annual Water Level Only MW-12* Downgradient Semi-Annual Appendix I + Field MW-13* Downgradient Semi-Annual Appendix I + Field SW-1 Upgradient Rich Fork Creek Semi-Annual Appendix I + Field SW-2 Downgradient Rich Fork Creek Semi-Annual Appendix I + Field Leachate Storage Tanks Semi-Annual Appendix I + Leachate 1. Appendix I parameters are presented in Table 1. 2. Water Level Only – Bedrock wells will be monitored for water levels only. Should analysis of upper aquifer wells associated with the bedrock wells DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 8 indicate impact from the landfill, these wells will be considered for future sampling/analysis. 3. Leachate Parameters include BOD, COD, phosphate, nitrate, sulfate, and pH. 4. * indicates proposed Monitoring Location Monitoring locations are shown on Figure 1. Refer to Tables 1 and 2 for monitoring well construction details and monitored analytical parameters, respectively. Boring Logs are provided in Appendix A. 2.2.1 Modifications to Monitoring Network The following modifications are proposed for the monitoring network. Please note due to the groundwater divide and the primary flow direction north, the primary groundwater monitoring wells are located north of Phase 2. Monitoring wells MW-11S, MW-11D (water level only), MW-12 and MW-13 will be added to the groundwater monitoring network for this site. These wells will be converted from existing piezometers PZ-45S, PZ-45D, PZ-46 and PZ-51, respectively. These piezometers were installed downgradient of the proposed Area 2. MW-11S, MW-11D and MW-12 are positioned north of Phase 2 Cell 3. MW-11S was advanced to 52 feet below ground surface (bgs) and is screened in Clayey silt. MW-11D was advance to 69 ft. bgs and is screened entirely within bedrock. MW-12 is screened from 20-30 ft. bgs in clay. MW-13 is positioned south of Phase 2 Cell 3 and was advanced to 18 ft bgs, it is screened in silt and partially weathered rock (PWR). The bedrock aquifer wells (MW-3d, MW-4d, and MW-10D) will continue to be water level only locations unless the upper aquifer wells associated with these bedrock wells (MW-3s, MW-4s, or MW-10s) indicate groundwater quality impact from the landfill; then these bedrock aquifer wells will be considered for water quality sampling and analysis. No additional surface water monitoring locations are proposed at this time. 2.2.2 Analytical Parameters Groundwater and surface water samples will be analyzed semi-annually for Appendix I volatile organic compounds (VOCs), metals and the following field parameters:  Temperature;  pH;  Specific Conductivity; and  Turbidity. The list of monitored Appendix I parameters in presented as Table 2. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 9 2.3 Groundwater Sample Collection This section presents the procedures and equipment required to perform groundwater field measurements and sampling from monitoring wells during each monitoring event. Where possible, sampling will proceed from the upgradient (background) wells to downgradient (compliance) wells or, when data is available, from least to most contaminated. 2.3.1 Monitoring Conditions and Observations The following measurements will be recorded in a dedicated field logbook prior to sample collection:  Depth to static water level and well bottom (to the nearest 0.01 foot);  Water column height in the riser (based on measured well depth);  Monitoring well condition (well locks, steel casing, concrete pad, etc.); and  Monitoring location conditions, including access and surroundings. Report to the Operations Manager any observed maintenance or access issues observed. Field activity documentation will be in accordance with Section 6.1. 2.3.2 Fuel Powered Equipment Fuel-powered equipment, such as generators or compressors for pumps, must be situated away and downwind from sampling activities. If field conditions prevent such placement, then the fuel source must be placed as far away as possible from the sampling activities. Sampling conditions must be described in detail in the field notes. If fuel must be handled, it should be done the day before sampling. Effort should be made to avoid handling fuels on the day of sampling. If fuels must be dispensed during sampling activities, dispense fuel downwind and well away from any sampling locations. Wear gloves while working with fuel and dispose of the gloves away from sampling activities. Wash hands thoroughly after handling any fuels. 2.3.3 Equipment Decontamination Non-dedicated equipment that may come in contact with the well casing and water will be decontaminated between wells. The procedure for decontaminating non-dedicated equipment is as follows: 1. Don new powder-free gloves. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 10 2. Clean item with tap water and phosphate-free laboratory detergent (Liqui-Nox or equivalent) using a brush if necessary to remove particulate matter and surface films. 3. Rinse thoroughly with pesticide grade isopropanol and allow to air dry. 4. Rinse with organic-free water (Milli-Q water or other ultra-pure water) and allow to air dry. 5. Wrap with commercial-grade aluminum foil, if necessary, to prevent equipment contamination during storage or transport. Liqui-Nox detergent solutions should be stored in a clearly marked High-Density Polyethylene (HDPE) or Polypropylene (PP) container. Containers for pesticide- grade isopropanol will be made of inert materials such as Teflon, stainless steel, or glass. Using dedicated sampling equipment or new disposable Teflon bailers at each well should minimize the need for decontamination in the field. Unclean equipment will be segregated from clean equipment during field activities. Clean equipment will remain in the manufacturer's packaging until use, or will be wrapped in commercial-grade aluminum foil or untreated butcher paper. 2.3.4 Water Level Measurements 2.3.4.1 Static Water Levels Static water level and depth to the well bottom will be measured in each well prior to purging or sampling activities. Static water level and well depth measurements are necessary to calculate the static water volume in the well prior to purging. Additionally, these measurements provide a field check on well integrity, degree of siltation, and are used to prepare potentiometric maps, calculate aquifer flow velocities, and monitor changes in site hydrogeologic conditions. Groundwater depths will be measured to a vertical accuracy of 0.01 feet relative to established wellhead elevations. Each well will have a permanent, easily identified reference point, established by a Registered Land Surveyor on the well riser lip from where measurements will be gauged. 2.3.4.2 Contamination Prevention New, powder-free, surgical gloves will be donned for each sampling location. Appropriate measures will be implemented during measurement activities to minimize the potential for soils, DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 11 decontamination supplies, precipitation, and other potential contaminants from entering the well or contacting clean equipment. 2.3.4.3 Equipment An electronic water level indicator, constructed of inert materials, such as stainless steel and Teflon, will be used to measure depth to groundwater in each well and/or piezometer. Between each well, the device will be thoroughly decontaminated by washing with non- phosphate (Liqui-Nox) soap and rinsing with organic-free water to prevent cross contamination from one well to another. 2.3.5 Monitoring Well Evacuations Water accumulated in each well may be stagnant and unrepresentative of surrounding aquifer conditions. Therefore, this water must be removed to ensure that fresh formation water is sampled. Following static water level measurement the standing water in the well casing will be purged. Monitoring well evacuation should be performed in up-gradient wells first systematically moving to down-gradient well locations. 2.3.5.1 Contamination Prevention New, powder-free, surgical gloves will be donned for well purging and sampling activities and whenever handling decontaminated field equipment. Appropriate procedures during measurement, purging, and sampling activities will be used to minimize the potential for surface soils, decontaminated supplies, precipitation, and/or other potential contaminants from entering the well or contacting cleaned equipment. 2.3.5.2 Calculations The standing water volume in the well riser and screen will be calculated immediately before well evacuation during each monitoring event if standard purging techniques are utilized. A standing water volume will be calculated for each well using measured static water level, well depth, and well casing diameter according to the following equation: V= ሺTD-SWLሻC where: V = one well volume (gallons) TD = total well depth (feet) SWL = static water level (feet) C = volume constant for given well diameter (gallons/ft) C = 0.163 gallons/ft for two-inch wells DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 12 C = 0.653 gallons/ft for four-inch wells 2.3.5.3 Well Purging Equipment Several options for well purging may be used at this site including:  Disposable Bailers;  Low Flow Pumps; and  Grundfos Redi-Flo Pumps. Disposable Bailers: Where bailers are used, new, disposable bailers with either double or bottom check-valves will be used to purge each well. Disposable purge bailers will be constructed of fluorocarbon resin (Teflon) or inert plastic suitable for the well and ground conditions. Each bailer will be factory-cleaned and remain sealed in a plastic sleeve until use. A new Teflon-coated stainless steel, inert mono-filament line or nylon cord will be used for each well to retrieve the bailers. Where bailers are used, a minimum of three well volumes will be purged unless the well runs dry. Low Flow Pumps: Monitoring wells may be purged and sampled using the low-flow sampling method in accordance with DWM guidance (”Groundwater, Surface Water, and Soil Sampling for Landfills” (NCDEQ, 2008) (Section 1.2)). Grundfos Redi-Flo Pumps: Where Redi-Flo pumps are used, the same low flow techniques for sampling will be used. See above for a purging/sampling technique summary. Technique Depth-to-water measurements will be obtained using an electronic water level indicator capable of recording the depth to an accuracy of 0.01 foot (Section 2.3.4). A determination of whether or not the water table is located within the screened interval of the well will be made. If the water table is not within the screened interval, the amount of drawdown that can be achieved before the screen is intersected will be calculated. If the water table is within the screened interval, total drawdown should not exceed 1 foot to minimize the aeration and turbidity. If the water table is above the screened interval, the drawdown amount should be minimized to keep the screen from being exposed. If the purging equipment is non-dedicated, the equipment will be lowered into the well in a manner to minimize the water column disturbance. If conditions (i.e., water column height and well yield) allow, the pump will be placed in the uppermost portion of the water column (minimum of 18 inches of pump submergence is recommended). DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 13 The minimum volume/time period for obtaining independent Water Quality Parameter Measurements (WQPM) will be determined based on the stabilized flow rate and the volume in the pump and the discharge tubing. The bladder pump volume should be obtained from the manufacturer. Alternately, if a continuous read flow-cell is used, it can indicate when WQPM should be obtained, as long as the purged volume is equal to or greater than the calculated volume. Discharge tubing volumes are as follows: 3/8-inch inside diameter tubing: 20 milliliters per foot 1/4-inch inside diameter tubing: 10 milliliters per foot 3/16-inch inside diameter tubing: 5 milliliters per foot Begin the well purge following calculations to determine the volume of the flow-cell or the pump and the discharge tubing. The flow rate should be based on historical data for each individual well (if available) and should not exceed 500 milliliters per minute. The initial round of WQPM should be recorded and the flow rate adjusted until drawdown in the well stabilizes. Water levels should be measured periodically to maintain a stabilized water level. The water level should not fall within one foot of the top of the well screen. If the purge rate has been reduced to 100 milliliters or less and the head level in the well continues to decline, the required water samples should be collected following WQPM stabilization, based on the criteria presented below. If neither the head level nor the WQPM stabilize, a passive sample should be collected. Passive sampling is defined as sampling before WQMP have stabilized if the well yield is low enough that the well will purge dry at the lowest possible purge rate (generally 100 milliliters per minute or less). WQPM stabilization is defined as: pH (+/- 0.2 S.U.), conductance (+/- 5% of reading), temperature (+/- 10% of reading or 0.2oC), and dissolved oxygen (DO) [+/- 20% of reading or 0.2 mg/L (whichever is greater)]. Oxidation reduction potential (ORP) will be measured and ideally should also fall within +/- 10mV of reading; however, this is not a required parameter. At a minimum, turbidity measurements should also be recorded at the beginning of purging, following WQPM stabilization, and following sample collection. The optimal turbidity range for micropurging is 25 Nephelometric Turbidity Units (NTU) or less. Turbidity measurements above 25 NTU are generally indicative of an excessive purge rate or natural conditions related to excessive fines in the aquifer matrix. WQPM stabilization should occur in most wells within five to six rounds of measurements. If stabilization does not occur following the removal of a DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 14 purge volume equal to three well volumes, a passive sample will be collected. The direct-reading equipment used at each well will be calibrated in the field according to the manufacturer’s specifications prior to each day’s use and checked, at a minimum, at the end of each sampling day. Calibration information should be documented in the instrument’s calibration logbook and field logbook/notes. Each well is to be sampled immediately following WQPM stabilization. The sampling flow rate must be maintained at a rate less than or equal to the purging rate. For volatile organic compounds, lower sampling rates (100 - 200 milliliters/minute) should be used. Final field parameter readings should be recorded prior to and after sampling. 2.3.5.4 Purge Rate Wells will be purged at a rate that will not cause recharge water to be excessively agitated or cascade through the screen. Care to minimize disturbance to the well sidewalls and bottom that could result in the silt and fine particulate matter becoming suspended. The purged water volume from each well and the relative recharge rate will be documented in sampling field notes/book. Wells which have very low recharge rates will be purged once until dry. Damaged, dry, or low yielding and high turbidity wells will be documented for reconsideration before the next sampling event. 2.3.5.5 Purge Water Disposal Purge water will be managed to prevent possible soil and surface water contamination. Well site management options may include temporary containment and disposal as leachate or portable activated carbon filtration if warranted by field characteristics. 2.3.5.6 Non-Dedicated Equipment Durable, non-dedicated equipment lowered into the well or that may come in contact with the water samples, will be disassembled to the degree practical and decontaminated before each use. Equipment decontamination procedures are described in Section 2.3.3. 2.3.6 Sample Collection After purging, groundwater samples will be collected for laboratory analysis. As much as practical, samples should be collected from least contaminated location(s) first, followed by locations of increasing contamination across the site. Prior to sample collection, sample labels should be properly filled-out with DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 15 permanent ink. At a minimum, the label should identify the sample with the following information:  Site Name;  Sample Location or Well Number;  Date and Time of Collection;  Analysis Required;  Sampler's Initials;  Preservative Used (if any); and  Other Pertinent Information, as Necessary. Completed sample labels should be affixed to the sample bottle prior to sampling. Sampling will occur within 24-hours of well purging and as soon after well recovery as possible. Wells which fail to recharge or produce an adequate sample volume within 24 hours of purging will not be sampled. 2.3.6.1 Field Parameters Field measurements to determine temperature, pH, and specific conductivity will be recorded immediately prior to sampling each monitoring location. Turbidity measurements should be collected for metals evaluation. The field test specimens will be collected with the sampling bailer and placed in a clean, non-conductive glass or plastic container for observation. Temperature, pH, conductivity, and turbidity meter calibration will be performed according to the manufacturers' specifications and consistent with Test Methods for Evaluating Solid Waste -Physical/Chemical Methods (SW-846). A pocket thermometer and litmus paper will be available in case of meter malfunction. 2.3.6.2 Sample Equipment Several options for sample collection are available for this site including:  Disposable Bailers;  Low Flow Pumps; and  Grundfos Redi-Flo Pumps. These are each discussed in greater detail below. Disposable Bailers: Where bailers are used, each well will be sampled using a new, factory-cleaned, disposable Teflon bailer with bottom check- valve and sample discharge mechanism. A new segment of Teflon- coated stainless steel wire, inert mono-filament line or nylon cord will be used to lower and retrieve each bailer. The bailer will be lowered into each well to the point of groundwater contact and then allowed to fill as it DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 16 sinks below the water table. Bottom contact will be avoided to avoid suspending sediment in the samples. The bailer will be retrieved and emptied in a manner which minimizes sample agitation. Low Flow Pumps: Following purging with the low flow pump systems, samples may be collected immediately from the pumping system. Samples are to be collected in the order outlined in Section 2.3.6.4. Grundfos Redi-Flo Pumps: Following purging of three well volumes, samples may be collected from the Redi-Flo pumps. Samples will be collected in the order outlined in Section 2.3.6.4. 2.3.6.3 Sample Transference Samples will be transferred directly from the disposable bailer or pump discharge tubing into a sample container that has been specifically prepared for the preservation and storage of compatible parameters. A bottom emptying device provided will be used to transfer samples from bailer to sample container. The generation air bubbles and sample agitation will be minimized during bailer discharge. 2.3.6.4 Sample Collection Order Groundwater samples will be collected in the order of volatilization sensitivity. When collected, the following sampling order will be observed:  Volatile Organics and Volatile Inorganics;  Extractable Organics, Petroleum Hydrocarbons, Aggregate Organics, and Oil and Grease;  Total Metals;  Inorganic Nonmetallics, Physical and Aggregate Properties, and Biologicals;  Microbiological; and  Other Parameters (as applicable). Note: If the pump used to collect groundwater samples is not suitable to collect volatile or extractable organics then collect other parameters and withdraw the pump and tubing, then collect the volatile and extractable organics. Samples will be collected and analyzed in an unfiltered state. Dissolved metal analysis samples, if subsequently required, will be prepared by field filtration using a decontaminated peristaltic pump and a disposable 0.45 micron filter cartridge specifically manufactured for this purpose. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 17 2.3.6.5 Decontamination Reusable sampling equipment including water level probes, water quality meters, interface probes, and filtering pumps which might contact aquifer water or samples will be thoroughly decontaminated between wells by washing with non-phosphate soapy, organic free water (Milli-Q or equivalent) and rinsing with isopropanol and organic-free water. Equipment decontamination procedures are detailed in Section 2.3.3. 2.3.6.6 Sample Preservation Following sampling at each location, the sample bottles will be placed in a cooler with ice for preservation. 2.3.6.7 Field Quality Assurance Blank samples will be prepared, handled, and analyzed as groundwater samples to ensure cross-contamination has not occurred. One set of trip blanks, as described in Section 3.1.1, will be prepared before leaving the laboratory to ensure that the sample containers or handling processes have not affected the sample quality. One set of equipment blanks will be created in the field at the time of sampling to ensure that the field conditions, equipment, and handling during sampling collection have not affected the sample quality. Equipment blanks are discussed in Section 3.1.2. A duplicate groundwater sample may be collected from a single well as a laboratory accuracy check. Blanks and duplicate containers, preservatives, handling, and transport procedures for surface water samples will be identical to those described for groundwater samples. 2.3.6.8 Sample Containers Sample containers will be provided by the laboratory for each sampling event. Containers must be either new, factory-certified analytically clean by the manufacturer, or cleaned by the laboratory prior to shipment for sampling. Laboratory cleaning methods will be based on the bottle type and analyte of interest. Metal containers are thoroughly washed with non-phosphate detergent and tap water and rinsed with (1:1) nitric acid, tap water, (1:1) hydrochloric acid, tap water, and non-organic water, in that order. Organic sample containers are thoroughly washed with non- phosphate detergent in hot water and rinsed with tap water, distilled water, acetone, and pesticide quality hexane, in that order. Other sample containers are thoroughly washed with non-phosphate detergent and tap water, and rinsed with tap water and non-organic water. The laboratory will provide proper preservatives in the sample containers prior to shipment (Section 4.0). DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 18 2.4 Surface Water Sample Collection This section presents the procedures and equipment required to perform surface water field measurements and sampling from springs, streams, and ponds during each monitoring event. 2.4.1 Monitoring Conditions and Observations Surface water quality analyses are particularly sensitive to site hydrologic conditions and recent precipitation events. Water levels may fluctuate significantly in comparison the groundwater table and may result in either diluting or increasing contaminant loadings. Sampling event scheduling and the interpreted surface water data should account for recent weather and sampling station conditions. Surface water level and sampling station conditions should be recorded during each sampling event. Surface water observations will include the flood stage in streams, seasonal base flow conditions and confirm location and timing for meaningful surface water quality sampling. The following objective observations will be recorded in a dedicated field logbook prior to sample collection:  Relative stream water level;  Surface water clarity; and  Monitoring location conditions, including access and surroundings. Report to the Operations Manager any observed maintenance or access issues observed. 2.4.2 Sampling Station Modifications Modifications to surface water sampling station conditions may be required prior to each sampling event. These modifications may include surface and submerged debris removal, slightly deepening the station to allow sample container immersion, or channeling/piping to consolidate local discharge. When modifications are necessary, sufficient time will be allowed for settlement of suspended solids between the disturbance and sample collection. A minimum four hour settling period will be observed. 2.4.3 Sample Collection 2.4.3.1 Collection Procedure Surface water samples will be obtained from locations with minimal turbulence and aeration. For stream sampling locations, samples will be collected if flowing water is observed during the sampling event. For pond sampling locations, water flow is not necessary. New, powder-free, DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 19 surgical gloves will be donned prior to sample collection. The following procedure will be followed when conducting surface water sampling: 1. Put on new, powder-free, surgical gloves. 2. Hold the bottle by the bottom with one hand and remove the cap with the other. 3. Push the sample container slowly into the water with the mouth tilted up toward the current to fill. A water depth of six inches is generally satisfactory. Breaching the surface or losing sample preservatives while filling the container will be avoided. 4. If there is little current movement, the container should be moved slowly, in a lateral, side to side direction, with the container mouth pointing upstream. 2.4.3.2 Field Parameters Temperature, pH, specific conductivity, and turbidity will be measured prior to sampling to assess field conditions and check the water sample stability over time. Temperature, pH, specific conductivity, and turbidity measurements will be recorded for surface water samples. Temperature, pH, conductivity and turbidity meters will be calibrated at the beginning of each sampling event, according to the manufacturers' specifications and consistent with Test Methods for Evaluating Solid Waste - Physical/Chemical Methods (SW-846). 2.4.3.3 Sample Collection Order Surface water samples will be collected in the order of parameter volatilization sensitivity. The following order will be observed:  Volatile Organics and Volatile Inorganics;  Extractable Organics, Petroleum Hydrocarbons, Aggregate Organics, and Oil and Grease;  Total Metals;  Inorganic Nonmetallics, Physical and Aggregate Properties, and Biologicals;  Microbiological; and  Other Parameters (as applicable). Samples will be collected and analyzed in an unfiltered state. Dissolved metal analysis samples, if subsequently required, will be prepared by field filtration using a decontaminated peristaltic pump and a disposable 0.45 micron filter cartridge specifically manufactured for this purpose. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 20 Additional blanks and duplicate samples will not be collected with the surface water samples. 2.4.3.4 Decontamination Field meters which might contact surface water samples will be decontaminated between stations Equipment decontamination procedures are detailed in Section 2.3.3. 2.4.3.5 Sample Preservation Following sampling at each location, the sample bottles will be placed in a cooler with ice for preservation. 2.4.3.6 Sample Containers Sample containers will be provided by the laboratory for each surface water sampling event. Each container's preparation and preservatives will be the same as those utilized for groundwater sampling and addressed previously in Section 2.3.6.8. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 21 3.0 FIELD QA/QC PROGRAM Field Quality Assurance/Quality Control (QA/QC) requires the routine collection and analysis of blanks to verify that the handling process has not affected the sample quality. Contaminants found in the trip blanks could be attributed to: 1. Interaction between the sample and the container; 2. Contaminated source water; or 3. A handling procedure that alters the sample. 3.1 Blank Samples 3.1.1 Trip Blanks The laboratory will prepare a trip blank by filling each sample bottle type with laboratory grade distilled or deionized water. Trip blanks will use the specific bottle type required for the analyzed parameters from a bottle pack specifically assembled by the laboratory for each sampling event. Trip blanks are assembled in the laboratory, transported with the empty bottle packs, remain in the coolers throughout sampling, and are transported back to the laboratory for analysis. Trip blanks will only be analyzed for volatile and purgeable organics. 3.1.2 Equipment Blanks Where wells are sampled with non-dedicated equipment, an equipment blank sample will be collected at a rate of one sample per day. To collect an equipment blank, pour non-organic (Milli-Q or equivalent) water into a bailer and, handling the bailer in a manner identical to well sampling, transfer the water into the specified “blank” sample collection jars specified. Equipment blank samples are packed and sent to the laboratory with the other samples. 3.1.3 Field Blanks As deemed necessary, field blanks will be collected. The laboratory will provide designated bottles with laboratory grade distilled or deionized water. The water will be poured from one laboratory provided container to an empty laboratory provided container for the specified analysis. This activity must be performed at the sampling location. Field blank samples will be packed in the cooler and sent to the laboratory with the other samples. 3.1.4 Blank Concentrations The contaminant concentration levels found in the blanks will be reported but will not be used to correct groundwater data. In the event that elevated parameter concentrations are found in a blank, the analysis will be flagged for future evaluation and possible re-sampling. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 22 3.1.5 Field Instruments Field instruments utilized to measure groundwater characteristics will be calibrated prior to entering the field and recalibrated in the field as required to insure accurate measurements for each sample. The specific conductivity and pH meter will be recalibrated utilizing two prepared solutions of known pH concentrations in the anticipated value range (between 4 and 10). A permanent thermometer, calibrated against a National Bureau of Standards Certified thermometer, will be used for temperature meter calibration. Other field equipment should be calibrated at least daily using the manufacturer's recommended specifications. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 23 4.0 SAMPLE PRESERVATION AND SHIPMENT Sample preservation methods, shipment, and Chain-of-Custody procedures observed between sampling and laboratory analysis are presented in this section. 4.1 Sample Preservation Pre-measured chemical preservatives will be provided by the analytical laboratory. Hydrochloric acid will be used as a chemical stabilizer and preservative for volatile and purgeable organic specimens. Nitric acid will be used as the preservative for analysis of inorganic metals constituents. 4.2 Storage/Transport Conditions Proper storage and transport conditions must be maintained to preserve sample integrity between collection and analysis. Ice and chemical cold packs will be used to cool and preserve samples, as directed by the analytical laboratory. Samples will be maintained at a maximum temperature of 4o C. Dry ice is not to be used. Samples will be packed and/or wrapped in plastic bubble wrap to inhibit breakage or accidental spills. Chain-of-Custody control documents will be placed in a waterproof pouch and sealed inside the cooler with the samples for shipping. Tape and/or custody seals will be placed on the outside of the shipping coolers, in a manner to prevent and detect tampering with the samples. 4.3 Sample Delivery Samples will be delivered to the analytical laboratory within a reasonable time period in person or using an overnight delivery service in compliance with analytical holding times. If samples are not shipped the same day, the ice used to keep the samples cool will be replenished to maintain the required maximum 4o C temperature. Sample shipment and delivery will be coordinated with the laboratory. Do NOT store or ship highly contaminated samples (concentrated wastes, free product, etc.) or samples suspected of containing high contaminant concentrations in the same cooler or shipping container with other environmental samples. 4.4 Chain of Custody Chain-of-Custody control will be maintained from sampling through analysis to prevent tampering with analytical specimens. Chain-of-Custody control procedures consist of the following: 1. Chain-of-Custody will originate at the laboratory with the shipment of prepared sample bottles and a sealed trip blank(s) in sealed coolers. Identical container kits will be shipped by express carrier to the sampler or site or will be picked up at the laboratory. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 24 2. After sample kit delivery but prior to sampling, the sampler will inventory the container kit checking consistency between the number and type of containers present with what is indicated in the Chain-of-Custody forms and that required for the sampling event. 3. Labels for individual sample containers will be written in the field, indicating the site name, sample location/well number, date and time of sample collection, analysis required, sampler’s initials, and preservation methods used for the sample. 4. Collected specimens will be placed in the coolers on ice and will remain in the continuous possession of the field technician until shipment or transferal as provided by the Chain-of-Custody form has occurred. If continuous possession cannot be maintained by the field technician, the coolers will be temporarily sealed and placed in a secure area. Once delivered to the laboratory, samples will be issued laboratory sample numbers recorded into a logbook indicating client, sample location/well number, and delivery date and time. The laboratory director or his designee will sign the Chain-of-Custody control forms and formally receive the samples. Submitted Chain-of-Custody form copies will be placed in the laboratory's analytical project file and attached to the laboratory analysis report. Chain-of-Custody forms will be used to transfer direct deliveries from the sampler to the laboratory. A coded, express delivery shipping bill shall constitute the Chain-of Custody between the sampler and laboratory for overnight courier deliveries. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 25 5.0 LABORATORY ANALYSIS The samples will be analyzed for parameters specified by the DWM for detection monitoring purposes including water quality field indicators (pH, conductivity, temperature and turbidity) and those constituents listed in Table 2. Analytical methods from Test Methods For Evaluating Solid Waste - Physical/Chemical Methods (SW-846) or Methods For the Chemical Analysis of Water and Wastes will be consistent with the DWM’s policies regarding analytical methods and reporting limits. Analysis will be performed by a laboratory certified by the DWM for the analyzed parameters. 5.1 Laboratory Quality Assurance/Quality Control Laboratory analysis will be performed by a NC Certified laboratory. Formal environmental laboratory Quality Assurance/Quality Control (QA/QC) procedures are to be utilized at all times. The laboratory must have a QA/QC program based on specific routine procedures outlined in a written laboratory Quality Assurance/Quality Control Manual. Internal quality control checks shall be undertaken regularly by the lab to assess the precision and accuracy of analytical procedures. 5.2 Data Review During analyses, quality control data and sample data shall be reviewed by the laboratory manager to identify questionable data and determine if the necessary QA/QC requirements are being followed. If a portion of the lab work is subcontracted, it is the contracted laboratories responsibility to verify the subcontracted work is performed by certified laboratories, using identical QA/QC procedures. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 26 This page intentionally left blank. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 27 6.0 RECORD KEEPING AND REPORTING This section addresses the documentation and reporting requirements associated with the WQMP implementation. 6.1 Field Logbook During sampling activities, the field technician will keep an up-to-date logbook documenting important information pertaining to the technician's field activities. The field logbook will document the following:  Site Name and Location;  Sampling Date and Time;  Climatic Conditions During Sampling Event;  Sampling Location/Well Identification Number; and  Signature of Field Technician.  Well Condition Groundwater Sampling Observations  Static Water Level and Well Bottom;  Water Column Height;  Monitoring Well Condition;  Monitoring Location Conditions, Including Access and Surroundings;  Purged Water Volume and Relative Recharge Rate (High or Low);  Observations on Purging and Sampling Event;  Sample Collection Time; and  Field Parameters: Temperature, pH, Specific Conductivity, and Turbidity Readings; Also DO and ORP values. Surface Water Sampling Observations  Relative Stream Water Level;  Surface Water Clarity;  Monitoring Location Conditions, Including Access and Surroundings;  Sample Collection Time; and  Field Parameters: Temperature, pH, Specific Conductivity, and Turbidity Readings. 6.2 Groundwater Flow Evaluation After each monitoring event, the potentiometric surface will be evaluated to determine the groundwater flow rate and direction at the site. The groundwater flow direction will be determined by comparing groundwater surface elevations across the site with a potentiometric surface map constructed from data collected during each event. Groundwater flow rates will be determined using the following equation: DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 28 V=Ki n where: V = velocity (feet/day) K = hydraulic conductivity (feet/day) i = hydraulic gradient (feet/feet) n = effective porosity of aquifer soils (unitless) This evaluation will be used to determine if modifications to the WQMP may be required (Section 7.1). 6.3 Reporting A report summarizing the monitoring event and the analytical data from the event will be submitted to the DWM within 120 days of completion of the event. Monitoring reports will include the following: 1. A discussion of site geology and hydrogeology; 2. A discussion of the monitoring event procedures and results; 3. A groundwater flow evaluation (including a potentiometric surface map); 4. Analytical laboratory reports and summary tables; 5. Graphical and/or statistical analysis of analytical data may be reported but is not required; 6. Solid Waste Environmental Monitoring Reporting Form (Appendix B); and 7. Laboratory Data (in Electronic Data Deliverable Format - Section 1.2). Monitoring reports will be submitted electronically to DWM. Copies of the reports will be kept at the landfill office. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 29 7.0 MONITORING PROGRAM MODIFICATIONS This section addresses the procedures that should be followed with respect to water quality monitoring program modifications. 7.1 Plan Modifications and Updates After each water quality monitoring event, a groundwater flow evaluation will be performed to determine the groundwater flow rate and direction at the site (Section 6.2). If this evaluation reveals the monitoring network is insufficient to monitor for a potential release of solid waste constituents from the solid waste management area, a modified plan will be prepared and submitted to the DWM for approval. The need for plan modifications and updates will also be determined as part of regularly scheduled permitting activities for the facility. 7.2 Well Abandonment/Rehabilitation Should wells become irreversibly damaged or require rehabilitation, the DWM will be notified. If monitoring wells and/or piezometers are damaged irreversibly they will be abandoned under in accordance with 15A NCAC 02C .0113. The abandonment procedure in unconsolidated materials involves over-drilling and/or pulling the well casing and plugging the well with a sealant such as neat cement grout and/or bentonite clay. For bedrock well completions, the abandonment encompasses plugging the interior well riser and screen with a sealant such as neat cement grout and/or bentonite clay. 7.3 Additional Well Installations Additional well installations will be carried out in accordance with DWM directives. Monitoring wells will be installed under the supervision of a geologist or engineer who is registered in North Carolina and who will certify to the DWM that the installation complies with the North Carolina rules and regulations. For future well installations, the documentation for well construction will be submitted by the registered geologist or engineer to the DWM within sixty (60) days after well construction. 7.4 Implementation Schedule The monitoring program proposed herein will be implemented following approval of this Water Quality Monitoring Plan by the DWM. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Davidson County MSW Landfill - Phase 2 Water Quality Monitoring Plan Revised January 2018 - September2017 Page 30 This page intentionally left blank. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 FIGURES Water Quality Monitoring Plan Davidson County MSWLF - Phase 2 Davidson County, North Carolina DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 This page intentionally left blank. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 MW-2TOC=661.05 DTW=12.87 GWE=651.19 MW-1 TOC=734.16 DTW=DRY MW-9 TOC=683.25 DTW=23.40 GWE=659.85 MW-4D TOC=673.54 DTW=24.47 GWE=649.07 MW-3S TOC=660.73 DTW=11.32 GWE=649.41 MW-3D TOC=660.91 DTW=10.88 GWE=650.03 MW-5 TOC=687.31 DTW=33.34 GWE=653.97 MW-7 MW-8 TOC=711.14 DTW=51.37 GWE=659.77 MW-6S TOC=703.25 DTW=39.47 GWE=663.78 MW-6D SW-1 SW-2 SW-3 MW-10D TOC=668.76 DTW=19.46 GWE=649.30 MW-10S TOC=668.58 DTW=18.90 GWE=649.68 MW-4S TOC=673.82 DTW=23.46 GWE=650.36 G:\CAD\Davidson\Davdco 17-4\sheets\DAVDCO-B0852.dwg - 11/21/2017 12:06 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.POTENTIOMETRIC SURFACE MAPSEPTEMBER 2017PHASE 2 LANDFILLDAVIDSON COUNTY, NCJ.A.L.M.M.G.AS SHOWN2Nov 2017DAVDCO 17-4DAVDCO-B0852MW-1 TOC= DTW= GWE= SW-1 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 TABLES Water Quality Monitoring Plan Davidson County MSWLF - Phase 2 Davidson County, North Carolina DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 This page intentionally left blank. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Table 1Monitoring Well DetailsDavidson County Phase 2 LandfillBy: MGDate: 5/15/2017WellWell Installation DateLatitude LongitudeWell Diameter (inches)Total Well Depth (feet bgs)Ground Surface Elevation (feet amsl)TOC Elevation (feet amsl)Screen Interval (feet bgs)Screen GeologyMW-1 3/25/2008 35.85289 80.17643 2.0 20.0 730.65 734.16 10-20 sandy siltMW-2 8/12/2008 35.84994 80.18351 2.0 14.5 661.05 664.06 9.5-14.5 sandy silt/graniteMW-3S 3/24/2008 35.84948 80.18486 2.0 18.0 657.87 660.73 8-18 clay and sandMW-3D 3/26/2008 35.84948 80.18484 2.0 40.5 658.08 660.91 35.5-40.5 graniteMW-4S 3/24/2008 35.84953 80.18559 2.0 21.0 670.74 673.82 11-21 sandy silt with clayMW-4D 3/26/2008 35.84952 80.18557 2.0 37.0 670.60 673.54 32-37 dioriteMW-5 3/24/2008 35.84863 80.18713 2.0 38.0 684.59 687.31 28-38 clayey siltMW-6S 3/25/2008 35.84681 80.18525 2.0 40.0 700.00 703.25 30-40 sandy silt with gravelMW-8 3/24/2008 35.84736 80.18404 2.0 58.6 708.21 711.14 48.6-58.6 dioriteMW-9 8/12/2008 35.84906 80.18614 2.0 30.5 683.68 683.25 20.5-30.5 dioriteMW-10S 9/21/2004 35.85083 80.18306 2.0 27.0 665.17 668.58 12-27 silty sand, clay & gravelMW-10D 9/21/2004 35.85082 80.18305 2.0 44.0 666.02 668.76 36-44 diabaseMW-11S 10/18/2004 35.85174 80.18214 2.0 52 692.4 695.19 37-52 clayey siltMW-11D 10/18/2004 35.85175 80.18212 2.0 69 692.4 694.97 60-69 dioriteMW-12 11/16/2010 35.85220 80.18137 2.0 30 684.1 686.80 20-30 clayMW-13 11/11/2010 35.84867 80.17940 2.0 18.0 681.34 683.35 8-18 PWRNote:Survey data from Michael Green and Associates, P.A.amsl = above mean sea levelbgs = below ground surfaceNA = water level data not availableWell construction information from well logs (provided in Appendix A)H:\Projects\Davidson County (NC)\DAVDCO-16-10 (Area 3 PTC Application)\J. Water Quality Monitoring Plan\Table 1 - well details.xlsxDocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 This page intentionally left blank. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Table 2 Analytical Parameters Davidson County Landfill - Phase 2 By: JAS/MMG Date: 11/8/2016 Constituents Synonyms Antimony Arsenic Barium Beryllium Cadmium Chromium Cobalt Copper Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Temperature pH Turbidity Specific Conductance Acetone 2-Propanone Acrylonitrile 2-Propenenitrile Benzene Bromochloromethane Chlorobromomethane Bromodichloromethane Dibromochloromethane Bromoform Tribromomethane Carbon Disulfide Carbon Tetrachloride Tetrachloromethane Chlorobenzene Chloroethane Ethyl chloride Chloroform Trichloromethane Dibromochloromethane Chlorodibromomethane 1,2-Dibromo-3-chloropropane DBCP 1,2-Dibromoethane Ethylene dibromide, EDB 1,2-Dichlorobenzene o-Dichlorobenzene 1,4-Dichlorobenzene p-Dichlorobenzene trans-1,4-Dichloro-2-butene 1,1-Dichloroethane Ethyldidene chloride 1,2-Dichloroethane Ethylene dichloride 1,1-Dichloroethylene Vinylidene chloride cis-1,2-Dichloroethylene trans-1,2-Dichloroethylene 1,2-Dichloropropane Propylene dichloride cis-1,3-Dichloropropene trans-1,3-Dichloropropene Ethylbenzene H:\Projects\Davidson County (NC)\DAVDCO-16-10 (Area 3 PTC Application)\J. Water Quality Monitoring Plan\Table 2 -Analyte List- S+G.xlsx DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Table 2 Analytical Parameters Davidson County Landfill - Phase 2 By: JAS/MMG Date: 11/8/2016 Constituents Synonyms 2-Hexanone Methyl butyl ketone Methyl bromide Bromomethane Methyl chloride Chloromethane Methyl ethyl ketone 2-Butanone Methyl iodide Iodomethane 4-Methyl-2-pentanone Methyl isobutyl ketone Methylene bromide Dibromomethane Methylene chloride Dichloromethane Styrene Ethenylbenzene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethylene Perchloroethylene Toluene Methyl benzene 1,1,1-Trichloroethane Methyl chloroform 1,1,2-Trichloroethane Trichloroethylene Trichloroflouromethane CFC-11 1,2,3-Trichloropropane Vinyl acetate Acetic acid, ethenyl ester Vinyl chloride Choroethene Xylenes Dimethyl benzene H:\Projects\Davidson County (NC)\DAVDCO-16-10 (Area 3 PTC Application)\J. Water Quality Monitoring Plan\Table 2 -Analyte List- S+G.xlsx DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Appendix A Boring Logs Water Quality Monitoring Plan Davidson County MSWLF - Phase 2 Davidson County, North Carolina DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 This page intentionally left blank. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 FIELD BOREHOLE LOG BOREHOLE NUMBER PROJECT NAME: LOACATION: DRILLING CO: DRILLING METHOD: FIELD PARTY: GEOLOGIST: DATE BEGUN: COMPLETED: TOTAL DEPTH: GROUND SURFACE ELEVATION: Depth (ft) Time Date STATIC WATER LEVEL (BLS)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 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 27.0DEPTHG. N. Richardson & Associates, Inc. 14 North Boylan Avenue, Raleigh NC 27603 (919) 828-0577 Page 1 of 1 TOP OF CASING ELEVATION: PZ-37 HSA Davidson County - Phase 2 Lexington, NC Engineering Tectonics, P.A. R. Barron J. Smyth 9/21/04 9/21/04 27 SS SS SS SS SS 18" 10" 8" 3" 2" HSA SILTY SAND: Dry to moist, tan and black, silty sand granitic sarprolite with Mn staining. CLAYEY SANDY GRAVEL: Moist red brown clayey sandy gravel sarprolite. CLAYEY GRAVEL: Wet clayey gravel saprolite with large quartz grains. Boring terminated at 27 feet below grade. 11,21,37 6,9,15 4,8,28 50/3 50/2 19 2 pm 9/21/04 16.98 10/12/04 4:15 Converted to MW-10S (MW-10S) DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 FIELD BOREHOLE LOG BOREHOLE NUMBER PROJECT NAME: LOACATION: DRILLING CO: DRILLING METHOD: FIELD PARTY: GEOLOGIST: DATE BEGUN: COMPLETED: TOTAL DEPTH: GROUND SURFACE ELEVATION: Depth (ft) Time Date STATIC WATER LEVEL (BLS)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0 1.0 2.0 3.0 4.0 5.06.07.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.018.019.020.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.031.032.033.0 34.0 35.0 36.0 37.0 38.0 39.0 40.0 41.0 42.0 43.044.0 0.0 1.0 2.0 3.0 4.0 5.06.07.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.018.019.020.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.031.032.033.0 34.0 35.0 36.0 37.0 38.0 39.0 40.0 41.0 42.0 43.044.0DEPTHG. N. Richardson & Associates, Inc. 14 North Boylan Avenue, Raleigh NC 27603 (919) 828-0577 Page 1 of 1 TOP OF CASING ELEVATION: PZ-37d HSA Davidson County - Phase 2 Lexington, NC Engineering Tectonics, P.A. R. Barron J. Smyth 9/21/04 10/14/06 44 SS SS SS SS SS 18" 10" 8" 3" 2" HSA AH/RC SILTY SAND: Dry to moist, tan and black, silty sand granitic sarprolite with Mn staining. CLAYEY SANDY GRAVEL: Moist red brown clayey sandy gravel sarprolite. CLAYEY GRAVEL: Wet clayey gravel saprolite with large quartz grains. AR at 30'. Air hammer to 34' to set outer casing in rock. DIABASE: Rock cored from 34' to 44' REC=95%, RQD=39%. Weathered diabase. Boring terminated at 44 feet. 11,21,37 6,9,15 4,8,28 50/3 50/2 Converted to MW-10D (MW-10D) DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 FIELD BOREHOLE LOG BOREHOLE NUMBER PROJECT NAME: LOACATION: DRILLING CO: DRILLING METHOD: FIELD PARTY: GEOLOGIST: DATE BEGUN: COMPLETED: TOTAL DEPTH: GROUND SURFACE ELEVATION: Depth (ft) Time Date STATIC WATER LEVEL (BLS)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 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 33.0DEPTHG. N. Richardson & Associates, Inc. 14 North Boylan Avenue, Raleigh NC 27603 (919) 828-0577 Page 1 of 2 TOP OF CASING ELEVATION: PZ-45s HSA Davidson County - Phase 2 Lexington, NC Engineering Tectonics, P.A. R. Barron J. Smyth 10/14/04 10/18/04 52 SS SS SS SS SS SS SS HSA CLAYEY SILT: Moist, green, black and tan clayey silt saprolite SILT: Dry green, black and tan silt saprolite CLAYEY SILT: Moist to wet green black and tan clayey silt saprolite. 12,20,33 15,27,40 17,34,42 37,50/5 15,25,40 17,27,41 14,27,31 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 FIELD BOREHOLE LOG BOREHOLE NUMBER PROJECT NAME: LOACATION: DRILLING CO: DRILLING METHOD: FIELD PARTY: GEOLOGIST: DATE BEGUN: COMPLETED: TOTAL DEPTH: GROUND SURFACE ELEVATION: Depth (ft) Time Date STATIC WATER LEVEL (BLS)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION33.0 34.0 35.0 36.0 37.0 38.0 39.0 40.0 41.0 42.0 43.0 44.0 45.0 46.0 47.0 48.0 49.0 50.0 51.0 52.0 33.0 34.0 35.0 36.0 37.0 38.0 39.0 40.0 41.0 42.0 43.0 44.0 45.0 46.0 47.0 48.0 49.0 50.0 51.0 52.0DEPTHG. N. Richardson & Associates, Inc. 14 North Boylan Avenue, Raleigh NC 27603 (919) 828-0577 Page 2 of 2 TOP OF CASING ELEVATION: PZ-45s HSA Davidson County - Phase 2 Lexington, NC Engineering Tectonics, P.A. R. Barron J. Smyth 10/14/04 10/18/04 52 SS SS SS CLAYEY SILT: Moist to wet, green to black and tan clayey silt saprolite. AR @ 52 feet. 17,25,34 21,32,50/5 50/6 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 FIELD BOREHOLE LOG BOREHOLE NUMBER PROJECT NAME: LOACATION: DRILLING CO: DRILLING METHOD: FIELD PARTY: GEOLOGIST: DATE BEGUN: COMPLETED: TOTAL DEPTH: GROUND SURFACE ELEVATION: Depth (ft) Time Date STATIC WATER LEVEL (BLS)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 36.0 37.0 38.0 39.0 40.0 41.0 42.0 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 35.0 36.0 37.0 38.0 39.0 40.0 41.0 42.0DEPTHG. N. Richardson & Associates, Inc. 14 North Boylan Avenue, Raleigh NC 27603 (919) 828-0577 Page 1 of 2 TOP OF CASING ELEVATION: PZ-45d HSA Davidson County - Phase 2 Lexington, NC Engineering Tectonics, P.A. R. Barron J. Smyth 10/14/04 10/18/04 69 SS SS SS SS SS SS SS SS HSA CLAYEY SILT: Moist, green, black and tan clayey silt saprolite SILT: Dry green, black and tan silt saprolite CLAYEY SILT: Moist to wet green black and tan clayey silt saprolite. CLAYEY SILT: Moist to wet green black and tan clayey silt saprolite. AR at 52 feet. Air hammer used to set outer casing to 58 feet. 12,20,33 15,27,40 17,34,42 37,50/5 15,25,40 17,27,41 14,27,31 17,25,34 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 FIELD BOREHOLE LOG BOREHOLE NUMBER PROJECT NAME: LOACATION: DRILLING CO: DRILLING METHOD: FIELD PARTY: GEOLOGIST: DATE BEGUN: COMPLETED: TOTAL DEPTH: GROUND SURFACE ELEVATION: Depth (ft) Time Date STATIC WATER LEVEL (BLS)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION42.0 43.0 44.0 45.0 46.0 47.0 48.0 49.0 50.0 51.0 52.0 53.0 54.0 55.0 56.0 57.0 58.0 59.0 60.0 61.0 62.0 63.0 64.0 65.0 66.0 67.0 68.0 69.0 42.0 43.0 44.0 45.0 46.0 47.0 48.0 49.0 50.0 51.0 52.0 53.0 54.0 55.0 56.0 57.0 58.0 59.0 60.0 61.0 62.0 63.0 64.0 65.0 66.0 67.0 68.0 69.0DEPTHG. N. Richardson & Associates, Inc. 14 North Boylan Avenue, Raleigh NC 27603 (919) 828-0577 Page 2 of 2 TOP OF CASING ELEVATION: PZ-45d HSA Davidson County - Phase 2 Lexington, NC Engineering Tectonics, P.A. R. Barron J. Smyth 10/14/04 10/18/04 69 SS SS AH/RC DIORITE: Highly weathered diorite. Cored from 58.6' to 68.6 feet. REC=15%, RQD=3% Boring over- reamed by Air Hammer to 69'. 21,32,50/5 50/6 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 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 (BLS)DEPTHHEADSPACE (ppm)SAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0DEPTHPage 1 of 1 GROUND ELEV.: NORTHING:EASTING:767182.539 1649922.196 FeetInchesFeet686.8 PZ-46 GP/AH Davidson County - Phase 2 Lexington, NC Engineering Tectonics, P.A. John Burr G. Mills 11/5/10 11/16/10 62 GP GP GP GP GRAB GRAB GRAB GP AH SILTY CLAY: Upper 6 inches is topsoil underlain by moist red-brown silty clay. CLAYEY SILT: Moist tan-yellow clayey silt. SILT: Tan silt with relict rock structure. CLAY: Moist grayish white, tan and brown clay. Iron staining visible. Some trace sand from 21 - 30 feet below grade. PWR: Dry partially weathered rock. Boring drilled to 62 feet. Significant water encountered at 62. Borehole collapsed after drilling. No bedrock encountered. New boring drilled to 30 feet adjacent to first borehole. Piezometer set at 30 feet. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 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 (BLS)DEPTHHEADSPACE (ppm)SAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0 5.0 10.0 15.0 0.0 5.0 10.0 15.0DEPTHPage 1 of 1 GROUND ELEV.: NORTHING:EASTING:767260.956 1650493.443 FeetInchesFeet703.3 PZ-47 GP Davidson Co Phase 2 Landfill Davidson County Geologic Explorations Johnny Burr Lindsay Quant 11/11/10 11/12/10 15 MC MC GP CLAY: Moist to wet darkbrown clay. CLAY: Moist red to gray clay with partically weathered rock (PWR) and iron staining. SANDY SILT: Dry red brown sandy silt with PWR. CLAY: Very wet brown clay PWR: Dry gray white and red PWR with crushed rock. Geoprobe refusal at 15 feet. 8.43 4:00 11/15/10 700.81 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 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 (BLS)DEPTHBLOW COUNTSAMPLING METHODRECOVERYDRILL METHODDESCRIPTION LITHOLOGYWELLINSTALLATION0.0 5.0 10.0 15.0 0.0 5.0 10.0 15.0DEPTHRichardson Smith Gardner & Assoc 14 North Boylan Avenue, Raleigh NC 27603 (919) 828-0577 Page 1 of 1 GROUND ELEV.: NORTHING:EASTING:765890.517 1650491.315 Per 6"FeetInchesFeet683.35 PZ-51 GP/AH Davidson Co Phase 2 Landfill Davidson County Geologic Explorations Johnny Burr Lindsay Quant 11/11/10 11/11/10 18 MC MC GP/AH SILTY CLAY: Dry gray red silty clay. CLAY: Very wet brown clay with ribbon and cast. SANDY SILT: Dry to moist gray red sandy silt. Geoprobe refusal at 14 feet. PWR: Moist to wet partially weathered granitic rock (PWR). Air hammer drilled to 18 feet, then boring terminated. 11.52 4:15 11/15/10 681.34 DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 This page intentionally left blank. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 Appendix B Environmental Monitoring Report Form Water Quality Monitoring Plan Davidson County MSWLF - Phase 2 Davidson County, North Carolina DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 This page intentionally left blank. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 DENR USE ONLY: Paper Report Electronic Data - Email CD (data loaded: Yes / No ) Doc/Event #: NC DENR Division of Waste Management - Solid Waste Environmental Monitoring 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: Phone: E-mail: Facility name: Facility Address: Facility Permit # NC Landfill Rule: (.0500 or .1600) Actual sampling dates (e.g., October 20-24, 2006) Environmental Status: (Check all that apply) Initial/Background Monitoring Detection Monitoring Assessment Monitoring Corrective Action Type of data submitted: (Check all that apply) Groundwater monitoring data from monitoring wells Methane gas monitoring data Groundwater monitoring data from private water supply wells Corrective action data (specify) Leachate monitoring data Other(specify) Surface water monitoring data Notification attached? 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 Affix NC Licensed/ Professional Geologist Seal Revised 6/2009 Date Facility Representative Address NC PE Firm License Number (if applicable effective May 1, 2009) DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06 This page intentionally left blank. DocuSign Envelope ID: C5F93225-F40B-40C7-90DB-6A15B0127A06