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HomeMy WebLinkAbout6403_Nash_RevisedApplic_20161024 Facility Plan Nash County C&D Landfill and Horizontal Expansion October 2016 1100 Crescent Green Drive, Suite 208 Cary, North Carolina 27518 • O: 919-792-1900 • F: 866-311-7206 NC FIRM C-2910 This page intentionally left blank FACILITY PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION i CONTENTS 1.0 INTRODUCTION ....................................................................................................... 1  2.0 WASTE STREAM ...................................................................................................... 1  2.1 TYPES OF WASTE SPECIFIED FOR DISPOSAL ................................................ 1  2.2 AVERAGE YEARLY DISPOSAL RATE ................................................................. 2  2.3 AREA SERVED BY THE FACILITY ....................................................................... 2  2.4 PROCEDURE FOR SEGREGATED MANAGEMENT AT DIFFERENT ON- SITE FACILITIES .............................................................................................. 2  2.4.1 YARD WASTE ................................................................................................ 2  2.4.2 WHITE GOODS .............................................................................................. 3  2.4.3 TIRES .............................................................................................................. 3  2.5 EQUIPMENT REQUIREMETNS FOR OPERATION OF THE C&DLF UNIT ......... 3  3.0 LANDFILL CAPACITY ............................................................................................... 3  3.1 EXISTING PERMITTED 11.3-ACRE C&DLF ........................................................ 3  3.2 PROPOSED 15.8-ACRE HORIZONTAL EXPANSION ......................................... 4  4.0 SPECIAL ENGINEERING FEATURES ..................................................................... 5  4.1 LEACHATE MANAGEMENT SYSTEMS ............................................................... 6  4.2 CONTAINMENT AND ENVIRONMENTAL CONTROL SYSTEMS ....................... 6  4.3 BASE LINER SYSTEM .......................................................................................... 6  4.4 OTHER DEVISED, COMPONENTS, AND STRUCTURES ................................... 6  FACILITY PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 1 of 6 1.0 INTRODUCTION The purpose of this report is to present the Facility Plan for the proposed Nash County Construction & Demolition Landfill (C&DLF) and Horizontal Expansion in accordance with Rule 15A NCAC 13B .0537. Nash County satisfied the Local Government Approval requirements described in Rule 15A NCAC 13B .0536 Paragraph (c)(11) in late 2011. NCDENR issued concurrence that the Local Government Approval process was satisfied on March 2, 2012. Nash County owns and operates a 375 acre Solid Waste Management Facility (the Facility) located approximately 1-mile west of the intersection of Taylor Store Road and SR 1411 (Dukes Road) on the southern side and adjacent of SR 1411. The Facility is comprised of two distinct facilities including includes the Closed MSWLF Landfill Facility (permit 6401) and the C&DLF Facility (permit 6403) as shown on Sheet 1 of the Facility Plan Drawings. The Closed MSW Landfill Facility Boundary (permit 6401) is 188.34 acres. The C&DLF Facility Boundary (permit 6403) is 186.76 acres. The Solid Waste Management Facility provides numerous functions including, but not limited to: 1) Construction and Demolition Landfill (C&DLF) 2) Closed Municipal Solid Waste Landfill (MSWLF) 3) Yard Waste Collection 4) White Goods Collection 5) Waste Tire Collection 6) Citizen Convenience Center 2.0 WASTE STREAM Rule 15A NCAC 13B .0537(e)(1) requires a description of the proposed waste stream to be managed by the facility. 2.1 TYPES OF WASTE SPECIFIED FOR DISPOSAL The C&DLF Facility will accept the following types of wastes for Disposal: A. Construction and Demolition (C&D) Waste: "C&D solid waste" means solid waste generated solely from the construction, remodeling, repair, or demolition operations on pavement and buildings or structures. FACILITY PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 2 of 6 B. Inert Debris: “Inert Debris” is defined as solid waste which consists solely of material that is virtually inert, such as brick, concrete, rock, and clean soil. For the Nash County C&DLF, this term also includes wood pallets. C. Asphalt: In accordance with G.S. 130-294(m). D. Non Friable Asbestos: In accordance with 40 CFR 61. E. Land Clearing Debris: As defined in G.S. 130A-290, specifically solid waste which is generated solely from land-clearing activities, such as stumps, trees, etc. C&D waste does not include municipal and industrial wastes that may be generated by the on-going operations at buildings or structures. 2.2 AVERAGE YEARLY DISPOSAL RATE The Facility received approximately 5,000 tons in fiscal year 2014, which represents a reduction from recent annual tonnages reported. During the Local Government Approval process, approximately 10,000 tons of C&D were reported disposed in 2010, or approximately 27 tons per day. The FY14 tonnage is considered an isolated reduction in annual incoming tonnage. It is projected that the waste disposed will increase about 2.0% annually over the life of the facility. 2.3 AREA SERVED BY THE FACILITY The Nash County C&D Facility will serve the unincorporated and incorporated areas of Nash County which includes all or portions of municipalities of Bailey, Castalia, Dortches, Middlesex, Momeyer, Nashville, Red Oak, Rocky Mount, Sharpsburg, Spring Hope, and Whitakers. 2.4 PROCEDURE FOR SEGREGATED MANAGEMENT AT DIFFERENT ON-SITE FACILITIES 2.4.1 YARD WASTE Nash County collects yard waste in the areas indicated on Sheet 1 of the Engineering Drawings. Yard waste is stockpiled until there is a sufficient amount to hire a Contractor to grind the material. The ground material is used for various purposes around the County. The existing Yard Waste Stockpile Area will be relocated in the future to accommodate the C&D landfill expansion. The relocated Yard Waste Stockpile Area is indicated on Sheet 2 of the Engineering Drawings. FACILITY PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 3 of 6 2.4.2 WHITE GOODS Nash County collects White Goods in the area noted on Sheet 1 of the Engineering Drawings. Units requiring refrigerant removal (refrigerators, freezers, and air conditioning units) are segregated in the “refrigerant removal” section of the White Goods area. These units will be unloaded and handled in a manner to prevent damage to the appliance that may cause refrigerant leakage as described in the County’s White Goods Management Plan. After removal of refrigerant, the White Goods unit will be placed into the white goods pile. The County contracts with a private White Goods recycling vendor to collect the White Goods for transport and recycling. 2.4.3 TIRES Nash County collects waste tires in trailers in the area noted on Sheet 1 of the Facility Drawings. The County contracts with a private waste tire recycling vendor for transport and recycling and/or disposal. 2.5 EQUIPMENT REQUIREMETNS FOR OPERATION OF THE C&DLF UNIT The equipment is county-owned and includes the following, or comparable:  1 – CAT 826C Compactor  1 – KOBELCO Model SIL 250 LC Track Excavator  1 – 613 CAT Scraper  1 – 623 CAT Scraper Other equipment may be purchased or rented on an as-needed basis. 3.0 LANDFILL CAPACITY Rule 15A NCAC 13B .0537(e)(2) requires an analysis of landfill capacity and soil resources. 3.1 EXISTING PERMITTED 11.3-ACRE C&DLF Nash County currently operates an 11.3-acre C&DLF Facility (Phase 1 - 3 C&DLF) as shown on Sheet 1 of the Engineering Drawings, in accordance with permit No. 64-03 issued on April 20, 2005. The site was originally permitted in 2000 and the entire permitted base grade footprint has been constructed and has received waste. All remaining waste disposal capacity is accomplished by vertically expanding the current footprint. The 11.3-acre Nash County C&DLF had approximately 138,000 cubic yards of useable airspace (airspace below the final cover elevations) remaining as of June 18, FACILITY PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 4 of 6 2014. This capacity was calculated by using Terramodel CADD software to compute the volume between an aerial survey of the 11.3-acre Nash County C&DLF completed on June 18, 2014 and the proposed top of waste elevations. The 11.3-acre Nash County C&DLF has an Airspace Utilization Factor (AUF) of 745 lbs/CY (pounds of waste per cubic yard of airspace utilized) between January 1, 2000 and June 18, 2014. The AUF was computed by dividing the pounds of waste disposed from scalehouse records by the airspace utilized by this waste as calculated by using Terramodel CADD software to compute the volume between the base grade elevations of the 11.3-acre Nash County C&DLF and an aerial survey of Facility complete on June 18, 2014. Assuming the 11.3-acre Nash County C&DLF will continue to operate at a 745 lbs/CY AUF, the remaining 138,000 cubic yards of useable airspace will provide 51,395 tons of waste disposal capacity. Assuming the County receives 10,000 tons of C&D in 2015 and assuming a 2% annual increase, the 11.3-acre Nash County C&DLF is expected to reach capacity in 2018. 3.2 PROPOSED 15.8-ACRE HORIZONTAL EXPANSION The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF is shown on Sheet 1 of the Engineering Drawings. The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF is estimated to provide an additional 1,620,500 cubic yards gross capacity (i.e. bottom of waste to the top of final cover elevations), or about 1,543,876 cubic yards of net airspace (i.e. bottom of waste to the top of waste elevations) beyond the previously permitted top of waste elevations of the existing 11.3-acre Nash County C&DLF (Phase 1 – 3). Assuming the proposed 15.8-acre Nash County Horizontal Expansion will continue to operate at a 745 lbs/CY AUF, the remaining 1,543,876 cubic yards net airspace will provide 575,000 tons of waste disposal capacity. Based on the assumed 10,000 tons of C&D to be disposed in 2015, and assuming a 2% annual increase, the combined 27.1-acre Nash County Construction & Demolition Landfill (C&DLF) and Horizontal Expansion is expected to reach capacity in 2053. The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF is projected to be constructed and operated in nine (9) phases with individual and cumulative capacities as shown on the Table 1 below. FACILITY PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 5 of 6 Table 1 – Phase and Capacity Analysis Phase Phase Area (Ac) Phase Remaining (as of 07/01/14) Net Disposal Capacity (CY) Phase Permitted Net Disposal Capacity (CY) Phase Permitted Gross Capacity (CY) Phase 1 – 3 11.3 130,000 731,000 785,692 Phase 4 3.7 133,356 133,356 151,071 Phase 5 2.1 96,541 96,541 106,464 Phase 6 4.6 190,101 190,101 212,511 Phase 7 2.1 88,839 88,839 98,906 Phase 8 1.8 95,290 95,290 103,809 Phase 9 1.7 939,746 939,746 947,781 Sub-total Phase 4 - 9 15.8 1,543,876 1,543,876 1,620,542 Total: Phase 1-9 27.1 1,673,876 2,274,876 2,406,234 3.3 SOIL QUANTITIES FOR THE PROPOSED 15.8-ACRE HORIZONTAL EXPANSION Subgrade construction for the 15.8-acre Horizontal Expansion requires 262,817 cubic yards excavation and 29,962 cubic yards backfill, resulting in 232,855 cubic yards excess. Daily cover operations for the 15.8-acre Horizontal Expansion is anticipated to require a 10:1 waste to cover ratio. Therefore, the 1,543,876 cubic yards net airspace is anticipated to require 140,000 cubic yards daily cover soil. The 3-foot thick final cover system for the 15.8-acre Horizontal Expansion requires 76,296 cubic yards soil. Therefore, Subgrade construction provides adequate soil for both daily cover operations and final cover. FACILITY PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 6 of 6 4.0 SPECIAL ENGINEERING FEATURES Rule 15A NCAC 13B .0537(e)(3) requires a discussion of Special Engineering Features associated with the proposed facility. 4.1 LEACHATE MANAGEMENT SYSTEMS No leachate management systems are constructed for current 11.3-acre C&DLF Facility, nor will they be included in the proposed 15.8-acre Horizontal Expansion. 4.2 CONTAINMENT AND ENVIRONMENTAL CONTROL SYSTEMS The current Nash County 11.3-acre C&DLF Facility has 6 groundwater monitoring wells sampled on a semi-annual basis. The proposed Nash County 15.8-acre Horizontal Expansion will require abandonment and relocating of groundwater monitoring well MW-6. Additional groundwater monitoring wells, designated MW-7 and MW-8, will be added per the Monitoring Plan. 4.3 BASE LINER SYSTEM No base liner systems are constructed or proposed for the current 11.3-acre C&DLF Facility. A base liner system is not included for the proposed 15.8-acre Horizontal Expansion. 4.4 OTHER DEVISED, COMPONENTS, AND STRUCTURES The current Nash County 11.3-acre C&DLF facility has installed erosion and sedimentation control devices in accordance with the approved Sediment and Erosion Control Plan which collects stormwater from the C&DLF footprint and channels it to sediment basins. The proposed Nash County 15.8-acre Horizontal Expansion requires the approved Sediment and Erosion Control Plan to be modified, including additional sediment control devices to direct all stormwater from the expanded C&DLF footprint to routed sediment basins. Engineering Plan Nash County C&D Landfill and Horizontal Expansion October 2016 1100 Crescent Green Drive, Suite 208 Cary, North Carolina 27518 • O: 919-792-1900 • F: 866-311-7206 NC FIRM C-2910 This page intentionally left blank ENGINEERING PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION i CONTENTS 1.0 INTRODUCTION ....................................................................................................... 1 2.0 SUMMARY OF FACILITY DESIGN ........................................................................... 1 2.1 ANALYTICAL METHODS USED TO EVALUATE THE DESIGN .......................... 2 2.2 CRITICAL CONDITIONS EVALUATED AND ASSUMPTIONS MADE .................. 2 2.3 TECHNICAL REFERENCES ................................................................................. 2 2.4 LOCATION RESTRICTION DEMONSTRATIONS ................................................ 2 2.4.1 FLOODPLAIN LOCATION RESTRICTIONS ................................................... 2 2.4.2 WETLANDS LOCATION RESTRICTION ........................................................ 3 2.4.3 UNSTABLE AREA LOCATION RESTRICTIONS. ........................................... 4 2.4.4 CULTURAL RESOURCES LOCATION RESTRICTIONS ............................... 4 2.4.5 STATE NATURE AND HISTORIC PRESERVE LOCATION RESTRICTIONS ............................................................................................ 5 2.4.6 WATER SUPPLY WATERSHEDS LOCATION RESTRICTIONS ................... 5 2.4.7 ENDANGERED AND THREATENED SPECIES LOCATION RESTRICTIONS ............................................................................................ 6 3.0 DESCRIPTION OF THE MATERIALS AND CONSTRUCTION PRACTICES ........... 6 3.1 HORIZONTAL SEPARATION REQUIREMENTS. ................................................. 6 3.1.1 PROPERTY LINE BUFFER. ........................................................................... 6 3.1.2 OFFSITE RESIDENTIAL STRUCTURES AND WELLS .................................. 7 3.1.3 SURFACE WATERS ....................................................................................... 7 3.1.4 EXISTING LANDFILL UNITS .......................................................................... 7 3.2 VERTICAL SEPARATION REQUIREMENTS ....................................................... 7 3.3 SURVEY CONTROL ............................................................................................. 8 3.4 LOCATION COORDINATES ................................................................................. 8 3.5 LANDFILL SUBGRADE ......................................................................................... 8 3.6 SPECIAL ENGINEERING STRUCTURES ............................................................ 9 3.7 SEDIMENTATION AND EROSION CONTROL ..................................................... 9 3.8 CONSTRUCTION QUALITY ASSURANCE (CQA) REPORT ............................... 9 ENGINEERING PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION ii 4.0 DESIGN HYDROGEOLOGIC REPORT .................................................................... 9 ATTACHMENTS FEMA FIRM PANEL 3702782884J APPENDICES APPENDIX A – WETLAND DELINEATION APPENDIX B – ENDANGERED SPECIES AND CULTURAL RESOURCES EVALUATION APPENDIX C – SETTLEMENT AND GLOBAL STABILITY CALCULATIONS ENGINEERING PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 1 of 9 1.0 INTRODUCTION Nash County (County, Owner, or Operator) owns and operates the Nash County Construction and Demolition Landfill Facility (C&DLF or Facility). The Owner’s contact information is as follows: Landfilll Site Nash County Health Department 3057 Duke Road PO Box 849 Nashville, N.C. 27856 Nashville, N.C. 27856 Phone: (252) 459-9899 Phone: (252) 459-9823 The purpose of this Engineering Plan is to provide information relative to the existing 11.3- acre Nash County C&DLF and the proposed 15.8-acre Horizontal Expansion. Rule 15A NCAC 13B .0539(d) specifies that the Engineering Report contain: (1) A summary of the facility design that includes: (A) A discussion of the analytical methods used to evaluate the design; (B) Definition of the critical conditions evaluated and assumptions made; (C) A list of technical references used in the evaluation; and (D) Completion of any applicable location restriction demonstrations in accordance with Rule .0536. (2) A description of the materials and construction practices that conforms to the requirements set forth in Rule .0540. (3) A Design Hydrogeologic Report prepared in accordance with Paragraph (b) of Rule .0538 of this Section. Each of these requirements is discussed below. 2.0 SUMMARY OF FACILITY DESIGN The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF is estimated to provide an additional 1,620,500 cubic yards gross capacity (i.e. bottom of waste to the top of final cover elevations), or about 1,543,876 cubic yards of net airspace (i.e. bottom of waste to the top of waste elevations) beyond the previously permitted top of waste elevations of the existing 11.3-acre Nash County C&DLF (Phase 1 – 3).. The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF is projected to be constructed and operated in nine (9) phases as shown on the Engineering Drawings. ENGINEERING PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 2 of 9 2.1 ANALYTICAL METHODS USED TO EVALUATE THE DESIGN Analytical methods used to evaluate the design are indicated throughout the application, as indicated. 2.2 CRITICAL CONDITIONS EVALUATED AND ASSUMPTIONS MADE Critical conditions evaluated in the design include vertical and horizontal separation of the proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF, operability, stability, and other features described throughout the application. Subgrade settlement is evaluated using the method described by Hough in “Compressibility as a Basis for Soil Bearing Value,” 1969, ASCE. Global stability of the filled proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF is evaluated using the Modified Bishop Method. Calculations for settlement as wells global stability are included in Appendix C. 2.3 TECHNICAL REFERENCES Technical references utilized in the design are indicated throughout this application. 2.4 LOCATION RESTRICTION DEMONSTRATIONS New C&DLF unit(s) and lateral expansions must comply with the siting criteria set forth in Rule 15A NCAC 13B .0536 (c), Subparagraphs (4) through (10). 2.4.1 FLOODPLAIN LOCATION RESTRICTIONS C&DLF units or constructed embankments used to construct a C&DLF unit must not be located in a 100-year floodplain unless a variance for the facility has been issued in accordance with G.S. 143-215.54A. C&DLF units must not be located in floodplains unless the owners or operators demonstrate that the unit will not restrict the flow of the flood, reduce the temporary water storage capacity of the floodplain, or result in washout of solid waste so as to pose a hazard to human health and the environment. The proposed facility occurs on Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map (FIRM) panel 3702782884J. The proposed landfill area is in Zone X –Areas determined to be outside the 0.2% annual chance floodplain. Therefore, the proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF unit is not located in a 100-year flood plain. A copy of the appropriate FEMA FIRM panel is included on the following page. ENGINEERING PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 3 of 9 2.4.2 WETLANDS LOCATION RESTRICTION New C&DLF units and lateral expansions must not be located in wetlands, unless the owner or operator can make the following demonstrations to the Division: (A) Where applicable under Section 404 of the Clean Water Act or applicable State wetlands laws, the presumption that a practicable alternative to the proposed landfill facility is available which does not involve wetlands is clearly rebutted. (B) The construction and operation of the C&DLF unit(s) will not cause or contribute to violations of any applicable State water quality standards and will not violate any applicable toxic effluent standard or prohibition under Section 307 of the Clean Water Act. (C) The construction and operation of the C&DLF unit(s) will not jeopardize the continued existence of endangered or threatened species or result in the destruction or adverse modification of a critical habitat, protected under the Federal Endangered Species Act of 1973. The construction and operation of the C&DLF unit(s) will not violate any requirement under the Marine Protection, Research, and Sanctuaries Act of 1972 for the protection of a marine sanctuary. (D) The construction and operation of the C&DLF unit(s) will not cause or contribute to significant degradation of wetlands. (E) The owner or operator must demonstrate the integrity of the C&DLF unit(s) and its ability to protect ecological resources by addressing the following factors: (1) erosion, stability, and migration potential of native wetland soils, muds and deposits used to support the C&DLF unit; (2) erosion, stability, and migration potential of dredged and fill materials used to support the C&DLF unit; the volume and chemical nature of the waste managed in the C&DLF unit; (3) impacts on fish, wildlife, and other aquatic resources and their habitat from release of the solid waste; (4) the potential effects of catastrophic release of waste to the wetland and the resulting impacts on the environment; and (5) any additional factors, as necessary, to demonstrate that ecological resources in the wetland are sufficiently protected to the extent required under Section 404 of the Clean Water Act or applicable State wetlands laws. (F) The owner or operator must demonstrate that steps have been taken to attempt to achieve no net loss of wetlands (as defined by acreage and function) by first avoiding impacts to wetlands to the maximum extent ENGINEERING PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 4 of 9 practicable as required by Part (c)(5)(A) – (D) of this Rule, then minimizing unavoidable impacts to the maximum extent practicable, and finally offsetting remaining unavoidable wetland impacts through all appropriate and practicable compensatory mitigation actions (e.g., restoration of existing degraded wetlands or creation of man-made wetlands). (G) The owner or operator must also demonstrate that sufficient information is available to make a reasonable determination with respect to each of the demonstrations required by this Rule. (H) For purposes of this Rule, wetlands means those areas that are defined in 40 CFR 232.2(r). Documentation of the wetland delineation performed for the proposed expansion is included in Appendix A. The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF does not impact delineated wetlands or associated buffers. Thus, the proposed site has met the requirements of Rule .0536(c)(5). 2.4.3 UNSTABLE AREA LOCATION RESTRICTIONS. Owners and operators of new C&DLF unit(s) and lateral expansions proposed for location in an unstable area must demonstrate that engineering measures have been incorporated in the C&DLF unit's design to ensure that the integrity of any structural components of the C&DLF unit will not be disrupted. The owner and operator must consider the following factors, at a minimum, when determining whether an area is unstable: (A) On-site or local soil conditions that may result in significant differential settling; (B) On-site or local geologic or geomorphologic features; and (C) On-site or local human-made features or events (both surface and subsurface) No conditions have been identified at the site that would cause the facility to be unstable. 2.4.4 CULTURAL RESOURCES LOCATION RESTRICTIONS A new C&DLF unit or lateral expansion must not damage or destroy a property of archaeological or historical significance which has been listed or determined eligible for a listing in the National Register of Historic Places. To aid in making a determination as to whether the property is of archeological or historical ENGINEERING PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 5 of 9 significance, the State's Historic Preservation Office in the Department of Cultural Resources may request the owner and operator to perform a site-specific survey which must be included in the Site Study. The North Carolina Department of Cultural Resources was contacted to identify any archaeological or historical properties which may be damaged or destroyed due to the construction and demolition landfill. Correspondence from the Department of Cultural Resources indicated that no properties of architectural, historic, or archaeological significance would be affected by the project. Thus, the proposed site has met the requirements of Rule .0536(c)(7). Department of Cultural Resources correspondence is located in Appendix B. 2.4.5 STATE NATURE AND HISTORIC PRESERVE LOCATION RESTRICTIONS A new C&DLF unit or lateral expansion must not have an adverse impact, considering the purposes for designation of the Preserve lands and the location, access, size and operation of the landfill, on any lands included in the State Nature and Historic Preserve. The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF will not have an adverse impact on State Nature and Historic Preservation areas. 2.4.6 WATER SUPPLY WATERSHEDS LOCATION RESTRICTIONS (A) A new C&DLF unit or lateral expansion must not be located in the critical area of a water supply watershed, or in the watershed for a stream segment classified as WS-I, or in watersheds of other water bodies which indicate that no new landfills are allowed in accordance with the rules codified at 15A NCAC 02B Section .0200 entitled "Classifications and Water Quality Standards Applicable To Surface Waters Of North Carolina." (B) Any new C&DLF unit or lateral expansion, which proposes to discharge leachate to surface waters and must obtain a National Pollution Discharge Elimination System (NPDES) Permit from the Division of Environmental Management pursuant to Section 402 of the United States Clean Water Act, must not be located within watersheds classified as WS-II or WS-III, or in watersheds of other water bodies which indicate that no new discharging landfills are allowed, in accordance with the rules codified at 15A NCAC 02B Section .0200. The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF ultimately drains to Pigbasket Creek, which is designated Class B. ENGINEERING PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 6 of 9 No special restrictions exist for Class B streams. The facility does not drain to a stream designated WS-I, WS-II, or WS-III. The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF is not located in the critical area of a water supply watershed, or in the watershed for a stream segment classified as WS-I, or in watersheds of other water bodies which indicate that no new landfills are allowed in accordance with the rules codified at 15A NCAC 02B Section .0200. The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF will not discharge leachate to surface water bodies, therefore an NPDES permit will not be required. 2.4.7 ENDANGERED AND THREATENED SPECIES LOCATION RESTRICTIONS A new C&DLF unit or lateral expansion must not jeopardize the continued existence of endangered or threatened species or result in the destruction or adverse modification of a critical habitat, protected under the Federal Endangered Species Act of 1973. Carolina Ecosystems, Inc., performed an assessment of endangered and threatened species at the facility. As documented in Appendix B, habitat for federally threatened or endangered species under the protection of the Endangered Species act is not present on site. 3.0 DESCRIPTION OF THE MATERIALS AND CONSTRUCTION PRACTICES 3.1 HORIZONTAL SEPARATION REQUIREMENTS. 3.1.1 PROPERTY LINE BUFFER. New C&DLF unit(s) at a new facility must establish a minimum 200-foot buffer between the C&DLF unit and all property lines for monitoring purposes. The horizontal separation requirement between the disposal boundary (edge of waste) and the property lines is a minimum of 200 feet per Section .0540(2) (which allows a 50- foot buffer for existing operating units). As shown on Sheet 1 of the Engineering Drawings, the property line buffer is satisfied with the proposed 15.8-acre Horizontal Expansion of the existing 11.3- acre Nash County C&DLF. ENGINEERING PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 7 of 9 3.1.2 OFFSITE RESIDENTIAL STRUCTURES AND WELLS All C&DLF units at a new facility must establish a minimum 500-foot buffer between the C&DLF unit and existing residential structures and wells. As shown on Sheet 1 of the Engineering Drawings, The 500-foot buffer horizontal separation requirement between the disposal boundary (edge of waste) and private residences and wells and the disposal boundary is satisfied with the proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF. 3.1.3 SURFACE WATERS All C&DLF units at new facilities must establish a minimum 50-foot buffer between the C&DLF unit and any stream, river, lake, pond or other waters of the state as defined in G.S. 143-212. The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF does not occur within 50 feet of any stream, river, lake, pond or other waters of the state. 3.1.4 EXISTING LANDFILL UNITS A monitoring zone must be established between a new C&DLF unit and any existing landfill units such as MSW, Industrial, C&DLF, or Land Clearing and Inert Debris (LCID), in order to establish a ground-water monitoring system as set forth in Rule .0544 of this Section. A monitoring zone has been established between the proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF and the existing closed MSW landfill unit. 3.2 VERTICAL SEPARATION REQUIREMENTS C&DLF unit(s) must be constructed so that the post-settlement bottom elevation of waste is a minimum of four feet above the seasonal high ground-water table and the bedrock datum plane contours established in the Design Hydrogeological Report prepared in accordance with Paragraph (b) of Rule .0538 of this Section. The seasonal high ground-water table is higher than bedrock within the entire area of the proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF. Therefore, the seasonal high ground-water table is the design constraint for vertical separation. The subgrade is closest to the seasonal high ground-water table bottom of the northern most internal 3:1 side slope as seen in Section A. Calculations are included in Appendix C demonstrating the maximum settlement within the post- settlement bottom elevation of waste is approximately four (4) inches. The proposed ENGINEERING PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 8 of 9 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF subgrade has been designed so that the post-settlement bottom elevation of waste is a minimum of four feet above the seasonal high ground-water table. Therefore The proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF base grades meet the minimum requirement of four feet above the seasonal high groundwater table and bedrock. 3.3 SURVEY CONTROL One permanent benchmark of known elevation measured from a U.S. Geological Survey benchmark must be established and maintained for each 50 acres of developed landfill, or part thereof, at the landfill facility. This benchmark shall be the reference point for establishing vertical elevation control. Any survey performed pursuant to this Sub-Item must be performed by a Registered Land Surveyor. There are currently no permanent benchmarks at the facility. Permanent benchmarks will be established during the construction of the first phase of the proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF. The location of the permanent benchmarks will be provided to NCDENR upon establishment. 3.4 LOCATION COORDINATES The Latitude and Longitude, expressed in decimal degrees, at the approximate center of the facility is Latitude 36.06, Longitude -78.01. 3.5 LANDFILL SUBGRADE The landfill subgrade is the in-situ or modified soil layer(s), constructed embankments, and select fill providing the foundation for construction of the unit. The landfill subgrade must be graded in accordance to the plans and specifications prepared in accordance to Rule .0539 of this Section, which are incorporated into the permit to construct in accordance with Paragraph (b) of Rule .0534 of this Section as follows: (A) The owner or operator of the C&DLF unit must have the subgrade inspected by a qualified geologist or engineer when excavation is completed. (B) The owner or operator of the C&DLF unit must notify the Division's hydrogeologist at least 24 hours before subgrade inspection. (C) Compliance with the requirements of Sub-Item (2)(b) of this Rule must be in accordance with Paragraph (b) of Rule .0538 of this Section or by placement of soil in accordance with this Sub-Item and verified in accordance with Rule .0541 of this Section. ENGINEERING PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 9 of 9 The subgrade elevations will be achieved by excavation or placement of compacted structural fill (embankment). During excavation, a determination of unsuitable soils (i.e. soils which are too soft, wet, or organic) will be made. Where unsuitable soils are found, the soils will be undercut and backfilled with structural fill. In addition to providing the landfill foundation in fill areas, structural fill will be used for berm and roadway construction. Structural fill will consist of on-site soils removed during excavation or imported borrow soils, except that no CH, OL, or OH soils will be allowed. In addition, it will be field verified as described in the CQA Plan the soils making up the upper two feet of separation are as specified in the approved construction plan or have a Unified Soil Classification System of SC, SM, ML, CL,MH or CH. 3.6 SPECIAL ENGINEERING STRUCTURES No special engineering structures are proposed as part of the C&DLF Expansion. 3.7 SEDIMENTATION AND EROSION CONTROL Adequate structures and measures must be designed and maintained to manage the run-on and run-off generated by the 24-hour, 25-year storm event, and conform to the requirements of the Sedimentation Pollution Control Law (15A NCAC 04) and any required NPDES permits. The Erosion and Sedimentation Control structures provided will be designed and maintained to manage the run-off generated by the 24-hour, 25-year storm event, and conform to the requirements of the Sedimentation Pollution Control Law (15A NCAC 04). A detailed discussion of site erosion and sedimentation control for the proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF will be submitted under separate cover. 3.8 CONSTRUCTION QUALITY ASSURANCE (CQA) REPORT A CQA report must be submitted in accordance with Rule .0541 of this Section. The CQA Plan for the facility is included as a separate section of this application titled Construction Quality Assurance (CQA) Plan. 4.0 DESIGN HYDROGEOLOGIC REPORT A copy of the Design Hydrogeologic Report prepared in accordance with Paragraph (b) of Rule .0538 of this Section is included in the section titled Design Hydrogeologic Report ENGINEERING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL ATTACHMENT FEMA FIRM PANEL 3702782884J ENGINEERING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL APPENDIX A WETLANDS DELINEATION 3040 NC 42 West, Clayton NC 27520 P:919-606-1065 – F:919-585-5570 July 31, 2013 Mr. Thomas Brown Raleigh Regulatory Field Office US Army Corps of Engineers 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 RE: Request for Preliminary Jurisdictional Determination Garrett & Moore; Nash County C & D Landfill Nash County, North Carolina Dear Mr. Brown; Carolina Ecosystems, Inc. (CEI) has completed a delineation of streams and wetlands for the above referenced project for Garrett & Moore. The attached information is submitted for your review and determination of jurisdiction under the Clean Water Act (CWA). Enclosed please find the following information:  Project Information Sheet  Preliminary Jurisdictional Determination Form  Stream and Wetland Summary Tables  Project Vicinity Map  USGS Map  NRCS Soil Survey Map  Delineation Figures  Wetland Data Forms Project Description & Methodology As shown in Figure 1, the Nash County Landfill project is located in Nash County, NC within the Tar-Pamlico River Basin (USGS HUC 03020101). The study area consists of the northern side of the drainage feature adjacent to the proposed landfill expansion area (Figure 4). This delineation was performed in compliance with methodology set forth in the U.S Army Corps of Engineers (USACE) Wetland Delineation Manual (USACE 1987) and subsequent guidance including the Eastern Mountains and Piedmont Regional supplement. Streams were assessed for jurisdiction under the CWA using field indications of ordinary high water mark and for jurisdiction under the Tar-Pamlico Buffer rules using the NCDWQ Stream Identification Form, Version 4.1.1. Delineation Results Figure 2 is presented using the following US Geological Survey 1:24,000 quadrangle maps: Castalia and Red Oak. Figure 3 is presented using the Nash County Soil Survey sheets 3 and 4. Figure 4 presents the results of the delineation, including approximate stream and wetland Nash County Landfill Preliminary JD Request July 31, 2013 Page 2 locations overlaid on aerial photography from the National Agricultural Imagery Program (NAIP) 2012. Table 1 presents detailed information on the jurisdictional stream within the study area, including status (intermittent or perennial), bank height, bank width, length within the study area, and latitude/longitude. Table 2 presents detailed information on the wetland feature including NC Wetland Assessment Method (NCWAM) Type, Cowardin Class, Hydrologic Class, and latitude/longitude. We respectfully request your review of this information and determination of jurisdiction under the CWA. A copy of this information is also being provided to the Raleigh Regional Office of the North Carolina Division of Water Quality for their review and determination of jurisdiction under the Tar-Pamlico Buffer rules. If you have any questions, need additional information, or would like to schedule a site visit, please contact me at your earliest convenience at (919) 606-1065 or phil.may@carolinaeco.com. Sincerely, Carolina Ecosystems, Inc. Philip May Senior Environmental Scientist Attachments: Project Information Sheet Preliminary Jurisdictional Determination Form Stream and Wetland Summary Tables Project Vicinity Map USGS Map NRCS Soil Survey Map Delineation Figures Stream and Wetland Data Forms Cc: Tom Ascenzo, NCDENR-Raleigh Regional Office Matthew Richardson, Solid Waste Director, Nash County Landfill. Craig Fortner, P.E., Garrett & Moore, Inc. 3040 NC 42 West; Clayton, NC 27520 P:919-606-1065 – F:919-585-5570 Project Information Sheet Date: 07/31/13 Project Name: Nash County C & D Landfill Name of Property Owner/Applicant: Matthew Richardson, Solid Waste Director, Nash County Landfill Consultant/Agent: Carolina Ecosystems, Inc. Related/Previous Action IDs: None Site Address: 3057 Duke Road, Nashville, NC 27856 Subdivision Name (if applicable): N/A City: Nashville, NC County: Nash County Lat: 36.0550 Long: -78.0047 USGS Quadrangle(s): Castalia and Red Oak River Basin(s): Tar-Pamlico 8-Digit HUC(s): 03020101 Nearest Stream(s): Pig Basket Creek Directions to Site: From Raleigh take US-64 east to Exit 459 (NC-58).Turn left (north) on NC-58. Turn right on Taylors Store Rd, approximately ½ mile from the exit. After 5.6 miles, turn left onto Duke Rd. The landfill entrance is approximately 1 mile on the left. Requested Action: Pre-application Request Jurisdictional Determination Request Final Preliminary Permit Application: Nationwide General Individual 1 ATTACHMENT PRELIMINARY JURISDICTIONAL DETERMINATION FORM BACKGROUND INFORMATION A. REPORT COMPLETION DATE FOR PRELIMINARY JURISDICTIONAL DETERMINATION (JD): B. NAME AND ADDRESS OF PERSON REQUESTING PRELIMINARY JD: Matthew Richardson Solid Waste Director, Nash County Landfill 3057 Duke Rd Nashville, NC 27856 C. DISTRICT OFFICE, FILE NAME, AND NUMBER: D. PROJECT LOCATION(S) AND BACKGROUND INFORMATION: Nash County C & D Landfill: Construction and demolition landfill expansion. (USE THE ATTACHED TABLE TO DOCUMENT MULTIPLE WATERBODIES AT DIFFERENT SITES) State:NC County/parish/borough: Nash City: Nashville Center coordinates of site (lat/long in degree decimal format): Lat. see table° N, Long. see table° E. Universal Transverse Mercator: Name of nearest waterbody: Pig Basket Creek Identify (estimate) amount of waters in the review area: Non-wetland waters: 1500 linear feet: width (ft) and/or acres. Cowardin Class: Riverine Stream Flow: Perennial Wetlands: 0.4 acres. Cowardin Class: Forested Name of any water bodies on the site that have been identified as Section 10 waters: Tidal: None Non-Tidal: None E. REVIEW PERFORMED FOR SITE EVALUATION (CHECK ALL THAT APPLY): Office (Desk) Determination. Date: Field Determination. Date(s): 2 1. The Corps of Engineers believes that there may be jurisdictional waters of the United States on the subject site, and the permit applicant or other affected party who requested this preliminary JD is hereby advised of his or her option to request and obtain an approved jurisdictional determination (JD) for that site. Nevertheless, the permit applicant or other person who requested this preliminary JD has declined to exercise the option to obtain an approved JD in this instance and at this time. 2. In any circumstance where a permit applicant obtains an individual permit, or a Nationwide General Permit (NWP) or other general permit verification requiring “pre-construction notification” (PCN), or requests verification for a non-reporting NWP or other general permit, and the permit applicant has not requested an approved JD for the activity, the permit applicant is hereby made aware of the following: (1) the permit applicant has elected to seek a permit authorization based on a preliminary JD, which does not make an official determination of jurisdictional waters; (2) that the applicant has the option to request an approved JD before accepting the terms and conditions of the permit authorization, and that basing a permit authorization on an approved JD could possibly result in less compensatory mitigation being required or different special conditions; (3) that the applicant has the right to request an individual permit rather than accepting the terms and conditions of the NWP or other general permit authorization; (4) that the applicant can accept a permit authorization and thereby agree to comply with all the terms and conditions of that permit, including whatever mitigation requirements the Corps has determined to be necessary; (5) that undertaking any activity in reliance upon the subject permit authorization without requesting an approved JD constitutes the applicant’s acceptance of the use of the preliminary JD, but that either form of JD will be processed as soon as is practicable; (6) accepting a permit authorization (e.g., signing a proffered individual permit) or undertaking any activity in reliance on any form of Corps permit authorization based on a preliminary JD constitutes agreement that all wetlands and other water bodies on the site affected in any way by that activity are jurisdictional waters of the United States, and precludes any challenge to such jurisdiction in any administrative or judicial compliance or enforcement action, or in any administrative appeal or in any Federal court; and (7) whether the applicant elects to use either an approved JD or a preliminary JD, that JD will be processed as soon as is practicable. Further, an approved JD, a proffered individual permit (and all terms and conditions contained therein), or individual permit denial can be administratively appealed pursuant to 33 C.F.R. Part 331, and that in any administrative appeal, jurisdictional issues can be raised (see 33 C.F.R. 331.5(a)(2)). If, during that administrative appeal, it becomes necessary to make an official determination whether CWA jurisdiction exists over a site, or to provide an official delineation of jurisdictional waters on the site, the Corps will provide an approved JD to accomplish that result, as soon as is practicable. This preliminary JD finds that there “may be” waters of the United States on the subject project site, and identifies all aquatic features on the site that could be affected by the proposed activity, based on the following information: 3 SUPPORTING DATA. Data reviewed for preliminary JD (check all that apply - checked items should be included in case file and, where checked and requested, appropriately reference sources below): Maps, plans, plots or plat submitted by or on behalf of the applicant/consultant: . Data sheets prepared/submitted by or on behalf of the applicant/consultant. Office concurs with data sheets/delineation report. Office does not concur with data sheets/delineation report. Data sheets prepared by the Corps: . Corps navigable waters’ study: . U.S. Geological Survey Hydrologic Atlas: . USGS NHD data. USGS 8 and 12 digit HUC maps. U.S. Geological Survey map(s). Cite scale & quad name:1:24000 Castalia and Red Oak. USDA Natural Resources Conservation Service Soil Survey. Citation:Nash County Soil Survey . National wetlands inventory map(s). Cite name: . State/Local wetland inventory map(s): . FEMA/FIRM maps: . 100-year Floodplain Elevation is: (National Geodectic Vertical Datum of 1929) Photographs: Aerial (Name & Date):NAIP (2012). or Other (Name & Date): . Previous determination(s). File no. and date of response letter: . Other information (please specify): . IMPORTANT NOTE: The information recorded on this form has not necessarily been verified by the Corps and should not be relied upon for later jurisdictional determinations. _________________________ __________________________ Signature and date of Signature and date of Regulatory Project Manager person requesting preliminary JD (REQUIRED) (REQUIRED, unless obtaining the signature is impracticable) 2 1. The Corps of Engineers believes that there may be jurisdictional waters of the United States on the subject site, and the permit applicant or other affected party who requested this preliminary JD is hereby advised of his or her option to request and obtain an approved jurisdictional determination (JD) for that site. Nevertheless, the permit applicant or other person who requested this preliminary JD has declined to exercise the option to obtain an approved JD in this instance and at this time. 2. In any circumstance where a permit applicant obtains an individual permit, or a Nationwide General Permit (NWP) or other general permit verification requiring “pre-construction notification” (PCN), or requests verification for a non-reporting NWP or other general permit, and the permit applicant has not requested an approved JD for the activity, the permit applicant is hereby made aware of the following: (1) the permit applicant has elected to seek a permit authorization based on a preliminary JD, which does not make an official determination of jurisdictional waters; (2) that the applicant has the option to request an approved JD before accepting the terms and conditions of the permit authorization, and that basing a permit authorization on an approved JD could possibly result in less compensatory mitigation being required or different special conditions; (3) that the applicant has the right to request an individual permit rather than accepting the terms and conditions of the NWP or other general permit authorization; (4) that the applicant can accept a permit authorization and thereby agree to comply with all the terms and conditions of that permit, including whatever mitigation requirements the Corps has determined to be necessary; (5) that undertaking any activity in reliance upon the subject permit authorization without requesting an approved JD constitutes the applicant’s acceptance of the use of the preliminary JD, but that either form of JD will be processed as soon as is practicable; (6) accepting a permit authorization (e.g., signing a proffered individual permit) or undertaking any activity in reliance on any form of Corps permit authorization based on a preliminary JD constitutes agreement that all wetlands and other water bodies on the site affected in any way by that activity are jurisdictional waters of the United States, and precludes any challenge to such jurisdiction in any administrative or judicial compliance or enforcement action, or in any administrative appeal or in any Federal court; and (7) whether the applicant elects to use either an approved JD or a preliminary JD, that JD will be processed as soon as is practicable. Further, an approved JD, a proffered individual permit (and all terms and conditions contained therein), or individual permit denial can be administratively appealed pursuant to 33 C.F.R. Part 331, and that in any administrative appeal, jurisdictional issues can be raised (see 33 C.F.R. 331.5(a)(2)). If, during that administrative appeal, it becomes necessary to make an official determination whether CWA jurisdiction exists over a site, or to provide an official delineation of jurisdictional waters on the site, the Corps will provide an approved JD to accomplish that result, as soon as is practicable. This preliminary JD finds that there “may be” waters of the United States on the subject project site, and identifies all aquatic features on the site that could be affected by the proposed activity, based on the following information: 3 SUPPORTING DATA. Data reviewed for preliminary JD (check all that apply - checked items should be included in case file and, where checked and requested, appropriately reference sources below): Maps, plans, plots or plat submitted by or on behalf of the applicant/consultant: . Data sheets prepared/submitted by or on behalf of the applicant/consultant. Office concurs with data sheets/delineation report. Office does not concur with data sheets/delineation report. Data sheets prepared by the Corps: . Corps navigable waters’ study: . U.S. Geological Survey Hydrologic Atlas: . USGS NHD data. USGS 8 and 12 digit HUC maps. U.S. Geological Survey map(s). Cite scale & quad name:1:24000 Castalia and Red Oak. USDA Natural Resources Conservation Service Soil Survey. Citation:NAsh County Soil Survey . National wetlands inventory map(s). Cite name: . State/Local wetland inventory map(s): . FEMA/FIRM maps: . 100-year Floodplain Elevation is: (National Geodectic Vertical Datum of 1929) Photographs: Aerial (Name & Date):NAIP (2012). or Other (Name & Date): . Previous determination(s). File no. and date of response letter: . Other information (please specify): . IMPORTANT NOTE: The information recorded on this form has not necessarily been verified by the Corps and should not be relied upon for later jurisdictional determinations. _________________________ __________________________ Signature and date of Signature and date of Regulatory Project Manager person requesting preliminary JD (REQUIRED) (REQUIRED, unless obtaining the signature is impracticable) Nash County C D Landfill Table 1 Streams July 2013 Stream Status Bankfull Height (Feet) Bankfull Width (Feet) Length (Approx) (Feet)DWQ Lat Long SA I 1 4 1500 21 36.0547 -78.0041 Stream Name Note: Perennial streams with under 30 DWQ score have biological indicators I = Intermittent, P = Perennial, - = No Score Page 1 of 1 Nash County C D Landfill Table 2 Wetlands July 2013 Wetland Size ID NCWAM Hydrologic Cowardin (Acres)WET UP Lat Long WA Headwater Forest Riparian Palustrine Forested 0.1 WE WE 36.0548 -78.0031 WB Headwater Forest Riparian Palustrine Forested 0.1 WE WE 36.0555 -78.0014 WC Headwater Forest Riparian Palustrine Forested 0.1 WE WE 36.0555 -78.0019 WD Headwater Forest Riparian Palustrine Forested <0.1 WE WE 36.0552 -78.0023 WE Headwater Forest Riparian Palustrine Forested <0.1 WE WE 36.0550 -78.0027 USACE FormsClass PEM = Palustrine Emergent; PFO = Palustrine Forested; PSS = Palustrine Scrub-Shrub; PUBH = Palustrine Unconsolidated Bottom, Permanently FloodedPage 1 of 1 3040 NC 42 West; Clayton NC, 27520P:(919)-606-9145 F:(919)-585-5570 July 2013 Nash County LandfillNash County, NC Figure 1: Vicinity Map I -9 5 U S -6 4 N C - 5 8 Duke Rd T a y l o r S t o r e R d W Castalia Rd I -9 5 T a y l o r S t o r e R d N C -58 N C-58 U S -6 4 NC-58 StonyCreek P i g B ask et Creek RedBud C r e e k Back S w a m p S a n d y C r e e k Tumbli n g R u n LittleSaponyCre e k F l a t R o c k B r a n c h MapleCreek Red Oak Nashville Castalia Rocky Mount ³0 1.5 Miles Site Boundary State Route USGS Named Streams 3040 NC 42 West; Clayton NC, 27520P:(919)-606-9145 F:(919)-585-5570 July 2013 Nash County LandfillNash County, NC Figure 2: USGS Map³0 1,000 Feet Site Boundary Study Area Red Oak and Castalia USGS Quads 3040 NC 42 West; Clayton NC, 27520P:(919)-606-9145 F:(919)-585-5570 July 2013 Nash County LandfillNash County, NC Figure 3: NRCS Soil Survey³0 1,000 Feet Site Boundary 3040 NC 42 West; Clayton NC, 27520P:(919)-606-9145 F:(919)-585-5570 July 2013 Nash County LandfillNash County, NC Figure 4: Project Study Area Map WC WB WA WE WD ³0 350 Feet Site Boundary Wetlands Stream Contour 5' Aerial Photograph SA E/I Jurisdictional features are approximated based on field sketches and subject to change ENGINEERING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL APPENDIX B ENDANGERED SPECIES AND CULTURAL RESOURCES EVALUATION From:Phil May To:Craig Fortner Subject:Nash County Landfill Date:Friday, August 08, 2014 2:13:45 PM Craig,   In regard to the Nash County Landfill expansion, in our professional opinion the project will have no  effect on federally listed threatened or endangered species.  The following is the US Fish and  Wildlife Service list of species potentially occurring in Nash County (as of July 2014):   - Bald Eagle – No nest trees or eagles were noted on site during initial habitat assessments in  2010 and the delineation in 2013. - Red-cockaded woodpecker – No RCW nesting or foraging habitat (suitably aged pine stands)  were found within the project limits during habitat assessments performed in 2010.  RCW is  listed as a historic (over 50 year old) occurrence by USFWS in Nash Co. - Tar River spiny mussel and dwarf wedgemussel – No surveys were done for these species  however Pig Basket Creek is impounded by beaver on the site and therefore not suitable  habitat adjacent to the landfill expansion.  As no impacts to surface waters are proposed  and appropriate sediment and erosion control measures will be implemented, there should  be no effect on these species.   A review of the North Carolina Natural Heritage Element Occurrence Database, last updated in July  2014, shows that there are no recorded occurrences of federally listed species within the landfill  property or a 2-mile radius.  Since no occurrences  and no habitat are present, and no effect on the  listed species is anticipated, consultation with the US Fish and Wildlife Service is not required.  Let  me know if you have any questions. Thanks Phil     Phil May Senior Scientist Carolina Ecosystems, Inc. 3040 NC Hwy 42 West Clayton NC 27520 (919) 606-1065   Follow us on LinkedIn       North Carolina Department of Cultural Resources State Historic Preservation Office Peter B. Sandbeck, Administrator Beverly Eaves Perdue, Governor Office of Archives and History Linda A. Carlisle, Secretary Division of Historical Resources Jeffrey J. Crow, Deputy Secretary David Brook, Director Location: 109 East Jones Street, Raleigh NC 27601 Mailing Address: 4617 Mail Service Center, Raleigh NC 27699-4617 Telephone/Fax: (919) 807-6570/807-6599 October 7, 2010 Nick Parks Garrett & Moore, Inc. 1258 Benson Road Garner, NC 27529 Re: Expand the Nash County Landfill, 3057 Duke Road, Castalia, Nash County, ER 10-1780 Dear Mr. Parks: Thank you for your email of September 16, 2010, concerning the above project. We have conducted a review of the project and are aware of no historic resources which would be affected by the project. Therefore, we have no comment on the project as proposed. The above comments are made pursuant to Section 106 of the National Historic Preservation Act and the above comments are made pursuant to Section 106 of the National Historic Preservation Act and the Advisory Council on Historic Preservation’s Regulations for Compliance with Section 106 codified at 36 CFR Part 800. Thank you for your cooperation and consideration. If you have questions concerning the above comment, please contact Renee Gledhill-Earley, environmental review coordinator, at 919-807-6579. In all future communication concerning this project, please cite the above-referenced tracking number. Sincerely, Peter Sandbeck ENGINEERING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL APPENDIX C SETTLEMENT AND GLOBAL STABILITY CALCULATIONS Page 1 of 3 PROJECT SUBJECT COMPUTED BY CHECKED BY DATE Purpose Evaluate settlement of in-situ materials with the development and filling of the Horizontal Expansion of the Nash Count C&D Landfill Consolidation settlement (METHOD 1) is evaluated using the Terzaghi method for one-dimensional consolidation settlement. Compression of in-situ granular materials is evaluated using elastic theory and the method described by Hough (METHOD 2). Elastic compression is considered to primary mode of settlement for this analysis Boring P-22 ∆Stress:60 pcf, unit weight of C&D waste 100 ft, height of proposed waste fill Top Waste:310 Base:210 115 pcf, unit weight of final cover 3 ft, thickness of final cover Ex. GS Elev.236 110 pcf, unit weight of overburden -26 ft, overburden to be removed GW Elev.205.53485psf, ∆σv Water Table:30.5 ft, depth to phreatic surface Method 1 - Terzaghi 1-D Consolidation Method 2 - Hough Elastic Compression Sublayer Descr.Consol.Depth γwet γeff H0 Havg σvo' bot σvo' avg ∆σv eo σp'Cc Cr C'∆ H Method ft pcf pcf ft ft psf psf psf dim psf dim dim dim ft 1 Clayey Silt 2 2 110 110 2 1 220 47.6 3485 65 0.058 2 Clayey Silt 2 6 115 115 4 2 680 450 3485 65 0.058 3 Clayey Silt 2 12 115 115 6 3 1370 1025 3485 45 0.086 4 Clayey Silt 2 25 115 115 13 6.5 2865 2117.5 3485 45 0.122 Total Estimated Settlement, ft =0.32 Total Estimated Settlement, in. =3.9 Existing Ground Surface Elev. Groundwater Elevation JSBCMF Shotwell C&D Landfill, Phase 4 Permit to Construct Settlement Analysis 8/8/2014 Maximum Fill Depth ' 'log1' 'log1 p vvo o oc vo p o ori e HCe HCH σ σσ σ σ ∆+ +++=∆ ' 'log vo vvooiC HH σ σσ∆+=∆ PROJECT Horizontal Expansion of the Nash Co. C&DLF SUBJECT Settlement Analysis COMPUTED BY CMF CHECKEDJSB DATE 8/8/2014 PROJECT Horizontal Expansion of the Nash Co. C&DLF SUBJECT Settlement Analysis COMPUTED BY CMF CHECKEDJSB DATE 8/8/2014 Bearing Capacity Index versus corrected SPT Value (Cheney and Chassie 1982, modified from Hough 1959) Cheney, R.S., and Chassie, R.G. (1982). Soils and Foundations Workshop Manual, FHWA Report no. FHWA-NHI-88-009, NHI Course No. 13212, Washington, DC, 338pp. 0 10 0 20 0 30 0 40 0 50 0 60 0 700 800 0 10 0 20 0 30 0 40 0 50 0 Na s h C o . C & D L a n d f i l l E x p a n s i o n G l o b a l S t a b i l i t y v: \ n a s h \ p r o j e c t s \ c & d l f s o l i d w a s t e p e r m i t \ c & d l f p e r m i t u p d a t e p e r 0 5 4 7 \ c & d e x p a n s i o n \ a m e n d m e n t a p p l i c a t i o n \ 2 - e n g i n e e r i n g p l a n \s e t t l e m e n t a n d g l o b a l s t a b i l i t y \ n a s h e x p . p l 2 R u n B y : C r a i g F o r t n e r , G a r r e t t & M o o r e , I n c 8 / 1 2 / 2 0 1 4 1 1 1 1 1 1 3 3 3 1 1 1 1 1 1 1 1 2 b c d e f g h i j a #F S a2 . 4 7 b2 . 5 1 c2 . 5 2 d2 . 5 8 e2 . 5 9 f2 . 5 9 g2 . 6 0 h2 . 6 6 i2 . 7 0 j2 . 7 1 So i l De s c . Si l t PW R C& D So i l Ty p e No . 1 2 3 To t a l Un i t W t . (p c f ) 11 0 . 0 12 0 . 0 60 . 0 Sa t u r a t e d Un i t W t . (p c f ) 11 0 . 0 12 0 . 0 60 . 0 Co h e s i o n In t e r c e p t (p s f ) 0. 0 20 0 0 . 0 50 0 . 0 Fr i c t i o n An g l e (d e g ) 26 . 0 0. 0 25 . 0 Pi e z . Su r f a c e No . 0 0 0 PC S T A B L 5 M / s i F S m i n = 2 . 4 7 Sa f e t y F a c t o r s A r e C a l c u l a t e d B y T h e M o d i f i e d B i s h o p M e t h o d ** PCSTABL5M ** by Purdue University --Slope Stability Analysis-- Simplified Janbu, Simplified Bishop or Spencer`s Method of Slices Run Date: 8/12/2014 Time of Run: 11:04AM Run By: Craig Fortner, Garrett & Moore, Inc Input Data Filename: V:nash exp.in Output Filename: V:nash exp.OUT Unit: ENGLISH Plotted Output Filename: V:nash exp.PLT PROBLEM DESCRIPTION Nash Co. C&D Landfill Expansion Global Stability 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 0.00 236.34 181.48 236.66 1 2 181.48 236.66 187.47 234.67 1 3 187.47 234.67 192.49 234.67 1 4 192.49 234.67 198.49 236.68 1 5 198.49 236.68 552.97 325.00 3 6 552.97 325.00 666.73 332.84 3 7 666.73 332.84 759.93 328.66 3 V:nash exp.OUT Page 2 8 198.49 236.68 210.87 236.68 1 9 210.87 236.68 247.70 218.30 1 10 247.70 218.30 369.45 213.69 1 11 369.45 213.69 508.83 210.68 1 12 508.83 210.68 555.51 233.98 1 13 555.51 233.98 626.12 234.02 1 14 626.12 234.02 681.22 220.24 1 15 681.22 220.24 759.93 219.01 1 16 0.00 208.38 759.93 211.48 2 ISOTROPIC SOIL PARAMETERS 3 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. 1 110.0 110.0 0.0 26.0 0.00 0.0 0 2 120.0 120.0 2000.0 0.0 0.00 0.0 0 3 60.0 60.0 500.0 25.0 0.00 0.0 0 A Critical Failure Surface Searching Method, Using A Random Technique For Generating Circular Surfaces, Has Been Specified. 100 Trial Surfaces Have Been Generated. 10 Surfaces Initiate From Each Of 10 Points Equally Spaced Along The Ground Surface Between X = 50.00 ft. and X = 200.00 ft. Each Surface Terminates Between X = 550.00 ft. and X = 650.00 ft. Unless Further Limitations Were Imposed, The Minimum Elevation At Which A Surface Extends Is Y = 0.00 ft. 10.00 ft. Line Segments Define Each Trial Failure Surface. 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 57 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 183.33 236.04 2 190.50 229.07 3 197.91 222.35 4 205.55 215.90 5 213.42 209.73 6 221.50 203.84 7 229.78 198.24 8 238.26 192.93 9 246.92 187.94 10 255.75 183.25 11 264.75 178.88 12 273.89 174.82 13 283.17 171.10 14 292.58 167.71 15 302.10 164.65 16 311.72 161.94 17 321.44 159.56 18 331.23 157.54 19 341.09 155.86 20 351.00 154.53 21 360.95 153.56 22 370.93 152.94 23 380.93 152.67 24 390.93 152.76 25 400.92 153.20 26 410.89 154.00 27 420.82 155.15 28 430.71 156.65 29 440.54 158.50 30 450.29 160.70 31 459.96 163.25 32 469.54 166.13 33 479.00 169.36 34 488.35 172.91 35 497.56 176.80 V:nash exp.OUT Page 3 36 506.63 181.01 37 515.55 185.54 38 524.30 190.39 39 532.87 195.54 40 541.25 200.99 41 549.43 206.74 42 557.41 212.77 43 565.17 219.08 44 572.69 225.66 45 579.98 232.51 46 587.02 239.61 47 593.81 246.96 48 600.33 254.54 49 606.58 262.35 50 612.54 270.37 51 618.22 278.60 52 623.60 287.03 53 628.68 295.65 54 633.45 304.43 55 637.91 313.39 56 642.04 322.49 57 645.71 331.39 Circle Center At X = 383.4 ; Y = 434.5 and Radius, 281.8 *** 2.466 *** Individual data on the 68 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 4.1 603.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 3.0 1375.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3 2.0 1423.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4 5.4 6418.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5 0.6 925.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 7.1 14196.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 5.3 14150.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 2.5 7711.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9 0.7 2056.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 7.4 25682.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 8.3 33473.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12 8.5 39094.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13 8.7 44551.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 14 0.8 4220.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15 8.1 46327.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16 9.0 57400.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17 9.1 64060.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18 9.3 70475.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 19 9.4 76601.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20 9.5 82397.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21 9.6 87823.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22 9.7 92843.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23 9.8 97425.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24 9.9 101539.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25 9.9 105159.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26 10.0 108262.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27 8.5 94216.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28 1.5 16613.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29 10.0 112896.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 30 10.0 114429.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 31 10.0 115392.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 32 10.0 115779.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 33 9.9 115592.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 34 9.9 114834.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 35 9.8 113512.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 36 9.8 111639.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 37 9.7 109230.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 38 9.6 106304.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 39 9.5 102883.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 40 9.3 98996.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 41 9.2 94671.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 V:nash exp.OUT Page 4 42 9.1 89940.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 43 2.2 21262.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 44 6.7 64166.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 45 8.7 81939.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 46 8.6 78103.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 47 8.4 73893.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 48 8.2 69351.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 49 3.5 29003.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 50 1.6 13132.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 51 0.9 7277.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 52 1.9 14982.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 53 7.8 58030.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 54 7.5 51219.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 55 7.3 44439.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 56 1.5 8330.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 57 5.6 30190.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 58 6.8 34318.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 59 6.5 30237.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 60 6.2 26252.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 61 6.0 22387.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 62 5.7 18672.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 63 5.4 15133.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 64 5.1 11796.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 65 4.8 8685.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 66 4.5 5825.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 67 4.1 3239.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 68 3.7 951.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Failure Surface Specified By 55 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 200.00 237.06 2 207.32 230.25 3 214.89 223.71 4 222.69 217.45 5 230.72 211.49 6 238.95 205.82 7 247.39 200.45 8 256.03 195.40 9 264.84 190.67 10 273.81 186.27 11 282.95 182.20 12 292.22 178.46 13 301.63 175.07 14 311.16 172.02 15 320.79 169.33 16 330.51 166.99 17 340.31 165.00 18 350.18 163.38 19 360.10 162.12 20 370.06 161.22 21 380.04 160.69 22 390.04 160.53 23 400.04 160.73 24 410.02 161.30 25 419.98 162.23 26 429.89 163.53 27 439.76 165.19 28 449.55 167.21 29 459.26 169.59 30 468.88 172.32 31 478.40 175.40 32 487.79 178.83 33 497.05 182.60 34 506.17 186.71 35 515.13 191.14 36 523.92 195.91 37 532.54 200.99 38 540.96 206.39 39 549.17 212.08 40 557.18 218.08 V:nash exp.OUT Page 5 41 564.95 224.37 42 572.50 230.93 43 579.79 237.77 44 586.83 244.87 45 593.61 252.23 46 600.11 259.82 47 606.33 267.65 48 612.26 275.71 49 617.89 283.97 50 623.21 292.44 51 628.22 301.09 52 632.91 309.92 53 637.28 318.92 54 641.31 328.07 55 642.54 331.17 Circle Center At X = 389.5 ; Y = 433.5 and Radius, 273.0 *** 2.506 *** Failure Surface Specified By 56 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 183.33 236.04 2 190.46 229.03 3 197.83 222.27 4 205.45 215.79 5 213.29 209.59 6 221.36 203.68 7 229.64 198.07 8 238.12 192.77 9 246.78 187.78 10 255.62 183.10 11 264.63 178.76 12 273.79 174.74 13 283.08 171.06 14 292.51 167.72 15 302.05 164.73 16 311.70 162.09 17 321.43 159.80 18 331.24 157.87 19 341.12 156.30 20 351.05 155.08 21 361.01 154.23 22 371.00 153.75 23 381.00 153.63 24 390.99 153.87 25 400.98 154.48 26 410.93 155.45 27 420.84 156.79 28 430.69 158.48 29 440.48 160.54 30 450.19 162.95 31 459.80 165.71 32 469.30 168.82 33 478.69 172.27 34 487.94 176.07 35 497.05 180.20 36 506.00 184.66 37 514.78 189.44 38 523.38 194.54 39 531.79 199.95 40 540.00 205.66 41 547.99 211.67 42 555.76 217.96 43 563.30 224.54 44 570.59 231.38 45 577.62 238.49 46 584.39 245.85 47 590.89 253.45 48 597.11 261.28 49 603.04 269.33 50 608.67 277.60 V:nash exp.OUT Page 6 51 613.99 286.06 52 619.01 294.72 53 623.70 303.55 54 628.07 312.54 55 632.11 321.69 56 635.70 330.70 Circle Center At X = 379.3 ; Y = 427.8 and Radius, 274.2 *** 2.519 *** Failure Surface Specified By 65 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 116.67 236.55 2 123.80 229.54 3 131.14 222.75 4 138.69 216.19 5 146.44 209.86 6 154.37 203.78 7 162.48 197.93 8 170.77 192.34 9 179.23 187.00 10 187.85 181.93 11 196.61 177.11 12 205.52 172.57 13 214.57 168.30 14 223.73 164.31 15 233.02 160.61 16 242.42 157.18 17 251.91 154.05 18 261.50 151.20 19 271.17 148.65 20 280.91 146.40 21 290.72 144.44 22 300.58 142.78 23 310.49 141.43 24 320.43 140.38 25 330.40 139.63 26 340.39 139.18 27 350.39 139.05 28 360.39 139.21 29 370.38 139.68 30 380.35 140.46 31 390.29 141.54 32 400.20 142.92 33 410.05 144.61 34 419.86 146.59 35 429.59 148.87 36 439.25 151.45 37 448.83 154.32 38 458.32 157.48 39 467.71 160.93 40 476.98 164.67 41 486.14 168.68 42 495.17 172.97 43 504.07 177.54 44 512.82 182.38 45 521.42 187.48 46 529.86 192.84 47 538.14 198.45 48 546.24 204.32 49 554.15 210.43 50 561.88 216.78 51 569.41 223.36 52 576.74 230.17 53 583.85 237.19 54 590.75 244.44 55 597.42 251.88 56 603.86 259.53 57 610.07 267.37 58 616.03 275.40 59 621.74 283.61 V:nash exp.OUT Page 7 60 627.21 291.98 61 632.41 300.52 62 637.35 309.22 63 642.03 318.06 64 646.43 327.03 65 648.49 331.58 Circle Center At X = 349.9 ; Y = 466.9 and Radius, 327.8 *** 2.575 *** Failure Surface Specified By 60 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 150.00 236.60 2 157.10 229.56 3 164.43 222.76 4 171.99 216.21 5 179.76 209.92 6 187.75 203.90 7 195.93 198.15 8 204.30 192.69 9 212.86 187.50 10 221.58 182.62 11 230.46 178.02 12 239.50 173.74 13 248.67 169.76 14 257.98 166.09 15 267.40 162.74 16 276.93 159.71 17 286.55 157.01 18 296.27 154.63 19 306.06 152.58 20 315.91 150.87 21 325.81 149.49 22 335.76 148.45 23 345.73 147.74 24 355.73 147.37 25 365.73 147.34 26 375.72 147.65 27 385.70 148.29 28 395.65 149.28 29 405.56 150.60 30 415.43 152.25 31 425.23 154.24 32 434.96 156.56 33 444.60 159.20 34 454.15 162.17 35 463.59 165.46 36 472.92 169.07 37 482.11 173.00 38 491.17 177.23 39 500.09 181.77 40 508.84 186.60 41 517.42 191.73 42 525.83 197.15 43 534.05 202.84 44 542.07 208.82 45 549.88 215.06 46 557.48 221.56 47 564.85 228.32 48 571.99 235.32 49 578.89 242.55 50 585.54 250.02 51 591.94 257.71 52 598.07 265.61 53 603.93 273.72 54 609.51 282.01 55 614.81 290.49 56 619.81 299.15 57 624.53 307.97 58 628.94 316.95 59 633.04 326.06 V:nash exp.OUT Page 8 60 634.92 330.65 Circle Center At X = 361.6 ; Y = 442.7 and Radius, 295.4 *** 2.587 *** Failure Surface Specified By 65 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 116.67 236.55 2 123.74 229.47 3 131.03 222.63 4 138.52 216.01 5 146.22 209.62 6 154.11 203.48 7 162.18 197.58 8 170.44 191.94 9 178.87 186.55 10 187.45 181.43 11 196.20 176.58 12 205.09 172.00 13 214.11 167.69 14 223.27 163.67 15 232.54 159.94 16 241.93 156.49 17 251.42 153.33 18 261.00 150.47 19 270.67 147.91 20 280.41 145.65 21 290.22 143.69 22 300.08 142.03 23 309.99 140.68 24 319.93 139.64 25 329.91 138.91 26 339.90 138.49 27 349.90 138.37 28 359.89 138.57 29 369.88 139.07 30 379.85 139.88 31 389.78 141.00 32 399.68 142.43 33 409.53 144.17 34 419.32 146.20 35 429.04 148.54 36 438.69 151.18 37 448.25 154.12 38 457.71 157.35 39 467.07 160.87 40 476.32 164.68 41 485.44 168.78 42 494.43 173.15 43 503.28 177.81 44 511.99 182.73 45 520.54 187.92 46 528.92 193.37 47 537.13 199.08 48 545.16 205.04 49 553.00 211.25 50 560.64 217.69 51 568.09 224.37 52 575.32 231.28 53 582.33 238.41 54 589.12 245.75 55 595.68 253.29 56 602.01 261.04 57 608.09 268.98 58 613.92 277.10 59 619.50 285.40 60 624.82 293.87 61 629.87 302.50 62 634.65 311.28 63 639.16 320.21 64 643.39 329.27 V:nash exp.OUT Page 9 65 644.26 331.29 Circle Center At X = 348.6 ; Y = 461.4 and Radius, 323.1 *** 2.592 *** Failure Surface Specified By 65 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 116.67 236.55 2 123.90 229.64 3 131.34 222.96 4 138.98 216.50 5 146.81 210.28 6 154.82 204.30 7 163.01 198.56 8 171.37 193.08 9 179.89 187.85 10 188.57 182.87 11 197.39 178.17 12 206.35 173.73 13 215.45 169.56 14 224.66 165.67 15 233.99 162.07 16 243.42 158.74 17 252.94 155.70 18 262.56 152.95 19 272.25 150.50 20 282.02 148.33 21 291.84 146.47 22 301.72 144.90 23 311.63 143.63 24 321.59 142.66 25 331.56 141.99 26 341.56 141.62 27 351.56 141.56 28 361.56 141.80 29 371.54 142.34 30 381.51 143.18 31 391.44 144.32 32 401.34 145.76 33 411.18 147.50 34 420.97 149.54 35 430.70 151.87 36 440.35 154.50 37 449.91 157.42 38 459.38 160.62 39 468.76 164.11 40 478.02 167.88 41 487.16 171.93 42 496.18 176.25 43 505.06 180.84 44 513.80 185.70 45 522.39 190.82 46 530.82 196.20 47 539.09 201.83 48 547.18 207.71 49 555.08 213.83 50 562.80 220.19 51 570.33 226.77 52 577.65 233.58 53 584.76 240.61 54 591.66 247.86 55 598.33 255.30 56 604.78 262.95 57 610.99 270.78 58 616.97 278.80 59 622.69 287.00 60 628.17 295.37 61 633.39 303.89 62 638.36 312.58 63 643.05 321.40 64 647.48 330.37 V:nash exp.OUT Page 10 65 648.02 331.55 Circle Center At X = 348.7 ; Y = 472.4 and Radius, 330.8 *** 2.599 *** Failure Surface Specified By 54 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 183.33 236.04 2 190.57 229.14 3 198.05 222.51 4 205.79 216.17 5 213.75 210.12 6 221.94 204.38 7 230.34 198.96 8 238.94 193.85 9 247.72 189.07 10 256.68 184.63 11 265.80 180.53 12 275.07 176.78 13 284.48 173.38 14 294.00 170.34 15 303.64 167.66 16 313.37 165.34 17 323.17 163.40 18 333.05 161.82 19 342.98 160.62 20 352.94 159.80 21 362.93 159.35 22 372.93 159.28 23 382.93 159.59 24 392.91 160.27 25 402.85 161.34 26 412.75 162.77 27 422.58 164.58 28 432.34 166.76 29 442.01 169.31 30 451.58 172.22 31 461.03 175.48 32 470.35 179.11 33 479.53 183.08 34 488.55 187.40 35 497.40 192.05 36 506.07 197.03 37 514.54 202.34 38 522.81 207.97 39 530.86 213.90 40 538.68 220.13 41 546.26 226.66 42 553.59 233.46 43 560.65 240.54 44 567.44 247.88 45 573.95 255.47 46 580.17 263.30 47 586.09 271.36 48 591.70 279.64 49 597.00 288.12 50 601.97 296.80 51 606.61 305.66 52 610.91 314.68 53 614.87 323.87 54 617.01 329.41 Circle Center At X = 369.8 ; Y = 424.0 and Radius, 264.7 *** 2.658 *** Failure Surface Specified By 54 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 183.33 236.04 2 190.41 228.98 3 197.75 222.19 4 205.36 215.70 5 213.21 209.51 V:nash exp.OUT Page 11 6 221.30 203.63 7 229.61 198.07 8 238.14 192.84 9 246.86 187.94 10 255.76 183.40 11 264.84 179.20 12 274.07 175.36 13 283.45 171.89 14 292.96 168.78 15 302.58 166.05 16 312.30 163.70 17 322.10 161.73 18 331.97 160.14 19 341.90 158.94 20 351.87 158.13 21 361.86 157.71 22 371.86 157.68 23 381.85 158.04 24 391.82 158.79 25 401.76 159.94 26 411.64 161.46 27 421.46 163.38 28 431.19 165.67 29 440.82 168.35 30 450.35 171.40 31 459.75 174.82 32 469.00 178.60 33 478.10 182.75 34 487.04 187.24 35 495.79 192.08 36 504.34 197.26 37 512.68 202.77 38 520.81 208.61 39 528.70 214.75 40 536.34 221.20 41 543.72 227.94 42 550.84 234.97 43 557.67 242.27 44 564.22 249.83 45 570.46 257.64 46 576.40 265.69 47 582.01 273.96 48 587.30 282.45 49 592.25 291.14 50 596.86 300.01 51 601.12 309.06 52 605.02 318.27 53 608.55 327.62 54 608.97 328.86 Circle Center At X = 367.6 ; Y = 413.4 and Radius, 255.7 *** 2.702 *** Failure Surface Specified By 56 Coordinate Points Point X-Surf Y-Surf No. (ft) (ft) 1 166.67 236.63 2 173.75 229.57 3 181.09 222.78 4 188.67 216.27 5 196.50 210.04 6 204.54 204.10 7 212.81 198.47 8 221.27 193.14 9 229.93 188.14 10 238.76 183.45 11 247.77 179.10 12 256.93 175.09 13 266.23 171.42 14 275.66 168.09 15 285.21 165.12 16 294.86 162.50 V:nash exp.OUT Page 12 17 304.60 160.24 18 314.42 158.35 19 324.30 156.82 20 334.23 155.65 21 344.20 154.86 22 354.19 154.44 23 364.19 154.38 24 374.19 154.70 25 384.16 155.39 26 394.11 156.44 27 404.01 157.87 28 413.84 159.66 29 423.61 161.81 30 433.29 164.33 31 442.87 167.20 32 452.33 170.42 33 461.67 174.00 34 470.87 177.91 35 479.92 182.17 36 488.81 186.76 37 497.52 191.67 38 506.04 196.90 39 514.36 202.45 40 522.47 208.30 41 530.36 214.44 42 538.01 220.88 43 545.43 227.59 44 552.58 234.58 45 559.48 241.82 46 566.10 249.32 47 572.43 257.05 48 578.48 265.02 49 584.23 273.20 50 589.67 281.59 51 594.79 290.18 52 599.60 298.95 53 604.07 307.89 54 608.21 316.99 55 612.01 326.24 56 613.08 329.14 Circle Center At X = 360.6 ; Y = 424.1 and Radius, 269.7 *** 2.705 *** Operation Plan Nash County C&D Landfill and Horizontal Expansion October 2016 1100 Crescent Green Drive, Suite 208 Cary, North Carolina 27518 • O: 919-792-1900 • F: 866-311-7206 NC FIRM C-2910 This page intentionally left blank OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION i CONTENTS 1.0 INTRODUCTION ....................................................................................................... 1 2.0 CONTACT INFORMATION ....................................................................................... 1 3.0 HOURS OF OPERATION ......................................................................................... 1 4.0 OPERATIONAL DRAWINGS .................................................................................... 1 5.0 WASTE ACCEPTANCE AND DISPOSAL REQUIREMENTS ................................... 1 5.1 AREAS OF SERVICE ............................................................................................ 2 5.2 ACCEPTABLE WASTE ......................................................................................... 2 5.3 PROHIBITED WASTE ........................................................................................... 3 6.0 WASTE SCREENING ............................................................................................... 4 6.1 TRAINING AND DOCUMENTATION OF WASTE SCREENING PERSONNEL .... 4 6.2 NON-DOCUMENTED WASTE SCREENING ........................................................ 5 6.3 DOCUMENTED RANDOM LOAD WASTE SCREENING ..................................... 5 6.4 CONTINGENCY PLAN .......................................................................................... 7 6.5 WASTE SCREENING RECORD KEEPING .......................................................... 7 7.0 ACCESS AND SAFETY REQUIREMENTS .............................................................. 8 7.1 LANDFILL SECURITY ........................................................................................... 8 7.2 LANDFILL OPERATOR ......................................................................................... 8 7.3 ACCESS ROADS .................................................................................................. 9 7.4 ENTRANCE SIGNAGE .......................................................................................... 9 7.5 TRAFFIC SIGNAGE .............................................................................................. 9 7.6 DUST CONTROL .................................................................................................. 9 8.0 DISEASE VECTOR CONTROL ................................................................................ 9 9.0 AIR CRITERIA AND FIRE CONTROL .................................................................... 10 9.1 STATUTORY REQUIREMENT ............................................................................ 10 9.2 OPEN BURNING ................................................................................................. 10 9.3 FIRE FIGHTING EQUIPMENT ............................................................................ 10 9.4 REPORTING ....................................................................................................... 10 OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION ii 10.0 EROSION AND SEDIMENTATION CONTROL REQUIREMENTS ....................... 11 11.0 LANDFILL OPERATIONS ..................................................................................... 11 11.1 INITIAL WASTE PLACEMENT .......................................................................... 11 11.2 WORKING FACE ............................................................................................... 11 11.3 SPREADING AND COMPACTING REQUIREMENTS ...................................... 12 11.4 SPECIAL WASTE MANAGEMENT ................................................................... 13 11.5 YARD WASTE MANAGEMENT ........................................................................ 13 11.6 WHITE GOODS MANAGEMENT ...................................................................... 14 11.7 WASTE TIRES .................................................................................................. 14 11.8 COVER MATERIAL REQUIREMENTS ............................................................. 14 11.9 DRAINAGE CONTROL AND WATER PROTECTION REQUIREMENTS ......... 15 11.10 SEVERE WEATHER CONDITIONS ................................................................ 16 11.10.1 ICE STORMS ............................................................................................ 16 11.10.2 HEAVY RAINS .......................................................................................... 16 11.10.3 ELECTRICAL STORMS ............................................................................ 16 11.10.4 WINDY CONDITIONS ............................................................................... 17 11.10.5 VIOLENT STORMS .................................................................................. 17 11.11 SURVEY FOR COMPLIANCE ......................................................................... 17 12.0 OPERATING RECORD AND RECORDKEEPING REQUIREMENTS .................. 17 APPENDICES APPENDIX A – WASTE SCREENING FORM; FIRE OCCURRENCE NOTIFICATION FORM APPENDIX B – WHITE GOODS PLAN OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 1 of 18 1.0 INTRODUCTION The owner and operator of any C&DLF unit must maintain and operate the unit in accordance with the operation plan. This Operation Plan is to provide guidance to the Operator going forward during operation of the expanded Facility. This Operations Manual was prepared for operations of the Nash County C&D Landfill facility (Permit No. 6403 CDLF). This document discusses the operation of the following: • LCID Processing Area. • C&D Landfill. 2.0 CONTACT INFORMATION Nash County (County, Owner, or Operator) owns and operates the Construction and Demolition Landfill Facility (C&DLF or Facility. The Owner’s contact information is as follows: Landfilll Site Nash County Health Department 3057 Duke Road PO Box 849 Nashville, N.C. 27856 Nashville, N.C. 27856 Phone: (252) 459-9899 Phone: (252) 459-9823 Emergency Response Castalia Volunteer Fire Department 11065 Lancaster Store Rd. Castalia, NC 27816 Phone: (252) 459-4777 For fire or police emergencies, dial 911. 3.0 HOURS OF OPERATION The operating hours of the facility are anticipated to be Monday through Friday from 8:00 a.m. to 4:30 p.m. 4.0 OPERATIONAL DRAWINGS Drawings illustrating the operation of the Horizontal Expansion of the Nash County C&D Landfill are shown on the Facility Plan presented in the Engineering Drawings. 5.0 WASTE ACCEPTANCE AND DISPOSAL REQUIREMENTS A C&DLF must accept only those solid wastes it is permitted to receive. The landfill owner or operator must notify the Division within 24 hours of attempted disposal of any waste OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 2 of 18 the C&DLF is not permitted to receive, including waste from outside the area the landfill is permitted to serve. 5.1 AREAS OF SERVICE The Nash County C&D Landfill will only accept for disposal wastes generated within approved areas of service which includes: • Nash County The landfill owner or operator must notify the Division within 24 hours of attempted disposal of waste from outside the area the landfill is permitted to serve. 5.2 ACCEPTABLE WASTE A C&DLF must accept only those solid wastes it is permitted to receive. Acceptable waste for the Nash County C&D Landfill includes: • Construction and Demolition Debris Waste: (Waste or debris from construction, remodeling, repair, or demolition operations on pavement or other structures, untreated and unpainted wood). • Inert Debris Waste: (Concrete, brick, concrete block, uncontaminated soils and rock, etc.). • Land Clearing Debris: as defined by G.S. 120A-290, specifically, waste that is generated solely from land-clearing activities, such as stumps, trees, etc. • Asphalt: In accordance with G.S. 130-294 (m), demolition debris consisting of used asphalt or used asphalt mixed with dirt, sand, gravel, rock, concrete, or similar nonhazardous material may be used as fill and need not be disposed of in a permitted landfill or solid waste disposal facility. Such demolition debris may not be placed in the waters of the State or at or below the seasonal high water table. • Other Wastes as Approved by the Solid Waste Section of the Division of Waste Management. • Asbestos waste: Managed in accordance with 40 CFR 61, which is hereby incorporated by reference including any subsequent amendments and additions. Copies of 40 CFR 61 are available for inspection at the Department of Environment and Natural Resources, Division of Waste Management. The regulated asbestos waste must be covered immediately with soil in a manner that will not cause airborne conditions and must be disposed of separate and apart from other solid wastes, as follows: OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 3 of 18 A. in a defined isolated area within the footprint of the landfill, or B. in an area not contiguous with other disposal areas. Separate areas must be designated so that asbestos is not exposed by future land- disturbing activities. 5.3 PROHIBITED WASTE The following wastes must not be disposed of in the C&DLF 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)(17a), (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: lamps or bulbs including but not limited to halogen, incandescent, neon or fluorescent; lighting ballast or fixtures; thermostats and light switches; batteries including but not limited to those from exit and emergency lights and smoke detectors; lead pipes; lead roof flashing; transformers; capacitors; and copper chrome arsenate (CCA) and creosote treated woods. OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 4 of 18 (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) The owner or operator of a C&DLF must not knowingly dispose any type or form of C&D waste that is generated within the boundaries of a unit of local government that by ordinance: (A) Prohibits generators or collectors of C&D waste from disposing that type or form of C&D waste. (B) Requires generators or collectors of C&D waste to recycle that type or form of C&D waste. (19) Wastewater treatment sludge. Wastewater treatment sludge must not be accepted for disposal. Wastewater treatment sludge may be accepted, with the approval of the Division, for utilization as a soil conditioner and incorporated into or applied onto the vegetative growth layer. The wastewater treatment sludge must neither be applied at greater than agronomic rates nor to a depth greater than six inches. The landfill owner or operator must notify the Division within 24 hours of attempted disposal of any waste the C&DLF is not permitted to receive. 6.0 WASTE SCREENING 6.1 TRAINING AND DOCUMENTATION OF WASTE SCREENING PERSONNEL Waste screening personnel trained in the following areas: • methods for identification and determination of prohibited wastes, including, but not limited to, regulated hazardous waste, liquid waste, PCBs and banned items. • handling procedures for prohibited wastes, • record keeping requirements of the program, and OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 5 of 18 • occupational health and safety. Documentation of training procedures should include: 1. Date of training 2. A statement asserting that the training included: A. Recognition of regulated hazardous waste, liquid waste, PCBs and banned items. B. Hazardous waste safety precautions as required by the hazardous waste contingency plan. 3. Written acknowledgement of training by facility personnel. 6.2 NON-DOCUMENTED WASTE SCREENING Non-documented waste screening to ensure that hazardous or unacceptable wastes are not disposed in the landfill will be the responsibility of all employees. Each employee will observe vehicles entering the Facility for any potentially prohibited waste and will alert management personnel if any prohibited wastes are suspected. Non-documented waste screening for incoming loads of waste shall be accomplished as follows: • Facility Entrance – Only authorized vehicles and material will be allowed beyond the scales. The scale attendant will refuse entry to any prohibited vehicles or vehicles observed carrying prohibited waste. • Waste Discharge Checkpoints – All incoming loads of waste will be observed by the Facility operators as it is discharged from the waste transport vehicle. • Active Face Checkpoints – Material will be inspected by the landfill operations equipment operator(s) as it is incorporated and compacted at the active face. 6.3 DOCUMENTED RANDOM LOAD WASTE SCREENING In addition to non-documented waste screening performed by the equipment operator/attendants, a documented random load waste screening program shall be implemented to detect and prevent disposal of any of the prohibited wastes listed in previously. Random load waste screening Inspections conducted as part of this program shall be performed by personnel trained in the following areas: • methods for identification and determination of prohibited wastes, • handling procedures for prohibited wastes, • record keeping requirements of the program, and OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 6 of 18 • occupational health and safety. The frequency of the random inspections shall be determined by the quantity and type of waste received, the familiarity with the generators and/or transporters, and the occurrences of identified prohibited waste. Inspections should be performed at least once per week. In order for the waste screening inspections to be random, the time of day, day of week, and transporter/hauler selected for inspection shall also vary between inspections. The procedure for the random load waste screening shall be as follows: • Stop the selected vehicle prior to the working face of the landfill. • Notify the driver of the inspection. • Direct the vehicle to the inspection area. The inspection area may be either a permanently designated location or a temporary location adjacent to the working face. • If possible, perform a visual observation of the waste prior to unloading. If prohibited waste is observed, or suspected, the vehicle shall be prohibited from unloading, and shall be directed out of the facility. • If no prohibited waste is observed or suspected from the visual observation, or if a visual observation is not possible, the vehicle shall discharge the load at the inspection area. The driver shall remain at the inspection area while the inspection is performed, unless a safety concern requires evacuation of the area. Equipment shall be used to spread and turn the waste to facilitate a visual observation of the load contents. If no prohibited waste is identified, the waste shall be transferred to the working face for disposal. • If prohibited waste is identified in the load, and the prohibited waste is not a regulated hazardous waste, a regulated medical waste, a regulated toxic waste, a regulated liquid waste, or a waste which requires special handling, the waste shall be loaded back into the vehicle and removed from the facility. • If acceptability of the waste cannot be determined by visual observation, the waste can either be rejected and loaded back into the vehicle and removed from the facility, or samples of the waste can be taken to determine acceptability. Testing shall be selected based on the reason for the suspicion of unacceptability. • If the waste is suspected of being a liquid waste, a regulated hazardous waste, a regulated medical waste, or a regulated toxic waste, site personnel OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 7 of 18 will safely identify the nature of the prohibited waste. Wastes within these categories are not to be handled by landfill staff. Upon assessment of the waste, qualified contractors will be contacted to provide direction for temporary handling, isolation, and security. Within 24 hours of discovery, the Facility will orally inform NCDENR Division of Waste Management (Division) of the incident and make every effort to contact a waste contractor for the proper packaging, removal, and disposal of the prohibited waste. The Division will be informed in writing of the incident and steps taken to properly dispose of the prohibited waste. • Complete the waste screening form and place in the operating record. 6.4 CONTINGENCY PLAN In the event that identifiable hazardous waste or waste of questionable character is detected at the landfill, appropriate equipment, protective gear, personnel, and materials as necessary will be employed to isolate the wastes. The DWM will be notified immediately that an attempt was made to dispose of hazardous waste at the landfill. If the vehicle attempting disposal of such waste is known, all attempts will be made to prevent that vehicle from leaving the site or, if the vehicle has left the site, immediate notice will be served on the owner of the vehicle that hazardous waste, for which they have responsibility, has been disposed of at the landfill. Nash County C&D Landfill will assist the DWM as necessary and appropriate in the removal and disposition of the hazardous waste and in the prosecution of responsible parties. If needed, the hazardous waste will be covered with either on-site soils or other tarping material 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 will be charged to the owner of the vehicle involved. Any vehicle owner or operator who knowingly dumps hazardous waste in the landfill may be barred from using the landfill. Should an incident where hazardous waste is found at the landfill occur, the event will be documented by landfill staff using the waste screening form provided in Appendix A. Records of information gathered as part of the waste screening programs will be maintained at the landfill site during its active life and as long as required by Nash County C&D Landfill and the DWM. 6.5 WASTE SCREENING RECORD KEEPING The following records must be maintained in the operating record: • Training Certification recognized and approved by the Department, for all applicable personnel. Outline of training of each facility personnel to OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 8 of 18 recognize liquid waste, hazardous waste, PCB waste, and banned items. The operating record should include the following documentation of training: (A) Date(s) of training. (B) A statement asserting that the training includes: 1. Recognition of regulated hazardous waste, liquid waste, PCB waste and banned items. 2. Hazardous waste safety precautions as required by the hazardous waste contingency plan. (C) Written acknowledgment of training by all facility personnel. • Waste screening forms. • Records of unacceptable waste to include: (A) waste quantity, description, and generator information; (B) the state and county in which the solid waste originated; and, (C) the transporters of waste; (D) action(s) taken to protect health and the environment; • All correspondence with haulers and generators regarding load inspections and suspect waste. • All correspondence with the Department regarding receiving of wastes not specifically allowed by the permit. 7.0 ACCESS AND SAFETY REQUIREMENTS 7.1 LANDFILL SECURITY The C&DLF must be adequately secured by means of gates, chains, berms, fences and other security measures approved by the Division to prevent unauthorized entry. The facility is secured by a locking gate at the entrance and fences and natural barriers along the facility boundary. 7.2 LANDFILL OPERATOR In accordance with G.S. 130A-309.25, an individual trained in landfill operations must be on duty at the site while the facility is open for public use and at all times during active waste management operations to ensure compliance with operational requirements. Proof of operator training must be available during inspection. OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 9 of 18 7.3 ACCESS ROADS The access road through the facility to the landfill and access roads to monitoring locations are constructed to provide all-weather traffic. Internal roads are maintained in good condition to provide operation in all-weather scenarios. Access roads will be graded for positive drainage. To not impound water, depressions or potholes occurring shall be addressed swiftly by grading or application of additional stone as necessary to achieve positive drainage off the road. The location of access roads during waste placement will be determined by operations personnel in order to reflect waste placement strategy. 7.4 ENTRANCE SIGNAGE A sign is located at the Facility entrance containing the hours during which the site is open for public use, the permit number, a list of prohibited wastes such as liquid, hazardous and municipal solid waste as being excluded from the C&DLF unit, and other pertinent information specified in the permit conditions. 7.5 TRAFFIC SIGNAGE Signs are positioned at the Facility providing information on disposal procedures and directions to and from the Yard Waste Management Area, White Goods Area, and C&D landfill Working face. The use of portable signs with directional arrows and portable traffic barricades will facilitate the unloading of wastes to the designated disposal locations. These signs and barricades will be placed along the access route to the working face of the landfill or other designated disposal areas which may be established. Speed limits are posted throughout the access road to the disposal unit. 7.6 DUST CONTROL Operations shall endeavor to maintain internal roads free of dust. Typically, a road truck with rear mounted water tank will be used. 8.0 DISEASE VECTOR CONTROL Owners and operators of all C&DLF units must prevent or control on-site populations of disease vectors using techniques appropriate for the protection of human health and the environment. For purposes of this item, "disease vectors" means any rodents, flies, mosquitoes, or other animals or insects, capable of transmitting disease to humans. The Operator will endeavor to prevent and control on-site populations of disease vectors such as rodents, flies, mosquitoes, or other animals or insects, using techniques appropriate for the protection of human health and the environment. Specifically, the Operator will: • Prevent depressions or low areas susceptible to ponding of water; OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 10 of 18 • Store scrap tires directly in trailers; • Provide adequate cover to the disposal units. 9.0 AIR CRITERIA AND FIRE CONTROL 9.1 STATUTORY REQUIREMENT Owners and operators of all C&DLF units must ensure that the units do not violate any applicable requirements developed under a State Implementation Plan (SIP) approved or promulgated by the U.S. EPA Administrator pursuant to Section 110 of the Clean Air Act, as amended. 9.2 OPEN BURNING Except for burning of land clearing debris generated on-site or debris from emergency clean-up operations, when approved, open burning of solid waste at C&DLF facility will not occur. When and if the Operator wishes to burn, prior to any burning a request shall be submitted to the Division for review. The Division will determine the burning to be approved if it is one of the two types of burning as referenced in this subparagraph. A notation of the date of approval and the name of the Division personnel who approved the burning will be included in the Operating Record. 9.3 FIRE FIGHTING EQUIPMENT The Owner shall provide equipment to control accidental fires; the equipment is available at the site at all times. The Facility typically has a road truck with water tanker available and fire extinguishers are provided in all equipment and occupied facilities. Once approved, a copy of the Operations Plan will be filed with the local fire department including all contact information for the facility. 9.4 REPORTING The Owner shall notify the Division within 24 hours in the event of a fire or explosion and provide written notification within 15 days. The Owner will evaluate the cause and circumstances of the event. Written notification to the Division shall include details of the occurrence, the suspected cause of fire or explosion, the response taken to manage the incident, and the action(s) to be taken to prevent the future occurrence of fire or explosion. A copy of the FIRE OCCURRENCE NOTIFICATION form is included in the Appendix. OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 11 of 18 10.0 EROSION AND SEDIMENTATION CONTROL REQUIREMENTS Adequate sediment control measures consisting of vegetative cover, materials, structures or devices must be utilized to prevent sediment from leaving the C&DLF facility. Erosion control measures shall include, but not be limited to the following: (A) Disturbing as little area as practical at any one time for landfilling operations. (B) Seeding and mulching of all disturbed areas commencing as soon as practically possible. Employing erosion netting or sod on steep slopes and other erosion prone areas. (C) Use of earthen berms, hay bales, silt fences, riprap or equivalent devices down- gradient of disturbed areas, stockpiles, around drainage pipes inlets and outlets and at intervals along grassed waterways, until such time as permanent vegetation is established. (D) Placement of riprap at the outlets of storm water piping sedimentation pond discharge pipes. Provisions for a vegetative ground cover sufficient to restrain erosion must be accomplished as directed by appropriate state or local agency upon completion of any phase of C&DLF development consistent with Rule .0543(c)(5). 11.0 LANDFILL OPERATIONS Loads identified at the scalehouse to contain C&D will be directed to the C&D landfill working face. 11.1 INITIAL WASTE PLACEMENT Nash County anticipates constructing the Horizontal Expansion of the Nash County C&D Landfill in multiple phases. The first phase of construction for the Horizontal Expansion of the Nash County C&D Landfill will consist of Phase 4 as shown on the Facility Plan in the Engineering Drawings. Development of subsequent phases is anticipated to be sequential as shown on the Facility Plan. 11.2 WORKING FACE The width and length of the working face will be maintained as small as practical in order to maintain the appearance of the site, control windblown waste, and minimize the amount of cover required each day. Normally, only one working face will be active on any given day, with all deposited waste in other areas covered by either periodic, intermediate, or final cover, as appropriate. OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 12 of 18 The approach 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. Waste transportation vehicles will arrive at the working face at random intervals. Personnel will direct traffic necessary to expedite safe movement of vehicles. 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, a certain number of vehicles will be allowed on the working face at a time. The actual number will be determined by the truck spotter. 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 which will encourage the efficient movement of transportation vehicles to and from the working face, and to expedite the unloading of waste. 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 area. The general public is prohibited from removal activities on the working face. In addition, landfill staff will not remove waste (for recycling or recovery) at the working face. 11.3 SPREADING AND COMPACTING REQUIREMENTS The Owner of the C&DLF shall comply with spreading and compacting requirements as follows: (1) C&DLF units must restrict solid waste into the smallest area feasible. (2) Solid waste must be compacted as densely as practical into cells. (3) Appropriate methods such as fencing and diking must be provided within the area to confine solid waste which is subject to be blown by the wind. At the conclusion of each operating day, all windblown material resulting from the operation must be collected and disposed of by the owner and operator. The Owner will make available durable equipment that performs reliably and safely with a minimum unscheduled service, equipment to provide suitable material handling capability and compaction for the given waste volumes anticipated. At minimum, one (1) 70,000-pound plus machine with a waste handling arrangement and toothed compactor wheels will be available at the working face at all times. OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 13 of 18 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:1V max.) using a landfill compactor and a minimum number of three full passes. 11.4 SPECIAL WASTE MANAGEMENT Nash County C&D Landfill may dispose of asbestos within the C&D landfill unit. Asbestos will only be accepted if it has been processed and packaged in accordance with State and Federal (40 CFR 61) regulations. Asbestos will arrive at the site in vehicles that contain only the asbestos waste and only after advance notification by the generator. Once the hauler brings the asbestos to the landfill, the hauler will be directed to the designated asbestos disposal area by operations personnel. The designated disposal area will be prepared by operations personnel 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 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 will record the approximate location and elevation of the asbestos waste once cover is in-place. The Landfill Manager will then review pertinent disposal and location information to assure compliance with regulatory requirements and enter the information into the Operating Record. Once disposal and recording for asbestos waste is completed, the disposal area may be covered with waste. No excavation into designated asbestos disposal areas will be permitted. 11.5 YARD WASTE MANAGEMENT Nash County accepts yard waste at the designated Yard Waste Management Area indicated on the overall facility plan in the Engineering Drawings. The yard waste material accepted by Nash County consists primarily of tree debris and land clearing debris. High nitrogen yard waste such as grass clippings, leaves, and bush trimmings, while accepted at the Nash County Landfill, represents an insignificant portion of the OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 14 of 18 waste stream, and is distributed throughout the yard waste stockpiles. Composting of yard waste is not performed at the Nash County Landfill. Nash County contracts grinding services as necessary to maintain stockpiles no larger than 30 feet high and 50 feet wide of unlimited length. Ground materials are also maintained in stockpiles no larger than 30 feet high and 50 feet wide of unlimited length. A minimum of 20 feet shall be maintained between individual stockpiles to facility firefighting equipment access. Stockpiles are managed to not create excessive temperatures, attract vectors, or produce objectionable odors. Ground yard waste materials are offered not offered to the public. Ground materials are sold for boiler fuel as market conditions permit. 11.6 WHITE GOODS MANAGEMENT Nash County accepts white goods at the designated white goods area indicated on the overall facility plan in the Engineering Drawings. Nash County’s White Goods Plan is included in Appendix B. 11.7 WASTE TIRES Nash County accepts waste tires at the designated area indicated on the overall facility plan in the Engineering Drawings. 11.8 COVER MATERIAL REQUIREMENTS The Owner of the C&DLF shall comply with cover material requirements as follows: (1) Except as provided in Subparagraph (3) of this Paragraph, the owners and operators of all C&DLF units must cover the solid waste with six inches of earthen material when the waste disposal area exceeds one-half acre and at least once weekly. Cover must be placed at more frequent intervals if necessary to control disease vectors, fires, odors, blowing litter, and scavenging. A notation of the date and time of the cover placement must be recorded in the operating record as specified in Paragraph (n) of this Rule. (2) Except as provided in Subparagraph (3) of this Paragraph, areas which will not have additional wastes placed on them for three months or more, but where final termination of disposal operations has not occurred, must be covered and stabilized with vegetative ground cover or other stabilizing material. (3) Alternative materials or an alternative thickness of cover may be approved by the Division if the owner or operator demonstrates that the alternative material or thickness controls disease vectors, fires, odors, blowing litter, and scavenging without presenting a threat to human health and the environment. OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 15 of 18 A C&DLF owner or operator may apply for approval of an alternative cover material. If approval is given by the Division, approval would extend to all C&DLF units at one specific facility. Nash County plans to utilize Alternative Daily Cover (ADC) consisting of Soil/Mulch Mixture (S&M) mixed at a ratio 50% soil to 50% mulch by volume per DENR guidance document “APPROVED ALTERNATIVE DAILY COVER MATERIALS FOR USE AT SANITARY LANDFILLS”, Document Number 20365, dated January 7, 2014. Specifically: 1. S&M can be mixed at a ratio from 80% soil to 20% mulch up to 50% soil to 50% mulch by volume. 2. During the use of S&M as an ACM, soil cover to a full depth of six inches shall be applied once per week. 3. S&M may not be used for intermediate cover. A copy of the APPROVED ALTERNATIVE DAILY COVER MATERIALS FOR USE AT SANITARY LANDFILLS”, Document Number 20365, dated January 7, 2014 shall be placed in the operating record. 11.9 DRAINAGE CONTROL AND WATER PROTECTION REQUIREMENTS Drainage control and water protection at the facility will consist of the following: (1) Surface water must be diverted from the operational area. (2) Surface water must not be impounded over or in waste. (3) Solid waste must not be disposed of in water. (4) Leachate must be contained on-site or treated prior to discharge. An NPDES permit may be required prior to the discharge of leachate to surface waters. (5) C&DLF units must not: (A) Cause a discharge of pollutants into waters of the United States, including wetlands, that violates any requirements of the Clean Water Act, including the National Pollutant Discharge Elimination System (NPDES) requirements, pursuant to Section 402. (B) Cause the discharge of a nonpoint source of pollution to waters of the United States, including wetlands, that violates any requirement of an area-wide or State-wide water quality management plan that OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 16 of 18 has been approved under Section 208 or 319 of the Clean Water Act, as amended. Waste placement will be performed in a planned sequence to divert stormwater from the operational area (working face) and so that stormwater shall not be impounded in the waste or over any covered area. Depressions in the waste mass shall be addressed with placement of additional cover soil. The design for the Nash County C&DLF and Horizontal Expansion includes drainage ditches as well as four sediment control ponds which are designed to capture sediment laden runoff from unstablized landfill areas prior to discharge to surrounding discharge features. Runoff from areas with well-established vegetation are not required to be routed through the sediment control ponds. 11.10 SEVERE WEATHER CONDITIONS Unusual weather conditions can directly affect the operation of the landfill facility. Some of these weather conditions and recommended operational responses are as follows. 11.10.1 ICE STORMS An ice storm can make access to the landfill dangerous, prevent movement or placement of daily cover, and, thus, may require closure of the landfill until the ice is removed or has melted. 11.10.2 HEAVY RAINS Exposed soil surfaces can create a muddy situation in some portions of the landfill during rainy periods. The control of drainage and use of crushed stone 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, new aggregate should be used for repair. Intense rains can affect newly constructed drainage structures such as swales, diversions, cover soils, and vegetation. After such a rain event, inspection by landfill personnel will be initiated and corrective measures taken to repair any damage found before the next rainfall. 11.10.3 ELECTRICAL STORMS The open area of a landfill is susceptible to the hazards of an electrical storm. If necessary, landfilling activities will be temporarily suspended during such an event. OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 17 of 18 To guarantee the safety of all field personnel, refuge will be taken in the on-site buildings or in rubber-tired vehicles. 11.10.4 WINDY CONDITIONS Wind screens adjacent to the working face may be used as required to control windblown waste. 11.10.5 VIOLENT STORMS In the event of hurricane, tornado, or severe winter storm warning issued by the National Weather Service, landfill operations may be temporarily suspended until the warning is lifted. Daily cover will be placed on exposed waste and buildings and equipment will be properly secured. 11.11 SURVEY FOR COMPLIANCE Within 60 days of the permittee's receipt of the Division's written request, the permittee must cause to be conducted a survey of active or closed portions of unit or units at the facility in order to determine whether operations are being conducted in accordance with the approved design and operational plans. The permittee must report the results of such survey, including a map produced by the survey, to the Division within 90 days of receipt of the Division's request. (1) A survey shall be required by the Division: (A) If there is reason to believe that operations are being conducted in a manner that deviates from the plan listed in the effective permit, or; (B) As a verification that operations are being conducted in accordance with the plan listed in the effective permit. (2) Any survey performed pursuant to this Paragraph must be performed by a registered land surveyor duly authorized under North Carolina law to conduct such activities 12.0 OPERATING RECORD AND RECORDKEEPING REQUIREMENTS The Owner, at a minimum, shall comply with the following recordkeeping requirements: (1) The owner and operator of a C&DLF unit must record and retain at the facility, or in an alternative location near the facility, the following information: (A) records of random waste inspections, monitoring results, certifications of training, and training procedures required by Rule .0544 of this Section; OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 18 of 18 (B) amounts by weight of solid waste received at the facility to include, consistent with G.S. 130A-309.09D, county of generation; (C) any demonstration, certification, finding, monitoring, testing, or analytical data required by Rules .0544 through .0545 of this Section; (D) any closure or post-closure monitoring, testing, or analytical data as required by Rule .0543 of this Section; (E) any cost estimates and financial assurance documentation required by Rule .0546 of this Section; (F) notation of date and time of placement of cover material; and (G) all audit records, compliance records and inspection reports. (3) All information contained in the operating record must be furnished to the Division according to the permit or upon request, or be made available for inspection by the Division. (4) The Operating Record must also include: (A) A copy of the approved Operation Plan required by this Rule and the engineering plan required by Rule .0539 of this Section; (B) A copy of the current Permit to Construct and Permit to Operate; and (C) The Monitoring Plan, in accordance with Rule .0544 of this Section, included as appendices to the Operation Plan. (D) A copy of the document “APPROVED ALTERNATIVE DAILY COVER MATERIALS FOR USE AT SANITARY LANDFILLS”, Document Number 20365, dated January 7, 2014. OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION APPENDIX A WASTE SCREENING FORM FIRE NOTIFICATION FORM OPERATION PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION APPENDIX B WHITE GOODS PLAN 1646 Mail Service Center, Raleigh, NC 27699-1676 Telephone: 919-707-8200 Internet: http://portal.ncdenr.org/web/wm/sw An Equal Opportunity/Affirmative Action Employer – Printed on Dual Purpose Paper North Carolina Department Of Environment And Natural Resources Division of Waste Management Solid Waste Section APPROVED ALTERNATIVE DAILY COVER MATERIALS FOR USE AT SANITARY LANDFILLS Date of Issue: January 7, 2014 Document Number 20365 NOTICE This is a guidance document developed to assist landfills in the selection and use of alternative daily cover materials. It should not be interpreted as a replacement to North Carolina General Statutes or Administrative Code. DENR officials may determine that the guidance is not applicable based on site specific conditions. DENR reserves the right to change this guidance at any time without public notice. Guidance Document History Date Document Number Revision January 7, 2014 20365 Original Issue TABLE OF CONTENTS Introduction .......................................................................................................................... 1 Regulatory Authority and Interpretation ............................................................................. 1 Implementation .................................................................................................................... 2 Compliance ........................................................................................................................... 3 Approved Alternative Daily Cover Material Detail Sheets Automotive Shredder Residuals ................................................................................ 4 Combustion Residuals ............................................................................................... 5 Construction & Demolition Debris Fines .................................................................. 6 Petroleum Contaminated Soils ................................................................................. 7 Spray-applied Mortar Coating ................................................................................... 8 Foam Coating ............................................................................................................. 9 Foundry Sand ............................................................................................................ 10 Soil/Mulch Mixture .................................................................................................... 11 Synthetic Tarps ......................................................................................................... 12 APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 1 January dd, 2014 – DIN nnnnn INTRODUCTION During the 2013 session of the North Carolina General Assembly, Session Law 2013-413 was passed which amended North Carolina General Statute (NCGS) 130A-295.6 concerning the use of alternative cover materials (ACM) as daily cover at sanitary landfills. The statute states that once an ACM has been approved for use by the Department of Environment and Natural Resources (NCDENR) at any sanitary landfill in North Carolina, it may be used at all sanitary landfills within the state. The Solid Waste Section (Section) of the NCDENR Division of Waste Management prepared this guidance document to assist the regulated community in the implementation of the statue. Section staff developed an inventory of ACM approved for use in North Carolina and the summarized the approved operational conditions and application processes for use of the ACM. This information, along with instructions on how to add the use of previously approved ACM to a sanitary landfill operation and permit, is provided. REGULATORY AUTHORITY AND INTERPRETATION Industrial waste landfills (IndLF), construction and demolition solid waste landfills (C&DLF), and municipal solid waste landfills (MSWLF) are all considered sanitary landfills by North Carolina statutes and rules. Previously there was no statutory language regarding daily cover, alternative daily cover or alternative cover materials. However, cover requirements and alternatives based on specific types of sanitary landfills were addressed in the Solid Waste Management Rules - Title 15A Chapter 13, Sub- chapter B of the North Carolina Administrative Code (15A NCAC 13B). The following rule references provide the current requirements which can affect the use of an ACM at a specific type of sanitary landfill. Industrial waste landfills are permitted and operated under Sections .0503, .0504, .0505 and .0510 of the NCAC.  Part .0505(3)(a) specifically states: Solid waste shall be covered after each day of operation, with a compacted layer of at least six inches of suitable cover or as specified by the Division. C&D waste landfills are currently permitted and operated under Sections .0531 through .0547 of the NCAC.  Part .0542(f)(1) states: Except as provided in Subparagraph (3) of this Paragraph, the owners and operators of all C&DLF units must cover the solid waste with six inches of earthen material when the waste disposal area exceeds one-half acre and at least once weekly. Cover must be placed at more frequent intervals if necessary to control disease vectors, fires, odors, blowing APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 2 January dd, 2014 – DIN nnnnn litter, and scavenging. A notation of the date and time of the cover placement must be recorded in the operating record as specified in Paragraph (n) of this Rule.  Part .0542(f)(3) states: Alternative materials or an alternative thickness of cover may be approved by the Division if the owner or operator demonstrates that the alternative material or thickness controls disease vectors, fires, odors, blowing litter, and scavenging without presenting a threat to human health and the environment. A C&DLF owner or operator may apply for approval of an alternative cover material. If approval is given by the Division, approval would extend to all C&DLF units at one specific facility. MSW landfills are currently permitted and operated under Sections .1601 through .1680 of the NCAC.  Part .1626(2)(a) states: Except as provided in Sub-Item (b) of this Item, the owners or operators of all MSWLF units must cover disposed solid waste with six inches of earthen material at the end of each operating day, or at more frequent intervals if necessary, to control disease vectors, fires, odors, blowing litter, and scavenging.  Part .1626(2)(b) states: Alternative materials of an alternative thickness (other than at least six inches of earthen material) may be approved by the Division if the owner or operator demonstrates that the alternative material and thickness control disease vectors , fires , odors , blowing litter, and scavenging without presenting a threat to human health and the environment, in accordance with 40 CFR Part 258.21. A MSWLF owner or operator may apply for a generic approval of an alternative cover material, which would extend to all MSWLF units. IMPLEMENTATION The use of an ACM must be documented in the approved operation plan for the facility. If a facility intends to utilize an ACM that is currently not in their approved operation plan but is included in the ACM summary, they may do so by following one of the following procedures: 1. The facility may elect to use an approved ACM in the manner prescribed in this document. To implement the use of the ACM, the facility owner or operator should place a notice in the facility operating record with the procedure for using the ACM according to the information in this document and send a copy of the notice and procedure to the Permitting Branch Supervisor of the Section and the facilities Environmental Senior Specialist (ESS). The ADC must be incorporated into the facility operation plan and will be listed in the permit at the next permit action. 2. The facility may choose to implement an ACM that has been approved in a manner not prescribed in this document by performing an abbreviated demonstration period. This will allow the operator to tailor the ACM to their specific use, staff, and facility operation. The Section will provide oversight and concurrence to the process. The owner or operator should contact their (ESS) to discuss APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 3 January dd, 2014 – DIN nnnnn the specifications for the testing. At the conclusion of the process, a notice should be placed in the facility operating record with the procedure for using the ACM and a copy of the notice and procedure sent to the Permitting Branch Supervisor of the Section. At the next permit action, the ACM must be incorporated into the facility operation plan and will be listed in the permit. If a facility wishes to use an ACM that has not previously been approved by the Section, the operator must complete a demonstration process. Contact your ESS for assistance. COMPLIANCE Regardless of the method chosen, the Section will ensure compliance with the proper use of the ACM in accordance with the rules, statutes, site specific conditions, and historical precedent. An operator who chooses to implement an ACM as described in choice 1 above will be immediately responsible for compliance and subject to the NCDENR tiered-enforcement process. An operator who chooses option 2 will be subject to enforcement that considers the demonstration nature of the action, with the understanding that changes to the process or ACM will be instituted immediately to correct any issues. ALTERNATIVE DAILY COVER MATERIAL DETAIL SHEET APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 4 January dd, 2014 – DIN nnnnn ACM: Automotive Shredder Residuals (ASR) APPROVED LANDFILL USE: MSWLF, C&DLF (lined)* MATERIAL CHARACTERISTICS: Automotive Shredder Residuals are the fines remaining after scrap cars have passed through a shredder and all recoverable materials have been removed. ASR can consist of glass, synthetic fibers, rubber, plastics, automobile liquids residue, metal fines and dirt. It is possible for the ASR to contain substances considered hazardous such as lead, cadmium and PCB. USAGE CRITERIA: 1. ASR can be applied, in lieu of soil, to a full depth of six inches given calm site (weather) conditions. 2. If site (weather) conditions are, or are forecast to be, windy the ASR must either be: a. Mixed with soil at a ratio of 50% soil with 50% ASR prior to application on the working face, or b. Placed on the working face to a minimum depth of 3” and then covered with soil a minimum depth of 3”. 3. During the use of ASR as an ACM, soil cover to a full depth of six inches shall be applied once per week. 4. ASR shall not be used on any exterior/outside slopes and may not be used for intermediate cover. 5. The ASR must be sourced from within the approved service area of the landfill facility. * A CDLF equipped with a liner system may use the ASR as alternate daily cover only. Use of more than six inches equates to disposal. ASR is not a C&D waste. To dispose of ASP in a lined CDLF, contact the Permitting Branch of the Solid Waste Section for further clarification. ALTERNATIVE DAILY COVER MATERIAL DETAIL SHEET APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 5 January dd, 2014 – DIN nnnnn ACM: Combustion Residuals (CR)/Ash APPROVED LANDFILL USE: : MSWLF, C&DLF (lined)*, IndLF (lined)* MATERIAL CHARACTERISTICS: Combustion Residuals or Ash are, generally, the residuals remaining from the combustion of coal or the incineration of waste materials. The CR/Ash generally consists of fine particles such as fly-ash as well as larger particles similar to sand, gravel or stone. USAGE CRITERIA: 1. CR/Ash can be applied, in lieu of soil, to a full depth of six inches given calm site (weather) conditions. 2. If site (weather) conditions are, or are forecast to be, windy the CR/Ash must either be: a. Mixed with soil at a ratio of 50% soil with 50% CR/Ash prior to application on the working face if it can become airborne or exhibits dust like properties, or b. Placed on the working face to a minimum depth of 3” and then covered with soil a minimum depth of 3” if it can become airborne or exhibits dust like properties. 3. During the use of CR/Ash as an ACM, soil cover to a full depth of six inches shall be applied once per week, unless otherwise approved by the Section*. 4. CR/Ash may not be used for intermediate cover, if it can become airborne or exhibits dust like properties. 5. The CR/Ash must be sourced from within the approved service area of the landfill facility. Warning: Some materials such, as flue gas desulfurization residue, are destined for recycle and cannot be contaminated with soil. Site specific handling practices should be discussed with the Solid Waste Section prior to implementation. * A CDLF or IndLF equipped with a liner system may use the CR as alternate daily cover only. Use of more than six inches equates to disposal. CR is not a C&D waste. To dispose of CR in a lined CDLF, or a non-CCB industrial landfill, contact the Permitting Branch of the Solid Waste Section for further clarification. ALTERNATIVE DAILY COVER MATERIAL DETAIL SHEET APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 6 January dd, 2014 – DIN nnnnn ACM: Construction and Demolition Debris (C&D) Fines APPROVED LANDFILL USE: : MSWLF, C&DLF MATERIAL CHARACTERISTICS: Construction and Demolition Debris Fines are, generally, the residuals and fine particles remaining in the bottom of dumpsters, roll-off containers and trucks used in the transportation or processing of C&D debris. USAGE CRITERIA: 1. C&D Fines can be applied, in lieu of soil, to a full depth of six inches given calm site (weather) conditions. 2. If site (weather) conditions are, or are forecast to be, windy the C&D Fines must either be: a. Mixed with soil at a ratio of 50% soil with 50% C&D Fines prior to application on the working face, or b. Placed on the working face to a minimum depth of 3” and then covered with soil a minimum depth of 3”. 3. During the use of C&D Fines as an ACM, soil cover to a full depth of six inches shall be applied once per week. 4. C&D Fines shall not be used on any exterior/outside slopes and may not be used for intermediate cover. 5. The C&D Fines must be sourced from within the approved service area of the landfill facility. Warning: C&D fines can contain large percentages of drywall dust or gypsum. These materials may produce significant amounts of hydrogen sulfide, an obnoxious smelling compound. If odor problems develop, the use of the fines should be suspended immediately and the offending area covered with soil. ALTERNATIVE DAILY COVER MATERIAL DETAIL SHEET APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 7 January dd, 2014 – DIN nnnnn ACM: Petroleum Contaminated Soils (PCS) APPROVED LANDFILL USE: : MSWLF, C&DLF (lined)*, IndLF (lined)* MATERIAL CHATRACTERISTICS: Petroleum Contaminated Soils are, generally, native soils contaminated with some petroleum liquid. Generally, these soils are be sourced from environmental cleanup sites, spill sites or sites associated with above ground or underground storage tank (AST or UST) removal. In the case of ACM usage, petroleum is narrowly defined as the low to medium boiling point petroleum derived fuels such as gasoline, kerosene, diesel, motor oil, mineral spirits and fuel oils #11 through #6. All other petroleum derived liquids such as solvents, acids, tars and asphalts are excluded. In all cases, the concentration of Total Petroleum Hydrocarbons (TPH) in the PCS cannot exceed 3,000 parts per million (PPM) regardless of type or test method. The material may not contain chlorinated solvents or other hazardous materials or exhibit the hazardous characteristic of flammable. USAGE CRITERIA: 1. PCS can be applied, in lieu of soil, to a full depth of six inches. 2. The PCS must be stockpiled within a disposal area and shall be managed and applied in such a way that runoff cannot leave the lined landfill area. 3. The PCS shall be managed in such a way to prevent run-off and fugitive emissions (i.e. use of tarps, berms and/or wetting to prevent blowing). 4. PCS is prohibited from disposal. Therefore, the facility may not accept more PCS than can be used in a 45 day period. The amount of PCS accepted should not exceed 20% of the permitted facility average monthly waste stream. 5. PCS shall not be used on any exterior/outside slopes and may not be used for intermediate cover. 6. The PCS must be sourced from within the approved service area of the landfill facility. 7. PCS can only be used at lined landfill facilities. 8. Records must be maintained in the facility operating record indicating the volume of PCS accepted and applied at the facility on a daily basis. * A CDLF or IndLF equipped with a liner system may use the PCS as alternate daily cover only. Use of more than six inches equates to disposal. PCS is neither a C&D nor an Industrial waste. To dispose of PCS in a lined CDLF, or a non-CCB industrial landfill, contact the Permitting Branch of the Solid Waste Section for further clarification. ALTERNATIVE DAILY COVER MATERIAL DETAIL SHEET APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 8 January dd, 2014 – DIN nnnnn ACM: Spray-applied Mortar Coating (SMC) APPROVED LANDFILL USE: : MSWLF, C&DLF, IndLF MATERIAL CHARACTERISTIC: SMC is, generally, a commercially sourced non-flammable, non-toxic product containing proprietary components including mix setting agents, reinforcing materials and cement. Other components, such as latex paint, may also be added to the mixture. All of the components are generally mixed on site with water and/or leachate to produce slurry that is then spray-applied to the working face. USAGE CRITERIA: 1. SMC can be applied, in lieu of soil, given appropriate site (weather) conditions. 2. SMC must be applied in accordance with the manufacturers’ application guidelines. 3. SMC must be applied in two directions to ensure adequate coverage. 4. During the use of SMC as an ACM, soil cover to a full depth of six inches shall be applied once per week unless otherwise approved by the Section. 5. The use of non-hazardous latex or water based paint in the mixture is approved provided that the paint has been collected for recycling. ALTERNATIVE DAILY COVER MATERIAL DETAIL SHEET APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 9 January dd, 2014 – DIN nnnnn ACM: Foam Coating (Foam) APPROVED LANDFILL USE: MSWLF, C&DLF, IndLF MATERIAL CHARACTERISTICS: Foam Coating is, generally, a commercially sourced non-flammable, non-toxic, non-hardening water based product. The proprietary liquid concentrate is delivered to the site and diluted with water prior to application with proprietary equipment. USAGE CRITERIA: 1. Foam can be applied, in lieu of soil, given appropriate site (weather) conditions. 2. Foam must be applied in accordance with the manufacturers’ application guidelines. 3. During the use of Foam as an ACM, soil cover to a full depth of six inches shall be applied once per week. 4. Foam shall not be used on any exterior/outside slopes and may not be used for intermediate cover. ALTERNATIVE DAILY COVER MATERIAL DETAIL SHEET APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 10 January dd, 2014 – DIN nnnnn ACM: Foundry Sand (Sand) APPROVED LANDFILL USE: MSWLF, C&DLF (lined)*, IndLF (lined)* MATERIAL CHARACTERISTICS: Foundry Sand is, generally, a by-product of the smelting and forging processes for metals fabrication. Metal pieces and particulate may also be found in the sand. Prior to use, a Toxicity Characteristic Leaching Procedure (TCLP) analysis must be performed to ensure no hazardous constituents are found in the sand at the source. The TCLP analysis results must be submitted with the Operation Plan revision. USAGE CRITERIA: 1. Sand can be applied, in lieu of soil, to a full depth of six inches. 2. The Sand must be stockpiled within a disposal area and shall be managed and applied in such a way that runoff cannot leave the lined landfill area. 3. The Sand shall be managed in such a way to prevent run-off and fugitive emissions (i.e. use of tarps, berms and/or wetting to prevent blowing). 4. Sand is prohibited from disposal. Therefore, the facility may not accept more Sand than can be used in a 45 day period. The amount of Sand accepted should not exceed 20% of the permitted facility average monthly waste stream. 5. Sand shall not be used on any exterior/outside slopes and may not be used for intermediate cover. 6. The Sand must be sourced from within the approved service area of the landfill facility. 7. Sand can only be used at lined landfill facilities. 8. Records must be maintained in the facility operating record indicating the volume of Sand accepted and applied at the facility on a daily basis. * A CDLF or IndLF equipped with a liner system may use the sand as alternate daily cover only. Use of more than six inches equates to disposal. Sand is not a C&D waste. To dispose of sand in a lined CDLF, a lined landfill not previously permitted to accept it or a non-CCB industrial landfill, contact the Permitting Branch of the Solid Waste Section for further clarification. ALTERNATIVE DAILY COVER MATERIAL DETAIL SHEET APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 11 January dd, 2014 – DIN nnnnn ACM: Soil/Mulch Mixture (S&M) APPROVED LANDFILL USE: MSWLF, C&DLF, IndLF MATERIAL CHARACTERISTICS: Soil/Mulch Mixture is, generally, a mixture of native soils and wood mulch generated from the grinding of yard trash, land clearing debris and pallets constructed of unpainted and untreated natural wood. Additionally, shredded tire chips may be used in addition to, or in lieu of, wood mulch. USAGE CRITERIA: 1. S&M can be applied, in lieu of soil, to a full depth of six inches. 2. S&M can be mixed at a ratio from 80% soil to 20% mulch up to 50% soil to 50% mulch by volume. 3. During the use of S&M as an ACM, soil cover to a full depth of six inches shall be applied once per week. 4. S&M may not be used for intermediate cover. ALTERNATIVE DAILY COVER MATERIAL DETAIL SHEET APPROVED ALTERNATIVE DAILY COVER MATERIALS Page 12 January dd, 2014 – DIN nnnnn ACM: Synthetic Tarps (Tarps) APPROVED LANDFILL USE: MSWLF, C&DLF, IndLF MATERIAL CHARACTERISTICS: Synthetic Tarps are, generally, a commercially sourced non-flammable, non-toxic, sheet product constructed of an impermeable synthetic polymer typically reinforced with fibers. Acceptable sheet products include, but are not limited to, geotextiles, polyethylene membranes, plastic film, tarps and composite geotextile/plastic membranes. Tarps may be applied by hand, using landfill equipment and/or an Automatic Tarping Machine (ATM). USAGE CRITERIA: 1. Tarps can be applied, in lieu of soil, given appropriate site (weather) conditions. 2. Tarps must cover the entire working face. Any waste not covered by tarps must be covered by soil. 3. Tarps must be secured in place with the use of soils or other ballast system such as tires or sand bags. 4. During the use of Tarps as an ACM, soil cover to a full depth of six inches shall be applied once per week. 5. Tarps shall not be used on any exterior/outside slopes and may not be used for intermediate cover. Construction Quality Assurance (CQA) Plan Nash County C&D Landfill and Horizontal Expansion October 2016 1100 Crescent Green Drive, Suite 208 Cary, North Carolina 27518 • O: 919-792-1900 • F: 866-311-7206 NC FIRM C-2910 This page intentionally left blank CONSTRUCTION QUALITY ASSURANCE (CQA) PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page i CONTENTS 1.0 INTRODUCTION ....................................................................................................... 1 2.0 RESPONSIBILITIES AND AUTHORITIES ................................................................ 1 2.1 OWNER ................................................................................................................. 1 2.2 PERMITTING AGENCY ........................................................................................ 1 2.3 ENGINEER ............................................................................................................ 2 2.4 CQA OFFICER ...................................................................................................... 2 2.5 QUALITY ASSURANCE LABORATORY ............................................................... 2 2.6 CONTRACTOR ..................................................................................................... 2 2.7 SURVEYOR........................................................................................................... 2 3.0 INSPECTION ACTIVITIES ........................................................................................ 2 3.1 LANDFILL CELL SUBGRADE CONSTRUCTION ................................................. 3 3.2 FINAL COVER CAP CONSTRUCTION ................................................................. 3 4.0 SAMPLING STRATEGIES ........................................................................................ 4 5.0 DOCUMENTATION ................................................................................................... 4 5.1 SUMMARY REPORT ............................................................................................ 4 5.2 OBSERVATION LOGS AND TEST DATA SHEETS ............................................. 5 5.3 PROBLEM IDENTIFICATION AND SOLUTION REPORTS .................................. 5 5.4 PHOTOGRAPHIC REPORTING DATA SHEET (CQA) ......................................... 6 5.5 CQA REPORT ....................................................................................................... 6 6.0 PROGRESS AND TROUBLESHOOTING MEETINGS. ............................................ 7 6.1 PRE CONSTRUCTION CONFERENCE ............................................................... 7 6.2 PROGRESS MEETINGS ....................................................................................... 7 6.3 PROBLEM OR WORK DEFICIENCY MEETING ................................................... 7 APPENDIX A – TECHNICAL SPECIFICATIONS This page intentionally left blank CONSTRUCTION QUALITY ASSURANCE (CQA) PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 1 of 8 1.0 INTRODUCTION The CQA plan describes the observations and tests that will be used before, during, and upon completion of construction of the proposed 15.8-acre Horizontal Expansion Horizontal Expansion of the existing 11.3-acre Nash County C&DLF to ensure that the construction and materials meet the design specifications and the construction and certification requirements set forth in Rule .0540. This CQA plan also describes the procedures to ensure that the integrity of the landfill systems will be maintained prior to waste placement. Rule 15A NCAC 13B .0541 specifies that the construction quality control and quality assurance (CQA) plan contain at a minimum: (1) Responsibilities and authorities. (2) Inspection activities. (3) Sampling strategies. (4) Documentation. (5) Progress and troubleshooting meetings. Each of these requirements is discussed below. 2.0 RESPONSIBILITIES AND AUTHORITIES The principal parties involved in the CQA Plan for the landfill facility include the Owner, Permitting Agency, Engineer, CQA Officer, Quality Assurance Laboratory, Contractor, and Surveyor. The general responsibilities, authorities and qualifications, as applicable, of each of these parties are described in the following paragraphs. The responsibility and/or authority of a given party may be modified or expanded as dictated by specific project needs during the Pre-construction Conference. The changes shall be incorporated into the CQA Plan prior to construction. 2.1 OWNER The Owner is responsible for the facility and compliance with the permit and associated permit conditions. 2.2 PERMITTING AGENCY The Permitting Agency is the North Carolina Department of Environmental Quality, Division of Waste Management. The North Carolina Department of Environmental Quality, Division of Waste Management has the responsibility and authority to review and accept or reject design revisions or requests for variance submitted by the Owner. CONSTRUCTION QUALITY ASSURANCE (CQA) PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 2 of 8 2.3 ENGINEER The Engineer shall be a Professional Engineer licensed by the State of North Carolina. The Engineer is responsible for approving all design and specification changes, clarify inconsistencies or contradictions in the construction and contract documents or the CQA Plan, reviewing and approving shop drawings, and other tasks as required to support construction and closure of the landfill. 2.4 CQA OFFICER The CQA Officer shall be a Professional Engineer licensed by the State of North Carolina and is responsible for preparing the CQA Report documenting CQA activities (observation and testing). The CQA Officer may be the Engineer. The CQA Officer may assign technically qualified personnel to the project, including an on-site CQA Resident Project Representative (RPR) as needed to for observation and testing as required to satisfy the requirements of this CQA Manual. 2.5 QUALITY ASSURANCE LABORATORY The Quality Assurance Laboratory is a qualified laboratory, independent of the Contractor, with experience in performing laboratory tests in accordance with the CQA Manual. The Quality Assurance Laboratory shall be responsible for conducting the appropriate laboratory tests as directed by the CQA Officer and. The Quality Assurance Laboratory shall demonstrate that it follows the standard test methods listed in the specifications and maintains the appropriate, calibrated equipment to perform the tests. 2.6 CONTRACTOR The Contractor is experienced in performing for the construction of excavation and/or back of landfill subgrade and/or landfill final cover cap systems. The Contractor shall be responsible for the quality of the materials and installation of the materials in conformance with the contract documents. 2.7 SURVEYOR The Surveyor is responsible for certifying that landfill disposal cell construction has reached the permitted design grades. The Surveyor shall be a Registered Land Surveyor, licensed by the State of North Carolina. 3.0 INSPECTION ACTIVITIES Inspection activities will be required for landfill cell subgrade construction and final cap construction. CONSTRUCTION QUALITY ASSURANCE (CQA) PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 3 of 8 3.1 LANDFILL CELL SUBGRADE CONSTRUCTION Inspection activities for Landfill Cell Subgrade Construction will include, but not be limited to: • Proofrolling of areas requiring compacted embankment to reach design grades to document areas are stable. • Recommending and observing techniques utilized to repair areas failing proofroll inspections. • Observing compacted embankment construction to confirm that embankment is placed with appropriate soil materials, lift thicknesses, density, and moisture. • Testing to document in-situ or modified soils make up the upper two feet of cell subgrade design elevations consist of the following: SC, SM, ML, CL, MH, or CH soils per Unified Soil Classification System. • Reviewing survey point locations and elevations of completed subgrade areas as prepared by the Surveyor. 3.2 FINAL COVER CAP CONSTRUCTION Inspection activities for Final Cover Cap Construction will include, but not be limited to: • Proofrolling of areas for soil liner construction to document areas are stable. • Recommending and observing repair techniques utilized to repair areas failing proofroll inspections. • Observing construction to confirm that surface preparations (e.g. wetting, drying, scarification, etc.) are completed prior to placement of subsequent layers. • Observing construction to confirm that soil liner construction and erosion layer construction utilizes suitable soil materials. • Observing and testing to confirm that soil liner and erosion layer are placed with appropriate lift thicknesses, density, and moisture. • Observing and testing to ensure Hydraulic Conductivity tests are completed at specified intervals. • Observing constructed cap component thickness, including surveys and thickness checks as necessary. • Observing vegetation stabilization of Final Cover Cap area. CONSTRUCTION QUALITY ASSURANCE (CQA) PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 4 of 8 4.0 SAMPLING STRATEGIES The quality control/quality assurance testing anticipated for the work and the type and frequency of such testing is included in the Technical Specifications included in Appendix A. 5.0 DOCUMENTATION Documentation procedures shall include the following documents: • Summary Report from the field • Observation Logs and Test Data Sheets. • Construction Problem and Solution Report. • Photographic Reporting Data Sheets. 5.1 SUMMARY REPORT Summary reports shall be prepared by the CQA Officer and/or their designated representative in the field and shall include the following information: • An identifying sheet number for cross referencing and document control; • Date, project day, project name, location, and other identification; • Data on weather conditions; • Reports on any meetings held and their results; • A reduced scale site plan showing all proposed work areas and test locations; • Descriptions and locations of ongoing construction; • Descriptions and specific locations of areas, or units, of work being tested and/or observed and documented; • Locations where tests and samples were taken or reference to specific observation logs and/or test data sheets where such information can be found; • A summary of field/laboratory test results or reference to specific observation log and/or test data sheets; • Calibrations or recalibrations of test equipment and actions taken as a result of recalibration, or reference to specific observation logs and/or test data sheets; • Off-site materials received, including quality and quantity verification documentation; CONSTRUCTION QUALITY ASSURANCE (CQA) PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 5 of 8 • Decisions made regarding approval of units of material or of work, and/or corrective actions to be taken in instances of substandard quality; • The CQA Officer and his/her on-site representative's signature as applicable. 5.2 OBSERVATION LOGS AND TEST DATA SHEETS All observations, and field and/or laboratory tests, shall be recorded on project specific logs and data sheets. Recorded observations may take the form of notes, charts, sketches, photographs, or any combination of these. Where possible, a checklist may be useful to ensure that no pertinent factors of a specific observation are overlooked. At a minimum, the logs and data sheets shall include the following information: • An identifying sheet numbered for cross referencing and document control; • Date, project name, location, and personnel involved in the inspection activity. • Description or title of activity monitored; • Location of inspection activity and locations of samples collected; • Type of inspection activity; procedure used (reference to standard method when appropriate); • Results of laboratory tests received; • Results of monitoring activity in comparison to specifications; and • The CQA monitor's signature as applicable. 5.3 PROBLEM IDENTIFICATION AND SOLUTION REPORTS A problem is defined herein as material or workmanship that does not meet the specified design. Problem Identification and Solution Reports shall be cross referenced to specific observation logs (or daily filed reports) and test data sheets (or summary tables). The report shall include the following information: • An identifying sheet number for cross referencing and document control; • A detailed description of the situation or deficiency; • The location and probable cause of the situation or deficiency; • How and when the situation or deficiency was found or located; Documentation of the response to the situation or deficiency; • Final results of any responses; CONSTRUCTION QUALITY ASSURANCE (CQA) PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 6 of 8 • Any measures taken to prevent a similar situation from occurring in the future; and • The signature of the Engineer. The Owner shall be made aware of any significant recurring nonconformance with the permit specifications. The Engineer shall then determine the cause of the non- conformance and recommend appropriate changes in procedures or specifications. Any changes will be submitted to the Owner for approval. When this type of evaluation is necessary, the results shall be documented and any revision to procedures or permit specifications will be approved by the Owner, Engineer, and, if necessary, the Permitting Agency. 5.4 PHOTOGRAPHIC REPORTING DATA SHEET (CQA) Photographic reporting data sheets, where used, shall be cross referenced with observation logs and test data sheets and/or construction problem and solution reports. Photographic reporting data sheets shall include the following information: • A unique identifying number on data sheets and photographs for cross referencing and document control; • The size, scale, and orientation of the subject matter photographed; Location and description of the work; • The purpose of the photograph; • The name of the photographer and concurrence of the CQA Officer's representative. These photographs will serve as a photographic record of work progress, issues, and corrective measures. They should be kept in a permanent protective file in the order in which they were taken. 5.5 CQA REPORT At a minimum, the CQA Report will contain the items as listed in Rule .0541 (c) and (d)(4) and include: • Summary reports of all construction activities; • Observation logs, test data sheets and test results and summary tables including sample location maps and supporting field and laboratory tests results; • Construction issues and solutions reports; CONSTRUCTION QUALITY ASSURANCE (CQA) PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 7 of 8 • Record surveys shall include scale plans depicting the location of the construction and details pertaining to the extent of construction (e.g., depths, plan dimensions, elevations, soil component thicknesses, etc.). Record surveys signed by a Registered Land Surveyor, licensed by the State of North Carolina. • A summary statement sealed and signed by a Professional Engineer licensed in the State of North Carolina; and • All approvals or certifications pertinent to the landfill project. 6.0 PROGRESS AND TROUBLESHOOTING MEETINGS. To achieve a high degree of quality during construction and to assure a final product that meets all project requirements, clear, open channels of communication are essential; it is essential that lines of communication are open and active in addition to conducting regular project meetings at the site. 6.1 PRE CONSTRUCTION CONFERENCE A Pre construction conference shall be held prior to commencement of the work. At a minimum, the meeting shall include the Owner, Engineer, CQA Officer, Contractor (Project Manager and Superintendent), as applicable. The Permitting Agency will be notified of the meeting will attend as deemed appropriate. The meeting will include, but not be limited to, a review of the project site, project documents, modifications of these documents, the responsibilities and duties of each party, lines of authority and communication, the construction work plan, the proposed schedule and critical path, a discussion of the procedures and schedule for periodic reporting for testing and construction activities, testing protocols, locations of soils, stockpiling, etc.. The Contractor shall present and distribute schedules at the meeting. 6.2 PROGRESS MEETINGS At minimum, monthly progress meeting shall be held between the Owner, Engineer, CQA Officer, Contractor, and other involved parties. Weekly or bi weekly progress meetings will be held as needed. Those attending will discuss current progress, planned activities for the next week, and new business or revisions to the work. The Engineer will log problems, decisions, or questions arising at this meeting. Minutes of these meeting will be submitted by the Engineer to the Owner for approval and distributed to the appropriate parties within 5 workdays from the meeting. 6.3 PROBLEM OR WORK DEFICIENCY MEETING A special meeting shall be held when and if a problem or work deficiency is present or likely to occur. At a minimum, the meeting shall be attended by the Owner, CONSTRUCTION QUALITY ASSURANCE (CQA) PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 8 of 8 Engineer, CQA Officer, Contractor. 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 alternate solutions; and • Implement an action plan to resolve the problem or deficiency. The Engineer shall document the meeting and minutes shall be transmitted to the parties involved. CONSTRUCTION QUALITY ASSURANCE (CQA) PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION APPENDIX A October 2016 02200-1 SECTION 02200 EXCAVATION, BACKFILL, AND COMPACTION PART 1: GENERAL 1.01 SCOPE OF WORK A. Furnish all labor, materials, equipment and incidentals necessary to perform all excavation, backfill, compaction and grading required to complete the work shown on the Drawings and specified herein. The work shall include, but not necessarily be limited to excavation, backfilling, grading, compaction, disposal of waste and surplus materials, placing crushed stone, construction of berms, and all related work such as sheeting, bracing and de-watering. B. All excavation, trenching, and related sheeting, bracing, etc. shall comply with the requirements of OSHA excavation safety standards 29 CFR Part 1926.650 Subpart P and State requirements. Where conflict between OSHA and State regulations exists, the more stringent requirements shall apply. C. Excavated topsoil and excess cut material will be stockpiled in locations approved by the OWNER. 1.02 RELATED WORK A. Section 01050: Field Engineering B. Section 01410: Construction Quality Assurance / Quality Control Plan C. Section 02100: Site Preparation D. Section 02276: Erosion and Sedimentation Control E. Section 02985: Stabilization 1.03 SUBMITTALS A. A signed certification letter, with all necessary permits, that the source is in full compliance with State, County and local laws and regulations for each source. B The CONTRACTOR shall furnish a representative sample weighing approximately 75 pounds of each fill material, stone and crushed stone to the CQA Officer for approval, at least 15 calendar days prior to the date of anticipated use of such material. C. Excavation support designs, if necessary, shall be prepared by a licensed professional engineer, registered in the State of North Carolina, having a October 2016 02200-2 minimum of five years of professional experience in the design and construction of excavation support systems. D. De-watering and drainage system designs, if required, shall be prepared by a licensed professional engineer, registered in the State of North Carolina, having a minimum of five years of professional experience in the design and construction of dewatering and drainage systems. 1.04 QUALITY ASSURANCE A. Owner shall employ a CQA Officer and Quality Assurance Laboratory to perform soils observation and testing services for quality assurance of the fill material. 1.05 PROTECTION A. Sheeting and Bracing (if required) 1. Furnish, put in place and maintain such sheeting and bracing as may be required by Federal, State and local safety requirements to support the sides of excavations; to prevent any movement which could in any way diminish the width of the excavation below that necessary for proper construction; and to protect adjacent structures from undermining or other damage. If the Engineer is of the opinion that at any location sufficient or proper supports have not been provided, he/she may order additional supports put in, and compliance with such order shall not relieve or release the Contractor from his/her responsibility for the sufficiency of such supports. Care shall be taken to prevent voids outside of the sheeting, but if voids are formed, they shall be immediately filled and rammed. Where soil cannot be properly compacted to fill a void, lean concrete shall be used as backfill. All voids shall be filled to the satisfaction of the CQA Officer. 2. Construct the sheeting outside the neat lines of the foundation, unless indicated otherwise, to the extent deemed desirable for the method of operation. Sheeting shall be plumb and securely braced and tied in position. Sheeting and bracing shall be adequate to withstand all pressures to which the structure or trench will be subjected. Any movement or bulging which may occur shall be corrected to provide the necessary clearances and dimensions. 3. All sheeting and bracing shall be carefully removed in such manner as not to endanger the construction or other structures, utilities, or property. All voids left or caused by withdrawal of sheeting shall be immediately re-filled with sand, which must be approved by the CQA Officer, by ramming with tools especially adapted to that purpose, or otherwise as may be directed. October 2016 02200-3 4. The right of the CQA Officer to order sheeting and bracing left in place shall not be construed as creating any obligation on his/her part to issue such orders and his/her failure to exercise his/her right to do so shall not relieve the Contractor from liability for damages to persons or property occurring from or upon the work occasioned by negligence or otherwise, growing out of a failure on the part of the Contractor to leave in place sufficient sheeting and bracing to prevent any caving or moving of the ground. 5. No sheeting is to be withdrawn if driven below mid-diameter of any pipe and under no circumstances shall any sheeting be cut off at a level lower than 1-ft above the top of any pipe. B Drainage and De-watering 1. Dewatering shall be performed as specified during the excavation of organics and unstable soils from the site. Limited dewatering may be required during the excavation and filling of ponds, ditches and where the topsoil layer extends below the water table. 2. At all times during construction provide and maintain proper equipment and facilities to remove all water entering excavations and keep such excavations dry so as to obtain a satisfactory undisturbed subgrade condition until the fills, structures or pipes to be built thereon have been completed to such extent that they will not be floated or otherwise damaged by allowing water into the excavated areas. Groundwater shall be lowered to at least 1 foot below the bottom of excavations. 3. De-watering shall at all times be conducted in such a manner as to preserve the undisturbed bearing capacity of the subgrade soils at proposed bottom of excavation. Well or sump installations shall be constructed with proper sand filters to prevent drawing of finer grained soil from the surrounding ground. 4. Surface runoff shall be collected, drained to sumps and pumped from the disposal unit to maintain an excavation bottom free from standing water. 5. De-watering of ponds or ditches filled with water shall be performed in such a manner as to control discharge water by use of sediment basins and/or check dams or other erosion control structures approved by NCDENR. 6. Take all additional precautions to prevent uplift of any structure during construction. 7. Drainage shall be disposed of so that flow or seepage back into the excavated area will be prevented. October 2016 02200-4 8. Flotation shall be prevented by maintaining a positive and continuous operation of the dewatering system. The Contractor shall be fully responsible and liable for all damages which may result from failure of this system. 9. Remove the dewatering equipment after the system is no longer required. 10. Take all necessary precautions to preclude the accidental discharge of fuel, oil, etc in order to prevent adverse effects on groundwater or surface water quality. C. SLOPE STABILITY 1. The Contractor shall be solely responsible for the stability of roadway embankments, unbalanced fills, stockpiles, and all other construction operations. 1.06 SOIL TESTING A. Previous to the placement of the fill and during such placement, the CQA Officer may select areas within the limits of the fill for testing. The Contractor shall cooperate fully in obtaining the information desired. PART 2: PRODUCTS 2.01 MATERIALS A. Materials for use as fill shall be as described below. The Contractor shall notify the CQA Officer of the source of each material. On-site borrow areas may be utilized with prior approval from the Owner. Off-site materials shall be furnished as required from approved off-site sources (see 1.03.A) and hauled to the site. All local, state and federal regulations shall apply. The Contractor shall submit copies of all applicable permits and approval to the Owner prior to commencement of the work. B. Backfill shall consist of mineral soil free from organic materials, loam, wood, trash and other objectionable materials which may be compressible or which cannot be properly compacted. Common fill shall not contain stones larger than 4 inches in largest diameter and shall have at least 60 percent passing the No. 4 sieve, a maximum of 60 percent passing No. 200 Sieve, a maximum liquid limit of 60, and a maximum plasticity index of 25. Common Fill shall not contain granite blocks, broken concrete, masonry rubble or other similar materials. It shall have physical properties such that it can be readily spread and compacted during filling. Snow, ice and frozen soil will not be permitted. Common Fill shall be compacted to at least 95% of the standard Proctor (ASTM D698) maximum dry density or as otherwise shown on the drawings. October 2016 02200-5 C. Select Fill shall be as specified above for Backfill except that the material shall contain no stones larger than two inches in largest dimension, a maximum of 50 percent passing the No. 200 Sieve, a maximum liquid limit of 50 and a maximum plasticity index of 15. Select Fill shall be compacted to 98% of the standard Proctor (ASTM D698) maximum dry density. D. The soils shall be wetted or dried as necessary so that the moisture content during compaction is within 3% of the optimum moisture content as determined by ASTM D698. E. Highly micaceous and elastic silts shall not be used for Common, Select Fill or Structural Fill. F. Crushed Stone 1. All crushed stone shall be silica material that is sound, hard, durable, resistant to weathering, as defined by ASTM D2488 and shall be free of overburden, spoil, shale, limestone and organic material. The stone shall be free of deleterious materials such as flat, elongated, friable, decomposed, or micaceous pieces. Broken pieces of concrete, asphalt, or brick are not acceptable. Crushed stone shall be of the size and type shown on the drawings. G. Not used. H. Not used. 2.02 CONFORMANCE TESTING Conformance testing shall be performed by the Quality Assurance Laboratory on samples from each source of backfill material. Material identified for use as backfill shall be tested at the frequency specified in Table 1 and at every change in the material, identified by the CQA Officer: TABLE 1 Test Method Frequency Visual Classification ASTM D2488 Every 10,000 cy Grain Size ASTM D422 Every 10,000 cy Atterberg Limits ASTM D4318 Every 10,000 cy Moisture/Density ASTM D698 Every 20,000 cy Natural Moisture ASTM D2216 Every 10,000 cy October 2016 02200-6 Results of the tests will be submitted to the Owner within 24 hours of test completion. The CQA Officer reserves the right to reject material based on the results of the conformance tests. PART 3: EXECUTION 3.01 GENERAL EXCAVATION A. General Excavation is expected to consist of removing unsuitable soils identified during proofrolling (Section 3.01.E) and as required as part of the work represented on the Drawings (Grading Plan). The bottom of the excavations shall be rendered firm and dry and in all respects acceptable to the CQA Officer. B. Excavation and de-watering shall be accomplished by methods that preserve the undisturbed state of subgrade soils. Soils which become soft, loose, "quick", or otherwise unsatisfactory for support of structures, earthen or man-made, as a result of inadequate excavation, de-watering, proofrolling, or other construction methods shall be removed and replaced as required by the CQA Officer at the Contractor's expense. C. De-watering shall lower the groundwater to at least 1-foot below excavation subgrade and prevent "boiling" condition or detrimental underseepage at the base of the excavation as specified herein. D. Excavation equipment shall be satisfactory for carrying out the work in accordance with the Specifications. E. Proofroll exposed subgrades after stripping topsoil and organics with a minimum of two complete passes of a rubber tired heavy vehicle as approved by the CQA Officer. All proofrolling shall be conducted in the presence of the CQA Officer or designated representative. The CQA Officer may require excavation and replacement or other remediation as necessary to provide a firm, stable subgrade in areas that appear to be rutting, pumping, or otherwise appear unstable while proofrolling. The repair procedure shall be determined by the CQA Officer. 3.02 TRENCH EXCAVATION A. Excavation for all trenches required for the installation of pipes shall be made to the depths indicated on the Drawings and in such a manner and to such widths as will give suitable room for laying the pipe within the trenches, for bracing and supporting the trench sides and for pumping and drainage facilities. Contractor shall render the bottom of the excavations firm and stable and in all respects acceptable to the CQA Officer. October 2016 02200-7 B. The trench may be excavated by machinery to, or just below the designated subgrade provided that the material remaining in the bottom of the trench is not disturbed. C. Where pipe is to be installed in fill, fill shall be placed and compacted to at least 2 ft. above the top of the pipe (rough grade elevation) and then trenches re-excavated for pipe installation. 3.03 MISCELLANEOUS EXCAVATION A. The Contractor shall perform all excavations necessary for the placing of seeding and plants, for constructing roadways, and any other miscellaneous earth excavation required under this Contract. 3.04 GENERAL BACKFILL A. Materials placed in fill areas shall be placed to the lines and grades shown on the Drawings. Unless otherwise specified, Common Fill shall be used for backfill. B. Fill shall be placed in accordance with the Contract Document. C. Material conforming to the requirements of Backfill shall be placed in layers having a maximum compacted thickness of 8-inches measured before compaction and shall be compacted to at least 95 percent of its maximum density as determined by ASTM D698. The minimum frequency of testing shall be 1 test per lift per 10,000 square feet or as directed by the CQA Officer in irregular-shaped fill areas. CQA personnel shall perform testing of Backfill. D. The surfaces of filled areas shall be graded to smooth true lines, conforming to grades indicated on the grading plan and no soft spots or un-compacted areas will be allowed in the work. E. No compacting shall be done when the material is covered with frost or is frozen or is too wet either from rain or from excess application of water. At such times, work shall be suspended until the previously placed and new materials have thawed and/or dried sufficiently to permit proper compaction. F. All backfill shall be placed at a moisture content within 3% of Standard Proctor (ASTM D698) optimum moisture content. 3.05 TRENCH BACKFILL A. Backfilling over pipes shall begin as soon as practicable after the pipe has been laid, jointed, and inspected. All backfilling shall be performed expeditiously. October 2016 02200-8 1. Backfill shall be placed around the lower half of the pipe and thoroughly rodded and tamped to fill all voids and provide uniform support of the pipe in the bedding zone. Backfill shall be thoroughly compacted by machine tamping in 6-inch layers as required to provide 98% of the Standard Proctor maximum dry density per ASTM D-698. 2. Backfill shall be placed around the upper half of the pipe and to a minimum depth of 12-inches over the top of the pipe. Backfill shall be thoroughly compacted by machine tamping in 6-inch layers as required to provide 98% of the Standard Proctor maximum dry density per ASTM D- 698. 3. The remainder of the trench shall be backfilled with Backfill in loose layers not to exceed 8-inches and thoroughly compacted with mechanical tampers as required to obtain the specified 95% compaction. 4. Backfilling under haunches shall be performed manually by tamping rods or similar hand equipment to eliminate voids underneath sides of the pipe or haunch. 5. The minimum frequency for density tests shall be 1 test per lift per 50 feet of trench for all material types or as specified by the CQA Officer. CQA personnel shall perform testing of Trench Backfill 3.06 ROAD SUBGRADE A. The road subgrade for bituminous, concrete, and crushed stone pavement areas in fill sections shall consist of a two-foot thick layer of Backfill compacted to a minimum 98% of the Standard Proctor maximum dry density per ASTM D- 698. CQA personnel shall perform testing of Road Subgrade Backfill. B. The road subgrade for bituminous, concrete, and crushed stone pavement areas in cut sections shall consist of firm natural soils as approved by the CQA Officer. C. Road subgrades shall be proofrolled as described in Section 02200, 3.01 E. 3.07 HANDLING OF SURPLUS MATERIAL A. Excavated materials shall not be removed from the site except as specified by the Owner. Materials shall be neatly stockpiled on-site at locations directed by the Owner. Excess materials shall be compacted and stockpiled in accordance with the contractor’s fill placement plan. Contractor shall provide erosion and sedimentation control measures as shown on the drawings and specified in the Contract Documents. 3.08 GRADING October 2016 02200-9 A. Grading in preparation for placing soil liner material shall be performed to the elevations shown and otherwise as directed by the Engineer. During the process of grading, the subgrade shall be maintained in such condition that it will be well drained at all times. When required, temporary drains and drainage ditches shall be installed to intercept or divert surface water that may affect the performance or condition of the work. B. If at the time of grading it is not possible to place material in its final location, it shall be stockpiled in approved areas. Stockpiled material shall be placed, compacted and smooth-rolled at the end of each day to deter water infiltration. No extra payment will be made for the stockpiling or double handling of excavated material. C. Engineer reserves the right to make minor adjustments in lines or grades if deemed necessary as the work progresses, in order to obtain satisfactory construction. D. Stones or rock fragments larger than 3-inches in their greatest dimensions will not be permitted in the top 6-inches of the finished subgrade of all fills or embankments. 3.09 INSPECTION/TESTING A. The CQA Plan – Inspection and testing will be a joint effort between the Owner, Contractor, and the Engineer. B. Construction QA observation, inspection and testing – Owner shall employ a CQA Officer and Quality Assurance Laboratory to perform soils observation and confirmation testing services for quality assurance of the fill material. C. Coordination – Owner shall be responsible for coordination of field services with the CQA Officer and Quality Assurance Laboratory. D. Initial Observation – Compacted fill and backfill operations shall be performed after the surface has been properly prepared and has been observed and approved by CQA Officer. No Compacted fill shall be placed unless the CQA Officer approves the operation. Any fills placed without CQA Officer’s observation and prior approval shall be removed in a manner to avoid damage or disturbance to the existing approved work, and the excavation shall be filled as specified herein. E. Field Control – The minimum testing frequencies for field tests to be performed by the Quality Assurance personnel are identified in Sections 3.04, 3.05, and 3.06. The intent of the field tests is to insure that the specified density and moisture contents are being obtained. October 2016 02200-10 One-point compaction tests shall be performed to interpolate between laboratory compaction (ASTM D 698) curves for at least every 5 in-place density tests or per change in material. The one-point compaction tests shall be performed on either the field density test sample or soil from a location immediately adjacent to the field density test sample, using the ASTM D 698 procedure. The results of the one-point tests shall then be compared with the full compaction curves of similar soils to estimate the maximum dry density applicable to the field density test sample. Note: A nuclear density test gauge can be used to provide the required density testing. However, the in-situ density shall be determined using the sand cone method (ASTM D 1556) and/or the drive cylinder method (ASTM D 2937) of a minimum of one test per ten nuclear density tests or one per day, whichever is greater. The sand cone and/or drive cylinder test should be performed at the same location as a nuclear density test. The sand cone and/or drive cylinder tests shall be continued until a correlation between the density and moisture contents obtained by the nuclear density gauge and the sand cone and/or drive cylinder tests has been demonstrated. F. The CQA Officer shall provide a final Construction Quality Assurance Report at the end of the project. The report shall certify that the work associated with Excavation, Backfill and Compaction was performed in accordance with the Contract Documents and be prepared and sealed by a Professional Engineer registered in the State of North Carolina. The report shall include a narrative of construction methods and QA procedures employed, summary tables of all field test results, including locations and notations regarding any re-work performed, identification of failed tests, and documentation of re-worked areas with passing tests, as appropriate. END OF SECTION Closure Plan Nash County C&D Landfill and Horizontal Expansion October 2016 1100 Crescent Green Drive, Suite 208 Cary, North Carolina 27518 • O: 919-792-1900 • F: 866-311-7206 NC FIRM C-2910 This page intentionally left blank CLOSURE PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION i CONTENTS 1.0 INTRODUCTION ....................................................................................................... 1 2.0 DESCRIPTION OF THE CAP SYSTEM .................................................................... 1 3.0 LARGEST AREA REQUIRING THE SPECIFIED CAP SYSTEM.............................. 2 4.0 MAXIMUM INVENTORY OF WASTES ON-SITE ...................................................... 2 5.0 SCHEDULE FOR COMPLETING ALL CLOSURE ACTIVITIES................................ 2 5.1 INITIATING CLOSURE .......................................................................................... 2 5.2 COMPLETING CLOSURE ..................................................................................... 2 5.3 NOTIFICATION OF CLOSURE COMPLETION ..................................................... 3 5.4 RECORDATION OF CLOSURE. ........................................................................... 3 6.0 COST ESTIMATE FOR CLOSURE ACTIVITIES ...................................................... 3 TABLES TABLE 1 ENGINEER'S OPINION OF COST - CLOSURE COSTS FOR PHASES 1 – 9 This page intentionally left blank CLOSURE PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 1 of 3 1.0 INTRODUCTION Rule 15A NCAC 13B .0543 specifies the Closure Plan, at a minimum, must include the following information: (1) a description of the cap system and the methods and procedures to be used to install the cap that conforms to the requirements set forth in Paragraph (c) of this Rule; (2) an estimate of the largest area of the C&DLF unit requiring the specified cap system at any time during the active life that is consistent with the drawings prepared for: (A) the operation plan for an existing C&DLF unit, or (B) the engineering plan or facility plan for a lateral expansion or new C&DLF unit; (3) an estimate of the maximum inventory of wastes on-site over the active life of the landfill facility; (4) a schedule for completing all activities necessary to satisfy the closure criteria set forth in Paragraph (c) of this Rule; and (5) the cost estimate for closure activities as required under Rule .0546 of this Section. Each of these requirements is discussed below. 2.0 DESCRIPTION OF THE CAP SYSTEM The cap system will consist of the following components: (1) a minimum 18 inches of 1.0 x 10-5 cm/sec earthen material low-permeability barrier; and (2) a minimum of 18 inches of earthen material that is capable of sustaining native plant growth. The final cover surface will be vegetated upon completion of the final cover installation according to the project seeding specifications. (3) a gas venting or collection system to minimize pressures exerted on the low- permeability barrier. (4) surface water control devices including terrace berms and downdrain pipes. The final cover system will be placed on prepared intermediate cover at a maximum slope of 4H:1V. The minimum slope of the top of the landfill shall be a minimum of 5%. CLOSURE PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 2 of 3 Construction quality assurance requirements for final cover system components can be found in the CQA Plan. Final cover system details are shown on the Engineering Drawings. 3.0 LARGEST AREA REQUIRING THE SPECIFIED CAP SYSTEM The largest area of the C&DLF unit requiring the specified cap system at any time during the active life of the proposed 15.8-acre Horizontal Expansion of the existing 11.3-acre Nash County C&DLF is estimated to be approximately 27-acres. 4.0 MAXIMUM INVENTORY OF WASTES ON-SITE The maximum inventory of wastes on-site over the active life of the existing 11.3-acre Nash County C&DLF and proposed 15.8-acre Horizontal Expansion is estimated to be a gross capacity (bottom of waste to top of final cover) of approximately 2,406,234 cubic yards, which equates to approximately 847,400 tons of waste. 5.0 SCHEDULE FOR COMPLETING ALL CLOSURE ACTIVITIES 5.1 INITIATING CLOSURE The owner and operator must begin closure activities for that portion of each C&DLF unit meeting one or more of the following requirements, unless an extension has been granted by the Division. Extensions beyond the deadline for beginning closure may be granted by the Division if the owner or operator demonstrates that the portion of the C&DLF unit has the capacity to receive additional wastes and the owner and operator has taken and will continue to take all steps necessary to prevent threats to human health and the environment from the unclosed C&DLF unit: (A) No later than 30 days after the date on which the C&DLF unit receives the known final receipt of wastes; (B) No later than 30 days after the date that a 10 acre or greater area of waste, is within 15 feet of final design grades; or (C) No later than one year after the most recent receipt of wastes, if the C&DLF unit has remaining capacity. Prior to beginning closure of each C&DLF unit as specified above, an owner or operator must notify the Division that a notice of the intent to close the unit has been placed in the operating record. 5.2 COMPLETING CLOSURE The owner and operator of all C&DLF units must complete closure activities of each C&DLF unit in accordance with the closure plan within 180 days following the CLOSURE PLAN NASH COUNTY C&D LANDFILL AND HORIZONTAL EXPANSION Page 3 of 3 beginning of closure as specified in Subparagraph (5) of this Paragraph. Extensions of the closure period may be granted by the Division if the owner or operator demonstrates that closure will, of necessity, take longer than 180 days and they have taken and will continue to take all steps to prevent threats to human health and the environment from the unclosed C&DLF unit. Within 30 days of completion of Closure Cap Construction, a Closure Cap CQA report prepared in accordance with of the CQA Plan, Section 3.2 FINAL COVER CAP CONSTRUCTION, and submitted to the Department. 5.3 NOTIFICATION OF CLOSURE COMPLETION Following closure of each C&DLF unit, the owner or operator must notify the Division that a certification, signed by the project engineer verifying that closure has been completed in accordance with the closure plan, has been placed in the operating record. 5.4 RECORDATION OF CLOSURE. Following closure of all C&DLF units, the owner or operator must record a notation on the deed to the landfill facility property at the local county Register of Deeds office, or some other instrument that is normally examined during title search, and notify the Division that the notation has been recorded and a copy has been placed in the operating record. The notation on the deed shall in perpetuity notify any potential purchaser of the property that the land has been used as a C&DLF unit or facility and its use is restricted under the closure plan approved by the Division. 6.0 COST ESTIMATE FOR CLOSURE ACTIVITIES A copy of the Closure Estimate is included in Table 1-1. Item Description Estimated Quantity Unit Unit Price FY '14 $'s Extended Total FY '14 $'s Comments 1 Surveys and Layout 27 AC 800.00$ 21,600.00$ G&M Historic Estimate 2 Temporary Erosion Controls 1.0 LS 1,000.00$ 1,000.00$ Borrow Site Only 3 12" Intermediate Cover Placement 8,000 CY 5.00$ 40,000.00$ On-site Material 4 Fine-Grade Intermediate Cover 27.00 AC 1,500.00$ 40,500.00$ G&M Historic Estimate 5 18" Thick 1 x10 -5 cm/sec Clay Liner Purchase 65,340 CY -$ -$ On-site Material 6 18" Thick 1 x10 -5 cm/sec Clay Liner Haul & Place 65,340 CY 5.00$ 326,700.00$ On-site Material 7 18" Thick Vegetative Soil Layer Purchase 65,340 CY -$ -$ On-site Material 8 18" Thick Vegetative Soil Layer Haul & Place 65,340 CY 3.00$ 196,020.00$ On-site Material 9 Terrace Berms Soil Purchase 32,400 CY -$ -$ On-site Material - 300 LF Berm /AC Closure * 4 CY soil/LF berm 10 Terrace Berms Soil Haul & Place 32,400 CY 3.00$ 97,200.00$ On-site Material - 300 LF Berm /AC Closure * 4 CY soil/LF berm 11 Turf Reinforcement Matting on Terrace Berms 31,500 SY 4.50$ 141,750.00$ 300 LF berm/Ac * 35 SF matting /LF Berm 12 24" DIA. Corrugated HDPE Downdrain Pipe 1,350 LF 40.00$ 54,000.00$ 50 LF downdrain /Acre Closure 13 Gas System - Shallow Gas Vent 27.0 EA 2,000.00$ 54,000.00$ 1 LFG well per acre 14 Energy Dissapator 7.0 EA 4,000.00$ 28,000.00$ 1 Dissapator/ 4AC 15 Seeding & Mulching 27.0 AC 1,500.00$ 40,500.00$ G&M Historic Estimate 16 Bonds, Insurance, Mobilization 4.00%of Items Above 41,650.80$ G&M Historic Estimate Subtotal - Construction 1,082,920.80$ $40,108 per acre 1 Construction Documents & Bidding 1.0 EA 25,000.00$ 25,000.00$ Per Each Occurance (Assumes 1) 2 Field Monitoring 810 HR 75.00$ 60,750.00$ 30 hrs/Ac 3 Lab Testing 27.0 AC 2,500.00$ 67,500.00$ G&M Historic Estimate 4 Engineering Certification 1.0 EA 15,000.00$ 15,000.00$ Per Each Occurance (Assumes 1) 5 Deed Notation 1.0 EA 2,000.00$ 2,000.00$ Per Each Occurance (Assumes 1) Subtotal - Engineering and CQA 170,250.00$ $6,306 per acre Total Closure Cost FY '14 $'s 1,253,170.80$ $46,414 per acre TABLE 1 ENGINEER'S OPINION OF COSTS CLOSURE COSTS FOR PHASES 1 - 9 Nash County C&D Landfill (NC SW Permit No. 6403) Construction Engineering & CQA Post-Closure Plan Nash County C&D Landfill and Horizontal Expansion October 2016 1100 Crescent Green Drive, Suite 208 Cary, North Carolina 27518 • O: 919-792-1900 • F: 866-311-7206 NC FIRM C-2910 This page intentionally left blank POST-CLOSURE PLAN NASH COUNTY C&D LANDFILL AND HORZONTAL EXPANSION i CONTENTS 1.0 INTRODUCTION ....................................................................................................... 1 2.0 MONITORING AND MAINTENANCE ACTIVITIES ................................................... 1 3.0 RESPONSIBLE PERSON CONTACT ....................................................................... 2 4.0 PLANNED USES DURING THE POST-CLOSURE PERIOD ................................... 2 5.0 COST ESTIMATE FOR POST-CLOSURE ACTIVITIES ........................................... 3 TABLES TABLE 1-1 - ENGINEER'S OPINION OF COSTS 30-YR POST-CLOSURE FOR PHASES 1-9 This page intentionally left blank POST-CLOSURE PLAN NASH COUNTY C&D LANDFILL AND HORZONTAL EXPANSION Page 1 of 3 1.0 INTRODUCTION Rule 15A NCAC 13B .0543 specifies the Post-closure Plan, at a minimum, must include the following information: 1) A description of the monitoring and maintenance activities required for each C&DLF unit, and the frequency at which these activities must be performed; 2) Name, address, and telephone number of the person or office responsible for the facility during the post-closure period; 3) A description of the planned uses of the property during the post-closure period. Post-closure use of the property must not disturb the integrity of the cap system, base liner system, or any other components of the containment system, or the function of the monitoring systems unless necessary to comply with the requirements in this Section. The Division may approve disturbance if the owner or operator demonstrates that disturbance of the cap system, base liner system, or other component of the containment system, including any removal of waste, will not increase the potential threat to human health or the environment; and 4) The cost estimate for post-closure activities required under Rule .0546 of this Section. Each of these requirements is discussed below. 2.0 MONITORING AND MAINTENANCE ACTIVITIES The closed unit will be examined annually by the responsible party for a minimum of a 30 year post-closure period to ensure the integrity and effectiveness of the final cover system, surface water systems, groundwater monitoring system, landfill gas system, and to protect human health and the environment to include: • Examination of the security control devices for signs of deterioration or vandalism to ensure warning signs are legible and access is limited to authorized persons. • Examination of the access roads to ensure access to the site and all monitoring points for inspection and maintenance purposes. • Examination of the final cover system for signs of settlement, subsidence, and displacement or breaches to the final cover system components, erosion damage, and lack of vegetative cover. • Examination of Run-On/Run-Off Control Structures drainage swales and channels for signs of clogged or damaged structures, including recessed down piping components. POST-CLOSURE PLAN NASH COUNTY C&D LANDFILL AND HORZONTAL EXPANSION Page 2 of 3 • Examination of Landfill Gas Control System for signs of accumulation of liquids (condensate, leachate, water), binding or corrosion. • Examination of Groundwater Monitoring System for signs of well tampering, and cracking or degradation of the concrete pad. • Examination of benchmark for signs of tampering and degradation. A report of findings, including recommendations for actions deemed necessary to ensure the site continues to meet the post-closure performance standard will be made to the responsible party and will be placed in the operating record. If corrective actions are required to ensure the site continues to meet the post-closure performance standard, a report of any corrective actions undertaken and certifications by a registered engineer the closure plan has been followed will be placed in the operating record. At the end of the post closure period, the individual certifications will be compiled into a final document and forwarded to the DWM. Groundwater Monitoring and Surface Water Monitoring will conducted at the closed unit two times per year by the responsible party for a minimum of a 30 year post-closure period. Gas Monitoring will conducted at the closed unit four times per year by the responsible party for a minimum of a 30 year post-closure period. 3.0 RESPONSIBLE PERSON CONTACT All correspondence and questions concerning the post-closure care of the unit should be directed to: Landfilll Site Nash County Health Department 3057 Duke Road PO Box 849 Nashville, N.C. 27856 Nashville, N.C. 27856 Phone: (252) 459-9899 Phone: (252) 459-9823 4.0 PLANNED USES DURING THE POST-CLOSURE PERIOD After filling operations cease at the landfill and the landfill is officially closed in accordance with the Closure Plan, the landfill will be maintained as a grassy hill. Nash County Landfill will maintain control of the property and prevent public access to it during the post-closure period. POST-CLOSURE PLAN NASH COUNTY C&D LANDFILL AND HORZONTAL EXPANSION Page 3 of 3 5.0 COST ESTIMATE FOR POST-CLOSURE ACTIVITIES A copy of the Post Closure Estimate is included in Table 1-1. It e m De s c r i p t i o n Ev e n t To t a l FY ' 1 4 $ ' s Total Annual Costs FY '14 $'s 1 A d m i n i s t r a t i o n / R e c o r d k e e p i n g 4 0 H r s 1 0 0 . 0 0 $ / H r 4 , 0 0 0 . 0 0 $ 1 / Y r 4 , 0 0 0 . 0 0 $ 2 G r o u n d w a t e r M o n i t o r i n g 8 E a 1 , 0 0 0 . 0 0 $ / E a 8 , 0 0 0 . 0 0 $ 2 / Y r 1 6 , 0 0 0 . 0 0 $ 3 S u r f a c e W a t e r M o n i t o r i n g 2 E a 1 , 0 0 0 . 0 0 $ / E a 2 , 0 0 0 . 0 0 $ 2 / Y r 4 , 0 0 0 . 0 0 $ 4 G a s M o n i t o r i n g 1 1 E a 1 0 0 . 0 0 $ / E a 1 , 1 0 0 . 0 0 $ 4 / Y r 4 , 4 0 0 . 0 0 $ 5 M o w i n g 2 7 A c 1 0 0 . 0 0 $ / A c 2 , 7 0 0 . 0 0 $ 1 / Y r 2 , 7 0 0 . 0 0 $ 6 S t o r m w a t e r S t r u c t u r e s M a i n t e n a n c e 1 E a 2 , 0 0 0 . 0 0 $ / E a 2 , 0 0 0 . 0 0 $ 1 / Y r 2 , 0 0 0 . 0 0 $ 7 F i n a l C o v e r S y s t e m R e p a i r 1 A c 5 , 0 0 0 . 0 0 $ / A c 5 , 0 0 0 . 0 0 $ 1 / Y r 5 , 0 0 0 . 0 0 $ To t a l A n n u a l P o s t C l o s u r e C o s t F Y ' 1 4 $ ' s 3 8 , 1 0 0 . 0 0 $ Re m a i n i n g Y e a r s 3 0 To t a l P o s t C l o s u r e C o s t 1 , 1 4 3 , 0 0 0 . 0 0 $ Un i t Pr i c e Pe r E v e n t FY ' 1 4 $ ' s Es t i m a t e d Ev e n t Qu a n t i t y An n u a l Ev e n t s TA B L E 2 EN G I N E E R ' S O P I N I O N O F C O S T S 30 Y R P O S T C L O S U R E F O R P H A S E S 1 - 9 NA S H C O U N T Y C & D L A N D F I L L ( N C S W P e r m i t N o . 6 4 0 3 ) GAS CONTROL PLAN Horizontal Expansion of the Nash County C&D Landfill October 2016 1100 Crescent Green Drive, Suite 208 Cary, North Carolina 27518 • O: 919-792-1900 • F: 866-311-7206 This page intentionally left blank GAS CONTROL PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL i TABLE OF CONTENTS TABLE OF CONTENTS ................................................................................................... I GAS CONTROL PLAN ......................................................................................... 1 ROUTINE MONITORING PLAN ........................................................................... 1 EXPLOSIVE GAS CONCENTRATION LIMITS .................................................... 1 FIELD MEASUREMENT PROTOCOL .................................................................. 2 REPORTING ......................................................................................................... 3 CORRECTIVE ACTIONS ...................................................................................... 3 APPENDIX A – LFG MONITORING FORM TABLE 1 - LFG PROBE ID AND COORDINATES FIGURE 1 – LFG PROBE LOCATIONS GAS CONTROL PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 1 of 3 GAS CONTROL PLAN Rule 15A NCAC 13B .0544 (d) requires a gas control plan that ensures: (A) The concentration of methane gas or other explosive gases generated by the facility does not exceed 25 percent of the lower explosive limit (LEL) in on-site facility structures (excluding gas control or recovery system components). (B) The concentration of methane gas or other explosive gases does not exceed the lower explosive limit for methane or other explosive gases at the facility property boundary; and (C) The facility does not release methane gas or other explosive gases in any concentration that can be detected in offsite structures. Routine Monitoring Plan Rule 15A NCAC 13B .0544 (d)(2) requires owners and operators of C&DLF units to implement a routine gas control monitoring program to ensure that the explosive gas concentration standards are met. Table 1 shows the coordinates of landfill gas monitoring wells associated with Horizontal Expansion of the Nash County C&D Landfill. Figure 1 shows the locations of landfill gas monitoring wells associated with Horizontal Expansion of the Nash County C&D Landfill. The landfill gas monitoring wells are located based on soil conditions, the hydrogeologic conditions under and surrounding the facility, hydraulic conditions on and surrounding the facility, the location of facility structures and property boundaries, and the location of all off-site structures adjacent to property boundaries. The landfill gas monitoring wells shall be monitored quarterly. Explosive Gas Concentration Limits The operator shall ensure that the concentration of explosive gases generated by the facility does not exceed 25% of the corresponding lower explosive limit (LEL) in on-site facility structures. Further, the operator of the C&D landfill shall ensure that the concentration of explosive gases does not exceed 100% of the corresponding LEL at the facility property boundary. GAS CONTROL PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 2 of 3 Rule 15A NCAC 13B .0544 (d)(5) defines “lower explosive limit” as “the lowest percent by volume of a mixture of explosive gases in air that will propagate a flame at 25°C and atmospheric pressure”. The explosive gases typically associated with C&D landfills, and the corresponding LEL at the stated conditions are as follows: Explosive Gas Lower Explosive Limit (LEL) On-site Facility Structures Facility Property Boundary Methane 5% 25% LEL 100% LEL Hydrogen Sulfide 4% 25% LEL 100% LEL Field Measurement Protocol A landfill gas monitoring unit capable of measuring methane and hydrogen sulfide concentrations as a percent of total atmospheric gases shall be used to measure explosive gas concentrations at each of the existing gas control probe locations and facility structures. Corresponding values of the percent of atmospheric carbon dioxide and the percent of atmospheric oxygen will likewise be documented. No laboratory sampling or analysis will be conducted under this plan. Landfill Gas Analyzer Calibration Calibration of the landfill gas analyzer is critical to obtaining accurate sampling results. Immediately prior to conducting field measurements, the landfill gas analyzer will be calibrated according to the manufacturer’s recommendations in an area expected to be free of. Calibration of the unit should be performed immediately prior to beginning routine monitoring, and in no case greater than 12 hours before sampling. Occupied Structures Readings Permanent structures are constructed on a concrete slab-on-grade or elevated on a crawlspace. Structures containing a crawlspace or otherwise open area between the structure and ground surface will be monitored. Reading for occupied structures with a slab-on-grade will be made inside the structures with the landfill gas analyzer’s probe as high from the floor as practical. Readings will be recorded when the gas analyzer has reached equilibrium and the readout has stabilized. GAS CONTROL PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 3 of 3 Gas Probe Readings The pump within the landfill gas analyzer is sized to allow the meter to rapidly purge the typical probe casing. Readings for the existing landfill gas probes will be made by first connecting the analyzer probe to the well casing with the shutoff valve in the open position. Positive connection of the probe to the quick-connect attachment should be checked to see that the opportunity for ambient air to be drawn into the analyzer is minimized. Readings will be recorded when the analyzer has reached equilibrium and the readout has stabilized. Reporting Quarterly gas control monitoring results shall be submitted to NCDENR on the form attached at the end of this Plan. Corrective Actions Rule 15A NCAC 13B .0544 (d)(5) specifies the corrective action requirements if methane gas levels exceeding the limits specified in Subparagraph (d)(1) are detected. 1) Immediately take all necessary steps to ensure protection of human health and notify the Division. 2) Within seven (7) days of detection, place in the operating record a copy of the explosive gas levels detected and a description of the steps taken to protect human health; and 3) Within sixty (60) days of detection, implement a remediation plan for the explosive gas release, place a copy of the plan in the operating record, and notify the Division that the plan has been implemented. The plan shall describe the nature and extent of the problem, the proposed remedy. Table 1 Landfill Gas Probes Gas Probe ID Northing Easting MM-1 840,932.81 2,293,132.45 MM-2 841,284.69 2,293,314.10 MM-3 841,628.74 2,293,394.58 MM-4 841,877.22 2,293,531.39 MM-5 841,931.54 2,293,902.60 MM-6 841,789.70 2,294,152.09 MM-7 841,606.61 2,294,508.21 MM-8 841,210.04 2,294,718.94 MM-9 840,863.38 2,294,514.55 MM-10 840,434.32 2,294,234.85 MM-11 840,523.13 2,293,856.34 MM-12 840,644.88 2,293,493.26 APPENDIX A LFG MONITORING FORM   16    NC Division of Waste Management - Solid Waste Section Landfill Gas Monitoring Data Form Notice: This form and any information attached to it are "Public Records" as defined in NC General Statute 132-1. As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6). Facility Name: ______________________________________________ Permit Number: ____________________________ Date of Sampling: ___________________ NC Landfill Rule (.0500 or .1600): _____________________________________ Name and Position of Sample Collector: _________________________________________ Type and Serial Number of Gas Meter: _______________________________ Calibration Date of Gas Meter: ___________ Date and Time of Field Calibration: _____________________ Type of Field Calibration Gas (15/15 or 35/50): ____________ Expiration Date of Field Calibration Gas Canister: ________ Pump Rate of Gas Meter: _____________ Ambient Air Temperature: __________ Barometric Pressure: ______________ General Weather Conditions: _____________ Instructions: Under “Location or LFG Well” identify the monitoring wells or describe the location for other tests (e.g., inside buildings). A drawing showing the location of test must be attached. Report methane readings in both % LEL and % methane by volume. A reading in percent methane by volume can be converted to % LEL as follows: % methane by volume = % LEL/20 If your facility has more gas monitoring locations than there is room on this form, please attach additional sheets listing the same information as contained on this form. Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct. I am aware that there are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment. _________________________________________ _________________________________________ SIGNATURE TITLE Groundwater and Surface Water Monitoring Plan Nash County C&D Landfill And Horizontal Expansion October 2016 1100 Crescent Green Drive, Suite 208 Cary, North Carolina 27518 • O: 919-792-1900 • F: 866-311-7206 This page intentionally left blank GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL i CONTENTS 1.0 INTRODUCTION ....................................................................................................... 1 2.0 GROUNDWATER AND SURFACE WATER SAMPLING LOCATIONS .................... 1 2.1 STATIC WATER LEVEL MEASUREMENTS ......................................................... 2 2.2 DETECTION OF IMMISCIBLE LIQUIDS ............................................................... 2 2.3 MONITORING WELL PURGING ........................................................................... 3 2.4 GROUNDWATER SAMPLE COLLECTION .......................................................... 3 2.5 SURFACE WATER SAMPLE COLLECTION ........................................................ 4 2.6 EQUIPMENT DECONTAMINATION ..................................................................... 5 2.7 FIELD QA/QC PROGRAM .................................................................................... 5 3.0 SAMPLE PRESERVATION AND SHIPMENT ........................................................... 5 4.0 FIELD LOGBOOK ..................................................................................................... 6 5.0 LABORATORY ANALYSIS ....................................................................................... 7 6.0 STATISTICAL EVALUATION .................................................................................... 7 7.0 RECORD KEEPING AND REPORTING ................................................................... 8 7.1 NOTIFICATIONS ................................................................................................... 8 7.2 WELL ABANDONMENT/REHABILITATION .......................................................... 9 7.3 IMPLEMENTATION SCHEDULE .......................................................................... 9 Figure 1 – Monitoring Locations Table 1 – Monitoring Location Data Table 2 - Laboratory Analytical Testing Parameters for Surface Water and Groundwater Samples This page intentionally left blank GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 1 of 11 1.0 INTRODUCTION The North Carolina Solid Waste Rules, Section 13B .0504, specifies that the owner/operator must provide, as part of the groundwater and surface water monitoring program, a water quality sampling and analysis plan (SAP). The SAP is to be designed to provide accurate assessment of groundwater and surface water quality at upgradient/upstream and downgradient/downstream sampling locations. This SAP addresses the following subjects. • Groundwater and surface water sample collection • Sample preservation and shipment • Analytical procedures • Chain-of-custody • Quality assurance/quality control (QA/QC) The methods and procedures described in the following sections are intended to provide representative samples and test data. Field procedures are presented in their general order of implementation. Equipment requirements are presented in each section, and quality assurance and record keeping requirements are presented in the last sections. Strict adherence to these procedures is required. 2.0 GROUNDWATER AND SURFACE WATER SAMPLING LOCATIONS Groundwater and surface water will be monitored at locations as shown on Figure 1. Well construction data for the groundwater well network is presented in Table 1. Table 1 further indicates the timing of well installation and/or abandonment relative to the phase of landfill operation. Groundwater and surface water samples will be collected from each monitoring point and analyzed for a list of detection monitoring target parameters in accordance with NC Division of Waste Management (NC DWM) regulations. Baseline detection monitoring will consist of four independent sampling events during the initial semi-annual period, followed by semi-annual sampling at each location thereafter. The detection monitoring wells are designed to monitor the shallow aquifer at the site and are constructed of 2-inch inside diameter Schedule 40 PVC, with isolated well screen intervals, in accordance with North Carolina well construction standards 15A NCAC 2C. GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 2 of 11 2.1 STATIC WATER LEVEL MEASUREMENTS Static water levels will be measured in each monitoring well prior to purging and sampling of groundwater. Static water level data will be used to monitor changes in site hydrogeologic conditions. The following measurements will be recorded in a dedicated field book prior to purging and sample collection. • Static water level (measured to nearest 0.01 foot) • Total depth of well • Height of water column in well • Changes in conditions of well, protective casing, surface pad and surroundings An electronic water level instrument will be used to accurately measure water levels to within 0.01 foot. Each well will have a permanent, easily identified reference point on the top of the PVC well casing from which all water level measurements will be made. The reference point will be marked and the elevation of the top of the PVC casing will surveyed by a North Carolina Registered Land Surveyor. The static water level and total depth measurements will be used to calculate the volume of water in the well. The parts of the static water level instrument that will contact groundwater within the well (e.g., graduated tape and electronic indicator) will be constructed of inert materials such as stainless steel and Teflon™. The instrument will be thoroughly decontaminated between well measurements by washing with non-phosphate soap and triple rinsing with deionized water to prevent cross-contamination from one well to another. 2.2 DETECTION OF IMMISCIBLE LIQUIDS The detection of immiscible non-aqueous phase liquids (NAPLs) is not anticipated at this facility based on the waste stream handled. However, the water-level measuring instrument used at the facility (described above) will be equipped with an electronic interface probe that is capable of distinguishing NAPLs from water. Monitoring for both light NAPLS (less dense than water) and dense NAPLs (more dense than water) will be conducted at the site by measuring at the water-table and at the bottom of each well. In the event that NAPLs are detected, the instrument will initially be cleaned with denatured laboratory grade isopropyl alcohol, followed by washing with non-phosphate soap and triple rinsing with deionized water to prevent cross-contamination from one well to another. GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 3 of 11 2.3 MONITORING WELL PURGING Following measurement of the static water levels in all of the wells, individual wells will be purged of all stagnant water. The stagnant water, which is not representative of true aquifer conditions, must be removed to ensure that fresh formation water can be sampled. Each monitoring well will be purged using a new PVC disposable bottom-loading bailer or using pre-cleaned Teflon-lined disposable polyethylene tubing connected to a peristaltic pump under low flow conditions. Prior to sampling, the monitoring wells will be purged of a minimum of three static well volumes of water, or until dry. During purging, measurements will be made in the field of the pH, temperature, specific conductance and turbidity of the groundwater collected from the monitoring wells, in accordance with NC DWM requirements. Data collected will be recorded in a dedicated field book. 2.4 GROUNDWATER SAMPLE COLLECTION After the wells are purged, groundwater samples will be collected for laboratory analysis. New latex or nitrile disposable gloves will be donned prior to sampling at each well. Groundwater samples will be collected using the new disposable PVC bottom-loading bailers that were used to purge the wells or using the pre-cleaned Teflon-lined disposable polyethylene tubing connected to a peristaltic pump under low flow conditions. In general, sampling will be conducted as soon as practical after purging is complete. In the event that a monitoring well runs dry during purging, it is acceptable to allow the well to recharge up to 24 hours prior to sampling. Similarly, wells with excess turbidity may be allowed to sit up to 24 hours prior to sampling to allow collection of a representative groundwater sample. Water levels in the wells will be allowed to recover for a period not exceeding 24 hours after purging to produce an adequate sample volume. Wells that fail to produce an adequate sample volume within 24 hours of purging will not be sampled. Temperature, ph, specific conductance and turbidity will be measured immediately prior to sampling as a measure of purging efficiency and the results recorded in a dedicated field book. The temperature, pH, specific conductance and turbidity meters will be calibrated prior to each sampling event according to the manufacturer’s specifications and consistent with Test Methods for Evaluating Solid Waste – Physical/Chemical Methods (SW-846). Groundwater samples will be collected and contained in the order of volatility of specific parameters as follows. • Temperature, ph, specific conductance and turbidity measurements • Volatile Organic Compounds GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 4 of 11 • Total Metals All detection monitoring samples will be collected unfiltered as required by the NC DWM. All reusable sampling equipment, including meter probes, will be thoroughly decontaminated between wells by washing with non-phosphate soap and water, followed by triple rinsing with deionized water. Samples will be collected directly from the disposable bailers or the Teflon-lined disposable polyethylene tubing connected to the peristaltic pump into laboratory-prepared containers that have been specifically prepared for the preservation and storage of compatible parameters. All groundwater sample containers will be immediately placed on ice in a cooler following sample collection in accordance with required sampling protocol. Blanks and duplicate samples will be collected and analyzed for the same parameters as groundwater samples to ensure cross-contamination has not occurred. One set of trip blanks, described later in this document, will be prepared at the laboratory and will remain in the sample cooler during sample collection and shipment to the laboratory for analysis to ensure that the sample containers or handling processes have not affected the quality of the samples. A duplicate groundwater sample may be collected from a single well as a check of laboratory accuracy and reproducibility. 2.5 SURFACE WATER SAMPLE COLLECTION Surface water samples will be obtained from areas of minimal turbulence and aeration. The following procedure will be implemented for sampling surface water at each location. • Don new latex or nitrile disposable gloves • Hold sample bottle with one hand, and with the other, remove the cap • Push the sample container slowly into the water column and tilt up towards the current to fill. A depth of about 6 inches is satisfactory. Avoid breaching the surface or agitating the water while filling the container • If there is little current movement, the container should be moved slowly in a lateral direction, side to side, keeping the opening pointed upstream. Blanks and duplicates, preservatives, handling and transport procedures for the surface water samples will be identical to those noted form the groundwater samples. GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 5 of 11 2.6 EQUIPMENT DECONTAMINATION All non-dedicated sampling equipment that will come into contact with groundwater or surface water will be decontaminated before each use. The equipment decontamination procedure is presented below. • Clean item with tap water and non-phosphate detergent (Alconox™, Liquinox™ or equivalent), using a brush if necessary to remove particulate matter and surface films • Rinse thoroughly with tap water • Triple rinse with deionized water and allow to air dry • Wrap with aluminum foil, if necessary, to prevent contamination of equipment during storage or transport 2.7 FIELD QA/QC PROGRAM Field Quality Assurance/Quality Control (QA/QC) for the subject facility requires the routine collection and analysis of trip blanks to verify that the sampling collection and handling process has not affected the quality of the samples. The trip blanks will be prepared at the laboratory and transported to the site in the sample cooler with the field sample containers, handled like a sample collected in the field, and returned to the laboratory for analysis. The trip blanks will be analyzed for volatile organic compounds (VOCs) only. Any VOCs found in the trip blanks will be attributed to: 1) contaminated sample container in which the blank was prepared; 2) contaminated source water; or 3) contamination during handling. Any concentrations of contaminants found in the trip blanks will be reported but will not be used to correct the water-quality data for the groundwater or surface water samples. In the event that elevated constituent concentrations are found in the trip blanks, the laboratory results for that constituent in the field samples will be flagged for future evaluation and possible resampling. 3.0 SAMPLE PRESERVATION AND SHIPMENT Sample preservation and shipment procedures will be carefully monitored to ensure sample integrity. Ice and/or chemical ice packs will be used to preserve samples in a cooler at the required 4°C temperature. Dry ice is not to be used. Samples will be delivered to the laboratory via overnight courier to ensure sample holding times are not exceeded. Shipment and receipt of the samples will be coordinated with the laboratory. Once collected, samples will be placed on ice and cooled to a temperature of 4°C. Samples are to be packed in high-impact polystyrene-insulated coolers so as to inhibit GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 6 of 11 breakage of sample containers. Chain-of-custody control of all samples will be maintained as follows. • Labels will be placed on individual sample containers in the field, indicating the site name, sample location, time and date of sampling, required analyses, sampler’s initials and sample preservative. • Sample containers will be individually secured or placed in a secure area in iced coolers and will remain in the continuous possession of the field samplers until custody has been transferred as provided by the chain-of- custody form. • Upon delivery to the laboratory, samples will be given laboratory sample numbers and recorded into a logbook indicating client, well number, and date and time of delivery. The laboratory manager or his designee will sign the chain-of-custody forms and formally receive the samples. Proper refrigeration of the samples will be maintained at the laboratory prior to preparation of the 4.0 FIELD LOGBOOK The field samplers will maintain an up-to-date logbook and sampling forms documenting important information pertaining to field sampling activities. The field logbook and sampling forms will document the following. • Site name and location • Date and time of sampling • Climatic conditions at the time of sampling • Personnel conducting the sampling • Sampling locations • Presence of NAPLs • Static water levels in wells • Total depth of wells • Purged water volumes and qualitative well yield • Time well purged • Observations of water samples (appearance, odor, etc.) • Time of sample collection GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 7 of 11 • Temperature, pH, specific conductance and turbidity 5.0 LABORATORY ANALYSIS The groundwater and surface water parameters to be analyzed will be those specified in the landfill permit and applicable North Carolina Solid Waste Management Rules. These will include field indicators of groundwater quality (temperature, pH, specific conductivity and turbidity), as well as volatile organic and total metal constituents listed in Appendix I of 40 CFR 258. All laboratory analyses will be performed by a laboratory certified by the NC DWM for the analyzed parameters. QA/QC procedures are to be utilized at all times. The owner/operator of the landfill is responsible for selecting a laboratory and ensuring that they are utilizing proper QA/QC procedures. The laboratory must have a QA/QC program based on specific routine procedures outlined in a written laboratory QA/QC manual. The QA/QC procedures listed in the manual provide the laboratory with the necessary assurances and documentation for accuracy and precision of analytical determinations. Internal QC checks shall be undertaken regularly by the laboratory to assess the precision and accuracy of analytical procedures. The internal QC checks include the use of calibration standards, standard references, duplicate samples and spiked or fortified samples. Calibration standards shall be verified against a standard reference obtained from an outside source. Calibration curves shall be developed using at least one blank and three standards. Samples shall be diluted if necessary to ensure that analytical measurements fall on the linear portion of the calibration curve. Duplicate samples shall be processed at an average frequency of 10 percent to assess the precision of testing methods, and standard references shall be processed monthly to assess accuracy of analytical procedures. Spike or fortified samples shall be carried through all stages of sample preparation and measurement to validate the accuracy of the analysis. During the course of analyses, QC data and sample data shall be reviewed by the laboratory manager to identify questionable data and determine if the necessary QA/QC requirements are being followed. If a portion of the laboratory work is subcontracted, it is the responsibility of the contracted laboratory to verify that all subcontracted work is completed by certified laboratories. 6.0 STATISTICAL EVALUATION Copies of all laboratory results and water quality reports will be kept in the Operation Record. Reports summarizing all water quality data and statistical evaluations will be submitted to the NC DWM for each sampling event following the baseline monitoring period. Methods to evaluate the data are taken from the North Carolina Solid Waste GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 8 of 11 Rules, 40 CFR 258.53(g) and the USEPA RCRA Ground Water Monitoring Technical Guidance. The North Carolina Solid Waste Rules require that the owner or operator of the landfill specify a statistical method outlined in the rules to evaluate water quality monitoring data. The goal of the statistical analysis is to determine whether statistically significant evidence of contamination exists and to identify the point of contamination. Upon receipt of the data from each monitoring event, the statistical database of analyses will be updated. The North Carolina Solid Waste Rules provide several acceptable methods for statistical analysis of water-quality data. • Parametric analysis of variance (ANOVA) • Rank-based (non-parametric) ANOVA with multiple comparisons • Tolerance prediction interval • Control chart • Test of proportions • An alternative statistical method that meets the performance standards of 40 CFR 258.53(h) Statistical evaluation of water-quality monitoring data will be performed for the duration of the monitoring program, including the post-closure care period. The choice of an appropriate statistical test depends on the type of monitoring, the nature of the data, and the proportion of values in the data set that are below detection limits. The statistical analysis will be performed separately for each detected constituent in each well. The statistical methods used will be based on the USEPA Statistical Analysis of Ground Water Monitoring Data at RCRA Facilities, Interim Final Guidance Document (1989). All analyses will be performed in accordance with North Carolina Regulations 15A NCAC 13B.1632. 7.0 RECORD KEEPING AND REPORTING 7.1 NOTIFICATIONS Should a statistically significant increase in groundwater concentrations of monitored parameters as defined in the North Carolina Solid Waste Rules be detected during monitoring, the owner/operator of the landfill shall notify the NC DWM within 14 days and will place a notice in the operating record as to which constituents showed an increase. GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 9 of 11 7.2 WELL ABANDONMENT/REHABILITATION Should monitoring wells become irreversibly damaged or require rehabilitation, the NC DWM shall be notified. If monitoring wells and/or piezometers are damaged irreversibly they shall be abandoned under the direction of the NC DWM. The abandonment will consist of plugging the well with a chemically inert sealant which is impermeable, such as neat cement and/or bentonite clay. Where possible, it is preferred to over-drill and remove the well casing, screen and filter pack prior to grouting. 7.3 IMPLEMENTATION SCHEDULE This Water Quality SAP shall become effective upon approval by the NC DWM and will be implemented contingent on approval for construction of the landfill expansion. Baseline sampling shall commence as soon as possible after the expansion phase is granted approval and prior to waste being disposed each the new phase. Four independent rounds of sampling and laboratory analyses of groundwater and surface water shall be performed within six months of approval of the landfill expansion. Sampling will then be performed semi-annually throughout the active life of operational life of the facility and during the post-closure monitoring period, unless an alternate sampling schedule is accepted by the NC DWM. Table 1 presents timing of well installation and/or abandonment relative to the phase of landfill operation. Proposed locations and anticipated screen intervals are shown on Figure 1. Table 1 – Installation and Abandonment Schedule Phase Install Abandon Notes 4 MW-6R*; MW-7 MW-6; P-20S; P- 20D *Rename existing P-21S to MW- 6R; 5 MW-8 P-26 6 None P-24, P-25 7 MW-9* None *Rename existing P-19S to MW- 9 8 None P-22 9 None P-23 Installation and abandonment procedures are discussed in detail in Section 8. GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 10 of 11 8.0 WELL CONSTRUCTION AND DECOMMISSIONING SPECIFICATIONS Table 1 presents timing of well installation and/or abandonment relative to each phase of landfill operation. The following subsections describe construction and abandonment specifications. 8.1 CONSTRUCTION SPECIFICATIONS The proposed Type II groundwater monitoring wells will be installed using a hollow- stem auger drilling rig. All Type II wells will be constructed of 2-inch ID Schedule 40 PVC well casing and 10 feet of machine-slotted well screen with 0.010” slots. A sand pack will be emplaced within the annular space to approximately 2 feet above the top of the well screen, above which a 2-foot thick bentonite seal will be installed. The annular space will be finished with Portland cement/bentonite slurry to grade. The wells will be finished with solid PVC risers extending approximately 2 to 3 feet above grade and installed in a locking steel casing with concrete pad. All piezometers will be installed and constructed in accordance with North Carolina Well Standards. Soil samples will be collected at each drilling location for lithologic descriptions using the standard penetration test (SPT) method with a 140-lb sliding hammer and steel split-spoon samplers. Samples will be collected in 2-feet intervals for every five feet of depth to the completion depth of the boring. The soil retained in each split-spoon sampler will be logged by a geologist with respect to texture, composition, color, and moisture content. In addition, one soil sample collected from the saturated zone at each drilling location will be retained and submitted for grain size analysis at a geotechnical laboratory to allow for estimating the specific yield of the aquifer sediments. Additional soil index testing will be performed on select samples to further characterize overburden soils. The augers, drill pipe, and drill rig will be decontaminated using a pressure washer prior to and following completion of drilling for the project. Each well will be developed after installation using a down hole pump or bailer until the discharge water appears to be free of suspended sediments or for a maximum of one hour. Each well will be surveyed relative to the existing site datum for horizontal position and elevation by a North Carolina licensed surveyor. At each well, elevations will be measured of the ground surface and top of the solid PVC riser. A permanent mark will be made on the top of the PVC riser at the point where the elevation measurement is made for future reference when collecting depth to water data. GROUNDWATER AND SURFACE WATER MONITORING PLAN HORIZONTAL EXPANSION OF THE NASH COUNTY C&D LANDFILL Page 11 of 11 8.2 ABANDONMENT SPECIFICATIONS Locations to be abandoned shall be over-drilled using using hollow-stem augers to remove installed well materials. Bore holes shall be abandoned by tremie grounting, using a cement-bentonite grout. Well materials shall be properly disposed of upon completion.