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HomeMy WebLinkAbout7606_Renewal Application_DIN26596_20160809Offices Nationwide FACILITY PLAN UPDATE PTC and PTO Renewal Application Gold Hill Road C&D Landfill Solid Waste Permit 7606-CDLF-2001 Submitted to: NCDEQ Division of Waste Management Solid Waste Section 217 W Jones Street Raleigh, NC 27603 Presented To: Morton and Sewell Land Company, LLC 385 Gold Hill Road Asheboro, North Carolina 27203 Presented by: SCS ENGINEERS, PC 322 Chapanoke Road, Suite 101 Raleigh, NC 27603 (919) 662-3015 March 2016 File No. 02214705.00 Offices Nationwide www.scsengineers.com 7606-CDLF-2001 8/9/2016 26596 8/9/2016 SCS Engineers, P.C. Environmental Consultants 322 Chapanoke Road 919 662-3015 and Contractors Suite 101 FAX 919 662-3017 Raleigh, NC 27603-3415 www.scsengineers.com | | Offices Nationwide March 8, 2016 File No. 02214705.00 Task 6 Mr. Ed Mussler, PE. Permitting Branch, Solid Waste Section NCDEQ Division of Waste Management Green Square, 217 West Jones Street Raleigh, North Carolina 27603 Subject: Facility Plan Update with Permit to Construct Application Gold Hill Road C&D Landfill Phases 1A and 1B NC Solid Waste Permit #76-06-CDLF- 2001 (Randolph County) Dear Ed: On behalf of Gold Hill Road C&D Landfill, SCS Engineers, PC (SCS) has prepared this application for a Permit to Construct for Phases 1A and 1B, and a Permit to Operate renewal, including a Facility Plan Update per North Carolina Solid Waste Rules 15A NCAC 13B .0531, et seq. The update was requested in late 2015 by Mr. John Murray, PE of the Solid Waste Section. Key to this project is recognizing that Phase 1 was permitted as a CDLF in 2009 by others, while Phase 2 has been operating as a CDLF since 2001 (approximately). The Facility management plans to remove stockpiled LCID from Phase 1 and convert the airspace for C&D disposal in small increments. This application includes updates to the Water Quality and Landfill Gas Monitoring Plans, in addition to an Updated Operation Plan that reflects the recycling activities conducted at the facility. If you have any questions about this work, or if we may be of further service, please contact us at your earliest convenience. Sincerely, G. David Garrett, PG, PE H. James Law, PE, BCEE Project Manager Project Director SCS ENGINEERS, PC SCS ENGINEERS, PC gdg/hjl 3/8/2016 Enclosures cc: Mr. Al Morton - Owner/Operator Mr. John Murray, PE - NCDEQ Division of Waste Management C:\Users\3921gdg\Documents\Projects\02214705.00 Goldhill Road CDLF\T0006 2015 Permit Renewal\Working Documents\Cover sheet and letter.docx Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update | | FACILITY PLAN UPDATE Gold Hill Road C&D Landfill Solid Waste Permit 7606-CDLF-2001 Submitted to: NCDEQ Division of Waste Management Solid Waste Section 217 W Jones Street Raleigh, NC 27603 Presented To: Morton and Sewell Land Company, LLC 385 Gold Hill Road Asheboro, North Carolina 27203 Presented By: SCS ENGINEERS 322 Chapanoke Road, Suite 101 Raleigh, NC 27603 (919) 662-3015 March 7, 2016 File No. 02214705.00 Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update i Table of Contents Section Page FOREWORD......................................................................................................................................... iii OWNER/OPERATOR INFORMATION ............................................................................................ iv SITE LOCATION DATA ....................................................................................................................... iv 1.0 FACILITY PLAN ........................................................................................................................ 1 1.1 Regulatory Summary ............................................................................................................. 1 1.2 Facility Drawings .................................................................................................................... 1 1.2.1 Facility Layout ........................................................................................................... 1 1.2.2 Operational Sequence ............................................................................................ 2 1.3 FACILITY REPORT ........................................................................................................................ 2 1.3.1 Waste Stream ........................................................................................................... 2 1.3.2 Landfill Capacity ...................................................................................................... 3 1.3.3 Special Engineering Features ................................................................................. 5 1.3.4 Soil Volume Analysis ................................................................................................ 5 2.0 ENGINEERING PLAN ............................................................................................................. 6 2.1 Engineering Report ................................................................................................................ 6 2.1.1 Analytical Methods ................................................................................................... 6 2.1.2 Identified Critical Conditions .................................................................................. 7 2.1.3 Technical References ................................................................................................ 8 2.1.4 Location Restriction Demonstrations ....................................................................... 8 2.2 Construction Materials and Practices .................................................................................. 8 2.3 Design Hydrogeologic Report ............................................................................................. 9 2.4 Engineering Drawings ............................................................................................................ 9 2.4.1 Existing Conditions .................................................................................................... 9 2.4.2 Grading Plan ............................................................................................................. 9 2.4.3 Stormwater Segregation ....................................................................................... 9 2.4.4 Final Cap System ...................................................................................................... 9 2.4.5 Temporary and Permanent S&EC ......................................................................... 9 2.4.6 Vertical Separation ............................................................................................... 10 2.4.7 Other Features ....................................................................................................... 10 2.5 Engineering Calculations .................................................................................................... 10 2.5.1 Settlement ............................................................................................................... 10 2.5.2 Slope Stability ........................................................................................................ 11 2.5.2.1 Deep-seated stability ........................................................................................... 12 2.5.2.2 Veneer Stability ..................................................................................................... 13 2.5.3 Final Slope Ratios .................................................................................................. 14 Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update ii 3.0 CONSTRUCTION PLAN ...................................................................................................... 15 3.1 Horizontal Separation ........................................................................................................ 15 3.1.1 Property Lines......................................................................................................... 15 3.1.2 Residences and Wells ........................................................................................... 15 3.1.3 Surface Waters ..................................................................................................... 15 3.1.4 Existing Landfill Units ............................................................................................ 15 3.2 Vertical Separation ............................................................................................................ 15 3.2.1 Settlement ............................................................................................................... 15 3.2.2 Soil Consistency ...................................................................................................... 16 3.3 Survey Control Benchmarks ............................................................................................... 16 3.4 Location Coordinates .......................................................................................................... 16 3.5 Landfill Subgrade ............................................................................................................... 16 3.5.1 Subgrade Inspection Requirement ...................................................................... 16 3.5.2 Division Notification ............................................................................................... 17 3.5.3 Vertical Separation Compliance ........................................................................ 17 3.6 Special Engineering Features ............................................................................................ 17 3.7 Sedimentation and Erosion Control .................................................................................. 17 4.0 FINANCIAL ASSURANCE .................................................................................................... 18 5.0 CERTIFICATION .................................................................................................................... 19 APPENDICES 1 Facility Plan Drawings 2 Design Hydrogeologic Report 3 Engineering Calculations 4 Construction Quality Assurance Plan 5 Operations Plan Update 6 Closure/Post-Closure Plan 7 Ground Water Monitoring Plan 8 Landfill Gas Monitoring Plan Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update iii FOREWORD This Facility Plan was prepared in accordance with North Carolina Solid Waste Rules 15A NCAC 13B .0531, et seq., in conjunction with a application for a minor modification to the Operations Plan of the CDLF, Permit #76-06. The operational permit was renewed in February 2014, at which time monitoring plans and financial assurance was approved. At this time, the Facility needs additional disposal capacity and desires to construct and operate Phase 1 in two subphases designated as Phase 1A and 1B. Phase 1A will be operated in two cells designated at Phase 1A-1 and 1A-2, which are contiguous to the current operational footprint (Phase 2). A vertical expansion designated Phase 1C is included in this application, but there is future expansion potential not included. A brief historical perspective is warranted. The facility began operations ca. 2001 as a mixed LCID and C&D recycling and disposal facility. The original designations were Phase 1 for the LCID side and Phase 2 for a separate CDLF footprint. Each phase was constructed in accordance with approved plans and designed to maintain a minimum 4 feet of vertical separation between base grades and the seasonal high ground water levels. In 2009 the facility permit underwent a substantial amendment (prepared by others), which connected the footprints across a shallow drainage feature and designated the entire 20.27 acre footprint as a C&D disposal unit. This document serves as a Permit to Construct (PTC) application for Phase 1A, along with renewal of the Permit to Operate (PTO) for Phase 2. Current plans are to excavate the LCID from Phase 1 incrementally and convert this airspace to C&D. The excavation will extend to the original permitted grades. Each constructed area will be evaluated to verify compliance with current Solid Waste Rules for subgrade consistency and vertical separation. Future PTO applications will be submitted for Phase 1A-1 and subsequent cells as they are completed, including CQA documentation and updated Financial Assurance, as required. Concurrent plans include incremental closure of Phase 2 and future portions of Phase 1 as exterior slopes come to grade, keeping the bondable open area at approximately 6 acres, consistent with current conditions (see Appendix 1). Earlier studies for the 2009 permitting included a design hydrogeologic evaluation for the 20.27-acre footprint: “Design Hydrogeologic Investigation Report Gold Hill Road Solid Waste Management Facility, Cell 1 and Cell 2 Combination,” prepared by Cohesion, Inc., revised March 2009 (see Appendix 2). Approved sedimentation and erosion control (S&EC) measures appear to be functioning as planned, as are the monitoring wells. The facility is permitted to accept up to 125 cubic yards (approximately 70 tons) per day of C&D and LCID debris. Waste intake has been variable due to regional economic conditions. The service area is defined as Randolph and all adjacent counties. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update iv Facility drawings, Operations Plan and Facility Plan have been updated for this permit modification. This document includes an updated Closure/Post-Closure Plan and preliminary Financial Assurance calculations, which have been updated to address the operation plans and incremental closure schedule. This document updates the 2014 PTO submittal and supersedes all previous versions. Within this document are the following updates, prepared in accordance with Rule 15A NCAC 13B .0535:  Facility Plan Update, prepared in accordance with Rule .0537  Engineering Plan prepared in accordance with Rule .0539  Operation Plan Update prepared in accordance with Rule .0541  Closure and Post-Closure Plan Update prepared in accordance with Rule .0543, which incorporates a Construction Quality Assurance Plan as required by Rules .0543 and .0541  Monitoring Plan Update prepared in accordance with Rule .0544. OWNER/OPERATOR INFORMATION Mr. Al Morton – Managing Member Morton and Sewell Land Company, LLC 385 Gold Hill Road Asheboro, NC 27203 Tel. 336-629-7175 SITE LOCATION DATA LATTITUDE 35.71778 N LONGITUDE -79.48895 E PARCEL NUMBER 77611479668 Deed Date 1/17/1996 Randolph County, NC Deed Book 002113 Deed Page 01392 Plat Book 53 Plat Page 64 Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 1 1.0 FACILITY PLAN 1.1 REGULATORY SUMMARY 15A NCAC 13B .0539 et seq. requires a comprehensive facility plan that identifies future development in phases that correspond approximately to 5-year operational capacities. The facility plan must identify and show all relevant permitted Solid Waste units and activities conducted (or proposed) at the site. The grading plan requirements emphasize vertical separation and minimum subgrade soil type requirements. The operating C&D area meets or exceeds the 4-foot minimum vertical separation requirement to groundwater and bedrock, and the recertification of the area used for LCID will provide confirmation that the 4-foot separation requirement is met. Confirmation will be provided via test pit investigation during construction. No liner or leachate collection system is required under these rules. Subgrade soil types identified in the 2009 Design Hydrogeologic Report exhibit predominately silt and sandy silt material with a ML classification and silty gravel with sand with a GM classification. The subgrade permeability is expected to be relatively low, providing the soils are reworked and compacted (see Section 3.3.2). 1.2 FACILITY DRAWINGS 1.2.1 Facility Layout A drawing set titled “Gold Hill Road Facility Plan,” dated February 2016, shows the entire facility layout, along with interim grades for various phases, and relevant final cover and S&EC details. The CDLF will continue to be developed in three ground disturbing phases, with a future fourth phase vertical expansion over the first three phases. Each phase is expected to provide approximately 5 years of operational capacity, based on current waste stream projections. Drawings E1 through E5 have been updated to depict current conditions and final grades for Phases 1 and 2. The aerial limits are set to provide a minimum 200-foot buffer to the facility boundary, and a 50-foot buffer to jurisdictional water bodies, per the rules that were in effect when the project was initiated. Drawings E2 – E5 show the footprints and estimated interim fill grades for Phases 1A, 1B and 1C, respectively. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 2 C&D recycling activities will continue to take place within the approved CDLF footprint and adjacent to the footprint. These activities may be moved around as needed to remain close to the working face. No part of the CDLF footprint contains identified floodplains or jurisdictional wetlands (adjacent areas with these features will be avoided), unstable areas or cultural resources that affect project development. 1.2.2 Operational Sequence Phase 2 and associated S&EC measures have nearly reached capacity in the northern portion of the CDLF footprint. The operational sequence for Phase 2 was divided into two contiguous cells, or sub-phases (Phase 2A and 2B). Phase 2A is complete and Phase 2B is expected to last an estimated two-three years of duration. It should be noted that Phase 2B has been built and certified for operations. Phase 1 (the existing LCID area) will be cleared, recertified and utilized as a CDLF per the existing operations plan. Interim slopes will be maintained at 3H:1V, in accordance with Division requirements, while upper surfaces shall be graded to promote positive drainage, ideally at a 5% slope. Operational procedures are described more fully in Sections 5.0 – 7.0. Exterior slopes will be closed – with simultaneous construction of erosion control benches – in Phase 2 (and future phases) in increments as the slopes come to grade (refer to Section 8.0). 1.3 FACILITY REPORT 1.3.1 Waste Stream The following data is updated from the 2009 Application for Substantial Change, Facility Plan with data furnished to Randolph County. Supporting data, e.g., population and growth projection, are presented in Appendix 1. The geographic area to be served by the franchisee may include the following counties: Randolph, Guilford, Alamance, Chatham, Moore, Montgomery, and Davidson. The annual waste intake is anticipated to vary from 15,000 to 20,000 tons per year – a daily intake up to 70 tons per day. The facility will accept C&D and LCID waste. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 3 1.3.2 Landfill Capacity A volumetric analysis for the CDLF, performed using the end-area projection method and based on contour areas derived from the AutoCAD drawings, is discussed below. Calculations in the 2009 permitting showed a total volumetric capacity of 1,114,400 cubic yards. Solid Waste rules allow an increase up to 110% of the permitted airspace without a substantial amendment. This would allow a volume of 1,225,840 cubic yards within a permit renewal application. The assumed unit weight is 0.56 ton/cubic yard. An apparent annual consumption rate of 21,804 cy per year (12,210 tons per year) was calculated based on as-built surveys and original base grades. The 2009 work anticipated airspace consumption would be 35,000 cy per year, increasing over time to 50,000 cy per year. Based on the history, the remaining airspace in Phase 2 has been recalculated using 21,804 cy per year. Airspace consumption in Phases 1A has been calculated based on the original 35,000 cy per year, and for Phases 1B and 1C the annual airspace consumption was calculated based on 45,000 cy per year. The waste intake has varied significantly in recent years due to economic trends, and fluctuations are expected to continue. Estimates of remaining volumetric capacity and operational life are shown in the following tables. CAPACITY PROJECTIONS Gold Hill Road Landfill (Permit #76-06) Solid Waste Units Present C&D Recycling Facility, CDLF Other Activities/Infrastructure Scales/Office, LCID Mining, LCID Processing Facility Boundary Acreage ....................................................................................... 67.04 acres Permitted Side Slope Ratios ..................................................................................... 3H:1V Completed Remaining CDLF Phases/Sub-Phases 1 2A 2B New Ground Footprint Acreage 1 6.34 ac 1.99 ac Interim Capacities (Sub-Phases) 2, 8 305,253 cy 60,926 cy Interim Elevations (Sub-Phases) EL. 782 EL. 782 Constructed Footprint Acreage ................................................................................ 8.33 ac 4 Volumetric Capacity (all Phase 2) 2 ......................................................................... 366,179 cy Final Cover Volume (3-ft thickness) 9 ...................................................................... 40,317 cy Net Disposal Airspace (all Phase 2) ......................................................................... 325,861 cy Remaining Life Expectancy ..................................................................................... 2.8 years 7 Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 4 FUTURE CONDITIONS New contiguous footprint under current PTC: New CDLF Phases/Sub-Phases 1A-1 1 1A-2 1 New Ground Footprint Acreage, ac 4.70 3 2.35 Interim Capacities (Sub-Phases) 2, cy 128,965 177,918 Interim Elevations (Sub-Phases) EL. 792 EL. 792 Added Footprint (these phases) ............................................................................... 7.05 acres Volumetric Capacity (these phases) ........................................................................ 306,883 cy Final Cover Volume (these phases) 9 ........................................................................ 74,440 cy Net Disposal Airspace (these phases) ....................................................................... 232,443 cy Operational Life Expectancy (these phases) ............................................................ 6.6 years 6 Cumulative CDLF Footprint .................................................................................... 15.38 acres Cumulative CDLF Volume 2 .................................................................................... 673,062 cy FUTURE CONDITIONS New contiguous footprint under current PTC: New CDLF Phases/Sub-Phases 1B 1C New Ground Footprint Acreage, ac 5.12 3 0 5 Interim Capacities (Sub-Phases) 2, cy 411,179 141,599 Interim Elevations (Sub-Phases) EL. 798 EL. 798 Added Footprint (these phases) ............................................................................... 5.12 acres Volumetric Capacity (these phases) ........................................................................ 552,778 cy Final Cover Volume (these phases) 9 ........................................................................ 24,781 cy Net Disposal Airspace (these phases) ....................................................................... 527,997 cy Operational Life Expectancy (these phases) ............................................................ 11.7 years 6 Cumulative CDLF Footprint .................................................................................... 20.5 acres Cumulative CDLF Volume 2 .................................................................................... 1,225,840 cy Cumulative Net Disposal Volume 8 .......................................................................... 1,086,302 cy Estimated Tonnage at Completion ........................................................................... 608,329 tons Maximum Waste Thickness ..................................................................................... 48 feet 1 Corresponding to 5-year Operating Capacity 2 Includes Final Cap System and Operational Cover 3 Covered by current this Permit to Construct application 4 Permitted acreage stated as 9.0 acres in post-2009 permit correspondence, 8.33 acres measured from site plan 5 Vertical Expansion – not actual ground disturbance (does not add to total footprint area) 6 Per February 2009 PTC – assumed airspace consumption was 35,000 cy per year, 45,000 after 10 years 7 Based on a remaining airspace and 21,804 cy of annual airspace consumption 8 Subtract final cover volume from previous phases for net airspace 9 Calculated for financial assurance purposes Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 5 1.3.3 Special Engineering Features Underdrain - A former drainage feature between Phases 1 and 2 has been diverted around the south side of Phase 2. The former drainage feature occupies most of the future Phase 1A area, which has been built to the approved design grades (subject to verification). An evaluation of the subgrade will be performed during the upcoming recertification, to identify any soft spots or wet features. At this time, no special attention is expected to be required. If the future subgrade evaluation indicates the need, plans for any remedial measures, e.g., underdrains or undercut and replacement, will be submitted to NC DEQ prior to implementation. 1.3.4 Soil Volume Analysis The following soil data was developed using the airspace calculations (discussed above) and the permitted grading plan (relative to regulatory vertical buffer requirements). A majority of the proposed base grading has been completed. Nominal fill may be required. The following analysis assumes that approximately 6 acres has been closed in Phase 2, leaving approximately 2 acres currently open. Assume 20% shrinkage on final cap. Total Permitted Footprint 20.5 acres Final Cover Required Phase 2B (3' x 2.33 ac x 1613 cy/ac/ft x 1.2) 13,530 cy Intermediate Cover (5% Volume)* 3,046 cy Final Cover Required Phase 1A (3' x 7.05 ac x 1613 cy/ac/ft x 1.2) 40,938 cy Intermediate Cover (5% Volume) 15,344 cy Final Cover Required Phase 1B, and 1C (3' x 5.12 ac x 1613 cy/ac/ft x 1.2) 29,731 cy Intermediate Cover (5% Volume) 27,639 cy Total Required Soil 130,228 cy *Based on remaining airspace in Phase 2 Likely Phase 1 contains an unquantified volume of soil which can be recovered An estimated 300,000 cubic yards of soil is available on one or more adjacent sites Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 6 2.0 ENGINEERING PLAN 2.1 ENGINEERING REPORT This section of the report describes the physical aspects of the facility design, per rule 15A NCAC 13B .0539, with emphasis on waste containment and environmental control systems, based on the hydrogeologic data discussed in 2009 Design Hydrogeologic report. The design was prepared by a qualified Professional Engineer, who is licensed to practice in North Carolina and is familiar with the requirements of the North Carolina Division of Waste Management (Division) rules. Phase 2B is set to provide approximately 2.8 years of capacity, in keeping with rules. Also, in keeping with the intent of 15A NCAC 13B .0531 - .0547, there is no liner or leachate collection system proposed for this facility since the site meets the rule requirements for soil types present within two feet below planned base grades, and there is at least 4 feet of vertical separation between the waste and seasonal high ground water and/or bedrock (Rule .0540 (2)). Outer slopes will have maximum slope ratios of 3H:1V, which have been demonstrated to be stable. 2.1.1 Analytical Methods The facility design incorporates elements that are consistent with Division rules and guidelines, as well as sound engineering practice. Various analyses used in the design of the facility include evaluations of soil conditions, i.e., the consistency of subgrade soils and the availability of suitable soils for constructing stable embankments and other earthen structures (discussed below), and ground water characteristics, i.e., flow directions and seasonal water depth fluctuations. Soil properties testing used to facilitate these evaluations included grain size analysis, shear strength, consolidation, and compaction characteristics (see 2001 Site Suitability study). Stability and settlement of foundation soils were considered in setting base grades, as was outer slope stability for the final cover system (see Appendix 2). Other analyses included a detailed evaluation of S&EC and storm water management systems, previously approved by NC DENR Division of Land Resources, Land Quality Section, which were presented in the 2002 Permit to Construct application – relevant calculations are presented in Appendix 3. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 7 2.1.2 Identified Critical Conditions No inherent foundation stability or long-term settlement problems are anticipated. Some considerations that are both generic to landfills and specific to the on-site soils, learned through practical experience with the construction of other landfills in the region, are discussed below.  Subsurface conditions consist of metavolcanic schist and gneiss, which can vary in density within short lateral and horizontal distances and which exhibits a differential weathering pattern. Conditions that produce “auger refusal” can be localized and may not be apparent during open excavations. The grading plan is based on auger refusal and may not reflect the actual excavation characteristics.  Ground water is typically deeper than bedrock within the eastern portions of the site, shallower than bedrock within the western portion of the site – that is, groundwater depths govern the vertical separation requirements for the base grading plan within the western half of the site (approximately), bedrock elevations govern within the eastern portion of the site.  Minor occurrences of rock-like materials may be encountered above the permitted grades, which may require ripping for removal.  Required soil types for the upper two (2) feet of base grades include SM, SC, ML, MH, CL, and CH classifications. Based on first-hand observation and the earlier geotechnical study, the required soil types are expected to be present at (and below) the permitted final grades. These soils are abundant on the site.  Soils for final cover construction, i.e. capable of being compacted to permeability no greater than 1 x 10-5 cm/sec, are available in sufficient quantities, but the operator will need to segregate and reserve these soils.  Soil compaction is dependent on both compaction effort (i.e., the right equipment) and working within the correct range of near-optimum moisture.  Properly compacted embankments are expected to be stable due to high soil strength and stable foundation conditions. Outer slope stability (relative to final cover) will also rely on adequate compaction and observation of proper slope ratios, due to the strength considerations. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 8  Another consideration is potential soil erosion susceptibility, which can be counteracted with good cover construction practices and vegetative cover. The on-site soils have moderate field capacity and poor nutrient value, which may require additional effort to establish vegetation. These conditions pose operational considerations but require no special design accommodations. 2.1.3 Technical References Calculations found in Appendix 3 are referenced within each analysis. All engineering calculations were performed in accordance with accepted standards of practice. 2.1.4 Location Restrictions The site was granted a Site Suitability determination in accordance with 15A NCAC 13B .0531 et seq. based on work completed in 2001, i.e., the site characteristics were determined suitable for a C&D landfill. Relative to Rule .0536 pertaining to C&D landfills, the site has no disqualifying conditions with respect to zoning, setbacks from residences or potable wells, historic or cultural sites, state or nature preserves, 100-year floodplains, wetlands, water supply critical areas, or endangered species. Documentation pertaining to these site selection criteria is found in the 2001 Site Suitability Report. 2.2 CONSTRUCTION MATERIALS AND PRACTICES Based on the 2009 Design Hydrogeologic investigation, on-site soils available for embankment and subgrade recertification consist chiefly of variably silty sand exhibiting Unified Soil Classification System classifications of mostly clayey silt (ML) with silty gravel (GM). First hand observation indicates the presence of silty sand SM and silty clay CL soils. These soils meet the requirements for the upper two feet beneath the landfill subgrade referenced in 15A NCAC 13B .0540 (2). The soils exhibit adequate compaction characteristics and shear strength (when properly compacted) to build stable embankments and subgrade that will not undergo excessive settlement. Some selective use of soils and/or field evaluation will be required to place the correct soil types within the upper two (2) feet beneath the subgrade elevations. Good construction practices for embankments and subgrade include compaction using steel- wheel rollers, sheep foot rollers, and/or smooth-drum rollers of sufficient weight – not dozers – making a minimum numbers of passes (typically three to five passes) in two perpendicular directions in order to achieve the desired strength properties for stability. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 9 Past experience at the site indicates that proper material selection and/or blending soils to negate the effects of wet or slick soils will produce satisfactory results. The targeted compaction criterion is 95% of standard Proctor maximum dry density (ASTM D-698). Critical embankment and subgrade areas should be tested to ensure proper compaction in accordance with the criteria outlined in the CQA Plan. 2.3 DESIGN HYDROGEOLOGIC REPORT The Design Hydrogeologic Investigation Report prepared in February 2008 and revised in March 2009 by Cohesion, Inc. was approved by the Division in 2009. Excerpts of this report are reproduced in Appendix 2. No further hydrogeologic study is needed. 2.4 ENGINEERING DRAWINGS Refer to the rolled plan set that accompanies this report. All relevant criteria required by the rules (except as noted) are depicted on the plans. 2.4.1 Existing Conditions See Drawing E1 in the Facility Plan Drawings. 2.4.2 Grading Plan/Sequence Plan See Drawings E2-E5. 2.4.3 Stormwater Segregation See Drawing SC1. Good practices for water management include maintaining slopes with positive drainage and orderly waste placement, which is required to minimize contact with runoff, hence minimization of leachate. 2.4.4 Final Cap System See Drawing E5 for final contours and placement of drainage measures, and Drawing SC1 for final cover details. 2.4.5 Temporary and Permanent S&EC See Drawing SC1 for temporary sedimentation and erosion control (S&EC) measures and permanent measures. An S&EC plan was submitted to the NC DENR Division of Land Resources, pursuant to the 2009 Construction permit. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 10 2.4.6 Vertical Separation Vertical separation was established for base grades in the 2009 Design Hydrogeologic report. Separation to groundwater and bedrock are depicted on Drawings D5 and D8 in the 2009 design Hydro report (Appendix 2), which present cross sections based on the original permitting work. 2.4.7 Other Features This rule pertains to liners and leachate collection systems, if proposed (none are). 2.5 ENGINEERING CALCULATIONS Calculations for settlement and slope stability were performed using site specific data. The calculations can be found in Appendix 3, along with key supporting geotechnical lab data. More complete lab data are found in the 2001 Site Suitability Report and/or the 2009 Design Hydrogeologic Report. The following is brief description of the analyses. 2.5.1 Settlement Settlement is a concern at landfills for maintaining vertical separation between the bottom of the waste (or base liner) and the maximum long-term seasonal high water table. Settlements of the foundation soils result from time-dependent strain, i.e., a change in thickness within the various soil layers due to the vertical stress (weight of the landfill) applied at the surface, accompanied by drainage of the various soil layers. Vertical stresses beneath landfills gradually increase as the waste becomes thicker over long periods of time; strain-induced settlements within sands and/or well drained silts and clays are relatively short-term, thus long-term settlements are not typically a concern unless thick uniform clay deposits are present (which tend to drain slowly) – such is not the case at the subject landfill. This landfill site is excavated into residual saprolite, derived from the underlying bedrock, thus settlement is not expected to be a concern. Nonetheless, settlements were calculated using elastic methods adapted from the US Federal Highway Administration (FHWA) for highway embankments. Ostensibly, a landfill is a large flexible embankment with the highest stresses impinging on the foundation soils near the center. The FHWA settlement calculation is based on the work of Hough (1959) and others, which considers both the material type and overburden depth for determining a “correction factor” for standard penetration test (SPT) values, from which the compressibility and load-induced strain of each soil layer can be Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 11 evaluated. For sandy soils conventional sampling via Shelby tubes and laboratory consolidation testing is infeasible. No Shelby tube samples were acquired for laboratory consolidation tests, because the soils were too sandy and dense. A spreadsheet facilitates the settlement calculation (see Appendix 3). The maximum vertical stress increase calculated using the maximum embankment height of 110 feet and an average unit weight of 1000 pounds per cubic yard (37 pcf), then applying a depth- related “influence factor” based on elastic stress distribution theory. Next a subsurface stress distribution was developed for original and post-construction (final height) conditions, based on the depth and average unit weight of the soil layers, plus the added vertical stresses. The SPT correction factor was applied to determine the compressibility factor and strain within each layer, differentiating between sand and clay layers based on empirical data. Strain in the individual layers was summed up to estimate the total settlement. Time-dependent settlement was not considered due to the well-drained conditions indicated by the subsurface data. Assuming fairly uniform subsurface conditions within the footprint – as confirmed by the test borings – a representative subsurface profile was used to estimate the maximum settlements beneath the center of the landfill. Settlements along the edges of the landfill are negligible, and settlements beneath the slopes would fall in between the maximum and minimum values. The calculations confirm that the base grade design, which typically provides more than the minimum required 4 feet of separation, is sufficient to accommodate the anticipated settlement. Differential settlement within the footprint is not a concern. The maximum estimated foundation settlement is 0.4 feet, or less. 2.5.2 Slope Stability Two primary concerns exist for landfills with respect to slope stability: deep-seated or global stability involving a deep layer in the foundation or along the base of the landfill, which could potentially result in catastrophic slope failure, and veneer stability (sliding of the cover), which can expose the waste but is typically more of a maintenance issue relative to repairs in the event of a failure (veneer stability can also be catastrophic). Subsurface conditions identified at this site are relatively sandy (high strength soils) with interspersed thin clay layers with sand seams that are expected to drain readily under the applied embankment loads – only “effective” stresses (i.e., drained conditions) were considered. The site is not earthquake prone, so liquefaction is not a concern. No extremely soft layers that would pose stability concerns were identified by the SPT testing, but the foundation is expected to undergo a strain-hardening strength increase as settlement occurs, i.e., the foundation soils will become even more stable with time. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 12 2.5.2.1 Deep-seated stability – Limit-equilibrium methods, i.e., the STABL-5M model used for this project, evaluate the balance of forces driving a slide (weight of the porous material and contained water) against the forces resisting a slide (shear strength, expressed as cohesion and friction) along a theoretical failure surface, which can be either a circular surface or a series of intersecting planar surfaces. A “static” analysis considers just the weight of the materials and the shear strength (tie- back loads may be considered for reinforced embankments); a “dynamic” analysis might consider external loads, such as linear loads at the top of the embankment (i.e., traffic forces) or additional horizontal loads to represent earthquakes (expressed as a fraction of the normal gravity field, specific to the region of interest). The balance of forces – the sum of the resisting forces divided by the sum of the driving forces – is expressed as a ratio, e.g., 1.5:1, or simply 1.5, which is called the “safety factor.” Ratios less than unity (safety factor <1) indicate unstable conditions. Typical minimum safety factors for maintaining stable embankment conditions throughout the life of a project are 1.5 for static conditions, 1.0 for seismic conditions. Shear strength inputs to the STABL-5M model were developed from the drilling and laboratory data (see the 2009 Design Hydrogeologic Report). A circular failure surface and a block analysis were analyzed with the Janbu method of slices. A representative soil profile was developed from the drilling data. A side slope ratio of 3H:1V was modeled. Shear strength parameters were derived empirically from the standard penetration resistance values, based on familiarity with local soils and engineering experience. Typically, the in-situ soil exhibits a high shear strength value, expressed in engineering terms as the cohesion (in units of force/area) and the internal friction angle (expressed in degrees). The following table summarizes the soil strength input values. Soil Layer Layer Thickness (feet) Soil Layer Description Saturated Unit Weight (pcf) Drained Cohesion (psf)* Drained Friction Angle (deg) 1 110 Waste 64 100 25 2 10 Silty sand N = 17 110 100 35 Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 13 3 25 Silt-Clay N = 20-50 135 300 34 4 40 Silty sand N = 100 130 40 35 5 40 Bedrock 145 5000 45 *Apparent cohesion for silty sands and waste is based on retrogression analysis from other projects (past experience). The water table was modeled at a depth of 5 feet below ground surface, i.e., the base of the waste, which reflects seasonal high conditions. Based on the analysis presented in Appendix 3, the minimum safety factors calculated for this project are summarized below: Failure Analysis Seismic* Non-Seismic Block 1.49>1.0 1.77>1.5 Circular 1.47>1.0 1.71>1.5 *A horizontal static load of 0.04g was applied to represent regional seismicity, consistent with the protocols of the STABL5M computer program – the region is not within a seismic impact zone as defined by NC DENR Solid Waste Rules 2.5.2.2 Veneer Stability – Sliding of the final cover (or veneer failure) is dependent on slope angle, material strength, i.e., the interface friction angle and cohesion within the soils and between the soils and synthetic components (if any), and the degree of saturation. Veneer failure occurs when the pore pressures build up along a critical interface in excess of available shear strength. The severity of failure can range from minor sloughing of small areas (maintenance nuisances) to large-scale slides requiring complete replacement of large sections – this type of failure is expensive to repair, especially when synthetic components are involved. The analysis is typically performed for preliminary design conditions to anticipate (and try to avoid) the large-scale failures. The regulatory minimum cover includes 18 inches of vegetative support soil overlying a compacted soil barrier. Given the regional soil types, the upper 18 inches could include a high permeability sand layer near the base, and ample soil resources are available for the compacted soil barrier (maximum 1 x 10-5 cm/sec permeability). North Carolina Solid Waste regulations allow alternative final covers, subject to approval by the Solid Waste Section, but specific interface testing will be required to verify future designs. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 14 Even when native soil covers are used, drainage is still important relative to veneer stability, so a final cover section should include higher permeability sand layer next to the barrier to prevent the soils above the barrier from becoming saturated. Assuming a regulatory minimum cover soil profile is used, the critical interface for veneer stability exists within a low-cohesion sand layer overlying the compacted soil barrier at full saturation on a 3H:1V slope (i.e., the angle measured from the horizontal is 18 degrees). While a minimum cohesion could be assumed along the sand layer and the compacted soil barrier, the stresses near the base of the sand layer would control stability. A veneer stability analysis (Appendix 3) adapted from Matasovic (1991)1 was performed to evaluate four conditions: static unsaturated and saturated conditions (with a required safety factor of 1.5) and seismic unsaturated and saturated conditions (with a safety factor of 1.1). For this site, the static (non-seismic) saturated case is the critical condition for design because of the higher required safety factor. The calculations start with the given slope geometry and saturation state, then for a given safety factor the required friction (with or without cohesion) is back-calculated to provide the desired safety factor. The analysis assumed full saturation of the vegetation support layer (upper cover soil is at field capacity) with a 1-year, 60-minute design storm impinging, resulting in a head of just over 12 inches acting on the base of the upper soil layer. Assuming the deeper compacted soil layer is stronger (due to cohesion) a minimum friction angle of 31 degrees is required within the upper soil layer. Select soils are available in the region (including the borrow sites on the premises) capable of providing this minimum friction angle, combined with the required high permeability for drainage. The CQA program for the final closure should verify the available friction angles for the actual cover components (including alternative cover designs, if these are to be used). 2.5.3 Final Slope Ratios Both the deep-seated stability analysis (Section 2.5.2.1) and the veneer stability analysis (Section 2.5.2.2) assumed a 3H:1V slope ratio. These analyses demonstrate that stability safety factors meet the minimum acceptable requirement of 1.5 for static (non-seismic) conditions. The use of 3H:1V slope ratios will result in stable slopes, providing that the drainage requirements are accommodated, and assuming proper vegetation maintenance. 1 Geotechnical and Stability Analyses for Ohio Waste Containment Facilities, Geotechnical Resource Group, Ohio Environmental Protection Agency, Columbus, Ohio, September 2004, pg. 9-12. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 15 3.0 CONSTRUCTION PLAN This section demonstrates compliance of the facility design with the requirements of the C&D Rules, 15A NCAC 13B .0537 - .0540. Reference is made to the construction plan set and various appendices. 3.1 HORIZONTAL SEPARATION The following regulatory criteria are addressed in project drawings specified below. Refer to the rolled plan set that accompanies this report. 3.1.1 Property Lines The minimum setback to property lines is 200 feet (Drawings E1 – E5). 3.1.2 Residences and Wells The minimum setback to residences and wells is 500 feet (Drawings E1 – E5). 3.1.3 Surface Waters The minimum setback to surface waters is 50 feet (Drawings E1 – E5). 3.1.4 Existing Landfill Units There are no other landfill units present on the site. 3.2 VERTICAL SEPARATION 3.2.1 Settlement Maximum waste thicknesses are approximately 60 feet; the waste density is approximately 0.56 tons/cubic yard. Foundation soils are very dense residual silty sand and gravelly sand and silt (all saprolite). Settlement calculations (see Appendix 2) indicate maximum post-construction settlements on the order of 0.4 feet (3 inches), or less. Discussion of the assumptions and procedures behind the calculations is presented in Section 2.5. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 16 3.2.2 Soil Consistency Based on the laboratory data summary table (see Appendix 2), a majority of the on-site soils generally classify as silty sands (SM), silt (ML) or dual classify as sand-silt (SM- ML). A relatively small fraction of the near surface soils consist of low plasticity silty clay (CL), and there are minor high plasticity silty clay (MH-CH) soil types present. Based on the data, these soil types are prevalent and will be present – either in-situ or within compacted subgrade – to meet the requirements of Rule .0540 (2) (b) for the upper two feet beneath the subgrade. No modification of the soils, i.e., admixtures, will be required to meet this rule requirement, but reworking to blend the soils to a more uniform consistency and proper compaction moisture may be required. The soil types in the subgrade shall be documented in the CQA program. 3.3 SURVEY CONTROL BENCHMARKS A permanent benchmark is located along Gold Hill Road (see facility drawings), with the following information: NAD 83 Coordinates N 817,233.63456 E 1,749,238.54876 NGVD 29 El. 783.30 3.4 SITE LOCATION COORDINATES The latitude and longitude coordinates of the center of the site are approximately: LATTITUDE 35.71778 N LONGITUDE -79.48895 E Reference: http://earthexplorer.usgs.gov/ 3.5 LANDFILL SUBGRADE 3.5.1 Subgrade Inspection Requirement The Owner/Operator shall have the subgrade inspected by a qualified engineer or geologist upon completion of the excavation, in accordance with Rule .0534 (b) and Rule .0539. Said inspection is required by the Division to verify that subgrade conditions are consistent with expected conditions based on the Design Hydrogeologic Report. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 17 3.5.2 Division Notification The Owner/Operator shall notify the Division at least 24 hours in advance of the subgrade inspection. 3.5.3 Vertical Separation Compliance The subgrade inspection shall verify to the Division that the minimum vertical separation requirements are met and that required subgrade soil types are present. 3.6 SPECIAL ENGINEERING FEATURES This section of the rules generally pertains to liners and leachate collection systems, if any are present (none will be). A ground water and surface water diversion installed ca. 2009 may require modification or removal to accommodate future construction. 3.7 SEDIMENTATION AND EROSION CONTROL The sedimentation and erosion control structures were permitted by the NC DENR Division of Land Resources, Land Quality Section and have been designed to accommodate the 25-year, 24-hour storm event, per the North Carolina Sedimentation Pollution Control Law (15A NCAC 04). Required measures are depicted in the Facility plan set (see Drawing SC1). Existing sediment traps shall be cleaned out and upgraded as needed; other measures shall be maintained throughout the life of the facility. Basin function will be evaluated and modifications made as needed. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 18 4.0 FINANCIAL ASSURANCE 15A NCAC 13B .0546 requires that Owners/Operators demonstrate financial assurance for closure and post-closure activities. Typically, for local government-owned facilities, said demonstration is based on a local government test. For private facilities, the posting of a performance bond or insurance policy is typically acceptable to the Division. Cost estimates for closure and post-closure of CDLF Phases 1A and 2 are presented in Appendix 6. The following is a detailed analysis of the closure and post closure costs, based on the preceding, all in 2016 dollars, projected over the anticipated life of the landfill and 30 years of post-closure care. The Financial Assurance obligation should be recalculated for future years to account for inflation using annual multipliers furnished by NCDEQ. It should be realized that the bond requirement is for the whole landfill that has a Permit to Operate – the liabilities both increase and decrease with time as phases are opened and others are closed. Thus, the amount of the post-closure instrument should be adjusted on an annual basis, consistent with Division policy. Acceptable financial assurance instruments include performance bonds, insurance policies, cash deposits and irrevocable letters of credit. The following costs pertain to Phase 1A and Phase 2, only, and assumes a maximum open acreage of 6.1 acres. SUMMARY OF CLOSURE AND POST-CLOSURE COST (2016 dollars) 1. Final Closure Construction (see Table A in Appendix 6) $ 317,680 2. Projected Post-Closure Costs (see Table C in Appendix 6)* $ 624,960 TOTAL CLOSURE/POST-CLOSURE COST $ 942,640 3. Potential Assessment Corrective Action (PACA)** $1,000,000 TOTAL REQUIRED FINANCIAL ASSURANCE $1,942,640 Per Division rules, Owners/Operators must furnish an acceptable financial assurance instrument (e.g., performance bond, irrevocable letter of credit, insurance policy, other fiduciary instrument) within 30 days of notification of approval. *Assumes 30 years *Statutory changes enacted ca. 2008 and revised ca. 2010 require a separate bond for Potential Assessment and Corrective Action, also referred to as PACA. The minimum bond amount is currently $1M. Morton and Sewell Land Company, LLC (Permit 76-06) Facility Plan Update 19 5.0 CERTIFICATION This engineering plan for the Gold Hill Road C&D Landfill Phases 1 and 2 disposal unit has been prepared by, or under the responsible charge of, a North Carolina Licensed Professional Engineer to meet the requirements of 15A NCAC 13B .0539. The individual signature and seal below attests to compliance with this rule requirement. Signed ___________________________ Printed _G. David Garrett____________ Date __January 29, 2016____________ Not valid unless this document bears the seal of the above-named licensed professional. Appendix 1 Facility Plan Drawings Appendix 2 2009 Design Hydrogeologic Report Appendix 3 Engineering Calculations CUT & FILL VOLUMES BY AVERAGE AREA METHOD Page 1/4 BASED ON DEPTH CONTOURS (ISOPACHS) Contour interval (feet) = 2 10 PHASE 2 FILL VOLUME - BASE TO EXISTING Cut Contour Contour Increment Accum. Accum. Depth Area, sf Area, ac. Vol., cf Vol., cf Vol., cy 728 28,907.7 0.66 104,262.4 104,262.4 3,861.6 730 75,354.7 1.73 198,708.2 302,970.6 11,221.1 732 123,353.5 2.83 271,942.7 574,913.3 21,293.1 734 148,589.2 3.41 312,127.6 887,040.9 32,853.4 736 163,538.4 3.75 342,340.1 1,229,381.0 45,532.6 738 178,801.7 4.10 390,624.8 1,620,005.8 60,000.2 740 211,823.1 4.86 438,149.4 2,058,155.2 76,228.0 742 226,326.3 5.20 465,233.7 2,523,388.9 93,458.8 744 238,907.4 5.48 486,536.0 3,009,924.9 111,478.7 746 247,628.6 5.68 498,340.6 3,508,265.5 129,935.8 748 250,712.0 5.76 496,621.9 4,004,887.4 148,329.2 750 245,909.9 5.65 482,338.5 4,487,225.9 166,193.6 752 236,428.6 5.43 458,664.5 4,945,890.4 183,181.1 754 222,235.9 5.10 430,429.9 5,376,320.3 199,123.0 756 208,194.0 4.78 402,536.9 5,778,857.2 214,031.7 758 194,342.9 4.46 375,315.4 6,154,172.6 227,932.3 760 180,972.5 4.15 346,072.4 6,500,245.0 240,749.8 762 165,099.9 3.79 315,134.7 6,815,379.7 252,421.5 764 150,034.8 3.44 285,329.3 7,100,709.0 262,989.2 766 135,294.5 3.11 256,187.9 7,356,896.9 272,477.7 768 120,893.4 2.78 227,326.2 7,584,223.1 280,897.2 770 106,432.8 2.44 199,127.1 7,783,350.2 288,272.2 772 92,694.3 2.13 171,591.3 7,954,941.5 294,627.5 774 78,897.0 1.81 132,634.0 8,087,575.5 299,539.8 776 66005.7 1.23 95,563.9 8,183,139.4 303,079.2 778 53,737.0 0.96 50,255.6 8,233,395.0 304,940.6 780 41,826.9 0.19 8,428.7 8,241,823.7 305,252.7 In Place 782 8,428.7 0.00 0.0 8,241,823.7 305,252.7 784 0.0 0.00 0.0 8,241,823.7 305,252.7 PHASE 2 FILL VOLUME - EXISTING TO INTERIM FINAL 746 530.8 0.01 4,164.6 4,164.6 154.2 748 3,633.8 0.08 12,987.7 17,152.3 635.3 750 9,353.9 0.21 27,853.8 45,006.1 1,666.9 752 18,499.9 0.42 48,124.1 93,130.2 3,449.3 754 29,624.2 0.68 69,735.1 162,865.3 6,032.0 756 40,110.9 0.92 90,609.4 253,474.7 9,388.0 758 50,498.5 1.16 111,236.0 364,710.7 13,507.8 760 60,737.5 1.39 128,210.0 492,920.7 18,256.3 762 67,472.5 1.55 139,387.7 632,308.4 23,418.8 764 71,915.2 1.65 145,939.1 778,247.5 28,824.0 766 74,023.9 1.70 147,182.7 925,430.2 34,275.2 768 73,158.8 1.68 144,299.9 1,069,730.1 39,619.6 770 71,141.1 1.63 139,722.8 1,209,452.9 44,794.6 772 68,581.7 1.57 129,412.7 1,338,865.6 49,587.6 774 65190.0 1.40 116,118.4 1,454,984.0 53,888.3 776 60,831.0 1.27 104,004.2 1,558,988.2 57,740.3 778 55,287.4 1.12 66,389.5 1,625,377.7 60,199.2 780 48,716.8 0.41 18,648.8 1,644,026.5 60,889.9 782 17,672.7 0.41 976.1 1,645,002.6 60,926.0 Remaining 784 976.1 0.02 0.0 1,645,002.6 60,926.0 786 0.0 0.00 0.0 1,645,002.6 60,926.0 SCS Engineers, PC 3-8-2016 Gold Hill Road CDLF Phases 1-2 PHASE 1A1 FILL VOLUME - BASE TO INTERIM FINAL Page 2/4 Cut Contour Contour Increment Accum. Accum. Depth Area, sf Area, ac. Vol., cf Vol., cf Vol., cy 746 7,134.5 0.16 25,266.7 25,266.7 935.8 748 18,132.2 0.42 49,447.8 74,714.5 2,767.2 750 31,315.6 0.72 83,497.4 158,211.9 5,859.7 752 52,181.8 1.20 128,712.5 286,924.4 10,626.8 754 76,530.7 1.76 174,731.1 461,655.5 17,098.4 756 98,200.4 2.25 216,125.0 677,780.5 25,103.0 758 117,924.6 2.71 247,985.0 925,765.5 34,287.6 760 130,060.4 2.99 264,951.5 1,190,717.0 44,100.6 762 134,891.1 3.10 274,348.2 1,465,065.2 54,261.7 764 139,457.1 3.20 281,087.6 1,746,152.8 64,672.3 766 141,630.5 3.25 281,573.0 2,027,725.8 75,101.0 768 139,942.5 3.21 278,091.4 2,305,817.2 85,400.6 770 138,148.9 3.17 267,230.6 2,573,047.8 95,298.1 772 129,081.7 2.96 249,037.2 2,822,085.0 104,521.7 774 119,955.5 2.75 230,849.2 3,052,934.2 113,071.6 776 110,893.7 2.55 158,154.2 3,211,088.4 118,929.2 778 101,399.2 2.33 117,301.2 3,328,389.6 123,273.7 780 90,503.5 2.08 90,503.5 3,418,893.1 126,625.7 782 47,260.5 1.08 47,260.5 3,466,153.6 128,376.1 784 15,902.0 0.37 15,902.0 3,482,055.6 128,965.0 Subtract PHASE 1A FILL VOLUME - BASE TO INTERIM FINAL Cut Contour Contour Increment Accum. Accum. Depth Area, sf Area, ac. Vol., cf Vol., cf Vol., cy 730 4,631.7 0.11 15,409.4 15,409.4 570.7 732 10,777.7 0.25 29,917.2 45,326.6 1,678.8 734 19,139.5 0.44 48,560.6 93,887.2 3,477.3 736 29,421.1 0.68 70,662.5 164,549.7 6,094.4 738 41,241.4 0.95 89,891.1 254,440.8 9,423.7 740 48,649.7 1.12 116,228.5 370,669.3 13,728.5 742 67,578.8 1.55 144,484.0 515,153.3 19,079.8 744 76,905.2 1.77 168,066.0 683,219.3 25,304.4 746 91,160.8 2.09 202,951.9 886,171.2 32,821.2 748 111,791.1 2.57 241,733.2 1,127,904.4 41,774.2 750 129,942.1 2.98 278,001.6 1,405,906.0 52,070.6 752 148,059.5 3.40 320,622.9 1,726,528.9 63,945.5 754 172,563.4 3.96 366,885.6 2,093,414.5 77,533.9 756 194,322.2 4.46 408,762.3 2,502,176.8 92,673.2 758 214,440.1 4.92 440,914.8 2,943,091.6 109,003.4 760 226,474.7 5.20 460,218.4 3,403,310.0 126,048.5 762 233,743.7 5.37 471,328.1 3,874,638.1 143,505.1 764 237,584.4 5.45 476,786.7 4,351,424.8 161,163.9 766 239,202.3 5.49 476,634.8 4,828,059.6 178,817.0 768 237,432.5 5.45 470,283.2 5,298,342.8 196,234.9 770 232,850.7 5.35 456,988.9 5,755,331.7 213,160.4 772 224,138.2 5.15 439,252.7 6,194,584.4 229,429.1 774 215,114.5 4.94 421,446.3 6,616,030.7 245,038.2 776 206,331.8 4.74 403,411.5 7,019,442.2 259,979.3 778 197,079.7 4.52 391,480.8 7,410,923.0 274,478.6 780 194,401.1 4.46 335,491.5 7,746,414.5 286,904.2 782 141,090.4 3.24 236,212.2 7,982,626.7 295,652.8 784 95,121.8 2.18 154,430.2 8,137,056.9 301,372.5 786 59,308.4 1.36 90,802.6 8,227,859.5 304,735.5 788 31,494.2 0.72 43,214.8 8,271,074.3 306,336.1 790 11,720.6 0.27 13,236.5 8,284,310.8 306,826.3 792 1,515.9 0.03 1,515.9 8,285,826.7 306,882.5 Available 794 0.0 0.00 0.0 8,285,826.7 306,882.5 796 0.0 0.00 0.0 8,285,826.7 306,882.5 798 0.0 0.00 0.0 8,285,826.7 306,882.5 800 0.0 0.00 0.0 8,285,826.7 306,882.5 SCS Engineers, PC 3-8-2016 Gold Hill Road CDLF Phases 1-2 PHASE 1B FILL VOLUME - BASE TO INTERIM FINAL Page 3/4 Cut Contour Contour Increment Accum. Accum. Depth Area, sf Area, ac. Vol., cf Vol., cf Vol., cy 738 5,285.8 0.12 25,320.7 25,320.7 937.8 740 20,034.9 0.46 56,761.2 82,081.9 3,040.1 742 36,726.3 0.84 88,553.9 170,635.8 6,319.8 744 51,827.6 1.19 122,086.4 292,722.2 10,841.6 746 70,258.8 1.61 169,941.4 462,663.6 17,135.7 748 99,682.6 2.29 239,627.1 702,290.7 26,010.8 750 139,944.5 3.21 317,559.4 1,019,850.1 37,772.2 752 177,614.9 4.08 394,591.8 1,414,441.9 52,386.7 754 216,976.9 4.98 461,959.0 1,876,400.9 69,496.3 756 244,982.1 5.62 510,303.0 2,386,703.9 88,396.4 758 265,320.9 6.09 548,076.1 2,934,780.0 108,695.6 760 282,755.2 6.49 582,153.0 3,516,933.0 130,256.8 762 299,397.8 6.87 616,598.9 4,133,531.9 153,093.8 764 317,201.1 7.28 634,630.6 4,768,162.5 176,598.6 766 317,429.5 7.29 634,535.4 5,402,697.9 200,099.9 768 317,105.9 7.28 633,390.2 6,036,088.1 223,558.8 770 316,284.3 7.26 627,901.7 6,663,989.8 246,814.4 772 311,617.4 7.15 618,387.7 7,282,377.5 269,717.7 774 306,770.3 7.04 608,604.8 7,890,982.3 292,258.6 776 301,834.5 6.93 598,691.1 8,489,673.4 314,432.3 778 296,856.6 6.81 588,693.5 9,078,366.9 336,235.8 780 291,836.9 6.70 530,348.7 9,608,715.6 355,878.4 782 238,511.8 5.48 430,179.1 10,038,894.7 371,810.9 784 191,667.3 4.40 341,860.8 10,380,755.5 384,472.4 786 150,193.5 3.45 263,356.8 10,644,112.3 394,226.4 788 113,163.3 2.60 193,726.2 10,837,838.5 401,401.4 790 80,562.9 1.85 132,932.7 10,970,771.2 406,324.9 792 52,369.8 1.20 81,014.0 11,051,785.2 409,325.4 794 28,644.2 0.66 39,291.0 11,091,076.2 410,780.6 796 10,646.8 0.24 10,703.0 11,101,779.2 411,177.0 798 56.2 0.00 56.2 11,101,835.4 411,179.1 Available 800 0.0 0.00 0.0 11,101,835.4 411,179.1 802 0.0 0.00 0.0 11,101,835.4 411,179.1 804 0.0 0.00 0.0 11,101,835.4 411,179.1 806 0.0 0.00 0.0 11,101,835.4 411,179.1 808 0.0 0.00 0.0 11,101,835.4 411,179.1 SCS Engineers, PC 3-8-2016 Gold Hill Road CDLF Phases 1-2 PHASE 1C FILL VOLUME - INTERIM FINAL TO FINAL Page 4/4 Cut Contour Contour Increment Accum. Accum. Depth Area, sf Area, ac. Vol., cf Vol., cf Vol., cy 780 311,237.6 7.15 690,839.8 690,839.8 25,586.7 782 379,602.2 8.71 666,391.3 1,357,231.1 50,267.8 784 286,789.1 6.58 496,291.0 1,853,522.1 68,649.0 786 209,501.9 4.81 354,159.4 2,207,681.5 81,766.0 788 144,657.5 3.32 236,941.0 2,444,622.5 90,541.6 790 92,283.5 2.12 146,169.2 2,590,791.7 95,955.2 792 53,885.7 1.24 82,529.9 2,673,321.6 99,011.9 794 28,644.2 0.66 39,291.0 2,712,612.6 100,467.1 796 10,646.8 0.24 10,703.0 2,723,315.6 100,863.5 798 56.2 0.00 412,475.2 3,135,790.8 116,140.4 Subtract 780 412,419.0 9.47 807,299.3 3,943,090.1 146,040.4 782 394,880.3 9.07 772,588.3 4,715,678.4 174,654.8 784 377,708.0 8.67 738,610.1 5,454,288.5 202,010.7 786 360,902.1 8.29 705,403.8 6,159,692.3 228,136.8 788 344,501.7 7.91 673,466.8 6,833,159.1 253,080.0 Permitted max 790 328,965.1 7.55 642,872.6 7,476,031.7 276,890.1 792 313,907.5 7.21 613,162.1 8,089,193.8 299,599.8 794 299,254.6 6.87 584,258.6 8,673,452.4 321,239.0 796 285,004.0 6.54 556,152.8 9,229,605.2 341,837.2 798 271,148.8 6.22 528,837.0 9,758,442.2 361,423.8 800 257,688.2 5.92 502,304.1 10,260,746.3 380,027.6 802 244,615.9 5.62 476,489.4 10,737,235.7 397,675.4 804 231,873.5 5.32 481,321.6 11,218,557.3 415,502.1 806 249,448.1 5.73 456,787.6 11,675,344.9 432,420.2 808 207,339.5 4.76 402,887.4 12,078,232.3 447,341.9 810 195,547.9 4.49 379,621.1 12,457,853.4 461,402.0 812 184,073.2 4.23 356,988.6 12,814,842.0 474,623.8 814 172,915.4 3.97 334,990.0 13,149,832.0 487,030.8 816 162,074.6 3.72 313,622.3 13,463,454.3 498,646.5 818 151,547.7 3.48 292,851.0 13,756,305.3 509,492.8 820 141,303.3 3.24 272,636.3 14,028,941.6 519,590.4 822 131,333.0 3.01 252,969.9 14,281,911.5 528,959.7 824 121,636.9 2.79 233,856.9 14,515,768.4 537,621.1 826 112,220.0 2.58 215,318.2 14,731,086.6 545,595.8 828 103,098.2 2.37 197,375.3 14,928,461.9 552,906.0 830 94,277.1 2.16 180,038.9 15,108,500.8 559,574.1 832 85,761.8 1.97 163,314.3 15,271,815.1 565,622.8 834 77,552.5 1.78 147,201.6 15,419,016.7 571,074.7 836 69,649.1 1.60 131,700.7 15,550,717.4 575,952.5 838 62,051.6 1.42 116,811.7 15,667,529.1 580,278.9 840 54,760.1 1.26 86,627.1 15,754,156.2 583,487.3 842 31,867.0 0.73 46,447.4 15,800,603.6 585,207.5 844 14,580.4 0.33 18,307.2 15,818,910.8 585,885.6 846 3,726.8 0.09 3,728.1 15,822,638.9 586,023.7 Subtotal 848 1.3 0.00 1.3 15,822,640.2 586,023.7 850 0.0 0.00 0.0 15,822,640.2 586,023.7 852 0.0 0.00 0.0 15,822,640.2 586,023.7 469,883.3 Available SCS Engineers, PC 3-8-2016 Gold Hill Road CDLF Phases 1-2 Project: Gold Hill Road CDLF and Processing Facility Calc'd by: OJH Date: 2/4/2016 Landfill Subgrade and Soil Liner Settlement Calculations Chk'd by: GDG Date: 2/5/2016 Location: Gold Hill Landfill Asheboro, NC Prepared by: SCS ENGINEERS, PC Date: February 4, 2016 2ft 110 pcf 2ft 100 pcf 1.5 ft 110 pcf 1.5 ft 110 pcf ∆σ(soil liner+soil cap+protective cover) =750 psf 110 pcf 1ft 110 pcf 25 ft 75 pcf ∆σ(waste) =1875 psf ∆σ(total) =2625 psf Elevation Depth N γs σo σo/2000 N'/N N'Cc'HoZc 783-780 3 NA 110 165 NA NA NA 100 3 0.037 780-773 6 74 120 360 0.18 1.41 104.3 240 6 0.023 773-769 4 88 120 240 0.12 1.44 126.7 240 4 0.018 769-759 10 500 120 600 0.30 1.35 675.0 300 10 0.024 759 Subgrade Total ∆Z 0.102 feet Zc(soil liner)0.29 feet Total Zc 0.39 feet Cc Ho eo γclay σo ∆σ(waste)∆σ(overburden)∆σ(total)Zc(soil liner) (feet) (pcf) (psf) (psf) (psf) (psf) (feet) Cell 2I East Bottom of Sump 0.17 2 0.603 110 110 1875 530 2405 0.29 Common Parameters for all Locations: Low Perm Bottom Liner Soil Depth (hclay) = Low Perm Bottom Liner Soil Density (γclay) = Protective Cover Depth (hpc) = Protective Cover Density (γpc) = Low Perm Cap Soil Depth (hlpc) = Cap Cover Soil Density (γccs) = Soil Fill Height (hfill) = Soil Fill Density (γfill) = Final Waste Height (hwaste) = Compacted Waste Density (γwaste) = Low Perm Cap Soil Density (γlpc) = Cap Cover Soil Depth (hccs) = Auger Refusal Phase 1 and 2 Peak Depth of Fill - Subgrade Elevation 783' - (Use Boring MW-19) Location Estimated Soil Liner Primary Consolidation Settlement (24" of Clay Soils) Added Soil Structural Fill (γsf) = C:\Users\3921gdg\Documents\Projects\02214705.00 Goldhill Road CDLF\T0006 2015 Permit Renewal\SCS Engineering Calcs\Landfill_Settlement_2-05-16Landfill_Settlement_2-05-161 of 1 Calculation of Veneer Stability for Static and Seismic Conditions Saturated and Unsaturated Cases Project: Gold Hill Road C&D Landfill Phase 1 3H:1V slope ratio Reference:Geotechnical and Stability Analyses for Ohio Waste Containment Facilitie Ohio EPA Geotechnical Resource Group, Guidance Document 660, September 2004 http://www.epa.state.oh.us/dsiwm/document/guidance/gd_660.pdf The described method calculates the factor of safety against final cover sliding with varying depths of water (head) above barrier layer, e.g., an upper vegetation-support layer above a synthetic membrane or compacted soil; precipitation depth can be specified (design storm), or for a given desired factor of safety, the minimum required friction angle can be determined (after Matasovic, 1991) For saturated conditions, assume a minimum 10-year, 60-min design storm impinges on surface soils at field capacity The following assumes a 3H:1V slope ratio, with 18 inches of vegetative cover soil above a compacted soil barrier (10^-5 cm/sec) A mimimal amount of cohesion may be assumed for a soil-to-soil interface - if a flexible membrane barrier is to be used, no cohesion is assumed and a synthetic drain layer or free draining sand must be used! The assumed design condition places a bench or diversion berm every 25 to 30 vertical feet, thus the slope length of interest is 75 feet The basic equation for the safety factor is: FS = {c/Gam-c*Zc*Cos^2Beta + tanPhi[1 - Gam-w(Zc - Dw)/(Gam-c*Zc)] - Ng*tanBeta*tanPhi } / Ng+tanBeta Eq. 9.1 where: Fs = 1.5 = Factor of Safety (for static case use 1.5, for seismic use 1.1) Ng = 0 = peak horizontal acceleration, %g (specific to region) Gam-c = 120 = unit weight of cover material, pcf (assume saturated) Gam-w = 62.4 = unit weight of water, pcf c = 0 = cohesion along failure surface, psf Phi = = internal angle of friction, degrees Beta = 18.43 = angle of slope (degrees), for 3H:1V slopes = 18.43 Zc = 1.5 = depth of cover soil, ft. Dw = = depth of water (assume parallel to slope), see Eq. 9.2 below Turned around, the equation becomes: Phi = tan^-1 {Fs*(Ng + tanBeta) - (c/Gam-c*Zc*Cos^2Beta) / [1 - (Gam-w*(Zc-Dw)/(Gam-c*Zc)] - Ng*tanBeta]} = 30.50 degrees See Summary The calculation of head follows: Havg = P(1-RC)*(L*cosBeta) / Kd*sinBeta = 13.3 cm = 0.44 feet Eq. 9.2 where: Havg = average head on failure surface P = precipitation, in/hr = 2.75 = 1.94E-03 (cm/sec) L = slope length, ft = 75 = 2286 (cm) RC = runoff coefficient = 0 Kd = permeability of drainage layer = 1 (cm/sec) thus, Dw = Zc - Havg = 1.06 feet Eq. 9.4 SUMMARY OF REQUIRED DESIGN PARAMETERS THE FOLLOWING ANALYSES ASSUME NO INTERFACE COHESION For unsaturated, static conditions, required minimum friction angle for a safety factor of 1.5 is 26.56 degrees For unsaturated, seismic conditions, required min. friction angle for a safety factor of 1.1 is 21.23 degrees For saturated, static conditions, required minimum friction angle for a safety factor of 1.5 is 30.50 degrees CRITICAL For saturated, seismic conditions, required minimum friction angle for a safety factor of 1.1 is 24.60 degrees INTERFACE TESING SHALL BE PERFORMED AS A CQA REQUIREMENT FOR ACTUAL FIELD CONDITIONS David Garrett, PG, PE 2/29/2016 ** PCSTABL5M3 ** by Purdue University 1985 rev. for SCS Engineers HVA 2008 1 --Slope Stability Analysis-- Simplified Janbu, Simplified Bishop or Spencer`s Method of Slices Run Date: 2/29/2016 Time of Run: 02:39PM Run By: James Law Input Data Filename: C:gheb10a.in Output Filename: C:gheb10a.OUT Unit: ENGLISH Plotted Output Filename: C:gheb10a.PLT PROBLEM DESCRIPTION GOLD HILL ROAD CDLF GLOBAL STABILITY, MOUNDING IN WASTE, SEISMIC = 0.04g, BLK BOUNDARY COORDINATES 7 Top Boundaries 16 Total Boundaries Boundary X-Left Y-Left X-Right Y-Right Soil Type No. (ft) (ft) (ft) (ft) Below Bnd 1 0.00 60.00 68.00 77.00 5 2 68.00 77.00 121.00 90.00 4 3 121.00 90.00 126.00 92.00 3 4 126.00 92.00 142.00 98.00 2 5 142.00 98.00 168.00 98.00 2 6 168.00 98.00 325.00 150.00 1 7 325.00 150.00 666.00 180.00 1 8 168.00 98.00 192.00 98.00 2 9 192.00 98.00 666.00 140.00 2 10 126.00 92.00 192.00 98.00 3 11 192.00 98.00 666.00 132.00 3 12 121.00 90.00 192.00 98.00 3 13 121.00 90.00 192.00 93.00 4 14 192.00 93.00 666.00 126.00 4 15 68.00 77.00 192.00 86.00 5 16 192.00 86.00 666.00 86.00 5 1 ISOTROPIC SOIL PARAMETERS 5 Type(s) of Soil Soil Total Saturated Cohesion Friction Pore Pressure Piez. Type Unit Wt. Unit Wt. Intercept Angle Pressure Constant Surface No. (pcf) (pcf) (psf) (deg) Param. (psf) No. 1 64.0 110.0 100.0 25.0 0.00 0.0 2 2 125.0 135.0 300.0 34.0 0.00 0.0 2 3 120.0 130.0 40.0 35.0 0.00 0.0 1 4 125.0 135.0 200.0 36.0 0.00 0.0 1 5 145.0 155.0 5000.0 45.0 0.00 0.0 1 1 2 PIEZOMETRIC SURFACE(S) HAVE BEEN SPECIFIED Unit Weight of Water = 62.40 Piezometric Surface No. 1 Specified by 3 Coordinate Points Point X-Water Y-Water No. (ft) (ft) 1 68.00 77.00 2 192.00 94.00 3 666.00 124.00 Piezometric Surface No. 2 Specified by 2 Coordinate Points Point X-Water Y-Water No. (ft) (ft) 1 198.00 108.00 2 666.00 160.00 A Horizontal Earthquake Loading Coefficient Of0.040 Has Been Assigned A Vertical Earthquake Loading Coefficient Of0.000 Has Been Assigned Cavitation Pressure = 0.0 (psf) 1 A Critical Failure Surface Searching Method, Using A Random Technique For Generating Sliding Block Surfaces, Has Been Specified. 1000 Trial Surfaces Have Been Generated. 2 Boxes Specified For Generation Of Central Block Base Length Of Line Segments For Active And Passive Portions Of Sliding Block Is 15.0 Box X-Left Y-Left X-Right Y-Right Height No. (ft) (ft) (ft) (ft) (ft) 1 185.00 94.00 200.00 96.00 10.00 2 250.00 100.00 350.00 110.00 10.00 1 Following Are Displayed The Ten Most Critical Of The Trial Failure Surfaces Examined. They Are Ordered - Most Critical First. * * Safety Factors Are Calculated By The Modified Janbu Method * * Failure Surface Specified By 6 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 185.79 103.89 2 192.15 98.19 3 274.80 106.42 4 285.39 117.04 5 292.34 130.33 6 300.35 141.84 *** 1.493 *** Individual data on the 7 slices Water Water Tie Tie Earthquake Force Force Force Force Force Surcharge Slice Width Weight Top Bot Norm Tan Hor Ver Load No. (ft) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) 1 6.4 2733.3 842.9 3155.1 0.0 0.0 109.3 0.0 0.0 2 5.8 5455.2 250.1 3348.4 0.0 0.0 218.2 0.0 0.0 3 76.8 122714.9 0.0 46288.6 0.0 0.0 4908.6 0.0 0.0 4 10.6 18480.6 0.0 5019.2 0.0 0.0 739.2 0.0 0.0 5 0.4 474.1 0.0 16.9 0.0 0.0 19.0 0.0 0.0 6 6.6 5911.6 0.0 0.0 0.0 0.0 236.5 0.0 0.0 7 8.0 2270.4 0.0 0.0 0.0 0.0 90.8 0.0 0.0 Failure Surface Specified By 6 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 185.79 103.89 2 192.15 98.19 3 274.80 106.42 4 285.39 117.04 5 292.34 130.33 6 300.35 141.84 *** 1.493 *** 1 Failure Surface Specified By 7 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 185.76 103.88 2 191.36 99.36 3 296.09 109.35 4 306.37 120.27 5 316.48 131.35 6 319.99 145.93 7 320.29 148.44 *** 1.527 *** Failure Surface Specified By 7 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 185.76 103.88 2 191.36 99.36 3 296.09 109.35 4 306.37 120.27 5 316.48 131.35 6 319.99 145.93 7 320.29 148.44 *** 1.527 *** 1 Failure Surface Specified By 7 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 185.76 103.88 2 191.36 99.36 3 296.09 109.35 4 306.37 120.27 5 316.48 131.35 6 319.99 145.93 7 320.29 148.44 *** 1.527 *** Failure Surface Specified By 7 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 176.59 100.84 2 187.32 97.53 3 316.01 110.99 4 326.62 121.59 5 333.49 134.93 6 343.61 146.00 7 349.78 152.18 *** 1.527 *** 1 Failure Surface Specified By 7 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 176.59 100.84 2 187.32 97.53 3 316.01 110.99 4 326.62 121.59 5 333.49 134.93 6 343.61 146.00 7 349.78 152.18 *** 1.527 *** Failure Surface Specified By 7 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 180.93 102.28 2 185.08 98.23 3 321.60 109.83 4 332.16 120.49 5 340.92 132.66 6 346.84 146.44 7 349.49 152.15 *** 1.551 *** 1 Failure Surface Specified By 7 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 180.93 102.28 2 185.08 98.23 3 321.60 109.83 4 332.16 120.49 5 340.92 132.66 6 346.84 146.44 7 349.49 152.15 *** 1.551 *** Failure Surface Specified By 7 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 180.93 102.28 2 185.08 98.23 3 321.60 109.83 4 332.16 120.49 5 340.92 132.66 6 346.84 146.44 7 349.49 152.15 *** 1.551 *** 1 Y A X I S F T 0.00 83.25 166.50 249.75 333.00 416.25 X 0.00 +------*--+---------+---------+---------+---------+ - - - - - * 83.25 + - - - * - * - .. A 166.50 + .* - .1. - ***W - - - X 249.75 + ..... - ..... - .1... - .31.1. - ..3..1. - .6..3.* I 333.00 + ..866.. - ...8.6 - ..... - ..... - .. - S 416.25 + - - - - - 499.50 + - - - - - F 582.75 + - - - - - T 666.00 + * *** W * ** PCSTABL5M3 ** by Purdue University 1985 rev. for SCS Engineers HVA 2008 1 --Slope Stability Analysis-- Simplified Janbu, Simplified Bishop or Spencer`s Method of Slices Run Date: 2/29/2016 Time of Run: 02:53PM Run By: James Law Input Data Filename: C:ghec10a.in Output Filename: C:ghec10a.OUT Unit: ENGLISH Plotted Output Filename: C:ghec10a.PLT PROBLEM DESCRIPTION GOLD HILL ROAD CDLF GLOBAL STABILITY, MOUNDING IN WASTE, SEISMIC = 0.04g, CIR BOUNDARY COORDINATES 7 Top Boundaries 16 Total Boundaries Boundary X-Left Y-Left X-Right Y-Right Soil Type No. (ft) (ft) (ft) (ft) Below Bnd 1 0.00 60.00 68.00 77.00 5 2 68.00 77.00 121.00 90.00 4 3 121.00 90.00 126.00 92.00 3 4 126.00 92.00 142.00 98.00 2 5 142.00 98.00 168.00 98.00 2 6 168.00 98.00 325.00 150.00 1 7 325.00 150.00 666.00 180.00 1 8 168.00 98.00 192.00 98.00 2 9 192.00 98.00 666.00 140.00 2 10 126.00 92.00 192.00 98.00 3 11 192.00 98.00 666.00 132.00 3 12 121.00 90.00 192.00 98.00 3 13 121.00 90.00 192.00 93.00 4 14 192.00 93.00 666.00 126.00 4 15 68.00 77.00 192.00 86.00 5 16 192.00 86.00 666.00 86.00 5 1 ISOTROPIC SOIL PARAMETERS 5 Type(s) of Soil Soil Total Saturated Cohesion Friction Pore Pressure Piez. Type Unit Wt. Unit Wt. Intercept Angle Pressure Constant Surface No. (pcf) (pcf) (psf) (deg) Param. (psf) No. 1 64.0 110.0 100.0 25.0 0.00 0.0 2 2 125.0 135.0 300.0 34.0 0.00 0.0 2 3 120.0 130.0 40.0 35.0 0.00 0.0 1 4 125.0 135.0 200.0 36.0 0.00 0.0 1 5 145.0 155.0 5000.0 45.0 0.00 0.0 1 1 2 PIEZOMETRIC SURFACE(S) HAVE BEEN SPECIFIED Unit Weight of Water = 62.40 Piezometric Surface No. 1 Specified by 3 Coordinate Points Point X-Water Y-Water No. (ft) (ft) 1 68.00 77.00 2 192.00 94.00 3 666.00 124.00 Piezometric Surface No. 2 Specified by 2 Coordinate Points Point X-Water Y-Water No. (ft) (ft) 1 198.00 108.00 2 666.00 160.00 A Horizontal Earthquake Loading Coefficient Of0.040 Has Been Assigned A Vertical Earthquake Loading Coefficient Of0.000 Has Been Assigned Cavitation Pressure = 0.0 (psf) 1 A Critical Failure Surface Searching Method, Using A Random Technique For Generating Circular Surfaces, Has Been Specified. 2000 Trial Surfaces Have Been Generated. 40 Surfaces Initiate From Each Of 50 Points Equally Spaced Along The Ground Surface Between X = 150.00 ft. and X = 200.00 ft. Each Surface Terminates Between X = 250.00 ft. and X = 450.00 ft. Unless Further Limitations Were Imposed, The Minimum Elevation At Which A Surface Extends Is Y = 0.00 ft. 20.00 ft. Line Segments Define Each Trial Failure Surface. 1 Following Are Displayed The Ten Most Critical Of The Trial Failure Surfaces Examined. They Are Ordered - Most Critical First. * * Safety Factors Are Calculated By The Modified Bishop Method * * Failure Surface Specified By 11 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 173.47 99.81 2 193.46 99.21 3 213.43 100.23 4 233.26 102.88 5 252.80 107.14 6 271.93 112.97 7 290.52 120.35 8 308.45 129.22 9 325.59 139.51 10 341.84 151.17 11 342.24 151.52 Circle Center At X = 190.9 ; Y = 344.4 and Radius, 245.2 *** 1.474 *** Individual data on the 13 slices Water Water Tie Tie Earthquake Force Force Force Force Force Surcharge Slice Width Weight Top Bot Norm Tan Hor Ver Load No. (ft) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) 1 20.0 7945.9 4232.4 8529.2 0.0 0.0 317.8 0.0 0.0 2 4.5 3925.8 152.7 2375.1 0.0 0.0 157.0 0.0 0.0 3 15.4 16893.2 0.0 8647.5 0.0 0.0 675.7 0.0 0.0 4 19.8 27136.6 0.0 11485.3 0.0 0.0 1085.5 0.0 0.0 5 19.5 29452.7 0.0 9914.1 0.0 0.0 1178.1 0.0 0.0 6 19.1 27959.6 0.0 6319.5 0.0 0.0 1118.4 0.0 0.0 7 11.3 14688.2 0.0 1225.9 0.0 0.0 587.5 0.0 0.0 8 7.2 8565.9 0.0 0.0 0.0 0.0 342.6 0.0 0.0 9 17.9 19236.1 0.0 0.0 0.0 0.0 769.4 0.0 0.0 10 16.6 13848.0 0.0 0.0 0.0 0.0 553.9 0.0 0.0 11 0.6 405.2 0.0 0.0 0.0 0.0 16.2 0.0 0.0 12 16.2 5639.2 0.0 0.0 0.0 0.0 225.6 0.0 0.0 13 0.4 4.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 Failure Surface Specified By 9 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 179.59 101.84 2 199.50 99.88 3 219.49 100.53 4 239.22 103.78 5 258.36 109.58 6 276.59 117.81 7 293.58 128.35 8 309.06 141.02 9 314.12 146.40 Circle Center At X = 204.5 ; Y = 253.0 and Radius, 153.2 *** 1.477 *** 1 Failure Surface Specified By 9 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 175.51 100.49 2 195.47 99.21 3 215.44 100.32 4 235.13 103.81 5 254.27 109.63 6 272.57 117.69 7 289.77 127.89 8 305.64 140.06 9 311.08 145.39 Circle Center At X = 196.2 ; Y = 266.3 and Radius, 167.0 *** 1.482 *** Failure Surface Specified By 10 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 171.43 99.14 2 191.43 99.00 3 211.37 100.49 4 231.13 103.59 5 250.58 108.27 6 269.58 114.51 7 288.01 122.26 8 305.76 131.48 9 322.70 142.11 10 334.38 150.83 Circle Center At X = 183.2 ; Y = 344.8 and Radius, 245.9 *** 1.489 *** 1 Failure Surface Specified By 8 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 172.45 99.47 2 192.42 98.43 3 212.37 99.88 4 231.98 103.82 5 250.94 110.19 6 268.96 118.87 7 285.75 129.73 8 299.98 141.71 Circle Center At X = 190.8 ; Y = 257.7 and Radius, 159.3 *** 1.491 *** Failure Surface Specified By 9 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 182.65 102.85 2 202.57 101.00 3 222.56 101.59 4 242.33 104.62 5 261.58 110.04 6 280.03 117.77 7 297.39 127.69 8 313.42 139.65 9 323.81 149.61 Circle Center At X = 207.7 ; Y = 264.5 and Radius, 163.6 *** 1.493 *** 1 Failure Surface Specified By 11 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 176.53 100.83 2 196.51 99.86 3 216.50 100.37 4 236.40 102.35 5 256.11 105.78 6 275.50 110.65 7 294.49 116.93 8 312.97 124.59 9 330.83 133.59 10 347.98 143.87 11 361.20 153.18 Circle Center At X = 199.6 ; Y = 371.9 and Radius, 272.0 *** 1.508 *** Failure Surface Specified By 11 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 170.41 98.80 2 190.41 99.14 3 210.33 100.85 4 230.09 103.93 5 249.60 108.35 6 268.75 114.11 7 287.47 121.16 8 305.66 129.48 9 323.23 139.03 10 340.11 149.76 11 342.52 151.54 Circle Center At X = 175.4 ; Y = 390.1 and Radius, 291.3 *** 1.518 *** 1 Failure Surface Specified By 8 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 186.73 104.21 2 206.55 101.49 3 226.54 102.08 4 246.16 105.96 5 264.87 113.02 6 282.16 123.08 7 297.55 135.85 8 303.68 142.94 Circle Center At X = 213.0 ; Y = 220.7 and Radius, 119.4 *** 1.531 *** Failure Surface Specified By 7 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 183.67 103.19 2 203.46 100.27 3 223.44 101.22 4 242.86 106.00 5 260.99 114.44 6 277.15 126.22 7 287.75 137.66 Circle Center At X = 208.6 ; Y = 203.4 and Radius, 103.2 *** 1.533 *** 1 Y A X I S F T 0.00 83.25 166.50 249.75 333.00 416.25 X 0.00 +------*--+---------+---------+---------+---------+ - - - - - * 83.25 + - - - * - * - . A 166.50 + ..* - ...19 - ...***W - .....1. - ......2.. - ......16. X 249.75 + ........1.. - ........24.. - ........719. - .........1250 - ...........12. - ..........7.1* I 333.00 + ..........7.4 - ...........71 - ...........7 - ............ - ............ - .......... S 416.25 + ........ - ...... - .... - - - 499.50 + - - - - - F 582.75 + - - - - - T 666.00 + * *** W * ** PCSTABL5M3 ** by Purdue University 1985 rev. for SCS Engineers HVA 2008 1 --Slope Stability Analysis-- Simplified Janbu, Simplified Bishop or Spencer`s Method of Slices Run Date: 2/29/2016 Time of Run: 02:52PM Run By: James Law Input Data Filename: C:ghsb10a.in Output Filename: C:ghsb10a.OUT Unit: ENGLISH Plotted Output Filename: C:ghsb10a.PLT PROBLEM DESCRIPTION GOLD HILL ROAD CDLF GLOBAL STABILITY, MOUNDING IN WASTE, STATIC, BLOCK BOUNDARY COORDINATES 7 Top Boundaries 16 Total Boundaries Boundary X-Left Y-Left X-Right Y-Right Soil Type No. (ft) (ft) (ft) (ft) Below Bnd 1 0.00 60.00 68.00 77.00 5 2 68.00 77.00 121.00 90.00 4 3 121.00 90.00 126.00 92.00 3 4 126.00 92.00 142.00 98.00 2 5 142.00 98.00 168.00 98.00 2 6 168.00 98.00 325.00 150.00 1 7 325.00 150.00 666.00 180.00 1 8 168.00 98.00 192.00 98.00 2 9 192.00 98.00 666.00 140.00 2 10 126.00 92.00 192.00 98.00 3 11 192.00 98.00 666.00 132.00 3 12 121.00 90.00 192.00 98.00 3 13 121.00 90.00 192.00 93.00 4 14 192.00 93.00 666.00 126.00 4 15 68.00 77.00 192.00 86.00 5 16 192.00 86.00 666.00 86.00 5 1 ISOTROPIC SOIL PARAMETERS 5 Type(s) of Soil Soil Total Saturated Cohesion Friction Pore Pressure Piez. Type Unit Wt. Unit Wt. Intercept Angle Pressure Constant Surface No. (pcf) (pcf) (psf) (deg) Param. (psf) No. 1 64.0 110.0 100.0 25.0 0.00 0.0 2 2 125.0 135.0 300.0 34.0 0.00 0.0 2 3 120.0 130.0 40.0 35.0 0.00 0.0 1 4 125.0 135.0 200.0 36.0 0.00 0.0 1 5 145.0 155.0 5000.0 45.0 0.00 0.0 1 1 2 PIEZOMETRIC SURFACE(S) HAVE BEEN SPECIFIED Unit Weight of Water = 62.40 Piezometric Surface No. 1 Specified by 3 Coordinate Points Point X-Water Y-Water No. (ft) (ft) 1 68.00 77.00 2 192.00 94.00 3 666.00 124.00 Piezometric Surface No. 2 Specified by 2 Coordinate Points Point X-Water Y-Water No. (ft) (ft) 1 198.00 108.00 2 666.00 160.00 1 A Critical Failure Surface Searching Method, Using A Random Technique For Generating Sliding Block Surfaces, Has Been Specified. 1000 Trial Surfaces Have Been Generated. 2 Boxes Specified For Generation Of Central Block Base Length Of Line Segments For Active And Passive Portions Of Sliding Block Is 10.0 Box X-Left Y-Left X-Right Y-Right Height No. (ft) (ft) (ft) (ft) (ft) 1 185.00 94.00 200.00 96.00 10.00 2 250.00 100.00 350.00 110.00 10.00 1 Following Are Displayed The Ten Most Critical Of The Trial Failure Surfaces Examined. They Are Ordered - Most Critical First. * * Safety Factors Are Calculated By The Modified Janbu Method * * Failure Surface Specified By 9 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 183.02 102.98 2 189.06 97.56 3 298.72 108.98 4 305.66 116.18 5 312.53 123.45 6 319.22 130.88 7 323.93 139.70 8 328.01 148.83 9 328.79 150.33 *** 1.765 *** Individual data on the 17 slices Water Water Tie Tie Earthquake Force Force Force Force Force Surcharge Slice Width Weight Top Bot Norm Tan Hor Ver Load No. (ft) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) 1 5.5 2077.7 988.5 2844.5 0.0 0.0 0.0 0.0 0.0 2 0.3 244.3 42.5 239.6 0.0 0.0 0.0 0.0 0.0 3 0.1 54.0 8.8 0.0 0.0 0.0 0.0 0.0 0.0 4 0.1 91.2 14.6 0.0 0.0 0.0 0.0 0.0 0.0 5 2.9 2518.5 318.4 0.0 0.0 0.0 0.0 0.0 0.0 6 4.3 4017.5 240.0 0.0 0.0 0.0 0.0 0.0 0.0 7 1.7 1778.8 22.7 1034.7 0.0 0.0 0.0 0.0 0.0 8 2.9 3056.6 0.0 1709.7 0.0 0.0 0.0 0.0 0.0 9 97.8 177006.0 0.0 60245.3 0.0 0.0 0.0 0.0 0.0 10 6.9 15474.8 0.0 4340.5 0.0 0.0 0.0 0.0 0.0 11 4.0 6980.9 0.0 681.8 0.0 0.0 0.0 0.0 0.0 12 2.9 4318.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13 6.7 8490.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 14 4.7 4094.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15 1.1 609.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16 3.0 900.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17 0.8 35.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Failure Surface Specified By 9 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 183.02 102.98 2 189.06 97.56 3 298.72 108.98 4 305.66 116.18 5 312.53 123.45 6 319.22 130.88 7 323.93 139.70 8 328.01 148.83 9 328.79 150.33 *** 1.765 *** 1 Failure Surface Specified By 9 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 183.02 102.98 2 189.06 97.56 3 298.72 108.98 4 305.66 116.18 5 312.53 123.45 6 319.22 130.88 7 323.93 139.70 8 328.01 148.83 9 328.79 150.33 *** 1.765 *** Failure Surface Specified By 8 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 188.19 104.69 2 196.15 99.73 3 287.74 107.19 4 293.36 115.46 5 298.41 124.09 6 304.82 131.76 7 309.88 140.39 8 312.96 146.01 *** 1.767 *** 1 Failure Surface Specified By 8 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 188.19 104.69 2 196.15 99.73 3 287.74 107.19 4 293.36 115.46 5 298.41 124.09 6 304.82 131.76 7 309.88 140.39 8 312.96 146.01 *** 1.767 *** Failure Surface Specified By 8 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 192.49 106.11 2 198.44 100.79 3 273.16 107.02 4 279.27 114.94 5 286.07 122.27 6 293.01 129.46 7 300.06 136.55 8 301.78 142.31 *** 1.781 *** 1 Failure Surface Specified By 8 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 192.49 106.11 2 198.44 100.79 3 273.16 107.02 4 279.27 114.94 5 286.07 122.27 6 293.01 129.46 7 300.06 136.55 8 301.78 142.31 *** 1.781 *** Failure Surface Specified By 10 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 182.79 102.90 2 188.46 100.33 3 198.33 98.73 4 315.01 110.76 5 322.04 117.87 6 329.00 125.05 7 334.91 133.12 8 341.82 140.35 9 342.77 150.30 10 343.90 151.66 *** 1.793 *** 1 Failure Surface Specified By 10 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 182.79 102.90 2 188.46 100.33 3 198.33 98.73 4 315.01 110.76 5 322.04 117.87 6 329.00 125.05 7 334.91 133.12 8 341.82 140.35 9 342.77 150.30 10 343.90 151.66 *** 1.793 *** Failure Surface Specified By 10 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 182.79 102.90 2 188.46 100.33 3 198.33 98.73 4 315.01 110.76 5 322.04 117.87 6 329.00 125.05 7 334.91 133.12 8 341.82 140.35 9 342.77 150.30 10 343.90 151.66 *** 1.793 *** 1 Y A X I S F T 0.00 83.25 166.50 249.75 333.00 416.25 X 0.00 +------*--+---------+---------+---------+---------+ - - - - - * 83.25 + - - - * - * - .. A 166.50 + .* - .1. - ***W - - - X 249.75 + .... - ..... - .66.. - .4466. - .11444. - .88111* I 333.00 + ...88.1 - ....88 - ...... - ..... - ... - S 416.25 + - - - - - 499.50 + - - - - - F 582.75 + - - - - - T 666.00 + * *** W * ** PCSTABL5M3 ** by Purdue University 1985 rev. for SCS Engineers HVA 2008 1 --Slope Stability Analysis-- Simplified Janbu, Simplified Bishop or Spencer`s Method of Slices Run Date: 2/29/2016 Time of Run: 02:42PM Run By: James Law Input Data Filename: C:ghSC10a.in Output Filename: C:ghSC10a.OUT Unit: ENGLISH Plotted Output Filename: C:ghSC10a.PLT PROBLEM DESCRIPTION GOLD HILL ROAD CDLF GLOBAL STABILITY, MOUNDING IN WASTE, STATIC, CIRCLE BOUNDARY COORDINATES 7 Top Boundaries 16 Total Boundaries Boundary X-Left Y-Left X-Right Y-Right Soil Type No. (ft) (ft) (ft) (ft) Below Bnd 1 0.00 60.00 68.00 77.00 5 2 68.00 77.00 121.00 90.00 4 3 121.00 90.00 126.00 92.00 3 4 126.00 92.00 142.00 98.00 2 5 142.00 98.00 168.00 98.00 2 6 168.00 98.00 325.00 150.00 1 7 325.00 150.00 666.00 180.00 1 8 168.00 98.00 192.00 98.00 2 9 192.00 98.00 666.00 140.00 2 10 126.00 92.00 192.00 98.00 3 11 192.00 98.00 666.00 132.00 3 12 121.00 90.00 192.00 98.00 3 13 121.00 90.00 192.00 93.00 4 14 192.00 93.00 666.00 126.00 4 15 68.00 77.00 192.00 86.00 5 16 192.00 86.00 666.00 86.00 5 1 ISOTROPIC SOIL PARAMETERS 5 Type(s) of Soil Soil Total Saturated Cohesion Friction Pore Pressure Piez. Type Unit Wt. Unit Wt. Intercept Angle Pressure Constant Surface No. (pcf) (pcf) (psf) (deg) Param. (psf) No. 1 64.0 110.0 100.0 25.0 0.00 0.0 2 2 125.0 135.0 300.0 34.0 0.00 0.0 2 3 120.0 130.0 40.0 35.0 0.00 0.0 1 4 125.0 135.0 200.0 36.0 0.00 0.0 1 5 145.0 155.0 5000.0 45.0 0.00 0.0 1 1 2 PIEZOMETRIC SURFACE(S) HAVE BEEN SPECIFIED Unit Weight of Water = 62.40 Piezometric Surface No. 1 Specified by 3 Coordinate Points Point X-Water Y-Water No. (ft) (ft) 1 68.00 77.00 2 192.00 94.00 3 666.00 124.00 Piezometric Surface No. 2 Specified by 2 Coordinate Points Point X-Water Y-Water No. (ft) (ft) 1 198.00 108.00 2 666.00 160.00 1 A Critical Failure Surface Searching Method, Using A Random Technique For Generating Circular Surfaces, Has Been Specified. 2000 Trial Surfaces Have Been Generated. 40 Surfaces Initiate From Each Of 50 Points Equally Spaced Along The Ground Surface Between X = 150.00 ft. and X = 200.00 ft. Each Surface Terminates Between X = 250.00 ft. and X = 450.00 ft. Unless Further Limitations Were Imposed, The Minimum Elevation At Which A Surface Extends Is Y = 0.00 ft. 20.00 ft. Line Segments Define Each Trial Failure Surface. 1 Following Are Displayed The Ten Most Critical Of The Trial Failure Surfaces Examined. They Are Ordered - Most Critical First. * * Safety Factors Are Calculated By The Modified Bishop Method * * Failure Surface Specified By 11 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 173.47 99.81 2 193.46 99.21 3 213.43 100.23 4 233.26 102.88 5 252.80 107.14 6 271.93 112.97 7 290.52 120.35 8 308.45 129.22 9 325.59 139.51 10 341.84 151.17 11 342.24 151.52 Circle Center At X = 190.9 ; Y = 344.4 and Radius, 245.2 *** 1.706 *** Individual data on the 13 slices Water Water Tie Tie Earthquake Force Force Force Force Force Surcharge Slice Width Weight Top Bot Norm Tan Hor Ver Load No. (ft) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) (lbs) 1 20.0 7945.9 4232.4 8529.2 0.0 0.0 0.0 0.0 0.0 2 4.5 3925.8 152.7 2375.1 0.0 0.0 0.0 0.0 0.0 3 15.4 16893.2 0.0 8647.5 0.0 0.0 0.0 0.0 0.0 4 19.8 27136.6 0.0 11485.3 0.0 0.0 0.0 0.0 0.0 5 19.5 29452.7 0.0 9914.1 0.0 0.0 0.0 0.0 0.0 6 19.1 27959.6 0.0 6319.5 0.0 0.0 0.0 0.0 0.0 7 11.3 14688.2 0.0 1225.9 0.0 0.0 0.0 0.0 0.0 8 7.2 8565.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 17.9 19236.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 16.6 13848.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 0.6 405.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12 16.2 5639.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13 0.4 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Failure Surface Specified By 9 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 179.59 101.84 2 199.50 99.88 3 219.49 100.53 4 239.22 103.78 5 258.36 109.58 6 276.59 117.81 7 293.58 128.35 8 309.06 141.02 9 314.12 146.40 Circle Center At X = 204.5 ; Y = 253.0 and Radius, 153.2 *** 1.709 *** 1 Failure Surface Specified By 9 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 175.51 100.49 2 195.47 99.21 3 215.44 100.32 4 235.13 103.81 5 254.27 109.63 6 272.57 117.69 7 289.77 127.89 8 305.64 140.06 9 311.08 145.39 Circle Center At X = 196.2 ; Y = 266.3 and Radius, 167.0 *** 1.717 *** Failure Surface Specified By 10 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 171.43 99.14 2 191.43 99.00 3 211.37 100.49 4 231.13 103.59 5 250.58 108.27 6 269.58 114.51 7 288.01 122.26 8 305.76 131.48 9 322.70 142.11 10 334.38 150.83 Circle Center At X = 183.2 ; Y = 344.8 and Radius, 245.9 *** 1.720 *** 1 Failure Surface Specified By 9 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 182.65 102.85 2 202.57 101.00 3 222.56 101.59 4 242.33 104.62 5 261.58 110.04 6 280.03 117.77 7 297.39 127.69 8 313.42 139.65 9 323.81 149.61 Circle Center At X = 207.7 ; Y = 264.5 and Radius, 163.6 *** 1.723 *** Failure Surface Specified By 8 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 172.45 99.47 2 192.42 98.43 3 212.37 99.88 4 231.98 103.82 5 250.94 110.19 6 268.96 118.87 7 285.75 129.73 8 299.98 141.71 Circle Center At X = 190.8 ; Y = 257.7 and Radius, 159.3 *** 1.732 *** 1 Failure Surface Specified By 11 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 170.41 98.80 2 190.41 99.14 3 210.33 100.85 4 230.09 103.93 5 249.60 108.35 6 268.75 114.11 7 287.47 121.16 8 305.66 129.48 9 323.23 139.03 10 340.11 149.76 11 342.52 151.54 Circle Center At X = 175.4 ; Y = 390.1 and Radius, 291.3 *** 1.755 *** Failure Surface Specified By 11 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 176.53 100.83 2 196.51 99.86 3 216.50 100.37 4 236.40 102.35 5 256.11 105.78 6 275.50 110.65 7 294.49 116.93 8 312.97 124.59 9 330.83 133.59 10 347.98 143.87 11 361.20 153.18 Circle Center At X = 199.6 ; Y = 371.9 and Radius, 272.0 *** 1.755 *** 1 Failure Surface Specified By 8 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 186.73 104.21 2 206.55 101.49 3 226.54 102.08 4 246.16 105.96 5 264.87 113.02 6 282.16 123.08 7 297.55 135.85 8 303.68 142.94 Circle Center At X = 213.0 ; Y = 220.7 and Radius, 119.4 *** 1.770 *** Failure Surface Specified By 8 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 193.88 106.57 2 213.46 102.50 3 233.45 101.95 4 253.23 104.94 5 272.16 111.37 6 289.67 121.05 7 305.19 133.66 8 316.96 147.34 Circle Center At X = 226.5 ; Y = 214.2 and Radius, 112.4 *** 1.775 *** 1 Y A X I S F T 0.00 83.25 166.50 249.75 333.00 416.25 X 0.00 +------*--+---------+---------+---------+---------+ - - - - - * 83.25 + - - - * - * - . A 166.50 + ..* - ...19 - ...***W - .....1. - ......2.. - ......15. X 249.75 + ........1.. - ........24.. - ........819. - .........126. - ...........12. - ..........8.1* I 333.00 + ..........8.4 - ...........81 - ...........8 - ............ - ............ - .......... S 416.25 + ........ - ...... - .... - - - 499.50 + - - - - - F 582.75 + - - - - - T 666.00 + * *** W * Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | | Construction Quality Assurance Plan Gold Hill Road C&D Landfill Solid Waste Permit 7606-CDLF-2001 Submitted to: NCDEQ Division of Waste Management Solid Waste Section 217 W Jones Street Raleigh, NC 27603 Presented To: Morton and Sewell Land Company, LLC 385 Gold Hill Road Asheboro, North Carolina 27203 Presented By: SCS ENGINEERS 322 Chapanoke Road, Suite 101 Raleigh, NC 27603 (919) 662-3015 March 1, 2016 File No. 02214705.00 Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | i | Table of Contents Section Page FOREWORD ........................................................................................................................1 1.0 Definitions .................................................................................................................... 1 1.1 Construction Quality Assurance (CQA) ....................................................1 1.2 Construction Quality Control (CQC) ........................................................1 1.3 CQA Certification Document ...................................................................2 1.4 Discrepancies Between Documents ..........................................................2 2.0 Responsibilities and Authorities ...........................................................................2 2.1 Owner .....................................................................................................2 2.2 Engineer ..................................................................................................2 2.3 Contractor ...............................................................................................3 2.4 CQA Testing ...........................................................................................3 3.0 Control vs. Records Testing .................................................................................3 3.1 Control Testing ........................................................................................3 3.2 Record Testing ........................................................................................3 4.0 Modifications and Amendment ...........................................................................3 5.0 Miscellaneous ......................................................................................................4 5.1 Units .......................................................................................................4 5.2 References ..............................................................................................4 6.0 Inspection, Sampling and Testing ........................................................................4 6.1 General Earthwork .................................................................................4 6.1.1 Compaction Criteria ....................................................................4 6.1.2 Testing Criteria ............................................................................5 6.1.3 Material Evaluation .....................................................................5 6.1.4 Subgrade Approval ....................................................................5 6.2 General Earthwork Construction .............................................................5 6.2.1 Construction Monitoring ...............................................................5 6.2.2 Control Tests ................................................................................6 6.2.3 Record Tests .................................................................................6 Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | ii | 6.2.4 Record Test Failure ......................................................................6 6.2.5 Judgment Testing .........................................................................6 6.2.6 Deficiencies ..................................................................................7 6.3 Final Cover Systems ................................................................................7 6.3.1 Material Approval .......................................................................7 6.3.2 Final Cover Systems Installation ...................................................8 6.3.3 Deficiencies ..................................................................................8 7.0 CQA Meetings ....................................................................................................8 7.1 Project Initiation CQA Meeting ...............................................................9 7.2 CQA Progress Meetings ..........................................................................9 7.3 Problem or Work Deficiency Meetings ...................................................9 8.0 Documentation and Reporting ...........................................................................10 8.1 Periodic CQA Reports ...........................................................................10 8.2 CQA Progress Reports ..........................................................................11 8.3 CQA Photographic Reporting ...........................................................................12 8.4 Documentation of Deficiencies ..............................................................12 8.5 Design or Specification Changes ..........................................................12 9.0 Final CQA Report .............................................................................................12 11.0 Storage of Records ...........................................................................................14 12.0 Protection of Finished Surfaces .........................................................................14 TABLES Refer to the in-text tables referenced by page number A CQA Testing Schedule for General Earthwork ...................................................... 15 B CQA Testing Schedule for Drainage and Final Cover ........................................ 16 C CQA Testing Schedule for Compacted Soil Barrier ............................................ 17 D Reference List of ASTM Test Methods .................................................................... 18 Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 1 | FOREWORD This CQA Plan has been prepared to provide the Owner, Engineer, and CQA Testing Firm – operating as a coordinated team – the means to govern the construction quality and to satisfy landfill certification requirements. The CQA program includes both a quantitative testing program (by a third-party) and qualitative evaluations (by all parties) to assure that the construction meets the desired criteria for long-term performance. Variations in material properties and working conditions may require minor modification of handling and placement techniques throughout the project. Close communication between the various parties is paramount. It is anticipated that the early stages of the construction activities will require more attention by the CQA team, i.e., the Contractor, Engineer, Owner and CQA Testing Firm. The requirements of the CQA program (construction oversight and testing) apply to the preparation of the base grades, embankments, and engineered subgrade, as well as the final cover installation. All lines, grades, and layer thicknesses shall be confirmed by topographic surveys performed under the supervision of the Engineer of Record or the CQA Testing Firm, and as- built drawings of the base grades and final cover shall be made part of the construction records. Once the base grade and final cover construction is completed, the Engineer shall verify that all surfaces are vegetated within 20 days following completion of final grades. The Engineer shall also verify that interior slopes and base grades of new cells are protected until waste is placed. 1.0 DEFINITIONS 1.1 Construction Quality Assurance (CQA) – In the context of this CQA Plan, Construction Quality Assurance is defined as a planned and systematic program employed by the Owner to assure conformity of base grade and embankment construction and the final cover system installation with the project drawings and specifications. CQA is provided by the CQA Testing Firm as a representative of the Owner and is independent from the Contractor and all manufacturers. The CQA program is designed to provide confidence that the items or services brought to the job meet contractual and regulatory requirements and that the final cover will perform satisfactorily in service. 1.2 Construction Quality Control (CQC) – Construction Quality Control refers to actions taken by manufacturers, fabricators, installers, and/or the Contractor to ensure that the materials and the workmanship meet the requirements of the project drawings and the project specifications. The manufacturer's specifications and quality control (QC) requirements are included in this CQA Manual by reference only. A complete updated version of each manufacturer's QC Plan for any Contractor-supplied components shall be incorporated as part of the Contractor's CQC submittal. The Owner and/or the Engineer shall approve the Contractor’s QC submittal prior to initial construction. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 2 | 1.3 CQA Certification Document – The Owner and/or the Engineer will prepare a certification document upon completion of construction, or phases of construction. The Owner will submit these documents to the NC DEQ Division of Waste Management Solid Waste Section. The CQA certification report will include relevant testing performed by the CQA Testing Firm, including field testing used to verify preliminary test results and/or design assumptions, records of field observations, and documentation of any modifications to the design and/or testing program. An “as-built” drawing (prepared by/for the Owner), showing competed contours, shall be included. The Certification Document may be completed in increments, i.e., as several documents, as respective portions of the final cover are completed. Section 2 discusses the documentation requirements. 1.4 Discrepancies Between Documents – The Contractor shall be instructed to bring discrepancies to the attention of the CQA Testing Firm who shall then notify the Owner for resolution. The Owner has the sole authority to determine resolution of discrepancies existing within the Contract Documents (this may also require the approval of State Solid Waste Regulators). Unless otherwise determined by the Owner, the more stringent requirement shall be the controlling resolution. 2.0 RESPONSIBILITIES AND AUTHORITIES The parties to Construction Quality Assurance and Quality Control include the Owner, Engineer, Contractor, CQA Testing Firm (i.e., a qualified Soils Laboratory). 2.1 Owner – The Owner is Morton and Sewell Land Company, LLC who operates and is responsible for the facility. The Owner or his designee is responsible for the project and will serve as liaison between the various parties. 2.2 Engineer – The Engineer (a.k.a. the “Engineer of Record”) is responsible for the engineering design, drawings, and project specifications, regulatory affairs, and communications coordinator for the construction of the base grades, embankments, engineered subgrade, drainage and final cover systems. The Engineer represents the Owner and coordinates communications and meetings. The Engineer shall also be responsible for proper resolution of all quality issues that arise during construction. The Engineer shall prepare the CQA certification documents, with input from the Owner, the CQA Testing Firm and the Owner’s Surveyor. The Engineer shall be registered in the State of North Carolina. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 3 | 2.3 Contractor – The Contractor is responsible for the construction of the subgrade, earthwork, and final cover system. The Contractor is responsible for the overall CQC on the project and coordination of submittals to the Engineer. Additional responsibilities of the Contractor include compliance with 15A NCAC 4, i.e., the North Carolina Sedimentation and Erosion Control rules. Qualifications – The Contractor qualifications are specific to the construction contract documents and are independent of this CQA Manual. The Owner may serve as the contractor, as long as the specifications are met. 2.4 CQA Testing Firm – The CQA Testing Firm (a.k.a. Soils Laboratory) is a representative of the Owner, independent from the Contractor, and is responsible for conducting geotechnical tests on conformance samples of soils and aggregates used in structural fills and the final cover system. Periodic site visits shall be coordinated with the Engineer of Record and the Contractor. Qualifications – The CQA Testing Firm shall have experience in the CQA aspects of landfill construction and be familiar with ASTM and other related industry standards. The Soils CQA Laboratory will be capable of providing test results within 24 hours or a reasonable time after receipt of samples, depending on the test(s) to be conducted, as agreed to at the outset of the project by affected parties, and will maintain that standard throughout the construction. 3.0 CONTROL VS. RECORDS TESTING 3.1 Control Testing – In the context of this CQA plan, Control Tests are those tests performed on a material prior to its actual use in construction to demonstrate that it can meet the requirements of the project plans and specifications. Control Test data may be used by the Engineer as the basis for approving alternative material sources. 3.2 Record Testing – Record Tests are those tests performed during or after the actual placement of a material to demonstrate that its in-place properties meet or exceed the requirements of the project drawings and specifications. 4.0 MODIFICATIONS AND AMENDMENT This document was prepared by the Engineer to communicate the basic intentions and expectations regarding the quality of materials and workmanship. Certain articles in this document may be revised with input from all parties, if so warranted based on project specific conditions. No modifications will be made without the Division’s approval. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 4 | 5.0 MISCELLANEOUS 5.1 Units – In this CQA Plan, and through the plans and specifications for this project, all properties and dimensions are expressed in U.S. units. 5.2 References – This CQA Plan includes references to the most recent version of the test procedures of the American Society of Testing and Materials (ASTM). Table 4D at the end of this text contains a list of these procedures. 6.0 INSPECTION, SAMPLING AND TESTING The requirements of the General Earthwork (perimeter embankments and subgrade) and Final Cover Systems (soil barrier, vegetative cover, and storm water management devices) differ with respect to continuous or intermittent testing and oversight. The following two sections are devoted to the specific requirements of each work task. 6.1 General Earthwork This section outlines the CQA program for structural fill associated with perimeter embankments, including sedimentation basins, and general grading of the subgrade. Issues to be addressed include material approval, subgrade approval, field control and record tests, if any, and resolution of problems. 6.1.1 Compaction Criteria – All material to be used as compacted embankment shall be compacted to a minimum of 95% of the Standard Proctor Maximum Dry Density (ASTM D-698), or as approved by the Engineer or designated QC/QA personnel. Specifically, field observation of the response of soils beneath equipment and the use of a probe rod and/or a penetrometer are other means of determining the adequacy of compaction. Skilled soil technicians working under the supervision of an engineer may make this determination, subject to concurrence by the engineer. Approval is based on visual evaluation for consistency with project specification and objectives. Such material evaluations may be performed either during material handling, i.e., delivery to or upon receipt at the landfill, or from existing stockpiles and/or the soil borrow site. Borrow soils shall be evaluated by the Engineer and QC/QA personnel prior to placement. All visual inspection and testing shall be documented. Where permeability is the key parameter of interest, field and/or lab tests will be used. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 5 | 6.1.2 Testing Criteria – Periodic compaction (moisture-density) testing requirements are imposed on the structural fill, although compaction and testing requirements may not be as stringent as that required for the final cover construction. Initial compaction testing shall be in accordance with the project specifications. The Engineer may recommend alternative compaction testing requirements based on field performance. Additional qualitative evaluations shall be made by the Contractor Superintendent and the Engineer to satisfy the performance criteria for placement of these materials. CQA monitoring and testing will not be “full-time” on this project. Rather, the CQA Testing Firm will test completed portions of the work at the Contractor’s or Owner’s request. The CQA Testing Firm may be called upon to test final cover and/or compacted structural fill at any time, ideally scheduling site visits to optimize his efforts. The Engineer will make an inspection at least monthly, more often as needed (i.e., the initial stages of new construction). 6.1.3 Material Evaluation – Each load of soil will be examined either at the source, at the stockpile area, or on the working face prior to placement and compaction. Any unsuitable material, i.e., that which contains excess moisture, insufficient moisture, debris or other deleterious material, will be rejected from the working face and routed to another disposal area consistent with its end use. Materials of a marginal natural, i.e., too dry or too wet, may be stockpiled temporarily near the working face for further evaluation by designated QC/QA personnel. The Contractor may blend such materials with other materials (in the event of dryness) or dry the materials (in the event of excess moisture). Soils designated for the upper 2 feet of subgrade within the cell shall consist of ML, MH, CL, CH, SM and mixed SM-ML classifications – this shall be confirmed with lab testing. 6.1.4 Subgrade Approval – Designated QC/QA personnel shall verify that the compacted embankment and/or subgrade are constructed in accordance with the project specifications prior to placing subsequent or overlying materials. These activities include an inspection of the subgrade by a qualified engineer, geologist, or soil technician working under the supervision of an engineer, which will examine and classify the soils within the upper two feet beneath the finished subgrade, with confirmatory sampling and laboratory gradation testing. The frequency of inspection and testing shall conform to Table 4A. 6.2 Earthwork Construction 6.2.1 Construction Monitoring – The following criteria apply: A. Earthwork shall be performed as described in the project specifications. The Construction Superintendent has the responsibility of assuring that only select materials are used in the construction, discussed above. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 6 | B. Only materials previously approved by the Engineer or his designee shall be used in construction of the compacted embankment. Unsuitable material will be removed and replaced followed by re-evaluation to the satisfaction of the Engineer and retesting, as may be required. C. All required field density and moisture content tests shall be completed before the overlying lift of soil is placed – as applicable. The surface preparation (e.g. wetting, drying, scarification, compaction etc.) shall be completed before the Engineer (or his designate) will allow placement of subsequent lifts. D. The CQA Testing Firm and/or the Engineer shall monitor protection of the earthwork, i.e., from erosion or desiccation during and after construction. 6.2.2 Control Tests – The control tests, as shown on Table A, will be performed by the CQA Testing Firm prior to placement of additional compacted embankment. 6.2.3 Record Tests – The record tests, as shown on Table A, will be performed by the CQA Testing Firm during placement of compacted embankment. The CQA Testing Firm may propose and the Engineer may approve an alternative testing frequency. Alternatively, the Engineer may amend the testing frequency, without further approval from the regulatory agency, based on consistent and satisfactory field performance of the materials and the construction techniques. 6.2.4 Record Test Failure – Failed tests shall be noted in the construction report, followed by documentation of mitigation. Soils with failing tests shall be evaluated by the Engineer (or his designee), and the soils shall either be recompacted or replaced, based on the Engineer’s judgment. Recompaction of the failed area shall be performed and retested until the area meets or exceeds requirements outlined in the specifications. 6.2.5 Judgment Testing – During construction, the frequency of control and/or record testing may be increased at the discretion of the CQA Testing Firm when visual observations of construction performance indicate a potential problem. Additional testing for suspected areas will be considered when:  Rollers slip during rolling operation;  Lift thickness is greater than specified;  Fill material is at an improper moisture content;  Fewer than the specified number of roller passes is made;  Dirt-clogged rollers are used to compact the material;  Rollers may not have used optimum ballast; Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 7 |  Fill materials differ substantially from those specified; or  Degree of compaction is doubtful. 6.2.6 Deficiencies – The CQA Testing Firm will immediately determine the extent and nature of all defects and deficiencies and report them to the Owner and Engineer. The CQA Testing Firm shall properly document all defects and deficiencies – this shall be more critical on the final cover construction, although this applies to structural fill, as well. The Contractor will correct defects and deficiencies to the satisfaction of the Owner and Engineer. The CQA Testing Firm shall perform retests on repaired defects. 6.3 Final Cover Systems This section outlines the CQA program for piping, drainage aggregate, geotextiles, compacted soil barrier layer, and the vegetative soil layer of the final cover system, as well as the related erosion and sedimentation control activities. Issues to be addressed include material approval, subgrade approval, field control and record tests, if any, and resolution of problems. 6.3.1 Material Approval – The Engineer and/or the CQA Testing Firm shall verify that the following materials (as applicable) are provided and installed in accordance with the project drawings, specifications, and this CQA Manual. In general, the Contractor shall furnished material specification sheets to the Engineer for review and approval. In certain cases, materials furnished by the Contractor may need to meet the Owner’s requirements, in which case the Owner shall approve of the materials with the Engineer’s concurrence. The materials approval process may involve the submittals furnished by the Owner, (for documentation purposes) in the event that the Owner decides to furnish certain materials. A. High Density Polyethylene (HDPE) Pipe (1) Receipt of Contractor's submittals on HDPE pipe. (2) Review manufacturer’s submittals for conformity with project specs. B. Corrugated Polyethylene (CPE) Pipe (1) Receipt of Contractor's submittals on CPE pipe. (2) Review manufacturer’s submittals for conformity with project specs. C. Aggregates (Verify for each type of aggregate) (1) Receipt of Contractor's submittals on aggregates. (2) Review manufacturer’s submittals for conformity with project specs. (3) Verify aggregates in stockpiles or borrow sources conform to project specifications. Certifications from a quarry will be sufficient. (4) Perform material evaluations in accordance with Table B. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 8 | D. Vegetative Soil Layer and Drainage Layer (1) Review manufacturer’s submittals for conformity with project specs. (2) Review contractor’s submittals on seed specifications. (3) Perform material evaluations in accordance with Table C. E. Compacted Barrier Layer (1) Review manufacturer’s submittals for conformity with project specs. (2) Conduct material control tests in accordance with Table C. F. Erosion and Sedimentation Control (1) Review Contractor's submittals on erosion and sedimentation control items (including rolled erosion control products and silt fence). (2) Review of submittals for erosion and sedimentation control items for conformity to the project specifications. (3) Perform visual examination of materials for signs of age or deterioration. 6.3.2 Final Cover Systems Installation – The CQA Testing Firm, in conjunction with the Engineer, will monitor and document the construction of all final cover system components for compliance with the project specifications, including the following:  Verify location of all piping;  Assuring sufficient vertical buffer between field equipment and piping;  Monitoring thickness and moisture-density of the final cover layers and verification that equipment does not damage the compacted barrier layer;  Assuring proper installation of sedimentation and erosion control measures. 6.3.3 Deficiencies – The CQA Testing Firm and/or the Engineer will immediately determine the extent and nature of all defects and deficiencies and report them to the Owner. The CQA Testing Firm and/or the Engineer shall properly document all defects and deficiencies. The Contractor will correct defects and deficiencies to the satisfaction of the Engineer. The CQA Testing Firm and/or the Engineer shall observe all retests. 7.0 CQA MEETINGS Effective communication is critical toward all parties’ understanding of the objectives of the CQA program and in resolving problems that may arise that could compromise the ability to meet those objectives. To that end, meetings are essential to establish clear, open channels of communication. The frequency of meetings will be dictated by site conditions and the effectiveness of communication between the parties. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 9 | 7.1 Project Initiation CQA Meeting A CQA Meeting will be held at the site prior to placement of the compacted barrier layer. At a minimum, the Engineer, the Contractor, and representatives of the CQA Testing Firm and of the Owner will attend the meeting. The purpose of this meeting is to begin planning for coordination of tasks, anticipate any problems that might cause difficulties and delays in construction, and, above all, review the CQA Manual to all of the parties involved. During this meeting, results of a prior compaction test pad and project specific moisture-density relationships will be reviewed. It is very important that the rules regarding testing, repair, etc., be known and accepted by all. The meeting should include all activities referenced in the project specifications. The Engineer shall document the meeting and minutes will be transmitted to all parties. 7.2 CQA Progress Meetings Progress meetings will be held between the Engineer, the Contractor, a representative of the CQA Testing Firm, and representatives from any other involved parties. Meeting frequency will be, at a minimum, once per month during active construction or more often if necessary during critical stages of construction (i.e., initial stages of final cover). These meetings will discuss current progress, planned activities for the next week, and any new business or revisions to the work. The Engineer will log any problems, decisions, or questions arising at this meeting in his periodic reports. Any matter requiring action, which is raised in this meeting, will be reported to the appropriate parties. The Engineer will document these meetings and minutes will be transmitted to interested parties and to a record file. 7.3 Problem or Work Deficiency Meetings A special meeting will be held when and if a problem or deficiency is present or likely to occur. At a minimum, the Engineer, the Contractor, the CQA Testing Firm, and representatives will attend the meeting from any other involved parties. The purpose of the meeting is to define and resolve the problem or work deficiency as follows:  Define and discuss the problem or deficiency;  Review alternative solutions; and  Implement an action plan to resolve the problem or deficiency. The Engineer will document these meetings and minutes will be transmitted to interested parties and to a record file. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 10 | 8.0 DOCUMENTATION AND REPORTING An effective CQA plan depends largely on recognition of which construction activities should be monitored and on assigning responsibilities for the monitoring of each required activity. This is most effectively accomplished and verified by the documentation of quality assurance activities. The CQA Testing Firm will provide documentation to address quality assurance requirements. Monitoring will not be continuous and full-time, although the CQA Testing Firm representative (typically this is a Soil Technician) and the Engineer will make frequent and periodic visits to inspect and/or test the work. Both parties shall keep records of their visits and observations. The Soils Technician will visit the site periodically (e.g., once per week) to document activities during placement of the structural fill and during final cover construction. Site visits by the CQA Testing Firm shall be coordinated between the Contractor and the CQA Testing Firm. The Engineer will make monthly site visits during these critical stages to review the work. The Construction Superintendent or his representative shall be present on-site daily and shall keep a record of the general construction progress, noting specifically any problems or inconsistencies that need to be brought to the Owner’s attention. The specifics of the Contractor’s records will not be spelled out, but at a minimum, daily or weekly progress records shall be kept and made available to the Owner upon request. The CQA Testing Firm will provide the Owner (or his designee) with periodic progress reports including signed descriptive remarks, data sheets, and logs to verify that required CQA activities have been carried out. These reports shall also identify potential quality assurance problems. The CQA Testing Firm will also maintain at the job site a complete file of project drawings, reports, project specifications, the CQA Plan, periodic reports, test results and other pertinent documents. The Owner shall furnish a location to keep this record file. 8.1 Periodic CQA Reports The CQA Testing Firm representative's reporting procedures will include preparation of a periodic report that will include the following information, where applicable:  A unique sheet number for cross referencing and document control;  Date, project name, location, and other identification;  Data on weather conditions;  A Site Plan showing all proposed work areas and test locations;  Descriptions and locations of ongoing construction; Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 11 |  Descriptions and specific locations of areas, or units, of work being tested and/or observed and documented;  Locations where tests and samples were taken;  A summary of test results (as they become available, in the case of laboratory tests);  Calibration or recalibration of test equipment, and actions taken as a result of recalibration;  Off-site materials received, including quality verification documentation;  Decisions made regarding acceptance of units of work, and/or corrective actions to be taken in instances of substandard quality;  Summaries of pertinent discussions with the Contractor and/or Engineer;  The Technician's signature. The periodic report must be completed by the end of each Technician's visit, prior to leaving the site. This information will keep at the Contractor’s office and reviewed periodically by the Owner and Engineer. The CQA Testing Firm on a weekly basis should forward copies of the Periodic CQA Reports electronically to the Engineer. Periodic CQA Reports shall be due to the Engineer no later than Noon on the next working day (typically Monday) following the end of a work week (typically Friday). If a periodic visit is postponed or cancelled, that fact should be documented by the CQA Testing Firm and noted in the next periodic report. 8.2 CQA Progress Reports The Engineer will prepare a summary progress report each month, or at time intervals established at the pre-construction meeting. As a minimum, this report will include the following information, where applicable:  Date, project name, location, and other information;  A summary of work activities during the progress reporting period;  A summary of construction situations, deficiencies, and/or defects occurring during the progress reporting period;  A summary of all test results, failures and retests, and  The signature of the Engineer. The Engineer's progress reports will summarize the major events that occurred during that week and shall include input from the Contractor and the CQA Testing Firm. Critical problems that occur shall be communicated verbally to the Engineer immediately (or as appropriate, depending on the nature of the concern) as well as being included in the Periodic CQA Reports. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 12 | 8.3 CQA Photographic Reporting Photographs shall be taken by the CQA Testing Firm at regular intervals during the construction process and in all areas deemed critical by the CQA Testing Firm. These photographs will serve as a pictorial record of work progress, problems, and mitigation activities. These records will be presented to the Engineer upon completion of the project. Electronic photographs are preferred; in which case the electronic photos should be forwarded to the Engineer (the CQA Testing Firm shall keep copies, as well). In lieu of photographic documentation, videotaping may be used to record work progress, problems, and mitigation activities. 8.4 Documentation of Deficiencies The Owner and Engineer will be made aware of any significant recurring nonconformance with the project specifications. The Engineer will then determine the cause of the non-conformance and recommend appropriate changes in procedures or specification. When this type of evaluation is made, the results will be documented, and the Owner and Engineer will approve any revision to procedures or specifications. 8.5 Design or Specification Changes Design and/or project specification changes may be required during construction. In such cases, the Contractor will notify the Engineer and/or the Owner. The Owner will then notify the appropriate agency, if necessary. Design and/or project specification changes will be made only with the written agreement of the Engineer and the Owner, and will take the form of an addendum to the project specifications. All design changes shall include a detail (if necessary) and state which detail it replaces in the plans. 9.0 FINAL CQA REPORT At the completion of each major construction activity at the landfill unit, or at periodic intervals, the CQA Testing Firm will provide final copies of all required forms, observation logs, field and laboratory testing data sheets, sample location plans, etc., in a certified report. Said report shall include summaries of all the data listed above. The Engineer will provide one or more final reports, pertinent to each portion of completed work, which will certify that the work has been performed in compliance with the plans and project technical specifications, and that the supporting documents provide the necessary information. The Engineer will provide Record Drawings, prepared with input from the Owner’s Surveyor, which will include scale drawings depicting the location of the construction and details pertaining to the extent of construction (e.g., depths, plan dimensions, elevations, soil component thicknesses, etc.). All final surveying required for the Record Drawings will be performed by the Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 13 | Owner’s Surveyor. The items shown below shall be included in the Final CQA Report(s). Note that some items may not be applicable to all stages of the project. FINAL CQA REPORT GENERAL OUTLINE (FINAL COVER SYSTEM) 1.0 Introduction 2.0 Project Description 3.0 CQA Program 3.1 Scope of Services 3.2 Personnel 4.0 Earthwork CQA 5.0 Final Cover System CQA 6.0 Summary and Conclusions 7.0 Project Certification Appendices A Design Clarifications/Modifications B Photographic Documentation C CQA Reporting C1. CQA Reports C2. CQA Meeting Minutes D Earthwork CQA Data D1. CQA Test Results - Control Tests D2. CQA Test Results - Record Tests E Final Cover System CQA Data E1. Manufacturer’s Product Data and QC Certificates E2. Test Results - Drainage Aggregate E3. Test Results - Vegetative Soil Layer E4. Test Results - Pressure Testing of HDPE Piping (Manufacturer data) E5. Test results on final cover compacted soil barrier/low permeability layer F Record Drawings F1. Subgrade As Built F2. Compacted soil barrier/low permeability layer as-built drawing F3. Vegetative Soil Layer As Built Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 14 | Each CQA report shall bear the signature and seal of the Engineer (or multiple Engineers as applicable), attesting that the construction was completed in accordance with the CQA plan, the conditions of the permit to construct, the requirements of the North Carolina Solid Waste Rules, and acceptable engineering practice. 10.0 STORAGE OF RECORDS All handwritten data sheet originals, especially those containing signatures, will be stored in a secure location on site. Other reports may be stored by any standard method, which will allow for easy access. All written documents will become property of the Owner. 11.0 PROTECTION OF FINISHED SURFACES The only relevant systems exposed after construction will be the finished slopes, including both interior and exterior slopes, various drainage systems, and the subgrade. Ground cover shall be established on all finished surfaces shall to prevent erosion, i.e., seeding of the finished surfaces within 20 days, per NC DEQ Division of Energy, Mineral and Land Resources rules, or other measures for preventing erosion (e.g., mulch, rain sheets). Maintenance of finished slopes and subgrade until waste is placed is required. Exterior slopes shall be vegetated in accordance with application sediment and erosion control regulations. The Engineer shall document that the finished surfaces are adequately protected upon completion, and said documentation shall be recorded in the CQA report. The Owner/Operator shall be responsible for maintaining the finished surfaces, including exterior slope vegetation and drainage conveyances, along with the interior slopes and subgrade. If finished surfaces within the waste disposal area will be required to sit completed for more than 30 days following completion, the Engineer shall examine the finished surfaces prior to waste disposal and the Owner shall be responsible for any necessary repairs, e.g., erosion that might affect embankment integrity or vertical separation with a subgrade. The Engineer shall document any required maintenance or repairs prior to commencing disposal activities, placing said documentation into the Operating Record. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 15 | TABLE A CQA TESTING SCHEDULE FOR GENERAL EARTHWORK PROPERTY TEST METHOD TEST FREQUENCY CONTROL TESTS: Consistency Evaluation ASTM D 2488 (visual)1 Each Material RECORD TESTS: Lift Thickness Direct Measure Each compacted lift In-Place Density ASTM D 29222 20,000 ft2 per lift Moisture Content ASTM D 30173 20,000 ft2 per lift Subgrade Consistency within the upper 24 inches4 Visual 4 tests per acre Subgrade Consistency within the upper 24 inches4 ASTM D 422 ASTM D 4318 1 test per acre Notes: 1. To be performed by Contractor Superintendent, Engineer, or CQA Testing Firm. Direct measure shall be facilitated with hand auger borings. 2. Optionally use ASTM D 1556, ASTM D 2167, or ASTM D 2937. For every 10 nuclear density tests perform at least 1 density test by ASTM D 1556, ASTM D 2167, or ASTM D 2937 as a verification of the accuracy of the nuclear testing device. Minimum required soil density is 95 percent of the standard proctor maximum dry density, which is dependent on the moisture-density characteristic developed for the specific soil during initial construction; lower density or incorrect moisture results in a failed test and the lift must reworked and retested. 2a. If “beneficial fill” materials are used to construct embankments or structural fill, the Contractor shall spread large particles evenly and fill all voids with finer soil – this is referred to as “choking off” the voids; density testing shall be suspended at the discretion of the Engineer, but judgment testing shall be applied and the use of these materials and evaluation thereof shall be documented as would any other soil placement activity 3. Optionally use ASTM D 2216, ASTM D 4643, or ASTM D 4959. For every 10 nuclear density- moisture tests, perform at least 1 moisture test by ASTM D 2216, ASTM D 4643, or ASTM D 4959 as a verification of the accuracy of the nuclear testing device. 4. Subgrade evaluation shall be conducted via continuous inspection with the indicated testing frequency, in order to evaluate the full 24 inch depth, of an intrusive investigation (e.g., hand auger borings) may be performed after portions of the subgrade are completed with the indicated testing frequency – all testing locations, testing types and test results shall be recorded on a site map and made part of the construction record Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 16 | TABLE B CQA TESTING SCHEDULE FOR DRAINAGE AND FINAL COVER MATERIALS COMPONENT PROPERTY TEST METHOD TEST FREQUENCY RECORD TESTS: Gas Vent Pipes and Stone Correct type, grade and placement for pipes; correct gradation and trench dimensions for collection stone* Visual Each Vent Coarse Aggregate: Confirm Gradation Visual 5,000 CY1 Vegetative Soil Layer: (In-Situ Verification) Visual Classification ASTM D 2488 1 per acre Layer Thickness Direct measure Survey4 Notes: 1. A quarry certification is acceptable for aggregate from a commercial quarry. If a byproduct is used, i.e., crushed concrete aggregate, the gradation test frequency may be adjusted based on project specific conditions. The Engineer shall approve all materials and alternative test frequencies. Materials that do not meet relevant ASTM or ASHTO standard gradation specifications (either may be used at the discretion of the Engineer) shall be rejected. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 17 | TABLE C CQA TESTING SCHEDULE FOR FINAL COVER COMPACTED SOIL BARRIER PROPERTY TEST METHOD TEST FREQUENCY RECORD TESTS: Lift Thickness Direct measure Survey4 Permeability ASTM D50841 1 per acre per lift In-Place Density ASTM D 29222 4 per acre per lift Moisture Content ASTM D 30173 4 per acre per lift Direct Shear Friction Test ASTM D 53215 1 per acre Notes: 1. Optionally use ASTM D6391. Maximum confining pressure for laboratory testing under ASTM D5084 is 20 psi; maximum gradient is 10; actual confining pressure and gradient values shall be at the discretion of the engineer in charge of the CQA program. Maximum allowable soil permeability is 1 x 10-5 cm/sec; higher perms results in a failed test and the lift must be reworked and retested. 2. Optionally use ASTM D 1556, ASTM D 2167, or ASTM D 2937. For every 10 nuclear density tests perform at least 1 density test by ASTM D 1556, ASTM D 2167, or ASTM D 2937 as a verification of the accuracy of the nuclear device. Minimum required density is dependent on the moisture- density-permeability characteristic developed for the specific soil during initial construction; lower density or incorrect moisture may result in higher permeability. Permeability criteria shall govern the determination of a passing test. 3. Optionally use ASTM D 2216, ASTM D 4643, or ASTM D 4959. For every ten nuclear-moisture tests, perform at least 1 moisture test by ASTM D 2216, ASTM D 4643, or ASTM D 4959 as a verification of the accuracy of the nuclear testing device. 4. Topographic survey to be performed by licensed surveyor, observing the following technical specifications to confirm that the minimum thickness of each proposed final cover component is constructed according to the Rule 15 NCAC 13B .0543. Each of the following layers shall be documented with individual surveys: a) The top elevations of the final intermediate soil cover layer. b) The top elevations of the final compacted soil liner layer. c) The top elevations of the final vegetation cover layer. The survey shall be performed on a regular grid – ideally the same point locations would be used for each successive layer, based on the original construction grid; locations of each data point shall be measured to a minimum accuracy of 0.01 feet on the horizontal and vertical; any stakes placed on the slopes shall be removed and the holes backfilled with soil that is similar to the layer of interest; 5. Backfill soil shall be placed in maximum 9 inch thick loose lifts and compacted to approximately 6 inches thickness with a hand tamp; lifts shall be measured directly down-hole with a stick or tape measure; the as-built drawings for each layer shall be drawn as a thickness isopach map, with the same 0.01 foot vertical accuracy. 6. Testing protocols may be altered at the Engineer’s discretion, providing minimum standards of practice are observed and the regulatory requirements are met. Gold Hill Road CDLF (Permit 76-06) Contruction Quality Assurance Plan | 18 | TABLE D REFERENCE LIST OF ASTM TEST METHODS ASTM C 136 Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates. ASTM D 422 Standard Test Method for Particle Size Analysis of Soils. ASTM D 698 Test Method for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3). ASTM D 1556 Standard Test Method for Density and Unit Weight of Soil in Place by the Sand-Cone Method. ASTM D 2167 Standard Test Method for Density and Unit Weight of Soil in Place by the Rubber Balloon Method. ASTM D 2216 Standard Test Method for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass. ASTM D 2488 Standard Practice for Description and Identification of Soils (Visual-Manual Procedure). ASTM D 2922 Standard Test Methods for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth). ASTM D 2937 Standard Test Method for Density of Soil in Place by the Drive Cylinder Method. ASTM D 3017 Standard Test Method for Water Content of Soil and Rock in Place by Nuclear Methods (Shallow Depth). ASTM D 4318 Standard Test Method for Liquid Limit, Plastic Limit, and Plasticity Index of Soils. ASTM D 4643 Standard Test Method for Determination of Water (Moisture) Content of Soil by the Microwave Oven Method. ASTM D 4959 Standard Test Method for Determination of Water (Moisture) Content of Soil by Direct Heating Method. ASTM D5084 Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter ASTM D 5993 Standard Test Method for Measuring Mass per Unit of Geosynthetic Clay Liners. ASTM D6391 Standard Test Method for Field Measurement of Hydraulic Conductivity Limits of Porous Materials Using Two Stages of Infiltration from a Borehole ASTM D 6768 Standard Test Method for Tensile Strength of Geosynthetic Clay Liners. ASTM D 5321 Standard Test Method for Determining the Coefficient of Soil and Geosynthetic or Geosynthetic and Geosynthetic Friction by the Direct Shear Method Appendix 5 Operations Plan Update Gold Hill Road CDLF (Permit 76-06) Operations Plan Update | | Operations Plan Update Gold Hill Road C&D Landfill Solid Waste Permit 7606-CDLF-2001 Submitted to: NCDEQ Division of Waste Management Solid Waste Section 217 W Jones Street Raleigh, NC 27603 Presented To: Morton and Sewell Land Company, LLC 385 Gold Hill Road Asheboro, North Carolina 27203 Presented By: SCS ENGINEERS 322 Chapanoke Road, Suite 101 Raleigh, NC 27603 (919) 662-3015 March 8, 2016 File No. 02214705.00 Gold Hill Road CDLF (Permit 76-06) Operations Plan Update i Table of Contents Section Page PART 1 – GENERAL OPERATIONS ...................................................................................................... 1  1.0 OVERVIEW ................................................................................................................................... 1  1.1 Site Plan .............................................................................................................................. 1  1.2 Location and Surroundings .............................................................................................. 1  1.3 Service Area ...................................................................................................................... 1  1.4 Waste Stream Characteristics ........................................................................................ 2  1.5 Hours of Operation .......................................................................................................... 2  1.6 Contact Information .......................................................................................................... 2  1.6.1 Emergencies ......................................................................................................... 2  1.6.2 Morton and Sewell Land Company, LLC Administrative Offices .............. 2  1.6.3 North Carolina Department of Environmental Quality ................................ 2  1.7 Permitted Activities ........................................................................................................... 3  2.0 FACILITY DESCRIPTION .............................................................................................................. 4  2.1 Processing Facility ............................................................................................................. 4  2.2 CDLF .................................................................................................................................... 4  2.3 Facility Drawings ............................................................................................................... 5  3.0 ROUTINE OPERATION ............................................................................................................... 5  3.1 Staff Responsibilities ........................................................................................................ 5  3.2 Inspections and Maintenance .......................................................................................... 5  4.0 ACCESS CONTROL ..................................................................................................................... 7  4.1 Physical Restraints ............................................................................................................. 7  4.2 Security ............................................................................................................................... 7  4.3 All-Weather Access .......................................................................................................... 7  4.4 Traffic .................................................................................................................................. 7  4.5 Anti-Scavenging Policy .................................................................................................... 7  4.6 Signage .............................................................................................................................. 7  4.7 Communications ................................................................................................................. 7  4.8 Waste Screening ............................................................................................................... 7  5.0 FIRE AND SAFETY ........................................................................................................................ 8  5.1 Fire Prevention ................................................................................................................... 8  5.2 Fire Control ........................................................................................................................ 8  5.3 Personal Safety ................................................................................................................. 8  6.0 OTHER REGULATORY REQUIREMENTS ................................................................................... 9  6.1 Sedimentation and Erosion Control ................................................................................ 9  6.2 Water Quality (Storm Water) Protection .................................................................... 9  6.3 Minimizing Surface Water Contact ............................................................................... 9  6.4 Processing Facility Operation over the CDLF ........................................................... 10  6.5 Equipment Maintenance ................................................................................................ 10  6.6 Utilities .............................................................................................................................. 10  6.7 Vector Control ................................................................................................................ 11  6.8 Air Quality Criteria ....................................................................................................... 11  6.9 Litter Control ................................................................................................................... 12  Gold Hill Road CDLF (Permit 76-06) Operations Plan Update ii 7.0 OPERATING RECORD .............................................................................................................. 12  8.0 ANNUAL REPORT ...................................................................................................................... 13  9.0 CONTINGENCY PLAN ............................................................................................................. 13  9.1 Hot Loads Contingency ................................................................................................. 13  9.2 Hazardous Waste Contingency .................................................................................. 14  9.3 Severe Weather Contingency ..................................................................................... 14  9.3.1 Ice Storms ........................................................................................................... 15  9.3.2 Heavy Rains ....................................................................................................... 15  9.3.4 Electrical Storms ................................................................................................ 15  9.3.5 Windy Conditions ............................................................................................. 15  9.3.4 Violent Storms ................................................................................................... 15  PART 2 – PROCESSING (RECYCLING) FACILITY ........................................................................... 16  10.0 OVERVIEW ................................................................................................................................. 16  10.1 Acceptable Wastes ...................................................................................................... 16  10.2 Prohibited Wastes ........................................................................................................ 16  10.3 Waste Processing ......................................................................................................... 16  10.4 Waste Receiving and Screening ................................................................................ 17  10.5 LCID Processing ............................................................................................................. 17  10.6 C&D Processing ............................................................................................................. 18  10.7 Disposal of Rejected Wastes ..................................................................................... 18  10.8 Processing of Finishing Goods .................................................................................... 18  10.9 Maximum Stockpile Size ............................................................................................. 19  10.10 Maximum Processed Material Storage Volumes ................................................... 19  10.11 Asphalt Shingle Storage for Recycling .................................................................... 20  PART 3 – CDLF OPERATION .............................................................................................................. 22  11.0 Waste Acceptance Criteria .................................................................................................... 22  11.1 Permitted Wastes ......................................................................................................... 22  11.2 Asbestos .......................................................................................................................... 22  11.3 Wastewater Treatment Sludge ................................................................................. 22  11.4 Waste Exclusions........................................................................................................... 22  12.0 WASTE HANDLING PROCEDURES ........................................................................................ 23  12.1 Waste Receiving and Inspection ................................................................................ 23  12.2 Disposal of Rejected Wastes ..................................................................................... 24  13.0 C&D DISPOSAL PROCEDURES ............................................................................................... 24  13.1 Spreading and Compaction ....................................................................................... 25  13.2 Special Wastes: Asbestos Management ................................................................. 25  14.0 COVER MATERIAL ..................................................................................................................... 25  14.1 Periodic Cover............................................................................................................... 25  14.2 Interim Soil Cover ......................................................................................................... 26  14.3 Final Cover ..................................................................................................................... 26  15.0 SURVEY FOR COMPLIANCE ................................................................................................... 27  15.1 Height Monitoring ......................................................................................................... 27  15.2 Annual Survey ............................................................................................................... 27  16.0 CONTINGENCY PLAN ............................................................................................................. 27  17.0 ANNUAL REPORTING .............................................................................................................. 27  Gold Hill Road CDLF (Permit 76-06) Operations Plan Update iii Tables 1 PROHIBITED WASTES FOR PROCESSING ...................................................................... 21  2 PROHIBITED WASTES IN THE CDLF UNIT ............................................................... 28  Attachments A Hazardous Waste Responders B Waste Screening Form C Shingles Processing and Storage D Fire Notification Form Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 1 PART 1 – GENERAL OPERATIONS 1.0 OVERVIEW 1.1 Site Plan The facility consists of a permitted landfill located on a 66-acre tract, which is isolated by natural barriers such as creeks and wooded tracts. Adequate on-site soil resources are available to meet the operational needs of the CDLF. The landfill is a permitted reclamation activity that will restore the property to a usable condition for future development. Recycling activities are required as a condition of the Franchise Agreement with local government. The facility contains both C&D processing and disposal areas, with recycling activities taking place near the working face, an adjacent LCID processing area (no disposal) and a concrete processing area and stockpile. 1.2 Location and Surroundings The facility is located with the eastern limit of the City of Asheboro, in Randolph County, North Carolina. The site has two access points off of Gold Hill Road. The facility main entrance is located at 385 Gold Hill Road and is an aggregate road surface, accessible from I-74 via East Presnell Street. Gold Hill Road is paved and has a 55-mph posted speed limit. The scales, a scale house, a waste inspection area, and a mulch processing/commercial sales area are located near the main entrance. All waste hauling trucks entering the facility are weighed upon entering and existing. Loads are identified and assigned to the proper processing or disposal units at the scale house. The second entrance is also a gravel road intended for facility personnel access only and intended for use for facility maintenance operations. Both entrances have gates that are securely locked during non-operation hours. There are presently no residences, farms, or commercial structures on site. The site is bordered on the east by Gold Hill Road, the south by East Presnell Street, the west by Penwood Branch South Tributary, and to the north by private landowners. 1.3 Service Area In accordance with the Franchise Agreement with the City of Asheboro, the service area for the C&D processing and disposal operations at the Gold Hill Road Landfill include the following Counties:  Randolph,  Guilford,  Alamance,  Chatham,  Moore,  Montgomery, and  Davidson. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 2 1.4 Waste Stream Characteristics The Gold Hill Road facility will accept LCID and C&D wastes for disposal as defined by NC DEQ Division of Waste Management definitions. No liquid waste, hazardous wastes or Municipal Solid Waste will be accepted for disposal. Any material received at the site that cannot be process or disposed will be removed from the site and disposed of at a suitable location. LCID brought to the facility will either be process in accordance with the approved Operation Plan or disposed in the C&D unit. No separate disposal area for LCID will be maintained once the combined disposal unit is in operation. C&D will be accepted for processing, reuse or disposal from private contractors, local governments, and individual residents with the service area. The facility anticipates that approximate 80 percent of the C&D waste stream will come from commercial sources (i.e., demolition contractors, general contractors, home builders, etc.) with the remaining 20 percent generated by local government and residents. C&D disposal rates vary considerably on a monthly basis. The facility has entered into a franchise agreement with the City of Asheboro that allows disposal of up to 125 cubic yards per calendar day. Based on previous years the rate of compaction has been calculated to be approximately 1.8 cubic yards per ton of C&D which would be approximately 70 tons of C&D waste per calendar day. The facility will maintain the 125 cubic yards (70 tons) per calendar day as the maximum receivable rate. 1.5 Hours of Operation The facility is open to the public from 7 AM to 5 PM on Monday – Friday and 8 AM to 12 PM on Saturday. All current operations for the facility are within those hours. 1.6 Contact Information 1.6.1 Emergencies For fire, police, or medical/accident emergencies dial 911. 1.6.2 Morton and Sewell Land Company, LLC Administrative Offices Mr. Al Morton – Managing Member Morton and Sewell Land Company, LLC 385 Gold Hill Road Asheboro, NC 27203 Tel. 336-629-7175 1.6.3 North Carolina Department of Environmental Quality Division of Waste Management - Solid Waste Section Winston-Salem Regional Office 450 West Hanes Mill Road, Suite 300 Winston-Salem, NC 27105 Tel. 336-776-9800 Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 3 1.7 Permitted Activities The following is a comprehensive summary of the permitted solid waste activities within the 66- acre facility: Activities conducted under Permit #76-06 (Processing Facility):  Receipt of wood wastes and inert debris (C&D and LCID)  Sorting recyclables, shredding or grinding the wastes*  Removal of incidental non-compliant wastes**  Production of mulch, boiler fuel, aggregates***  Temporary storage of products in stockpiles Activities conducted under Permit #76-06 (CDLF disposal unit):  Disposal of construction and demolition debris  Disposal of asbestos wastes in a designated area *Primary recyclables include aggregates, wood wastes, and metals; aggregates derived from the two sources may be combined, wood wastes derived from the two sources may be blended for fuel; typically the C&D wastes are better suited for boiler fuel, LCID wastes are better suited for mulching, thus the two waste streams are typically not blended; no other blending shall occur **Includes MSW and other non-C&D wastes that inadvertently enter the C&D waste stream at construction sites – these materials will be placed in roll-off boxes and taken to the nearby MSW transfer station on a weekly basis; no MSW disposal shall occur at this facility ***Materials typically will be distributed off-site, but some on-site use of mulch outside of the active C&D unit will occur (with limitations on application rates), and aggregates may be used on-site; all non-fuel wood wastes processed at the facility will be considered as mulch – not compost – with no nutrient value All sorting and grinding activities will take place within the CDLF footprint or within an approved area adjacent to the footprint. Finished goods may be stored outside the CDLF footprint within designated areas (approved for mining disturbance) that have drainage control. No processing or disposal activities shall occur within designated stream buffers, wetlands, or the 100-year floodplain. All activities and areas are accessible to the public only via a single gate and are secure after hours. Each permitted activity is described in brief detail in Section 2. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 4 2.0 FACILITY DESCRIPTION 2.1 Processing Facility The Owners of the facility intend to accept appropriate C&D and LCID wastes for recycling into boiler fuel, mulch, aggregates, and reclaimed of metals. All C&D materials shall be weighed and recorded, with accurate accounting to account for material flow. Intake materials may be sorted within the approved CDLF footprint, separated from the active working face by a safe distance, or within the designated processing area located outside the footprint (see Site Plan drawings). Public access to the processing area and working face is restricted – C&D unloading, processing and disposal areas are to be separated by approximately 50 feet – and the LCID processing area will be separate from the C&D processing facility. The tipping and processing areas have runoff control measures that integrate into the main storm water system but can be isolated in the event of a spill of fuel, oil, or hazardous materials. Operations shall be scheduled around the weather to minimize contact between the waste and water – no grinding of C&D wastes shall take place in the rain. Materials shall be sorted and placed in stockpiles not exceeding 100-cubic yards, separated by a minimum of 25 feet to allow access for firefighting. Alternatively, processed materials may be stored in trailers or roll-off boxes, at the operator’s discretion. Recyclables normally will be processed within a day or two of receipt, stored outside the footprint, and shipped to appropriate receiving facilities on a weekly basis. The intake stockpile is typically kept under 6,000 cy. Recyclable C&D materials shall be shipped to established markets, e.g., boiler fuel and metals; aggregates will be ground and sold or used on the premises in a beneficial manner. Non- recyclable C&D wastes shall be disposed within the on-site C&D disposal facility. A separate, roll-off box shall be kept on-hand for inadvertent non-C&D wastes (MSW) that may come into the facility, which will be taken to a nearby MSW transfer station or other approved disposal facility on a weekly basis. Finished materials shall be removed (or turned) at least quarterly, except for aggregates. 2.2 CDLF Phase 1 and Phase 2 are an unlined landfill encompassing 20.27 acres, based on the current Permit to Operate approved February 17, 2014. Phase 1 occupies 11.94 acres; Phase 2 occupies 8.33 acres. Phase 1 currently operates as the LCID disposal area, and Phase 2 operates as the CDLF. Perimeter berms for the disposal cells are designed to prevent surface water from land adjacent to the cell from entering active operations areas. Additional structures such as swales and ditches direct water away from the CDLF. Where the disposal areas are closed, both Phases 1 and 2 are designed to drain toward large perimeter channels, which in turn lead to the main sedimentation basin. All measures were designed in accordance with 15A NCAC 4 and were approved by the NC DEQ Division of Land Resources. The limits of Phases 1 and 2 are clearly staked with permanent markers. The active LCID area (Phase 1) will be mined and the permitted base grade condition will be confirmed and recertified. As Phase 1 is recertified for operation the closure of the existing CDLF will also be incremental, conducted in accordance with the approved Closure/Post- Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 5 Closure Plan. Financial Assurance requirements will be adjusted on a yearly basis to account for new areas opening and those being closed. Operation of the C&D Landfill will be in accordance with Solid Waste rules. A Ground Water Monitoring Plan has been approved by the SWS. All requirements, for sedimentation and erosion control apply, as do NC DEQ storm water rules. 2.3 Facility Drawings A copy of the approved Facility Plan and construction drawings must be kept on-site at all times. Several sets of drawings submitted to various agencies exist, e.g., local government site plan approval, the mining permit application and solid waste applications; revisions have occurred over time. The Engineer should be consulted to resolve conflicts between drawings. The enclosed drawing set is current for the Gold Hill Road facility and the Phases 1 and 2 CDLF waste placement sequence with respect to the Solid Waste permit. The Owner/Operator shall note the location of the active working face on the facility plan, noting areas that have come to final grade and areas that are closed – the map shall be updated continuously and filed with the Operating Record (Section 7). The drawings show the locations of special waste disposal areas (i.e., asbestos), soil borrow and stockpile areas. 3.0 ROUTINE OPERATION 3.1 Staff Responsibilities Every staff member shall receive instruction on “preventative maintenance” pertaining to ground water and surface water quality, and how to protect these features, in addition to waste acceptance criteria and operational requirements that pertain to each individual’s specific duties. The critical importance of preserving environmental quality and maintaining operational compliance should be a topic for discussion at regular staff meetings, along with issues concerning safety and efficient operation of the facility. Each worker should understand that the overall compliance of the facility affects not only their position at the facility but the future ability to continue operations beyond the next permit review. All staff should be vigilant about enforcing the waste acceptance policy and to make sure that all aspects of the operation, from mowing the grass to the daily transfer or disposal of waste, are conducted in an environmentally sound manner. In accordance with Rule .0542 (j) (2) a trained operator must be on duty at all times when the facility is open to the public and/or when operations are being conducted. All training should be documented and Operator’s certifications shall be kept current. 3.2 Inspections and Maintenance The following O&M schedule highlights some, but not all, of the major requirements for routine facility inspection and maintenance at both the recycling facility and the CDLF. This schedule is intended to serve as a guide for the Owner/Operator for addressing short-term and long-term issues, but the O&M schedule does not alleviate the Owner/Operator of key rule requirements, whether or not they are covered here. Of particular emphasis, the Owner/Operator should adhere to the following: Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 6  Collect trash and windblown debris around the scale, buildings, and areas outside the working face daily per Rule 15 NCAC 13B .0542 (g) (3).  Note the date and time of cover placement (periodic and interim covers) in the operating record in compliance with Rule .0542 (f) (2). The following tabulated summary for normal operations and hereby replaces the O&M Checklist presented in the previous permit application: Daily  Remove any Trash or Debris at Facility Entrance, Scales, Driveways, Ditches  Remove any Trash or Debris around CDLF and Processing Areas, including Trees  Check for Windblown Debris Escaping CDLF Working Face  Verify All Waste Intake Processed and/or Disposed within 48 hours  Verify Working Face under One-Half Acre (150 x 150 feet)  Check Finished Goods Stockpiles for Foreign Materials or Trash  File Waste Inspection Forms (Minimum 3 per Week) Weekly  Verify Working Face is Covered Weekly  Verify Access Roads are Passable  Check for Spills or Leaks on Roads, Processing Areas, and Working Face  Verify that Inactive Disposal Areas are Covered per Solid Waste Rules  Check for Proper Drainage Conditions, Erosion, Sediment Buildup  Inspect Gates, Locks, Fences, Signs  Check Communication and Surveillance Equipment  Check Mulch Stockpile Size (should be under 6000 cy) Monthly  Check for Excess Erosion on Slopes or Benches and Ditches  Verify Vegetation is Healthy on Slopes, Ditches and Shoulders  Verify that Sediment Basin Primary Outlet is Draining within 5 Days Semi-Annually  CDLF Slope Vegetation Mowed (Minimum Twice per Year)  Inspect for CDLF Slopes Cracking, Sloughing, Bulging, Excess Erosion  Turn or Remove Finished Mulch Stockpiles (Minimum Twice per Year)  Mow Clear Access Paths to Monitoring Wells Annually  Verify Staff Training Certifications are Up to Date  Complete Annual Topographic Survey of CDLF Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 7 4.0 ACCESS CONTROL 4.1 Physical Restraints The site is accessible to the public by the single entrance gate. All customers and visitors shall check upon arrival; all incoming waste-hauling vehicles shall cross the scales. An additional entrance is available for facility personnel access only and is intended for facility maintenance operations. The entrance gates will be securely locked during non-operating hours. 4.2 Security Frequent inspections of gates and fences will be performed by landfill personnel. Evidence of trespassing, vandalism, or illegal operation will be reported to the Owner. 4.3 All-Weather Access On-site roads will be maintained for all-weather access. 4.4 Traffic The Operator shall direct traffic to a waiting area, if needed, and onto the working face with safe access when an unloading site is available. Once a load is emptied, the delivery vehicle will leave the working face immediately. 4.5 Anti-Scavenging Policy The removal of previously deposited waste by members of the public (or the landfill staff) is strictly prohibited by the Division for safety reasons. The Operator shall enforce this mandate and discourage loitering after a vehicle is unloaded. No one unaffiliated with the landfill or having business at the facility shall be allowed onto the working face. 4.6 Signage A prominent sign containing the information required by the Division shall be placed just inside the main gate. This sign will provide information on operating hours, operating procedures, and acceptable wastes. Additional signage will be provided within the landfill complex to distinctly distinguish access routes. Restricted access areas will be clearly marked and barriers (e.g., traffic cones, barrels, etc.) will be used. 4.7 Communications Visual and radio communications will be maintained between the scale house and field staff. The scale house has telephones in case of emergency and for the conduct of day-to-day business. Emergency telephone numbers (Fire and Rescue) are displayed in the scale house. 4.8 Waste Screening Refer to Section 10.4. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 8 5.0 FIRE AND SAFETY 5.1 Fire Prevention Measures shall be taken to prevent fires in the raw materials and finished goods stockpiles in the processing facility. Stockpiles (and the disposal area) shall be inspected daily for signs of smoke or combustion. The piles shall be separated by a minimum distance of 25 feet for access. At a minimum, any accumulated piles of combustible materials shall be limited to 6,000 cy in size and turned on a quarterly basis or when dictated by temperature. The piles shall be monitored for dryness and temperature – a temperature probe shall be acquired and kept in the office – maximum allowable temperatures shall be 120 degrees Fahrenheit. 5.2 Fire Control Fires in landfills and stockpiles (especially LCID facilities) have been a regulatory concern in recent times. The possibility of fire within the landfill or a piece of equipment must be anticipated. A combination of factory installed fire suppression systems and/or portable fire extinguishers shall be kept operational on all heavy pieces of equipment. Brush fires within the waste may be smothered with soil, if combating the fire poses no danger to the staff. The use of water to combat the fire is allowable, but soil is preferable. For larger or more serious fire outbreaks, the local fire department will respond. In the event of any size fire at the facility, the Owner shall contact NC DEQ Division Waste Management personnel within 24 hours and complete a Fire Notification Form (Attachment D) within 15 days for the Operating Record. 5.3 Personal Safety Safety is a key concern with the operation of this facility. All aspects of operation were planned with the health and safety of the landfill's operating staff, customers, and neighbors in mind. Prior to commencing operations, a member of the management staff will be designated as Site Safety Officer. This individual, together with the Facility's management will modify the site safety and emergency response program as needed to comply with Occupational Safety and Health Administration (OSHA) guidance. Staff safety meetings (minimum one per month) shall be conducted. Safety equipment to be provided includes (at a minimum) equipment rollover protective cabs, seat belts, audible reverse warning devices, hard hats, safety shoes, and first aid kits. Field operators will be encouraged to complete the American Red Cross Basic First Aid Course with CPR. The working face of a landfill is an inherently dangerous place due to the movement of heavy equipment, steep slopes, obstacles to pedestrian movement and sometimes poor visibility (such as equipment backing up). These considerations are also a concern for the sorting and grinding operations, as well as the concern for flying debris that can be ejected from a tub grinder. Safety for customers will be promoted by the Operator and his staff knowing where the equipment and customer vehicles are moving at all times. Radio communications between the scale house and the field staff will help keep track of the location and movement of customers. The processing areas (C&D and LCID) shall be located no closer than 50 feet to the working face of the CDLF disposal unit. Signs, fences and/or physical barriers will be used to separate Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 9 public access areas from the working face of the CDLF and the waste processing areas (sorting, grinding, etc.) – activities that could endanger the public shall not be conducted when non- employees are present. Vehicles transporting waste to the facility and/or the general public shall not have access to the working face. Children under the age of 16 shall not be allowed in the facility. No waste unloading, grinding or disposal activities shall be conducted after dark. 6.0 OTHER REGULATORY REQUIREMENTS 6.1 Sedimentation and Erosion Control All aspects of the facility operation are subject to the requirements of 15A NCAC 4, the Sedimentation and Erosion Control rules. Runoff measures for this facility were designed in accordance with this rule and approved by the NC DEQ Land Quality Section, as a condition of the mining permit. Approved S&EC measures shall be installed and maintained throughout the operational life of the facility and into the post-closure period. Measures to curtail erosion include vegetative cover and woody mulch as ground cover. Measures to control sedimentation include stone check dams in surface ditches, sediment traps and basins. As of March 2013, all exposed soils, regardless of whether they are inside or outside the disposal area, shall be vegetated or otherwise stabilized within 15 days after any given area is brought to final grade. 6.2 Water Quality (Storm Water) Protection This facility does not require coverage under a NC DEQ Division of Water Resources Storm Water General Permit. A Storm Water Pollution Prevention Plan should be prepared for the facility, which would describe steps to protect water quality, e.g. diversion of surface water (“run-on”) away from the disposal area, allowing no impounded water inside the disposal area, and avoiding the placement of solid waste into standing water, and which would be incorporated into the daily operation of the facility. The facility is obligated by law not to discharge pollutants into the waters of the United States (i.e. surface streams and wetlands). Any discharges should be mitigated immediately and reported to NC DEQ Division of Water Resources. 6.3 Minimizing Surface Water Contact Protection of water quality is a key interest in the operation of this facility. Although C&D wastes are typically inert, there can be chemical residues present in the C&D (e.g., solvents) that can mobilize upon contact with water – i.e., leachate generation – and which can enter the environment via storm water runoff. This tends to be more prevalent when the wastes are processed (sorted and ground) due to increased surface area available to contact the water source and increased exposure to ambient conditions. Whereas the tipping and processing areas will be uncovered, the C&D processing facility shall not be operated during rain events in order to minimize contact between the waste and surface water, thus minimizing leachate generation. Activities pertaining to the processing facility should be scheduled to accommodate the weather forecast. During periods of light rain unloading may occur and sorting operations may occur if no runoff is visible, but no grinding shall occur. During heavy rain (with visible runoff) or periods of high wind the incoming (unprocessed) materials shall be stockpiled and covered with tarps (secured against wind) or Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 10 incorporated into the working face to minimize contact with water. Processed materials and including source-sorted loads shall be placed in covered transport trailers or roll-off boxes. 6.4 Processing Facility Operation over the CDLF The Processing Facility (tipping, sorting, loading) activities will move within the C&D footprint to be near the working face of the CDLF unit, albeit a safe distance shall be maintained – minimum of 50 feet – to promote safety of workers and the public (Section 5.3). The Processing Facility may be located atop an inactive portion of the CDLF unit. When the Processing Facility is to be operated over an inactive portion of the CDLF, a soil pad with a minimum thickness of 2 feet shall be placed beneath the processing facility operational area (including the tipping and grinding areas), in addition to the interim soil cover (see Section 14). The purpose of the supplemental operating soil pad is to protect the underlying wastes – and water quality – against possible spills, leaks and/or the introduction of non-compliant materials (liquids) that might escape detection in the preliminary screening. The soil pad serves as an absorbent layer that can be removed in the case of an incident, minimizing the chance of the incident affecting the ground water or surface water monitoring system, and maintaining adequate coverage for the underlying wastes. The soil pad may be removed at the end of the processing operation and/or prior to placement of final cover and/or additional waste disposal. 6.5 Equipment Maintenance Facility equipment consists of a variety of excavators, loaders, dozers, dump trucks, and specialized equipment, e.g., a tub grinder for LCID and a separate grinder with power screens for aggregates. Most of the equipment is used in the normal course of mining operations. The Owner represents that he has sufficient resources to provide and maintain the needed equipment to operate the facility. A maintenance schedule for the facility equipment is beyond the scope of this Operations Plan. The Operator (or his designee) should develop a routine equipment maintenance program to lessen the likelihood of fluid spills or leaks. Fuel and lubricants shall be stored under covers and/or with secondary containment systems that are separate from the principle storm water drainage systems at all times. Care shall be taken when servicing or fueling equipment to prevent spills. Driveways, shop areas and all operations areas where heavy equipment is working shall be inspected daily for signs of spills and leaks. Equipment should be parked overnight and serviced in areas that will not contaminate the facility storm water management systems. Care shall be taken not to allow any hazardous substance to enter the surface water or ground water, including (but not limited to) fuel, oil, hydraulic fluid, pesticides, and herbicides. 6.6 Utilities Electrical power, water, telephone, and restrooms will be provided at the scale house. Other sanitary facilities shall be provided for the field staff, as needed. Two-way radios or cell phones shall be provided to the field staff for communication with the scale house. Portable light plants may be required to promote safe operation of the processing facility in the late afternoon or evening. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 11 6.7 Vector Control Steps shall be employed to minimize the attraction of disease carrying vectors, e.g., birds, rodents, dogs, mosquitoes. The C&D wastes are mostly inert (subject to the waste screening procedures) and not attractive to animals. Pools of standing water should be avoided. 6.8 Air Quality Criteria Dust Control – Measures shall be taken to control dust from the operations. Dusty wastes shall be covered immediately with soil, and water shall be sprinkled on roads and other exposed surfaces (including operational cover and/or the working face, as needed) to control dust. Disposal activities may need to be suspended during high winds. Open Burning – No open burning of any waste shall be allowed. State Implementation Plan – Compliance with the State Implementation Plan (SIP) for air quality under Section 110 of the Clean Air Act, as required by 15A NCAC 13B .0531 et seq., is demonstrated with the following discussion. Typically, the SIP focuses on industries that require air permits and activities that have regulated emissions that contribute to unhealthy levels of ozone, NOx, SO4, VOC’s, particularly coal combustion byproducts (from electric power plants) and other “smokestack” industries. Compliance with the spirit of the SIP is demonstrated by the prohibition of combustion of solid waste, the fact that the wastes are generally inert and do not emit sufficient quantities of landfill gas to require active controls (such as flaring). The facility is not located in a designated area of non-attainment for ozone and/or fine particle emissions (e.g., VOC’s, NOx), designation based on NC DEQ Division of Air Quality (DAQ) web site information. In 2009 information (acquired for a nearby facility), concerning the possibility of certain areas of the state being designated as non-attainment areas for ozone, suggested that a non-attainment designation would not affect existing facilities – a larger impact might be expected on future industrial location in the region – and the three-year data that lead to this consideration was barely above the US-EPA’s threshold for attainment. State-wide, ozone monitoring data show general improvement since the implementation of the “clean smokestacks” legislation within the last several years, and if the next few months show continued improvement, US-EPA may not impose the non-attainment designation.1 This leads to a conclusion that the facility is not contributing to an existing non-attainment condition in the local area, nor is it likely to in the future. Nonetheless, proactive steps that can be taken at the facility include dust control measures (see below) to minimize airborne particle emissions, minimizing the idling time on trucks and equipment, keeping mechanized equipment in good operating condition, and using low-sulfur fuels, subject to availability. Adherence to the waste acceptance criteria will minimize VOC emissions. Regular application of periodic cover will reduce the risk of fires and curtail wind-blown debris; the proper use of vegetative cover will further minimize fugitive emissions of dust and particulates. 1 Tom Mather, Public Information Officer, NC DEQ Division of Air Quality, personal communication (2-12-09) Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 12 6.9 Litter Control Appropriate measures will be taken to control trash and windblown debris within and around the facility, including litter on Gold Hill Road. The site and entrance will be policed for litter on a weekly basis and such materials will be collected and disposed of properly. 7.0 OPERATING RECORD The Operating Record shall consist of one or more files, notebooks, or computerized records and associated maps that document the day-to-day facility operations, including the waste intake and sources, transfer records, routine waste placement, cover, and closure activities (for the CDLF), routine or special maintenance requirements and follow up activities, to include the following: A Daily intake tonnage records - including source of generation B Tonnage and type of recycled materials shipped offsite C Copies of the facility map, tracking the current location of waste placement activities, interim closure and completed final closure activities – including the date and time of placement of cover material D Waste inspection records (on designated forms); fire notification forms; E Quantity, location of disposal, generator, and special handling procedures employed for all special wastes disposed of at the site F Generators or haulers that have attempted to dispose of restricted wastes G Employee training procedures and records of training completed H Ground water quality monitoring information including: 1. Copy of the current Sampling and Analysis Plan (Monitoring Plan) 2. Monitoring well construction records 3. Sampling reports 4. Records of inspections, repairs, etc. I Date and time of the cover placement (both periodic and interim covers) must be recorded in the operating recorded in compliance with Rule .0542 (f) (2). J Closure and post-closure information, where applicable, including: 1. Testing 2. Certification 3. Completion records K Cost estimates for financial assurance documentation L Annual topographic survey of the active disposal phase M Records of operational problems or repairs needed at the facility, e.g., slope maintenance, upkeep of SE&C measures, other structures N Equipment maintenance records O Daily rainfall records (via on-site rain gauge). Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 13 P Landfill gas monitoring information: 1. Quarterly methane monitoring records 2. Landfill Gas Monitoring and Control Plan Q Updated Financial Assurance Documentation R Compliance Audit Records (by the SWS) and follow up documentation S Copies of the Operation Plan, Closure and Post Closure Plan, Sediment and Erosion Control Plan, Construction Drawings, Storm Water Pollution Prevention Plan, Storm Water General Permit Certificate of Coverage, Solid Waste Permit, and Mining Permit The Owner or his designee will keep the Operating Record up to date. Records shall be presented upon request to DWM for inspection. A copy of this Operations Plan shall be kept at the landfill and will be available for use at all times, along with the Closure/Post-Closure Plan, the Monitoring Plan, and Monitoring Records. 8.0 ANNUAL REPORT The facility shall file an annual report with the NC DEQ Division of Waste Management by August 1 of each year, detailing the activities for the preceding July 1 through June 30. Records shall be kept pertaining to the types and amounts of wastes received, as well as the types and amounts of materials reused, recycled, and distributed; material quantities shall be reported annually in tons. This report also shall be furnished to Randolph County Planning Department, as required. The rules for C&D landfills require an annual survey to determine slope, height, and volume (Section 15). The reporting requirements include an annual topographic map prepared by a licensed surveyor. 9.0 CONTINGENCY PLAN 9.1 Hot Loads Contingency In the event of a "hot" load attempting to enter the landfill, the scale house staff will temporarily suspend all waste intake and, unless there is imminent danger to the driver or staff, the errant vehicle will be isolated away from structures and other traffic and the fire department will be called. If safe to do so, the vehicle may be dumped and pulled away from the fire. The vehicle will not be allowed onto the working face until the fire is out. If a hot load is detected on the working face, then the load will be treated as a fire condition (Section 5), whereas the load will be spread as thinly as possible and cover soil will be placed immediately to smother the fire. Other traffic will be redirected away from the fire, or the other waste deliveries may need to be suspended until the fire is out. The fire will be monitored to ensure it does not spread. If the fire cannot be controlled, the fire department will be notified and the area cleared of non-essential personnel. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 14 9.2 Hazardous Waste Contingency In the event that identifiable hazardous waste, or waste of questionable nature, is detected at the scales or in the landfill, appropriate protective equipment, personnel, and materials will be employed as necessary to protect the staff and public. Hazardous waste identification may be based on (but not limited to) strong odors, fumes or vapors, unusual colors or appearance (e.g., liquids), smoke, flame, or excess dust. The fire department will be called immediately in the event a hazardous material is detected. An attempt will be made to isolate the wastes in a designated area where runoff is controlled, preferably prior to unloading, and the vicinity will be cleared of personnel until trained emergency personnel (fire or haz-mat) take control of the scene. Staff will act prudently to protect personnel but no attempt will be made to remove the material until trained personnel arrive. A partial listing of regional Hazardous Waste Responders and disposal firms is found in Attachment A. In no circumstance shall hazardous wastes knowingly be placed in the landfill. It may be necessary to reload the errant vehicle, following safety protocols and guidance from the fire department or scene commander. Equipment may need to be decontaminated. Overall, it would be prudent to allow the haz-mat responder to handle the wastes. The Operator will notify the Division (see Section 1.6) that an attempt was made to dispose of hazardous waste at the landfill. If the vehicle attempting disposal of such waste is known, an effort will be made to prevent that vehicle from leaving the site until it is identified (license tag, truck number driver and/or company information) or, if the vehicle leaves the site, law enforcement should be called and immediate notice will be served on the owner of the vehicle that hazardous waste, for which they have responsibility, has been disposed at the landfill or attempted disposal has occurred. The landfill staff will assist the Division as necessary and appropriate in the removal and disposition of the hazardous waste (acting under qualified supervision) and in the prosecution of responsible parties. If needed, the hazardous waste will be covered with on-site soils, tarps, or other covering until such time when an appropriate method can be implemented to properly handle the waste. The cost of the removal and disposing of the hazardous waste may be charged to the owner of the vehicle involved. Any vehicle owner or operator who knowingly places or attempts to place hazardous waste in the landfill may be barred from using the landfill and/or reported to law enforcement authorities. Any hazardous waste found at the scales or in the landfill that requires mitigation under this plan shall be documented by staff using the Waste Screening Form provided in Attachment B. Records of information gathered as part of the waste screening programs will be placed in the Operating Record and maintained throughout the facility operation. 9.3 Severe Weather Contingency Unusual weather conditions can directly affect the operation of the landfill. Some of these weather conditions and recommended operational responses are as follows. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 15 9.3.1 Ice Storms An ice storm can hinder access and/or prevent equipment movement or placement of periodic cover. Closure of the landfill may be required until the ice is removed or has melted and the access roads are passable without risk to personnel or the cover. 9.3.2 Heavy Rains Exposed soil surfaces can create access problems during prolonged rainy periods. The control of drainage and use of crushed stone (or recycled aggregates) on unpaved roads should provide all- weather access for the site and promote drainage away from critical areas. In areas where the aggregate surface is washed away or otherwise damaged, aggregate should be replaced. Intense rains can affect newly constructed drainage structures such as swales, diversions, cover soils, and vegetation. After such an event, an inspection by landfill staff will be initiated and corrective measures taken to repair any damage found before the next rainfall. Processing activities should be planned to avoid sorting and grinding during periods of rain. Ideally, waste deliveries should be suspended until the rain passes, but if unloading in the rain cannot be avoided the debris piles should be kept small as possible and covered with tarps. Sorting should be completed as soon as practical and all materials cleared from the tipping area to avoid contact with rain or runoff. 9.3.4 Electrical Storms The open area of a landfill is susceptible to lightning strikes during an electrical storm. If necessary, landfill activities will be temporarily suspended during a storm, and personnel should take refuge in buildings or rubber-tire vehicles. 9.3.5 Windy Conditions High winds can create windblown wastes, typically paper and plastic, but larger objects have been known to blow in extreme circumstances. Operations should be suspended if blowing debris becomes a danger to staff, after the working face is secured. The operational sequence minimizes exposure of the working face to prevailing winds. If this is not adequate during a particularly windy period, work will be temporarily shifted to a more sheltered area. When this is done, the previously exposed face will be immediately covered with daily cover. Soil cover shall be applied whenever windblown wastes become a problem. Staff shall patrol the perimeter of the landfill periodically, especially on windy days, to remove windblown litter from tress and adjacent areas. Windscreens of various sorts have been used with mixed success at other facilities in the region. Proper planning for windy conditions is essential. 9.3.4 Violent Storms In the event of a hurricane, tornado, or severe winter storm warning issued by the National Weather Service, landfill operations should be temporarily suspended until the warning is lifted. Daily cover will be placed on exposed waste and buildings and equipment will be properly secured. In the event of eminent danger to staff or the public, personal safety shall take precedence over other concerns. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 16 PART 2 – PROCESSING (RECYCLING) FACILITY 10.0 OVERVIEW This section describes the general waste intake and handling operations for the Processing (Recycling) facility. These protocols shall be followed, regardless of whether the material is source-sorted and delivered by affiliated waste transport vehicles or brought to the facility by private contractors or the general public. 10.1 Acceptable Wastes The Facility shall only accept these waste types generated within approved service area:  Construction Debris: Unpainted and untreated wood, plywood, particle board, hardboard, gypsum board, siding, flooring, asphalt shingles, etc., from new residential or commercial construction;  Demolition Debris: Concrete, brick, block and asphalt will be accepted; unpainted and untreated wood, roofing, insulation, piping, wallboard, siding, etc., from residential and commercial remodeling, repair, or demolition operations, will be accepted after the Facility produces certificates of training for the staff pertaining to the identification and safe handling of hazardous materials (e.g., asbestos, lead paint)  Land Clearing and Inert Debris: Stumps, trees, limbs, brush, other vegetation, concrete, brick, concrete block, clean soils and rock, untreated/unpainted wood, etc. 10.2 Prohibited Wastes No municipal solid waste (MSW), hazardous waste as defined by 15A NCAC 13A .0102, including hazardous waste from conditionally exempt small quantity generators (CESQG waste), or liquid waste will be accepted at this facility. In addition, no tires, batteries, polychlorinated biphenyl (PCB) waste, electronic devices (computer monitors), or mercury switches and fluorescent lamps will be accepted. Animal carcasses will not be accepted. No oils, grease, solvents, or fluids of any kind will be accepted, nor will bagged wastes, putrescible or household wastes. A partial listing of prohibited wastes is presented on Table 1 following this section. 10.3 Waste Processing In order to assure that no prohibited waste enters the Facility, a waste screening program will be implemented (see Section 10.4). Waste received at the scale house will be inspected by trained personnel. These individuals will be trained to spot indications of suspicious wastes, including: hazardous material placards or markings, liquids, powders or dusts, sludges, bright or unusual colors, drums or commercial size containers, and "chemical" odors. Screening programs for visual and olfactory characteristics of prohibited wastes will be an ongoing part of the Facility operation. All staff should be alert to the possibility of unauthorized materials entering the landfill, know the appropriate response, and understand the consequences for non-compliance. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 17 10.4 Waste Receiving and Screening It is anticipated that most of the waste arriving at this facility will undergo some type of processing prior to disposal. All incoming vehicles must stop at the scale house located near the entrance of the facility, and visitors are required to sign-in. All waste transportation vehicles shall be uncovered prior to entering the scales to facilitate inspection; all incoming loads shall be weighed and the content of the load assessed. The attendant shall request from the driver of the vehicle a description of the waste it is carrying to ensure that unacceptable waste is not allowed into the Facility. Signs informing users of the acceptable and unacceptable types of waste shall be posted near the facility entrance. The attendant shall visually check the vehicle as it crosses the scale. Suspicious loads will be pulled aside for inspection prior to leaving the scale area. Loads with unacceptable materials or wastes generated from outside of the service area will be directed to the nearby Transfer Station. Once passing the scales, incoming transport vehicles will be routed to the tipping area for unloading, inspection, sorting and appropriate processing, depending on the nature of the load – C&D and LCID materials will go to separate areas (Sections 10.5 and 10.6). Incoming vehicles shall be selected at random for screening a minimum of three times per week. The selection of vehicles for screening might be based on unfamiliarity with the vehicle/driver or based on the driver’s responses to interrogation about the load content. Vehicles selected for inspection shall be directed to an isolated area away from the stockpile of materials to be stockpiled, where the vehicle will be unloaded and the waste shall be carefully spread using suitable equipment. An attendant trained to identify unacceptable wastes shall inspect the waste, using the Waste Screening Form (Attachment B) to document the waste screening activity. After the waste screening inspection of a load, one of the following activities will occur:  If no unacceptable waste is found, the load will be pushed to the active recycling area and processed with the remainder of the day’s intake;  If unacceptable materials are found, the entire load will be isolated and secured via barricades, then loaded into roll-off boxes for disposal at a permitted facility;  Non-hazardous materials will be reloaded onto the delivery vehicle for removal from the facility, the hauler will be escorted to the nearby MSW Transfer Station;  If hazardous materials are detected, the Hazardous Waste Contingency Plan outlined in Section 9 will be followed. The hauler will be held responsible for removing unacceptable waste from the Facility. The rejection of the load shall be noted on the Waste Screening Form, along with the identification of the driver and vehicle. A responsible party to the load generator or hauler shall be notified that the load was rejected. The generator or hauler may be targeted for more frequent screening and/or banished from the facility, depending on the nature of the violation of the waste acceptance policy. State and County authorities may be notified of severe or repeat offenders. 10.5 LCID Processing The Facility may recycle LCID to make mulch, boiler fuel, and aggregates. LCID wastes generally consist of brush, limbs, tree trunks, stumps, leaves, dirt, inert debris, and other Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 18 materials defined by the NC DEQ Solid Waste rules. LCID materials may be stockpiled and shredded or ground within a designated area (in a future CDLF phase) but separated from the CDLF working face. Some LCID materials may be combined with similar C&D materials post- processing – e.g., wood wastes that can be ground into boiler fuel and inert debris that can be processed into aggregates. LCID materials shall not be commingled with other materials prior to processing, except for concrete debris. 10.6 C&D Processing The Facility may recycle C&D wastes aggregates, boiler fuel, mulch, and beneficial fill. Typically, C&D materials are anticipated to arrive source-sorted, having been transported by an affiliated hauler, but some private hauling will occur. Sorting will take place at least 50 feet from the CDLF working face, with appropriate runoff controls and S&EC measures in place. The sorted materials will be redirected to appropriate stockpiles and/or roll-off boxes and temporarily stored for further processing (see below). Non-recyclable C&D materials will be pushed into the CDLF working face (Section 12). Co-mingling of pre-process or interim stage processed materials from the C&D and LCID waste streams will NOT be allowed – except for concrete debris – separate stockpiles or containers shall be maintained. Concrete debris is processed in a separate area. All materials will be strictly accounted for, including those in various stages of processing, stockpiled finished goods, on-site beneficial-use and/or distribution. 10.7 Disposal of Rejected Wastes All waste loads will be inspected upon arrival, in order to reject inappropriate material before it is unloaded or such that it can be reloaded onto the transport vehicle and sent to an appropriate facility. One or more roll-off boxes will be kept on-site for disposal of any “reject” materials that are found in the waste during material sorting, e.g., small quantities of garbage (e.g., food containers), plastic packaging, paint cans, insulation, carpet, etc. Such “rejects” will be placed into the roll-off boxes and removed from the site for disposal at an approved facility, e.g. the nearby Transfer Station or another approved MSW facility. The roll-off boxes will be removed on a weekly basis. The number of roll-off boxes required will depend on the market trends. Operations will be conducted to minimize the amount of reject materials through source sorting – this facility will not become a MSW transfer station. 10.8 Processing of Finishing Goods Processing activities shall be limited to grinding, shredding, or chipping land clearing debris, unpainted/untreated wood waste (including pallets and new construction waste), and certain engineered wood products (plywood, particle board), to make boiler fuel or mulch (but not compost). Inert materials will be processed and recycled into aggregates. The operation of the Processing Facility will include the following:  Pre-processed sorted C&D (raw materials) will be stockpiled temporarily in the designated sorting area, adjacent to the working face.  Woody materials suitable for making mulch and/or boiler fuel (including pallets) will be ground or shredded and stored in over-the-road shipping containers. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 19  Earthen inert materials (dirt, rocks, concrete debris) suitable for “beneficial fill” and/or for processing into aggregates, will be ground or shredded and stockpiled.  Metals will be placed in roll-off boxes and kept clean and ready to haul to off-site recycling operations until a full load is reached.  New guidelines apply for storing and processing asphalt shingles intended for recycling (see Section 10.11). Source-sorted, new (non-asbestos), tear-off asphalt shingles may be stored for recycling. Shingles accepted for disposal only should be sent to the working face. No grinding of shingles shall be conducted onsite without further permitting. The Owner intends to process incoming material and remove sorted materials from the tipping area to covered bins or stockpiles by the end of each working day. Finished materials will be sold or used on-site on a quarterly (or more frequent) basis. If the stockpiles of finished products must remain on-site for longer periods of time, these materials will be wetted and turned quarterly (as needed) to prevent composting and/or fires (see Section 2.1). 10.9 Maximum Stockpile Size Maximum volumes of all processed and raw materials to be stored in stockpiles at the processing facility (for those materials not stored in roll-off boxes) shall be 6000 cy – this is consistent with Solid Waste Sections rules and guidelines for “notification” stockpiles, e.g., LCID stockpiles. The following provides guidance for determining the maximum allowable stockpile dimensions to meet this requirement at various heights with 2H:1V maximum side slope ratios. The selection of maximum size of stockpile needs to incorporate the factors of safe operation, storage, and fire prevention. Height of Pile, ft Top of Pile Diameter, ft Bottom of Pile Diameter, ft Average Cross Section Area, sf Volume, cy 20 20 100 60 2,093 20 40 80 80 3,721 25 20 120 70 3,562 25 40 140 90 5,887 30 20 140 80 5,582 10.10 Maximum Processed Material Storage Volumes Estimates of maximum stored volumes of combustible materials such as unprocessed wastes, boiler fuel and mulch (see Sections 10.5 and 10.6) are as follows. The bulky materials are stored in multiple stockpiles with variable daily volumes. Non-combustible aggregates are stored separately, typically for longer duration depending on demand, but these materials do not pose a fire hazard. Finished goods are marketable and relatively easy to move. The facility is located near a MSW Transfer Station that will receive materials that cannot be disposed in the CDLF. Unprocessed Wastes 3,000 cy Boiler Fuel 1,000 cy Mulch 2,000 cy Total All Stockpiles 6,000 cy Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 20 10.11 Asphalt Shingle Storage for Recycling The Owner/Operator shall only accept new tear-off asphalt shingles for storage, typically from contractors they know. Due to the potential health concerns with shingles of any age, especially older ones from demolition sites, no grinding of shingles shall be conducted at the facility. Source-sorted shingles shall be placed into roll off boxes or temporary stockpiles as separate loads. Documentation for the source for each load shall be retained. A detailed plan for documenting the intake and distribution (i.e., to a licensed recycler) of asphalt shingles is found in Attachment C. Old shingles may contain asbestos and shall not be stored or processed for recycling at this facility. Asphalt shingles arriving without documentation or in mixed loads may be accepted for disposal, but these materials shall not go through the processing line and should be sent to the working face. Acceptance and storage of documented asphalt shingles for off-site recycling may take place within the current T&P area on top of the CDLF, at least 50 feet away from the working face alongside other recycling activities. The facility is only authorized to receive and store asphalt shingles at this time. The facility must adhere to NC DEQ’s documentation requirements outlined in Attachment C to maintain operational compliance. Should the facility opt to grind shingles into a recycled byproduct in the future, an additional Solid Waste Processor permit application and an asbestos screening plan will be prepared to supplement this Operations Plan. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 21 TABLE 1 PROHIBITED WASTES FOR PROCESSING  Putrescible wastes (garbage and/or food wastes)  Demolition Wastes  Hazardous wastes: Pesticides Herbicides Used motor oil Antifreeze Solvents Paint thinners  Hazardous materials as defined by 15A NCAC 13A  Radioactive materials  Lead acid batteries  Regulated medical wastes  Polychlorinated biphenyls (PCB) wastes  All sludges except sludge from water treatment plants  White Goods  Liquid wastes  Animal carcasses  Asbestos wastes  Yard Wastes  Tires  Electronic equipment  Mercury switches or lamps References: 15A NCAC 13B .0103 15A NCAC 13B .1626 Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 22 PART 3 – CDLF OPERATION 11.0 WASTE ACCEPTANCE CRITERIA 11.1 Permitted Wastes The C&D Landfill shall only accept (for disposal) the following wastes generated within approved areas of service:  Construction and Demolition Debris Waste: (Waste or debris derived from construction, remodeling, repair, or demolition operations on pavement or other structures);  Land Clearing and Inert Debris Waste: (yard waste, stumps, trees, limbs, brush, grass, concrete, brick, concrete block, uncontaminated soils and rock, untreated and unpainted wood, etc.);  Other Wastes as approved by the NC DEQ Solid Waste Section. 11.2 Asbestos The Facility may dispose of asbestos within the C&D landfill, or within a special designated area, only if the asbestos has been processed and packaged in accordance with State and Federal (40 CFR 61) regulations. Handling asbestos requires advance arrangements between the hauler and the Facility and special placement techniques (see (Section 13.2). 11.3 Wastewater Treatment Sludge Sludges of any kind shall not be disposed in the C&D Landfill, per Division rules. Waste Water Treatment Plant sludge may be used as a soil conditioner to enhance the final cover, upon receipt of permission from the Division, to be applied at agronomic rates. 11.4 Waste Exclusions No municipal solid waste (MSW), hazardous waste as defined by 15A NCAC 13A .0102, or hazardous waste from conditionally exempt small quantity generators (CESQG waste), sludges or liquid wastes will be accepted. No drums or industrial wastes shall be accepted. No tires, batteries, polychlorinated biphenyl (PCB), electronic devices (computer monitors), medical wastes, radioactive wastes, septage, white goods, yard trash, fluorescent lamps, mercury switches, lead roofing materials, transformers, or CCA treated wood shall be accepted. No pulverized or shredded C&D wastes may be accepted – except those materials received and inspected in a whole condition and shredded on-site. The Facility will implement a waste- screening program, described in Section 12.1 below, to control these types of waste. Solid Waste Rule .0542 (e) contains further exclusions (see Table 2). Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 23 12.0 WASTE HANDLING PROCEDURES In order to assure that prohibited wastes are not entering the landfill facility, screening programs have been implemented at the landfill. Waste received at both the scale house entrance and waste taken to the working face is inspected by trained personnel. These individuals have been trained to spot indications of suspicious wastes, including: hazardous placards or markings, liquids, powders or dusts, sludges, bright or unusual colors, drums or commercial size containers, and "chemical" odors. Screening programs for visual and olfactory characteristics are an ongoing part of the landfill operation. 12.1 Waste Receiving and Inspection All incoming vehicles must stop at the scale house located near the entrance of the facility, and visitors are required to sign-in. All waste transportation vehicles shall be uncovered prior to entering the scales to facilitate inspection; all incoming loads shall be weighed and the content of the load assessed. The scale attendant shall request from the driver of the vehicle a description of the waste it is carrying to ensure that unacceptable waste is not allowed into the landfill. Signs informing users of the acceptable and unacceptable types of waste shall be posted at the entrance near the scale house. The scales attendant shall visually check the vehicle as it crosses the scale. Any suspicious loads will be pulled aside for a more detailed inspection prior to leaving the scale house area. Loads with unacceptable materials will be required to be covered (with a tarp) and turned away from the facility. Wastes from outside of the service area will be rejected. Once passing the scales, the vehicles containing C&D wastes are routed to the working face. Vehicles shall be selected for random screening a minimum of three times per week. The selection of vehicles for screening might be based on unfamiliarity with the vehicle/driver or based on the driver’s responses to interrogation about the load content. The Operator shall use the Waste Screening Form (see Attachment B) to document the waste screening activities. Documentation of waste screenings shall be placed in the Operational Record (see Section 7). Selected vehicles shall be directed to an area of intermediate cover adjacent to the working face where the vehicle will be unloaded and the waste shall be carefully spread using suitable equipment. An attendant trained to identify wastes that are unacceptable at the landfill shall inspect the waste discharged at the screening site. If no unacceptable waste is found, the load will be pushed to the working face and incorporated into the daily waste cell.  If unacceptable wastes that are non-hazardous are found, the load will be reloaded onto the delivery vehicle and directed to the nearby Transfer Station.  For unacceptable wastes that are hazardous, the Hazardous Waste Contingency Plan outlined in Section 9 will be followed. The hauler is responsible for removing unacceptable waste from the landfill property. The rejection of the load shall be noted on the Waste Screening Form, along with the identification of the driver and vehicle. A responsible party to the load generator or hauler shall be notified that the load was rejected. The generator or hauler may be targeted for more frequent waste Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 24 screening and/or banished from delivering to the facility, depending on the nature of the violation of the waste acceptance policy. If the violation is repetitive or severe enough, State and/or County authorities may be notified. 12.2 Disposal of Rejected Wastes Attempts will be made to inspect waste as soon as it arrives in order to identify the waste hauler; ideally, the hauler can be stopped from leaving the site and the rejected materials reloaded onto the delivery vehicle. Non-allowed materials that are found in the waste during sorting or placement, i.e., after the delivery vehicle has left the site, shall be taken to the on-site Transfer Station. Small quantities of garbage (chiefly food containers) will inevitably wind up in the C&D waste stream from job sites. These may be disposed with the C&D wastes as long as the materials are non-liquid and non-hazardous. If large quantities of garbage, “black bags” or any prohibited wastes are detected, the Operator shall be responsible for removing these materials and placing them into the Transfer Station at the earliest practical time. 13.0 C&D DISPOSAL PROCEDURES Waste transportation vehicles will arrive at the working face at random intervals. There may be a number of vehicles unloading waste at the same time, while other vehicles are waiting. In order to maintain control over the unloading of waste, only a certain number of vehicles will be allowed on the working face at a time. The superintendent and/or equipment operator(s), who will serve as ‘spotters’, will determine the actual number. This procedure will be used in order to minimize the potential of unloading unacceptable waste and to control disposal activity. Operations at the working face will be conducted in a manner that will promote the efficient movement of vehicles to and from the working face, and to expedite the unloading of waste. At no time during normal business hours will the working face be left unattended. Scale house and field staff shall be in constant communication regarding incoming loads and the movement of vehicles on the site, irrespective of facility vehicles or private vehicles. It is the responsibility of the working face superintendent to know where each vehicle in the facility is located and what they are doing at all times. Portable signs with directional arrows and barricades will be used to direct traffic to the correct unloading area. The approaches to the working face will be maintained such that two or more vehicles may safely unload side by side. A vehicle turn-around area large enough to enable vehicles to arrive and turn around safely with reasonable speed will be provided adjacent to the unloading area. The vehicles will back to a vacant area near the working face to unload. Upon completion of the unloading operation, the transportation vehicles will immediately leave the working face. Personnel will direct traffic as necessary to expedite safe movement of vehicles. Waste unloading at the landfill will be controlled to prevent disposal in locations other than those specified by site management. Such control will also be used to confine the working face to a minimum width, yet allow safe and efficient operations. The width and length of the working face will be maintained as small as practical to control windblown waste, preserve aesthetics, and minimize the amount of required periodic cover. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 25 Normally, only one working face will be active on any given day, with all deposited waste in other areas covered by either periodic or final cover, as appropriate. The procedures for placement and compaction of solid waste include: unloading of vehicles, spreading of waste into 2 foot lifts, and compaction on relatively flat slopes (i.e., 5H: IV max.) using a minimum number of three full passes. Depending on the nature of the wastes and in-situ density, the waste placement geometry and compaction procedures may require adjustment to optimize airspace. 13.1 Spreading and Compaction The working face shall be restricted to the smallest possible area; ideally, the maximum area of exposed waste shall be one-quarter to one-half acre. Wastes shall be compacted as densely as practical. Appropriate methods shall be employed to reduced wind-blown debris including (but not limited to) wind fences, screens, temporary soil berms, and periodic cover. Any wind-blown debris shall be recovered and placed back in the landfill as soon as practical. 13.2 Special Wastes: Asbestos Management Any asbestos handling and disposal will follow specific NC DEQ regulations with proper shipping manifests and documentation of disposal. Asbestos shall arrive at the site in vehicles that contain only the asbestos waste and only after advance notification by the generator and if accompanied by a proper NC DMV transport manifest. Once the hauler brings the asbestos to the landfill, operations personnel will direct the hauler to the designated asbestos disposal area. Operations personnel will prepare the designated disposal area by leveling a small area using a dozer or loader. Prior to disposal, the landfill operators will stockpile cover soil near the designated asbestos disposal area. The volume of soil stockpiled will be sufficient to cover the waste and to provide any berms, etc. to maintain temporary separation from other landfill traffic. Once placed in the prepared area, the asbestos waste will be covered with a minimum of 18 inches of daily cover soil placed in a single lift. The surface of the cover soil will be compacted and graded using a tracked dozer or loader. The landfill compactor will be prohibited from operating over asbestos disposal areas until at least 18 inches of cover are in-place. The landfill staff shall record the location and elevation of the asbestos waste once cover is in-place. Records of the disposal activity shall be entered into the Operating Record. Once disposal and recording for asbestos waste is completed, the disposal area may be covered with C&D waste. No further excavation into recorded asbestos disposal areas will be permitted. 14.0 COVER MATERIAL 14.1 Periodic Cover The working face of the CDLF shall be covered on a weekly basis, or sooner if the area of exposed waste exceeds one-half acre in size. Periodic cover shall consist of a 6 inch layer of earthen material that completely covers the waste to control vectors, fire, odors, and blowing debris. Alternative periodic cover may be considered, subject to a demonstration project with prior approval from the Division. Placement of periodic cover shall be documented in the Operating Record (see Section 7) and on a copy of the facility map. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 26 14.2 Interim Soil Cover An interim soil cover (at least 24 inches in thickness) shall be placed on inactive slopes, subject to the following conditions:  Interior slopes adjacent to future expansion (such as a cell or phase boundary) no later than 30 days following the last waste receipt, providing that further waste disposal will occur within one year of the last waste receipt*  Exterior slopes that have attained final grade, but are to be left for no more than 15 working days without temporary vegetation, until an area of no more than 10 acres is ready to be closed simultaneously.** *North Carolina Solid Waste Rule 15A NCAC 13B .0543 requires final cover to be placed if the slope shall remain inactive for more than one year **Typically, it is advantageous to close the final slopes in 2 to 3 acre increments, observing the placement of erosion control benches; 10 acres is the regulatory maximum Interim cover soils shall be vegetated in accordance with the Seeding Schedule presented in the Facility Drawings. Either temporary or permanent vegetation may be required – and alternate ground cover may be considered – depending on the time duration of inactivity. Placement of interim cover shall be documented in the Operating Record and on a copy of the facility map. 14.3 Final Cover Exterior slopes shall be closed upon reaching final grades in increments throughout the operation of the facility. Placement of final cover shall be documented in the Operating Record and on a copy of the facility map. The permitted final cover consists of a minimum of 18 inches of compacted soil cover (maximum 10-5 cm/sec permeability requirement), overlain by 18 inches of vegetation support soil. In general, the final soil cover shall be spread in three uniform lifts (maximum of 9 inches before compaction, 6 inches after compaction), and soils shall be compacted by “tracking” with dozers or other equipment. North Carolina Solid Waste regulations require a maximum permeability, achieved through proper material selection and compaction criteria, confirmed by the testing program outlined in the CQA section of the Closure and Post-Closure Plan, found in the Permit to Construct documents. Sedimentation and Erosion Control Rule 15A NCAC 04B .0107, MANDATORY STANDARDS FOR LAND-DISTURBING ACTIVITY, states as follows: “Pursuant to G.S. 113A-57(3), provisions for a ground cover sufficient to restrain erosion must be accomplished within 15 working days or 90 calendar days following completion of construction or development, whichever period is shorter.” Prior to May 2013 the rule required that all disturbed soils shall be stabilized within 20 days following completion of the grading. The facility’s interpretation is that all slopes must be vegetated with a seed mix that is suitable to climatic conditions (see construction plans) within 15 days. All seeded areas should be provided with lime, fertilizer and straw mulch. An emulsified tack may be required to prevent wind damage. Other stabilization treatments, e.g., curled wood matting of synthetic slope stabilization blankets may be employed. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 27 At the operator’s discretion, wood mulch may be spread evenly over the final surfaces – at a maximum thickness of 2 inches – to help retain moisture and retard erosion while the vegetation develops. By SWS definition this material is not recognized to provide nutrient value but the partial decomposition of the wood mulch over time does introduce organic content to the soils, which were typically derived from deep within the borrow pit. Typically, the mulch takes about a year to break down and does benefit the effort of establishing vegetation, as long as the mulch is not applied too thick. This allows the operator some flexibility is establishing vegetation at optimum times. A nurse crop of seasonal vegetation can be sown at the time the slopes are finished and a permanent crop can be sown later, typically requiring manual sowing to prevent damaging the existing vegetation. All protective measures must be maintained until permanent ground cover is established and is sufficient to restrain erosion on the site. If settlement occurs after the cover is placed, the cover shall be fortified with additional soil. In the case of extreme settlement (unlikely), the old cover can be stripped and the affected area built up with waste prior to replacing the cover. The sedimentation and erosion control criteria governing the final closure of this facility are performance-based; some trial and error may be required, but the goal is to protect the adjacent water bodies and buffers throughout the operational and post-closure periods. 15.0 SURVEY FOR COMPLIANCE 15.1 Height Monitoring The landfill staff will monitor landfill top and side slope elevations on a weekly basis or as needed to ensure proper slope ratios, in accordance with the approved grading plan, and to ensure the facility is not over-filled. This shall be accomplished by use of a surveyor’s level and a grade rod. When such elevations approach the grades shown on the Final Cover Grading Plan, the final top-of-waste grades will be staked by a licensed surveyor. 15.2 Annual Survey The working face shall be surveyed on an annual basis to verify slope grades and to track the fill progression. In the event of problems (slope stability, suspected over-filling), more frequent surveys may be required at the request of the Division. 16.0 CONTINGENCY PLAN Refer to Section 9. 17.0 ANNUAL REPORTING Refer to Section 8. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update 28 TABLE 2 PROHIBITED WASTES IN THE CDLF UNIT 1) Containers such as tubes, drums, barrels, tanks, cans, and bottles unless they are empty and perforated to ensure that no liquid, hazardous or municipal solid waste is contained therein, 2) Garbage as defined in G.S. 130A-290(a) (7), 3) Hazardous waste as defined in G.S. 130A-290(a) (8), to also include hazardous waste from conditionally exempt small quantity generators, 4) Industrial solid waste unless a demonstration has been made and approved by the Division that the landfill meets the requirements of Rule .0503(2) (d) (ii) (A), 5) Liquid wastes, 6) Medical waste as defined in G.S. 130A-290(a) (18), 7) Municipal solid waste as defined in G.S. 130A-290(a) (18a), 8) Polychlorinated biphenyls (PCB) wastes as defined in 40 CFR 761, 9) Radioactive waste as defined in G.S. 104E-5(14), 10) Septage as defined in G.S. 130A-290(a) (32), 11) Sludge as defined in G.S. 130A-290(a) (34), 12) Special wastes as defined in G.S. 130A-290(a) (40), 13) White goods as defined in G.S. 130A-290(a) (44), and 14) Yard trash as defined in G.S. 130A-290(a) (45), 15) The following wastes cannot be received if separate from C&DLF waste: a) lamps or bulbs, e.g., halogen, incandescent, neon or fluorescent; b) lighting ballast or fixtures; c) thermostats and light switches; d) batteries, e.g., those from exit and emergency lights and smoke detectors; e) lead pipes; f) lead roof flashing; g) transformers; h) capacitors; and i) copper chrome arsenate (CCA) and creosote treated woods. 16) Waste accepted for disposal in a C&DLF unit must be readily identifiable as C&D waste and must not have been shredded, pulverized, or processed to such an extent that the composition of the original waste cannot be readily ascertained except as specified in Subparagraph (17) of this Paragraph. 17) C&D waste that has been shredded, pulverized or otherwise processed may be accepted for disposal from a facility that has received a permit from an authorized regulatory authority which specifies such activities are inspected by the authority, and whose primary purpose is recycling and reuse of the C&D material. A waste screening plan and waste acceptance plan must be made available to the Division upon request. 18) Waste that is generated outside the boundaries of a unit of local government ordinance (i.e., areas not approved by County Commissioners). Reference: 15A NCAC 13B .0542 Gold Hill Road CDLF (Permit 76-06) Operations Plan Update Attachment A Hazardous Waste Responders HAZARDOUS WASTE CONTACTS The following contacts were originally found on NC DENR Division of Waste Management’s web site in early 2007; since then, local phone numbers have been updated based on internet research. Facility management should verify the availability of these contacts before an emergency. The reference listing of these organizations here is not an endorsement by either the Division or the preparer of this document, nor are any affiliations in existence or implied. For more information refer to the respective URL’s. EMERGENCY RESPONSE Clean Harbours Reidsville, NC 336-342-6107 www.cleanharbors.com GARCO, Inc. Asheboro, NC 336-683-0911 www.egarco.com Safety-Kleen Reidsville, NC 336-669-5562 (a.k.a. Clean Harbours) Zebra Environmental Services High Point, NC 336-841-5276 www.zebraenviro.com TRANSPORTERS ECOFLO Greensboro, NC 336-855-7925 www.ecoflo.com GARCO, Inc. Asheboro, NC 336-683-0911 Zebra Environmental Services High Point, NC 336-841-5276 USED OIL AND ANTIFREEZE 3RC Resource Recovery Winston-Salem, NC 336-784-4300 Carolina Environmental Associates Burlington, NC 336-299-0058 Environmental Recycling Alternatives High Point, NC 336-905-7231 FLUORESCENT HANDLERS 3RC Resource Recovery Winston-Salem, NC 336-784-4300 Carolina Environmental Associates Burlington, NC 336-299-0058 ECOFLO Greensboro, NC 336-855-7925 GARCO, Inc. Asheboro, NC 336-683-0911 Safety-Kleen Reidsville, NC 800-334-5953 PCB DISPOSAL ECOFLO Greensboro, NC 336-855-7925 GARCO, Inc. Asheboro, NC 336-683-0911 Zebra Environmental Services High Point, NC 336-841-5276 Gold Hill Road CDLF (Permit 76-06) Operations Plan Update Attachment B Waste Screening Form WASTE SCREENING FORM Facility I.D. __________________ Permit No. __________________ Day / Date: ______________________ Time Weighed in: ______________________ Truck Owner: ______________________ Driver Name: ______________________ Truck Type: ______________________ Vehicle ID/Tag No: ______________________ Weight: ______________________ Tare: ______________________ Waste Generator / Source: _________________________________________________________________ Inspection Location: _________________________________________________________________ Reason Load Inspected: Random Inspection _______ Staff Initials ________ Detained at Scales _______ Staff Initials ________ Detained by Field Staff _______ Staff Initials ________ Description of Load: _________________________________________________________________ ______________________________________________________________________________________ Approved Waste Determination Form Present? (Check one) Yes______ No ______ N/A____ Load Accepted (signature) _______________________________ Date _______________ Load Not Accepted (signature) _______________________________ Date _______________ Reason Load Not Accepted (complete below only if load not accepted) _____________________________ Description of Suspicious Contents: Color ________ Haz. Waste Markings ___________ Texture ________ Odor/Fumes___________________ Drums Present ________ Other ________________________ (describe)_____________________ Est. Cu. Yds. Present in Load ________ Est. Tons Present in Load ________ Identified Hazardous Materials Present:______________________________________________________ County Emergency Management Authority Contacted? Yes______ No ______ Generator Authority Contacted? _________________________________________________________ Hauler Notified (check if waste not accepted)? ____ Phone ______________ Time Contacted ________ Final Disposition of Load _________________________________________________________________ Signed ___________________________________________Date ________________________ Solid Waste Director Attach related correspondence to this form. File completed form in Operating Record. Gold Hill Road CDLF (Permit 76-06) Operations Plan Update Attachment C Shingles Processing and Storage Site specific information a. The maximum amount of shingles to be stockpiled at any time is 40 cubic yards, or the equivalent of one roll-off box. b. The service area for shingle receipt must be consistent with the landfill service area. c. The Owner/Operator must keep contact information for the contracting shingle recycling company with the records of incoming and outgoing shingles. Any changes must be reflected in the records. d. No grinding of asphalt shingles shall be conducted at the T&P unit. The Owner/operator shall refer to the following generic plan, provided by the Solid Waste Section, which includes acceptance criteria for recycling and documentation for the sources of incoming loads (example form). Gold Hill Road CDLF (Permit 76-06) Operations Plan Update Attachment D Fire Notification Form FIRE OCCURRENCE NOTIFICATION NC DENR Division of Waste Management Solid Waste Section The Solid Waste Rules [15A NCAC 13B, Section 1626(5)(d) and Section .0505(10)(c)] require verbal notification within 24 hours and submission of a written notification within 15 days of the occurrence. The completion of this form shall satisfy that requirement. (If additional space is needed, use back of this form) NAME OF FACILITY: ______________________ PERMIT #_______________ DATE AND TIME OF FIRE ________/_____/_____ @ _____: ____ AM / PM (circle one) HOW WAS THE FIRE REPORTED AND BY WHOM ______________________________________ ___________________________________________________________________________________ LIST ACTIONS TAKEN_______________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ WHAT WAS THE CAUSE OF THE FIRE_________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ DESCRIBE AREA, TYPE, AND AMOUNT OF WASTE INVOLVED__________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ WHAT COULD HAVE BEEN DONE TO PREVENT THIS FIRE______________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ CURRENT STATUS OF FIRE __________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ DESCRIBE PLAN OF ACTIONS TO PREVENT FUTURE INCIDENTS: _______________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ NAME_______________________TITLE__________________________DATE_______________ THIS SECTION TO BE COMPLETED BY SOLID WASTE SECTION REGIONAL STAFF DATE RECEIVED____________________________ List any factors not listed that might have contributed to the fire or that might prevent occurrence of future fires: ___________________________________________________________________________________ ___________________________________________________________________________________ FOLLOW-UP REQUIRED: † NO † PHONE CALL † SUBMITTAL † MEETING † RETURN VISIT BY:____________________ (DATE) ACTIONS TAKEN OR REQUIRED: Revised 6/29/01 Appendix 6 Closure/Post-Closure Plan Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update | | CLOSURE/POST CLOSURE PLAN Gold Hill Road C&D Landfill Solid Waste Permit 7606-CDLF-2001 Submitted to: NCDEQ Division of Waste Management Solid Waste Section 217 W Jones Street Raleigh, NC 27603 Presented To: Morton and Sewell Land Company, LLC 385 Gold Hill Road Asheboro, North Carolina 27203 Presented By: SCS ENGINEERS 322 Chapanoke Road, Suite 101 Raleigh, NC 27603 (919) 662-3015 February 29, 2016 File No. 02214705.00 Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update i Table of Contents Section Page 1 Summary of Regulatory Requirements ............................................................................... 1 1.1 Final Cap ................................................................................................................... 1 1.2 Construction Requirements ...................................................................................... 1 1.3 Alternative Cap Design ........................................................................................... 1 1.4 Division Notifications ................................................................................................ 1 1.5 Required Closure Schedule ..................................................................................... 2 1.6 Recordation ............................................................................................................... 2 2 Closure Plan ............................................................................................................................ 2 2.1 Final Cap Installation ............................................................................................... 2 2.2 Maximum Area/Volume Subject to Closure ........................................................ 5 2.3 Closure Schedule ...................................................................................................... 6 2.4 Closure Cost Estimate ............................................................................................... 6 3 Post-Closure Plan ................................................................................................................... 8 3.1 Monitoring and Maintenance ................................................................................. 8 3.2 Responsible Party Contact ................................................................................... 11 3.3 Planned Uses of Property .................................................................................... 11 3.4 Post-Closure Cost Estimate ................................................................................... 11 A Estimated Final Closure Costs for Phases 1 and 2A ....................................................... 9 B Post-Closure Monitoring and Maintenance Schedule .................................................. 12 C Estimated Post-Closure Costs for Phase 2 ..................................................................... 14 Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 1 1 SUMMARY OF REGULATORY REQUIREMENTS 1.1 Final Cap The final cap design for all phases of the CDLF shall conform to the minimum requirements of the Solid Waste Rules, i.e., the compacted soil barrier layer shall exhibit a thickness of 18 inches and a field permeability of not more than 1.0 x 10-5 cm/sec. The overlying vegetative support layer shall be 18 inches thick. Drawings E2 – E5 show final contours and Drawing SC1 shows final cover cross-section and details. 1.2 Construction Requirements Final cap installation shall conform to the approved plans (see accompanying plan set), inclusive of the approved Sedimentation and Erosion Control Plan. The CQA plan must be followed (see Section 4.0) and all CQA documentation must be submitted to the Division. Post-settlement surface slopes must not be flatter than 5% on the upper cap and not steeper than 33% (3H:1V) on the side slopes. Per Rule 15 NCAC 13B .0543, a gas venting system is required for the cap. A passive venting system will be specified, which will consist of a perforated pipe in crushed stone-filled trench – installed just below the final cap soil barrier layer – with a tentative minimum vent spacing of three vents per acre. Drawing SC1 shows the gas vent system details. 1.3 Alternative Cap Design Rule 15 NCAC 13B .0543 make a provision for an alternative cap design, to be used in the event that the permeability requirements for the compacted soil barrier layer cannot be met. Past experience indicates that on-site soils may not meet the required field permeability of not more than 1.0 x 10-5 cm/sec, as supported by the laboratory data for the soils discussed in Section 4.0. Tentative final closure plans have assumed that on-site soils will be used for the compacted barrier layer – alternative cap designs may be researched and submitted for Division approval at a future time. Plans and specifications shall be provided to the Solid Waste Section for an alternative final cover design, if used, at least 60 days before any closure or partial closure activities (see Section 8.1.5). 1.4 Division Notifications The Operator shall notify the Division prior to beginning closure of any final closure activities. The Operator shall place documentation in the Operating Record pertaining to the closure, including the CQA requirements and location and date of cover placement. Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 2 1.5 Required Closure Schedule The Operator shall close the landfill in increments as various areas are brought to final grade. The final cap shall be placed on such areas subject to the following:  No later than 30 days following last receipt of waste;  No late that 30 days following the date that an area of 10 acres or greater is within 15 feet of final grades;  No later than one year following the most recent receipt of waste if there is remaining capacity. Final closure activities shall be completed within 180 days following commencement of the closure, unless the Division grants extensions. Upon completion of closure activities for each area (or unit) the Owner shall notify the Division in writing with a certification by the Engineer that the closure has been completed in accordance with the approved closure plan and that said documentation has been placed in the operating record. 1.6 Recordation The Owner shall record on the title deed to the subject property that a CDLF has been operated on the property and file said documentation with the Register of Deeds. Said recordation shall include a notation that the future use of the property is restricted under the provision of the approved closure plan. 2 CLOSURE PLAN The following is a tentative closure plan for Phases 1 and 2 of the CDLF, based on the prescribed operational sequence and anticipated conditions at the time of closure. 2.1 Final Cap Installation 2.1.1 Final Elevations – Final elevation of the landfill shall not exceed those depicted on Drawings E2-E5 when it is closed, subject to approval of this closure plan. The elevations shown include the final cover. A periodic topographic survey shall be performed to verify elevations. 2.1.2 Final Slope Ratios – All upper surfaces shall have at least a 5 percent slope, but not greater than a 10 percent slope. The cover shall be graded to Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 3 promote positive drainage. Side slope ratios shall not exceed 3H:1V. A periodic topographic survey shall be performed to verify slope ratios. 2.1.3 Final Cover Section – The terms “final cap” and “final cover” both apply. The final cover will subscribe to the minimum regulatory requirement for C&D landfills:  An 18-inch thick compacted soil barrier layer (CSB), i.e., the “infiltration layer,” with a hydraulic conductivity not exceeding 1 x 10-5 cm/sec, overlain by  An 18-inch thick “topsoil” or vegetated surface layer (VSL), i.e., the “erosion layer.” 2.1.4 Final Cover Installation – All soils shall be graded to provide positive drainage away from the landfill area and compacted to meet applicable permeability requirements (see Section 4.0). Suitable materials for final cover soil shall meet the requirements defined above. Care shall be taken to exclude rocks and debris that would hinder compaction efforts. The surface will then be seeded in order to establish vegetation. Test Pad – Whereas the lab data indicate that the required permeability is attainable, the ability to compact the materials in the field to achieve the required strength and permeability values shall be verified with a field trial involving a test pad, to be sampled with drive tubes and laboratory density and/or permeability testing, prior to full-scale construction. The materials, equipment, and testing procedures should be representative of the anticipated actual final cover construction. The test pad may be strategically located such that the test pad may be incorporated into the final cover. Compacted Barrier – Materials shall be blended to a uniform consistency and placed in three loose lifts no thicker than 9 inches and compacted by tamping, rolling, or other suitable method to a thickness of 6 inches – the targeted final thickness of the barrier layer is 18 inches minimum. A thicker compacted barrier is acceptable. The cover shall be constructed in sufficiently small areas that can be completed in a single day (to avoid desiccation, erosion, or other damage), but large enough to allow ample time for testing without hindering production. The Contractor shall take care not to over-roll the cover such that the underlying waste Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 4 materials would pump or rut, causing the overlying soil layers to crack – adequate subgrade compaction within the upper 36 inches of waste materials and/or the intermediate cover soil underlying the final cover is critical. All final cover soils shall be thoroughly compacted through the full depth to achieve the required maximum permeability required by Division regulations of 1.0 x 10-5 cm/sec, based on site-specific test criteria (see below). Vegetated Surface Layer – Materials shall be blended and placed in two loose lifts no thicker than 12 inches and compacted by tamping, rolling, or other suitable method – the targeted final layer thickness is 18 inches minimum per the design criteria. A thicker soil layer is acceptable. A relatively high organic content is also desirable. The incorporation of decayed wood mulch or other organic admixtures (WWTP sludge, with advance permission from the Division) is encouraged to provide nutrient and enhanced field capacity. These surface materials are not subject to a permeability requirement, thus no testing will be specified. Care should be taken to compact the materials sufficiently to promote stability and minimize erosion susceptibility, but not to over-compact the materials such that vegetation would be hindered. Following placement and inspection of the surface layer, seed bed preparation, seeding and mulching should follow immediately. The work should be scheduled around the weather. Inspection and Testing – Soils for the barrier layer are subject to the testing schedule outlined in the Construction Quality Assurance plan (see Section 4.0). The proposed testing program includes a minimum of one permeability test per lift per acre and four nuclear density gauge tests per lift per acre, to verify compaction of the compacted barrier layer. The moisture-density-permeability relationship of the materials has been established by the laboratory testing (discussed elsewhere in this report). The Contractor shall proof roll final cover subgrade materials (i.e., intermediate cover), which consist of essentially the same materials as the compacted barrier layer (without the permeability requirements), to assure that these materials will support the final cover. 2.1.5 Final Cover Vegetation – Seedbed preparation, seeding, and mulching shall be performed accordance the specifications provided in the Facility Plans (see Drawing SC1), unless approved otherwise (in advance) by the Engineer). In areas to be seeded, fertilizer and lime typically should be distributed uniformly at a rate of 1,000 pounds per acre for fertilizer and 2,000 pounds per acre for lime, and incorporated into the soil to a depth of at least 3 inches by disking and harrowing. The incorporation of the fertilizer and lime may be a part of the cover Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 5 placement operation specified above. Distribution by means of an approved seed drill or hydro seeder equipped to sow seed and distribute lime and fertilizer at the same time will be acceptable. Please note the seeding schedule varies by season. All vegetated surfaces shall be mulched with wheat straw and a bituminous tack. Areas identified as prone to erosion mat be secured with curled-wood excelsior, installed and pinned in accordance with the manufacturer’s recommendations. Certain perimeter channels will require excelsior or turf-reinforcement mat (TRM), as specified in the Channel Schedule. Alternative erosion control products may be substituted with the project engineer’s prior consent. All rolled erosion control materials should be installed according to the generalized layout and staking plan found in the Construction Plans or the manufacturer’s recommendations. Irrigation for landfill covers is not a typical procedure, but consideration to temporary irrigation may be considered if dry weather conditions prevail during or after the planting. Care should be taken not to over-irrigate in order to prevent erosion. Collected storm water will be suitable for irrigation water. Maintenance of the final cover vegetation, described in the Post-Closure Plan (see below), is critical to the overall performance of the landfill cover system. 2.1.6 Documentation – The Owner shall complete an “as-built” survey to depict final elevations of each final cover layer, i.e., top of the intermediate cover layer, top of the compacted soil barrier, and top of the vegetated soil layer, along with construction narrative to document any problems, amendments or deviations from the plan drawings. Records of all testing, including maps with test locations, shall be prepared by the third-party CQA testing firm. All materials pertaining to the closure shall be placed in the Operational Record for the facility. Whereas the closure will be incremental, special attention shall be given to keeping the closure records separate from the normal operational records. 2.2 Maximum Area/Volume Subject to Closure The largest anticipated area that will require final closure at any one time within the next 5-year period is 6 acres. Intermediate cover shall be used on areas that have achieved final elevations until the final cover is installed. An annual adjustment is required by the Division for the open area (and the bond requirement). Based on the volumetric analysis (Appendix 1), the volume of Phase 1 and the remainder of Phase 2 are 1,248,871 cubic yards (Section 1.3). Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 6 2.3 Closure Schedule Refer to the requirements outlined in Section 1.5 (above). 2.4 Closure Cost Estimate The following cost estimate is considered suitable for the Financial Assurance requirements. The Owner intends to recertify incremental sections of Phase 1, as Phase 2 and then Phase 1 are closed to maintain a consistent area of open landfill and therefore maintain a consistent closure area for the financial assurance cost estimate. Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 7 TABLE A ESTIMATED FINAL CLOSURE COSTS FOR PHASES 1 AND 2A (2016 DOLLARS) 1 VSL (topsoil)2 – 6.1 ac 16,976 c.y. @ $4.00 / cubic yard $67,904 CSB (barrier)2 – 6.1 ac 16,976 c.y. @ $10 / cubic yard $ 169,760 Establish Vegetation 6.1 acres @ $1,800 per acre $ 10,980 Storm Water Piping 3 100 LF @ $35.00 / LF $ 3,500 Erosion Control Stone 3 5 tons @ $40.00 / ton $ 200 Cap Gas Vents (3/acre) 18 @ $100 ea $ 1,800 Testing and Surveying 4 Estimated 15 percent of above $ 38,122 Contingency Estimated 10 percent of above $ 25,414 Total Closure Construction Cost (if contracted out) $ 317,680 Notes: 1 Intended to represent likely third-party construction costs (hired contractor, not the Owner/Operator), based on knowledge of local construction costs for similar projects – these estimates provided to meet NC DEQ Division of Waste Management financial assurance requirements; actual costs may be lower for construction performed by the Owner/Operator; final closure work will be performed incrementally, spreading out the costs over the life of the project. 2 Includes soil work for regulatory requirements of 15A NCAC 13B .0543, i.e., a minimum of 18 inches of compacted soil barrier (max. permeability of 1 x 10-5 cm/sec) and 18 inches of topsoil (total soil thickness is 36 inches). For the compacted soil barrier, use a shrinkage factor of 15%; costs include surface preparation, soil procurement and transport costs, soil placement and compaction, machine/equipment costs, fuel costs 3 Conservative estimate based on similar project history; includes materials and installation 4 Includes Construction document and bidding, construction administrative fee, CQA field monitoring and lab testing, CQA reporting and certification, final survey for as-built drawings, recordation/notation fee Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 8 3 POST-CLOSURE PLAN 3.1 Monitoring and Maintenance 3.1.1 Term of Post-Closure Care – The facility shall conduct post-closure care for a minimum of 30 years after final closure of the landfill, unless justification is provided for a reduced post-closure care period. The post-closure care period may be extended by the Division if necessary to protect human health and the environment. 3.1.2 Maintenance of Closure Systems – Inspections of the final cover systems and sediment and erosion control (S&EC) measures shall be conducted quarterly. Maintenance will be provided during post-closure care as needed to protect the integrity and effectiveness of the final cover. The cover will be repaired as necessary to correct the effects of settlement, subsidence, erosion, or other events. Refer to the Post Closure Monitoring and Maintenance Schedule (below). 3.1.3 Ground Water Monitoring – Groundwater monitoring will be conducted under the current version of the approved Sampling and Analysis Plan (see Appendix 7). This plan will be reviewed periodically and may change in the future. Approximately one year prior to the landfill reaching permitted capacity, the facility will submit post-closure monitoring and maintenance schedules, specific to the ground water monitoring. Procedures, methods, and frequencies will be included in this plan. This future plan, and all subsequent amendments, will be incorporated by reference to this document. 3.1.4 Landfill Gas Monitoring – Quarterly landfill gas (LFG) monitoring will be conducted during the operational period and for at least 30 years following closure. Post closure monitoring will be a continuation of the operational monitoring program (see Appendix 8), subject to amendment as might be required by the Solid Waste Section (SWS) resulting from rule changes or conditions indicated by the data. The primary concern is the potential for migration of explosive gas (chiefly methane), although the potential is relatively low for this facility. The regulations require that LFG levels remain below 100 percent of the lower Explosive Level (LEL) – approximately 5 percent methane by volume in air or soil gas – at the facility boundary and below 25 percent of the LEL within on-site Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 9 structures. The plan includes monitoring requirements and procedures, as well as contingency activities to be implemented if regulatory thresholds are exceeded. Locations for the initial detection monitoring of methane were based on site conditions (physical barriers to gas migration, i.e. surface streams), the presence of man-made conduits for potential gas migration (i.e., pipelines), and past experience with numerous gas monitoring and remediation programs at other facilities. The bar-hole punch tests are intended to provide early indication of gas migration outside the waste unit boundary, accomplished by monitoring the backfill zones of the pipelines and other locations, including the up-gradient soils where the porous saprolite and groundwater are deep. The original LFG monitoring locations are shown on Drawing M1. If the data so warrant, future consideration will be given to permanent gas sampling probes, using the bar hole punch data as a guide for selecting the probe locations. 3.1.5 Record Keeping – During the post closure period, maintenance and inspection records, i.e., a Post Closure Record, shall be kept as a continuation of the Operating Record that was kept during the operational period. The Post Closure Record shall include future inspection and engineering reports, as well as documentation of all routine and non-routine maintenance and/or amendments. The Post Closure Record shall include the ground water and gas monitoring records collected for the facility. 3.1.6 Certification of Completion – At the end of the post-closure care period the facility manager shall contact the Division to schedule an inspection. The facility manager shall make the Post Closure Record available for inspection. A certification that the post-closure plan has been completed, signed by a North Carolina registered professional engineer, shall be placed in the operating/post closure record. C&D Landfill, Inc. shall maintain these records indefinitely. Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 10 TABLE B POST-CLOSURE MONITORING AND MAINTENANCE SCHEDULE Activity Frequency Yrs. 1 - 5 Frequency Yrs. 6-15 Frequency Yrs. 16-30 General - Inspect access gates, locks, fences, signs, site security Quarterly Quarterly Quarterly Maintain access roads, monitoring well access As needed As needed As needed Final Cover Systems/Stability - Inspect cap and slope cover for erosion, sloughing, bare spots in vegetation, make corrections as needed (1) Quarterly Semi- Annually Annually Storm Water/Erosion Control Systems - Inspect drainage swales and sediment basin for erosion, excess sedimentation (1) Quarterly Semi- Annually Annually Mow cover vegetation and remove thatch Semi-Annually Annually None (2) Inspect vegetation cover and remove trees Annually Annually Annually Landfill Gas Monitoring Quarterly (3) Quarterly (3) Quarterly (3) Ground Water Monitoring System - Check well head security, visibility Semi-Annually Semi- Annually Semi- Annually Ground Water Monitoring (4) Semi-Annually Semi- Annually Semi- Annually Notes: 1. Inspect after every major storm event, i.e., 25-year 24-hour design storm 2. Dependent on vegetation type, periodic mowing may be required 3. The Solid Waste Section may be petitioned for discontinuation of gas monitoring if no detections occur in gas sampling locations or on-site buildings 4. See current Ground Water Sampling and Analysis Plan Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 11 3.2 Responsible Party Contact Mr. Al Morton – Managing Member Morton and Sewell Land Company, LLC 385 Gold Hill Road Asheboro, NC 27203 Tel. 336-629-7175 3.3 Planned Uses of Property Currently, there is no planned use for the landfill area following closure. The closed facility will be seeded with grass to prevent erosion. Any post-closure use of the property considered in the future will not disturb the integrity of the final cover or the function of the monitoring systems unless necessary (and to be accompanied by repairs or upgrades). Future uses shall not increase the potential threat to human health and the environment. 3.4 Post-Closure Cost Estimate The following cost estimate is considered representative of post-closure care costs for Financial Assurance. This calculation includes all of Phase 1 and Phase 2B, approximately 14 acres. Morton and Sewell Land Company, LLC (Permit 76-06) Operations Plan Update 12 TABLE C ESTIMATED POST-CLOSURE COSTS PHASES 1A AND 2 (IN 2016 DOLLARS) Annual Events Units Unit Cost Cost/ Event Annual Costs Reseeding/mulching and erosion repair (Assume 5% of 15.38 ac., once per year) 1 ac. $1,300 $1,313.00 $1,313.00 Mow final cap (twice per year) 15.38 ac. $25 $384.50 $769.00 Ground Water (semi-annual, 5 wells)* 7 ea. $400 $2800.00 $5600.00 Surface Water (semi-annual, 4 locations)* 4 ea. $350 $1,400.00 $2800.00 Water quality analysis and reporting 2 ea. $1250 $1250.00 $5,000.00 Landfill Gas Monitoring (quarterly) 4 ea. $500 $500.00 $2000.00 Engineering inspection (annual basis) 1 ea. $1,350 $1,350.00 $1,350.00 Maintain storm water conveyances 1 ea. $1,000 $1,000.00 $1,000.00 Maintain access roads, gates, buildings 1 ea. $1000 $1,000.00 $1,000.00 *Appendix I Detection Monitoring (Section 9.0) Total Estimated Annual Cost $20,832.00 Projected 30 year cost (2016$) $624,960.00 Appendix 7 Ground Water Monitoring Plan Appendix 8 Landfill Gas Monitoring Plan Gold Hill Road CDLF (Permit 76-06) Landfill Gas Monitoring Plan | | Landfill Gas Monitoring Plan Gold Hill Road C&D Landfill Solid Waste Permit 7606-CDLF-2001 Submitted to: NCDEQ Division of Waste Management Solid Waste Section 217 W Jones Street Raleigh, NC 27603 Presented To: Morton and Sewell Land Company, LLC 385 Gold Hill Road Asheboro, North Carolina 27203 Presented By: SCS ENGINEERS 322 Chapanoke Road, Suite 101 Raleigh, NC 27603 (919) 662-3015 March 1, 2016 File No. 02214705.00 Gold Hill Road CDLF (Permit 76-06) Landfill Gas Monitoring Plan i  Table of Contents Section Page 1.0 INTRODUCTION ........................................................................................................ 2  1.1 Background Information ...................................................................................... 2  1.2 Current Site Conditions ........................................................................................ 3  1.3 Regulatory Requirements .................................................................................... 3  1.4 Rationale for LFG Sampling Locations .................................................................. 4  2.0 LFG MONITORING .................................................................................................... 4  2.1 Locations and Logistics ......................................................................................... 4  2.2 Structures and Ambient Sampling ....................................................................... 5  2.3 Sampling Schedule ............................................................................................... 5  3.0 LFG SAMPLING PROGRAM ....................................................................................... 6  3.1 Equipment and Calibration .................................................................................. 6  3.2 LFG Sampling Procedures ..................................................................................... 6  4.0 RECORD KEEPING AND REPORTING ......................................................................... 7  5.0 CONTINGENCY PLAN ................................................................................................ 8  6.0 PROFESSIONAL CERTIFICATION ............................................................................... 9  Attachments 1 Drawing M1 Monitoring Locations 2 LFG Monitoring Well Schematic 3 LFG Monitoring Form Gold Hill Road CDLF (Permit 76-06) Landfill Gas Monitoring Plan 2  1.0 INTRODUCTION The following plan has been prepared as a standalone document in accordance with current NCDENR Solid Waste Section (SWS) guidance, pertaining to methane and hydrogen sulfide (H2S) monitoring. The monitoring locations, methods, and thresholds for action have not changed, but the 2010 guidance document requires that attention be given specifically to well construction, equipment calibration, sampling procedures, and data keeping, in a plan that is organized in a standardized format. Landfill staff and monitoring personnel should view the SWS document “Landfill Gas Monitoring Guidance,” November 2010, available online at: http://portal.ncdenr.org/c/document_library/get_file?uuid=da699f7e-8c13-4249-9012- 16af8aefdc7b&groupId=38361. 1.1 Background Information Monitoring of landfill gas (LFG) is required at C&D landfills by Solid Waste Rule 15A NCAC 13B .0544. Landfill gas is a by-product from the decomposition of organic waste in a sanitary landfill, including certain C&D wastes. Landfill gas typically comprises about 50 percent methane, which can be explosive under certain conditions, as well as carbon dioxide, nitrogen, water, and small amounts of hydrogen sulfide. LFG has been known to promote the migration of contaminants into ground water. The Solid Waste Rules typically focus on the explosive properties from a public safety standpoint. Landfill gas migrates in soil above the ground water table and is restricted laterally by streams. Highly porous soils that tend to occur near the soil-rock interface within the Piedmont are considered to be a good pathway for gas migration. Past experience suggests that up-gradient areas should be targeted for monitoring, especially if porous soils are present. In addition, this zone typically is an aquifer, thus fluctuations in the water table will affect the gas migration pattern or rate, as does surface saturation, frozen soils, and variation in barometric pressure. The Guidance suggests that the ideal time to sample for subsurface gas is during times of low barometric pressure. Pipelines and other utility trenches can serve as pathways for gas migration, with the potential to convey gas for considerable distances. Open landfills are not as likely to experience subsurface gas migration, but once a low permeability cover is installed, lateral migration into adjacent soils may be more likely if gas is present. Gold Hill Road CDLF (Permit 76-06) Landfill Gas Monitoring Plan 3  1.2 Current Site Conditions The subject landfill occupies the west side of a broad, north-south oriented ridge. Site elevations vary from approximately El. 850 on a rocky knoll located near the facility entrance to El. 740 along the banks of Penwood Branch. The property is bound to the east by Gold Hill Road, to the south by Presnell Avenue, to the west by Penwood Branch, to the north by undeveloped property, separated from the active disposal area by a deep ravine containing a seasonal stream. Topographic relief near the streams is moderately steep to very steep, with elevation changes from the footprint to the streams on the order of 10 feet on the west side. Ground water contours reflect the surface topography, which slopes moderately but steadily to the west. Within the mid- to upper elevations, groundwater occurs at a depth of approximately 15 - 25 feet beneath the surface. In the lower elevations, west of the CDLF footprint, groundwater levels are approximately 5 – 10 feet beneath the surface. The landfill is unlined and is mostly excavated below the original surface to the approved base grades, except along the narrow floodplain of Penwood Branch, where embankment heights of approximately 4 to 8 feet exist. Onsite soils are mostly clayey silt, weathered in-situ from meta-volcanic bedrock. These soils are porous but exhibit low permeability. The approved base grades are a minimum of 14 feet above the level of the streams and a minimum of 4 feet above groundwater and/or bedrock. Lateral separation is 200 feet minimum to the property lines and 50 feet minimum to the streams. Site conditions are restrictive to offsite gas migration in all directions except the east. On the up-gradient (east) side the topography increases approximately 20 feet between the approved footprint and the nearest occupied structure, i.e., the scale house. The nearest dwellings are located approximately 975 feet from the approved disposal footprint to the northeast and 775 feet to the east. No deep utility trenches or pipelines are known in the vicinity. No occupied structures appear to be at risk for gas migration near this facility. 1.3 Regulatory Requirements Thresholds that trigger responsive action are methane levels of 100 percent of the LEL, (the lower explosive limit, about 5 percent by volume) in soil-gas or air at the facility boundary; 25 percent of the LEL within onsite structures, not limited to just buildings but inclusive of drainage structures and utility vaults; zero in off-site structures. Solid Waste Section guidance requires that LFG be monitored with a calibrated meter that is capable of detecting hydrogen sulfide, whereas the action limits are 4% by volume at 100% LEL and 1% by volume at 25% LEL. Gold Hill Road CDLF (Permit 76-06) Landfill Gas Monitoring Plan 4  1.4 Rationale for LFG Sampling Locations Six soil-gas monitoring points are located around the footprint at locations approved during earlier permitting (see Drawing M1). Points LFG-1, LFG-2 and LFG-6 are located on the up gradient side of the unlined landfill, opposite of ground water flow. Points LFG-3 through LFG-5 are located downgradient, albeit the topography of these locations and the water table make it unlikely that landfill gas would migrate in those directions (at least not very far). A future point, LFG-7 is located to provide uniform spacing in the upgradient direction, with the unlikelihood of any soil-gas migrating more than a few 10’s of feet from the landfill perimeter. The new sampling point will be situated within 50 feet of the waste boundary, as are the other sampling locations. 2.0 LFG MONITORING 2.1 Locations and Logistics LFG monitoring for this facility currently consists of sampling soil-gas adjacent to the landfill footprint via bar-hole punch test locations spaced approximately 500 foot apart (see Drawing M1 in Attachment 1). The locations reflect the emphasis on the up gradient side to the east, which is the only likely direction for offsite gas migration. The LFG monitoring points are situated between the footprint and the nearest areas accessible by the public, i.e., the scale house and the public streets, where the migration of gas (if present) could travel off-site via shallow utility trenches and/or bedrock fractures. The facility management’s intention is to implement the new monitoring point to the southwest of future Phase 1B once that phase is built. The bar-hole punch test was prescribed and approved for the facility ca. 2012, whereas the waste is comprised of mostly inert materials and landfill gas migration potential is limited by topography and natural barriers. The waste stream does contain paper, wood, and other potentially combustible materials – the same kind of materials that can degrade slowly to form landfill gas – along with sheetrock which can degrade to produce hydrogen sulfide, so depending on future data trends, it is conceivable that at some future time the Solid Waste Section may require permanent gas monitoring wells for this facility (see Attachment 2). Due to the age of the waste, it is likely that reactions leading to the production of landfill gas are becoming more active. In anticipation of possible future requirements, this plan presents procedures for both bar- hole punch tests and sampling of monitoring wells. A SWS-endorsed well construction schematic is provided, which includes sealed construction and a specialized port at the Gold Hill Road CDLF (Permit 76-06) Landfill Gas Monitoring Plan 5  top to facilitate sampling. Presumably, the monitoring wells would be located near the same points as currently monitored with the bar-hole punch test, for the same reasoning described above. This plan will be amended in the future to include data tables for the LFG monitoring wells, if required. Data recording protocols will remain the same. Landfill gas monitoring will be performed quarterly during the active life of the landfill, estimated at 20 years, and throughout the post-closure care period, 30 years unless future data warrant a schedule revision, which will be subject to approval by the SWS. 2.2 Structures and Ambient Sampling Within the offices and any future buildings on-site, atmospheric sampling for methane shall be conducted. Methane is heavier than air and tends to accumulate in the lower zones with restricted circulations, i.e., crawlspaces, closets, and corners of rooms near the floor, cracks in walls, floor slabs, or foundations, crawlspace vents, drainage pipes, and utility vaults (excluding sanitary sewer manholes). Methane detection in and around the structures, though unlikely, would signify a problem such that the site manager should be notified – immediate action may be required – refer to the Contingency Plan (Section 5). Ambient monitoring overlaps the building foundations and includes a “walk-around” at the toe of covered (vegetated) slopes to survey for gas that may be seeping through the cover. A key to potential side slope seepage includes stained soil, wetness with visible bubbling, or distressed (or absent) vegetation. Any detection of methane in the ambient monitoring should be noted on a site map and a special notation recorded in the monitoring report. Follow up sampling or close attention in future sampling events might be warranted. The site manager should be alerted to any ambient gas detection. 2.3 Sampling Schedule Quarterly methane and hydrogen sulfide monitoring will be conducted at all subsurface gas detection locations and in all occupied structures located on the landfill property. In addition, enclosed structures, such as manholes, utility vaults, and buried drainage pipes should be checked for gas prior to servicing, in addition to the routine monitoring. The passive gas vents for the final cover, when installed, are not required to be monitored. Monitoring times are also important when conducting landfill gas monitoring. Proper landfill gas monitoring should include sampling during times when landfill gas is most likely to migrate. LFG monitoring should be conducted when the barometric pressure is low and avoiding times when soils are saturated or when the ground is frozen or covered with ice or snow. Gold Hill Road CDLF (Permit 76-06) Landfill Gas Monitoring Plan 6  3.0 LFG SAMPLING PROGRAM 3.1 Equipment and Calibration The Facility enlists the services of an experienced third-party firm to conduct the monitoring. That firm utilizes a landfill gas instrument that meets the requirements of SWS Landfill Gas Monitoring Guidance with respect to detecting methane, oxygen, carbon dioxide, and hydrogen sulfide. Calibration shall occur prior to instrument use and according to the manufacturer’s specifications. Should this element of the program change, this plan will be amended accordingly. 3.2 LFG Sampling Procedures The following procedure is recommended for conducting landfill gas monitoring well sampling and/or bar-hole punch testing (shown in italics). The sampling equipment shall consist of a good-quality gas meter capable of detecting methane (LEL) and oxygen levels – most modern meters include carbon monoxide or carbon dioxide, depending on the meter and hydrogen sulfide readings. In deference to the professionals who have conducted the sampling for years, these procedures are guidelines; no changes to the current sampling program are warranted. Step 1 Calibrate the instrument according to the manufacturer’s specifications. In addition, prepare the instrument for monitoring by allowing it to properly warm up as directed by the manufacturer. Make sure the static pressure shows a reading of zero on the instrument prior to taking the first sample. Step 2 Purge sample tube for at least one minute prior to taking reading. Connect the instrument tubing to the landfill gas monitoring well cap fitted with a stopcock valve or quick connect coupling. Step 2 Drive the bar into the ground to a depth of 3 feet at the sampling location Alternate using a hammer or backhoe bucket. Heavy gauge rebar is ideal for this task. The bar-hole needs to be near-vertical and free of obstructions. Drilling a hole with a modified concrete drill (an extension is required to reach the desired depth) has been demonstrated to expedite the making of a boring with less smearing of the side walls. Gold Hill Road CDLF (Permit 76-06) Landfill Gas Monitoring Plan 7  Step 3 Open the valve and record the initial reading and then the stabilized reading. A stable reading is one that does not vary more than 0.5 percent by volume on the instrument’s scale. Step 3 Cover the hole upon extraction of the drill to retain any gas present. Alternate Without completely lifting the cover, gently insert the sampling tube beneath the cover and obtain an initial reading. Allow time for a stabilized reading as described above. Step 4 Record the stabilized reading including the oxygen concentration and barometric pressure. A proper reading should have two percent oxygen by volume or less. If levels of oxygen are higher, it may indicate that air is being drawn into the system giving a false reading. Step 5 Turn the stopcock valve to the off position and disconnect the tubing. Step 5 Backfill the hole with cuttings or native soil; tamp the backfill with a rod or Alternate equipment handle. Step 6 Proceed to the next landfill gas monitoring well and repeat Steps 2 – 5. 4.0 RECORD KEEPING AND REPORTING The sampling technician shall record the date, time, location, sampling personnel, calibration data, gas pump rate, barometric pressure (from local weather reports), ambient temperature, general weather conditions at the time of sampling, initial and stabilized concentrations of methane and H2S (see the Landfill Gas Monitoring Data Form in Attachment 3). These records shall be left in the landfill office upon completion and maintained as part of the operating record. Should methane be detected at any sampling location, the facility manager should be notified and, depending on the concentrations, a report to the Solid Waste Section might be warranted. In any event a qualified engineer should be consulted. Gold Hill Road CDLF (Permit 76-06) Landfill Gas Monitoring Plan 8  5.0 CONTINGENCY PLAN Solid Waste Rule .0544 (d) (3) requires the following responses in the event that methane and/or hydrogen sulfide concentrations are detected that exceed the regulatory limits: A Immediately take all steps necessary to ensure protection of human health and notify the Division – at a minimum, occupied structures should be evacuated and ventilated until the methane concentrations subside; close monitoring of structures shall be implemented; for facility boundary violations, further evaluation is warranted, subject to notification and approval by the Division. B Within seven days of detection, place in the operating record the methane or explosive gas levels detected and a description of the steps taken to protect human health; C Within 60 days of detection, implement a remediation plan for the methane or explosive gas releases, place a copy of the plan in the operating record, and notify the Division that the plan has been implemented. The plan must describe the nature and extent of the problem and the proposed remedy. D Based on the need for an extension demonstrated by the operator, the Division may establish alternative schedules for demonstrating compliance with the limits. E "Lower explosive limit" means the lowest percent by volume of a mixture of explosive gases in air that will propagate a flame at 25o C at atmospheric pressure. F Upon completion of mitigation activities, a thorough report shall be placed in the operating record to document the incident and outcome. Gold Hill Road CDLF (Permit 76-06) Landfill Gas Monitoring Plan 9  6.0 PROFESSIONAL CERTIFICATION The certification statement below must be signed and sealed by a North Carolina Professional Geologist or Professional Engineer and submitted with the Landfill Gas Monitoring Plan. The landfill gas monitoring plan for this facility has been prepared by a qualified geologist or engineer who is licensed to practice in the State of North Carolina. The plan has been prepared based on first-hand knowledge of site conditions and familiarity with North Carolina solid waste rules and industry standard protocol. This certification is made in accordance with North Carolina Solid Waste Regulations, indicating this Landfill Gas Monitoring Plan should provide early detection of any release of hazardous constituents to the uppermost aquifer, so as to be protective of public health and the environment. No other warranties, expressed or implied, are made. Signed _______________________________ Printed ___G. David Garrett, PG, PE_______ Date _____March 1, 2016_____________ Not valid unless this document bears the seal of the above mentioned licensed professional. If wells are installed in the future, the well locations shall be shown on a topographic map that is signed and sealed by a registered surveyor. ATTACHMENT 1 MONITORING LOCATION MAP This page intentionally left blank SCS ENGINEERS, PC 2520 WHITEHALL PARK DRIVE, SUITE 450 CHARLOTTE, NORTH CAROLINA 28273 PHONE: (704) 504-3107 FAX: (704) 504-3174 CLIENT DATEREVISIONN0. PROJECT TITLE SHEET TITLE APP. BY: Q/A RVW BY: CHK. BY: DWN. BY: DSN. BY: PROJ. NO. D A T E : S C A L E : D R A W I N G N O . 1 1 A S S H O W N F E B R U A R Y 2 0 1 6 02214705.00 GDG KEM GDG GDG GDG MORTON AND SEWELL LAND COMPANY 385 GOLD HILL ROAD ASHEBORO, NC 27203 (336) 629-7175 GROUNDWATER AND LANDFILL MONITORING PLAN GOLD HILL ROAD CDLF 2015 PERMIT #70-06 MODIFICATION M 1 ATTACHMENT 2 LFG MONITORING WELL SCHEMATIC This page intentionally left blank     Figure 1 – Landfill Gas Monitoring Well Detail  ATTACHMENT 3 LFG MONITORING FORM This page intentionally left blank NC Division of Waste Management - Solid Waste Section Landfill Gas Monitoring Data Form Notice: This form and any information attached to it are "Public Records" as defined in NC General Statute 132-1. As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6). Facility Name: Permit Number: Date of Sampling: NC Landfill Rule (.0500 or .1600): Name and Position of Sample Collector: Type and Serial Number of Gas Meter: Calibration Date of Gas Meter: Date and Time of Field Calibration: Type of Field Calibration Gas (15/15 or 35/50): Expiration Date of Field Calibration Gas Canister: Pump Rate of Gas Meter: Ambient Air Temperature: Barometric Pressure: General Weather Conditions: Instructions: Under “Location or LFG Well” identify the monitoring wells or describe the location for other tests (e.g., inside buildings). A drawing showing the location of test must be attached. Report methane readings as both % LEL and % CH4 by volume. A reading in percent methane by volume can be converted to % LEL as follows: % methane by volume = % LEL/20 Location or LFG Well ID Sample Tube Purge Time Time Pumped (sec) Initial %LEL Stabilized %LEL %CH4 by volume %O2 %CO2 %H2S Notes If your facility has more gas monitoring locations than there is room on this form, please attach additional sheets listing the same information as contained on this form. Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct. I am aware that there are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment. SIGNATURE TITLE Gold Hill Road CDLF (Permit 76-06) Landfill Gas Monitoring Plan | | Landfill Gas Monitoring Plan Gold Hill Road C&D Landfill Solid Waste Permit 7606-CDLF-2001 Submitted to: NCDEQ Division of Waste Management Solid Waste Section 217 W Jones Street Raleigh, NC 27603 Presented To: Morton and Sewell Land Company, LLC 385 Gold Hill Road Asheboro, North Carolina 27203 Presented By: SCS ENGINEERS 322 Chapanoke Road, Suite 101 Raleigh, NC 27603 (919) 662-3015 March 1, 2016 File No. 02214705.00 Gold Hill Road CDLF (Permit 76-06) Ground Water Monitoring Plan i  Table of Contents Section Page 1.0 Introduction ......................................................................................................................... 1  1.1 Background ...................................................................................................................... 1  1.2 Monitoring Location Criteria ........................................................................................... 2  2.0 Sampling Schedule and Term .............................................................................................. 2  3.0 Record Keeping and Reporting ............................................................................................ 3  3.1 Sampling Reports ............................................................................................................. 3  3.2 Well Abandonment/Rehabilitation ................................................................................. 3  3.3 Additional Well Installations ........................................................................................... 4  3.4 Well Maintenance ........................................................................................................... 5  3.5 Implementation Schedule ............................................................................................... 5  3.6 Modifications and Revisions ............................................................................................ 5  4.0 Certification ......................................................................................................................... 5  Tables 1 Monitoring Well Construction Data 2 Required Analytical Parameters Figures 1 Type 3 Monitoring Well Schematic (Lower Aquifer) 2 Type 2 Monitoring Well Schematic (Upper Aquifer) Attachments 1 Drawing M1 Monitoring Locations 2 Solid Waste Section Guidelines for Groundwater, Soil, and Surface Water Sampling, State Of North Carolina Department Of Environment And Natural Resources Division Of Waste Management Solid Waste Section, Rev 4-08* 3 New Guidelines for the Submittal of Environmental Monitoring Data, Solid Waste Section Memorandum, October 27, 2006 4 Environmental Monitoring Data Form 5 February 23, 2007 Addendum to the October 27, 2006 Memorandum 6 October 16, 2007 Memorandum 7 November 5, 2014 Memorandum 8 Monitoring well construction logs and 2013 Documentation Gold Hill Road CDLF (Permit 76-06) Ground Water Monitoring Plan 1  1.0 INTRODUCTION 1.1 Background Water quality monitoring for the Gold Hill Road construction and demolition debris landfill (CDLF) has been conducted since the facility opened in 2001. The facility is located at 375 Gold Hill Road just northeast of Asheboro, North Carolina. Public water is available in the vicinity, but a few water supply wells have been identified. None of the wells are downgradient of the facility. The site is within the Deep River basin but not within a critical watershed. The monitoring well network consists of nine wells – MW-1 (background), MW-19 (upgradient of Phase 1), MW-4 and MW-15 (cross gradient wells) and MW-8, MW-10A, MW16, 17 and 18 (down gradient). There are three surface water sampling locations along Penwood Branch – SW-3 (background), SW-2 and SW-3. Refer to Drawing M1 (Attachment 1). The monitoring network is based on site studies performed in 2001 and 2009 by others. Refer to Table 1 following this text for a summary of the well construction details. Monitoring well construction logs are presented in the Attachment 8. Currently only four wells are sampled, MW-1, MW-4, MW-10A, and MW-18, along with SW-2 and SW-3, per SWS approval of a request for reduction in the number of active wells in 2013 (Attachment 8). To date, no contaminants have been detected in either ground water or surface water sampling that can be attributed to the landfill. Detection stage water quality monitoring is required by 15A NCAC 13B .0544 (b)(5)(B). This Ground Water Monitoring Plan, also known as a Sampling and Analysis Plan (SAP), is an update of the original that reflects the current monitoring network and current protocols for sampling, analysis and reporting. The plan includes the reporting of “Solid Waste Section Limits” and the electronic data reporting format.1 The facility is required to undergo semi-annual detection stage sampling for Appendix I constituents and specific parameters unique to C&D Landfills (see Tables). It should be noted that the region is an historic mining district with abundant mineralization by metals. North Carolina solid waste regulations require monitoring of the “uppermost” aquifer – typically consisting of variably dense saturated saprolite derived from the weathering of underlying bedrock in Piedmont environments. The transition from soil to bedrock 1 Requirements are reproduced in Attachments 2 – 7 and found online at http://www.wastenotnc.org/swhome/EnvMonitoring/SolidWasteSamplingGuidance.pdf Gold Hill Road CDLF (Permit 76-06) Ground Water Monitoring Plan 2  within the zone is gradual and commonly irregular due to differential weathering characteristics of the parent rock. The wells are constructed with screen intervals in the saprolite, just above auger refusal conditions. Ground water movement is east to west from the higher elevations of the site toward a named blue-line stream (Penwood Branch). The monitoring wells are located to provide data from areas located up gradient of the landfill (background) and downgradient between the landfill and the streams (compliance wells). Stream sampling is performed up- and downgradient of the landfill. This Sampling and Analysis Plan (SAP) has been prepared to meet North Carolina’s monitoring requirements, including the following:  15A NCAC 13B .0544 (Solid Waste Construction and Demolition Rules)  15A NCAC 2C (Well Construction Rules)  15A NCAC 2L (Ground Water Classifications and Standards)  15A NCAC 27 (Well Contractor Certification Rules)  15A NCAC 2H (Water Quality Laboratory Certification Rules)  15A NCAC 02B .0200 (Stream Standards) 1.2 Monitoring Location Criteria Wells currently surround the entire CDLF footprint, but the 2013 modification focuses on monitoring just the Phase 2 footprint (the active CDLF). As Phase 1 is converted from LCID to CDLF per the 2009 permit modification, existing wells are to be reactivated into the routine sampling program. Well spacing is subject to review per the 5-year permitting cycle. A majority of the wells are within the customary review boundary, i.e., approximately 150 feet from the waste boundary, and no more than 50 feet inside the facility boundary. These well locations were selected by others based on topographic relationships, variable depths to bedrock, and a fracture trace analysis apparent from the local topography and reflected in the drilling data. 2.0 SAMPLING SCHEDULE AND TERM Sampling shall be conducted on a semi-annual basis, specifically once in the spring and once in the fall. Monitoring shall be conducted for the duration of operations and for a minimum of 30 years following final closure. Gold Hill Road CDLF (Permit 76-06) Ground Water Monitoring Plan 3  3.0 RECORD KEEPING AND REPORTING 3.1 Sampling Reports Copies of all laboratory analytical data shall be forwarded to the SWS semi-annually upon completion of the report and in accordance with the schedule outlined in the facility permit and regulations. In addition to the sampling results being submitted in Table format with a written report, the laboratory analytical data shall also be submitted electronically on the Solid Waste Section’s Electronic Data Template. Refer to Table 2 of this report for a list of the required constituents and reporting limits. These lists were updated in the October 27, 2006, memorandum and February 23, 2007, addendum from the Solid Waste Section. If limits are modified by the DWM, the most current ones will be used for reporting purposes. Reports with analytical data will be submitted in the required electronic format, accompanied by the required Environmental Monitoring Form (see Attachment 4), which shall be signed and sealed by a licensed geologist in the State of North Carolina. The submittal shall specify the date of sample collection, the sampling point identification, a map of the sampling locations, comparisons to applicable ground water and surface water standards. Should significant concentrations of contaminants be detected in groundwater and/or surface water during monitoring (per North Carolina Solid Waste Rules or Ground Water Quality Standards), the owner/operator shall notify the SWS and shall place a notice in the landfill records as to which constituents were detected. Analytical data, calculations, and other relevant ground water monitoring records shall be kept throughout the active life of the facility and the post-closure care period, including notices and reports of any North Carolina 2L Standard exceedance, re- sampling notifications, and re-sampling results. 3.2 Well Abandonment/Rehabilitation Should wells become irreversibly damaged or require rehabilitation, the SWS shall be notified. If monitoring wells and/or piezometers within unconsolidated formations are damaged irreversibly they shall be abandoned by over-drilling and/or pulling the well casing and plugging the well with an impermeable, chemically-inert sealant such as neat cement grout and/or bentonite clay. For bedrock wells the abandonment shall consist of plugging the interior well riser and screen with an impermeable neat cement grout and/or bentonite clay sealant. Piezometers in the waste footprint shall be abandoned by over Gold Hill Road CDLF (Permit 76-06) Ground Water Monitoring Plan 4  drilling the boring and backfilling with a bentonite-cement grout. All well repairs or abandonment shall be certified by a NC-licensed geologist or engineer. Samples withdrawn from the facility’s monitoring wells should be free of clay and silt; therefore, existing wells may require re-development from time to time based upon observed turbidity levels during sampling activities. If re-development of an existing monitoring well is required, it will be performed in a manner similar to that used for a new well as described below. 3.3 Additional Well Installations All additional monitoring wells (new or replacement) shall be installed under the supervision of a qualified geologist or engineer who is registered in North Carolina and who shall certify to the SWS that the installation complies with the North Carolina Regulations. Upon installation of future wells, the documentation for the construction of each well shall be submitted by the registered geologist or engineer after well construction, as specified in the permit to operate, once issued (Figures 1 and 2). Newly constructed wells will be developed to remove particulates that are present in the well due to construction activities, and to interconnect the well with the aquifer. Development of new monitoring wells will be performed no sooner than 24 hours after well construction. Wells may be developed with disposable bailers, a mechanical well developer, or other approved method. A surge block may be used as a means of assessing the integrity of the well screen and riser. In the event a pump is employed, the design of the pump will be such that any ground water that has come into contact with air is not allowed to drain back into the well. In general, each well will be developed until sediment-free water with stabilized field parameters (i.e., temperature, pH, and specific conductance) is obtained. Well development equipment (bailers, pumps, surge blocks) and any additional equipment that contacts subsurface formations will be decontaminated prior to on-site use, between consecutive on-site uses, and/or between consecutive well installations. The purge water will be disposed of on the ground surface at least 10 feet downgradient of the monitoring well undergoing purging, unless field characteristics suggest the water will need to be disposed of otherwise. If field characteristics suggest, the purge water will be containerized and disposed of by other approved disposal means. Gold Hill Road CDLF (Permit 76-06) Ground Water Monitoring Plan 5  3.4 Well Maintenance The existing monitoring wells will be used and maintained in accordance with design specifications throughout the life of the monitoring program. Routine well maintenance will include inspection and correction/repair of, as necessary, identification labels, concrete aprons, locking caps and locks, and access to the wells. Should it be determined that background or compliance monitoring wells no longer provide samples representative of the quality of ground water passing the relevant point of compliance, the SWS shall be notified. The owner shall re-evaluate the monitoring network and provide a plan to the SWS for modifying, rehabilitating, decommissioning, or installing replacement wells or additional monitoring wells, as appropriate. 3.5 Modifications and Revisions At some future time it may be appropriate to modify this plan, e.g. add or delete sampling locations or analytical parameters. Such changes may require approval from SWS. Also, this plan will be reviewed as new phases are developed and amended as needed. Refer to the revision section for the latest edition. 4.0 CERTIFICATION This water quality monitoring plan has been prepared by a qualified geologist who is licensed to practice in the State of North Carolina. The plan was prepared based on first- hand knowledge of site conditions and familiarity with North Carolina solid waste rules and industry standard protocol. In accordance with North Carolina Solid Waste Regulations, this Water Quality Monitoring Plan amendment should provide early detection of any release of hazardous constituents to the uppermost aquifer, so as to be protective of public health and the environment. No other warranties, expressed or implied, are made. Signed _______________________________ Printed ___G. David Garrett, PG, PE_______ Date _____March 1, 2016_____________ Not valid unless this document bears the seal of the above mentioned licensed professional. Tables Table 1 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 Well Ground TOC Stickup Groundwater Groundwater ID Elev. Elev. (feet) Top* Bottom Top Bottom Depth** Elevation Temp. C pH S.C. Turbidity (feet) (feet) (feet) (feet) (feet) (feet)uMho/cm (ntu) MW1 802.54 804.99 2.45 20.40 35.40 782.14 767.14 27.63 774.91 16 6.5 346 65.0 MW4 758.61 761.25 2.64 15.00 30.00 743.61 728.61 25.26 733.35 15 5.7 50 3.6 MW8 720.58 723.02 2.44 6.00 21.00 714.58 699.58 14.61 705.97 14 5.5 61 45.0 MW10A 733.20 735.78 2.58 15.00 30.00 741.67 703.20 23.17 710.03 14 5.3 50 36.0 MW15 751.67 754.12 2.45 10.00 25.00 732.78 726.67 12.36 739.31 14 5.9 150 80.0 MW16 742.78 745.20 2.42 10.00 25.00 717.43 717.78 19.96 722.82 15 6.2 259 22.0 MW17 732.43 734.67 2.24 15.00 30.00 712.59 702.43 19.54 712.89 15 6.3 185 4.0 MW18 722.59 724.50 1.91 10.00 25.00 697.59 697.59 9.92 712.67 14 5.7 91 25.0 MW19 782.81 784.76 1.95 20.00 35.00 747.81 747.81 17.86 764.95 15 6.5 236 6.7 * Referenced from ground surface **Referenced from top of casing ntu = Nephelometric Turbidity Units Sampling Date 3/19/2013 Screen Interval Screen Elevation Field Parameters NM = Not Measured S.C. = Specific Conductance Gold Hill Road CDLF 7/25/2013 Page 1 of 1 Table 2 Ground and Surface Water Analysis Methodology For Semi-Annual Detection Monitoring Inorganic Required Solid Waste North Carolina 2L** Constituent Section Limit (ug/l)* Ground Water Standard Antimony 6 1.4 *** Arsenic 10 50 Barium 100 2000 Beryllium 1 4 *** Cadmium 1 1.75 Chromium 10 50 Cobalt 10 70 *** Copper 10 1000 Lead 10 15 Nickel 50 100 Selenium 10 50 Silver 10 17.5 Thallium 5.5 0.28 *** Vanadium 25 3.5 *** Zinc 10 1050 Mercury 0.2 1.05 Chloride NE 250,000 Manganese 50 50 Sulfate 250,000 250,000 Iron 300 300 Alkalinity NE NE Total Dissolved Solids NE 500,000 Specific Conductivity (field) pH (field) Temperature (field) Table 2 (continued) Ground and Surface Water Analysis Methodology Organic Required Solid Waste North Carolina Constituent Section Limit (ug/l)* Ground Water Standard 1,1,1,2-Tetrachloroethane 5 1.3 *** 1,1,1-Trichloroethane 1 200 1,1,2,2-Tetrachloroethane 3 0.18 *** 1,1,2-Trichloroethane 1 0.6 *** 1,1-Dichloroethane 5 70 1,1-Dichloroethylene 5 7 1,2,3-Trichloropropane 1 0.005 1,2-Dibromo-3-chloropropane 13 0.025 1,2-Dibromoethane 1 0.0004 1,2-Dichlorobenzene 5 24 1,2-Dichloroethane 1 0.38 1,2-Dichloropropane 1 0.51 1,4-Dichlorobenzene 1 1.4 2-Butanone 100 4200 2-Hexanone 50 280 4-Methyl-2-pentanone 100 560 *** Acetone 100 700 Acrylonitrile 200 NE Benzene 1 1 Bromochloromethane 3 0.6 *** Bromodichloromethane 1 0.56 Bromoform 4 4.43 Bromomethane 10 NE Carbon Disulfide 100 700 Carbon Tetrachloride 1 0.269 Chlorobenzene 3 50 Chloroethane 10 2800 Chloroform 5 70 Chloromethane 1 2.6 Cis-1,2-dichloroethylene 5 70 Cis-1,3-dichloropropene 1 0.19 Dibromochloromethane 3 0.41 Dibromomethane 10 NE Ethylbenzene 1 550 Iodomethane 10 NE Methylene chloride 1 4.6 Styrene 1 100 Tetrachloroethylene 1 0.7 Toluene 1 1000 Trans-1,2-dichloroethylene 5 100 Table 2 (continued) Ground and Surface Water Analysis Methodology Organic Required Solid Waste North Carolina Constituent Section Limit (ug/l)* Ground Water Standard Trans-1,3-dichloropropene 1 0.19 Trans-1,4-dichloro-2-butene 100 NE Trichloroethylene 1 2.8 Trichloroflouromethane 1 2100 Vinyl acetate 50 7000 *** Vinyl chloride 1 0.015 Xylene (total) 5 530 Tetrahydrofuran 1 NE Notes: All samples shall be unfiltered. NE = not established * Per North Carolina DENR Division of Waste Management guidelines, eff. 2006, equivalent to the PQL. Only SW-846 methodologies that are approved by the NC DENR Solid Waste Section shall be used for laboratory analyses. The laboratory must be certified by NC DENR for the specific lab methods per SW- 846. ** 15A NCAC 2L Standard for Class GA Ground Water – this applies unless otherwise noted (see below) ***North Carolina DWM Ground Water Protection Standard (quoted from website) Groundwater standards and Solid Waste Section Limits are subject to change; the most current standards and limits will be used. Figures Figure 1 – Type 3 Monitoring Well Construction Schematic (Lower Aquifer) Figure 2 – Type 2 Monitoring Well Construction Schematic (Upper Aquifer) Attachment 1 Monitoring Locations SCS ENGINEERS, PC 2520 WHITEHALL PARK DRIVE, SUITE 450 CHARLOTTE, NORTH CAROLINA 28273 PHONE: (704) 504-3107 FAX: (704) 504-3174 CLIENT DATEREVISIONN0. PROJECT TITLE SHEET TITLE APP. BY: Q/A RVW BY: CHK. BY: DWN. BY: DSN. BY: PROJ. NO. D A T E : S C A L E : D R A W I N G N O . 1 1 A S S H O W N F E B R U A R Y 2 0 1 6 02214705.00 GDG KEM GDG GDG GDG MORTON AND SEWELL LAND COMPANY 385 GOLD HILL ROAD ASHEBORO, NC 27203 (336) 629-7175 GROUNDWATER AND LANDFILL MONITORING PLAN GOLD HILL ROAD CDLF 2015 PERMIT #70-06 MODIFICATION M 1 Attachment 2 Solid Waste Section Guidelines for Groundwater, Soil and Surface Water Sampling North Carolina Department of Environment and Natural Resources Division of Waste Management Solid Waste Section Solid Waste Section Guidelines for Groundwater, Soil, and Surface Water Sampling STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT SOLID WASTE SECTION General Sampling Procedures The following guidance is provided to insure a consistent sampling approach so that sample collection activities at solid waste management facilities provide reliable data. Sampling must begin with an evaluation of facility information, historical environmental data and site geologic and hydrogeologic conditions. General sampling procedures are described in this document. Planning Begin sampling activities with planning and coordination. The party contracting with the laboratory is responsible for effectively communicating reporting requirements and evaluating data reliability as it relates to specific monitoring activities. Sample Collection Contamination Prevention a.) Take special effort to prevent cross contamination or environmental contamination when collecting samples. 1. If possible, collect samples from the least contaminated sampling location (or background sampling location, if applicable) to the most contaminated sampling location. 2. Collect the ambient or background samples first, and store them in separate ice chests or separate shipping containers within the same ice chest (e.g. untreated plastic bags). 3. Collect samples in flowing water at designated locations from upstream to downstream. b.) Do not store or ship highly contaminated samples (concentrated wastes, free product, etc.) or samples suspect of containing high concentrations of contaminants in the same ice chest or shipping containers with other environmental samples. 1. Isolate these sample containers by sealing them in separate, untreated plastic bags immediately after collecting, preserving, labeling, etc. 2. Use a clean, untreated plastic bag to line the ice chest or shipping container. c.) All sampling equipment should be thoroughly decontaminated and transported in a manner that does not allow it to become contaminated. Arrangements should be made ahead of time to decontaminate any sampling or measuring equipment that will be reused when taking samples from more than one well. Field decontamination of Rev 4-08 1 sampling equipment will be necessary before sampling each well to minimize the risk of cross contamination. Decontamination procedures should be included in reports as necessary. Certified pre-cleaned sampling equipment and containers may be used. When collecting aqueous samples, rinse the sample collection equipment with a portion of the sample water before taking the actual sample. Sample containers do not need to be rinsed. In the case of petroleum hydrocarbons, oil and grease, or containers with pre-measured preservatives, the sample containers cannot be rinsed. d.) Place all fuel-powered equipment away from, and downwind of, any site activities (e.g., purging, sampling, decontamination). 1. If field conditions preclude such placement (i.e., the wind is from the upstream direction in a boat), place the fuel source(s) as far away as possible from the sampling activities and describe the conditions in the field notes. 2. Handle fuel (i.e., filling vehicles and equipment) prior to the sampling day. If such activities must be performed during sampling, the personnel must wear disposable gloves. 3. Dispense all fuels downwind. Dispose of gloves well away from the sampling activities. Filling Out Sample Labels Fill out label, adhere to vial and collect sample. Print legibly with indelible ink. At a minimum, the label or tag should identify the sample with the following information: 1. Sample location and/or well number 2. Sample identification number 3. Date and time of collection 4. Analysis required/requested 5. Sampler’s initials 6. Preservative(s) used, if any [i.e., HCl, Na2S2O3, NO3, ice, etc.] 7. Any other pertinent information for sample identification Sample Collection Order Unless field conditions justify other sampling regimens, collect samples in the following order: 1. Volatile Organics and Volatile Inorganics 2. Extractable Organics, Petroleum Hydrocarbons, Aggregate Organics and Oil and Grease 3. Total Metals 4. Inorganic Nonmetallics, Physical and Aggregate Properties, and Biologicals 5. Microbiological NOTE: If the pump used to collect groundwater samples cannot be used to collect volatile or extractable organics then collect all other parameters and withdraw the pump and tubing. Then collect the volatile and extractable organics. Rev 4-08 2 Health and Safety Implement all local, state, and federal requirements relating to health and safety. Follow all local, state and federal requirements pertaining to the storage and disposal of any hazardous or investigation derived wastes. a.) The Solid Waste Section recommends wearing protective gloves when conducting all sampling activities. 1. Gloves serve to protect the sample collector from potential exposure to sample constituents, minimize accidental contamination of samples by the collector, and preserve accurate tare weights on preweighed sample containers. 2. Do not let gloves come into contact with the sample or with the interior or lip of the sample container. Use clean, new, unpowdered and disposable gloves. Various types of gloves may be used as long as the construction materials do not contaminate the sample or if internal safety protocols require greater protection. 3. Note that certain materials that may potentially be present in concentrated effluent can pass through certain glove types and be absorbed in the skin. Many vendor catalogs provide information about the permeability of different gloves and the circumstances under which the glove material might be applicable. The powder in powdered gloves can contribute significant contamination. Powdered gloves are not recommended unless it can be demonstrated that the powder does not interfere with the sample analysis. 4. Change gloves after preliminary activities, after collecting all the samples at a single sampling point, if torn or used to handle extremely dirty or highly contaminated surfaces. Properly dispose of all used gloves as investigation derived wastes. b.) Properly manage all investigation derived waste (IDW). 5. To prevent contamination into previously uncontaminated areas, properly manage all IDW. This includes all water, soil, drilling mud, decontamination wastes, discarded personal protective equipment (PPE), etc. from site investigations, exploratory borings, piezometer and monitoring well installation, refurbishment, abandonment, and other investigative activities. Manage all IDW that is determined to be RCRA-regulated hazardous waste according to the local, state and federal requirements. 6. Properly dispose of IDW that is not a RCRA-regulated hazardous waste but is contaminated above the Department’s Soil Cleanup Target Levels or the state standards and/or minimum criteria for ground water quality. If the drill cuttings/mud orpurged well water is contaminated with hazardous waste, contact the DWM Hazardous Waste Section (919-508-8400) for disposal options. Maintain all containers holding IDW in good condition. Periodically inspect the containers for damage and ensure that all required labeling (DOT, RCRA, etc.) are clearly visible. Rev 4-08 3 Sample Storage and Transport Store samples for transport carefully. Pack samples to prevent from breaking and to maintain a temperature of approximately 4 degrees Celsius (°C), adding ice if necessary. Transport samples to a North Carolina-certified laboratory as soon as possible. Avoid unnecessary handling of sample containers. Avoid heating (room temperature or above, including exposure to sunlight) or freezing of the sample containers. Reduce the time between sample collection and delivery to a laboratory whenever possible and be sure that the analytical holding times of your samples can be met by the laboratory. a.) A complete chain-of-custody (COC) form must be maintained to document all transfers and receipts of the samples. Be sure that the sample containers are labeled with the sample location and/or well number, sample identification, the date and time of collection, the analysis to be performed, the preservative added (if any), the sampler’s initials, and any other pertinent information for sample identification. The labels should contain a unique identifier (i.e., unique well numbers) that can be traced to the COC form. The details of sample collection must be documented on the COC. The COC must include the following: 1. Description of each sample (including QA/QC samples) and the number of containers (sample location and identification) 2. Signature of the sampler 3. Date and time of sample collection 4. Analytical method to be performed 5. Sample type (i.e., water or soil) 6. Regulatory agency (i.e., NCDENR/DWM – SW Section) 7. Signatures of all persons relinquishing and receiving custody of the samples 8. Dates and times of custody transfers b.) Pack samples so that they are segregated by site, sampling location or by sample analysis type. When COC samples are involved, segregate samples in coolers by site. If samples from multiple sites will fit in one cooler, they may be packed in the same cooler with the associated field sheets and a single COC form for all. Coolers should not exceed a maximum weight of 50 lbs. Use additional coolers as necessary. All sample containers should be placed in plastic bags (segregated by analysis and location) and completely surrounded by ice. 1. Prepare and place trip blanks in an ice filled cooler before leaving for the field. 2. Segregate samples by analysis and place in sealable plastic bags. 3. Pack samples carefully in the cooler placing ice around the samples. 4. Review the COC. The COC form must accompany the samples to the laboratory. The trip blank(s) must also be recorded on the COC form. 5. Place completed COC form in a waterproof bag, sealed and taped under the lid of the cooler. 6. Secure shipping containers with strapping tape to avoid accidental opening. 7. For COC samples, a tamper-proof seal may also be placed over the cooler lid or over a bag or container containing the samples inside the shipping cooler. Rev 4-08 4 8. "COC" or "EMERG" should be written in indelible ink on the cooler seal to alert sample receipt technicians to priority or special handling samples. 9. The date and sample handler's signature must also be written on the COC seal. 10. Deliver the samples to the laboratory or ship by commercial courier. NOTE: If transport time to the laboratory is not long enough to allow samples to be cooled to 4° C, a temperature reading of the sample source must be documented as the field temperature on the COC form. A downward trend in temperature will be adequate even if cooling to 4° C is not achieved. The field temperature should always be documented if there is any question as to whether samples will have time to cool to 4° C during shipment. Thermometers must be calibrated annually against an NIST traceable thermometer and documentation must be retained. Rev 4-08 5 Appendix A - Decontamination of Field Equipment Decontamination of personnel, sampling equipment, and containers - before and after sampling - must be used to ensure collection of representative samples and to prevent the potential spread of contamination. Decontamination of personnel prevents ingestion and absorption of contaminants. It must be done with a soap and water wash and deionized or distilled water rinse. Certified pre-cleaned sampling equipment and containers may also be used. All previously used sampling equipment must be properly decontaminated before sampling and between sampling locations. This prevents the introduction of contamination into uncontaminated samples and avoids cross-contamination of samples. Cross-contamination can be a significant problem when attempting to characterize extremely low concentrations of organic compounds or when working with soils that are highly contaminated. Clean, solvent-resistant gloves and appropriate protective equipment must be worn by persons decontaminating tools and equipment. Cleaning Reagents Recommendations for the types and grades of various cleaning supplies are outlined below. The recommended reagent types or grades were selected to ensure that the cleaned equipment is free from any detectable contamination. a.) Detergents: Use Liqui-Nox (or a non-phosphate equivalent) or Alconox (or equivalent). Liqui-Nox (or equivalent) is recommended by EPA, although Alconox (or equivalent) may be substituted if the sampling equipment will not be used to collect phosphorus or phosphorus containing compounds. b.) Solvents: Use pesticide grade isopropanol as the rinse solvent in routine equipment cleaning procedures. This grade of alcohol must be purchased from a laboratory supply vendor. Rubbing alcohol or other commonly available sources of isopropanol are not acceptable. Other solvents, such as acetone or methanol, may be used as the final rinse solvent if they are pesticide grade. However, methanol is more toxic to the environment and acetone may be an analyte of interest for volatile organics. 1. Do not use acetone if volatile organics are of interest 2. Containerize all methanol wastes (including rinses) and dispose as a hazardous waste. Pre-clean equipment that is heavily contaminated with organic analytes. Use reagent grade acetone and hexane or other suitable solvents. Use pesticide grade methylene chloride when cleaning sample containers. Store all solvents away from potential sources of contamination. c.) Analyte-Free Water Sources: Analyte-free water is water in which all analytes of interest and all interferences are below method detection limits. Maintain documentation (such as results from equipment blanks) to demonstrate the reliability and purity of analyte-free water source(s). The source of the water must meet the requirements of the analytical method and must be free from the analytes of interest. In general, the following water types are associated with specific analyte groups: 1. Milli-Q (or equivalent polished water): suitable for all analyses. Rev 4-08 6 2. Organic-free: suitable for volatile and extractable organics. 3. Deionized water: may not be suitable for volatile and extractable organics. 4. Distilled water: not suitable for volatile and extractable organics, metals or ultratrace metals. Use analyte-free water for blank preparation and the final decontamination water rinse. In order to minimize long-term storage and potential leaching problems, obtain or purchase analyte-free water just prior to the sampling event. If obtained from a source (such as a laboratory), fill the transport containers and use the contents for a single sampling event. Empty the transport container(s) at the end of the sampling event. Discard any analyte-free water that is transferred to a dispensing container (such as a wash bottle or pump sprayer) at the end of each sampling day. d.) Acids: 1. Reagent Grade Nitric Acid: 10 - 15% (one volume concentrated nitric acid and five volumes deionized water). Use for the acid rinse unless nitrogen components (e.g., nitrate, nitrite, etc.) are to be sampled. If sampling for ultra-trace levels of metals, use an ultra-pure grade acid. 2. Reagent Grade Hydrochloric Acid: 10% hydrochloric acid (one volume concentrated hydrochloric and three volumes deionized water). Use when nitrogen components are to be sampled. 3. If samples for both metals and the nitrogen-containing components are collected with the equipment, use the hydrochloric acid rinse, or thoroughly rinse with hydrochloric acid after a nitric acid rinse. If sampling for ultra trace levels of metals, use an ultra-pure grade acid. 4. Freshly prepared acid solutions may be recycled during the sampling event or cleaning process. Dispose of any unused acids according to local ordinances. Reagent Storage Containers The contents of all containers must be clearly marked. a.) Detergents: 1. Store in the original container or in a HDPE or PP container. b.) Solvents: 1. Store solvents to be used for cleaning or decontamination in the original container until use in the field. If transferred to another container for field use, use either a glass or Teflon container. 2. Use dispensing containers constructed of glass, Teflon or stainless steel. Note: If stainless steel sprayers are used, any gaskets that contact the solvents must be constructed of inert materials. c.) Analyte-Free Water: 1. Transport in containers appropriate for the type of water stored. If the water is commercially purchased (e.g., grocery store), use the original containers when transporting the water to the field. Containers made of glass, Teflon, polypropylene or HDPE are acceptable. 2. Use glass or Teflon to transport organic-free sources of water on-site. Polypropylene or HDPE may be used, but are not recommended. Rev 4-08 7 3. Dispense water from containers made of glass, Teflon, HDPE or polypropylene. 4. Do not store water in transport containers for more than three days before beginning a sampling event. 5. If working on a project that has oversight from EPA Region 4, use glass containers for the transport and storage of all water. 6. Store and dispense acids using containers made of glass, Teflon or plastic. General Requirements a.) Prior to use, clean/decontaminate all sampling equipment (pumps, tubing, lanyards, split spoons, etc.) that will be exposed to the sample. b.) Before installing, clean (or obtain as certified pre-cleaned) all equipment that is dedicated to a single sampling point and remains in contact with the sample medium (e.g., permanently installed groundwater pump). If you use certified pre-cleaned equipment no cleaning is necessary. 1. Clean this equipment any time it is removed for maintenance or repair. 2. Replace dedicated tubing if discolored or damaged. c.) Clean all equipment in a designated area having a controlled environment (house, laboratory, or base of field operations) and transport it to the field, pre-cleaned and ready to use, unless otherwise justified. d.) Rinse all equipment with water after use, even if it is to be field-cleaned for other sites. Rinse equipment used at contaminated sites or used to collect in-process (e.g., untreated or partially treated wastewater) samples immediately with water. e.) Whenever possible, transport sufficient clean equipment to the field so that an entire sampling event can be conducted without the need for cleaning equipment in the field. f.) Segregate equipment that is only used once (i.e., not cleaned in the field) from clean equipment and return to the in-house cleaning facility to be cleaned in a controlled environment. g.) Protect decontaminated field equipment from environmental contamination by securely wrapping and sealing with one of the following: 1. Aluminum foil (commercial grade is acceptable) 2. Untreated butcher paper 3. Clean, untreated, disposable plastic bags. Plastic bags may be used for all analyte groups except volatile and extractable organics. Plastic bags may be used for volatile and extractable organics, if the equipment is first wrapped in foil or butcher paper, or if the equipment is completely dry. Cleaning Sample Collection Equipment a.) On-Site/In-Field Cleaning – Cleaning equipment on-site is not recommended because environmental conditions cannot be controlled and wastes (solvents and acids) must be containerized for proper disposal. 1. Ambient temperature water may be substituted in the hot, sudsy water bath and hot water rinses. NOTE: Properly dispose of all solvents and acids. Rev 4-08 8 2. Rinse all equipment with water after use, even if it is to be field-cleaned for other sites. 3. Immediately rinse equipment used at contaminated sites or used to collect in-process (e.g., untreated or partially treated wastewater) samples with water. b.) Heavily Contaminated Equipment - In order to avoid contaminating other samples, isolate heavily contaminated equipment from other equipment and thoroughly decontaminate the equipment before further use. Equipment is considered heavily contaminated if it: 1. Has been used to collect samples from a source known to contain significantly higher levels than background. 2. Has been used to collect free product. 3. Has been used to collect industrial products (e.g., pesticides or solvents) or their byproducts. NOTE: Cleaning heavily contaminated equipment in the field is not recommended. c.) On-Site Procedures: 1. Protect all other equipment, personnel and samples from exposure by isolating the equipment immediately after use. 2. At a minimum, place the equipment in a tightly sealed, untreated, plastic bag. 3. Do not store or ship the contaminated equipment next to clean, decontaminated equipment, unused sample containers, or filled sample containers. 4. Transport the equipment back to the base of operations for thorough decontamination. 5. If cleaning must occur in the field, document the effectiveness of the procedure, collect and analyze blanks on the cleaned equipment. d.) Cleaning Procedures: 1. If organic contamination cannot be readily removed with scrubbing and a detergent solution, pre-rinse equipment by thoroughly rinsing or soaking the equipment in acetone. 2. Use hexane only if preceded and followed by acetone. 3. In extreme cases, it may be necessary to steam clean the field equipment before proceeding with routine cleaning procedures. 4. After the solvent rinses (and/or steam cleaning), use the appropriate cleaning procedure. Scrub, rather than soak, all equipment with sudsy water. If high levels of metals are suspected and the equipment cannot be cleaned without acid rinsing, soak the equipment in the appropriate acid. Since stainless steel equipment should not be exposed to acid rinses, do not use stainless steel equipment when heavy metal contamination is suspected or present. 5. If the field equipment cannot be cleaned utilizing these procedures, discard unless further cleaning with stronger solvents and/or oxidizing solutions is effective as evidenced by visual observation and blanks. 6. Clearly mark or disable all discarded equipment to discourage use. Rev 4-08 9 e.) General Cleaning - Follow these procedures when cleaning equipment under controlled conditions. Check manufacturer's instructions for cleaning restrictions and/or recommendations. 1. Procedure for Teflon, stainless steel and glass sampling equipment: This procedure must be used when sampling for ALL analyte groups. (Extractable organics, metals, nutrients, etc. or if a single decontamination protocol is desired to clean all Teflon, stainless steel and glass equipment.) Rinse equipment with hot tap water. Soak equipment in a hot, sudsy water solution (Liqui-Nox or equivalent). If necessary, use a brush to remove particulate matter or surface film. Rinse thoroughly with hot tap water. If samples for trace metals or inorganic analytes will be collected with the equipment that is not stainless steel, thoroughly rinse (wet all surfaces) with the appropriate acid solution. Rinse thoroughly with analyte-free water. Make sure that all equipment surfaces are thoroughly flushed with water. If samples for volatile or extractable organics will be collected, rinse with isopropanol. Wet equipment surfaces thoroughly with free- flowing solvent. Rinse thoroughly with analyte-free water. Allow to air dry. Wrap and seal as soon as the equipment has air-dried. If isopropanol is used, the equipment may be air-dried without the final analyte-free water rinse; however, the equipment must be completely dry before wrapping or use. Wrap clean sampling equipment according to the procedure described above. 2. General Cleaning Procedure for Plastic Sampling Equipment: Rinse equipment with hot tap water. Soak equipment in a hot, sudsy water solution (Liqui-Nox or equivalent). If necessary, use a brush to remove particulate matter or surface film. Rinse thoroughly with hot tap water. Thoroughly rinse (wet all surfaces) with the appropriate acid solution. Check manufacturer's instructions for cleaning restrictions and/or recommendations. Rinse thoroughly with analyte-free water. Be sure that all equipment surfaces are thoroughly flushed. Allow to air dry as long as possible. Wrap clean sampling equipment according to the procedure described above. Rev 4-08 10 Appendix B - Collecting Soil Samples Soil samples are collected for a variety of purposes. A methodical sampling approach must be used to assure that sample collection activities provide reliable data. Sampling must begin with an evaluation of background information, historical data and site conditions. Soil Field Screening Procedures Field screening is the use of portable devices capable of detecting petroleum contaminants on a real-time basis or by a rapid field analytical technique. Field screening should be used to help assess locations where contamination is most likely to be present. When possible, field-screening samples should be collected directly from the excavation or from the excavation equipment's bucket. If field screening is conducted only from the equipment's bucket, then a minimum of one field screening sample should be collected from each 10 cubic yards of excavated soil. If instruments or other observations indicate contamination, soil should be separated into stockpiles based on apparent degrees of contamination. At a minimum, soil suspected of contamination must be segregated from soil observed to be free of contamination. a.) Field screening devices – Many field screen instruments are available for detecting contaminants in the field on a rapid or real-time basis. Acceptable field screening instruments must be suitable for the contaminant being screened. The procdedure for field screening using photoionization detectors (PIDs) and flame ionization detectors (FIDs) is described below. If other instruments are used, a description of the instrument or method and its intended use must be provided to the Solid Waste Section. Whichever field screening method is chosen, its accuracy must be verified throughout the sampling process. Use appropriate standards that match the use intended for the data. Unless the Solid Waste Section indicates otherwise, wherever field screening is recommended in this document, instrumental or analytical methods of detection must be used, not olfactory or visual screening methods. b.) Headspace analytical screening procedure for filed screening (semi-quantitative field screening) - The most commonly used field instruments for Solid Waste Section site assessments are FIDs and PIDs. When using FIDs and PIDs, use the following headspace screening procedure to obtain and analyze field-screening samples: 1. Partially fill (one-third to one-half) a clean jar or clean ziplock bag with the sample to be analyzed. The total capacity of the jar or bag may not be less than eight ounces (app. 250 ml), but the container should not be so large as to allow vapor diffusion and stratification effects to significantly affect the sample. 2. If the sample is collected from a spilt-spoon, it must be transferred to the jar or bag for headspace analysis immediately after opening the split- spoon. If the sample is collected from an excavation or soil pile, it must be collected from freshly uncovered soil. Rev 4-08 11 3. If a jar is used, it must be quickly covered with clean aluminum foil or a jar lid; screw tops or thick rubber bands must be used to tightly seal the jar. If a zip lock bag is used, it must be quickly sealed shut. 4. Headspace vapors must be allowed to develop in the container for at least 10 minutes but no longer than one hour. Containers must be shaken or agitated for 15 seconds at the beginning and the end of the headspace development period to assist volatilization. Temperatures of the headspace must be warmed to at least 5° C (approximately 40° F) with instruments calibrated for the temperature used. 5. After headspace development, the instrument sampling probe must be inserted to a point about one-half the headspace depth. The container opening must be minimized and care must be taken to avoid the uptake of water droplets and soil particulates. 6. After probe insertion, the highest meter reading must be taken and recorded. This will normally occur between two and five seconds after probe insertion. If erratic meter response occurs at high organic vapor concentrations or conditions of elevated headspace moisture, a note to that effect must accompany the headspace data. 7. All field screening results must be documented in the field record or log book. Soil Sample Collection Procedures for Laboratory Samples The number and type of laboratory samples collected depends on the purpose of the sampling activity. Samples analyzed with field screening devices may not be substituted for required laboratory samples. a.) General Sample Collection - When collecting samples from potentially contaminated soil, care should be taken to reduce contact with skin or other parts of the body. Disposable gloves should be worn by the sample collector and should be changed between samples to avoid cross-contamination. Soil samples should be collected in a manner that causes the least disturbance to the internal structure of the sample and reduces its exposure to heat, sunlight and open air. Likewise, care should be taken to keep the samples from being contaminated by other materials or other samples collected at the site. When sampling is to occur over an extended period of time, it is necessary to insure that the samples are collected in a comparable manner. All samples must be collected with disposable or clean tools that have been decontaminated. Disposable gloves must be worn and changed between sample collections. Sample containers must be filled quickly. Soil samples must be placed in containers in the order of volatility, for example, volatile organic aromatic samples must be taken first, organics next, then heavier range organics, and finally soil classification samples. Containers must be quickly and adequately sealed, and rims must be cleaned before tightening lids. Tape may be used only if known not to affect sample analysis. Sample containers must be clearly labeled. Containers must immediately be preserved according to procedures in this Section. Unless specified Rev 4-08 12 otherwise, at a minimum, the samples must be immediately cooled to 4 ± 2°C and this temperature must be maintained throughout delivery to the laboratory. b.) Surface Soil Sampling - Surface soil is generally classified as soil between the ground surface and 6-12 inches below ground surface. Remove leaves, grass and surface debris from the area to be sampled. Select an appropriate, pre-cleaned sampling device and collect the sample. Transfer the sample to the appropriate sample container. Clean the outside of the sample container to remove excess soil. Label the sample container, place on wet ice to preserve at 4°C, and complete the field notes. c.) Subsurface Soil Sampling – The interval begins at approximately 12 inches below ground surface. Collect samples for volatile organic analyses. For other analyses, select an appropriate, pre-cleaned sampling device and collect the sample. Transfer the sample to the appropriate sample container. Clean the outside of the sample container to remove excess soil. Label the sample container, place on wet ice to preserve at 4°C, and complete field notes. d.) Equipment for Reaching the Appropriate Soil Sampling Depth - Samples may be collected using a hollow stem soil auger, direct push, Shelby tube, split-spoon sampler, or core barrel. These sampling devices may be used as long as an effort is made to reduce the loss of contaminants through volatilization. In these situations, obtain a sufficient volume of so the samples can be collected without volatilization and disturbance to the internal structure of the samples. Samples should be collected from cores of the soil. Non-disposable sampling equipment must be decontaminated between each sample location. NOTE: If a confining layer has been breached during sampling, grout the hole to land. e.) Equipment to Collect Soil Samples - Equipment and materials that may be used to collect soil samples include disposable plastic syringes and other “industry-standard” equipment and materials that are contaminant-free. Non-disposable sampling equipment must be decontaminated between each sample location. Rev 4-08 13 Appendix C - Collecting Groundwater Samples Groundwater samples are collected to identify, investigate, assess and monitor the concentration of dissolved contaminant constituents. To properly assess groundwater contamination, first install sampling points (monitoring wells, etc.) to collect groundwater samples and then perform specific laboratory analyses. All monitoring wells should be constructed in accordance with 15A NCAC 2C .0100 and sampled as outlined in this section. Groundwater monitoring is conducted using one of two methods: 1. Portable Monitoring: Monitoring that is conducted using sampling equipment that is discarded between sampling locations. Equipment used to collect a groundwater sample from a well such as bailers, tubing, gloves, and etc. are disposed of after sample collection. A new set of sampling equipment is used to collect a groundwater sample at the next monitor well. 2. Dedicated Monitoring: Monitoring that utilizes permanently affixed down-well and well head components that are capped after initial set-up. Most dedicated monitoring systems are comprised of an in-well submersible bladder pump, with air supply and sample discharge tubing, and an above-ground driver/controller for regulation of flow rates and volumes. The pump and all tubing housed within the well should be composed of Teflon or stainless steel components. This includes seals inside the pump, the pump body, and fittings used to connect tubing to the pump. Because ground water will not be in contact with incompatible constituents and because the well is sealed from the surface, virtually no contamination is possible from intrinsic sources during sampling and between sampling intervals. All dedicated monitoring systems must be approved by the Solid Waste Section before installation. Groundwater samples may be collected from a number of different configurations. Each configuration is associated with a unique set of sampling equipment requirements and techniques: 1. Wells without Plumbing: These wells require equipment to be brought to the well to purge and sample unless dedicated equipment is placed in the well. 2. Wells with In-Place Plumbing: Wells with in-place plumbing do not require equipment to be brought to the well to purge and sample. In-place plumbing is generally considered permanent equipment routinely used for purposes other than purging and sampling, such as for water supply. 3. Air Strippers or Remedial Systems: These types of systems are installed as remediation devices. Rev 4-08 14 Groundwater Sample Preparation The type of sample containers used depends on the type of analysis performed. First, determine the type(s) of contaminants expected and the proper analytical method(s). Be sure to consult your selected laboratory for its specific needs and requirements prior to sampling. Next, prepare the storage and transport containers (ice chest, etc.) before taking any samples so that each sample can be placed in a chilled environment immediately after collection. Use groundwater purging and sampling equipment constructed of only non-reactive, non- leachable materials that are compatible with the environment and the selected analytes. In selecting groundwater purging and sampling equipment, give consideration to the depth of the well, the depth to groundwater, the volume of water to be evacuated, the sampling and purging technique, and the analytes of interest. Additional supplies, such as reagents and preservatives, may be necessary. All sampling equipment (bailers, tubing, containers, etc.) must be selected based on its chemical compatibility with the source being sampled (e.g., water supply well, monitoring well) and the contaminants potentially present. a.) Pumps - All pumps or pump tubing must be lowered and retrieved from the well slowly and carefully to minimize disturbance to the formation water. This is especially critical at the air/water interface. 1. Above-Ground Pumps • Variable Speed Peristaltic Pump: Use a variable speed peristaltic pump to purge groundwater from wells when the static water level in the well is no greater than 20- 25 feet below land surface (BLS). If the water levels are deeper than 18-20 feet BLS, the pumping velocity will decrease. A variable speed peristaltic pump can be used for normal purging and sampling, and sampling low permeability aquifers or formations. Most analyte groups can be sampled with a peristaltic pump if the tubing and pump configurations are appropriate. • Variable Speed Centrifugal Pump: A variable speed centrifugal pump can be used to purge groundwater from 2-inch and larger internal diameter wells. Do not use this type of pump to collect groundwater samples. When purging is complete, do not allow the water that remains in the tubing to fall back into the well. Install a check valve at the end of the purge tubing. 2. Submersible Pumps • Variable Speed Electric Submersible Pump: A variable speed submersible pump can be used to purge and sample groundwater from 2-inch and larger internal diameter wells. A variable speed submersible pump can be used for normal purging and sampling, and sampling low permeability aquifers or formations. The pump housing, fittings, check valves and associated hardware must be constructed of stainless steel. All other materials must be Rev 4-08 15 compatible with the analytes of interest. Install a check valve at the output side of the pump to prevent backflow. If purging and sampling for organics, the entire length of the delivery tube must be Teflon, polyethylene or polypropylene (PP) tubing; the electrical cord must be sealed in Teflon, polyethylene or PP and any cabling must be sealed in Teflon, polyethylene or PP, or be constructed of stainless steel; and all interior components that contact the sample water (impeller, seals, gaskets, etc.) must be constructed of stainless steel or Teflon. 3. Variable Speed Bladder Pump: A variable speed, positive displacement, bladder pump can be used to purge and sample groundwater from 3/4-inch and larger internal diameter wells. • A variable speed bladder pump can be used for normal purging and sampling, and sampling low permeability aquifers or formations. • The bladder pump system is composed of the pump, the compressed air tubing, the water discharge tubing, the controller and a compressor, or a compressed gas supply. • The pump consists of a bladder and an exterior casing or pump body that surrounds the bladder and two (2) check valves. These parts can be composed of various materials, usually combinations of polyvinyl chloride (PVC), Teflon, polyethylene, PP and stainless steel. Other materials must be compatible with the analytes of interest. • If purging and sampling for organics, the pump body must be constructed of stainless steel. The valves and bladder must be Teflon, polyethylene or PP; the entire length of the delivery tube must be Teflon, polyethylene or PP; and any cabling must be sealed in Teflon, polyethylene or PP, or be constructed of stainless steel. • Permanently installed pumps may have a PVC pump body as long as the pump remains in contact with the water in the well. b.) Bailers 1. Purging: Bailers must be used with caution because improper bailing can cause changes in the chemistry of the water due to aeration and loosening particulate matter in the space around the well screen. Use a bailer if there is non-aqueous phase liquid (free product) in the well or if non-aqueous phase liquid is suspected to be in the well. 2. Sampling: Bailers must be used with caution. 3. Construction and Type: Bailers must be constructed of materials compatible with the analytes of interest. Stainless steel, Teflon, rigid medical grade PVC, polyethylene and PP bailers may be used to sample all analytes. Use disposable bailers when sampling grossly contaminated sample sources. NCDENR recommends using dual check valve bailers when collecting samples. Use bailers with a controlled flow bottom to collect volatile organic samples. Rev 4-08 16 4. Contamination Prevention: Keep the bailer wrapped (foil, butcher paper, etc.) until just before use. Use protective gloves to handle the bailer once it is removed from its wrapping. Handle the bailer by the lanyard to minimize contact with the bailer surface. c.) Lanyards 1. Lanyards must be made of non-reactive, non-leachable material. They may be cotton twine, nylon, stainless steel, or may be coated with Teflon, polyethylene or PP. 2. Discard cotton twine, nylon, and non-stainless steel braided lanyards after sampling each monitoring well. 3. Decontaminate stainless steel, coated Teflon, polyethylene and PP lanyards between monitoring wells. They do not need to be decontaminated between purging and sampling operations. Water Level and Purge Volume Determination The amount of water that must be purged from a well is determined by the volume of water and/or field parameter stabilization. a.) General Equipment Considerations - Selection of appropriate purging equipment depends on the analytes of interest, the well diameter, transmissivity of the aquifer, the depth to groundwater, and other site conditions. 1. Use of a pump to purge the well is recommended unless no other equipment can be used or there is non-aqueous phase liquid in the well, or non-aqueous phase liquid is suspected to be in the well. 2. Bailers must be used with caution because improper bailing: • Introduces atmospheric oxygen, which may precipitate metals (i.e., iron) or cause other changes in the chemistry of the water in the sample (i.e., pH). • Agitates groundwater, which may bias volatile and semi- volatile organic analyses due to volatilization. • Agitates the water in the aquifer and resuspends fine particulate matter. • Surges the well, loosening particulate matter in the annular space around the well screen. • May introduce dirt into the water column if the sides of the casing wall are scraped. NOTE: It is critical for bailers to be slowly and gently immersed into the top of the water column, particularly during the final stages of purging. This minimizes turbidity and disturbance of volatile organic constituents. b.) Initial Inspection 1. Remove the well cover and remove all standing water around the top of the well casing (manhole) before opening the well. 2. Inspect the exterior protective casing of the monitoring well for damage. Document the results of the inspection if there is a problem. 3. It is recommended that you place a protective covering around the well head. Replace the covering if it becomes soiled or ripped. Rev 4-08 17 4. Inspect the well lock and determine whether the cap fits tightly. Replace the cap if necessary. c.) Water Level Measurements - Use an electronic probe or chalked tape to determine the water level. Decontaminate all equipment before use. Measure the depth to groundwater from the top of the well casing to the nearest 0.01 foot. Always measure from the same reference point or survey mark on the well casing. Record the measurement. 1. Electronic Probe: Decontaminate all equipment before use. Follow the manufacturer’s instructions for use. Record the measurement. 2. Chalked Line Method: Decontaminate all equipment before use. Lower chalked tape into the well until the lower end is in the water. This is usually determined by the sound of the weight hitting the water. Record the length of the tape relative to the reference point. Remove the tape and note the length of the wetted portion. Record the length. Determine the depth to water by subtracting the length of the wetted portion from the total length. Record the result. d.) Water Column Determination - To determine the length of the water column, subtract the depth to the top of the water column from the total well depth (or gauged well depth if silting has occurred). The total well depth depends on the well construction. If gauged well depth is used due to silting, report total well depth also. Some wells may be drilled in areas of sinkhole, karst formations or rock leaving an open borehole. Attempt to find the total borehole depth in cases where there is an open borehole below the cased portion. e.) Well Water Volume - Calculate the total volume of water, in gallons, in the well using the following equation: V = (0.041)d x d x h Where: V = volume in gallons d = well diameter in inches h = height of the water column in feet The total volume of water in the well may also be determined with the following equation by using a casing volume per foot factor (Gallons per Foot of Water) for the appropriate diameter well: V = [Gallons per Foot of Water] x h Where: V = volume in gallons h = height of the water column in feet Record all measurements and calculations in the field records. f.) Purging Equipment Volume - Calculate the total volume of the pump, associated tubing and flow cell (if used), using the following equation: V = p + ((0.041)d x d x l) + fc Where: V = volume in gallons p = volume of pump in gallons d = tubing diameter in inches l = length of tubing in feet Rev 4-08 18 fc = volume of flow cell in gallons g.) If the groundwater elevation data are to be used to construct groundwater elevation contour maps, all water level measurements must be taken within the same 24 hour time interval when collecting samples from multiple wells on a site, unless a shorter time period is required. If the site is tidally influenced, complete the water level measurements within the time frame of an incoming or outgoing tide. Well Purging Techniques The selection of the purging technique and equipment is dependent on the hydrogeologic properties of the aquifer, especially depth to groundwater and hydraulic conductivity. a.) Measuring the Purge Volume - The volume of water that is removed during purging must be recorded. Therefore, you must measure the volume during the purging operation. 1. Collect the water in a graduated container and multiply the number of times the container was emptied by the volume of the container, OR 2. Estimate the volume based on pumping rate. This technique may be used only if the pumping rate is constant. Determine the pumping rate by measuring the amount of water that is pumped for a fixed period of time, or use a flow meter. • Calculate the amount of water that is discharged per minute: D = Measured Amount/Total Time In Minutes • Calculate the time needed to purge one (1) well volume or one (1) purging equipment volume: Time = V/D Where: V = well volume or purging equipment volume D = discharge rate • Make new measurements each time the pumping rate is changed. 3. Use a totalizing flow meter. • Record the reading on the totalizer prior to purging. • Record the reading on the totalizer at the end of purging. • To obtain the volume purged, subtract the reading on the totalizer prior to purging from the reading on the totalizer at the end of purging. • Record the times that purging begins and ends in the field records. b.) Purging Measurement Frequency - When purging a well that has the well screen fully submerged and the pump or intake tubing is placed within the well casing above the well screen or open hole, purge a minimum of one (1) well volume prior to collecting measurements of the field parameters. Allow at least one quarter (1/4) well volume to purge between subsequent measurements. When purging a well that has the pump or intake tubing placed within a fully submerged well screen or open hole, purge until the water level has stabilized (well recovery rate equals the purge rate), then purge a minimum of one (1) volume of the pump, associated tubing and flow cell (if used) prior to collecting measurements of the field parameters. Take measurements of the field parameters no sooner than two (2) to three (3) minutes apart. Purge at least Rev 4-08 19 three (3) volumes of the pump, associated tubing and flow cell, if used, prior to collecting a sample. When purging a well that has a partially submerged well screen, purge a minimum of one (1) well volume prior to collecting measurements of the field parameters. Take measurements of the field parameters no sooner than two (2) to three (3) minutes apart. c.) Purging Completion - Wells must be adequately purged prior to sample collection to ensure representation of the aquifer formation water, rather than stagnant well water. This may be achieved by purging three volumes from the well or by satisfying any one of the following three purge completion criteria: 1.) Three (3) consecutive measurements in which the three (3) parameters listed below are within the stated limits, dissolved oxygen is no greater than 20 percent of saturation at the field measured temperature, and turbidity is no greater than 20 Nephelometric Turbidity Units (NTUs). • Temperature: + 0.2° C • pH: + 0.2 Standard Units • Specific Conductance: + 5.0% of reading Document and report the following, as applicable. The last four items only need to be submitted once: • Purging rate. • Drawdown in the well, if any. • A description of the process and the data used to design the well. • The equipment and procedure used to install the well. • The well development procedure. • Pertinent lithologic or hydrogeologic information. 2.) If it is impossible to get dissolved oxygen at or below 20 percent of saturation at the field measured temperature or turbidity at or below 20 NTUs, then three (3) consecutive measurements of temperature, pH, specific conductance and the parameter(s) dissolved oxygen and/or turbidity that do not meet the requirements above must be within the limits below. The measurements are: • Temperature: + 0.2° C • pH: + 0.2 Standard Units • Specific Conductance: + 5.0% of reading • Dissolved Oxygen: + 0.2 mg/L or 10%, whichever is greater • Turbidity: + 5 NTUs or 10%, whichever is greater Additionally, document and report the following, as applicable, except that the last four(4) items only need to be submitted once: • Purging rate. • Drawdown in the well, if any. • A description of conditions at the site that may cause the dissolved oxygen to be high and/or dissolved oxygen measurements made within the screened or open hole portion of the well with a downhole dissolved oxygen probe. Rev 4-08 20 • A description of conditions at the site that may cause the turbidity to be high and any procedures that will be used to minimize turbidity in the future. • A description of the process and the data used to design the well. • The equipment and procedure used to install the well. • The well development procedure. • Pertinent lithologic or hydrogeologic information. 3.) If after five (5) well volumes, three (3) consecutive measurements of the field parameters temperature, pH, specific conductance, dissolved oxygen, and turbidity are not within the limits stated above, check the instrument condition and calibration, purging flow rate and all tubing connections to determine if they might be affecting the ability to achieve stable measurements. It is at the discretion of the consultant/contractor whether or not to collect a sample or to continue purging. Further, the report in which the data are submitted must include the following, as applicable. The last four (4) items only need to be submitted once. • Purging rate. • Drawdown in the well, if any. • A description of conditions at the site that may cause the Dissolved Oxygen to be high and/or Dissolved Oxygen measurements made within the screened or open hole portion of the well with a downhole dissolved oxygen probe. • A description of conditions at the site that may cause the turbidity to be high and any procedures that will be used to minimize turbidity in the future. • A description of the process and the data used to design the well. • The equipment and procedure used to install the well. • The well development procedure. • Pertinent lithologic or hydrogeologic information. If wells have previously and consistently purged dry, and the current depth to groundwater indicates that the well will purge dry during the current sampling event, minimize the amount of water removed from the well by using the same pump to purge and collect the sample: • Place the pump or tubing intake within the well screened interval. • Use very small diameter Teflon, polyethylene or PP tubing and the smallest possible pump chamber volume. This will minimize the total volume of water pumped from the well and reduce drawdown. • Select tubing that is thick enough to minimize oxygen transfer through the tubing walls while pumping. Rev 4-08 21 • Pump at the lowest possible rate (100 mL/minute or less) to reduce drawdown to a minimum. • Purge at least two (2) volumes of the pumping system (pump, tubing and flow cell, if used). • Measure pH, specific conductance, temperature, dissolved oxygen and turbidity, then begin to collect the samples. Collect samples immediately after purging is complete. The time period between completing the purge and sampling cannot exceed six hours. If sample collection does not occur within one hour of purging completion, re-measure the five field parameters: temperature, pH, specific conductance, dissolved oxygen and turbidity, just prior to collecting the sample. If the measured values are not within 10 percent of the previous measurements, re-purge the well. The exception is “dry” wells. d.) Lanyards 1. Securely fasten lanyards, if used, to any downhole equipment (bailers, pumps, etc.). 2. Use bailer lanyards in such a way that they do not touch the ground surface. Wells Without Plumbing a.) Tubing/Pump Placement 1. If attempting to minimize the volume of purge water, position the intake hose or pump at the midpoint of the screened or open hole interval. 2. If monitoring well conditions do not allow minimizing of the purge water volume, position the pump or intake hose near the top of the water column. This will ensure that all stagnant water in the casing is removed. 3. If the well screen or borehole is partially submerged, and the pump will be used for both purging and sampling, position the pump midway between the measured water level and the bottom of the screen. Otherwise, position the pump or intake hose near the top of the water column. b.) Non-dedicated (portable) pumps 1. Variable Speed Peristaltic Pump • Wear sampling gloves to position the decontaminated pump and tubing. • Attach a short section of tubing to the discharge side of the pump and into a graduated container. • Attach one end of a length of new or precleaned tubing to the pump head flexible hose. • Place the tubing as described in one of the options listed above. • Change gloves before beginning to purge. • Measure the depth to groundwater at frequent intervals. • Record these measurements. • Adjust the purging rate so that it is equivalent to the well recovery rate to minimize drawdown. Rev 4-08 22 • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdrawal rate with the recharge rate. • If the water table continues to drop during pumping, lower the tubing at the approximate rate of drawdown so that water is removed from the top of the water column. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. • Decontaminate the pump and tubing between wells (see Appendix C) or if precleaned tubing is used for each well, only the pump. 2. Variable Speed Centrifugal Pump • Position fuel powered equipment downwind and at least 10 feet from the well head. Make sure that the exhaust faces downwind. • Wear sampling gloves to position the decontaminated pump and tubing. • Place the decontaminated suction hose so that water is always pumped from the top of the water column. • Change gloves before beginning to purge. • Equip the suction hose with a foot valve to prevent purge water from re-entering the well. • Measure the depth to groundwater at frequent intervals. • Record these measurements. • To minimize drawdown, adjust the purging rate so that it is equivalent to the well recovery rate. • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdrawal rate with the recharge rate. • If the water table continues to drop during pumping, lower the tubing at the approximate rate of drawdown so that the water is removed from the top of the water column. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. • Decontaminate the pump and tubing between wells or if precleaned tubing is used for each well, only the pump. 3. Variable Speed Electric Submersible Pump • Position fuel powered equipment downwind and at least 10 feet from the well head. Make sure that the exhaust faces downwind. • Wear sampling gloves to position the decontaminated pump and tubing. • Carefully position the decontaminated pump. Rev 4-08 23 • Change gloves before beginning to purge. • Measure the depth to groundwater at frequent intervals. • Record these measurements. • To minimize drawdown, adjust the purging rate so that it is equivalent to the well recovery rate. • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdrawal rate with the recharge rate. • If the water table continues to drop during pumping, lower the tubing or pump at the approximate rate of drawdown so that water is removed from the top of the water column. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. • Decontaminate the pump and tubing between wells or only the pump if precleaned tubing is used for each well. 4. Variable Speed Bladder Pump • Position fuel powered equipment downwind and at least 10 feet from the well head. Make sure that the exhaust faces downwind. • Wear sampling gloves to position the decontaminated pump and tubing. • Attach the tubing and carefully position the pump. • Change gloves before beginning purging. • Measure the depth to groundwater at frequent intervals. • Record these measurements. • To minimize drawdown, adjust the purging rate so that it is equivalent to the well recovery rate. • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdrawal rate with the recharge rate. • If the water table continues to drop during pumping, lower the tubing or pump at the approximate rate of drawdown so that water is removed from the top of the water column. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. • Decontaminate the pump and tubing between wells or if precleaned tubing is used for each well, only the pump. c.) Dedicated Portable Pumps 1. Variable Speed Electric Submersible Pump • Position fuel powered equipment downwind and at least 10 feet from the well head. Make sure that the exhaust faces downwind. • Wear sampling gloves. Rev 4-08 24 • Measure the depth to groundwater at frequent intervals. • Record these measurements. • Adjust the purging rate so that it is equivalent to the well recovery rate to minimize drawdown. • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdraw with the recharge rate. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. 2. Variable Speed Bladder Pump • Position fuel powered equipment downwind and at least 10 feet from the well head. Make sure that the exhaust faces downwind. • Wear sampling gloves. • Measure the depth to groundwater at frequent intervals. • Record these measurements. • Adjust the purging rate so that it is equivalent to the well recovery rate to minimize drawdown. • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdraw with the recharge rate. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. 3. Bailers - Using bailers for purging is not recommended unless care is taken to use proper bailing technique, or if free product is present in the well or suspected to be in the well. • Minimize handling the bailer as much as possible. • Wear sampling gloves. • Remove the bailer from its protective wrapping just before use. • Attach a lanyard of appropriate material. • Use the lanyard to move and position the bailer. • Lower and retrieve the bailer slowly and smoothly. • Lower the bailer carefully into the well to a depth approximately a foot above the water column. • When the bailer is in position, lower the bailer into the water column at a rate of 2 cm/sec until the desired depth is reached. • Do not lower the top of the bailer more than one (1) foot below the top of the water table so that water is removed from the top of the water column. • Allow time for the bailer to fill with aquifer water as it descends into the water column. Rev 4-08 25 • Carefully raise the bailer. Retrieve the bailer at the same rate of 2 cm/sec until the bottom of the bailer has cleared to top of the water column. • Measure the purge volume. • Record the volume of the bailer. • Continue to carefully lower and retrieve the bailer as described above until the purging is considered complete, based on either the removal of 3 well volumes. • Remove at least one (1) well volume before collecting measurements of the field parameters. Take each subsequent set of measurements after removing at least one quarter (1/4) well volume between measurements. Groundwater Sampling Techniques a.) Purge wells. b.) Replace protective covering around the well if it is soiled or torn after completing purging operations. c.) Equipment Considerations 1. The following pumps are approved to collect volatile organic samples: • Stainless steel and Teflon variable speed submersible pumps • Stainless steel and Teflon or polyethylene variable speed bladder pumps • Permanently installed PVC bodied pumps (As long as the pump remains in contact with the water in the well at all times) 2. Collect sample from the sampling device and store in sample container. Do not use intermediate containers. 3. To avoid contamination or loss of analytes from the sample, handle sampling equipment as little as possible and minimize equipment exposure to the sample. 4. To reduce chances of cross-contamination, use dedicated equipment whenever possible. “Dedicated” is defined as equipment that is to be used solely for one location for the life of that equipment (e.g., permanently mounted pump). Purchase dedicated equipment with the most sensitive analyte of interest in mind. • Clean or make sure dedicated pumps are clean before installation. They do not need to be cleaned prior to each use, but must be cleaned if they are withdrawn for repair or servicing. • Clean or make sure any permanently mounted tubing is clean before installation. • Change or clean tubing when the pump is withdrawn for servicing. • Clean any replaceable or temporary parts. Rev 4-08 26 • Collect equipment blanks on dedicated pumping systems when the tubing is cleaned or replaced. • Clean or make sure dedicated bailers are clean before placing them into the well. • Collect an equipment blank on dedicated bailers before introducing them into the water column. • Suspend dedicated bailers above the water column if they are stored in the well. Sampling Wells Without Plumbing a.) Sampling with Pumps – The following pumps may be used to sample for organics: • Peristaltic pumps • Stainless steel, Teflon or polyethylene bladder pumps • Variable speed stainless steel and Teflon submersible pumps 1. Peristaltic Pump • Volatile Organics: One of three methods may be used. ƒ Remove the drop tubing from the inlet side of the pump; submerge the drop tubing into the water column; prevent the water in the tubing from flowing back into the well; remove the drop tubing from the well; carefully allow the groundwater to drain into the sample vials; avoid turbulence; do not aerate the sample; repeat steps until enough vials are filled. OR ƒ Use the pump to fill the drop tubing; quickly remove the tubing from the pump; prevent the water in the tubing from flowing back into the well; remove the drop tubing from the well; carefully allow the groundwater to drain into the sample vials; avoid turbulence; do not aerate the sample; repeat steps until enough vials are filled. OR ƒ Use the pump to fill the drop tubing; withdraw the tubing from the well; reverse the flow on the peristaltic pumps to deliver the sample into the vials at a slow, steady rate; repeat steps until enough vials are filled. • Extractable Organics: If delivery tubing is not polyethylene or PP, or is not Teflon lined, use pump and vacuum trap method. Connect the outflow tubing from the container to the influent side of the peristaltic pump. Turn pump on and reduce flow until smooth and even. Discard a Rev 4-08 27 small portion of the sample to allow for air space. Preserve (if required), label, and complete field notes. • Inorganic samples: These samples may be collected from the effluent tubing. If samples are collected from the pump, decontaminate all tubing (including the tubing in the head) or change it between wells. Preserve (if required), label, and complete field notes. 2. Variable Speed Bladder Pump • If sampling for organics, the pump body must be constructed of stainless steel and the valves and bladder must be Teflon. All tubing must be Teflon, polyethylene, or PP and any cabling must be sealed in Teflon, polyethylene or PP, or made of stainless steel. • After purging to a smooth even flow, reduce the flow rate. • When sampling for volatile organic compounds, reduce the flow rate to 100-200mL/minute, if possible. 3. Variable Speed Submersible Pump • The housing must be stainless steel. • If sampling for organics, the internal impellers, seals and gaskets must be constructed of stainless steel, Teflon, polyethylene or PP. The delivery tubing must be Teflon, polyethylene or PP; the electrical cord must be sealed in Teflon; any cabling must be sealed in Teflon or constructed of stainless steel. • After purging to a smooth even flow, reduce the flow rate. • When sampling for volatile organic compounds, reduce the flow rate to 100-200mL/minute, if possible. b.) Sampling with Bailers - A high degree of skill and coordination are necessary to collect representative samples with a bailer. 1. General Considerations • Minimize handling of bailer as much as possible. • Wear sampling gloves. • Remove bailer from protective wrapping just before use. • Attach a lanyard of appropriate material. • Use the lanyard to move and position the bailers. • Do not allow bailer or lanyard to touch the ground. • If bailer is certified precleaned, no rinsing is necessary. • If both a pump and a bailer are to be used to collect samples, rinse the exterior and interior of the bailer with sample water from the pump before removing the pump. • If the purge pump is not appropriate for collecting samples (e.g., non-inert components), rinse the bailer by collecting a single bailer of the groundwater to be sampled. • Discard the water appropriately. Rev 4-08 28 • Do not rinse the bailer if Oil and Grease samples are to be collected. 2. Bailing Technique • Collect all samples that are required to be collected with a pump before collecting samples with the bailer. • Raise and lower the bailer gently to minimize stirring up particulate matter in the well and the water column, which can increase sample turbidity. • Lower the bailer carefully into the well to a depth approximately a foot above the water column. When the bailer is in position, lower the bailer into the water column at a rate of 2 cm/sec until the desired depth is reached. • Do not lower the top of the bailer more than one foot below the top of the water table, so that water is removed from the top of the water column. • Allow time for the bailer to fill with aquifer water as it descends into the water column. • Do not allow the bailer to touch the bottom of the well or particulate matter will be incorporated into the sample. Carefully raise the bailer. Retrieve the bailer at the same rate of 2 cm/sec until the bottom of the bailer has cleared to top of the water column. • Lower the bailer to approximately the same depth each time. • Collect the sample. Install a device to control the flow from the bottom of the bailer and discard the first few inches of water. Fill the appropriate sample containers by allowing the sample to slowly flow down the side of the container. Discard the last few inches of water in the bailer. • Repeat steps for additional samples. • As a final step measure the DO, pH, temperature, turbidity and specific conductance after the final sample has been collected. Record all measurements and note the time that sampling was completed. c.) Sampling Low Permeability Aquifers or Wells that have Purged Dry 1. Collect the sample(s) after the well has been purged. Minimize the amount of water removed from the well by using the same pump to purge and collect the sample. If the well has purged dry, collect samples as soon as sufficient sample water is available. 2. Measure the five field parameters temperature, pH, specific conductance, dissolved oxygen and turbidity at the time of sample collection. 3. Advise the analytical laboratory and the client that the usual amount of sample for analysis may not be available. Rev 4-08 29 Appendix D - Collecting Samples from Wells with Plumbing in Place In-place plumbing is generally considered permanent equipment routinely used for purposes other than purging and sampling, such as for water supply. a.) Air Strippers or Remedial Systems - These types of systems are installed as remediation devices. Collect influent and effluent samples from air stripping units as described below. 1. Remove any tubing from the sampling port and flush for one to two minutes. 2. Remove all hoses, aerators and filters (if possible). 3. Open the spigot and purge sufficient volume to flush the spigot and lines and until the purging completion criteria have been met. 4. Reduce the flow rate to approximately 500 mL/minute (a 1/8” stream) or approximately 0.1 gal/minute before collecting samples. 5. Follow procedures for collecting samples from water supply wells as outlined below. b.) Water Supply Wells – Water supply wells with in-place plumbing do not require equipment to be brought to the well to purge and sample. Water supply wells at UST facilities must be sampled for volatile organic compounds (VOCs) and semivolatile compounds (SVOCs). 1. Procedures for Sampling Water Supply Wells • Label sample containers prior to sample collection. • Prepare the storage and transport containers (ice chest, etc.) before taking any samples so each collected sample can be placed in a chilled environment immediately after collection. • You must choose the tap closest to the well, preferably at the wellhead. The tap must be before any holding or pressurization tank, water softener, ion exchange, disinfection process or before the water line enters the residence, office or building. If no tap fits the above conditions, a new tap that does must be installed. • The well pump must not be lubricated with oil, as that may contaminate the samples. • The sampling tap must be protected from exterior contamination associated with being too close to a sink bottom or to the ground. If the tap is too close to the ground for direct collection into the appropriate container, it is acceptable to use a smaller (clean) container to transfer the sample to a larger container. • Leaking taps that allow water to discharge from around the valve stem handle and down the outside of the faucet, or taps in which water tends to run up on the outside of the lip, are to be avoided as sampling locations. Rev 4-08 30 • Disconnect any hoses, filters, or aerators attached to the tap before sampling. • Do not sample from a tap close to a gas pump. The gas fumes could contaminate the sample. 2. Collecting Volatile Organic Samples • Equipment Needed: VOC sample vials [40 milliliters, glass, may contain 3 to 4 drops of hydrochloric acid (HCl) as preservative]; Disposable gloves and protective goggles; Ice chest/cooler; Ice; Packing materials (sealable plastic bags, bubble wrap, etc.); and Lab forms. • Sampling Procedure: Run water from the well for at least 15 minutes. If the well is deep, run water longer (purging three well volumes is best). If tap or spigot is located directly before a holding tank, open a tap after the holding tank to prevent any backflow into the tap where you will take your sample. This will ensure that the water you collect is “fresh” from the well and not from the holding tank. After running the water for at least 15 minutes, reduce the flow of water. The flow should be reduced to a trickle but not so slow that it begins to drip. A smooth flow of water will make collection easier and more accurate. Remove the cap of a VOC vial and hold the vial under the stream of water to fill it. Be careful not to spill any acid that is in the vial. For best results use a low flow of water and angle the vial slightly so that the water runs down the inside of the vial. This will help keep the sample from being agitated, aerated or splashed out of the vial. It will also increase the accuracy of the sample. As the vial fills and is almost full, turn the vial until it is straight up and down so the water won’t spill out. Fill the vial until the water is just about to spill over the lip of the vial. The surface of the water sample should become mounded. It is a good idea not to overfill the vial, especially if an acid preservative is present in the vial. Carefully replace and screw the cap onto the vial. Some water may overflow as the cap is put on. After the cap is secure, turn the vial upside down and gently tap the vial to see if any bubbles are present. If bubbles are present in the vial, remove the cap, add more water and check again to see if bubbles are present. Repeat as necessary. After two samples without bubbles have been collected, the samples should be labeled and prepared for shipment. Store samples at 4° C. Rev 4-08 31 3. Collecting Extractable Organic and/or Metals Samples • Equipment Needed: SVOC sample bottle [1 liter, amber glass] and/or Metals sample bottle [0.5 liter, polyethylene or glass, 5 milliliters of nitric acid (HNO3) preservative]; Disposable gloves and protective goggles; Ice Chest/Cooler; Ice; Packing materials (sealable plastic bags, bubble wrap, etc.); and Lab forms. • Sampling Procedure: Run water from the well for at least 15 minutes. If the well is deep, run the water longer (purging three well volumes is best). If tap or spigot is located directly before a holding tank, open a tap after the holding tank to prevent any backflow into the tap where you will take your sample. This will ensure that the water you collect is “fresh” from the well and not from the holding tank. After running the water for at least 15 minutes, reduce the flow. Low water flow makes collection easier and more accurate. Remove the cap of a SVOC or metals bottle and hold it under the stream of water to fill it. The bottle does not have to be completely filled (i.e., you can leave an inch or so of headspace in the bottle). After filling, screw on the cap, label the bottle and prepare for shipment. Store samples at 4° C. Rev 4-08 32 Appendix E - Collecting Surface Water Samples The following topics include 1.) acceptable equipment selection and equipment construction materials and 2.) standard grab, depth-specific and depth-composited surface water sampling techniques. Facilities which contain or border small rivers, streams or branches should include surface water sampling as part of the monitoring program for each sampling event. A simple procedure for selecting surface water monitoring sites is to locate a point on a stream where drainage leaves the site. This provides detection of contamination through, and possibly downstream of, site via discharge of surface waters. The sampling points selected should be downstream from any waste areas. An upstream sample should be obtained in order to determine water quality upstream of the influence of the site. a.) General Cautions 1. When using watercraft take samples near the bow away and upwind from any gasoline outboard engine. Orient watercraft so that bow is positioned in the upstream direction. 2. When wading, collect samples upstream from the body. Avoid disturbing sediments in the immediate area of sample collection. 3. Collect water samples prior to taking sediment samples when obtaining both from the same area (site). 4. Unless dictated by permit, program or order, sampling at or near man- made structures (e.g., dams, weirs or bridges) may not provide representative data because of unnatural flow patterns. 5. Collect surface water samples from downstream towards upstream. b.) Equipment and Supplies - Select equipment based on the analytes of interest, specific use, and availability. c.) Surface Water Sampling Techniques - Adhere to all general protocols applicable to aqueous sampling when following the surface water sampling procedures addressed below. 1. Manual Sampling: Use manual sampling for collecting grab samples for immediate in-situ field analyses. Use manual sampling in lieu of automatic equipment over extended periods of time for composite sampling, especially when it is necessary to observe and/or note unusual conditions. • Surface Grab Samples - Do not use sample containers containing premeasured amounts of preservatives to collect grab samples. If the sample matrix is homogeneous, then the grab method is a simple and effective technique for collection purposes. If homogeneity is not apparent, based on flow or vertical variations (and should never be assumed), then use other collection protocols. Where practical, use the actual sample container submitted to the laboratory for collecting samples to be analyzed for oil and grease, volatile organic compounds (VOCs), and microbiological samples. This procedure eliminates the possibility of contaminating the sample with an intermediate collection container. The use of Rev 4-08 33 unpreserved sample containers as direct grab samplers is encouraged since the same container can be submitted for laboratory analysis after appropriate preservation. This procedure reduces sample handling and eliminates potential contamination from other sources (e.g., additional sampling equipment, environment, etc.). 1. Grab directly into sample container. 2. Slowly submerge the container, opening neck first, into the water. 3. Invert the bottle so the neck is upright and pointing towards the direction of water flow (if applicable). Allow water to run slowly into the container until filled. 4. Return the filled container quickly to the surface. 5. Pour out a few mL of sample away from and downstream of the sampling location. This procedure allows for the addition of preservatives and sample expansion. Do not use this step for volatile organics or other analytes where headspace is not allowed in the sample container. 6. Add preservatives, securely cap container, label, and complete field notes. If sample containers are attached to a pole via a clamp, submerge the container and follow steps 3 – 5 but omit steps 1 and 2. • Sampling with an Intermediate Vessel or Container: If the sample cannot be collected directly into the sample container to be submitted to the laboratory, or if the laboratory provides prepreserved sample containers, use an unpreserved sample container or an intermediate vessel (e.g., beakers, buckets or dippers) to obtain the sample. These vessels must be constructed appropriately, including any poles or extension arms used to access the sample location. 1. Rinse the intermediate vessel with ample amounts of site water prior to collecting the first sample. 2. Collect the sample as outlined above using the intermediate vessel. 3. Use pole mounted containers of appropriate construction to sample at distances away from shore, boat, etc. Follow the protocols above to collect samples. • Peristaltic Pump and Tubing: The most portable pump for this technique is a 12 volt peristaltic pump. Use appropriately precleaned, silastic tubing in the pump head and attach polyethylene, Tygon, etc. tubing to the pump. This technique is not acceptable for Oil and Grease, EPH, VPH or VOCs. Extractable organics can be collected through the pump if flexible interior-wall Teflon, polyethylene or PP tubing is used in the pump head or if used with the organic trap setup. Rev 4-08 34 1. Lower appropriately precleaned tubing to a depth of 6 – 12 inches below water surface, where possible. 2. Pump 3 – 5 tube volumes through the system to acclimate the tubing before collecting the first sample. 3. Fill individual sample bottles via the discharge tubing. Be careful not to remove the inlet tubing from the water. 4. Add preservatives, securely cap container, label, and complete field notes. • Mid-Depth Grab Samples: Mid-depth samples or samples taken at a specific depth can approximate the conditions throughout the entire water column. The equipment that may be used for this type of sampling consists of the following depth-specific sampling devices: Kemmerer, Niskin, Van Dorn type, etc. You may also use pumps with tubing or double check-valve bailers. Certain construction material details may preclude its use for certain analytes. Many Kemmerer samplers are constructed of plastic and rubber that preclude their use for all volatile and extractable organic sampling. Some newer devices are constructed of stainless steel or are all Teflon or Teflon-coated. These are acceptable for all analyte groups without restriction. 1. Measure the water column to determine maximum depth and sampling depth prior to lowering the sampling device. 2. Mark the line attached to the sampler with depth increments so that the sampling depth can be accurately recorded. 3. Lower the sampler slowly to the appropriate sampling depth, taking care not to disturb the sediments. 4. At the desired depth, send the messenger weight down to trip the closure mechanism. 5. Retrieve the sampler slowly. 6. Rinse the sampling device with ample amounts of site water prior to collecting the first sample. Discard rinsate away from and downstream of the sampling location. 7. Fill the individual sample bottles via the discharge tube. • Double Check-Valve Bailers: Collect samples using double check- valve bailers if the data requirements do not necessitate a sample from a strictly discrete interval of the water column. Bailers with an upper and lower check-valve can be lowered through the water column. Water will continually be displaced through the bailer until the desired depth is reached, at which point the bailer is retrieved. Sampling with this type of bailer must follow the same protocols outlined above, except that a messenger weight is not applicable. Although not designed specifically for this kind of sampling, a bailer is acceptable when a mid-depth sample is required Rev 4-08 35 1. As the bailer is dropped through the water column, water is displaced through the body of the bailer. The degree of displacement depends upon the check-valve ball movement to allow water to flow freely through the bailer body. 2. Slowly lower the bailer to the appropriate depth. Upon retrieval, the two check valves seat, preventing water from escaping or entering the bailer. 3. Rinse the sampling device with ample amounts of site water prior to collecting the first sample. 4. Fill the individual sample bottles via the discharge tube. Sample bottles must be handled as described above. • Peristaltic Pump and Tubing: The most portable pump for this technique is a 12 volt peristaltic pump. Use appropriately precleaned, silastic tubing in the pump head and attach HDPE, Tygon, etc. tubing to the pump. This technique is not acceptable for Oil and Grease, EPH, VPH or VOCs. Extractable organics can be collected through the pump if flexible interior-wall Teflon, polyethylene or PP tubing is used in the pump head, or if used with an organic trap setup. 1. Measure the water column to determine the maximum depth and the sampling depth. 2. Tubing will need to be tied to a stiff pole or be weighted down so the tubing placement will be secure. Do not use a lead weight. Any dense, non-contaminating, non- interfering material will work (brick, stainless steel weight, etc.). Tie the weight with a lanyard (braided or monofilament nylon, etc.) so that it is located below the inlet of the tubing. 3. Turn the pump on and allow several tubing volumes of water to be discharged before collecting the first sample. 4. Fill the individual sample bottles via the discharge tube. Sample bottles must be handled as described above. Rev 4-08 36 Attachment 3 New Guidelines for the Submittal of Environmental Monitoring Data Solid Waste Section Memorandum, October 27, 2006 North Carolina Department of Environment and Natural Resources Dexter R. Matthews, Director Division of Waste Management Michael F. Easley, Governor William G. Ross Jr., Secretary 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone: 919-508-8400 \ FAX: 919-733-4810 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper October 27, 2006 To: SW Director/County Manager/Consultant/Laboratory From: NC DENR-DWM, Solid Waste Section Re: New Guidelines for Electronic Submittal of Environmental Monitoring Data The Solid Waste Section receives and reviews a wide variety of environmental monitoring data from permitted solid waste management facilities, including the results from groundwater and surface water analyses, leachate samples, methane gas readings, potentiometric measurements, and corrective action data. We are in the process of developing a database to capture the large volume of data submitted by facilities. To maintain the integrity of the database, it is critical that facilities, consultants, and laboratories work with the Solid Waste Section to ensure that environmental samples are collected and analyzed properly with the resulting data transferred to the Solid Waste Section in an accurate manner. In order to better serve the public and to expedite our review process, the Solid Waste Section is requesting specific formatting for environmental monitoring data submittals for all solid waste management facilities. Effective, December 1, 2006, please submit a Solid Waste Environmental Monitoring Data Form in addition to your environmental monitoring data report. This form will be sent in lieu of your current cover letter to the Solid Waste Section. The Solid Waste Environmental Monitoring Data Form must be filled out completely, signed, and stamped with a Board Certified North Carolina Geologist License Seal. The solid waste environmental monitoring data form will include the following: 1. Contact Information 2. Facility Name 3. Facility Permit Number 4. Facility Address 5. Monitoring Event Date (MM/DD/YYYY) 6. Water Quality Status: Monitoring, Detection Monitoring, or Assessment Monitoring 7. Type of Data Submitted: Groundwater Monitoring Wells, Groundwater Potable Wells, Leachate, Methane Gas, or Corrective Action Data 8. Notification of Exceedance of Groundwater, Surface Water, or Methane Gas (in table form) 9. Signature 10. North Carolina Geologist Seal Page 2 of 2 Most of these criteria are already being included or can be added with little effort. The Solid Waste Environmental Monitoring Data Form can be downloaded from our website: http://www.wastenotnc.org/swhome/enviro_monitoring.asp. The Solid Waste Section is also requesting a new format for monitoring wells, potable wells, surface water sampling locations, and methane probes. This format is essential in the development and maintenance of the database. The Solid Waste Section is requesting that each sampling location at all North Carolina solid waste management facilities have its own unique identification number. We are simply asking for the permit number to be placed directly in front of the sampling location number (example: 9901-MW1 = Permit Number 99-01 and Monitoring Well MW-1). No changes will need to be made to the well tags, etc. This unique identification system will enable us to accurately report data not only to NCDENR, but to the public as well. We understand that this new identification system will take some time to implement, but we feel that this will be beneficial to everyone involved in the long term. Additionally, effective December 1, 2006, the Practical Quantitation Limits (PQLs) established in 1994 will change. The Solid Waste Section is requiring that all solid waste management facilities use the new Solid Waste Reporting Limits (SWRL) for all groundwater analyses by a North Carolina Certified Laboratory. Laboratories must also report any detection of a constituent even it is detected below the new SWRL (e.g., J values where the constituent was detected above the detection limit, but below the quantitation limit). PQLs are technology-based analytical levels that are considered achievable using the referenced analytical method. The PQL is considered the lowest concentration of a contaminant that the lab can accurately detect and quantify. PQLs provided consistency and available numbers that were achievable by the given analytical method. However, PQLs are not health-based, and analytical instruments have improved over the years resulting in lower achievable PQLs for many of the constituents. As a result, the Solid Waste Section has established the SWRLs as the new reporting limits eliminating the use of the PQLs. We would also like to take this opportunity to encourage electronic submittal of the reports. This option is intended to save resources for both the public and private sectors. The Solid Waste Section will accept the entire report including narrative text, figures, tables, and maps on CD-ROM. The CD-ROM submittal shall contain a CD-ROM case and both CD-ROM and the case shall be labeled with the site name, site address, permit number, and the monitoring event date (MM/DD/YYYY). The files may be a .pdf, .txt, .csv, .xls, or .doc type. Also, analytical lab data should be reported in an .xls file. We have a template for analytical lab data available on the web at the address listed above. If you have any questions or concerns, please call (919) 508-8400. Thank you for your anticipated cooperation in this matter. Attachment 4 Environmental Monitoring Data Form Attachment 5 February 23, 2007 Addendum to the October 27, 2006 Memorandum 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 1 North Carolina Department of Environment and Natural Resources Dexter R. Matthews, Director Division of Waste Management Michael F. Easley, Governor William G. Ross Jr., Secretary February 23, 2007 EMORANDUM M o: Solid Waste Directors, Landfill Operators, North Carolina Certified Laboratories, and Consultants rom: North Carolina Division of Waste Management, Solid Waste Section Re: ste Section Memorandum Regarding New Guidelines for Electronic Submittal of Environmental Data. arolina Solid Waste Section memo titled, “New Guidelines for Electronic Submittal of Environmental Data.” adily available laboratory analytical methodology and current health-based groundwater protection standards. efinitions T F Addendum to October 27, 2006, North Carolina Solid Wa The purpose of this addendum memorandum is to provide further clarification to the October 27, 2006, North C The updated guidelines is in large part due to questions and concerns from laboratories, consultants, and the regulated community regarding the detection of constituents in groundwater at levels below the previous practical quantitation limits (PQLs). The North Carolina Solid Waste Section solicited feedback from the regulated community, and, in conjunction with the regulated community, developed new limits. The primary purpose of these changes was to improve the protection of public health and the environment. The North Carolina Solid Waste Section is concerned about analytical data at these low levels because the earliest possible detection of toxic or potentially carcinogenic chemicals in the environment is paramount in the North Carolina Solid Waste Section’s mission to protect human health and the environment. Low level analytical data are critical for making the correct choices when designing site remediation strategies, alerting the public to health threats, and protecting the environment from toxic contaminants. The revised limits were updated based on re D s are also an attempt to clarify the meaning of these rms as used by the North Carolina Solid Waste Section. e that can be measured and ported with 99% confidence that the analyte concentration is greater than zero. is the minimum concentration of a target analyte that can be accurately determined by the referenced method. Many definitions relating to detection limits and quantitation limits are used in the literature and by government agencies, and commonly accepted procedures for calculating these limits exist. Except for the Solid Waste Section Limit and the North Carolina 2L Standards, the definitions listed below are referenced from the Environmental Protection Agency (EPA). The definition te Method Detection Limit (MDL) is the minimum concentration of a substanc re Method Reporting Limit or Method Quantitation Limit (MRL or MQL) Practical Quantitation Limit (PQL) is a quantitation limit that represents a practical and routinely achievable quantitation limit with a high degree of certainty (>99.9% confidence) in the results. Per EPA Publication Number SW-846, the PQL is the lowest concentration that can be reliably measured within specified limits of precision and accuracy for a specific laboratory analytical method during routine laboratory operating conditions in accordance with "Test Methods for Evaluating Solid Wastes, Physical/Chemical Methods. The PQL appears in 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 2 older NCDENR literature; however, it is no longer being used by the North Carolina Solid aste Section. n. The nomenclature of the SWRL described in the October 7, 2006, memorandum has changed to the SWSL. C 2L .0200, Classifications and Water Quality Standards Applicable to the roundwaters of North Carolina. ethod Detection Limits (MDLs) W Solid Waste Section Limit (SWSL) is the lowest amount of analyte in a sample that can be quantitatively determined with suitable precision and accuracy. The SWSL is the concentration below which reported analytical results must be qualified as estimated. The SWSL is the updated version of the PQL that appears in older North Carolina Solid Waste Section literature. The SWSL is the limit established by the laboratory survey conducted by the North Carolina Solid Waste Sectio 2 North Carolina 2L Standards (2L) are water quality standards for the protection of groundwaters of North Carolina as specified in 15A NCA G M he North Carolina Solid Waste Section is now quiring laboratories to report to the method detection limit. atories generally report the highest method detection limit for all the instruments sed for a specific method. ata below unspecified or non-statistical reporting limits severely biases data sets and restricts their usefulness. olid Waste Section Limits (SWSLs) Clarification of detection limits referenced in the October 27, 2006, memorandum needed to be addressed because of concerns raised by the regulated community. T re Method detection limits are statistically determined values that define the concentration at which measurements of a substance by a specific analytical protocol can be distinguished from measurements of a blank (background noise). Method detection limits are matrix-specific and require a well defined analytical method. In the course of routine operations, labor u In many instances, the North Carolina Solid Waste Section gathers data from many sources prior to evaluating the data or making a compliance decision. Standardization in data reporting significantly enhances the ability to interpret and review data because the reporting formats are comparable. Reporting a method detection limit alerts data users of the known uncertainties and limitations associated with using the data. Data users must understand these limitations in order to minimize the risk of making poor environmental decisions. Censoring d S nd surface water data reported to the North Carolina Solid Waste ection. The PQLs will no longer be used. Due to comments from the regulated community, the North Carolina Solid Waste Section has changed the nomenclature of the new limits referenced on Page 2 of the October 27, 2006, memorandum, from the North Carolina Solid Waste Reporting Limits (SWRL) to the Solid Waste Section Limits (SWSL). Data must be reported to the laboratory specific method detection limits and must be quantifiable at or below the SWSL. The SWSLs must be used for both groundwater aS The North Carolina Solid Waste Section has considered further feedback from laboratories and the regulated community and ha 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 3 s made some additional changes to the values of the SWSLs. These changes may be viewed ttp://www.wastenotnc.org/sw/swenvmonitoringlist.asp nalytical Data Reporting Requirements on our webpage: h A al boratory method detection limit with all analytical laboratory results along with the following requirements: oncentration, compliance action may not be taken unless it is statistically significant crease over background. hese analytical results may require additional confirmation. he possibility that a constituent concentration may exceed the North Carolina 2L Standards in the ture. hese analytical results may be used for compliance without further confirmation. will be returned and deemed unacceptable. Submittal of unacceptable data may lead to lectronic Data Deliverable (EDD) Submittal The strategy for implementing the new analytical data reporting requirements involves reporting the actula 1) Any analyte detected at a concentration greater than the MDL but less than the SWSL is known to be present, but the uncertainty in the value is higher than a value reported above the SWSL. As a result, the actual concentration is estimated. The estimated concentration is reported along with a qualifier (“J” flag) to alert data users that the result is between the MDL and the SWSL. Any analytical data below quantifiable levels should be examined closely to evaluate whether the analytical data should be included in any statistical analysis. A statistician should make this determination. If an analyte is detected below the North Carolina 2L Standards, even if it is a quantifiable c in T 2) Any analyte detected at a concentration greater than the SWSL is present, and the quantitated value can be reported with a high degree of confidence. These analytes are reported without estimated qualification. The laboratory’s MDL and SWSL must be included in the analytical laboratory report. Any reported concentration of an organic or inorganic constituent at or above the North Carolina 2L Standards will be used for compliance purposes, unless the inorganic constituent is not statistically significant). Exceedance of the North Carolina 2L Standards or a statistically significant increase over background concentrations define when a violation has occurred. Any reported concentration of an organic or inorganic constituent at or above the SWSL that is not above an North Carolina 2L Standard will be used as a tool to assess the integrity of the landfill system and predict t fu T Failure to comply with the requirements described in the October 27, 2006, memorandum and this addendum to the October 27, 2006, memorandum will constitute a violation of 15A NCAC 13B .0601, .0602, or .1632(b), and the analytical data enforcement action. E he analytical laboratory data. This option is intended to save resources r both the public and private sectors. The North Carolina Solid Waste Section would also like to take this opportunity to encourage electronic submittal of the reports in addition to tfo The North Carolina Solid Waste Section will accept the entire report including narrative text, figures, tables, and maps on CD-ROM. Please separate the figures and tables from the report when saving in order to keep the size of the files smaller. The CD-ROM submittal shall contain a CD-ROM case and both CD 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 4 -ROM and the ase shall be labeled with the site name, site address, permit number, and the monitoring event date ab data and field data. This template is available on our webpage: ttp://www.wastenotnc.org/swhome/enviro_monitoring.asp. Methane monitoring data may also be submitted ry or exceeds 25% of the LEL facility structures (excluding gas control or recovery system components), include the exceedance(s) on the you have any questions or concerns, please feel free to contact Jaclynne Drummond (919-508-8500) or Ervin Thank you for your continued cooperation with this matter. c (MM/DD/YYYY). The reporting files may be submitted as a .pdf, .txt, .csv, .xls,. or .doc type. Also, analytical lab data and field data should be reported in .xls files. The North Carolina Solid Waste Section has a template for analytical l h electronically in this format. Pursuant to the October 27, 2006, memorandum, please remember to submit a Solid Waste Section Environmental Monitoring Reporting Form in addition to your environmental monitoring data report. This form should be sealed by a geologist or engineer licensed in North Carolina if hydrogeologic or geologic calculations, maps, or interpretations are included with the report. Otherwise, any representative that the facility owner chooses may sign and submit the form. Also, if the concentration of methane generated by the facility exceeds 100% of the lower explosive limits (LEL) at the property bounda in North Carolina Solid Waste Section Environmental Monitoring Reporting Form. If Lane (919-508-8520). Attachment 6 October 16, 2007 Memorandum 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 1 North Carolina Department of Environment and Natural Resources October 16, 2007 EMORANDUM Dexter R. Matthews, Director Division of Wa e Management st Michael F. Easley, Governor William G. Ross Jr., Secretary M To: Operators, North Carolina Certified Laboratories, and Consultants rom: North Carolina Division of Waste Management, Solid Waste Section Re: ring Data for North Carolina Solid Waste Management Facilities and provide a reminder of formats for environmental monitoring data bmittals. ese changes was to improve the protection of public health and the nvironment. reported to the North Carolina Solid Waste Section. The PQLs will no nger be used. ted can be directed to the North Carolina Department of Health nd Human Services. Solid Waste Directors, Landfill F Environmental Monito The purpose of this memorandum is to provide a reiteration of the use of the Solid Waste Section Limits (SWSLs), provide new information on the Groundwater Protection Standards, su The updated guidelines are in large part due to questions and concerns from laboratories, consultants, and the regulated community regarding the detection of constituents in groundwater at levels below the previous Practical Quantitation Limits (PQLs). The North Carolina Solid Waste Section solicited feedback from the regulated community, and, in conjunction with the regulated community, developed new limits. The primary purpose of the Data must be reported to the laboratory specific method detection limits and must be quantifiable at or below the SWSLs. The SWSLs must be used for both groundwater and surface water datalo In June 2007, we received new information regarding changes to the Groundwater Protection Standards. If a North Carolina 2L Groundwater Standard does not exist, then a designated Groundwater Protection Standard is used pursuant to 15A NCAC 13B .1634. Toxicologists with the North Carolina Department of Health and Human Services calculated these new Groundwater Protection Standards. Questions regarding how the standards were calcula a 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 2 every year or sooner if new scientific and toxicological data become available. lease review our website periodically for any changes to the 2L NC Standards, ic updates will be noted on our ebsite. wastenotnc.org/sw/swenvmonitoringlist.asp We have reviewed the new results from the North Carolina Department of Public Health and have updated our webpage accordingly. The list of Groundwater Protection Standards, North Carolina 2L Standards and SWSLs are subject to change and will be reviewed P Groundwater Protection Standards, or SWSLs. Specifw http://www. ental monitoring data In addition, the following should be included with environmsubmittals: 1. Environmental Monitoring Data Form as a cover sheet: http://www.wastenotnc.org/swhome/EnvMonitoring/NCEnvMonRptForm.pdf 2. Copy of original laboratory results. 3. Table of detections and discussion of 2L exceedances. 4. Electronic files on CD or sent by email. These files should include the written report as Portable Document Format (PDF) file and the laboratory data as an excel file following a the format of the updated Electronic Data Deliverable (EDD) template on our website: http://www.wastenotnc.org/swhome/enviro_monitoring.asp If you have any questions or concerns, please feel free to contact Donald Herndon (919- 08-8502), Ervin Lane (919-508-8520) or Jaclynne Drummond (919-508-8500). Thank you for your continued cooperation with these matters. 5 Attachment 7 November 5, 2014 Memorandum 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 1 November 5, 2014 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 The Solid Waste Section is continuing its efforts to improve efficiencies in document management. All groundwater, surface water, soil, sediment, and landfill gas documents submitted to the Solid Waste Section are stored electronically and are made readily available for the public to view on our webpage. Please remember that hard copies/paper copies are not required, and should not be submitted. The submittal of these electronic documents following a consistent electronic document protocol will also assist us in our review. Please follow these procedures when submitting all groundwater, surface water, soil, sediment, and landfill gas documents to the Solid Waste Section. Submittal Method and Formatting  All files must be in portable document format (pdf) except for Electronic Data Deliverables (EDDs) unless otherwise specified by the Solid Waste Section. All pdf files should meet these requirements: o Optical Characteristic Recognition (OCR) applied; o Minimum of 300 dpi; o Free of password protections and/or encryptions (applies to EDDs as well); o Optimized to reduce file size; and o Please begin using the following naming convention when submitting all electronic files: Permit Number (00-00)_Date of Document (YYYYMMDD). For example: 00-00_20140101.  Please submit all files via email or by file transfer protocol (FTP) via email to the appropriate Hydrogeologist unless otherwise specified by the Solid Waste Section. If the electronic file is greater than 20 MB, please submit the file via FTP or on a CD. If submitting a CD, please mail the CD to the appropriate Hydrogeologist. The CD should be labeled with the facility name, permit number, county, name of document, date of monitoring event (if applicable), and the date of document.  Please be sure a signed Environmental Monitoring Data Form is submitted as part of the electronic file for all water quality and landfill gas documents (monitoring, alternate source demonstration, assessment, investigation, corrective action). This completed form should be the first page of the document before the cover/title page and should not be submitted as an individual file. Blank forms can be downloaded at http://www.wastenotnc.org/swhome/EnvMonitoring/NCEnvMonRptForm.pdf Monitoring Data Monitoring data documents may include any or all of the following: 1) groundwater and surface water monitoring; 2) soil and sediment, and 3) landfill gas monitoring. In addition to the above procedures, at a minimum, please include the following: Groundwater and Surface Water Monitoring  A copy of the laboratory report(s).  A copy of the sampling log(s).  A separate table of detections and exceedances for each monitoring location. 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 2 o All analytical results should be reported in micrograms per liter (ug/L) except for field parameters and specific Monitored Natural Attenuation (MNA) parameters. o Please also include the laboratory’s method detection limit (MDL) in ug/L, the Solid Waste Section Limit (SWSL) in ug/L, the appropriate NC regulatory standard in ug/L (2L, 2B, GWPS, IMAC), and the Federal Maximum Contaminant Level (MCL) in ug/L. o Please BOLD each exceedance result.  A separate table of field parameters for each monitoring location.  An Electronic Data Deliverable (EDD) spreadsheet for each monitoring event submitted in the correct format. All analytical results should be reported in micrograms per liter (ug/L) except for field parameters and specific Monitored Natural Attenuation (MNA) parameters. The blank EDD template can be downloaded at http://www.wastenotnc.org/swhome/enviro_monitoring.asp. Please pay attention to the formats within the spreadsheet. Any EDD received that is not formatted correctly will be emailed back to be resubmitted via email within five (5) days.  A separate groundwater monitoring well construction table. o Please also include the date the well was drilled, well diameter, total well depth, depth to top of screened interval (in feet), screened interval (in feet), geology of screened interval, TOC elevation, ground elevation, groundwater elevation, GPS coordinates (latitude and longitude), and depth to water (in feet).  A separate groundwater table with groundwater flow rate(s).  A recent facility figure that includes labeled groundwater and surface water monitoring locations.  A groundwater flow map with an arrow(s) indicating flow direction(s), including date the measurements were taken. Soil and Sediment Sampling  A copy of the laboratory report(s).  A copy of the sampling log(s).  A separate table of detections and exceedances for each sampling location. o Please also include the results in micrograms per liter (ug/L), the laboratory’s method detection limit (MDL) in ug/L, and the appropriate NC regulatory standard (PSRG) in ug/L. o Please BOLD each exceedance result.  A separate table of soil and/or sediment characteristics.  A recent facility figure that includes labeled sampling locations. Landfill Gas Monitoring  A blank Landfill Gas Monitoring Data Form can be found within the Landfill Gas Monitoring Guidance document and can be downloaded at http://portal.ncdenr.org/c/document_library/get_file?uuid=da699f7e-8c13-4249-9012- 16af8aefdc7b&groupId=38361.  A separate table of landfill gas detections and exceedances for each monitoring location. Please BOLD each exceedance result.  A recent facility figure that includes labeled landfill gas monitoring locations (both permanent and temporary). If you have any questions or concerns regarding electronic submittals, please feel free to contact the Hydrogeologist overseeing your facility. The Solid Waste Section greatly appreciates your assistance on this matter. Working together, we can continue to provide excellent customer service to you and to the public.  Jackie Drummond, Asheville Regional Office, 828-296-4706, jaclynne.drummond@ncdenr.gov  Ervin Lane, Raleigh Central Office, 919-707-8288, ervin.lane@ncdenr.gov  Elizabeth Werner, Raleigh Central Office, 919-707-8253, elizabeth.werner@ncdenr.gov  Christine Ritter, Raleigh Central Office, 919-707-8254, christine.ritter@ncdenr.gov  Perry Sugg, Raleigh Central Office, 919-707-8258, perry.sugg@ncdenr.gov Attachment 8 Monitoring well construction logs   5105 Harbour Towne Drive •Raleigh • North Carolina • 27604 919-418-4375 (Mobile) • E-mail: david@davidgarrettpe.com September 19, 2013 Mr. Ervin Lane NC Division of Waste Management Solid Waste Section Mail Service Center 1646 Raleigh, NC 27699-1646 RE: Discussion of Water Quality Monitoring Data Request for Monitoring Well Reduction Gold Hill Road C&D Landfill (Randolph County, North Carolina) Permit #7606-CDLF-2001 Dear Mr. Lane: On behalf of Gold Hill Road C&D Landfill, I am pleased the following discussion of hydrogeologic conditions and apparent trends in the ground water monitoring data for the referenced site. This discussion is presented to support the facility’s request for a reduction in the number of wells that must be monitored during the remainder of operations and during the post-closure period. Phase 2 of the CDLF is the active disposal area, covering approximately 13 acres, which has undergone development of most of the authorized footprint. Phase 1 contains stockpiled LCID, but this phase is permitted for future C&D – the nomenclature is carried over from earlier permitting activities. At the current waste intake, it appears that Phase 1 will not be developed as a CDLF for many years. There are nine wells and three surface locations being monitored, which affects the closure/post- closure bond requirements, as well as operational costs. The current monitoring network consists of: Phase 2 (active CDLF) Phase 1 (LCID, future CDLF) MW-1 (background well), MW-19 (up gradient) MW-4 (cross-gradient), MW-15 (cross-gradient wells) MW-8, MW-10A, MW-16, MW-17, and MW-18 (down gradient wells) Surface water sampling includes SW-3 (background), SW-1 and SW-2 (down gradient). I believe the current CDLF can be effectively monitored with four wells, MW-1, MW-4, MW-10A, and MW-18, and two surface locations, SW-2 and SW-3. Gold Hill Road C&D Landfill – Randolph County, North Carolina September 19, 2013 Water Quality Monitoring Data Discussion Page 2 Please refer to the attached figure, Drawing MP-1, taken from the most recent monitoring report. The hydrogeology is characterized as a shallow, short-segmented, “closed loop” basin, i.e., recharge occurs in the higher elevations, including most of the site, discharge occurs along the on-site stream to the northwest. The distance water travels is hundreds of feet, not miles. The uppermost aquifer occurs within the transitional boundary between fine-grain surficial soil and the deeper parent bedrock (argillite). Depths of the bedrock are on the order of 20 to 35 feet; the ground water depths typically vary from 10 to 28 feet in the higher elevations (MW-1) and 8 to 14 feet in the lower elevations (MW-4). The bedrock is not monitored based on earlier permitting work; deeper wells are available to activate should an impact be detected in the uppermost aquifer. Summarized well screen data, water level data, and field parameters are presented on Table 1. A ground water divide coincides along Gold Hill Road; the groundwater basin coincides with the localized surface water basin and is contained between the road and the creek without significant outside influence – hence the term “closed loop” – thus the facility controls the ground use from the right-of-way to the creek relative to the inactive Phase 1. There is an undeveloped parcel not owned by the facility up gradient of the active Phase 2; the facility background well is cross gradient of this parcel, but MW-10A is down gradient – nothing is known or implied concerning this parcel, but this is the only land within the small drainage basin not controlled by the facility. There are no ground water wells down gradient of the facility. Historical ground water level data show large fluctuations in response to significant climatic trends over the last few years. The fluctuations are typically larger in the higher elevations of the site, as would be expected, and these trends reflect a tremendous change in the volumes of water moving beneath the site over time. This variation in water volumes drives the “seasonality” seen in the data. In the report for latest groundwater sampling event (March 2013), a discussion was presented that tied the water level fluctuations to variation in the concentrations of certain inorganic constituents. The following graph of the last few years of water level data was used to facilitate the discussion. 680.00 700.00 720.00 740.00 760.00 780.00 800.00 3/ 2 9 / 2 0 1 0 9/ 2 9 / 2 0 1 0 3/ 2 9 / 2 0 1 1 9/ 2 1 / 2 0 1 1 3/ 2 1 / 2 0 1 2 9/ 1 1 / 2 0 1 2 3/ 1 9 / 2 0 1 3 MW1 MW19 MW15 MW4 MW16 MW17 MW18 MW8 MW10A Linear (MW1) Ground water elevations Gold Hill Road C&D Landfill – Randolph County, North Carolina September 19, 2013 Water Quality Monitoring Data Discussion Page 3 Please refer to the March 2013 sampling report for additional discussion concerning geologic conditions at the site, including turbidity and background constituents. Here, let it suffice to acknowledge the fact that the whole region is a mining district, with gold and various metal-sulfide minerals common in the bedrock – this leads to the presence of several metallic species found at high background levels. Sampling data shows concentrations of many of these elements that exceed the Solid Waste Section Limit (SWSL) and or the standards of 15A NCAC 2L (the 2L standards). Several metals have been detected frequently and chronically above the SWSL and/or 2L standards, at both the background well (MW-1) and background surface water location (SW-3), in addition to detection in the compliance wells. Cobalt, vanadium, cadmium, barium, beryllium, chromium, copper, iron, lead, manganese, mercury, nickel, selenium, and zinc are included in this trend. Historic groundwater quality data for the past few years is presented on Table 2. The data are highly seasonal and are believed to be tied to turbidity and/or exacerbated by undefined redox reactions between the recharge and discharge zones; this is characteristic with high background presence. Other Appendix I inorganic constituents, alkalinity, chloride and TDS, are above the SWSL at the monitoring wells, including the background well, but these parameters are below the respective 2L standards. These constituents are likely also tied to the background. Detection of Appendix I organic constituents over time is sparse and erratic, with no discernible trend – the constituents that have been detected are those commonly associated with sampling or laboratory contaminants. None of the detected Appendix I organic constituents exceed the SWSL or 2L standards. Overall, there is no indication that the landfill is causing, or contributing to, any degradation of ground water quality at this facility. The series of charts, presented as Attachments 1 and 2, show various data trends used to distinguish any differences between the Phase 1 wells, which we would like to decommission, and the Phase 2 wells. Attachment 1 shows temporal trends for groups of monitored constituents within individual wells. Although the groupings result in a scale that is not usable for compliance demonstrations, the seasonal trends are typically clear and long-term trends can be discerned for some constituents. A direct relationship between the concentrations of metals and turbidity is recognized. A large reduction of turbidity across the board observed in 2011, reflected by nearly every inorganic constituent, is likely due a change in sampling technique. I need to study the earlier data further to determine exactly what caused this reduction, whereas the change appears more significant than seasonality alone. However, many of the 2L and/or SWSL exceedances became less severe. Attachment 2 shows the variation in selected constituents from one well to another. The same relationship between turbidity and concentration of metals can be seen. However, the parameters alkalinity, chloride, and TDS appear to be independent of turbidity. These data show similarity between the wells, in addition to seasonality. What is interesting about these data is the fact that higher concentrations of some constituents are observed in the up gradient wells MW-1 and MW-19. Gold Hill Road C&D Landfill – Randolph County, North Carolina September 19, 2013 Water Quality Monitoring Data Discussion Page 4 A detailed analysis of the data has not been completed, however, it is apparent that differences in the Phase 1 wells and Phase 2 wells are not large, which supports a preliminary conclusion made in the report for the March 2013 sampling report that the monitoring program is influenced by high background values of metals, and it does not appear that the landfill has much impact on the data. It should be noted that no Appendix I organic constituents were detected in the surface water samples. It should also be noted that with other monitoring programs for CDLFs and MSWLFs under my purview, for the first phase we have started with an initial small set of wells (which were approved at the time of permitting) and added to the monitoring network as the facility expanded. If this same course of action was pursued at this facility, we would not need the Phase 1 wells (keeping in mind the backward nomenclature) until some future time. Ostensibly, the existing wells would be left in place and, once the next phase is permitted for construction, the wells would be reactivated. The September 2013 sampling event was just completed, so the requested changes, if approved, would be implemented beginning with the March 2014 sampling event. I look forward to discussing this matter, and on behalf of the facility, I appreciate your consideration of this matter. Please contact me at your earliest convenience with questions or comments. Sincerely, G. David Garrett, P.G., P.E. 9/19/2013 cc: Mr. Al Morton – Gold Hill Road C&D Landfill, Inc. Attachments Table 1 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 Well Ground TOC Stickup Groundwater Groundwater ID Elev. Elev. (feet) Top* Bottom Top Bottom Depth** Elevation Temp. C pH S.C. Turbidity (feet) (feet) (feet) (feet) (feet) (feet) uMho/cm (ntu) MW1 802.54 804.99 2.45 20.40 35.40 782.14 767.14 27.63 774.91 16 6.5 346 65.0 MW4 758.61 761.25 2.64 15.00 30.00 743.61 728.61 25.26 733.35 15 5.7 50 3.6 MW8 720.58 723.02 2.44 6.00 21.00 714.58 699.58 14.61 705.97 14 5.5 61 45.0 MW10A 733.20 735.78 2.58 15.00 30.00 741.67 703.20 23.17 710.03 14 5.3 50 36.0 MW15 751.67 754.12 2.45 10.00 25.00 732.78 726.67 12.36 739.31 14 5.9 150 80.0 MW16 742.78 745.20 2.42 10.00 25.00 717.43 717.78 19.96 722.82 15 6.2 259 22.0 MW17 732.43 734.67 2.24 15.00 30.00 712.59 702.43 19.54 712.89 15 6.3 185 4.0 MW18 722.59 724.50 1.91 10.00 25.00 697.59 697.59 9.92 712.67 14 5.7 91 25.0 MW19 782.81 784.76 1.95 20.00 35.00 747.81 747.81 17.86 764.95 15 6.5 236 6.7 * Referenced from ground surface **Referenced from top of casing ntu = Nephelometric Turbidity Units Sampling Date 3/19/2013 Screen Interval Screen Elevation Field Parameters NM = Not Measured S.C. = Specific Conductance Gold Hill Road CDLF 7/25/2013 Page 1 of 1 Sampling Point:CAS ANALYSIS MDL SWSL 2L STD Max Min Sample Date: NUMBER METHOD ug/l ug/l ug/l ug/l ug/l PH (field measurement) SW320 SM4500HB NE 7.3 4.8 Total Alkalinity SW337 SM2320B 1000 1000 NE 228000 8 Chloride SW301 SM4500-CLB 5000 5000 250000 24000 4000 Total Dissolved Residue SW311 SM2540C 1000 1000 500000 420000 24000 Sulfate SW315 SM426C 5000 250000 250000 152000 7 Antimony 7440-36-0 EPA200.8 0.14 6 1* 1.1 0.02 Arsenic 7440-38-2 EPA200.8 0.1 10 10 12 0.1 Barium 7440-39-3 EPA200.8 0.02 100 700 763 4.8 Beryllium 7440-41-7 EPA200.8 0.02 1 4* 14 0.02 Cadmium 7440-43-9 EPA200.8 0.02 1 2 24 0.02 Cobalt 7440-48-4 EPA200.8 0.03 10 1* 16 0.02 Copper 7440-50-8 EPA200.8 0.02 10 1000 85 0.02 Total Chromium 7440-47-3 EPA200.8 0.04 10 10 18 0.04 Iron 7439-89-6 SM3111B 15.9 300 300 234750 15.9 Manganese 7439-96-5 EPA200.7 0.61 50 50 23122 1.5 Lead 7439-92-1 EPA200.8 0.02 10 15 54 0.02 Mercury 7439-97-6 EPA200.8 0.05 0.2 1 0.9 0.01 Nickel 7440-02-0 EPA200.8 0.04 50 100 93 0.04 Selenium 7782-49-2 EPA200.8 0.2 10 20 42 0.17 Silver 7440-22-4 EPA200.8 0.02 10 20 2.2 0.02 Thallium 7440-28-0 EPA200.8 0.02 5.5 0.28 0.45 0.02 Vanadium 7440-62-2 EPA200.8 0.14 25 0.3 39 0.28 Zinc 7440-66-6 EPA200.8 0.24 10 1000 719 2.2 Turbidity SW330 SM2130B 1 1 NE 13600 1.6 Conductivity uMho/cm (at 25c) SW323 SM2510B 1 1 NE 559 24 Temperature SW325 SM2550B 24 5 Static Water Level SW318 Well Depth SW411 Chloromethane 74-87-3 EPA8260B 0.77 1 3 1 0.3 Vinyl Chloride 75-01-4 EPA8260B 0.63 1 0.03 0.63 0.63 Bromomethane 74-83-9 EPA8260B 0.67 10 10* 0.67 0.67 Chloroethane 75-00-3 EPA8260B 0.48 10 3000 0.48 0.48 Trichlorofluoromethane 75-69-4 EPA8260B 0.24 1 2000 1 0.24 1,1-Dichloroethene 75-35-4 EPA8260B 0.17 5 5 0.17 0.17 Acetone 67-64-1 EPA8260B 9.06 100 6000 9.06 1.3 Iodomethane 74-88-4 EPA8260B 0.26 10 10 0.26 0.26 Carbon Disulfide 75-15-0 EPA8260B 0.23 100 700 0.23 0.23 Methylene Chloride 75-09-2 EPA8260B 0.64 1 5 2.3 0.64 trans-1,2-Dichloroethene 156-60-5 EPA8260B 0.23 5 100 0.23 0.23 1,1-Dichloroethane 75-34-3 EPA8260B 0.20 5.00 6.00 0.20 0.2 Vinyl Acetate 108-05-4 EPA8260B 0.20 50.00 88* 0.20 0.2 Cis-1,2-Dichloroethene 156-59-2 EPA8260B 0.25 5 70 0.25 0.25 2-Butanone 78-93-3 EPA8260B 2.21 100 4000 4.5 0.9 Bromochloromethane 74-97-5 EPA8260B 0.27 3 NE 0.27 0.27 Chloroform 67-66-3 EPA8260B 0.25 5 70 0.4 0.25 1,1,1-Trichloroethane 71-55-6 EPA8260B 0.19 1 200 0.19 0.19 Carbon Tetrachloride 56-23-5 EPA8260B 0.22 1 0.3 0.22 0.22 Benzene 71-43-2 EPA8260B 0.24 1 1 0.24 0.24 1,2-Dichloroethane 107-06-2 EPA8260B 0.27 1 0.4 0.27 0.27 Trichloroethene 79-01-6 EPA8260B 0.23 1 3 0.23 0.23 1,2-Dichloropropane 78-87-5 EPA8260B 0.21 1 0.6 0.21 0.21 Bromodichloromethane 75-27-4 EPA8260B 0.21 1 0.6 0.21 0.21 Cis-1,3-Dichloropropene 10061-01-5 EPA8260B 0.24 1 1 0.24 0.24 4-Methyl-2-Pentanone 108-10-1 EPA8260B 1.19 100 560* 1.19 1.19 Toluene 108-88-3 EPA8260B 0.23 1 600 7.3 0.23 trans-1,3-Dichloropropene 10061-02-6 EPA8260B 0.28 1 0.4 0.28 0.28 1,1,2-Trichloroethane 79-00-5 EPA8260B 0.25 1 0.6* 0.25 0.25 Tetrachloroethene 127-18-4 EPA8260B 0.17 1 0.7 0.17 0.17 2-Hexanone 591-78-6 EPA8260B 1.57 50 40* 1.57 1.57 Dibromochloromethane 124-48-1 EPA8260B 0.24 3 0.4 0.24 0.24 1,2-Dibromoethane 106-93-4 EPA8260B 0.26 1 0.2 0.26 0.26 Chlorobenzene 108-90-7 EPA8260B 0.3 3 50 0.3 0.3 1,1,1,2-Tetrachloroethane 630-20-6 EPA8260B 0.22 5 NE 0.22 0.22 Ethylbenzene 100-41-4 EPA8260B 0.21 1 600 0.21 0.21 Xylenes 1330-20-7 EPA8260B 0.68 5 500 0.68 0.68 Dibromomethane 74-95-3 EPA8260B 0.28 10 70 0.28 0.28 Styrene 100-42-5 EPA8260B 0.19 1 70 0.19 0.19 Bromoform 75-25-2 EPA8260B 0.2 3 4 0.2 0.2 1,1,2,2-Tetrachloroethane 79-34-5 EPA8260B 0.26 3 0.2 0.26 0.26 1,2,3-Trichloropropane 96-18-4 EPA8260B 0.43 1 0.005 0.43 0.43 1,4-Dichlorobenzene 106-46-7 EPA8260B 0.39 1 6 0.39 0.39 1,2-Dichlorobenzene 95-50-1 EPA8260B 0.32 5 20 0.32 0.32 1,2-Dibromo-3-Chloropropane 96-12-8 EPA8260B 0.34 13 0.04 0.34 0.34 Acrylonitrile 107-13-1 EPA8260B 2.72 200 NE 2.72 2.72 trans-1,4-Dichloro-2-Butene 110-57-6 EPA8260B 0.42 100 NE 0.42 0.42 Tetrahydrofuran 109-99-9 EPA8260B 0.39 1 NE 0.39 0.39 Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 Gold Hill Road CDLF 7/25/2013 Page 1 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 5.4 6.6 6.6 6.5 6.3 6.3 5.3 40000 114000 101000 124000 26000 78000 3000 --- U --- U 5000 U 5000 U 5000 U 5000 U 5000 U 76000 157000 260000 165000 99000 208000 55000 10500 J 10500 J 16800 J 11700 J 26400 J 25200 J 23300 J --- J 0.04 J 0.14 U 0.14 U 0.39 J 0.07 J 0.05 J 1.1 J 5 J 5.1 J 0.1 U 0.55 J 0.9 J 0.13 U 48.9 J 293 180 7.4 J 7.8 J 14.7 J 5.9 J 0.3 J 2 2 0.02 U 0.21 J 0.48 J 0.2 J 0.6 J 1 1 3 0.23 J 0.64 J 0.21 J 7.7 J 16 14 2.7 J 2.4 J 4.9 J 1.4 J 27 85 63 4 J 8.6 J 20 11 3.7 J 18 12 0.04 U 0.57 J 1.6 J 0.7 J 22575 217800 107500 722 1659 6295 1588 1192 23122 5826 379 197 624 81 9.2 J 36 28 0.21 J 0.88 J 3.1 J 0.64 J --- U --- U 0.05 U 0.05 U 0.05 U 0.04 J 0.03 U 5.9 J 17.2 J 13.6 J 0.96 J 4.5 J 7.3 J 4.5 J 0.4 J 2.8 J 1.4 J 0.2 U 0.2 U 0.27 J 0.17 U 0.1 J 0.5 J 0.18 J 0.02 U 0.02 U 0.1 U 0.1 U --- U 0.2 J 0.22 J 0.02 U 0.03 J 0.08 J 0.1 J 9.7 J 32 31 1.2 J 2 J 5 J 2.1 J 66 410 234 8 J 26 43 29 140 2800 1900 8.9 40 100 36 94 286 227 281 94 205 50 14 15 15 17 17 16 14 19.16 22.42 22.45 27.13 21.59 26.13 23.17 32.29 32.29 32.29 32.29 32.29 32.29 32.29 --- U --- U 0.77 U 0.77 U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U 0.48 U 0.48 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.64 U 0.64 U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 2.21 U 2.21 U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL 3/29/2010 9/29/2010 3/29/2011 9/21/2011 3/21/2012 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 Table 2 9/11/2012 3/19/2013 xxxx2013 M10A Gold Hill Road CDLF 7/25/2013 Page 2 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 6.2 6.1 6.3 6.4 6.6 6.5 6.5 74000 116000 81000 109000 80000 114000 112000 10000 10000 10000 10000 5000 9000 8000 244000 285000 223000 248000 188000 420000 334000 9500 J 148600 J 42000 J 32000 J 24000 J 37800 J 53100 J 0.5 J 0.3 J 0.59 J 0.39 J 0.4 J 0.22 J 0.25 J 1.7 J 1 J 0.87 J 3 J 0.69 J 2.3 J 1 J 51.1 J 15.5 J 10.8 J 35.2 J 8.3 J 92 J 13 J 0.5 J 0.2 J 0.09 J 0.51 J 0.07 J 1 0.17 J 0.2 J 0.1 3 0.63 J 0.05 J 1 0.35 J 4 J 1.9 J 1.1 J 3 J 0.78 J 5.8 J 1.4 J 12 5.2 J 4.4 J 17 3.1 J 22 5.2 J 6 J 2.3 J 2.4 J 8.1 J 1.7 J 13 2.7 J 12790 2685 3845 10320 2434 35520 5175 138 79 19 J 133 15 J 332 15 J 9.1 J 2.1 J 1.8 J 10 1.3 J 23 2.4 J --- U --- U 0.05 U 0.05 U 0.05 U 0.07 J 0.03 U 2.8 J 4.2 J 1.6 J 5.5 J 1.1 J 7 J 2.2 J --- U 0.5 U 0.2 U 0.5 J 0.2 U 0.52 J 0.17 U 0.2 J 0.1 U 0.02 U 0.07 J 0.02 U 0.14 J 0.1 U --- U 0.2 U 0.02 U 0.05 J 0.02 U 0.25 J 0.07 U 13.9 J 9.1 J 6.1 J 20.8 J 4.4 J 28 7.5 J 24 J 5.7 J 6.7 J 28 4.9 J 71 11 220 650 110 360 45 250 65 235 398 282 321 229 287 346 15 16 15 24 18 17 16 14.44 30.36 25.32 31.76 9.09 31.2 27.63 36.78 36.78 36.78 36.78 36.78 36.78 36.78 --- U --- U 0.77 U 0.77 U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U 0.48 U 0.48 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.64 U 0.64 U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 2.21 U 2.21 U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 3/29/2011 9/21/2011 3/21/2012 9/11/20123/29/2010 9/29/2010 3/19/2013 xxxx2013 MW1 Background Gold Hill Road CDLF 7/25/2013 Page 3 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 6.5 6.7 6.1 6.6 6.9 7 5.9 193000 228000 111000 138000 218000 141000 56000 --- U 5000 7000 11000 9000 6000 8000 221000 303000 256000 172000 217000 188000 91000 13900 J 9500 J 9700 J 8500 J 11000 J 7600 J 10200 J --- U --- U 0.14 U 0.14 U 0.2 J 0.07 J 0.02 U 11 J 5.4 J 12 0.32 J 0.5 J 0.25 J 1.3 J 62.1 J 93.3 J 125 20.2 J 13 J 11.6 J 28 J 3 1 3 0.08 J 0.02 U 0.07 U 0.26 J 3 1 4 0.25 J 0.21 J 0.1 J 0.31 J 3.1 J 1.9 J 3.2 J 0.15 J 0.12 J 0.1 J 0.41 J 14 8.5 J 17 0.17 J 0.95 J 0.6 J 2.5 J 5.3 J 3.9 J 7.9 J 0.04 U 0.04 U 0.18 U 0.79 J 28675 17050 234750 459 129 J 115 J 3077 2669 3673 3078 1203 772 420 1482 40 22 47 0.85 J 0.31 J 0.21 J 4.4 J --- U --- U 0.05 U 0.05 U 0.05 U 0.04 J 0.03 U 2.1 J 2.8 J 3.2 J 0.31 J 0.67 J 1 J 1.4 J 8.7 J 3.4 J 10 0.2 U 0.2 U 0.17 U 0.49 J 0.5 J 0.3 J 0.56 J 0.02 U 0.02 U 0.1 U 0.1 U --- U --- U 0.18 J 0.02 U 0.02 U 0.19 J 0.07 U 9.7 J 8 J 13 J 0.81 J 0.31 J 0.28 J 1.7 J 56 42 106 3.5 J 2.9 J 2.3 J 9.8 J 500 1200 1500 14 6.7 --- U 80 357 559 269 317 350 520 150 14 16 14 17 16 16 14 11.36 13.26 12.22 14.59 12.16 13.23 12.36 27.5 27.5 27.5 27.5 27.5 27.5 27.5 --- U 0.9 J 0.77 U 0.77 U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U 0.48 U 0.48 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.64 U 0.64 U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 2.21 U 2.21 U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 3/21/2012 9/11/2012 3/19/2013 xxxx20133/29/2010 9/29/2010 3/29/2011 9/21/2011 MW15 Gold Hill Road CDLF 7/25/2013 Page 4 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 5.1 5.6 5.7 5.9 6.5 6 6.2 38000 43000 64000 53000 63000 114000 77000 5000 6000 10000 5000 9000 12000 12000 131000 141000 135000 94000 142000 236000 120000 11300 J 6700 J 5000 U 5000 U 6400 J 5000 U 10400 J 0.22 J --- U 0.14 U 0.14 U 0.14 U 0.08 J 0.02 U 2.8 J 1.9 J 2.3 J 0.1 U 0.42 J 2.5 J 0.72 J 122 71.5 J 105 9.2 J 12.3 J 37.9 J 28.4 J 2 0.9 J 1 0.02 U 0.02 U 0.35 J 0.07 J 2 0.5 J 0.94 J 0.13 J 0.12 J 0.2 J 0.12 J 2.7 J 2.4 J 3.7 J 0.3 J 0.73 J 3.9 J 1.8 J 9.7 J 7 J 9.8 J 0.02 U 0.77 J 4.5 J 1.1 J 5.6 J 3 J 4.2 J 0.04 U 0.04 U 3.5 J 0.38 J 43950 14920 49000 388 434 8935 2543 2740 1218 1760 821 1237 2414 2800 21 13 19 0.19 J 0.24 J 3.7 J 0.84 J --- U --- U 0.05 U 0.05 U 0.05 U 0.03 J 0.03 U 2.9 J 3 J 3 J 0.04 U 0.88 J 3.2 J 1.8 J 2.8 J 1.2 J 2.2 J 0.2 U 0.2 U 0.62 J 0.2 J 0.4 J 0.1 J 0.13 J 0.02 U 0.02 U 0.1 U 0.1 U --- U 0.1 J 0.18 J 0.02 U 0.02 U 0.07 U 0.07 U 11.5 J 9.7 J 11.9 J 0.88 J 0.53 J 10.1 J 1.4 J 107 69 114 2.7 J 2.9 J 7.7 J 4.2 J 1900 1400 3400 5.6 5.7 120 22 125 127 182 170 253 195 259 15 17 14 17 17 17 15 18.49 20.41 19.99 23.12 19.96 20.58 19.96 27.55 27.55 27.55 27.55 27.55 27.55 27.55 --- U 0.9 J 0.77 U 0.77 U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U 0.48 U 0.48 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.64 U 0.64 U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 2.21 U 2.21 U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U 7.3 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 3/29/2010 9/29/2010 3/29/2011 9/21/2011 3/21/2012 9/11/2012 3/19/2013 xxxx2013 MW16 Gold Hill Road CDLF 7/25/2013 Page 5 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 5.4 6.3 6 5.9 6.4 6.2 6.3 28000 83000 106000 64000 52000 83000 88000 --- U --- 7000 5000 U 5000 8000 7000 90000 133000 145000 87000 79000 120000 142000 --- U --- U 6800 J 5000 J 6500 J 5000 U 5000 U --- U --- U 0.14 U 0.38 J 0.14 U 0.02 J 0.02 U 1.3 J 1.4 J 1.5 J 0.1 U 0.1 U 0.13 U 0.13 U 158 120 110 5.6 J 4.8 J 7.2 J 5.1 J 0.7 J 0.7 J 0.51 J 0.02 U 0.02 U 0.07 U 0.07 U 2 3 2 0.49 J 0.14 J 0.22 J 0.05 J 6.2 J 6.8 J 7.2 J 0.24 J 0.05 J 0.11 J 0.07 J 11 11 12 0.21 J 0.39 J 0.69 J 0.44 J 3.6 J 2.4 J 3.2 J 0.04 U 0.04 U 0.18 U 0.18 U 36350 28890 29150 560 205 J 223 J 130 J 6636 6817 5039 174 38 J 360 59 21 20 19 0.46 J 0.16 J 0.17 J 0.12 J --- U --- U 0.05 U 0.08 J 0.05 U 0.02 U 0.03 U 4.4 J 4.4 J 4.5 J 0.04 U 0.23 J 0.96 J 0.74 J 2.4 J 2.6 J 3.3 J 0.2 U 0.2 U 0.17 U 0.17 U 0.3 J 0.4 J 0.22 J 0.02 U 0.02 U 0.1 U 0.1 U 0.1 J 0.1 J 0.17 J 0.02 U 0.02 U 0.07 U 0.07 U 9.3 J 8.6 J 8.8 J 0.63 J 0.32 J 0.34 J 0.44 J 139 122 110 4.1 J 2.3 J 3.1 J 3.2 J 1000 1600 2000 9 6.8 5.5 4 97 158 191 139 122 183 185 15 15 15 16 17 16 15 16.8 20.43 19.46 21.92 18.93 20.55 19.54 32.24 32.24 32.24 32.74 32.74 32.74 32.74 --- U --- U 0.77 U 0.77 U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U 0.48 U 0.48 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.64 U 0.64 U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 2.21 U 2.21 U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 3/29/2010 9/29/2010 3/29/2011 9/21/2011 3/21/2012 9/11/2012 3/19/2013 xxxx2013 MW17 Gold Hill Road CDLF 7/25/2013 Page 6 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 6.3 6 5.6 5.4 6.3 5.5 5.7 31000 34000 28000 38000 30000 38000 34000 5000 5500 5000 5000 5000 7000 6000 325000 98000 133000 78000 165000 157000 112000 18700 J --- U 6100 J 5000 U 5000 U 5400 J 6300 J --- U --- U 0.14 U 0.14 U 0.14 U 0.04 J 0.02 U 9.6 J 3.9 J 3.2 J 0.1 U 0.66 J 0.8 J 0.21 J 109 118 113 7.5 J 13.7 J 13.9 J 9.2 J 14 4 3 0.17 J 0.14 J 0.35 J 0.12 J 24 4 3 0.2 J 0.11 J 0.29 J 0.34 J 5.2 J 4.5 J 4.4 J 0.68 J 0.3 J 1 J 0.22 J 16 19 21 0.4 J 1.9 J 4.4 J 1.3 J 2.7 J 2.2 J 2.9 J 0.04 U 1.1 J 2.1 J 0.35 J 228000 67300 19575 674 2088 4606 1221 2914 1967 608 207 45 J 276 50 21 24 21 0.82 J 1 J 2.6 J 0.64 J --- U --- U 0.05 U 0.06 J 0.05 U 0.04 J 0.03 U 2.2 J 2.8 J 2.5 J 0.04 U 0.67 J 1.6 J 0.62 J 42 J 8.8 J 9.3 J 0.3 J 0.2 U 0.59 J 0.17 U 2.2 J 0.5 J 0.29 J 0.02 U 0.02 U 0.14 J 0.1 U --- U 0.1 J 0.14 J 0.02 U 0.02 U 0.07 U 0.07 U 10.1 J 10.4 J 10.9 J 1.1 J 3.8 J 6.5 J 1.7 J 506 201 145 4.2 J 5.3 J 8.5 J 5.2 J 7300 1800 2600 8.3 50 100 25 91 95 92 110 97 122 91 14 16 14 16 16 16 14 9.08 11.49 10.27 13.58 9.9 11.43 9.92 27.29 27.29 27.29 27.29 27.29 27.29 27.29 --- U 1 J 0.77 U 0.77 U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U 0.48 U 0.48 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U 2.3 J 0.64 U 0.64 U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 2.21 U 2.21 U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 3/21/2012 9/11/2012 3/19/2013 xxxx20133/29/2010 9/29/2010 3/29/2011 9/21/2011 MW18 Gold Hill Road CDLF 7/25/2013 Page 7 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 6 6.4 6.2 6.3 6.6 6.2 6.5 56000 49000 66000 74000 71000 64000 78000 4000 --- U 5000 U 5000 U 5000 U 12000 5000 U 280000 224000 220000 168000 191000 162000 154000 104700 J 90000 51200 J 34100 J 37900 J 23500 J 25500 J --- U --- U 0.14 U 0.14 U 0.14 U 0.04 J 0.02 U 2.2 J 5.3 J 2.2 J 0.19 J 0.29 J 0.13 U 0.13 U 106 108 66.6 J 12.5 J 6.2 J 8.9 J 7.1 J 0.8 J 1 0.57 J 0.02 U 0.02 U 0.07 U 0.07 U 0.7 J 1 0.36 J 0.17 J 0.14 J 0.13 J 0.06 J 4.5 J 4.7 J 4.3 J 0.03 U 0.03 U 0.03 J 0.02 J 15 17 16 0.08 J 0.65 J 0.77 J 0.48 J 7.6 J 8.1 J 6.1 J 0.04 U 0.16 J 0.23 J 0.2 J 55075 51600 3638 100 J 346 137 J 15.9 U 2340 2287 296 7 J 11 J 6 J 1.5 J 13 25 11 0.02 U 0.29 J 0.08 U 0.08 U --- U --- U 0.05 U 0.05 U 0.05 U 0.02 U 0.03 U 4.8 J 5.9 J 3.9 J 0.04 U 0.18 J 0.72 J 0.47 J 2.3 J 3.2 J 1.2 J 0.51 J 0.2 U 0.17 U 0.23 J 0.2 J 0.3 J 0.09 J 0.02 U 0.02 U 0.1 U 0.1 U --- U 0.1 J 0.07 J 0.02 U 0.02 U 0.07 U 0.21 J 13.9 J 17 J 12.8 J 1.1 J 0.79 J 0.67 J 0.67 J 189 345 156 2.9 J 3.1 J 7.9 J 2.2 J 1900 1700 750 1.6 5.7 3.2 6.7 354 351 280 262 233 202 236 15 16 15 18 17 18 15 16.58 20.74 18 20.82 15.36 20.42 17.86 37.29 37.29 37.29 37.28 37.28 37.28 37.28 --- U --- U 0.77 U 0.77 U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U 0.48 U 0.48 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U 2.3 J 0.64 U 0.64 U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 2.21 U 2.21 U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 3/29/2010 9/29/2010 3/29/2011 9/21/2011 3/21/2012 9/11/2012 3/19/2013 xxxx2013 MW19 Gold Hill Road CDLF 7/25/2013 Page 8 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 4.8 5.8 5.3 5.5 6 5.7 5.7 --- U 7000 9000 13000 6000 13000 13000 13000 --- U 5000 U 5000 U 5000 U 5000 5000 U 43000 44000 41000 54000 40000 45000 125000 7 J --- U 5000 U 5000 U 10200 J 5000 U 5000 U --- U --- U 0.14 U 0.14 U 0.14 U 0.03 J 0.02 U 0.3 J --- U 0.3 J 0.85 J 0.19 J 0.13 U 0.13 U 37 J 22.4 J 35.5 J 71.3 J 9.4 J 24.1 J 6.1 J 0.3 J 0.2 J 0.23 J 0.48 J 0.09 J 0.15 J 0.07 U --- U 0.1 J 0.08 J 0.19 J 0.02 U 0.17 J 0.08 J 2.6 J 1 J 1.9 J 3.4 J 0.19 J 1.1 J 0.05 J 7.5 J 3.5 J 8 J 14 0.49 J 6.2 J 0.56 J 3.8 J 2 J 4 J 8.2 J 0.67 J 3 J 1 J 8900 4200 6465 22675 220 J 5995 110 J 162 71 103 300 11 J 97 4.1 J 1.9 J 0.8 J 1.7 J 3.6 J 0.08 J 1.2 J 0.08 J --- U --- U 0.05 U 0.05 U 0.05 U 0.02 J 0.03 U 2 J 2.3 J 2.2 J 3.6 J 0.62 J 3.6 J 1.2 J --- U --- U 0.2 U 0.2 U 0.2 U 0.17 U 0.17 U --- U --- U 0.02 U 0.02 U 0.02 U 0.1 U 0.1 U --- U --- U 0.07 J 0.04 J 0.02 U 0.08 J 0.07 U 13.3 J 8.3 J 14.4 J 26 0.55 J 7.2 J 0.51 J 26 12 20 42 3.5 J 18 4 J 190 240 370 250 4.9 8.3 3.6 41 38 40 42 24 51 50 16 16 15 17 18 16 15 19.22 28.04 25.11 30.5 24.02 29.32 25.26 32.99 32.99 32.99 32.99 32.99 32.99 32.99 --- U --- U 0.77 U 0.77 U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U 0.48 U 0.48 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.64 U 0.64 U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 2.21 U 2.21 U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 3/29/2010 9/29/2010 3/29/2011 9/21/2011 3/21/2012 9/11/2012 3/19/2013 xxxx2013 MW4 Gold Hill Road CDLF 7/25/2013 Page 9 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 5.2 6.4 5.5 5.8 6.2 5.9 5.5 8 30000 20000 34000 20000 36000 21000 --- U 13000 7000 5000 U 5000 U 5000 U 5000 54000 91000 76000 68000 70000 80000 24000 --- U 5100 J 5000 U 6300 J 12000 J 9600 J 9400 J --- U 0.6 J 0.14 U 0.14 U 0.14 U 0.05 J 0.02 U 5.1 J 9.5 J 6.3 J 0.1 U 0.1 U 0.24 J 0.13 U 363 763 619 15.9 J 13.3 J 17.8 J 19.7 J 5 9 7 0.15 J 0.15 J 0.17 J 0.23 J 1 2 2 0.6 J 0.05 J 0.08 J 0.09 J 5.9 J 7.1 J 8.5 J 0.41 J 0.05 J 0.44 J 0.46 J 19 22 28 1.2 J 0.53 J 2.2 J 2.2 J 10 13 15 0.75 J 0.1 J 0.87 J 0.89 J 117625 166700 190250 2462 171 J 1930 2432 3421 6416 4359 68 7 J 62 50 32 54 52 0.88 J 0.1 J 0.94 J 0.94 J 0.51 J 0.9 0.38 0.05 U 0.05 U 0.09 J 0.03 U 2.5 J 93 J 4.1 J 0.04 U 0.35 J 1.2 J 0.93 J 1.8 J 3.3 J 4.4 J 0.2 U 0.2 U 0.17 U 0.17 U 0.3 J 1 J 0.59 J 0.02 U 0.02 U 0.1 U 0.1 U 0.1 J 0.3 J 0.45 J 0.02 U 0.02 U 0.14 J 0.07 U 22.5 29 33 2.6 J 0.49 J 2.2 J 2.4 J 336 719 605 11 6.1 J 14 16 2600 13600 4400 29 5.6 40 45 71 75 83 85 63 98 61 14 15 13 16 16 16 14 11.67 17.57 14.44 17.69 13.56 17.32 14.61 25.03 25.03 25.03 25.03 25.03 25.03 25.03 --- U --- U 0.77 U 0.77 U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U 0.48 U 0.48 U --- U 1 0.24 U 0.6 J 0.24 U 0.4 J 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.64 U 0.64 U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 2.21 U 2.21 U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 3/29/2010 9/29/2010 3/29/2011 9/21/2011 3/21/2012 9/11/2012 3/19/2013 xxxx2013 MW8 Gold Hill Road CDLF 7/25/2013 Page 10 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 5.7 6.6 6 Missing 6.5 Missing 6.4 --- U --- U 0.14 U Missing 0.14 U Missing 0.04 J 0.8 J 5.4 J 1.1 J Missing 2.2 J Missing 2.3 J 38.9 J 113 J 32.2 J Missing 58.8 J Missing 54.8 J 0.1 J 0.7 U 0.14 J Missing 0.1 J Missing 0.12 J 2.7 J 3.3 J 1.8 J Missing 3.7 J Missing 3 J 3.8 J 12 4.5 J Missing 9.6 J Missing 7.4 J 2.4 J 13 3.7 J Missing 9.6 J Missing 5.6 J 3.4 J 22 2.7 J Missing 9.2 J Missing 6 J --- U --- U 0.05 U Missing 0.05 U Missing 0.03 U 1.1 J 6.1 J 1 J Missing 2.7 J Missing 2.4 J --- U 1.2 J 0.23 J Missing 0.2 U Missing 0.3 J --- U 0.1 J 0.02 U Missing 0.02 U Missing 0.1 U --- U 0.1 J 0.04 J Missing 0.08 J Missing 0.07 U 5.8 J 36 10.5 J Missing 23.5 J Missing 13.8 J 9.1 J 47 8.3 J Missing 19 Missing 16 144 81 119 Missing 143 Missing 173 13 19 8 Missing 17 Missing 9 --- U --- U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U --- U --- U 0.24 U 0.24 U 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U --- U --- U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U --- U --- U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 3/29/2011 9/21/2011 3/21/2012 9/11/2012 3/19/2013 xxxx20133/29/2010 9/29/2010 SW1 Gold Hill Road CDLF 7/25/2013 Page 11 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 5.8 NM 6.8 Missing 6.7 6.9 6.6 --- U NM 0.29 J Missing 0.4 J 0.44 J 0.1 J 0.4 J NM 0.43 J Missing 0.86 J 0.78 J 0.6 J 28.9 J NM 19.1 J Missing 20.4 J 18.2 J 17.3 J --- U NM 0.12 J Missing 0.04 J 0.04 J 0.05 J 1.2 J NM 0.2 J Missing 0.34 J 0.44 J 0.27 J 3.4 J NM 3.2 J Missing 6.9 J 5.9 J 3.5 J 1.5 J NM 0.7 J Missing 0.96 J 1.5 J 1 J 1.2 J NM 0.6 J Missing 1.7 J 2.4 J 1.6 J --- U NM 0.05 U Missing 0.05 U 0.02 U 0.03 U 1.1 J NM 0.39 J Missing 1 J 1.2 J 0.8 J --- U NM 0.2 U Missing 0.2 U 0.17 U 0.17 U 0.1 J NM 0.02 U Missing 0.02 U 0.1 U 0.1 U --- U NM 0.02 U Missing 0.02 U 0.07 U 0.07 U 3.2 J NM 0.99 J Missing 2.4 J 2.7 J 2.3 J 5.8 J NM 6.6 J Missing 12 12 10 74 NM 160 Missing 122 98 109 12 NM 7 Missing 18 16 8 NM NM NM 0.77 U 0.77 U 0.77 U 0.77 U NM NM NM 0.63 U 0.63 U 0.63 U 0.63 U NM NM NM 0.67 U 0.67 U 0.67 U 0.67 U NM NM NM 0.48 U 0.48 U 0.48 U 0.48 U NM NM NM 0.24 U 0.24 U 0.24 U 0.24 U NM NM NM 0.17 U 0.17 U 0.17 U 0.17 U NM NM NM 9.06 U 9.06 U 9.06 U 9.06 U NM NM NM 0.26 U 0.26 U 0.26 U 0.26 U NM NM NM 0.23 U 0.23 U 0.23 U 0.23 U NM NM NM 0.64 U 0.64 U 0.64 U 0.64 U NM NM NM 0.23 U 0.23 U 0.23 U 0.23 U NM NM NM 0.20 U 0.20 U 0.20 U 0.20 U NM NM NM 0.20 U 0.20 U 0.20 U 0.20 U NM NM NM 0.25 U 0.25 U 0.25 U 0.25 U NM NM NM 2.21 U 2.21 U 2.21 U 2.21 U NM NM NM 0.27 U 0.27 U 0.27 U 0.27 U NM NM NM 0.25 U 0.25 U 0.25 U 0.25 U NM NM NM 0.19 U 0.19 U 0.19 U 0.19 U NM NM NM 0.22 U 0.22 U 0.22 U 0.22 U NM NM NM 0.24 U 0.24 U 0.24 U 0.24 U NM NM NM 0.27 U 0.27 U 0.27 U 0.27 U NM NM NM 0.23 U 0.23 U 0.23 U 0.23 U NM NM NM 0.21 U 0.21 U 0.21 U 0.21 U NM NM NM 0.21 U 0.21 U 0.21 U 0.21 U NM NM NM 0.24 U 0.24 U 0.24 U 0.24 U NM NM NM 1.19 U 1.19 U 1.19 U 1.19 U NM NM NM 0.23 U 0.23 U 0.23 U 0.23 U NM NM NM 0.28 U 0.28 U 0.28 U 0.28 U NM NM NM 0.25 U 0.25 U 0.25 U 0.25 U NM NM NM 0.17 U 0.17 U 0.17 U 0.17 U NM NM NM 1.57 U 1.57 U 1.57 U 1.57 U NM NM NM 0.24 U 0.24 U 0.24 U 0.24 U NM NM NM 0.26 U 0.26 U 0.26 U 0.26 U NM NM NM 0.3 U 0.3 U 0.3 U 0.3 U NM NM NM 0.22 U 0.22 U 0.22 U 0.22 U NM NM NM 0.21 U 0.21 U 0.21 U 0.21 U NM NM NM 0.68 U 0.68 U 0.68 U 0.68 U NM NM NM 0.28 U 0.28 U 0.28 U 0.28 U NM NM NM 0.19 U 0.19 U 0.19 U 0.19 U NM NM NM 0.2 U 0.2 U 0.2 U 0.2 U NM NM NM 0.26 U 0.26 U 0.26 U 0.26 U NM NM NM 0.43 U 0.43 U 0.43 U 0.43 U NM NM NM 0.39 U 0.39 U 0.39 U 0.39 U NM NM NM 0.32 U 0.32 U 0.32 U 0.32 U NM NM NM 0.34 U 0.34 U 0.34 U 0.34 U NM NM NM 2.72 U 2.72 U 2.72 U 2.72 U NM NM NM 0.42 U 0.42 U 0.42 U 0.42 U NM NM NM 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 3/19/2013 xxxx20133/29/2010 9/29/2010 3/29/2011 9/21/2011 SW2 3/21/2012 9/11/2012 Gold Hill Road CDLF 7/25/2013 Page 12 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL 6.7 6.9 6.7 NM 7 7.3 6.9 --- U 0.8 J 0.14 U NM 0.14 U 0.03 J 0.02 U 0.4 J 3.6 J 0.6 J NM 0.74 J 0.54 J 0.35 J 37.3 J 88.5 J 27.3 J NM 30.9 J 22.6 J 22 J 0.2 J 0.2 J 0.06 J NM 0.04 J 0.06 J 0.08 J 0.8 J 4.8 J 0.92 J NM 0.91 J 0.28 J 0.32 J 5.3 J 16 3 J NM 3.4 J 1.9 J 2.6 J 2 J 7.4 J 1.5 J NM 1.5 J 0.36 J 1 J 2.3 J 9.6 J 1.3 J NM 1.5 J 0.35 J 0.83 J --- U --- 0.05 U NM 0.05 U 0.02 U 0.03 U 1.3 J 5.7 J 1.1 J NM 1.3 J 2.2 J 1.2 J --- U 0.9 J 0.38 J NM 0.2 U 0.34 J 0.17 U 0.1 J 0.1 J 0.02 U NM 0.02 U 0.1 U 0.1 U --- U --- U 0.13 J NM 0.02 U 0.07 U 0.07 U 4.5 J 17.7 J 3.2 J NM 3.8 J 1.2 J 2.5 J 14 87 8.8 J NM 10 4.3 J 5.7 J 159 300 222 NM 219 208 193 13 19 9 NM 17 18 9 --- U 0.9 J 0.77 U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U 0.48 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.64 U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 2.4 J --- U 2.21 U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Permit #7606-CDLF-2001 Ground and Surface Water Monitoring Data Table 2 3/19/2013 xxxx20133/29/2010 9/29/2010 3/29/2011 9/21/2011 3/21/2012 9/11/2012 SW3 Background Gold Hill Road CDLF 7/25/2013 Page 13 of 14 Sampling Point: Sample Date: PH (field measurement) Total Alkalinity Chloride Total Dissolved Residue Sulfate Antimony Arsenic Barium Beryllium Cadmium Cobalt Copper Total Chromium Iron Manganese Lead Mercury Nickel Selenium Silver Thallium Vanadium Zinc Turbidity Conductivity uMho/cm (at 25c) Temperature Static Water Level Well Depth Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane 1,1-Dichloroethene Acetone Iodomethane Carbon Disulfide Methylene Chloride trans-1,2-Dichloroethene 1,1-Dichloroethane Vinyl Acetate Cis-1,2-Dichloroethene 2-Butanone Bromochloromethane Chloroform 1,1,1-Trichloroethane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene 1,2-Dichloropropane Bromodichloromethane Cis-1,3-Dichloropropene 4-Methyl-2-Pentanone Toluene trans-1,3-Dichloropropene 1,1,2-Trichloroethane Tetrachloroethene 2-Hexanone Dibromochloromethane 1,2-Dibromoethane Chlorobenzene 1,1,1,2-Tetrachloroethane Ethylbenzene Xylenes Dibromomethane Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,2,3-Trichloropropane 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane Acrylonitrile trans-1,4-Dichloro-2-Butene Tetrahydrofuran Color key: Exceeds SWSL but not 2L Exceeds 2L but not SWSL Detected below SWSL Exceeds 2L and SWSL NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM --- U --- U 0.77 U 0.77 U 0.77 U 0.77 U 0.77 U --- U --- U 0.63 U 0.63 U 0.63 U 0.63 U 0.63 U --- U --- U 0.67 U 0.67 U 0.67 U 0.67 U 0.67 U --- U --- U 0.48 U 0.48 U 0.48 U 0.48 U 0.48 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 9.06 U 9.06 U 9.06 U 9.06 U 9.06 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.64 U 0.64 U 0.64 U 0.64 U 0.64 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.20 U 0.20 U 0.20 U 0.20 U 0.20 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 2.21 U 2.21 U 2.21 U 2.21 U 2.21 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.27 U 0.27 U 0.27 U 0.27 U 0.27 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 1.19 U 1.19 U 1.19 U 1.19 U 1.19 U --- U --- U 0.23 U 0.23 U 0.23 U 0.23 U 0.23 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.25 U 0.25 U 0.25 U 0.25 U 0.25 U --- U --- U 0.17 U 0.17 U 0.17 U 0.17 U 0.17 U --- U --- U 1.57 U 1.57 U 1.57 U 1.57 U 1.57 U --- U --- U 0.24 U 0.24 U 0.24 U 0.24 U 0.24 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U --- U --- U 0.22 U 0.22 U 0.22 U 0.22 U 0.22 U --- U --- U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U --- U --- U 0.68 U 0.68 U 0.68 U 0.68 U 0.68 U --- U --- U 0.28 U 0.28 U 0.28 U 0.28 U 0.28 U --- U --- U 0.19 U 0.19 U 0.19 U 0.19 U 0.19 U --- U --- U 0.2 U 0.2 U 0.2 U 0.2 U 0.2 U --- U --- U 0.26 U 0.26 U 0.26 U 0.26 U 0.26 U --- U --- U 0.43 U 0.43 U 0.43 U 0.43 U 0.43 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U --- U --- U 0.32 U 0.32 U 0.32 U 0.32 U 0.32 U --- U --- U 0.34 U 0.34 U 0.34 U 0.34 U 0.34 U --- U --- U 2.72 U 2.72 U 2.72 U 2.72 U 2.72 U --- U --- U 0.42 U 0.42 U 0.42 U 0.42 U 0.42 U --- U --- U 0.39 U 0.39 U 0.39 U 0.39 U 0.39 U Notes: SWSL = Solid Waste Section Limit, a laboratory reporting limit established by NCDENR 2L Std. = groundwater protection standard based on 15A NCAC 2L except as denoted by * * - denotes groundwater standard based on other criteria Laboratory results in bold exceed the higher of NCAC 2L Standard or SWSL ND = Not Detected above the Laboratory Reporting Limit NE = Not Established NM = Not Measured U = not detected above the laboratory method detection limit J = Estimated value above laboratory method detection limit and below SWSL Trip Blank 3/29/2011 9/21/2011 3/21/2012 9/11/2012 3/19/20133/29/2010 9/29/2010 Table 2 Ground and Surface Water Monitoring Data Permit #7606-CDLF-2001 Gold Hill Road CDLF 7/25/2013 Page 14 of 14 Attachment 1 – Temporal Variation by Well 1 0 50000 100000 150000 200000 250000 300000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Alk Chl TDS Sulf Fe Mn All values in ug/l MW-10A 0 500 1000 1500 2000 2500 3000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Turb All values in ug/l MW-10A 0 50 100 150 200 250 300 350 400 450 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Ba Cu Zn All values in ug/l MW-10A Attachment 1 – Temporal Variation by Well 2 0 5 10 15 20 25 30 35 40 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Pb V Cr All values in ug/l MW-10A 0 2 4 6 8 10 12 14 16 18 20 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Co As Ni Cd All values in ug/l MW-10A 0 0.5 1 1.5 2 2.5 3 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Be Hg Se Ag Tl All values in ug/l MW-10A Attachment 1 – Temporal Variation by Well 3 0 50000 100000 150000 200000 250000 300000 350000 400000 450000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Alk Chl TDS Sulf Fe Mn All values in ug/l MW-1 0 100 200 300 400 500 600 700 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Turb All values in ug/l MW-1 0 10 20 30 40 50 60 70 80 90 100 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Ba Cu Zn All values in ug/l MW-1 Attachment 1 – Temporal Variation by Well 4 0 5 10 15 20 25 30 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Pb V Cr All values in ug/l MW-1 0 1 2 3 4 5 6 7 8 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Co As Ni Cd All values in ug/l MW-1 0 0.2 0.4 0.6 0.8 1 1.2 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Be Hg Se Ag Tl All values in ug/l MW-1All values in ug/l MW-1 Attachment 1 – Temporal Variation by Well 5 0 50000 100000 150000 200000 250000 300000 350000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Alk Chl TDS Sulf Fe Mn All values in ug/l MW-15 0 200 400 600 800 1000 1200 1400 1600 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Turb All values in ug/l MW-15 0 20 40 60 80 100 120 140 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Ba Cu Zn All values in ug/l MW-15 Attachment 1 – Temporal Variation by Well 6 0 5 10 15 20 25 30 35 40 45 50 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Pb V Cr All values in ug/l MW-15 0 2 4 6 8 10 12 14 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Co As Ni Cd All values in ug/l MW-10A 0 2 4 6 8 10 12 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Be Hg Se Ag Tl All values in ug/l MW-10A Attachment 1 – Temporal Variation by Well 7 0 50000 100000 150000 200000 250000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Alk Chl TDS Sulf Fe Mn All values in ug/l MW-16 0 2000 4000 6000 8000 10000 12000 14000 16000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Turb All values in ug/l MW-16 0 20 40 60 80 100 120 140 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Ba Cu Zn All values in ug/l MW-16 Attachment 1 – Temporal Variation by Well 8 0 5 10 15 20 25 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Pb V Cr All values in ug/l MW-16 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Co As Ni Cd All values in ug/l MW-16 0 0.5 1 1.5 2 2.5 3 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Be Hg Se Ag Tl All values in ug/l MW-16 Attachment 1 – Temporal Variation by Well 9 0 20000 40000 60000 80000 100000 120000 140000 160000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Alk Chl TDS Sulf Fe Mn All values in ug/l MW-17 0 500 1000 1500 2000 2500 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Turb All values in ug/l MW-17 0 20 40 60 80 100 120 140 160 180 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Ba Cu Zn All values in ug/l MW-17 Attachment 1 – Temporal Variation by Well 10 0 5 10 15 20 25 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Pb V Cr All values in ug/l MW-17 0 1 2 3 4 5 6 7 8 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Co As Ni Cd All values in ug/l MW-17 0 0.5 1 1.5 2 2.5 3 3.5 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Be Hg Se Ag Tl All values in ug/l MW-17 Attachment 1 – Temporal Variation by Well 11 0 50000 100000 150000 200000 250000 300000 350000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Alk Chl TDS Sulf Fe Mn All values in ug/l MW-18 0 1000 2000 3000 4000 5000 6000 7000 8000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Turb All values in ug/l MW-18 0 100 200 300 400 500 600 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Ba Cu Zn All values in ug/l MW-18 Attachment 1 – Temporal Variation by Well 12 0 5 10 15 20 25 30 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Pb V Cr All values in ug/l MW-18 0 5 10 15 20 25 30 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Co As Ni Cd All values in ug/l MW-18 0 5 10 15 20 25 30 35 40 45 1/ 1 / 1 9 0 0 1/ 2 / 1 9 0 0 1/ 3 / 1 9 0 0 1/ 4 / 1 9 0 0 1/ 5 / 1 9 0 0 1/ 6 / 1 9 0 0 1/ 7 / 1 9 0 0 Be Hg Se Ag Tl All values in ug/l MW-18All values in ug/l MW-18 Attachment 1 – Temporal Variation by Well 13 0 50000 100000 150000 200000 250000 300000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Alk Chl TDS Sulf Fe Mn All values in ug/l MW-19 0 200 400 600 800 1000 1200 1400 1600 1800 2000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Turb All values in ug/l MW-19 0 50 100 150 200 250 300 350 400 450 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Ba Cu Zn All values in ug/l MW-19 Attachment 1 – Temporal Variation by Well 14 0 5 10 15 20 25 30 35 40 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Pb V Cr All values in ug/l MW-19 0 1 2 3 4 5 6 7 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Co As Ni Cd All values in ug/l MW-19 0 0.5 1 1.5 2 2.5 3 3.5 1/ 1 / 1 9 0 0 1/ 2 / 1 9 0 0 1/ 3 / 1 9 0 0 1/ 4 / 1 9 0 0 1/ 5 / 1 9 0 0 1/ 6 / 1 9 0 0 1/ 7 / 1 9 0 0 Be Hg Se Ag Tl All values in ug/l MW-19 Attachment 1 – Temporal Variation by Well 15 0 50000 100000 150000 200000 250000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Alk Chl TDS Sulf Fe Mn All values in ug/l MW-4 0 50 100 150 200 250 300 350 400 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Turb All values in ug/l MW-4 0 10 20 30 40 50 60 70 80 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Ba Cu Zn All values in ug/l MW-4All values in ug/l MW-4 Attachment 1 – Temporal Variation by Well 16 0 5 10 15 20 25 30 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Pb V Cr All values in ug/l MW-4 0 0.5 1 1.5 2 2.5 3 3.5 4 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Co As Ni Cd All values in ug/l MW-4 0 0.1 0.2 0.3 0.4 0.5 0.6 1/ 1 / 1 9 0 0 1/ 2 / 1 9 0 0 1/ 3 / 1 9 0 0 1/ 4 / 1 9 0 0 1/ 5 / 1 9 0 0 1/ 6 / 1 9 0 0 1/ 7 / 1 9 0 0 Be Hg Se Ag Tl All values in ug/l MW-4 Attachment 1 – Temporal Variation by Well 17 0 10000 20000 30000 40000 50000 60000 70000 80000 90000 100000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Alk Chl TDS Sulf Fe Mn All values in ug/l MW-8 0 2000 4000 6000 8000 10000 12000 14000 16000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Turb All values in ug/l MW-8 0 100 200 300 400 500 600 700 800 900 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Ba Cu Zn All values in ug/l MW-8 Attachment 1 – Temporal Variation by Well 18 0 10 20 30 40 50 60 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Pb V Cr All values in ug/l MW-8 0 10 20 30 40 50 60 70 80 90 100 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Co As Ni Cd All values in ug/l MW-8 0 1 2 3 4 5 6 7 8 9 10 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 Be Hg Se Ag Tl All values in ug/l MW-8 Attachment 2 – Temporal Variation by Constituent 19 0 2000 4000 6000 8000 10000 12000 14000 16000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l TurbidityAll values in ug/l 0 2 4 6 8 10 12 14 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Arsenic 0 100 200 300 400 500 600 700 800 900 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Barium Attachment 2 – Temporal Variation by Constituent 20 0 2 4 6 8 10 12 14 16 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Cadmium 0 2 4 6 8 10 12 14 16 18 20 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l ChromiumAll values in ug/l 0 2 4 6 8 10 12 14 16 18 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Cobalt Attachment 2 – Temporal Variation by Constituent 21 0 10 20 30 40 50 60 70 80 90 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l CopperAll values in ug/l 0 10 20 30 40 50 60 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Lead 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Mercury Attachment 2 – Temporal Variation by Constituent 22 0 10 20 30 40 50 60 70 80 90 100 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l All values in ug/l Nickel 0 0.5 1 1.5 2 2.5 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Silver 0 5 10 15 20 25 30 35 40 45 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Selenium Attachment 2 – Temporal Variation by Constituent 23 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Thallium 0 5 10 15 20 25 30 35 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l VanadiumAll values in ug/l 0 100 200 300 400 500 600 700 800 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l ZincAll values in ug/l Attachment 2 – Temporal Variation by Constituent 24 0 50000 100000 150000 200000 250000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Alkalinity 0 2000 4000 6000 8000 10000 12000 14000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Chloride 0 50000 100000 150000 200000 250000 300000 350000 400000 450000 3/ 1 / 2 0 1 0 9/ 1 / 2 0 1 0 3/ 1 / 2 0 1 1 9/ 1 / 2 0 1 1 3/ 1 / 2 0 1 2 9/ 1 / 2 0 1 2 3/ 1 / 2 0 1 3 M10A MW1 MW15 MW16 MW17 MW18 MW19 MW4 MW8 All values in ug/l Total Dissolved Solids