The URL can be used to link to this page

Home My WebLink About7906_Duke_DanRiver_WQMP_DIN25603_20161026 To: Duke Energy Carolinas, LLC Date 8/26/2015 From: Amec Foster Wheeler Water Quality Monitoring Plan Dan River Landfill Duke Energy – Dan River Steam Station Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 3195 Pine Hall Road Belews Creek, NC 27009 336-215-4576 www.duke-energy.com Page 1 of 2 August 26, 2015 North Carolina Department of Environment and Natural Resources Division of Waste Management Solid Waste Section 2090 U.S. Highway 70 Swannanoa, North Carolina 28778 Attn: Mr. Larry Frost Re: Industrial Landfill Permit to Construct Application Submittal Permit No.: TBD Dan River Steam Station Rockingham County Eden, North Carolina 27009 Dear Mr.Frost, Attached you will find the Permit to Construct (PTC) Application for the Duke Energy Dan River Steam Station Landfill prepared by Amec Foster Wheeler under the direction of Duke Energy. The PTC Application consists of the Water Quality Monitoring Plan (WQMP), and the Construction Plan Application (CPA) which is submitted as two volumes and provides details on landfill design, operations, closure, and post-closure elements. The PTC application is being submitted to fulfill the requirements of Title 15A Subchapter 13B of the North Carolina Administrative Code (NCAC) to meet the requirements of Section .0500 for industrial landfills and substantive requirements of Section .1600 for municipal solid waste (MSW) landfills for compliance with Senate Bill 729. Duke Energy requests a 5-Year Solid Waste permit for the Dan River Landfill facility. Respectfully submitted, Kimberlee Hutchinson, PE Environmental Services Attachments: (2) CPA Hard Copy (Volumes 1 and 2) (2) CPA Electronic Copy (2) WQMP Hard Copy (2) WQMP Electronic Copy cc (letter only, via e-mail): Ed Mussler, NCDENR Elizabeth Werner, NCDENR Henry Taylor, Duke Energy Ed Sullivan, Duke Energy Cedric Ruhl, Amec Foster Wheeler Amec Foster Wheeler Environment & Infrastructure Inc. 2801 Yorkmont Road, Suite 100 Charlotte, North Carolina 28208 704-357-8600 amecfw.com Registered in North Carolina Engineering and Land Surveying License No. F-1253 Geology License No. C-247 August 26, 2015 Duke Energy 526 South Church Street Charlotte, North Carolina 28202 Attention: Ms. Kimberlee Hutchinson, P.E. Subject: Construction Plan Application and Water Quality Monitoring Plan Proposed Dan River Landfill Duke Energy – Dan River Steam Station Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Dear Ms. Hutchinson: Amec Foster Wheeler is pleased to provide this Construction Plan Application and Water Quality Monitoring Plan to Duke Energy (Duke) for the proposed Dan River Landfill at Duke’s Dan River Steam Station. The Construction Plan Application is submitted as two volumes and addresses design information required by 15A NCAC 13B .0500 rules. The Water Quality Monitoring Plan is submitted as one volume and addresses monitoring requirements required by 15A NCAC 13B .0500 rules. The Construction Plan Application and Water Quality Monitoring Plan are being submitted in parallel with on-going activities including collection of monthly water level collection. The additional information including the estimated seasonal high groundwater table will be provided as a revision to these reports at a later date. Amec Foster Wheeler appreciates the opportunity to provide these reports to Duke. Please contact us at your convenience with questions. Sincerely, Amec Foster Wheeler Cedric H. Ruhl Courtney Murphy Senior Engineer Senior Geologist Amec Foster Wheeler Project No. 7810140065 TOC 8/26/2015 Table of Contents 1 INTRODUCTION AND PURPOSE ........................................................................................................ 1 1.1 Project Description ........................................................................................................................ 1 1.2 Site Description ............................................................................................................................. 1 1.3 Site Geology and Hydrogeology ................................................................................................... 1 1.4 Well Abandonment ........................................................................................................................ 2 2 GROUNDWATER MONITORING SYSTEM ......................................................................................... 2 2.1 Monitoring Locations ..................................................................................................................... 2 2.1.1 Proposed Monitoring Network ................................................................................................... 3 2.1.1.1 Proposed Existing Monitoring Well Locations (Observation Wells to be Converted to Monitoring Wells) .............................................................................................................................. 3 2.1.1.2 Proposed Newly Installed Monitoring Well Locations ....................................................... 3 2.2 Monitoring Well Construction and Installation ............................................................................... 3 2.2.1 Type II (Uppermost Aquifer) Monitoring Wells .......................................................................... 4 2.2.2 Type III (Deeper Aquifer) Monitoring Wells ............................................................................... 4 2.2.3 Surface Finish (Type II and Type III Monitoring Wells) ............................................................. 4 2.2.4 Well Protection .......................................................................................................................... 5 2.2.5 Surveying .................................................................................................................................. 5 2.3 Monitoring Well Development ....................................................................................................... 5 2.4 Monitoring Well In-Situ Permeability Testing ................................................................................ 5 2.5 Monitoring Well Maintenance ........................................................................................................ 5 3 GROUNDWATER MONITORING PROGRAM ...................................................................................... 6 3.1 Equipment Calibration ................................................................................................................... 6 3.2 Sampling ....................................................................................................................................... 6 3.2.1 Decontamination of Field Sampling Equipment ........................................................................ 6 3.2.2 Well Purging Methods ............................................................................................................... 6 3.2.2.1 Low-Flow Method .............................................................................................................. 6 3.2.2.2 Volume-Averaging Method ................................................................................................ 7 3.2.3 Sample Collection ..................................................................................................................... 7 3.2.4 Sample Labels ........................................................................................................................... 7 3.2.5 Sample Preservation and Handling ........................................................................................... 8 3.2.6 Chain-of-Custody Program........................................................................................................ 8 3.2.7 Field Logbook ............................................................................................................................ 8 3.3 Analytical Procedures ................................................................................................................... 9 3.4 Quality Assurance and Quality Control Program .......................................................................... 9 4 SURFACE WATER MONITORING ....................................................................................................... 9 5 LEACHATE MONITORING ................................................................................................................. 10 6 DATA EVALUATION AND REPORTING ............................................................................................ 10 6.1 Well Abandonment Record Submittal ......................................................................................... 10 6.2 Well Construction Record Submittal ........................................................................................... 10 6.3 Monitoring Well Installation Report ............................................................................................. 10 6.4 WQMP Update ............................................................................................................................ 10 6.5 Semi-Annual Monitoring Reports ................................................................................................ 10 7 REFERENCES .................................................................................................................................... 11 Amec Foster Wheeler Project No. 7810140065 TOC 8/26/2015 Tables Table 1 Well Construction Summary Table 2 Constituents, Analytical Methods, & Regulatory Standards Summary Figures Figure 1 Typical Type II Monitoring Well With Prepacked Screen and Protection Figure 2 Typical Type III Monitoring Well with Prepacked Screen and Protection Drawings Drawing 1 Water Quality Monitoring Plan – Groundwater Contours Drawing 2 Water Quality Monitoring Plan – Protective Cover Appendix Appendix I Boring and Well Logs Appendix II NCDENR Well Abandonment Record and Well Construction Record Forms Appendix III NCDENR Memorandum: Groundwater, Surface Water, Soil, Sediment, and Landfill Gas Electronic Document Submittal November 5, 2014 Appendix IV NCDENR Environmental Monitoring Reporting Form Water Quality Monitoring Plan Duke Energy – Dan River Steam Station Dan River Landfill Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Page 1 of 11 8/26/2015 1 Introduction and Purpose This document provides the Water Quality Monitoring Plan (WQMP) for the Duke Energy Dan River Steam Station Landfill Development and is intended to satisfy the requirements of North Carolina Administrative Code (NCAC) Title 15A NCAC 13B .0504(1)(g)(iv). The purpose of this document is to establish procedures for leachate monitoring and for monitoring the quality of the groundwater in the shallow unconfined uppermost and lower bedrock aquifer underlying the landfill and surface water adjacent to the new landfill location during operation and post closure periods. The WQMP consists of a series of wells placed upgradient, downgradient, and side-gradient of the Dan River Landfill to monitor both background concentrations of constituents of interest (COIs) potentially associated with coal combustion residuals (CCRs) or coal ash scheduled to be placed in the landfill. The WQMP is designed to provide information to the North Carolina Department of Environment and Natural Resources (NCDENR) - Solid Waste Section (SWS) and the landfill owner and operations personnel for the purpose of evaluating potential impacts to groundwater and surface water quality prior to, during, and after landfilling operations are completed. 1.1 Project Description Duke Energy intends to construct a landfill on Dan River Steam Station property to store existing coal combustion residuals (CCRs) currently stored in four units on site. The units consist of the Primary Ash Basin, Secondary Ash Basin, and two unlined ash structural fills (Ash Fills 1 and 2). Electricity production from coal combustion ceased on April 1, 2012 and the coal-fired plant is currently undergoing decommissioning; therefore, no new coal combustion residuals (CCRs) are currently being generated at Dan River Steam Station. A combined cycle plant on station property currently produces electricity from natural gas. The proposed landfill will be constructed to facilitate placement of ash from existing on-site ash units in a lined facility by August 1, 2019 as required by the North Carolina Coal Ash Management Act of 2014. Prior to construction of the on-site landfill, Duke Energy intends to remove some of the on-site ash by rail to the Maplewood Landfill in Jetersville, Virginia. 1.2 Site Description The Dan River Steam Station is located at 900 South Edgewood Road in Eden, Rockingham County, North Carolina. The proposed landfill will be located largely within the footprint of existing Ash Fill 1 on the northeastern end of the property and comprise a total area of approximately 23.3 acres and will accept CCR material generated during closure of the existing on-site Primary and Secondary Ash Basins, and Ash Fill 2. The proposed landfill will include a liner system that provides three geosynthetic barrier components (two geomembranes and a geosynthetic clay liner) and a soil barrier component for a total of four barrier components between waste and groundwater. The ash within Ash Fill 1 will be removed prior to construction of the proposed landfill. The proposed landfill will be bound by existing overhead electrical lines to the west and north, rail lines to the east, and a natural gas pipeline to the south. 1.3 Site Geology and Hydrogeology As described in the respective Hydrogeologic Study prepared by Amec Foster Wheeler, the site is located in the Piedmont Province of North Carolina, and more specifically, lies within a Triassic Period rift basin containing primarily sedimentary rock sequences. Groundwater flow at the site is typical of the Piedmont Province two-part system of regolith and bedrock as described in the site’s Hydrogeology Study (Amec Foster Wheeler, July 15, 2015 as amended). Groundwater recharge at the site is primarily derived from infiltration of local precipitation and groundwater levels tend to fluctuate seasonally. The hydrostratigraphic units encountered at the site during the Hydrogeologic Study field investigations (pre-landfill construction or operation) included soil fill, ash fill, residuum, saprolite, partially weathered rock (PWR), weathered/fractured bedrock, sound bedrock, and minor occurrences of alluvium. Of these Water Quality Monitoring Plan Duke Energy – Dan River Steam Station Dan River Landfill Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Page 2 of 11 8/26/2015 hydrostatigraphic units, groundwater was typically encountered in the PWR and saprolite units; however, some groundwater was encountered within ash near the base of the ash fill unit. It is anticipated that the water level within the ash unit will subside to the underlying saprolite and PWR units once the current ash fill is removed and the area is lined, filled, and capped. 1.4 Well Abandonment Observation wells and monitoring wells that exist in the vicinity of proposed landfill activities and are not included in the WQMP network, will be decommissioned or abandoned in accordance with 15A NCAC 2C .0113 rules. Well abandonment activities may occur in multiple phases to coordinate with landfill construction activities. Well abandonment methods will be selected according to one (1) of the following scenarios: • If a well exists within the limit of waste (LOW) of the proposed landfill, it will be properly abandoned by overdrilling methods to remove well materials, and it will then be grouted with a cement-bentonite grout. The bentonite solids content of the grout will be approximately 30% in order to provide a more flexible grout column since extensive excavation of existing overburden material will take place. Tremie pipe will be used to place the grout continuously from the bottom of the borehole upwards. Well surface construction, i.e. concrete pads, protective covers and bollards will be removed. • If a well exists outside the LOW but within a “cut” area of the grading limits of the proposed landfill, it will be properly abandoned by overdrilling methods to remove well materials, and it will then be grouted with a cement-bentonite grout. The bentonite solids content of the grout will be approximately 30%. Tremie pipe will be used to place the grout continuously from the bottom of the borehole upwards. Well surface construction, i.e. concrete pads, protective covers and bollards will be removed. • If a well exists outside the LOW but within a “fill” area of the grading limits of the proposed landfill, it may be properly abandoned by in-place methods. No drilling is required for the in-place abandonment method. The well materials remain in-place and a cement-bentonite grout is placed with tremie pipe from the bottom of the well upwards. The bentonite solids content of the grout will be approximately 5%. Well surface construction, i.e. concrete pads, protective covers and bollards will be removed. • If a well exists outside the LOW and grading limits of the proposed landfill, then such well may be properly abandoned by in-place methods. The bentonite solids content of the grout will be approximately 5%. Well surface construction, i.e. concrete pads, protective covers and bollards will be removed. Within 30 days of completion of well abandonment activities, Well Abandonment Records (GW-30 forms) will be submitted to the NCDENR. A copy of the NCDENR Well Abandonment Record form has been included in Appendix II. 2 Groundwater Monitoring System 2.1 Monitoring Locations The following section describes the proposed monitoring network for the Dan River Ash Landfill, along with specifications associated with installing, developing, maintaining, and decommissioning facility monitoring wells. Water Quality Monitoring Plan Duke Energy – Dan River Steam Station Dan River Landfill Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Page 3 of 11 8/26/2015 2.1.1 Proposed Monitoring Network The proposed groundwater monitoring well network for the Dan River Landfill will consist of monitoring well pairs to monitor groundwater quality in the uppermost aquifer and the deeper bedrock aquifer at the site as shown on Drawing 1. Specifically, the well network will consist of two (2) upgradient background compliance monitoring well pairs (BW-1S/D and BW-2S/D), one (1) side-gradient well pair (CW-8S/D), and seven (7) downgradient well pairs (CW-1S/D, CW-2S/D, CW-3S/D, CW-4S/D, CW-5S/D, CW-6S/D, and CW-7S/D). Four (4) surface water sampling locations (SWS-1 through SWS-4) will also be established. Surface water sampling location SWS-1 is intended to serve as a background surface water location. The well and surface water sampling locations have been selected based on the potentiometric contours that currently represent site conditions. The general groundwater flow was observed to be from north to south towards the Dan River; however, localized shallow groundwater flow discharges radially from near the center of the site towards ephemeral or seasonal streams to the east and west of the proposed landfill footprint as shown on Drawing 1. Surface water flow follows topography and generally reflects surface water runoff as a result of rainfall and recharge events as well as groundwater discharge. The 10 groundwater monitoring well locations were chosen based on horizontal location in reference to surface drainage features, geologic conditions, groundwater flow directions, current property boundary and landfill features and limits. 2.1.1.1 Proposed Existing Monitoring Well Locations (Observation Wells to be Converted to Monitoring Wells) Of the 10 proposed groundwater monitoring well pairs, one (1) well pair consists of observation wells installed previously during the site’s Hydrogeologic Study. These wells were constructed in accordance with North Carolina Well Construction Standards (15A NCAC 2C .0108) and also the North Carolina Water Quality Monitoring Guidance Document for Solid Waste Facilities. Table 1 documents the labeling conversions between prior observation wells and proposed monitoring wells. 2.1.1.2 Proposed Newly Installed Monitoring Well Locations Of the 10 proposed groundwater monitoring well pairs, nine (9) well pairs will be newly installed (CW- 1S/D through CW-8S/D and BW-2S/D) at locations depicted on Drawings 1 and 2. The new monitoring well pairs will consist of a Type II well to monitor the uppermost aquifer and a Type III well to monitor the deeper bedrock aquifer and be constructed in accordance with North Carolina Well Construction Standards (15A NCAC 2C .0108) and also the North Carolina Water Quality Monitoring Guidance Document for Solid Waste Facilities. Monitoring well construction and installation details are provided below in Section 2.2 and typical Type II and Type III well diagrams have been included as Figures 1 and 2. 2.2 Monitoring Well Construction and Installation Each new monitoring well location will be constructed as Type II and Type III well pairs in accordance with the North Carolina Well Construction Standards (15A NCAC 2C .0108) and the requirements of the North Carolina Water Quality Monitoring Guidance Document for Solid Waste Facilities. A North Carolina Licensed Well Driller will drill the boreholes and construct the monitoring wells. A North Carolina Licensed Geologist will oversee drilling and well installation activities for the monitoring wells. Downhole drill tooling will be steam cleaned between each well location. Typical Type II and Type III monitoring well construction details that are described in the following sections are shown on Figures 1 and 2. Well construction details for the existing observation wells to be converted into monitoring wells are shown in Table 1, and respective boring and well logs have been provided in Appendix I. Well construction details for newly installed wells will be added to Table 1 and respective logs added to Appendix I upon completion. New wells will be located by a Professional Land Survey licensed in the state of North Carolina. Well locations will be surveyed to within 0.01 feet of horizontal and vertical. Within 30 days of completion of well installation activities, a boring log, well construction log, groundwater monitoring network map, well Water Quality Monitoring Plan Duke Energy – Dan River Steam Station Dan River Landfill Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Page 4 of 11 8/26/2015 installation certificate, and survey data will be submitted to NCDENR. A copy of the NCDENR Well Construction Record form has been included in Appendix II. 2.2.1 Type II (Uppermost Aquifer) Monitoring Wells For Type II wells, the wells will be installed in the unconsolidated (regolith) material of the uppermost aquifer and boreholes advanced using 4.25-inch I.D. hollow-stem augers and Standard Penetration Test (SPT) sampling every five (5) feet until boring termination depth. Type II wells will consist of 2-inch Schedule 40 PVC casing and screen. Screens will be prepacked, 0.010-inch machine-slotted, will be approximately 15 feet in length, and located where estimated long- term seasonal high water table is slightly below the top of the screened interval. If however, groundwater is less than five (5) feet below land surface, the top of the screen will be placed at a depth of five (5) feet below land surface to allow adequate seal and grout. Specifically, prepacked screens will consist of environmental grade sand housed in a stainless steel wire mesh cylinder around the PVC machine- slotted screen. A 20/40 sand and wire mesh size is anticipated for site conditions; however, field conditions will determine if a different size is needed to best fit the formation. The annular space between the borehole wall and well pipe (including the prepacked screen section) from the bottom of the borehole up to approximately two (2) feet above the top of the screen will consist of environmental grade silica sand properly sized to the formation material and screen. A one (1) to 2-foot pelletized or granular bentonite seal will be placed above the filter pack and hydrated. The remainder of the annular space will be filled with a cement/bentonite grout from the top of bentonite seal to near ground surface. 2.2.2 Type III (Deeper Aquifer) Monitoring Wells For Type III wells, the wells will be installed in bedrock (weathered/fractured bedrock unit or sound bedrock unit) of the deeper aquifer. Type III well boreholes will be advanced through the regolith using 8.25-inch I.D. hollow-steam augers and SPT sampling every five (5) feet until auger refusal depth. Type III wells will consist of 6-inch Schedule 40 PVC outer casing that is seated slightly into the top of bedrock and grouted into place. Outer casing grout will be allowed to cure a minimum of 48 hours prior to remaining work being performed on the well. Next, Type III well boreholes will be advanced inside and below the outer casing using HQ coring techniques (approximate 3.7-inch diameter corehole). Screens will be prepacked, 0.010-inch machine-slotted, and approximately (five) 5 feet in length. Type III screens will be placed to intersect water-bearing fractures within the bedrock unit and will have a vertical separation distance of approximately 15 to 20 feet from its corresponding Type II well screen (distance from bottom of Type II screen to top of Type III screen at a well pair location). Specifically, prepacked screens will consist of environmental grade sand housed in a stainless steel wire mesh cylinder around the PVC machine-slotted screen. A 20/40 sand and wire mesh size is anticipated for site conditions; however, field conditions will determine if a different size is needed to best fit the formation. The annular space between the corehole wall and well pipe (including the prepacked screen) from the bottom of the corehole up to approximately two (2) feet above the top of the screen will consist of environmental grade silica sand properly sized to the formation material and screen. A one (1) to 2-foot pelletized or granular bentonite seal will be placed above the filter pack and hydrated. The remainder of the annular space will be filled with a cement/bentonite grout from the top of bentonite seal to near ground surface. 2.2.3 Surface Finish (Type II and Type III Monitoring Wells) A 4-inch by 4-inch square steel or aluminum protective casing with a locking cap will be placed over the well riser pipe, extending approximately 3.5 feet above the ground surface. The protective casing will be seated into place with a 2-foot by 2-foot square concrete pad. The protective casing will also be painted and provided a permanent well tag with the following information displayed: Water Quality Monitoring Plan Duke Energy – Dan River Steam Station Dan River Landfill Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Page 5 of 11 8/26/2015 • Well ID number; • Driller registration number; • Date of well installation; • Total depth of well; • Depth of screen interval; • Depth of filter pack, seal, and grout intervals; • Depth to groundwater following well completion; and • Warning stating well is not for water supply and that groundwater may contain hazardous materials. 2.2.4 Well Protection Each monitoring well will be guarded against potential damage caused by normal site activities such as vehicle and equipment operation. The anticipated protective measures to be installed are steel bollards. Bollards or other protective measures selected will be located just off the edge of the well pads at each of the four (4) corners unless protection is provided by other means such as woods, buildings, or other structures/features. Well pairs may “share” a side of protective measures if horizontal spacing between wells is sufficiently narrow to prevent vehicle and/or equipment access between wells. Bollard installation as a protective measure is shown on Figures 1 and 2. 2.2.5 Surveying A North Carolina Registered Land Surveyor will locate each well for State Plane coordinates, ground surface elevation at the base of the well, and the top of the PVC inner well casing elevation. The survey data will be referenced to a site benchmark for horizontal control. Well locations will be surveyed to within 0.01 feet of horizontal and vertical. 2.3 Monitoring Well Development Following well installation, each monitoring well will be developed to reduce clay, silt, sand, and other fines which may have been introduced into the well or filter pack during installation. Well development will be performed using a pump, disposable bailer, or other approved method. Turbidity will be monitored during development using a field turbidity meter. Well development will continue until turbidity has been reduced to a goal of below 10 Nephelometric Turbidity Units (NTU). If a well has not reached turbidity less than 10 NTU after five (5) to 10 well volumes have been removed, the well will be allowed to sit for approximately 24 hours, then a second attempt to reach below 10 NTU will be made. If a second attempt does not reach turbidity levels below 10 NTU, the well will be allowed to sit an additional 24 hours, and a third attempt will be performed. If after three (3) attempts the well remains above 10 NTU, then NCDENR-SWS will be notified and supplied well construction and development records to determine if the turbidity is an artifact of the geologic formation in which the well is screened. 2.4 Monitoring Well In-Situ Permeability Testing No sooner than 24 hours following well development, each newly installed monitoring well be slug tested to calculate hydraulic conductivity at the well location. The hydraulic conductivity values will be used in conjunction with assumed effective porosity and horizontal groundwater gradients to estimate groundwater flow rates each monitoring event. 2.5 Monitoring Well Maintenance The wells and surrounding area will be maintained to provide adequate access for sampling activities, which could include items such as vegetation control or access road maintenance. Each monitoring well will be accessible by at least a four-wheel drive vehicle. Surface water run-on controls such as diversion berms or channels may need to be provided to inhibit erosion or deposition at the well or damage to concrete well pads. Water Quality Monitoring Plan Duke Energy – Dan River Steam Station Dan River Landfill Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Page 6 of 11 8/26/2015 In addition to access, routine maintenance of monitoring wells could include repair or replacement of well tags, locks, well caps, concrete pads, or protective covers. 3 Groundwater Monitoring Program Groundwater will be sampled and analyzed on a semi-annual basis. Constituents to be analyzed along with their respective analytical method and regulatory standards are listed in Table 2. Groundwater sample results will be compared to the 15A NCAC 2L .0202 (2L Standards) as well as the NCDENR-SWS Groundwater Protection Standards (where established). In addition, temperature, pH, specific conductivity, dissolved oxygen (DO), oxidation reduction potential (ORP), and turbidity will be measured and recorded for each sample. 3.1 Equipment Calibration A multi-parameter water quality meter will be used to measure the field parameters listed above in Section 3. Instrument calibration should be conducted at the start and end of each day, with calibration reference standards selected to bracket anticipated site groundwater conditions. 3.2 Sampling Prior to the initial sampling event, each monitoring well will be fitted with a dedicated stainless steel bladder pump and polyethylene tubing suitable for low-flow purging and sampling techniques described in Sections 3.2.2 and 3.2.3 below. If possible, the pump intake will be placed at least two (2) feet above the bottom of the well to reduce chances of mobilization of particulates present in bottom of well. The following sections detail activities associated with low-flow purging and sampling. 3.2.1 Decontamination of Field Sampling Equipment Prior to the initial sampling event, each dedicated bladder pump will be properly cleaned and rinsed with distilled and a phosphate and borax free detergent prior to installing in the well unless certified as decontaminated from the supplier. Tubing used for air intake and water discharge connections will be new certified-clean supplied directly from factory packaging. During the initial and subsequent sampling events, the water level probe will be cleaned and rinsed with distilled or deionized water prior to measuring the water level in each monitoring well. 3.2.2 Well Purging Methods 3.2.2.1 Low-Flow Method The total well depth will be recorded prior to installation of the dedicated pump and confirmed when the pump is removed for inspection or repair. Prior to purging, the initial static water level and total well depth for each well will be recorded. The volume of water held by the well pump and tubing will be calculated, as well as the total water volume in the well. Pumping rates and flow rates will be adjusted such that drawdown is no more than 0.3 feet, if possible. Pumping rates should range between 100 milliliters per min (mL/min) and 500 mL/min. Once an acceptable pumping rate and flow rate is determined for each well, the indicator parameters listed below will be measured with a multi-parameter water quality meter and flow-through cell, with the exception of turbidity, which will be measured with a separate meter. The parameters (along with discharge rate and depth to water) will be recorded over time, with the frequency of the measurements based on the time required to completely evacuate one (1) volume of the flow- through cell ( typically five (5) minute increments) until stabilization within a certain range is reached over three (3) consecutive readings. The critical indicator parameters will be pH, specific conductivity, dissolved oxygen, and turbidity. Each indicator parameter and their respective stabilization criteria is listed as follows: • pH ± 0.1 standard units; Water Quality Monitoring Plan Duke Energy – Dan River Steam Station Dan River Landfill Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Page 7 of 11 8/26/2015 • specific conductivity ± 5 percent in microsemens per centimeter (µS/cm); • dissolved oxygen (DO) ± 0.2 milligrams per liter (mg/L) or 10% saturation; • turbidity less than 10 NTUs; • temperature (recorded but not considered a purge stabilization parameter); and • oxidation reduction potential (ORP) (recorded but not considered a purge stabilization parameter). As listed above, the optimal samples will be obtained at a turbidity of 10 NTU or less. If turbidity levels are slightly above 10 NTU, but trending downward, purging shall continue. If turbidity readings are greater than 10 NTU and have stabilized to within 10% during three (3) consecutive readings, attempts should be made to contact the project manager prior to collecting the groundwater sample. If turbidity readings are greater than 10 NTU and are not stable, the project manager should be contacted and well sampling shall be based upon stabilization of more critical indicator parameter (such as DO) without attainment of the targeted turbidity. If after five (5) well volumes or two (2) hours of purging (whichever is achieved first), critical indicator parameters have not stabilized, purging will be discontinued and samples collected. Efforts used towards stabilization of the parameters (such as modified pumping rates) will be documented. 3.2.2.2 Volume-Averaging Method There may be instances in which a well has very slow recharge rates, draw down excessively at the minimum pumping rate of 100 mL/min, or require a higher pumping rate (greater than 500 mL/min) to maintain purging. In such cases, typical low-flow purging and sampling methods are not appropriate, and the volume-averaging method will be used. For the volume-averaging method, well volumes (i.e. water column volumes) will be calculated and three (3) to five (5) well volumes removed. Although indicator parameter stabilization is not required for the volume-averaging method, the parameters (as well as discharge rate and depth to water) will still be measured and recorded as follows: • Initially at the start of purging; • After each well volume is purged; and • Just before purge completion. The removal of three (3) to five (5) well volumes may not be practical in wells with slow recovery rates. If a well is purged near dryness at a rate of less than 0.5 gallons per minute (gpm), the well shall be allowed to completely recover prior to sampling. A two (2) hour limit may be exceeded to allow for sufficient recovery, but samples should be collected within 24 hours of purge completion. 3.2.3 Sample Collection For each monitoring well location, water will be transferred directly from the pump tubing prior to entry the flow-through cell into the laboratory provided, pre-preserved containers. The sample bottles will be held such that the sample liquid is allowed to run gently down the side of the bottle to reduce turbulence. The container for metals will be filled first, followed by the containers for general chemistry parameters. 3.2.4 Sample Labels Sample labels shall be placed on each sample bottle and remain legible even if wet. The sample labels should contain at a minimum, the following information: • Site name; • Sample ID; • Well ID; • Sample date and time; • Name of sampling personnel; • Constituents to be analyzed; and • Preservative (if applicable). Water Quality Monitoring Plan Duke Energy – Dan River Steam Station Dan River Landfill Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Page 8 of 11 8/26/2015 3.2.5 Sample Preservation and Handling Upon containerizing groundwater samples, the samples will be packed into pre-chilled, ice-filled coolers and either hand-delivered or shipped overnight by a commercial carrier to a NC certified laboratory for analysis. Sample preservation methods will be used to retard biological action and hydrolysis, as well as to reduce sorption effects. These methods will include chemical preservation, cooling/refrigeration at 4º C, and protection from light. Precautions will be taken to reduce movement of samples during transport, including packing the bottles securely in the cooler. A laboratory provided temperature blank will also be included in the cooler. Sample coolers should be sealed shut with sturdy tape and tamper seals placed across the cooler opening. 3.2.6 Chain-of-Custody Program Properly documented sample chain-of-custody is an essential element of data integrity. Correctly performed custody procedures inhibit the potential for sample tampering to occur. Custody procedures will trace the handling of each sample during the collection process, through analysis, until final turnover for both laboratory and field samples obtained. Chain-of-custody forms are typically provided by the laboratory and should be completed by qualified sampling staff and laboratory employees. A manually- prepared chain-of-custody record will be initiated at the time of sample kit preparation by the laboratory and will remain with the sample kit throughout sample collection, transport, and analysis. Information the chain-of-custody record may document includes: • Client name, contact, phone number and address; • Client project name; • Sampler(s) name and signature; • Name and signature of person involved in chain of possession; • Inclusive dates of possession; • Sample ID, number, matrix, type (grab or composite); • Date and time of collection; • Number and type of containers and preservative; and • Analysis method. Chain-of-custody records will be prepared by the field sampling personnel and sample numbers and chain numbers also documented in the field books. 3.2.7 Field Logbook Each field crew conducting sampling activities shall maintain a field logbook to document the activities conducted by the field crew for each day throughout the course of the field sampling event. At a minimum, the following information shall be recorded in the field logbook: • Name and location of the site; • Pre-Job Safety Brief; • Date(s) of sample event; • Name(s) and affiliation(s) of the field sampling crew; • Time of arrival to the site; • Weather conditions (including changes throughout the day); • Pertinent field observations; • Equipment calibration information; • Static water level measurements; • Date and time of well purging; • Purge volume; • Time of sample collection; Water Quality Monitoring Plan Duke Energy – Dan River Steam Station Dan River Landfill Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Page 9 of 11 8/26/2015 • Numbers and types of samples collected, sample identification numbers, and preservatives used; • A description of sampling methodology and quality control samples (field blanks, duplicates, etc.); • Water quality indicator parameter readings with time stamp; • Sample Chain of Custody reference number and cross reference to the sample form data; • Physical description and picture or sketch of the sample collection location(s) if unusual; • Record of daily phone calls and/or contact with individuals at the site; • Documentation of equipment decontamination activities; and • Description of deviations from the Work Plan. Field documentation is a crucial element of field activities and, therefore, field crew members should strictly adhere to logbook entry protocol. Key procedures of field documentation are provided below: • Logbook should be bound and weather-resistant; • Consecutively number each page of the logbook; • Make entries into the logbook in chronological order so that a time notation introduces each entry; • Use only indelible ink for logbook entries; • Record data directly and legibly in the field logbook; • Line out errors in the logbook (a single line strike-through) and initial and date the correction; • Avoid leaving blank line(s) between logbook entries. Cross out blank spaces that exist with a single line and initial and date the cross out; and • Sign and date each page of the logbook (field team member responsible for keeping the logbook). 3.3 Analytical Procedures A North Carolina certified laboratory will analyze the groundwater samples for the constituents listed in Table 2. Analysis will be performed in accordance with Environmental Protection Agency (EPA) Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (SW 846), which are also listed in Table 2. Alternate SW 846 methods may be used if they have the same or lower reporting limit. The laboratory must report a detection of any requested constituent even if it is below the Solid Waste Section Limit (SWSL); however, such concentration will be reported with a qualifier (“J” flag). The laboratory must include an electronic data deliverable (EDD) spreadsheet with the full laboratory analytical report. 3.4 Quality Assurance and Quality Control Program Quality Assurance/Quality Control samples will be collected during field activities. Temperature blanks will be provided by the laboratory in the sample coolers. Temperature blanks will be used to check the temperature of the samples upon receipt of the cooler to the laboratory. At least one (1) field duplicate sample will be prepared. A field duplicate is a duplicate sample prepared at an identical sample location, collected at the same time, in the same container type, containing equal portions of sample medium, preserved in the same way, and analyzed by the same laboratory as a measure of control. A field blank may also be collected and analyzed during each monitoring event. A field blank is a sample prepared in the field and exposed to the sampling environment. A field blank may be prepared by filling appropriate laboratory bottles with deionized water. Field QA/QC samples (except for the temperature blank) will be analyzed for the same constituents as shown in Table 2. Concentrations of any constituents found in the blanks will be used to qualify the analytical data. Any compound detected in a sample, which was also detected in any associated blank, will be qualified with a “B” flag. 4 Surface Water Monitoring Water samples will be collected from four (4) surface water locations on a semi-annual basis as shown on Drawing 1. Surface water samples will be collected by directly filling laboratory containers with stream Water Quality Monitoring Plan Duke Energy – Dan River Steam Station Dan River Landfill Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Page 10 of 11 8/26/2015 discharge water. Surface water samples will be subjected to the same sample handling, preservation, chain of custody, labeling, and field logging techniques as groundwater samples described in above sections. Surface water samples will be analyzed for the same constituents as groundwater samples (Table 2), and will be compared to respective Classifications and Water Quality Standards Applicable to Surface Waters and Wetlands of North Carolina as defined in 15A NCAC 2B .0200 (2B Standards). 5 Leachate Monitoring Leachate will be monitored at the landfill facility on a semi-annual basis. A composite, untreated leachate sample will be collected at a location to be determined pending the final leachate force main design for the facility. The leachate sample will be analyzed for the constituents listed in Table 2, and field indicator parameters of pH, temperature, and specific conductivity recorded. The leachate sample analysis will be included in semi-annual reporting, but will not be compared to any water quality standards. 6 Data Evaluation and Reporting The following sections describe anticipated deliverables in regards to this WQMP. 6.1 Well Abandonment Record Submittal As mentioned above in Section 1.4, within 30 days of completion of well abandonment activities, Well Abandonment Records (GW-30 forms) will be submitted to the NCDENR. A copy of the NCDENR GW-30 Well Abandonment Record form (version dated August 2013) has been included in Appendix II. 6.2 Well Construction Record Submittal As mentioned above in Section 2.2, within 30 days of completion of well installation activities, Well Construction Records (GW-1b Forms) will be submitted to the NCDENR. A copy of the NCDENR GW-1b Well Construction Record form (version dated August 2013) has been included in Appendix II. 6.3 Monitoring Well Installation Report Following completion of well installation related field activities, a Monitoring Well Installation Report will be prepared that will include information regarding the newly installed wells such as: • a description of field activities; • a table summarizing monitoring well construction details; • boring and well logs; • well development notes; • slug test data; • soil laboratory data; and • effective porosity estimates. 6.4 WQMP Update Information obtained from monitoring well installation activities and reported in the Monitoring Well Installation Report (described above in Section 6.3), will be included in an update to this WQMP. The WQMP Update may also address comments (if any) received from the NCDENR-SWS on this original WQMP. 6.5 Semi-Annual Monitoring Reports Groundwater, surface water, and leachate monitoring events and respective reporting will occur on a semi-annual basis. The actual months of the semi-annual events will be determined sometime after a Permit to Operate is received. Semi-Annual Monitoring Reports will be submitted within 120 days of each sampling event. Each semi-annual report will be submitted to the NCDENR-SWS via electronic Water Quality Monitoring Plan Duke Energy – Dan River Steam Station Dan River Landfill Eden, North Carolina Amec Foster Wheeler Project No. 7810140065 Page 11 of 11 8/26/2015 document submittal as described in the NCDENR Memorandum titled Groundwater, Surface Water, Soil, Sediment, and Landfill Gas Electronic Document Submittal dated November 5, 2014. A copy of the November 5, 2014 Memorandum has been included in Appendix III. Each Semi-Annual Monitoring Report will be accompanied by an NCDENR-SWS Environmental Monitoring Reporting (EMR) Form which will be signed and sealed by a North Carolina Licensed Geologist. A copy of the EMR Form has been included in Appendix IV. Details of the minimum each monitoring report should include are listed in the November 5, 2015 NCDENR Memorandum and summarized below: • Copies of laboratory reports; • Copies of sampling logs; • Table of monitoring well detections and exceedances; • Table of field parameters; • Electronic Data Deliverable (EDD) spreadsheet; • Monitoring well construction table; • Groundwater level table with flow rates; • Monitoring well location figure; and • Groundwater flow map. 7 References The references cited below were used in the preparation of this WQMP, and may or may not be referenced in above text. • Amec Foster Wheeler, July 2015. Hydrogeology Study, Duke Energy Dan River Steam Station, Project Number 7810.14.0065. • Duke Energy, June 2015. Low Flow Sampling Plan - Duke Energy Facilities – Ash Basin Groundwater Assessment Program, North Carolina. • North Carolina Department of Environment and Natural Resources, Division of Waste Management, Solid Waste Section, 2014. Groundwater, Surface Water, Soil, Sediment, and Landfill Gas Electronic Document Submittal, memorandum dated November 5, 2014. • United States Environmental Protection Agency, June 1997. SW-846 Methods for Evaluating Solid Waste, Physical/Chemical Methods, Final Update III. • United States Environmental Protection Agency, 1996. Low Stress (Low Flow) Purging and Sampling Procedure for the Collection of Ground Water Samples from Monitoring Wells, Revision 2. TABLES TA B L E 1 - W E L L C O N S T R U C T I O N S U M M A R Y WA T E R Q U A L I T Y M O N I T O R I N G P L A N DA N R I V E R L A N D F I L L Am e c F o s t e r W h e e l e r P r o j e c t N o . 7 8 1 0 . 1 4 . 0 0 6 5 No r t h i n g E a s t i n g Gr o u n d Su r f a c e El e v . (f t - M S L ) TO C E l e v . (f t - M S L ) Ma t e r i a l Di a . (i n ) In t e r v a l (f t - b g s ) Di a . (i n ) In t e r v a l (f t - b g s ) Ma t e r i a l Dia. (in)Interval (ft-bgs) BW - 1 S co n v e r t e d f r o m OW - 4 1 7 S 4/ 1 / 2 0 1 5 1 0 0 0 3 8 9 . 9 4 1 1 7 8 8 3 4 7 . 3 2 4 5 9 4 . 1 5 5 9 7 . 6 8 N / A N / A N / A 2 + 3 . 5 2 t o 1 8 . 7 Sc h . 4 0 m a c h i n e - s l o t P V C 2 1 8 . 7 t o 3 3 . 7 2 1 . 4 5 3 4 . 0 BW - 1 D co n v e r t e d f r o m OW - 4 1 7 D 4/ 1 4 / 2 0 1 5 1 0 0 0 3 8 6 . 1 3 8 1 7 8 8 3 5 0 . 6 5 1 5 9 4 . 1 8 5 9 7 . 5 8 S c h . 4 0 PV C 6 0 t o 3 3 2 + 3 . 4 1 t o 4 2 . 4 Sc h . 4 0 m a c h i n e - s l o t P V C 2 4 2 . 4 t o 4 7 . 4 1 7 . 8 7 4 7 . 7 BW - 2 S ne w w e l l T B D T B D T B D T B D T B D N / A N / A N / A 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D BW - 2 D ne w w e l l T B D T B D T B D T B D T B D S c h . 4 0 P V C 6 T B D 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 1 S ne w w e l l T B D T B D T B D T B D T B D N / A N / A N / A 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 1 D ne w w e l l T B D T B D T B D T B D T B D S c h . 4 0 P V C 6 T B D 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 2 S ne w w e l l T B D T B D T B D T B D T B D N / A N / A N / A 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 2 D ne w w e l l T B D T B D T B D T B D T B D S c h . 4 0 P V C 6 T B D 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 3 S ne w w e l l T B D T B D T B D T B D T B D N / A N / A N / A 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 3 D ne w w e l l T B D T B D T B D T B D T B D S c h . 4 0 P V C 6 T B D 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 4 S ne w w e l l T B D T B D T B D T B D T B D N / A N / A N / A 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 4 D ne w w e l l T B D T B D T B D T B D T B D S c h . 4 0 P V C 6 T B D 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 5 S ne w w e l l T B D T B D T B D T B D T B D N / A N / A N / A 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 5 D ne w w e l l T B D T B D T B D T B D T B D S c h . 4 0 P V C 6 T B D 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 6 S ne w w e l l T B D T B D T B D T B D T B D N / A N / A N / A 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 6 D ne w w e l l T B D T B D T B D T B D T B D S c h . 4 0 P V C 6 T B D 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 7 S ne w w e l l T B D T B D T B D T B D T B D N / A N / A N / A 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 7 D ne w w e l l T B D T B D T B D T B D T B D S c h . 4 0 P V C 6 T B D 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 8 S ne w w e l l T B D T B D T B D T B D T B D N / A N / A N / A 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D CW - 8 D ne w w e l l T B D T B D T B D T B D T B D S c h . 4 0 P V C 6 T B D 2 T B D Sc h . 4 0 m a c h i n e - s l o t P V C ; p r e p a c k e d 2 0 / 4 0 sa n d & w i r e m e s h 2 T B D T B D T B D No t e s : BW = b a c k g r o u n d w e l l f o r w a t e r q u a l i t y m o n i t o r i n g p la n f t - M S L = f e e t r e l a t i v e t o M e a n S e a L e v e l * Wa t e r l e v e l s m e a s u r e d o n J u n e 2 9 , 2 0 1 5 u n l e s s o t h e r wis e n o t e d . CW = c o m p l i a n c e w e l l f o r w a t e r q u a l i t y m o n i t o r i n g p la n f t - b g s = f e e t b e l o w g r o u n d s u r f a c e S a p r o l i t e = u n co n s o l i d a t e d p r o d u c t o f w e a t h e r e d b e d r o c k t h a t u s u a ll y r e t a i n s s o m e p h y s i c a l c h a r a c t e r i s t i c s o f t h e p a rent bedrock. OW = o b s e r v a t i o n w e l l f r o m s i t e h y d r o g e o l o g i c s t u d y "+ " = d e n o t e s a b o v e g r o u n d s u r f a c e P W R = p a r t i a l l y w ea t h e r e d r o c k ( S a p r o l i t e a n d w e a t h e r e d r o c k w i t h S t an d a r d P e n e t r a t i o n R e s i s t a n c e o f N > 1 0 0 a n d / o r r o c k core recovery <50%. TB D = t o b e d e t e r m i n e d Sc h . = S c h e d u l e Be d r o c k = r o c k b e l o w a u g e r d r i l l r e f u s a l d e p t h ; i . e . m a t e r i a l t h a t c o u l d n o t b e p e n e t r a t e d w i t h h o l l o w -stem augers Di a . = d i a m e t e r PV C = p o l y v i n y l c h l o r i d e in = i n c h e s N/ A = n o t a p p l i c a b l e Sc h . 4 0 P V C I n n e r C a s i n g Static Water Level* (ft-bgs) Su r v e y WE L L I D W e l l O r i g i n D a t e I n s t a l l e d Ou t e r C a s i n g Total Well Depth (ft-bgs)Predominate Hydrostratigraphic Unit of Saturated Screened Interval Saprolite BedrockScreen TBD Bedrock TBD Bedrock TBD Bedrock TBD Bedrock TBD Bedrock Bedrock TBD BedrockTBDBedrockTBDBedrockTBD Pa g e 1 o f 1 TABLE 2 - CONSTITUENTS, ANALYTICAL METHODS, & REGULATORY STANDARDS SUMMARY WATER QUALITY MONITORING PLAN DAN RIVER LANDFILL Amec Foster Wheeler Project No. 7810.14.0065 CONSTITUENT ANALYTICAL METHODS NCDENER-SWS GWP STANDARDS (µg/L) 15A NCAC 2L STANDARDS FOR GROUNDWATER (µg/L) 15A NCAC 2B STANDARDS FOR SURFACE WATER (µg/L) Arsenic, Total EPA 200.8 OR 6020 NE 10 50 Barium, Total EPA 6010 NE 700 NE Boron EPA 6010 NE 700 NE Cadmium, Total EPA 200.8 OR 6020 NE 2 2 Chloride EPA 300.0 NE 250 mg/L 230 mg/L Chromium, Total EPA 6010 NE 10 50 Copper, Total EPA 6010 NE 1 mg/L 7 Fluoride EPA 300.0 NE 2 mg/L 1.8 Iron, Total EPA 6010 NE 300 1 mg/L Lead, Total EPA 200.8 OR 6020 NE 15 25 Manganese, Total EPA 6010 NE 50 NE Mercury, Total EPA 7470 NE 1 0.012 Nickel, Total EPA 6010 NE 100 88 Nitrate as Nitrogen EPA 300.0 NE 10,000 NE pH Field NE 6.5*-8.5* 6.0-9.0 Selenium, Total EPA 200.8 OR 6020 NE 20 5 Silver, Total EPA 6010 NE 20 0.06 Sulfate EPA 300.0 NE 250 mg/L NE Total Dissolved Solids (TDS) SM2540C NE 500 mg/L NE Zinc, Total EPA 6010 NE 1000 50 Notes: Total = total recoverable metals 15A NCAC 2L = North Carolina Groundwater Quality Standards (effective April 1, 2013) µg/L = micrograms per liter mg/L = milligrams per liter Values listed under 2L and 2B Standards are in µg/L unless otherwise noted. NE = not established NCDENR-SWS GWP= North Carolina Department of Environment and Natural Resources - Solid Waste Section, Groundwater Protection Standards (effective June 13, 2011) 15A NCAC 2B = North Carolina and Environmental Protection Agency (EPA) Surface Water Quality Standards listed under Freshwater Aquatic Life (applicable to Class C streams as those found on-site); (effective May 15, 2013) * While there is not an established pH range listed under the 15A NCAC 2L Standards, the range listed in table is representative of most natural groundwater in the Piedmont Province of North Carolina Page 1 of 1 FIGURES NOT TO SCALE ~1'-2' ~2' 10'-15' ~2.5'-3' VARIABLE ~3'-3.5' ~1.5'-2' ~0.5'-1' FROM WELL PAD CORNER 3" - 4" SCHEDULE 40 STEEL BOLLARD FILLED WITH CONCRETE MOUNDED CONRETE TOP NOTE: ONE (1) BOLLARD OR OTHER PROTECTIVE MEASURE TO BE INSTALLED AT EACH CORNER OF WELL PAD (TOTAL OF 4 ) UNLESS PROTECTION PROVIDED BY WOODS, BUILDINGS, OR OTHER STRUCTURES/FEATURES. DATE: 08/17/2015 FIGURE: 17810-14-0065.05.504LDD JOB NUMBER:PREPARED BY: DATE: 07/27/2015CWM CHECKED BY: NOT TO SCALE ~1'-2' ~2' 5' ~2.5'-3'~3'-3.5' ~1.5'-2' ~0.5'-1' FROM WELL PAD CORNER 3" - 4" SCHEDULE 40 STEEL BOLLARD FILLED WITH CONCRETE MOUNDED CONRETE TOP NOTE: ONE (1) BOLLARD OR OTHER PROTECTIVE MEASURE TO BE INSTALLED AT EACH CORNER OF WELL PAD (TOTAL OF 4) UNLESS PROTECTION PROVIDED BY WOODS, BUILDINGS, OR OTHER STRUCTURES/FEATURES. DATE: 08/17/2015 FIGURE: 27810-14-0065.05.504LDD JOB NUMBER:PREPARED BY: DATE: 07/27/2015CWM CHECKED BY: DRAWINGS P R O P O S E D M O N I T O R I N G L O C A T I O N S G R O U N D W A T E R C O N T O U R S 1 N ISS U E / R E V I S I O N D E S C R I P T I O N YREVDM E N G . A P P R . C L I E N T L O G O : R E V I E W E D B Y : S C A L E : D A T U M : P R O J E C T I O N : T I T L E : P R O J E C T : D A T E : D R A W I N G N O . R E V I S I O N N O . P R O J E C T N O . : D R A W N B Y : C L I E N T : 2 8 0 1 Y O R K M O N T R O A D , S U I T E 1 0 0 C H A R L O T T E , N C 2 8 2 0 8 T E L : ( 7 0 4 ) 3 5 7 - 8 6 0 0 F A X : ( 7 0 4 ) 3 5 7 - 8 6 3 8 L I C E N S U R E : N C E N G : F - 1 2 5 3 N C G E O L O G Y : C - 2 4 7 A m e c F o s t e r W h e e l e r E n v i r o n m e n t & I n f r a s t r u c t u r e , I n c . 7 8 1 0 - 1 4 - 0 0 6 5 D A N R I V E R L A N D F I L L W A T E R Q U A L I T Y M O N I T O R I N G P L A N C H R C W M A S S H O W N - - - - - - C S J C W M C H R 0 8 / 2 6 / 2 0 1 5 D U K E E N E R G Y C A R O L I N A S , L L C E D E N , N O R T H C A R O L I N A D U K E E N E R G Y C A R O L I N A S , L L C E D E N , N O R T H C A R O L I N A SUBMITTED F O R P E R M I T R E V I E W 201502608 LEGENDS700EXISTING GRAVITY SANITARY SEWER PIPEEXISTING PIPES PROPOSED LIMIT OF WASTEEXISTING PROPERTY BOUNDARYEXISTING 100-YEAR FLOODPLAINEXISTING SANITARY SEWER FORCE MAINEXISTING NATURAL GAS PIPELINEEXISTING NATURAL GAS PIPELINE (NOT SURVEYED)EXISTING OVERHEAD ELECTRIC UTILITYEXISTING UTILITY EASEMENTEXISTING FENCEEXISTING VEGETATION BOUNDARY EXISTING SANITARY SEWER MANHOLEEXISTING RIPRAP EXISTING WETLAND EXISTING STREAM EXISTING MAJOR CONTOUR (10') (REF. 1) EXISTING MINOR CONTOUR (2') (REF. 1) GROUNDWATER SURFACE CONTOUR (JUNE 29, 2015) HDR, INC. GROUNDWATER ASSESSMENT WELL PAIRHDR, INC. GROUNDWATER ASSESSMENT WELL PROPOSED AMEC FOSTER WHEELER WATERQUALITY MONITORING PLAN WELL PAIRPROPOSED AMEC FOSTER WHEELER WATERQUALITY MONITORING PLAN SURFACE WATERSAMPLING LOCATION GROUNDWATER FLOW DIRECTIONAMEC FOSTER WHEELER HYDROGEOLOGIC STUDYWELL AMEC FOSTER WHEELER HYDROGEOLOGIC STUDYWELL PAIR DUKE ENERGY VOLUNTARY WELL PAIRV DUKE ENERGY COMPLIANCE WELL PAIR DUKE ENERGY COMPLIANCE WELLCCREFERENCES1.EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRICMETHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON FEBRUARY 7, 2014 BY LDSI, INC.2.EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM LIGHT DETECTION ANDRANGING (LIDAR) OBTAINED FROM NCDOT WEBSITE ON AUGUST 7, 2015.AMEC FOSTER WHEELER HISTORIC OBSERVATIONWELL EXISTING MAJOR CONTOUR (10') (REF. 2) EXISTING MINOR CONTOUR (2') (REF. 2) 700 P R O P O S E D M O N I T O R I N G L O C A T I O N S T O P O F P R O T E C T I V E C O V E R 2 N ISS U E / R E V I S I O N D E S C R I P T I O N YREVDM E N G . A P P R . C L I E N T L O G O : R E V I E W E D B Y : S C A L E : D A T U M : P R O J E C T I O N : T I T L E : P R O J E C T : D A T E : D R A W I N G N O . R E V I S I O N N O . P R O J E C T N O . : D R A W N B Y : C L I E N T : 2 8 0 1 Y O R K M O N T R O A D , S U I T E 1 0 0 C H A R L O T T E , N C 2 8 2 0 8 T E L : ( 7 0 4 ) 3 5 7 - 8 6 0 0 F A X : ( 7 0 4 ) 3 5 7 - 8 6 3 8 L I C E N S U R E : N C E N G : F - 1 2 5 3 N C G E O L O G Y : C - 2 4 7 A m e c F o s t e r W h e e l e r E n v i r o n m e n t & I n f r a s t r u c t u r e , I n c . 7 8 1 0 - 1 4 - 0 0 6 5 D A N R I V E R L A N D F I L L W A T E R Q U A L I T Y M O N I T O R I N G P L A N C H R C W M A S S H O W N - - - - - - C S J C W M C H R 0 8 / 2 6 / 2 0 1 5 D U K E E N E R G Y C A R O L I N A S , L L C E D E N , N O R T H C A R O L I N A D U K E E N E R G Y C A R O L I N A S , L L C E D E N , N O R T H C A R O L I N A SUBMITTED F O R P E R M I T R E V I E W 201502608 LEGEND700EXISTING MAJOR CONTOUR (10') (REF. 1) EXISTING MINOR CONTOUR (2') (REF. 1) 700700PROPOSED MAJOR CONTOUR (10') PROPOSED MINOR CONTOUR (2') 700 EXISTING MAJOR CONTOUR (10') (REF. 2) EXISTING MINOR CONTOUR (2') (REF. 2) REFERENCES1.EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRICMETHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON FEBRUARY 7, 2014 BY LDSI, INC.2.EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM LIGHT DETECTION ANDRANGING (LIDAR) OBTAINED FROM NCDOT WEBSITE ON AUGUST 7, 2015.S EXISTING GRAVITY SANITARY SEWER PIPEEXISTING PIPES PROPOSED LIMIT OF WASTEEXISTING PROPERTY BOUNDARYEXISTING 100-YEAR FLOODPLAINEXISTING SANITARY SEWER FORCE MAINEXISTING NATURAL GAS PIPELINEEXISTING NATURAL GAS PIPELINE (NOT SURVEYED)EXISTING OVERHEAD ELECTRIC UTILITYEXISTING UTILITY EASEMENTEXISTING FENCEEXISTING VEGETATION BOUNDARY EXISTING SANITARY SEWER MANHOLEEXISTING RIPRAP EXISTING WETLAND EXISTING STREAMHDR, INC. GROUNDWATER ASSESSMENT WELL PAIRHDR, INC. GROUNDWATER ASSESSMENT WELL PROPOSED AMEC FOSTER WHEELER WATERQUALITY MONITORING PLAN WELL PAIRPROPOSED AMEC FOSTER WHEELER WATERQUALITY MONITORING PLAN SURFACE WATERSAMPLING LOCATIONAMEC FOSTER WHEELER HYDROGEOLOGIC STUDYWELL AMEC FOSTER WHEELER HYDROGEOLOGIC STUDYWELL PAIR DUKE ENERGY VOLUNTARY WELL PAIRV DUKE ENERGY COMPLIANCE WELL PAIR DUKE ENERGY COMPLIANCE WELLCCAMEC FOSTER WHEELER HISTORIC OBSERVATIONWELL 700 APPENDIX I Boring and Well Logs SAPROLITE: Yellow (10YR 7/8), Hard, Elastic SILT withSand (MH) with Rock Fragments, Low Plasticity, Dry PARTIALLY WEATHERED ROCK: Brown-Yellow (10YR6/6), Very Dense, Silty Fine to Medium SAND (SM),Non-Plastic, Dry SAPROLITE: Brown-Yellow (10YR 6/6), Very Hard, SandyLean CLAY (CL) with Rock Fragments, Low Plasticity, Dryto Moist SAPROLITE: Dark Gray-Brown (10YR 4/2), Dense, SiltyFine SAND (SM), Non-Plastic, Moist SAPROLITE: Yellow-Tan (10YR 6/6), Very Dense, ClayeySAND (SC), Low Plasticity, Moist PARTIALLY WEATHERED ROCK: When SampledBecomes Gray (7.5YR 6/1), Very Dense, Silty Fine SAND(SM) with Rock Fragments, Non-Plastic, Dry to Moist (18) 8-11-29 (13.2) 15-42-50/5 (14.4) 12-32-35 (18) 10-16-26 (13.2) 7-37-50 (9.6) 25-50/5 SS-1 SS-2 SS-3 SS-4 SS-5 SS-6 CONTRACTOR: LOGGED BY: EQUIPMENT: DRILL METHOD: HOLE DIAMETER: CLOSURE METHOD: Located northwest of Ash Fill 1; Water level =21.78 feet bgs on May 27, 2015 LL (%) 6"- 6"- 6"- 6" PL (%)SAMPLES TYPE GEOTECHNICAL BORING RECORD REVIEWED BY: START DATE: 4/1/2015 COMP. DATE: 4/1/2015 10 20 30 40 50 60 70 80 90 100 ELEV (ft) FINES (%) SPT (bpf) IDENT 0 10 20 30 40 50 60 70 80 90 100 (Rec")N-COUNTorRec%/RQD% 4.25 HSA LEGENDSEE KEY SYMBOL SHEET FOR EXPLANATION OFSYMBOLS AND ABBREVIATIONS BELOW. SAEDACCO L. Eaves 7" Type II Observation Well Installed 594.2 589.2 584.2 579.2 574.2 569.2 564.2 SOIL CLASSIFICATIONAND REMARKS NM (%) 5 10 15 20 25 BORING NO.: OW-417S CME-550 REMARKS: Page 1 of 2 DEPTH (ft)0 5 10 15 20 25 30 Dan River On-Site Landfill 7810-14-0065 1000390 1788347 Eden, North Carolina PROJECT NAME: PROJECT NO.: COORD N: COORD E: LOCATION: DU K E A B S A T G E O T E C H N I C A L B O R I N G L O G D R O N S I T E L A N D F I L L B O R I N G L O G S 7 8 1 0 1 4 0 0 6 5 . G P J A M E C D U K E A B S A T . G D T 7 / 6 / 1 5 PARTIALLY WEATHERED ROCK: When SampledBecomes Gray (7.5YR 6/1), Very Dense, Silty Fine SAND(SM) with Rock Fragments, Non-Plastic, Dry to Moist Auger Refusal at 34 ft bgs (5)50/5SS-7 CONTRACTOR: LOGGED BY: EQUIPMENT: DRILL METHOD: HOLE DIAMETER: CLOSURE METHOD: Located northwest of Ash Fill 1; Water level =21.78 feet bgs on May 27, 2015 LL (%) 6"- 6"- 6"- 6" PL (%)SAMPLES TYPE GEOTECHNICAL BORING RECORD REVIEWED BY: START DATE: 4/1/2015 COMP. DATE: 4/1/2015 10 20 30 40 50 60 70 80 90 100 ELEV (ft) FINES (%) SPT (bpf) IDENT 0 10 20 30 40 50 60 70 80 90 100 (Rec")N-COUNTorRec%/RQD% 4.25 HSA LEGENDSEE KEY SYMBOL SHEET FOR EXPLANATION OFSYMBOLS AND ABBREVIATIONS BELOW. SAEDACCO L. Eaves 7" Type II Observation Well Installed 564.2 559.2 554.2 549.2 544.2 539.2 534.2 SOIL CLASSIFICATIONAND REMARKS NM (%) 35 40 45 50 55 BORING NO.: OW-417S CME-550 REMARKS: Page 2 of 2 DEPTH (ft)30 35 40 45 50 55 60 Dan River On-Site Landfill 7810-14-0065 1000390 1788347 Eden, North Carolina PROJECT NAME: PROJECT NO.: COORD N: COORD E: LOCATION: DU K E A B S A T G E O T E C H N I C A L B O R I N G L O G D R O N S I T E L A N D F I L L B O R I N G L O G S 7 8 1 0 1 4 0 0 6 5 . G P J A M E C D U K E A B S A T . G D T 7 / 6 / 1 5 Sheet 1 of 1 PROJECT:Dan River Landfill PROJECT NO:7810-14-0065 PROJECT LOCATION:Dan River Steam Station; Eden, North Carolina DRILLING CONTRACTOR:SAEDACCO 21.78 ft BGS on 5/27/2015 DRILLING METHOD:4.25" HSA LATITUDE:36.4964 DATE COMPLETED:4/1/2015 -79.7200 LOGGED BY:L. Eaves GS ELEVATION:594.15 feet Cave-In Below Well:None 597.68 feet (not depicted)Mean Sea Level (MSL) PROTECTIVE CASING: 0 Diameter:4-inch x 4-inch square Type:Steel Stickup Interval:+4 to 2 feet bgs OUTER CASING: Diameter:Not Applicable Type:Not Applicable Interval:Not Applicable INNER CASING: Diameter:2-inch Type:Sch. 40 PVC Interval:+3.52 to 18.7 feet bgs SCREEN: Diameter:2-inch Type:Sch. 40 PVC Interval:18.7 to 33.7 feet bgs FILTER PACK: Type:#2 Silica Sand Interval:17 to 34 feet bgs SEAL: Type:Bentonite Interval:15 to 17 feet bgs GROUT: Type:Neat Cement 33.7 560.45 Interval:0 to 15 feet bgs 34.0 End Cap 560.15 18.7 575.45 594.15 GS 15.0 579.15 17.0 577.15 +3.52 597.68 TOC WELL CONSTRUCTION REPORT WELL ID:OW-417 S WATER LEVEL: LONGITUDE: TOC ELEVATION: DATUM: De p t h (f t - b g s ) WELL DIAGRAM Elev (ft-MSL)WELL CONSTRUCTION DETAILS NOTES: GS=ground surface; TOC=top of inner PVC casing; bgs=below ground surface Not to Scale SAPROLITE: Yellow (10YR 7/8), Hard, Elastic SILT withSand (MH) with Rock Fragments, Low Plasticity, Dry PARTIALLY WEATHERED ROCK: Brown-Yellow (10YR6/6), Very Dense, Silty Fine to Medium SAND (SM),Non-Plastic, Dry SAPROLITE: Brown-Yellow (10YR 6/6), Very Hard, SandyLean CLAY (CL) with Rock Fragments, Low Plasticity, Dryto Moist SAPROLITE: Dark Gray-Brown (10YR 4/2), Dense, SiltyFine SAND (SM), Non-Plastic, Moist SAPROLITE: Yellow-Tan (10YR 6/6), Very Dense, ClayeySAND (SC), Low Plasticity, Moist PARTIALLY WEATHERED ROCK: When SampledBecomes Gray (7.5YR 6/1), Very Dense, Silty Fine SAND(SM) with Rock Fragments, Non-Plastic, Dry to Moist (20.4) UD-1 CONTRACTOR: LOGGED BY: EQUIPMENT: DRILL METHOD: HOLE DIAMETER: CLOSURE METHOD: Located northwest of Ash Fill 1; Water level =18.05 feet bgs on May 27, 2015 LL (%) 6"- 6"- 6"- 6" PL (%)SAMPLES TYPE GEOTECHNICAL BORING RECORD REVIEWED BY: START DATE: 4/2/2015 COMP. DATE: 4/2/2015 10 20 30 40 50 60 70 80 90 100 ELEV (ft) FINES (%) SPT (bpf) IDENT 0 10 20 30 40 50 60 70 80 90 100 (Rec")N-COUNTorRec%/RQD% 4.25 / 8.25 HSA; 5 7/8 RC; NQ2 CORE LEGENDSEE KEY SYMBOL SHEET FOR EXPLANATION OFSYMBOLS AND ABBREVIATIONS BELOW. SAEDACCO M. Flanik 12'' to 6'' to 3'' Type III Observation Well Installed 594.2 589.2 584.2 579.2 574.2 569.2 564.2 SOIL CLASSIFICATIONAND REMARKS NM (%) 5 10 15 20 25 BORING NO.: OW-417D CME-550 REMARKS: Page 1 of 2 DEPTH (ft)0 5 10 15 20 25 30 Dan River On-Site Landfill 7810-14-0065 1000386 1788351 Eden, North Carolina PROJECT NAME: PROJECT NO.: COORD N: COORD E: LOCATION: DU K E A B S A T G E O T E C H N I C A L B O R I N G L O G D R O N S I T E L A N D F I L L B O R I N G L O G S 7 8 1 0 1 4 0 0 6 5 . G P J A M E C D U K E A B S A T . G D T 7 / 6 / 1 5 PARTIALLY WEATHERED ROCK: When SampledBecomes Gray (7.5YR 6/1), Very Dense, Silty Fine SAND(SM) with Rock Fragments, Non-Plastic, Dry to Moist Auger Refusal at 33 ft bgs;Begin 5 7/8" Roller Cone WEATHERED / FRACTURED ROCK: (No SamplesObtained); Roller Cone Refusal at 33.5 ft bgs; Begin NQ2Core WEATHERED / FRACTURED ROCK: Fine-GrainedGRAYWACKE, Intensely Fractured, Horizontal, Low, andHigh Angle Fractures, Moderate to Slight Staining WEATHERED / FRACTURED ROCK: Fine-GrainedGRAYWACKE, Moderately Fractured, Horizontal, Low, andHigh Angle Fractures, No Staining Boring Terminated at 48.5 ft bgsSoil Lithologic Descriptions Obtained From OW-417SBoring 74 0 100 24 100 48 CORE-1 CORE-2 CORE-3 CONTRACTOR: LOGGED BY: EQUIPMENT: DRILL METHOD: HOLE DIAMETER: CLOSURE METHOD: Located northwest of Ash Fill 1; Water level =18.05 feet bgs on May 27, 2015 LL (%) 6"- 6"- 6"- 6" PL (%)SAMPLES TYPE GEOTECHNICAL BORING RECORD REVIEWED BY: START DATE: 4/2/2015 COMP. DATE: 4/2/2015 10 20 30 40 50 60 70 80 90 100 ELEV (ft) FINES (%) SPT (bpf) IDENT 0 10 20 30 40 50 60 70 80 90 100 (Rec")N-COUNTorRec%/RQD% 4.25 / 8.25 HSA; 5 7/8 RC; NQ2 CORE LEGENDSEE KEY SYMBOL SHEET FOR EXPLANATION OFSYMBOLS AND ABBREVIATIONS BELOW. SAEDACCO M. Flanik 12'' to 6'' to 3'' Type III Observation Well Installed 564.2 559.2 554.2 549.2 544.2 539.2 534.2 SOIL CLASSIFICATIONAND REMARKS NM (%) 35 40 45 50 55 BORING NO.: OW-417D CME-550 REMARKS: Page 2 of 2 DEPTH (ft)30 35 40 45 50 55 60 Dan River On-Site Landfill 7810-14-0065 1000386 1788351 Eden, North Carolina PROJECT NAME: PROJECT NO.: COORD N: COORD E: LOCATION: DU K E A B S A T G E O T E C H N I C A L B O R I N G L O G D R O N S I T E L A N D F I L L B O R I N G L O G S 7 8 1 0 1 4 0 0 6 5 . G P J A M E C D U K E A B S A T . G D T 7 / 6 / 1 5 PR O J E C T : CL I E N T : AU G E R R E F U S A L D E P T H : ft b g s LA T I T U D E : DA T E D R I L L E D : R O L L E R C O N E R E F U S A L D E P T H : ft b g s LO N G I T U D E : DR I L L R I G : CO R I N G T E R M I N A T I O N D E P T H : ft b g s GR O U N D E L E V A T I O N : DR I L L E R : WA T E R L E V E L : LO G G E D B Y : CO R E S I Z E : CO R E B O X # : 1 o f 1 TO P O F B O X : 3 3 . 5 f t b g s BO T T O M O F B O X : 4 8 . 5 f t b g s DE S C R I P T I O N : 38 . 5 t o 4 8 . 5 f t b g s : 33 . 5 t o 3 8 . 5 f t b g s : WE A T H E R E D / F R A C T U R E D R O C K : F i n e - G r a i n e d GR A Y W A C K E , I n t e n s e l y F r a c t u r e d , H o r i z o n t a l , L o w , a n d H i g h A n gle Fractures, Moderate to Sl i g h t S t a i n i n g WE A T H E R E D / F R A C T U R E D R O C K : F i n e - G r a i n e d GR A Y W A C K E , M o d e r a t e l y F r a c t u r e d , H o r i z o n t a l , L o w , a n d H i g h A ngle Fractures, No Staining Du k e E n e r g y 33 . 0 36.4964 4/ 1 4 - 1 5 / 2 0 1 5 33 . 5 -79.7200 Di e d r i c h D - 5 0 T u r b o 48 . 5 594.18 Ri c h y L e m i r e 19 . 3 0 f t b g s o n 4 / 3 0 / 1 5 NO T E S : T y p e I I I M o n i t o r i n g W e l l I n s t a l l e d t o 47 . 7 f t b g s w i t h 5 - f t s c r e e n 4 2 . 4 - 4 7 . 4 f t b g s . Ro d n e y C l a r k NQ 2 DA N R I V E R L A N D F I L L RO C K C O R E P H O T O L O G : O W - 4 1 7 D DA N R I V E R S T E A M S T A T I O N , E d e n , N C Am e c F o s t e r W h e e l e r P r o j e c t N o . 7 8 1 0 - 1 4 - 0 0 6 5 Pa g e 1 o f 1 Sheet 1 of 1 PROJECT:Dan River Landfill PROJECT NO:7810-14-0065 PROJECT LOCATION:Dan River Steam Station; Eden, North Carolina DRILLING CONTRACTOR:18.05 ft BGS on 5/27/2015 DRILLING METHOD: LATITUDE:36.4964 DATE COMPLETED:-79.7200 LOGGED BY:GS ELEVATION:594.18 feet Cave-In Below Well:47.7-48.5 ft bgs 597.58 feet (not depicted)Mean Sea Level (MSL) PROTECTIVE CASING: 0 Diameter:4-inch x 4-inch square Type:Steel Stickup Interval:+4 to 2 feet bgs OUTER CASING: Diameter:6-inch Type:Sch. 40 PVC Interval:0 to 33 feet bgs INNER CASING: 33.0 561.18 Diameter:2-inch Type:Sch. 40 PVC Interval:+3.41 to 42.4 feet bgs 41.8 552.38 SCREEN: 42.0 552.18 Diameter:2-inch Type:Sch. 40 PVC Interval:42.4 to 47.4 feet bgs FILTER PACK: Type:Not Applicable Interval:Not Applicable SEAL: Type:Bentonite & K-Packer Interval:31.5 to 42 feet bgs GROUT: Type:Neat Cement 47.4 546.78 Interval:0 to 31.5 feet bgs 47.7 End Cap 546.48 42.4 551.78 +3.41 597.58 TOC 594.18 GS 31.5 562.68 WELL CONSTRUCTION DETAILS WELL CONSTRUCTION REPORT WELL ID:OW-417 D WATER LEVEL: 4/14/2015 LONGITUDE: TOC ELEVATION: DATUM: De p t h (f t - b g s ) WELL DIAGRAM Elev (ft-MSL) Flanik/Clark 8.25"HSA/NQ2 core SAEDACCO NOTES: GS=ground surface; TOC=top of inner PVC casing; bgs=below ground surface Not to Scale APPENDIX II NCDENR Well Abandonment Record and Well Construction Record Forms WELL ABANDONMENT RECORD This form can be used for single or multiple wells Form GW-30 North Carolina Department of Environment and Natural Resources – Division of Water Resources Revised August 2013 1. Well Contractor Information: Well Contractor Name (or well owner personally abandoning well on his/her property) NC Well Contractor Certification Number Company Name 2. Well Construction Permit #: List all applicable well permits (i.e. County, State, Variance, Injection, etc.) if known 3. Well use (check well use): Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation Non-Water Supply Well: □Monitoring □Recovery Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop) □Tracer □Geothermal (Heating/Cooling Return) □Other (explain under 7g) 4. Date well(s) abandoned: 5a. Well location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W CONSTRUCTION DETAILS OF WELL(S) BEING ABANDONED Attach well construction record(s) if available. For multiple injection or non-water supply wells ONLY with the same construction/abandonment, you can submit one form. 6a. Well ID#: 6b. Total well depth: (ft.) 6c. Borehole diameter: (in.) 6d. Water level below ground surface: (ft.) 6e. Outer casing length (if known): (ft.) 6f. Inner casing/tubing length (if known): (ft.) 6g. Screen length (if known): (ft.) WELL ABANDONMENT DETAILS 7a. Number of wells being abandoned: For multiple injection or non-water supply wells ONLY with the same construction/abandonment, you can submit one form. 7b. Approximate volume of water remaining in well(s): (gal.) FOR WATER SUPPLY WELLS ONLY: 7c. Type of disinfectant used: 7d. Amount of disinfectant used: 7e. Sealing materials used (check all that apply): □ Neat Cement Grout □ Bentonite Chips or Pellets □ Sand Cement Grout □ Dry Clay □ Concrete Grout □ Drill Cuttings □ Specialty Grout □ Gravel □ Bentonite Slurry □ Other (explain under 7g) 7f. For each material selected above, provide amount of materials used: 7g. Provide a brief description of the abandonment procedure: 8. Certification: Signature of Certified Well Contractor or Well Owner Date By signing this form, I hereby certify that the well(s) was (were) abandoned in accordance with 15A NCAC 02C .0100 or 2C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. 9. Site diagram or additional well details: You may use the back of this page to provide additional well site details or well abandonment details. You may also attach additional pages if necessary. SUBMITTAL INSTRUCTIONS 10a. For All Wells: Submit this form within 30 days of completion of well abandonment to the following: Division of Water Resources, Information Processing Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617 10b. For Injection Wells: In addition to sending the form to the address in 10a above, also submit one copy of this form within 30 days of completion of well abandonment to the following: Division of Water Resources, Underground Injection Control Program, 1636 Mail Service Center, Raleigh, NC 27699-1636 10c. For Water Supply & Injection Wells: In addition to sending the form to the address(es) above, also submit one copy of this form within 30 days of completion of well abandonment to the county health department of the county where abandoned. For Internal Use ONLY: WELL CONSTRUCTION RECORD This form can be used for single or multiple wells Form GW-1 North Carolina Department of Environment and Natural Resources – Division of Water 5HVRXUFHV Revised AXJXVW 2013 1. Well Contractor Information: Well Contractor Name NC Well Contractor Certification Number Company Name 2. Well Construction Permit #: List all applicable well permits (i.e. County, State, Variance, ,QMHFWLRQetc.) 3. Well Use (check well use): Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation Non-Water Supply Well: □Monitoring □Recovery Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop) □Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks) 4. Date Well(s) Completed: ____________ Well ID#______________________ 5a. Well Location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and Longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W 6. Is (are) the well(s): □Permanent or □Temporary 7. Is this a repair to an existing well: □Yes or □No If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form. 8. Number of wells constructed: For multiple injection or non-water supply wells ONLY with the same construction, you can submit one form. 9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′) 10. Static water level below top of casing: (ft.) If water level is above casing, use “+” 11. Borehole diameter: (in.) 12. Well construction method: (i.e. auger, rotary, cable, direct push, etc.) FOR WATER SUPPLY WELLS ONLY: 13a. Yield (gpm) Method of test: 13b. Disinfection type: Amount: 14. WATER ZONES FROM TO DESCRIPTION ft. ft. ft. ft. 15. OUTER CASING (for multi-cased wells) OR LINER (if applicable) FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in. 16. INNER CASING OR TUBING (geothermal closed-loop) FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in. ft. ft. in. 17. SCREEN FROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL ft. ft. in. ft. ft. in. 18. GROUT FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT ft. ft. ft. ft. ft. ft. 19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD ft. ft. ft. ft. 20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.) ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. 21. REMARKS 22. Certification: Signature of Certified Well Contractor Date By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. 23. Site diagram or additional well details: You may use the back of this page to provide additional well site details or well construction details. You may also attach additional pages if necessary. SUBMITTAL INSTUCTIONS 24a. For All Wells: Submit this form within 30 days of completion of well construction to the following: Division of Water Resources, Information Processing Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617 24b. For Injection Wells ONLY: In addition to sending the form to the address in 24a above, also submit a copy of this form within 30 days of completion of well construction to the following: Division of Water Resources, Underground Injection Control Program, 1636 Mail Service Center, Raleigh, NC 27699-1636 24c. For Water Supply & Injection Wells: Also submit one copy of this form within 30 days of completion ofwell construction to the county health department of the county whereconstructed. For Internal Use ONLY: 4 _______________ APPENDIX III NCDENR Memorandum: Groundwater, Surface Water, Soil, Sediment, and Landfill Gas Electronic Document Submittal November 5, 2014 North Carolina Department of Environment and Natural Resources Division of Waste Management Pat McCrory John E. Skvarla, III Governor Secretary 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 2090 US Highway 70, Swannanoa, North Carolina 28778-82111 Phone: 919-707-8200 Phone: 828-296-4500 http://portal.ncdenr.org/web/wm/ An Equal Opportunity / Affirmative Action Employer 1RYHPEHU MEMORANDUM To: Solid Waste Directors, Public Works Directors, Landfill Operators, and Landfill Owners From: Solid Waste Section Re: Groundwater, Surface Water, Soil, Sediment, and Landfill Gas Electronic Document Submittal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x $OOILOHVPXVWEHLQSRUWDEOHGRFXPHQWIRUPDWSGIH[FHSWIRU(OHFWURQLF'DWD'HOLYHUDEOHV(''V XQOHVVRWKHUZLVHVSHFLILHGE\WKH6ROLG:DVWH6HFWLRQ$OOSGIILOHVVKRXOGPHHWWKHVHUHTXLUHPHQWV o 2SWLFDO&KDUDFWHULVWLF5HFRJQLWLRQ2&5DSSOLHG o 0LQLPXPRIGSL o )UHHRISDVVZRUGSURWHFWLRQVDQGRUHQFU\SWLRQVDSSOLHVWR(''VDVZHOO o 2SWLPL]HGWRUHGXFHILOHVL]HDQG o 3OHDVHEHJLQXVLQJWKHIROORZLQJQDPLQJFRQYHQWLRQZKHQVXEPLWWLQJDOOHOHFWURQLFILOHV3HUPLW 1XPEHUB'DWHRI'RFXPHQW<<<<00'')RUH[DPSOHB x 3OHDVHVXEPLWDOOILOHVYLDHPDLORUE\ILOHWUDQVIHUSURWRFRO)73YLDHPDLOWRWKHDSSURSULDWH +\GURJHRORJLVWXQOHVVRWKHUZLVHVSHFLILHGE\WKH6ROLG:DVWH6HFWLRQ,IWKHHOHFWURQLFILOHLVJUHDWHU WKDQ0%SOHDVHVXEPLWWKHILOHYLD)73RURQD&',IVXEPLWWLQJD&'SOHDVHPDLOWKH&'WRWKH DSSURSULDWH+\GURJHRORJLVW7KH&'VKRXOGEHODEHOHGZLWKWKHIDFLOLW\QDPHSHUPLWQXPEHUFRXQW\ QDPHRIGRFXPHQWGDWHRIPRQLWRULQJHYHQWLIDSSOLFDEOHDQGWKHGDWHRIGRFXPHQW x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x $FRS\RIWKHODERUDWRU\UHSRUWV x $FRS\RIWKHVDPSOLQJORJV x $VHSDUDWHWDEOHRIGHWHFWLRQVDQGH[FHHGDQFHVIRUHDFKPRQLWRULQJORFDWLRQ 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 2090 US Highway 70, Swannanoa, North Carolina 28778-82111 Phone: 919-707-8200 Phone: 828-296-4500 http://portal.ncdenr.org/web/wm/ An Equal Opportunity / Affirmative Action Employer o $OODQDO\WLFDOUHVXOWVVKRXOGEHUHSRUWHGLQPLFURJUDPVSHUOLWHUXJ/H[FHSWIRUILHOG SDUDPHWHUVDQGVSHFLILF0RQLWRUHG1DWXUDO$WWHQXDWLRQ01$SDUDPHWHUV o 3OHDVHDOVRLQFOXGHWKHODERUDWRU\¶VPHWKRGGHWHFWLRQOLPLW0'/LQXJ/WKH6ROLG:DVWH 6HFWLRQ/LPLW6:6/LQXJ/WKHDSSURSULDWH1&UHJXODWRU\VWDQGDUGLQXJ//% *:36,0$&DQGWKH)HGHUDO0D[LPXP&RQWDPLQDQW/HYHO0&/LQXJ/ o 3OHDVHBOLD HDFKH[FHHGDQFHUHVXOW x $VHSDUDWHWDEOHRIILHOGSDUDPHWHUVIRUHDFKPRQLWRULQJORFDWLRQ x $Q(OHFWURQLF'DWD'HOLYHUDEOH(''VSUHDGVKHHWIRUHDFKPRQLWRULQJHYHQWVXEPLWWHGLQWKHFRUUHFW IRUPDW$OODQDO\WLFDOUHVXOWVVKRXOGEHUHSRUWHGLQPLFURJUDPVSHUOLWHUXJ/H[FHSWIRUILHOG SDUDPHWHUVDQGVSHFLILF0RQLWRUHG1DWXUDO$WWHQXDWLRQ01$SDUDPHWHUV7KHEODQN(''WHPSODWH FDQEHGRZQORDGHGDWKWWSZZZZDVWHQRWQFRUJVZKRPHHQYLURBPRQLWRULQJDVS3OHDVHSD\ DWWHQWLRQWRWKHIRUPDWVZLWKLQWKHVSUHDGVKHHW$Q\(''UHFHLYHGWKDWLVQRWIRUPDWWHGFRUUHFWO\ZLOO EHHPDLOHGEDFNWREHUHVXEPLWWHGYLDHPDLOZLWKLQILYHGD\V x $VHSDUDWHJURXQGZDWHUPRQLWRULQJZHOOFRQVWUXFWLRQWDEOH o 3OHDVHDOVRLQFOXGHWKHGDWHWKHZHOOZDVGULOOHGZHOOGLDPHWHUWRWDOZHOOGHSWKGHSWKWRWRS RIVFUHHQHGLQWHUYDOLQIHHWVFUHHQHGLQWHUYDOLQIHHWJHRORJ\RIVFUHHQHGLQWHUYDO72& HOHYDWLRQJURXQGHOHYDWLRQJURXQGZDWHUHOHYDWLRQ*36FRRUGLQDWHVODWLWXGHDQGORQJLWXGH DQGGHSWKWRZDWHULQIHHW x $VHSDUDWHJURXQGZDWHUWDEOHZLWKJURXQGZDWHUIORZUDWHV x $UHFHQWIDFLOLW\ILJXUHWKDWLQFOXGHVODEHOHGJURXQGZDWHUDQGVXUIDFHZDWHUPRQLWRULQJORFDWLRQV x $JURXQGZDWHUIORZPDSZLWKDQDUURZVLQGLFDWLQJIORZGLUHFWLRQVLQFOXGLQJGDWHWKH PHDVXUHPHQWVZHUHWDNHQ 6RLODQG6HGLPHQW6DPSOLQJ x $FRS\RIWKHODERUDWRU\UHSRUWV x $FRS\RIWKHVDPSOLQJORJV x $VHSDUDWHWDEOHRIGHWHFWLRQVDQGH[FHHGDQFHVIRUHDFKVDPSOLQJORFDWLRQ o 3OHDVHDOVRLQFOXGHWKHUHVXOWVLQPLFURJUDPVSHUOLWHUXJ/WKHODERUDWRU\¶VPHWKRG GHWHFWLRQOLPLW0'/LQXJ/DQGWKHDSSURSULDWH1&UHJXODWRU\VWDQGDUG365*LQXJ/ o 3OHDVHBOLD HDFKH[FHHGDQFHUHVXOW x $VHSDUDWHWDEOHRIVRLODQGRUVHGLPHQWFKDUDFWHULVWLFV x $UHFHQWIDFLOLW\ILJXUHWKDWLQFOXGHVODEHOHGVDPSOLQJORFDWLRQV /DQGILOO*DV0RQLWRULQJ x $EODQN/DQGILOO*DV0RQLWRULQJ'DWD)RUPFDQEHIRXQGZLWKLQWKHLandfill Gas Monitoring GuidanceGRFXPHQWDQGFDQEHGRZQORDGHGDW KWWSSRUWDOQFGHQURUJFGRFXPHQWBOLEUDU\JHWBILOH"XXLG GDIHF DIDHIGFE JURXS,G x $VHSDUDWHWDEOHRIODQGILOOJDVGHWHFWLRQVDQGH[FHHGDQFHVIRUHDFKPRQLWRULQJORFDWLRQ3OHDVHBOLD HDFKH[FHHGDQFHUHVXOW x $UHFHQWIDFLOLW\ILJXUHWKDWLQFOXGHVODEHOHGODQGILOOJDVPRQLWRULQJORFDWLRQVERWKSHUPDQHQWDQG WHPSRUDU\ ,I \RX KDYH DQ\ TXHVWLRQV RU FRQFHUQV UHJDUGLQJ HOHFWURQLF VXEPLWWDOV SOHDVH IHHO IUHH WR FRQWDFW WKH +\GURJHRORJLVWRYHUVHHLQJ\RXUIDFLOLW\7KH6ROLG:DVWH6HFWLRQJUHDWO\DSSUHFLDWHV\RXUDVVLVWDQFHRQ WKLVPDWWHU:RUNLQJWRJHWKHUZHFDQFRQWLQXHWRSURYLGHH[FHOOHQWFXVWRPHUVHUYLFHWR\RXDQGWRWKH SXEOLF x -DFNLH'UXPPRQG$VKHYLOOH5HJLRQDO2IILFHMDFO\QQHGUXPPRQG#QFGHQUJRY x (UYLQ/DQH5DOHLJK&HQWUDO2IILFHHUYLQODQH#QFGHQUJRY x (OL]DEHWK:HUQHU5DOHLJK&HQWUDO2IILFHHOL]DEHWKZHUQHU#QFGHQUJRY x &KULVWLQH5LWWHU5DOHLJK&HQWUDO2IILFHFKULVWLQHULWWHU#QFGHQUJRY x 3HUU\6XJJ5DOHLJK&HQWUDO2IILFHSHUU\VXJJ#QFGHQUJRY APPENDIX IV NCDENR Environmental Monitoring Reporting Form