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1306_GreenwayWaste_CDLF_ResponsetoComments_FID1088231_20180404
April 6, 2018 Allen Gaither N.C. Department of Environmental Quality Asheville Regional Office 2090 U.S. 70 Highway Swannanoa, NC 28778 Dear Mr. Gaither: Subject: Engineering Technical Review Greenway Waste Highway 49 CDLF Cabarrus County, Permit # 1306-CDLF-2000, File ID 996355 CEC Project 111-370.0002 Per N.C. Department of Environmental Quality Engineering Technical Review of the above referenced project dated December 18, 2017, CEC is providing revised plan sheets and report for the Greenway Waste Highway 49 CDLF. The following resolutions are provided with this submittal: Facility Plan 1. Rule .0537(d)(1)(A) requires site development drawings to delineate the areal limits of all landfill units, and incorporate the buffer requirements set forth in Item (1) of Rule .0540. Drawings C100 through C300 appear to only show Phases 1, 2 and 3 (Current Landfill) and do not include Phases I, II, and III (Landfill Expansion). Additionally, no drawings appear to show any buffer requirements. Response: Landfill unit limits and buffer requirements were added to a new drawing C001 (Overall Site Plan) as well as drawings C100 through C300 as required by Rule .0540. The application for Expansion Area 1 which includes Phases I, II, and III is provided in Appendix G in its entirety. 2. Rule .0537(d)(1)(B) requires site development drawings to locate all solid waste management facilities and facility infrastructure, including landfill units. Figure 1-4, Facility Map, includes all required information, but this information is not represented on Drawings C100 through C300. Response: An overall site plan has been provided as C001 to show all facilities included in Figure 1-4 Facility Map per the requirements of Rule .0537(d)(1)(B). The same information has been added to drawings C100 through C300. Mr. Allen Gaither – NCDEQ CEC Project 111-370.0002 Page 2 April 6, 2018 3. Rule .0537(d)(1)(C) requires site development drawings to delineate the areal limits of grading, including borrow and stockpile areas. Drawings C200 and C300 appear to only show grading for Phases 1, 2 and 3 (Current Landfill) and do not include Phases I, II, and III (Landfill Expansion) and do not show borrow or stockpile areas. Response: The application for Expansion Area 1 which includes Phases I, II, and III is provided in Appendix G in its entirety. Borrow areas and existing stockpile areas are shown and called out on drawings C001 thru C300. 4. Rule .0537(d)(1)(D) requires site development drawings to define phases of development, which do not exceed approximately five years of operating capacity. Figure 1-4, Facility Map, shows the phases of development, but this information is not represented on Drawings C100 through C300. Response: Phases of development have been added to drawings C100 through C300 to mimic Figure 1-4, Facility Map per requirements of Rule .0537(d)(1)(D). The application for Expansion Area 1 which includes Phases I, II, and III is provided in Appendix G in its entirety. 5. Rule .0537(d)(1)(E) requires site development drawings to delineate proposed final contours for the C&DLF unit(s) and facility features for closure. Drawing C200 and C300 appear to only show final contours for Phases 1, 2 and 3 (Current Landfill) and do not include Phases I, II, and III (Landfill Expansion). Additionally, the side-slope contour lines appear to be the previously approved contours as they do not extend to the new proposed limits of waste. Response: The application for Expansion Area 1 which includes Phases I, II, and III is provided in Appendix G in its entirety. Since it is NOT the owner’s intent to add new waste outside of the old limits of waste or modify the toe of slope, side slope contours in Phases 1, 2 and 3 (Current Landfill) do not extend to the new proposed limits of waste. As such, the limits of waste was adjusted to maximize the proposed waste footprint while maintaining compliance with all NC Solid Waste regulations and buffers. 6. Rule .0537(d)(1)(F) requires site development drawings to delineate physical features including floodplains, wetlands, unstable areas, and cultural resource areas as defined in Rule .0536. Figures 1-1, Floodplain Map, and 1-2, Wetlands Map, in the General Information section delineate floodplains and wetlands, but the required information is not included in the Facility Plan and is not represented on Drawings C100 through C300. Response: Floodplain and wetland features were added to the Facility Plan as well as to Drawings C001 through C300 as required by Rule .0537(d)(1)(F). Mr. Allen Gaither – NCDEQ CEC Project 111-370.0002 Page 3 April 6, 2018 7. Rule .0537(d)(3) requires a survey locating all property boundaries for the proposed landfill facility certified by an individual licensed to practice land surveying in the State of North Carolina. Drawing C100, Existing Site Conditions, appears to include a partial survey produced by Patterson Land Surveying, PA. However, the survey only shows the property boundary for the area around Phases 1, 2 and 3 (Current Landfill) and does not show the property boundary around Phases I, II, and III (Landfill Expansion). Response: Property boundary around Phases I, II, and III (Landfill Expansion) is shown in the permit application for Phases I, II, and III (Landfill Expansion). The application for Expansion Area 1 which includes Phases I, II, and III is provided in Appendix G in its entirety. 8. Rule .0537(e)(2)(b) requires an analysis of landfill capacity and soil resources to include estimates of gross capacity of the C&DLF unit; gross capacity for each phase of development of the C&DLF unit; the estimated operating life of all C&DLF units in years; and required quantities of soil for landfill construction, operation, and closure; and available soil resources from on-site. Section 2.4, Landfill Capacity, includes gross capacity and acreage for the landfill and each unit, but does not include estimated operating life or a discussion of soil resources. Response: Estimated operating life and discussion of soil resources have been added to Section 2.4 per the requirements of Rule .0537(e)(2)(b). 9. Table 1-1, Capacity and Acreages, shows the current permitted acreage Phase 1 as 14.8 and the proposed acreage as 11.1, indicating a decrease. However, Figure 1-4, Facility Map, clearly shows the Area of Proposed Expansion to be larger than the Permitted Limits of Waste. Additionally, Table 1-1 shows the permitted acreage for Phases 2 & 3 as 10.2 for a total permitted acreage of 25.8 for the Current Landfill. However, 14.8 acres plus 10.2 acres equals 25.0 acres which is inconsistent with the total provided. Response: The current permitted values in the table have been revised for consistency with the previously approved Permit To Operate (PTO) as issued by the NCDENR on July 1, 2011 under Permit No. 13-06-CDLF-2011. Engineering Plan 10. Section 3.4, Stability and Settlement, proposes to utilize the settlement and stability calculations from the previously approved applications as no significant changes to the landfill location, design, construction and operations are requested for the Permit Modification, Extension of Permit to Construct the Expansion Area Phase I and/or Permit Mr. Allen Gaither – NCDEQ CEC Project 111-370.0002 Page 4 April 6, 2018 Renewal associated with this Engineering Plan. However, this application is proposing changes to the Current Landfill design amounting to a roughly 14% increase in acreage (adding 3.6 acres to the disposal footprint), a 9.6% increase in the landfill capacity and design changes to the closure grades which include the elimination of 10-feet wide side-slope benches every 40-feet vertically in favor of “tack-on” drainage swales for storm-water management. The cumulative effect of these design changes would appear to be significant enough to warrant a new assessment of landfill stability. Response: A new stability assessment was not needed for the proposed design for the following reasons: additional acreage to the disposal footprint (expanded area) will not have additional waste placement; side slopes (3:1) remain unchanged; tack-on drainage swales will be immediately stabilized and will not contribute to the instability of the side slopes; and, the height of the landfill was lowered from 710 feet to 676 feet, a 34 feet in change which keeps the current stability assessment conservative. 11. Section 3.6, Construction of the Landfill, states Preparation and development of the landfill will require a number of activities including subgrade preparation, sediment and erosion control, and stormwater control. No changes to the landfill location, design, construction and operations are requested for the for Permit Modification, Extension of Permit to Construct the Expansion Area Phase I and/or Permit Renewal associated with this Engineering Plan. However, as previously stated, the design of the landfill has changed. As a result, a description of the materials and construction practices that conforms to the requirements set forth in Rule .0540 must be provided for the proposed expansion area as required by Rule .0539(d)(2). Response: Narrative in Section 3.6 has been revised to indicate changes to the landfill design. Description of materials and construction practices conforming to Rule .0540 was added as required by Rule .0539(d)(2). 12. Rule .0539(e)(2) requires engineering drawings to illustrate grading plans: proposed limits of excavation, subgrade elevations, intermediate grading for partial construction. Drawings C200 and C300 illustrate proposed limits of excavation, but do not provide subgrade elevations for the proposed expansion area. Response: Subgrade elevations for the proposed expansion area was not provided since no new waste is being added to the new area of the proposed limits of waste. The limits of waste was adjusted to maximize the limits of waste footprint while maintaining compliance with all NC Solid Waste regulations and buffers. Mr. Allen Gaither – NCDEQ CEC Project 111-370.0002 Page 5 April 6, 2018 13. Rule .0539(e)(3) requires engineering drawings to illustrate the stormwater segregation system, if required: location and detail of features. Drawings C200 through C400 do provide features and details for storm-water management. However, some of the features (perimeter ditches, conveyance pipes and outlet protection devices) are shown to be inside the proposed waste limits in some areas. Response: Stormwater management features are inside the proposed limits of waste in some areas since no new construction or waste placement is planned in the new areas of the limits of waste. The limits of waste was adjusted to maximize the limits of waste footprint while maintaining compliance with all NC Solid Waste regulations and buffers. 14. Rule .0539(e)(4) requires engineering drawings to illustrate the cap system: base and top elevations, landfill gas devices, infiltration barrier, surface water removal, protective and vegetative cover, and details. Drawings C200 through C400 do provide elevations, surface water removal and details. However, the side-slope contour lines appear to be the previously approved contours as they do not extend to the new proposed limits of waste. Response: Side slope contour lines do not extend to the new proposed limit of waste as no new construction or waste placement is planned in the new areas of the limits of waste. The limits of waste was adjusted to maximize the limits of waste footprint while maintaining compliance with all NC Solid Waste regulations and buffers. 15. Rule .0539(e)(6) requires engineering drawings to illustrate the vertical separation requirement estimates. There are no cross-sections or a map to indicate the proposed expansion area meets the vertical separation requirements. Response: Cross-sections or map of proposed expanded area that show vertical separation requirements is not required as no new waste is being added in the expanded area. The limits of waste was adjusted to maximize the limits of waste footprint while maintaining compliance with all NC Solid Waste regulations and buffers. CQA/CQC Plan 16. Rule .0541(b)(1) requires the plan to establish responsibilities and authorities for the construction management organization. The responsibilities of each party are discussed, but the authority of each party, as it relates to construction of the landfill, is not discussed. Response: Authority of each party, as it relates to construction of the landfill, has been provided to Section 1.3 as required by Rule .0541(b)(1). Mr. Allen Gaither – NCDEQ CEC Project 111-370.0002 Page 6 April 6, 2018 17. Sections 2.0 through 7.0 of the CQA/CQC Plan make numerous references to the “project technical specifications” or the “project specifications” with regards to construction and testing methods, frequencies or requirements. However, there appear to be no “project technical specifications” or “project specifications” included as part of the application. Response: Reference to “project technical specifications” and “project specifications” have been removed from the CQA/CQC Plan. No technical specifications were present in the approved permit application. 18. Section 8.6, Signature and Final Report, states the Design Engineer will also provide a final report that will certify that the work has been performed in compliance with the Plans and Specifications, and that the supporting documents provide the necessary information. However, Rule .0541(d)(4) requires a certification that construction was completed in accordance with: (A) the CQA plan, (B) the conditions of the permit to construct, (C) the requirements of this Rule, and (D) acceptable engineering practices. Response: The narrative mentioned in Section 8.6, Signature and Final Report has been revised to reflect the requirements of Rule .0541(d)(4). Operation Plan 19. Rule .0542(b)(1)(B) requires operation drawings to illustrate the progression of operation including initial waste placement, daily operations, yearly contour transitions, and final contours. Drawings C200 and C300 do provide final contours, although these contours don’t appear to include the expansion area, but do not include yearly contour transitions. Response: Final cover contours do not extend to the new proposed limits of waste, as no new waste is being added in the expanded area and the toe of slope will not change. The limits of waste was adjusted to maximize the limits of waste footprint while maintaining compliance with all NC Solid Waste regulations and buffers. Yearly contour transitions for the expanded area do not exist as no new waste will be placed in those areas. 20. Rule .0542(b)(1)(D) requires operation drawings to illustrate special waste handling areas, such as asbestos disposal area, within the C&DLF unit. No special waste handling areas are indicated on the drawings although Section 3.1, Asbestos Waste, indicates the facility does accept friable asbestos waste. Response: The special waste handling area has been added to Drawing C100, including a note about friable asbestos waste acceptance. Mr. Allen Gaither – NCDEQ CEC Project 111-370.0002 Page 7 April 6, 2018 21. Rule .0542(b)(1)(E) requires operation drawings to illustrate buffer zones, noting restricted use. No buffer zones are indicated on the drawings. Response: Buffer zones have been added to the drawings as required by Rule .0542(b)(1)(E). 22. Section 3.9, Cover Spreading, and Compacting, states Any area that exceeds one-half (1/2) acre or more on a weekly basis will be covered with six (6) inches of earthen material. Given the wording, it is not clear if cover will be applied “at least once weekly” as required by Rule .0542(f)(1). Response: The mentioned narrative in Section 3.9, Cover Spreading, and Compacting has been revised to reflect the requirements of Rule .0542(f)(1). 23. Rules .0542(n)(1)(C) and (D) require the facility to record and maintain specific information. This information is not included in the list provided in Section 3.14, Operating Record and Recordkeeping Requirements. Response: Rules .0542(n)(1)(C) and (D) have been added to the list provided in Section 3.14, Operating Record and Recordkeeping Requirements. 24. Section 3.3.1, Overview, states Initially, scrap metal recycling, wood waste, sheetrock, corrugated cardboard roofing shingles and inert materials will be recycled. However, it is the understanding of the Section that only gypsum/sheetrock recycling is currently being managed within the indoor Recycling Center. Response: Gypsum/sheetrock is currently being managed in the Recycling Center, but the facility may accept scrap metal recycling, wood waste, sheetrock, corrugated cardboard roofing shingles and inert materials for recycling in the Recycling Center, based on market conditions. 25. Section 3.3.4, Holding Time for Recyclable, states other materials such as concrete, wood waste, shingles, metals may be relocated to the temporary stockpile areas adjacent to the landfill working face as indicated on the attached site plan. No stockpile areas appear to be indicated on the figures and drawings within the application. Response: Stockpile areas have been indicated on the figures and drawings within the application. 26. Section 3.4.6, Gypsum Wallboard/Sheetrock Recycling, states Segregated loads of some products such as gypsum may originate on the project construction site and transported to the facility at which time they are directed to our gypsum reprocessing area bypassing the Mr. Allen Gaither – NCDEQ CEC Project 111-370.0002 Page 8 April 6, 2018 indoor Recycling Center. However, it is the understanding of the Section that the gypsum/sheetrock recycling is currently being managed within the indoor Recycling Center. Response: Segregated loads of some gypsum products may be directed to the gypsum reprocessing area, as shown on Drawing C100. Gypsum products/Sheetrock may also be recycled in the Recycling Center. 27. Section 3.4.6, Gypsum Wallboard/Sheetrock Recycling, states The material is deposited on the ground and stockpiled outdoors but is covered with weighted tarps to keep the material dry awaiting processing. Additionally, a Notice of Deficiency (NoD) was issued on April 24, 2017 for failure to cover the material in accordance with the plan. Based on the understanding this material is currently being managed within the indoor Recycling Center, and an NoD was issued for not following the documented process, the Section recommends updating the plan to include the long-term management of gypsum within the indoor Recycling Center. Response: The process for temporary stockpiling and processing gypsum wallboard/sheetrock recycling materials has been discussed with the site operations staff and new tarping products have been purchased to ensure compliance with the currently approved plan. 28. Section 1.1, Project Description, in Attachment A, Composting Facility Permit Application, states The property is owned by C&D Management, LLC, and the facility will be operated by Highway 49 C&D Landfill, LLC. Mr. Ronald Gilkerson (Telephone (704) 895-0329) will be responsible for daily operations. This information is also included in Section 1.1 as the Proposed Site Operator and the Operator’s Representative. However, it is the understanding of the Section that Mr. Gilkerson is retired and no longer working at the facility. Response: The Compost Facility Permit Application has been updated and a renewal of the Compost Facility Permit is requested. 29. Section 1.1, Project Description, in Attachment A, Composting Facility Permit Application, states Renewal for the composting permit is being sought. Response: The Compost Facility Permit Application has been updated and a renewal of the Compost Facility Permit is requested. Mr. Allen Gaither – NCDEQ CEC Project 111-370.0002 Page 9 April 6, 2018 Closure Plan 30. Rule .0543(d)(2) requires the closure plan to include an estimate of the largest area of the C&DLF unit requiring the specified cap system at any time during the active life. There does not appear to be an estimate of the closure area in the plan. Response: An estimate of the largest area of the C&D landfill unit requiring the specified cap system at any time during the active life has been provided in Section 4.4, Closure Cost as required by Rule .0543(d)(2). 31. Rule .0543(d)(3) requires the closure plan to include an estimate of the maximum inventory of wastes on-site over the active life of the landfill facility. There does not appear to be an estimate of the waste inventory in the plan. Response: Estimates of the maximum inventory of wastes on-site over the active life of the landfill facility have been provided in Section 4.1, Closure Cap System. 32. Appendix D of the application provides the closure cost estimates for the facility. However, the worksheets provided indicate the cost estimates are for Greenway Waste Solutions of Apex, LLC. Additionally, Worksheet 1 states the estimates are for Phases 1-3 while Worksheet 2 states the estimates are for Phases 1-2. Response: Worksheets have been revised to indicate the estimates are actually for Phases 1-3, not Phases 1-2, of Greenway Waste Solutions of Harrisburg, Inc., not Greenway Waste Solutions of Apex, LLC. Post- Closure Plan 33. Rule .0543(f)(2) requires the post-closure plan to include the name, address, and telephone number of the person or office responsible for the facility during the post-closure period. Section 5.1, Post-Closure Plan, lists Mr. Mike Griffin as the responsible party during the post-closure period, but does not provide an address or phone number. Response: As the responsible party, Mr. Mike Griffin’s address and telephone number have been added to Section 5.1, Post-Closure Plan as required by Rule .0543(f)(2). 34. Rule .0543(f)(4) requires the post-closure plan to include the cost estimate for post-closure activities. Section 5.5, Post-Closure Cost Estimate, states Appendix D is a summary of estimated cost for post-closure activities. Mr. Allen Gaither – NCDEQ CEC Project 111-370.0002 Page 10 April 6, 2018 Response: A cost estimate for post-closure activities has been provided in Appendix D as required by Rule .0543(f)(4). Please let us know if you need any additional information in support of this review. Sincerely, CIVIL & ENVIRONMENTAL CONSULTANTS, INC. Nathan Bivins, PE Scott L. Brown, PE Project Manager Vice President Attachments September 8, 2017 GREENWAY WASTE SOLUTIONS OF HARRISBURG, INC. LANDFILL PERMIT MODIFICATION AMENDMENT APPLICATION Prepared For: Greenway Waste Solutions of Harrisburg, Inc. 19109 West Catawba Avenue, Suite 200 Cornelius, North Carolina 28031 Prepared By: CIVIL & ENVIRONMENTAL CONSULTANTS, INC. CHARLOTTE, NORTH CAROLINA CEC Project 111-370.002 SEPTEMBER 2017 North Carolina Board of Examiners For Engineers and Surveyors License No. C-3035 -i- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 TABLE OF CONTENTS Page 1.0 GENERAL INFORMATION ...........................................................................................1 Project Description.................................................................................................. 1 Compliance with State and County Solid Waste Management Plans.................... 5 2.0 FACILITY PLAN ..............................................................................................................6 Facility Drawings .................................................................................................... 6 2.1.1 Facility Map .................................................................................................6 Facility Compliance ................................................................................................ 8 Waste stream ........................................................................................................... 8 Landfill Capacity .................................................................................................... 8 3.0 ENGINEERING REPORT .............................................................................................11 Landfill Facility Information ................................................................................ 11 Erosion and Sedimentation Control ...................................................................... 12 Stormwater Conveyance and Mitigation .............................................................. 13 3.3.1 Permit Modification Drainage Improvements ...........................................14 Stability and Settlement ........................................................................................ 15 Design Hydrogeologic Report .............................................................................. 15 Construction of the Landfill .................................................................................. 15 3.6.1 Final Cover System ....................................................................................16 3.6.2 Construction Quality Assurance Plan ........................................................17 4.0 CLOSURE PLAN ............................................................................................................18 Closure Cap System .............................................................................................. 18 Construction of Cap System ................................................................................. 18 Closure Schedule .................................................................................................. 18 Closure Cost .......................................................................................................... 19 5.0 POST-CLOSURE PLAN.................................................................................................20 Post-Closure Plan .................................................................................................. 20 Post-Closure Maintenance .................................................................................... 20 Post-Closure Monitoring ....................................................................................... 20 Planned use ........................................................................................................... 21 Post Closure Cost Estimate ................................................................................... 21 -ii- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Table of Contents (continued) Page ii FIGURES Figure 1-1 – Floodplains Figure Figure 1-2 – Wetlands Figure Figure 1-3 – USGS Topography Map Figure 1-4 – Facility Map TABLES Table 1-1 – Capacity and Acreage Table 1-2 – Proposed Capacity Modification Table 5-1 – Post-Closure Inspection Checklist APPENDICES Appendix A – Operations and Maintenance Plan Appendix B – Drawings Appendix C – Engineering Calculations Appendix D – Cost Estimate Appendix E – Proposed Monitoring Plan Appendix F – Construction Quality Assurance Appendix G – Expansion Area 1 Approved Permit Application -iii- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Table of Contents (continued) Page iii PERMIT MOD DRAWINGS C000 – Cover Sheet C001 – Overall Site Plan C100 – Existing Site Conditions C200 – Proposed Landfill Closure Grading Plan C300 – Proposed Landfill Closure Drainage Basin Map C400 – Details -1- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 1.0 GENERAL INFORMATION PROJECT DESCRIPTION The Facility is located in Cabarrus County, North Carolina, off of NC Highway 49. The Facility is bordered by Speedrail Court, Coddle Creek, and Mulberry Road. The immediate area west of the site is industrial in nature with the remainder of the site surrounded by rural and primarily wooded land. There is residential development to the north and east of the site, separated by Coddle Creek. Residential development is also present on Mulberry Road, south of the site. The landfill is classified as a C&D Landfill under Permit Number 13-06. This Permit Amendment Application is being made in support of a Permit Modification, extension of the Permit to Construct Phase I Expansion (July 1, 2011) and the Permit Renewal for the landfill. The landfill is currently comprised of three operating phases (Phases 1, 2 and 3) totaling approximately 25.8 acres and a proposed Expansion Area comprised of three additional phases (Phase I, II and III) totaling 36.8 acres. Internal roads will be maintained to be passable by disposal vehicles in all weather for access to the operations areas. Access roads will be provided to reach monitoring wells and other locations requiring periodic servicing. The Landfill facility has an existing entrance (Speedrail Court) off of Highway 49 in the western portion of the site. A scalehouse, scales, parking stalls, and a gate is located in the entrance corridor. Four existing sediment basins control the run-off from Phases 1, 2 and 3 of the operating landfill. One additional sediment basin has been constructed to control run-off from the Phase I Expansion area. Figure 1-1 shows the separation from floodplains, Figure 1-2 demonstrates that the Facility is not located in wetlands, and Figure 1-3 shows the general USGS topography and nearby streams. -2- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Figure 1-1 - Floodplain Map -3- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Figure 1-2 - Wetlands Map -4- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Figure 1-3 - USGS Topography Map -5- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 COMPLIANCE WITH STATE AND COUNTY SOLID WASTE MANAGEMENT PLANS The Facility is being developed in compliance with the North Carolina Department of Environment Quality (NCDEQ). The State Waste Policy and Management Act required NCDEQ to develop a state solid waste management plan. NCDEQ requires that a solid waste management facility permit to have two parts: Permit to Construct, and Permit to Operate and be in accordance with North Carolina Solid Waste Management Rules 15A NCAC 13B .0201 (c) and (d) and Rule 15A NCAC 13B .0534 (b) (2). Operation and maintenance of the Solid Waste Compost and Reprocessing Facility is in accordance with Solid Waste Compost Rules 15A NCAC 13B, Section .1401. -6- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 2.0 FACILITY PLAN FACILITY DRAWINGS 2.1.1 Facility Map Figure 1-4 depicts the Facility Map prepared on a topographical map representative of existing site conditions. It also reflects adjusted limits from the Permit Modification plans. -7- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Figure 1-4 - Facility Map -8- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 FACILITY COMPLIANCE The following is a discussion of the characteristics of the waste received at the facility, an analysis of landfill capacity and soil resources, and special engineering features consistent with Subparagraph (e)(1-2) of 15A NCAC 13B. WASTE STREAM Waste that is generated from the construction, remolding, repair, or demolition operation on pavement and buildings or structures will be accepted. The waste acceptance rate projected for this facility is approximately 120,000 tons per year. The estimated disposal rate may vary due to population, industrial, and commercial growth within the region, recycling efforts, or availability of other landfills. The Facility serves Cabarrus, Mecklenburg, Union Stanly, and Rowan Counties. Waste segregation procedures are presented in the Operations and Maintenance Plan, Appendix A. The facility will be operated with equipment owned by the landfill owner. At minimum equipment will consist of a dozer, compactor, track hoe, and a water truck. LANDFILL CAPACITY The C&D Landfill has an existing permitted gross capacity of 2,370,000 yd3 and 25.80 total acres for Phases 1, 2, and 3 (Current Landfill). Phases I, II, and III (Landfill Expansion) comprise an additional 36.8 acres with a gross capacity of 3,100,000 yd3. Capacity calculations were performed for the Facility from grading and closure plans as shown in the Permit Drawings (Appendix B). The currently Permitted Capacity and Acreages and the proposed Acreages of each of the phases are shown in the chart below: -9- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Table 1-1 – Capacity and Acreages C&D Unit Permitted Capacity (cy) Acreage Permitted Proposed Current Landfill Phases 1, 2, & 3 2,370,000 25.8 29.4 Landfill Expansion Phases I, II, & III 3,100,000 36.8 36.8 Total for Facility 5,470,000 62.6 66.2 The edge of waste limits for Phases 1-3 were adjusted slightly to maximize the proposed waste footprint, but still maintain compliance with all NC Solid Waste regulations and buffers. The revised limits are shown in Figure 1-4 above and in the construction drawings (sheets C200 and C300). The proposed modifications (see Section 3.1) to Phases 1-3 and Landfill Expansion areas will result in additional capacity for the phases. The combined permitted capacity for Phases 1-3 and Landfill Expansion is 5,470,000 cubic yards (cy). The proposed revisions associated with this permit modification will increase the capacity for Phases 1-3 and Landfill Expansion to 5,996,908 cy. The resulting additional capacity is 526,908 cy, a 9.6% increase in capacity. This information is summarized in the table below: Table 1-2 – Proposed Capacity Modification Area Permitted Capacity (cy) Proposed Additional Capacity (cy) Proposed Capacity (cy) Proposed Increase in Capacity Phases 1-3 and Landfill Expansion 5,470,000 526,908 5,996,908 9.6% Based on the 2017 grade contours and the permitted capacities for Phases 1, 2, and 3, approximately 23,703 cubic yards of capacity is remaining. Using an estimated density determination of 1,408 lbs/cubic yards based on waste received and the airspace used, Phases 1, 2, and 3 has approximately 16,687 tons of waste capacity remaining. At the average disposal rate for 2017 of 92,037 tons/year, approximately 0.2 years of life remain in the current landfill. Greenway Waste Solutions of Harrisburg, Inc. should be prepared to initiate waste disposal operations in a new area by July 2017 from April 2017. -10- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 This permit modification application proposes an additional 418,400 cubic yards of capacity based on proposed grading to the current landfill. Using the same average yearly disposal rate of 92,037 tons/year and the estimated density determination of 1,408 lbs/cubic yards, the estimated lifespan of the current landfill extends to 3.2 years from April 2017. Greenway Waste Solutions of Harrisburg, Inc. should be prepared to initiate waste disposal operations in a new area by July 2020. Remaining time for landfill operations is proportional to the incoming waste stream and density determination. Based on the permit application for Landfill Expansion of Highway 49 C&D Landfill approved on July 1, 2011 (Permit Number 1306), the estimated gross capacity of the expansion is 3,100,000 cubic yards. Based on the waste stream at the time the landfill expansion was approved, the facility was estimated to have approximately fifteen (15) years of operating life. Also, it was estimated that 1,000,000 cubic yards of soil will be excavated for construction of the entire landfill expansion footprint, with approximately 180,000 cubic yards of soil required for the final cover system. Approximately, 2,920,000 cubic yards of airspace was estimated to be used for waste and intermediate cover. Due to population, industrial, and commercial growth within the region, recycling efforts, or availability of other landfills, disposal rates and density determinations will vary. -11- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 3.0 ENGINEERING REPORT LANDFILL FACILITY INFORMATION The Greenway Waste Solutions of Harrisburg, Inc. Landfill is located in Cabarrus County, NC. The operating landfill is located just north of Harrisburg and accessed by Speedrail Court off of Highway 49. The Facility is bordered by Coddle Creek to the north and east which joins the Rocky River to the south. The original permit for the facility to construct Phase 1 was issued in 2000. The Permit to Operate for Phase 1 was issued in 2000, Permit to Construct Phase 2 to was issued in 2004. The Permit to Construct Phase 3 was issued in 2007, Permit to Operate Phases 1-3 and the Permit to Construct Phase I of the Landfill Expansion was issued in 2011. Filling operations in Phases 1-3 of the landfill is on-going. The landfill is currently comprised of three operating phases (Phases 1, 2 and 3) totaling approximately 25.8 acres and a proposed Expansion Area comprised of 3 additional phases (Phases I, II and III) totaling 36.8 acres. This Permit Application addresses the following items: 1. Permit Modification for Phases 1, 2 and 3: The modification includes the expansion of the permitted limits of waste to a total 29.4 acres, along with closure grade modifications and the addition of tack-on drainage swales in place of benches on the landfill side slopes. 2. Extension to Permit to Construct Phase I Expansion: Request extension to the Permit to Construct for the Phase I Expansion, dated July 1, 2011 (DIN 11248). 3. Permit Renewal for Phases 1, 2 and 3. 4. Permit Renewal for the Type 1 Compost Facility. -12- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 EROSION AND SEDIMENTATION CONTROL The Erosion and Sedimentation Control Plans were developed to meet all requirements set forth by the Sedimentation Pollution Control Law (15A NCAC 4), and other requirements set forth by NCDEQ. The Erosion and Sediment Control Plan was developed by others and no changes are proposed as part of this Permit Modification, extension of the Permit to Construct Phase I Expansion (July 1, 2011) and the Permit Renewal for the landfill. Temporary measures to be used on the site are temporary berms, ditches, and silt (sediment) fencing. These, along with the permanent sediment basins, permanent ditches and seeding make up all erosion control measures to be utilized on the site. The sediment basins shall be inspected at minimum weekly, and after each significant rain event (1/2-inch or greater). Sediment shall be removed and the basin restored to original dimensions after sediment has accumulated to one-half (1/2) of design volume indicated by cleanout stripe on riser structure. Removed sediment shall be placed in an area that has sediment controls in place. Sediment basin spillways, baffles, embankments and outlet control structure shall be inspected at the same time for erosion damage and piping (embankment only). All necessary repairs shall be made immediately to prevent basin failure. Silt fencing shall be inspected at least once per week and after every rainfall event. Any tears, cracks or overall failure should be repaired and/or replaced immediately. Sediment deposits shall be removed as necessary to ensure proper functioning of fencing. Silt fencing shall remain until final site stabilization has occurred. Permanent ditches should be seeded and matted immediately after their construction; they should be inspected after all rain events for any failure of the ditch or erosion control matting. All outlet protection measures used to protect channel vegetation from damage shall be inspected for wash out. All necessary repairs/replacements should be made immediately, and rip rap should be added where necessary. -13- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Embankment and landfill cover slopes shall be periodically inspected for erosion. The slopes shall be mowed no more than twice per year. The embankment slopes shall be re-fertilized in the second year unless vegetation growth is fully adequate. The damaged areas shall be re-seeded (permanent seeding for embankment slopes and temporary seeding for landfill cover slopes), fertilized and mulched immediately. Seeding, fertilizing and mulching shall be in accordance with the Erosion and Sedimentation control plan. STORMWATER CONVEYANCE AND MITIGATION This Landfill was exempted from the water quality control requirements of the Town of Harrisburg Stormwater Quality Ordinance as the Landfill is to be permitted under the existing NPDES Phase 1 Stormwater Permit for Industrial Activities. The stormwater permitting requirements and water quality control exemption was provided by the Town in a letter dated September 10, 2008. The letter was included in the Phase I Expansion Application to Construct prepared by BP Barber. The Town issued the following stormwater requirements for the development of the Phase I Expansion area: • Control and conveyance of post-construction runoff from the development by vegetated conveyances to the maximum extent practicable; • Compliance with section 15 of Article 4 of the Town's Unified Development Ordinance pertaining to preservation of natural areas along designated streams and rivers; • Control of the post-development discharges to pre-development levels for the 1-year and 10-year design storms; • Compliance with general engineering design criteria in accordance with 15A NCAC 2H .1008(c); • Requirement of recorded deeded restrictions or protective covenants to ensure the future land use of the development is maintained consistent with the approved stormwater management plan; and • An approved erosion and sediment control plan for land disturbances granted by Cabarrus County or NCDEQ. -14- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Stormwater calculations for the existing site stormwater attenuation and erosion control measures can be found in the previously-approved applications in support of the Permit to Construct Phase 1 (issued March 20, 2000), Permit to Construct Phase 2 (issued April 4, 2000) and the Permit to Construct Phase I Expansion (issued July 1, 2011). No significant changes to the permitted and constructed stormwater and erosion control measures are expected as part of the request(s) for Permit Modification, Extension of Permit to Construct the Expansion Area Phase I and/or Permit Renewal associated with this Engineering Plan. 3.3.1 Permit Modification Drainage Improvements The Permit modification includes the addition of tack-on drainage swales constructed along the landfill slope and permanent ditches at the toe of the landfill slopes. The permanent ditches are designed for erosion control purposes and stormwater conveyance to existing sediment basins. The ditches are to be vegetated with at least 90% landscaped cover at all times and will require matting with temporary erosion control blankets, until vegetated, as specified in the Permit Modification Drawings. Calculations were performed to ensure that the proposed “tack-on” drainage swales could convey stormwater run-off from the landfill face to downchutes which will discharge to perimeter swales and the existing sediment basins. Tack-on and perimeter swales were sized to intercept and convey slope drainage from the 25 year, 24 hour storm event. Stormwater run-off flows were calculated using the rational method. Based on the drainage basin map, the basin area for each tack-on swale will not exceed 2 acres and the basin area for each perimeter swale will not exceed 5 acres. In order to avoid failure due to high exit velocities from downchute pipes, downchute pipes will have energy dissipation devices such as anchored tees installed. Downchute pipes and ditches are to be inspected every six months or after every major storm event (1/2" or greater). Calculations, drawings and corresponding references can be found in Appendices B and C of the Permit Modification prepared by Civil & Environmental Consultants, Inc. (CEC) dated January 29, 2016. The addition of the tack-on swales do not affect the previously designed erosion control measures currently in place on the site. -15- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 STABILITY AND SETTLEMENT Settlement and stability calculations for the Phases 1, 2 and 3 and the Phase I Expansion can be found in the previously-approved applications in support of the Permit to Construct Phase 1 (issued March 20, 2000), Permit to Construct Phase 2 (issued April 4, 2000) and the Permit to Construct Phase I Expansion (issued July 1, 2011). No significant changes to the landfill location, design, construction and operations are requested for the for Permit Modification, Extension of Permit to Construct the Expansion Area Phase I and/or Permit Renewal associated with this Engineering Plan. DESIGN HYDROGEOLOGIC REPORT A Design Hydrogeologic Report for the Phases 1, 2 and 3 and the Phase I Expansion from the previously approved Permit to Construct Phase I Expansion (issued July 1, 2011) can be found in Appendix E of this report. The limits of waste for Phases 1, 2 and 3 as depicted in the Permit Modification have been expanded from the original permitted limits. The expanded limits are within 100 feet of original limits in all locations around the perimeter of the landfill. No significant changes to subsurface hydrogeologic conditions are expected in the expanded area from what was studied in original permit applications. CONSTRUCTION OF THE LANDFILL This landfill was designed in accordance with 15A NCAC 13B of the North Carolina Solid Waste Management Rules. Preparation and development of the landfill will require a number of activities including subgrade preparation, sediment and erosion control, and stormwater control. Changes to the design, construction and operations are requested for the Permit Modification, Extension of Permit to -16- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Construct the Expansion Area Phase I and/or Permit Renewal associated with this Engineering Plan. Description of materials and construction practices have been provided above in Section 3.2. 3.6.1 Final Cover System The standard closure cap system is designed to minimize infiltration and erosion and remains unchanged from the Phases 1, 2 and 3 and the Phase I Expansion currently approved PTC. To minimize infiltration the cap system will consist of 18 inches of soil having a permeability less than or equal to the soils underlying the landfill, or no greater than 1.0 X 10-5 cm/sec, whichever is less. The low permeability layer will be installed in two 9 inch lifts. To minimize erosion and to protect the low-permeability barrier from root penetration, 18 inches of earthen material that is capable of sustaining native plant growth will overlay the low-permeability layer. The vegetative layer will be installed in two 9 inch lifts and seeded according to the details on the closure drawings. A minimum five percent slope will be maintained for the top of the cell and the side slopes will not exceed three horizontal feet to one vertical foot. In addition, this permit application modifies the existing permitted closure system. The existing permitted final elevation contours for Phases 1, 2, and 3 depict 3:1 side slopes from the edge of waste to the top of the completed landfill. In addition, flat benches ten feet in width were to be constructed every 40 vertical feet along the face of the completed landfill slope. Stormwater conveyance swales were proposed on the benches to intercept stormwater run-off from the landfill slope face. The bench swales were to discharge to slope drains which feed into swales at the base of the landfill, then directed run-off towards permanent sediment control basins. The combination of benches with swales and slope drains reduced the sheet flow distance for stormwater run-off along the landfill slopes. The revised final elevation contours for Phases 1, 2 and 3 are shown in the Drawings, Sheet C400, of the Permit Modification prepared by Civil & Environmental Consultants, Inc. (CEC) dated January 29, 2016 (Appendices B and C). Calculations, drawings and corresponding references can be found in Appendices B and C of the Permit Modification prepared by Civil & Environmental -17- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Consultants, Inc. (CEC) dated January 29, 2016. The final elevation contours depict a 3:1 slope from the revised edge of waste line to the final top elevation of the landfill. All required buffers are maintained. The flat benches, as depicted in the permitted drawings, have been removed from the landfill face and replaced with “tack-on” drainage swales constructed on the landfill side slopes to intercept sheet flow run-off and convey the storm water to perimeter swales and sediment basins. There are no modifications proposed for the permanent sediment basins. The highest proposed elevation of the modified landfill Phases 1, 2 and 3 will be elevation 676 feet (NAVD 1988), which is less than the permitted top elevation for Phases 1, 2 and 3 of 710 feet. The edge of waste limits for Phases 1, 2 and 3 were adjusted slightly to maximize the proposed waste footprint, but still maintain compliance with all NC Solid Waste regulations and buffers. The revised limits are shown in the Drawings. The proposed modifications to Phases 1, 2 and 3 will result in additional 9.6% increase in capacity as discussed in Section 2.4. 3.6.2 Construction Quality Assurance Plan The Construction Quality Assurance (CQA) Plan can be seen in Appendix F in accordance with Rule .0541 of 15A NCAC 13B. The CQA report contains the construction quality assurance and construction quality control procedures. -18- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 4.0 CLOSURE PLAN CLOSURE CAP SYSTEM The permitted final cover system will remain unchanged from the previously approved PTC See section 3.6.1 Final Cover System. The standard closure cap system is designed to minimize infiltration and erosion and remains unchanged from the Phases 1, 2 and 3 and the Phase I Expansion currently approved PTC. To minimize infiltration the cap system will consist of 18 inches of soil having a permeability less than or equal to the soils underlying the landfill, or no greater than 1.0 X 10-5 cm/sec, whichever is less. The low permeability layer will be installed in two 9 inch lifts. To minimize erosion and to protect the low-permeability barrier from root penetration, 18 inches of earthen material that is capable of sustaining native plant growth will overlay the low-permeability layer. The vegetative layer will be installed in two 9 inch lifts and seeded according to the details on the closure drawings. A minimum five percent slope will be maintained for the top of the cell and the side slopes will not exceed three horizontal feet to one vertical foot. During the active life of the landfill facility, Phases 1, 2 and 3 have an estimated combined gross capacity of 2,370,000 cubic yards. Phases I, II and III Landfill Expansion have an estimated combined gross capacity of 3,100,000 cubic yards. (See Table 1-1, Capacity and Acreages in Section 2.4 of this report.) CONSTRUCTION OF CAP SYSTEM The post-settlement surface slopes will be a minimum of five percent and a maximum of 33 percent remains unchanged from the Phases 1, 2 and 3 and the Phase I Expansion currently approved PTC. CLOSURE SCHEDULE Prior to beginning closure activities the Division will be notified of the intent to close the unit and place such notification in the operating record. No later than 30 days after the date the unit -19- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 receives the known final receipt of waste, closure activities will commence unless an extension has been granted from the Division. The closure activities will be complete 180 days following the beginning of closure activities unless the Division grants an extension. Following closure of a unit, the Division will be notified that a certification signed by the project engineer verifying closure has been completed in accordance with the closure plan has been placed in the operating record. Following closure of the Construction and Demolition Landfill a notation on the deed to the facility property will be recorded with the local Register of Deeds office, or some other instrument that is normally examined during a title search and a copy of the notation will be placed in the operating record. The notation will in perpetuity notify any potential purchaser that the land has been used as a Construction and Demolition Landfill and is restricted under the closure plan approved by the Division. CLOSURE COST This closure plan estimates the largest area of the C&D landfill unit requiring the specified cap system at any time during the active life is approximately 29.4 acres. Appendix D is a summary of estimated cost for closure activities as required under Rule .0546 of SA NCAC 13B. -20- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 5.0 POST-CLOSURE PLAN POST-CLOSURE PLAN Following closure of each unit post-closure care will be conducted for 30 years unless: • It is decreased by the Division because it has been demonstrated that a reduced period is sufficient to protect human health and the environment; and • It is increased by the Division to protect human health and the environment. The owner, Greenway Waste Solutions of Harrisburg, Inc.'s representative, Mike Griffin will be responsible for the facility during the post-closure period. Mike Griffin Griffin Brothers Companies 19109 W Catawba Ave, Suite 100, Cornelius, NC 28031-5611 (704) 897-1226 POST-CLOSURE MAINTENANCE The final cover will be seeded, fertilized and mulched to provide a dense stand of grass consistent with the specification noted on the previously approved PTC plans. The grass should not be mowed more than twice a year until dense vegetation is established. The final cover will be inspected for signs of settlement, erosion, vector damage, and bare spots on a quarterly basis. Additional inspections will be performed after large storm events. Depressions in the cover that pond will be re-graded as needed to promote positive drainage. Areas subject to regrading or any bare spots will be reseeded in accordance with permanent seeding specification. Any deep-rooted vegetation will be removed so that deep-rooted vegetation will not compromise the integrity of the final cover. POST-CLOSURE MONITORING -21- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 The post-closure monitoring plan for groundwater and methane remains unchanged from the previously approved PTC. Appendix E Proposed Monitoring Plan consists of the approved Design Hydrogeological Report approved by NCDENR February 2010. PLANNED USE Once the facility is closed in accordance with Rule 0543 of SA NCAC 13B, the entire facility will be offered to the town of Harrisburg for possible use as a park and recreation facility. Throughout the post-closure care period, ditches, diversion berms, culverts, riprap, silt fence, and other drainage structures will be maintained according to the Permit Modification Drawings (Appendix B) and the Operations and Maintenance Plan (Appendix A). POST CLOSURE COST ESTIMATE Appendix D is a summary of estimated cost for post-closure activities as required under Rule .0546 of SA NCAC 13B. -22- Greenway Waste Solutions of Harrisburg, Inc. Landfill September, 2017 Table 5-1 - Post-Closure Inspection Checklist POST-CLOSURE INSPECTION CHECKLIST SITE NAME _________________________________________________________________ PERMIT NUMBER ___________________________________________________________ INSPECTOR ________________________________________________________________ QUARTER/YEAR ____________________________________________________________ DATE ______________________________________________________________________ ITEM COMPLIANCE STATUS IN OUT 1. Vegetative Cover 2. Soil Cover (no exposed liner) 3. Erosion and Sedimentation Control Ditches Maintained Silt Fence Maintained Riprap Maintained Pond Maintained 4. Condition of monitoring points (includes condition of casings, pads, locks, etc. Groundwater Wells Surface Water Points 5. Access to monitoring points (includes excessive siltation and/or vegetative growth) Groundwater Wells Surface Water Points Description of any corrective measures taken: __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ Inspector’s Signature APPENDIX A OPERATIONS AND MAINTENANCE PLAN North Carolina Board of Examiners For Engineers and Surveyors License No. C-3035 September 8, 2017 GREENWAY WASTE OF HARRISBURG, INC. PERMIT MODIFICATION OPERATIONS PLAN Prepared For: GREENWAY WASTE SOLUTIONS OF HARRISBURG, INC. 19109 WEST CATAWBA AVENUE, SUITE 200 CORNELIUS, NORTH CAROLINA 28031 Prepared By: CIVIL & ENVIRONMENTAL CONSULTANTS, INC. CHARLOTTE, NORTH CAROLINA CEC Project 111-370.002 SEPTEMBER 2017 -i- Highway 49 C&D Permit Modification Operations Plan September 2017 TABLE OF CONTENTS 1.0 INTRODUCTION..............................................................................................................1 1.1 General .................................................................................................................... 1 1.2 Purpose .................................................................................................................... 1 1.3 Reference Documents ............................................................................................. 2 1.4 Regulations ............................................................................................................. 3 1.5 Location .................................................................................................................. 3 2.0 OPERATIONAL DRAWINGS ........................................................................................4 3.0 WASTE ACCEPTANCE AND DISPOSAL REQUIREMENTS ..................................6 3.1 Asbestos Waste ....................................................................................................... 6 3.2 Waste Exclusions .................................................................................................... 6 3.3 Recycling Facility ................................................................................................... 8 3.3.1 Overview ......................................................................................................8 3.3.2 Contact Information .....................................................................................9 3.3.3 Recycling Facility Process ...........................................................................9 3.3.4 Holding Time for Recyclable .....................................................................10 3.3.5 Record Keeping Program ...........................................................................10 3.4 Other Recycling .................................................................................................... 11 3.4.1 White Goods ..............................................................................................11 3.4.2 Tires ...........................................................................................................11 3.4.3 Concrete/Inert Material ..............................................................................11 3.4.4 Shingles ......................................................................................................12 3.4.5 Wood Waste ...............................................................................................12 3.4.6 Gypsum Wallboard/Sheetrock Recycling ..................................................12 3.5 Mobile Home Deconstruction ............................................................................... 13 3.5.1 Overview ....................................................................................................13 3.5.2 Contact Information ...................................................................................14 3.5.3 Mobile Home Deconstruction Process .......................................................15 3.5.3.1 Access ......................................................................................15 3.5.3.2 Waste Disposal .........................................................................15 3.5.3.3 White Goods ............................................................................15 3.5.3.4 Asbestos ...................................................................................16 3.5.3.5 Deconstruction of Mobile Homes ............................................16 3.5.3.6 Holding Time for Mobile Homes ............................................16 3.5.3.7 Record Keeping Program .........................................................17 3.6 Composting Facility .............................................................................................. 17 3.7 Waste Screening .................................................................................................... 17 3.8 Random Load Inspections..................................................................................... 18 3.9 Cover, Spreading, and Compacting ...................................................................... 20 3.10 Air Criteria and Fire Control ................................................................................. 20 3.11 Access and Safety ................................................................................................. 20 3.12 Erosion and Sedimentation Control ...................................................................... 21 3.13 Stormwater Conveyance and Mitigation .............................................................. 22 3.13.1 Permit Modification Drainage Improvements ...........................................23 -ii- Highway 49 C&D Permit Modification Operations Plan September 2017 3.14 Operating Record and Recordkeeping Requirements ........................................... 24 FIGURES Figure 1 – Facility Map APPENDICES Attachment A – Composting Facility Permit Application -1- Highway 49 C&D Permit Modification Operations Plan September 2017 1.0 INTRODUCTION 1.1 GENERAL This document is the Operations Plan for the Greenway Waste Of Harrisburg, Inc. Construction & Demolition Landfill (Facility), located in Harrisburg, Cabarrus County, North Carolina. The Plan serves as a guide to the landfill operator with respect to routine landfill operations, environmental monitoring, and record keeping. The Facility is permitted to operate as a construction and demolition (C&D) landfill in accordance with North Carolina Department of Environmental Quality (NCDEQ), Division of Waste Management Permit Number 13-06. The Facility is expected to have a maximum operational waste acceptance rate of 120,000 tons per year. Equipment and staffing recommendations in this manual are based on these disposal rates and are subject to change in the event of future modification to waste acceptance rates at the Facility. 1.2 PURPOSE The Operations Plan is intended to serve as a site reference. Every employee should be acquainted with its contents and location at the site. Each section of this plan is self-contained, easily updated, and may be used in the field, for training sessions, or self-instruction. The operations manual addressed the following topics: Personnel requirements; Entrance procedures and recordkeeping; Incoming vehicle inspection; Traffic control Landfilling operations Equipment requirements; Operation and maintenance of environmental controls; Contingency and emergency procedures; and Safety practices and plan implementation. -2- Highway 49 C&D Permit Modification Operations Plan September 2017 This Operations Plan has been prepared in accordance with North Carolina Administrative Code (NCAC) Title 15A Section 13B .0542. Furthermore, the plan is based on engineering judgment and reflects generally accepted solid waste landfilling techniques. 1.3 REFERENCE DOCUMENTS This operations plan constitutes a portion of the Facility’s Permit to Operate Renewal Application. The entire Permit to Operate Renewal Application should be kept on file with this plan at the site to supplement this plan in terms of long-term facility development plans, monitoring requirements, engineering design, site hydrogeology, construction activities, and site closure and post–closure care. Other documents pertinent to facility operations and site development include: · North Carolina Solid Waste Management Rules, 15A NCAC 13B with current amendments; · North Carolina Erosion and Sediment Control Planning and Design Manual, NCDEQ, May 2013; · North Carolina Erosion and Sediment Control Field Manual, NCDEQ, July 2001; · Documents 1-12 of the Permit to Construct (Phase 2). Issued to Highway 49 C&D Landfill Inc., September 30, 2004; · Documents 1-13 of the previous Permit to Operate (Phase 2A). Issued to Highway 49 C&D Landfill Inc., February 4, 2005; · Modification to Current Operation Plan/Permit to Operate – Revised, Highway 49 C&D Landfill Inc., Cabarrus County, North Carolina. Prepared by: BP Barber Engineering. Prepared for: Highway 49 C&D Landfill Inc. February 15, 2007; · East Section of Phase 2 As-Built Subgrade Verification, Highway 49 C&D Landfill Inc., Cabarrus County, North Carolina. Prepared by: Chas. H. Sells, Inc. Prepared for: Highway 49 C&D Landfill Inc. August 9, 2007; · Operations Plan, Highway 49 C&D Landfill Inc., Cabarrus County, North Carolina. Prepared by: BP Barber Engineering. Prepared for: Highway 49 C&D Landfill Inc. August 29, 2007; -3- Highway 49 C&D Permit Modification Operations Plan September 2017 · Construction Plan Application and Composting Facility Permit Application for the Highway 49 Landfill. Prepared by BP Barber. Prepared for: Highway 49 C&D Landfill Inc. August, 2010; and · Operations Plan, Highway 49 C&D Landfill Inc., Cabarrus County, North Carolina. Prepared by: Brown and Caldwell. Prepared for: Highway 49 C&D Landfill Inc. June 3, 2011. 1.4 REGULATIONS Solid Waste Management Rules 15A NCAC 13B .500 and all conditions of the operating permit granted by the NCDEQ Division of Waste Management, shall take precedence and be complied with by landfill operators if there is an actual or perceived contradiction with the text of this plan, unless written consent for variance(s) is granted by the NCDEQ Division of Waste Management. The Facility supervisory staff should be familiar with the State Solid Waste Management Rules and the Facility permit(s). 1.5 LOCATION The Facility is located on Speedrail Court, in Harrisburg, North Carolina. Currently, landfilling operations are on-going at previously approved Phases 1-3. -4- Highway 49 C&D Permit Modification Operations Plan September 2017 2.0 OPERATIONAL DRAWINGS Figure 1 included in this report illustrates long-term operations of the facility on a topographical map consistent with Subparagraph (d)(2) of Rule .0537 15A NCAC 13B. The Permit Amendment Drawings in Appendix B and the Permit to Construct drawings from the 2010 Permit to Construct Permit Application (BP Barber) include all regulatory drawings. -5- Highway 49 C&D Permit Modification Operations Plan September 2017 FIGURE 1 - FACILITY MAP -6- Highway 49 C&D Permit Modification Operations Plan September 2017 3.0 WASTE ACCEPTANCE AND DISPOSAL REQUIREMENTS The Facility will 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 the C&DLF is not permitted to receive, including waste from outside the area the landfill is permitted to serve. 3.1 ASBESTOS WASTE Friable asbestos waste must be 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 Quality, 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 shown on Operation drawings: (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. Non-friable asbestos may be accepted consistent with normal operating procedures as set forth in a following section. 3.2 WASTE EXCLUSIONS The Facility will accept all types of wastes generated within approved service area except those prohibited by 15A NCAC 13B .0542 (e). Specifically, the following types of wastes will not be accepted: (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); -7- Highway 49 C&D Permit Modification Operations Plan September 2017 (3) Hazardous waste as defined in G.S. 130A-290(a)(8), to also include hazardous waste from conditionally exempt small quantity generators; (4) Industrial solid waste unless a demonstration has been made and approved by the Division that the landfill meets the requirements of Rule .0503(2)(d)(ii)(A); (5) Liquid wastes; (6) Medical waste as defined in G.S. 130A-290(a)(18); (7) Municipal solid waste as defined in G.S. 130A-290(a)(18a); (8) Polychlorinated biphenyls (PCB) wastes as defined in 40 CFR 761; (9) Radioactive waste as defined in G.S. 104E-5(14); (10) Septage as defined in G.S. 130A-290(a)(32), (11) Sludge as defined in G.S. 130A-290(a)(34); (12) Special wastes as defined in G.S. 130A-290(a)(40); (13) White goods as defined in G.S. 130A-290(a)(44); (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; (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; -8- Highway 49 C&D Permit Modification Operations Plan September 2017 (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; and (B) Requires generators or collectors of C&D waste to recycle that type or form of C&D waste. 3.3 RECYCLING FACILITY A Recycling Facility will be operated on site. The facility consists of approximately two (2) acres and is located within the Landfill Facility boundary. The approximately 17,000 square foot Facility is an enclosed structure and receives mixed C&D loads of material. The waste acceptance will be consistent with Section 3.2 of this document. The facility includes an open paved area for parking, the structure itself, and a pole barn for storage. 3.3.1 Overview This Operations Manual was prepared for the Recycling Facility located within the Facility (Highway 49) boundary. The Recycling Facility is strictly for the processing of C&D material in order to recycle materials. Highway 49 plans to recycle as many varieties of materials as practical as end users are available. Initially, scrap metal recycling, wood waste, sheetrock, corrugated cardboard roofing shingles and inert materials will be recycled. Gypsum/sheetrock is currently being managed in the Recycling Center, but will accept scrap metal recycling, wood waste, sheetrock, corrugated cardboard roofing shingles and inert materials for recycling in the Recycling Center, based on market conditions. Once an end-user of another material (i.e. glass) is located, these other materials may be recycled. Any non-recyclable material will be disposed of appropriately by Highway 49 upon completion of the recycling process. The information contained herein was prepared to provide landfill personnel with a clear understanding of how the facility would be operated. While deviations from the operations outlined -9- Highway 49 C&D Permit Modification Operations Plan September 2017 here may be acceptable, they should be reviewed and approved by the Design Engineer and the Highway 49 Solid Waste Manager. 3.3.2 Contact Information All correspondence and questions concerning the operation of the Recycling Facility should be directed to the appropriate County and State personnel listed below. For fire or police emergencies dial 911. North Carolina Department of Environment al Quality North Carolina Department of Environmental Quality 610 E Center Ave Mooresville, NC 28115 Phone: (704) 663-1699 Fax (704)663-6040 Division of Waste Management (DWM) – Solid Waste Section: Western Area Supervisor: Deborah Aja Permitting Engineer: Allen Gaither Waste Management Specialist: Teresa Bradford Division of Land Resources - Land Quality Section: Regional Engineer: Zahid Kahn, PE 3.3.3 Recycling Facility Process Selected in-coming loads will be weighed at the existing scalehouse and directed to the Facility. All in-coming loads to the Facility will be unloaded under the cover of the structure and all processing will be indoors. The recycled material will be loaded into transport trailers within the structure. There will be no uncovered storage of unprocessed material outside of the structure. Out- -10- Highway 49 C&D Permit Modification Operations Plan September 2017 going loads will be weighed at the existing scalehouse. Liquids, if any, will not be released from the covered structure. Any non-recyclable material will be disposed of appropriately by Highway 49. 3.3.4 Holding Time for Recyclable Once a recyclable material is removed from the C&D loads, it may be stockpiled within the Facility for up to 30 days. No materials shall be kept in this area for more than 30 days, nor shall they be stockpiled in other areas waiting recycling. Temporary storage of inert material may be stored uncovered outside of the structure and other materials such as concrete, wood waste, shingles, metals may be relocated to the temporary stockpile areas adjacent to the landfill working face as indicated on the attached site plan. Additional recovered material will be stored in a pole barn on site. 3.3.5 Record Keeping Program Highway 49 shall maintain the following records related to the Recycling Facility in an operating record at the landfill: A. Weight of C&D loads processed; B. Weight of C&D loads unrecoverable; and C. Date and disposal information for all recycled materials tons include location and vendor of recipient of recycled materials. The operating record will be kept up to date and reconciled on a monthly basis by the Landfill Manager or his designee. It will be presented upon request to DWM for inspection. A copy of this Operations Manual will be kept at the landfill and will be available for use at all times. -11- Highway 49 C&D Permit Modification Operations Plan September 2017 3.4 OTHER RECYCLING In addition to the Recycling Facility, incoming C&D waste will be recycled as much as practical. Stockpile areas will be located near, but clearly segregated from the working face. These stockpile areas will be kept in a clean orderly fashion. Incoming waste with easily identified recyclables will be unloaded in a recycling area close to the working face. Metals pulled from the load will be placed in the on-site metal recycling container. Clean cardboard will be removed and transported to an on-site bailer. 3.4.1 White Goods White goods will be handled in accordance with all State and Federal regulations. Material from the Recycling Facility may also be stored in this stockpile. Any white goods containing CFC’s will have them managed properly prior to removal of the white goods. 3.4.2 Tires Stockpiled tires will be covered and handled in accordance with all State and Federal regulations. There will be a designated container on site at all times for tires removed from the working face for final disposal at a properly permitted facility. Material from the Recycling Facility may also be stored in this stockpile. Tires will not be stockpiled for a time period exceeding 30 days. The stockpile will be in an enclosed trailer or covered area. 3.4.3 Concrete/Inert Material Inert debris such as brick, concrete, concrete block, rock, etc. will be removed and transported to the reprocessing/material storage area for crushing. Material from the Recycling Facility may also be stored in this stockpile. The material will be stockpiled in a pile not to exceed 500 tons for periodic crushing. -12- Highway 49 C&D Permit Modification Operations Plan September 2017 3.4.4 Shingles Shingles will be stockpiled on site for recycling. The stockpile area will be close to the working face, but clearly segregated from it. Material from the Recycling Facility may also be stored in this stockpile. The grinding of shingles will be done by properly permitted third party resources. The stockpile of shingles will not exceed 500 tons. The ground shingles will be transported off- site to a properly permitted third party end- user. 3.4.5 Wood Waste Wood waste consisting of pallets, dimension lumber, and similar non-treated material will be stockpiled on site for recycling. The stockpile area will be close to the working face, but clearly segregated from it. Material from the Recycling Facility may also be stored in this stockpile. The stockpile of wood waste will not exceed 500 tons. 3.4.6 Gypsum Wallboard/Sheetrock Recycling A gypsum wallboard/sheetrock recycling area will be operated on site. The area will be an enclosed pole building and receive only “clean” source separated material including off- specification material from manufacturers. In-coming loads will be weighed at the existing scalehouse and directed to the area. Segregated loads of some gypsum products may be directed to the gypsum reprocessing area, as shown on Drawing C100. Gypsum products/Sheetrock may also be recycled in the Recycling Center. The material is deposited on the ground and stockpiled outdoors but is covered with weighted tarps to keep the material dry awaiting processing. When grinding is necessary to develop outgoing product, the Horizontal Grinder is used to grind the gypsum product to a 2 inch minus material. This product is further refined with a Sandvik Tir-Screener to further enhance the marketability gypsum product to meet the end users specifications. The fine material has a direct feed conveyor that discharges the material into a Pole Structure that is tarped on all sides. This is performed for two reasons; 1) the product must remain dry at all times because the low moisture -13- Highway 49 C&D Permit Modification Operations Plan September 2017 content is required by our client and 2) the fine material has the highest dust emissions potential. By discharging this material in the building it eliminates the dust generated by coming off the end of the conveyor and stockpiling on the ground. The larger more coarse product (much less dust potential), is screened leaving some of the original wall board paper backing intact is discharged from the other conveyor line is covered by tarps for transportation to another end user. The fine material is stored in the Pole building awaiting transportation to the final end user. At no time will stockpiled unprocessed sheetrock exceed 600 tons. The processed material will be stored in bunkers consisting of fine screenings, medium screenings, and coarse/paper screenings. Out-going loads will be weighed at the existing scalehouse. At no time will stockpiled material exceed 600 tons. The facility recycles the in-coming material from Griffin Brothers Reclamation Centers and other sources. 3.5 MOBILE HOME DECONSTRUCTION 3.5.1 Overview This Operations Manual was prepared for Mobile Home Deconstruction Area. The Mobile Home Deconstruction Area is strictly for the deconstruction of mobile homes in order to recycle materials from the mobile homes. Highway 49 plans to recycle as many varieties of materials as possible as end users are available. Initially, scrap metal recycling will be conducted. Once an end-user of another material (i.e. glass) is located, these other materials may be recycled. Any non-recyclable material will be disposed of appropriately by Highway 49 upon completion of the deconstruction process. The information contained herein was prepared to provide landfill personnel with a clear understanding of how the facility would be operated. While deviations from the operations outlined here may be acceptable, they should be reviewed and approved by the Design Engineer and the Highway 49 Solid Waste Manager. -14- Highway 49 C&D Permit Modification Operations Plan September 2017 3.5.2 Contact Information All correspondence and questions concerning the operation of the Highway 49 Mobile Home Deconstruction Area should be directed to the appropriate County and State personnel listed below. For fire or police emergencies dial 911. North Carolina Department of Environmental Quality North Carolina Department of Environmental Quality 610 E Center Ave Mooresville, NC 28115 Phone: (704) 663-1699 Fax (704)663-6040 Division of Waste Management (DWM) - Solid Waste Section: Western Area Supervisor: Deborah Aja Permitting Engineer: Allen Gaither Management Specialist: Teresa Bradford Division of Land Resources - Land Quality Section: Regional Engineer: Zahid Kahn, PE -15- Highway 49 C&D Permit Modification Operations Plan September 2017 3.5.3 Mobile Home Deconstruction Process Mobile homes will be deconstructed using the processes outlined below. 3.5.3.1 Access Mobile home owners seeking disposal will contact the Landfill and be placed on a waiting list. No more than Two (2) mobile homes will be allowed on-site for deconstruction at one time. Once space is available for a mobile home, the scale operator at the landfill will contact the next owner on the waiting list. The owner will have a 48 hour window in which to contact the Landfill with information regarding the delivery date and hauler. If owner cannot arrange delivery within this initial 48-hour period, the owner may make alternate arrangements for delivery and must notify the Landfill a minimum of 48 hours prior to planned delivery. The delivered mobile home will not be weighed on the scales at time of delivery, but the owner will be charged based upon the size and dimensions of the mobile home. If delivery is not made within 48 hours of the scheduled delivery date, the owners name will be placed on the waiting list and the owner will be notified. If an owner has more than one mobile home, they will be rotated with others on the waiting list. 3.5.3.2 Waste Disposal All mobile homes must be free of garbage, household hazardous waste, and all other non- construction and demolition waste prior to acceptance by the landfill. 3.5.3.3 White Goods White goods will be accepted with the mobile home. White goods will be removed using a track- hoe and handled in accordance with all State and Federal regulations. Any white goods containing CFC’s will have them managed properly prior to removal of the white goods, and deconstruction of the mobile home. -16- Highway 49 C&D Permit Modification Operations Plan September 2017 3.5.3.4 Asbestos Since asbestos may be located in the building materials of mobile homes constructed prior to 1983, all mobile homes built before January 1, 1983 will be thoroughly sprayed with water (both interior and exterior) to minimize dust. Upon demolition of a mobile home constructed prior to 1983, the waste generated will be placed in the C&D landfill and covered with six inches of soil or approved alternate daily cover. 3.5.3.5 Deconstruction of Mobile Homes Once accepted, the mobile home will be placed in the mobile home deconstruction area. Mobile home deconstruction will be dependent upon weather conditions and manpower availability and will ONLY take place in the deconstruction area. Prior to deconstruction, mobile homes constructed before 1983 will be thoroughly sprayed with water to minimize dust (as noted above). The home will then be deconstructed using a track-hoe. The track-hoe will tear the trailer apart and lay the pieces on the ground to be separated by landfill personnel. The personnel will separate the non-recyclable materials from the recyclable materials. Initially, scrap metal is planned for recycling. As other end-users for other materials are available, other materials may be separated for recycling. All material not planned for recycling will be placed in the C&D landfill before the end of the day in which the deconstruction takes place. Material from mobile homes constructed prior to 1983 will be covered prior to the end of the day. All recyclable materials will be stockpiled in the deconstruction area for future recycling. No open flames or cutting with torches will be allowed within 100 feet of the C&D landfill. 3.5.3.6 Holding Time for Mobile Homes All mobile homes must be deconstructed within 45 days from acceptance into the deconstruction area. Upon receipt at the landfill, the date shall be painted on the side or end of the mobile home, or on the frame, for identification purposes for Solid Waste Section personnel. -17- Highway 49 C&D Permit Modification Operations Plan September 2017 3.5.3.7 Record Keeping Program Highway 49 shall maintain the following records related to the Mobile Home Deconstruction in an operating record at the landfill: A. Mobile Home Acceptance records including dates and description; B. Owner and hauler information for each mobile home; C. Date of deconstruction for each mobile home and materials to be recycled; D. Date and disposal information for all recycled materials tons include location and vendor of recipient of recycled materials; and E. Date and certification of CFC’s removed. The operating record will be kept up to date by the Solid Waste Director or his designee. It will be presented upon request to DWM for inspection. A copy of this Operations Manual will be kept at the landfill and will be available for use at all times. 3.6 COMPOSTING FACILITY The composting facility Permit Application included in Appendix A provides detailed site design, construction, and operation information. 3.7 WASTE SCREENING The landfill operator shall be responsible for screening wastes to ensure that hazardous or unacceptable wastes are not disposed in the landfill. Screening of wastes (load inspections) shall be accomplished as follows: Informal load checking will be the responsibility of all employees, particularly those that work at the entrance area and those that work at or near the active fill area. Each employee will observe vehicles entering the Facility and landfill for any potentially unauthorized waste and will alert management personnel if any unauthorized wastes are suspected. Through the waste collection programs, there will be several checkpoints: -18- Highway 49 C&D Permit Modification Operations Plan September 2017 Facility Entrance – Only authorized vehicles and material will be allowed beyond the scales. The scale attendant will refuse entry to any unauthorized vehicles or vehicles observed carrying unauthorized waste. Active face checkpoints – All incoming loads of waste will be observed by the equipment operators as it is discharged at the active face Checkpoints during compaction at active face – Material will be inspected by the landfill compactor operator as it is compacted at the active face. 3.8 RANDOM LOAD INSPECTIONS In addition to the visual inspections performed by the equipment operator/attendants, a random inspection program shall be implemented to detect and prevent disposal of any of the unauthorized wastes listed in previously. Inspections conducted as part of this program shall be performed by personnel trained in the following areas: methods for identification and determination of unauthorized wastes, handling procedures for unauthorized wastes, record keeping requirements of the program, and occupational health and safety. Inspection personnel shall also have a thorough understanding of the North Carolina Hazardous Waste Management Regulations (15A NCAC 13A) and the North Carolina Regulated Medical Waste Management Regulations (15 NCAC 13B .1203). 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 unauthorized waste. Inspections should be performed at the minimum of the following frequency: Once a week. The inspections also need to be random. The time of day and day of week shall vary between inspections. The transporter/hauler selected for inspection shall also vary between inspections. The procedure for the inspection 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; -19- Highway 49 C&D Permit Modification Operations Plan September 2017 - If possible, perform a visual observation of the waste prior to unloading. If unauthorized waste is observed, or suspected, the vehicle shall be prohibited from unloading, and shall be directed out of the facility; - If no unauthorized 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 unauthorized waste is identified, the waste shall be transferred to the working face for disposal; - If unauthorized waste is identified in the load, and the unauthorized 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; and - 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 will safely identify the nature of the unauthorized 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 NCDEQ 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 unauthorized waste. The Division will be informed in writing of the incident and steps taken to properly dispose of the unauthorized waste. Management of this Facility reserves the right to establish acceptance criteria and procedures for certain non-municipal solid wastes. These may be more restrictive than required by law based on -20- Highway 49 C&D Permit Modification Operations Plan September 2017 quantities and characteristics of the waste stream, current operating status of the landfill, and characteristics of waste streams previously received. Acceptability will be based on judgment of the landfill operator’s technical personnel with respect to regulatory requirements, physical and chemical qualities and other technical considerations. 3.9 COVER, SPREADING, AND COMPACTING The working face will be restricted to the smallest area feasible and compacted as densely as feasible. Any area that exceeds one-half (1/2) acre will be covered with six (6) inches of earthen material at least once weekly. Cover may be placed at more frequent intervals if necessary to control disease, vectors, fires, odors, blowing litter, and scavenging. Areas where additional waste will not receive waste for three (3) months, but will receive additional waste in the future will be covered and stabilized with vegetative cover or other stabilizing material. Appropriate methods including fencing and diking will be used to confine wind-blown solid waste. At the end of each day, wind-blown waste will be collected and disposed of in the landfill. 3.10 AIR CRITERIA AND FIRE CONTROL No open burning of waste will be permitted on site. The Division will be notified verbally within 24 hours and in writing with 15 days of any fire and/or explosion at the facility. If a fire occurs at the landfill, the Harrisburg Fire Department will be notified. Hot loads that are brought to the facility will be immediately dumped away from the landfill and the fire department notified. The hot load will be sprayed down with water until extinguished. The load is then to be reloaded for disposal in the landfill. 3.11 ACCESS AND SAFETY The site has controlled access with the use of entrance gates. The entrance gates allow entry to the currently operating landfill located to the west of the expansion area. The same entrance will be -21- Highway 49 C&D Permit Modification Operations Plan September 2017 used for access to the expansion area, and will remain gated. Access to the expansion area is restricted to the entrance gate only. Coddle Creek prevents access to the site from the north and the east, while the currently operating landfill (with fencing and wooded buffer) prevents access from the west. Access to the site from the south is also restricted by a wooded buffer. Access roads are all-weather construction and will be maintained in good condition. A scalehouse is located at the entrance with an attendant present during operational hours. The attendant is responsible for evaluating loads to assure compliance with operation requirements and to direct the loads to the appropriate location on site—landfill, recycling/processing area, or composting facility. In addition, signs are posted to direct loads to the appropriate area. Dust is controlled on access roads through the use of a water truck. Signs are posted indicating that liquid, hazardous, and municipal wastes are prohibited. 3.12 EROSION AND SEDIMENTATION CONTROL The Erosion and Sedimentation Control Plans were developed to meet all requirements set forth by the Sedimentation Pollution Control Law (15A NCAC 4), and other requirements set forth by NCDEQ. The Erosion and Sediment Control Plan was developed by others and no changes are proposed as part of this Permit Modification, extension of the Permit to Construct Phase I Expansion (July 1, 2011) and the Permit Renewal for the landfill. Temporary measures to be used on the site are temporary berms, ditches, and silt (sediment) fencing. These, along with the permanent sediment basins, permanent ditches and seeding make up all erosion control measures to be utilized on the site. The sediment basins shall be inspected at minimum weekly, and after each significant rain event (1/2-inch or greater). Sediment shall be removed and the basin restored to original dimensions after sediment has accumulated to one-half (1/2) of design volume indicated by cleanout stripe on riser structure. Removed sediment shall be placed in an area that has sediment controls in place. Sediment basin spillways, baffles, embankments and outlet control structure shall be inspected at -22- Highway 49 C&D Permit Modification Operations Plan September 2017 the same time for erosion damage and piping (embankment only). All necessary repairs shall be made immediately to prevent basin failure. Silt fencing shall be inspected at least once per week and after every rainfall event. Any tears, cracks or overall failure should be repaired and/or replaced immediately. Sediment deposits shall be removed as necessary to ensure proper functioning of fencing. Silt fencing shall remain until final site stabilization has occurred. Permanent ditches should be seeded and matted immediately after their construction; they should be inspected after all rain events for any failure of the ditch or erosion control matting. All outlet protection measures used to protect channel vegetation from damage shall be inspected for wash out. All necessary repairs/replacements should be made immediately, and rip rap should be added where necessary. Embankment and landfill cover slopes shall be periodically inspected for erosion. The slopes shall be mowed no more than twice per year. The embankment slopes shall be re-fertilized in the second year unless vegetation growth is fully adequate. The damaged areas shall be re-seeded (permanent seeding for embankment slopes and temporary seeding for landfill cover slopes), fertilized and mulched immediately. Seeding, fertilizing and mulching shall be in accordance with the Erosion and Sedimentation control plan. 3.13 STORMWATER CONVEYANCE AND MITIGATION This Landfill was exempted from the water quality control requirements of the Town of Harrisburg Stormwater Quality Ordinance as the Landfill is to be permitted under the existing NPDES Phase 1 Stormwater Permit for Industrial Activities. The stormwater permitting requirements and water quality control exemption was provided by the Town in a letter dated September 10, 2008. The letter was included in the Phase I Expansion Application to Construct prepared by BP Barber. The Town issued the following stormwater requirements for the development of the Phase I Expansion area: -23- Highway 49 C&D Permit Modification Operations Plan September 2017 • Control and conveyance of post-construction runoff from the development by vegetated conveyances to the maximum extent practicable; • Compliance with section 15 of Article 4 of the Town's Unified Development Ordinance pertaining to preservation of natural areas along designated streams and rivers; • Control of the post-development discharges to pre-development levels for the 1-year and 10-year design storms; • Compliance with general engineering design criteria in accordance with 15A NCAC 2H .1008(c); • Requirement of recorded deeded restrictions or protective covenants to ensure the future land use of the development is maintained consistent with the approved stormwater management plan; and • An approved erosion and sediment control plan for land disturbances granted by Cabarrus County or NCDEQ. Stormwater calculations for the existing site stormwater attenuation and erosion control measures can be found in the previously-approved applications in support of the Permit to Construct Phase 1 (issued March 20, 2000), Permit to Construct Phase 2 (issued April 4, 2000) and the Permit to Construct Phase I Expansion (issued July 1, 2011). No significant changes to the permitted and constructed stormwater and erosion control measures are expected as part of the request(s) for Permit Modification, Extension of Permit to Construct the Expansion Area Phase I and/or Permit Renewal associated with this Engineering Plan. 3.13.1 Permit Modification Drainage Improvements The Permit modification includes the addition of tack-on drainage swales constructed along the landfill slope and permanent ditches at the toe of the landfill slopes. The permanent ditches are designed for erosion control purposes and stormwater conveyance to existing sediment basins. The ditches are to be vegetated with at least 90% landscaped cover at all times and will require matting with temporary erosion control blankets, until vegetated, as specified in the Permit Modification Drawings. Calculations were performed to ensure that the proposed “tack-on” drainage swales could convey stormwater run-off from the landfill face to downchutes which will discharge to perimeter swales and the existing sediment basins. Tack-on and perimeter swales were sized to intercept and convey -24- Highway 49 C&D Permit Modification Operations Plan September 2017 slope drainage from the 25 year, 24 hour storm event. Stormwater run-off flows were calculated using the rational method. Based on the drainage basin map, the basin area for each tack-on swale will not exceed 2 acres and the basin area for each perimeter swale will not exceed 5 acres. In order to avoid failure due to high exit velocities from downchute pipes, downchute pipes will have energy dissipation devices such as anchored tees installed. Downchute pipes and ditches are to be inspected every six months or after every major storm event (1/2" or greater). Calculations, drawings and corresponding references can be found in Appendices B and C of the Permit Modification prepared by Civil & Environmental Consultants, Inc. (CEC) dated January 29, 2016. The addition of the tack-on swales do not affect the previously designed erosion control measures currently in place on the site. 3.14 OPERATING RECORD AND RECORDKEEPING REQUIREMENTS The owner and operator will record and retain at the facility or an alternative location the following information: - Records for random waste inspections, monitoring results, certifications of training, and training procedures; - Amount of recycled material recovered from in-coming waste. (Weighed as exported from the site). Amount of waste received at the facility and county of generation; - Any demonstration, certification, finding, monitoring, testing, or analytical data required by Rules 15A NCAC 13B.0544 through .0545; - Any closure or post-closure monitoring, testing, or analytical data as required by Rule 15A NCAC 13B.0543; - Cost estimates for closure and post-closure; - Notation of date and time of placement of cover material; and - All audit records, compliance records, and inspection reports. All information contained in the operating record will be furnished to the Division upon request or made available for inspection by the division. The operating record will also include a copy of all approved permits and Monitoring Plans. ATTACHMENT A COMPOSTING FACILITY PERMIT APPLICATION April 3, 2018 North Carolina Board of Examiners For Engineers and Surveyors License No. C-3035 GREENWAY WASTE SOLUTIONS OF HARRISBURG, INC. COMPOSTING FACILITY PERMIT APPLICATION Prepared For: Greenway Waste Solutions of Harrisburg, Inc. 19109 West Catawba Avenue, Suite 200 Cornelius, North Carolina 28031 Prepared By: CIVIL & ENVIRONMENTAL CONSULTANTS, INC. CHARLOTTE, NORTH CAROLINA CEC Project 111-370.002 MARCH 2018 -i- Greenway Waste Solutions of Harrisburg, Inc. Landfill March, 2018 TABLE OF CONTENTS Page 1.0 GENERAL PROVISIONS ................................................................................................1 Project Description.................................................................................................. 1 Site Requirements ................................................................................................... 2 2.0 FACILITY DESIGN ..........................................................................................................2 Site Development .................................................................................................... 2 3.0 DESIGN REPORT.............................................................................................................3 Design Capacity ...................................................................................................... 3 Material Processing ................................................................................................. 3 Temperature Monitoring ......................................................................................... 5 Temperature Control ............................................................................................... 6 Service Area ............................................................................................................ 6 Equipment Requirements ........................................................................................ 6 4.0 CONTAINMENT AND ENVIRONMENTAL CONTROL SYSTEM .........................6 Groundwater Considerations .................................................................................. 6 Controlling Nuisances and Vectors ........................................................................ 7 5.0 C&D LANDFILL DEVELOPMENT, GENERAL OPERATION AND MAINTENANCE ...........................................................................................................................7 Plan and Permit Requirements ................................................................................ 7 Hours of Operation ................................................................................................. 7 Drop- Off Area ........................................................................................................ 8 Windrow Processing ............................................................................................... 8 Adverse Weather Conditions .................................................................................. 9 Flow Diagram ......................................................................................................... 9 Contingency Plan .................................................................................................... 9 6.0 FACILTY OPERATION ................................................................................................10 Training of Facility Personnel .............................................................................. 10 Entrance ................................................................................................................ 10 Access and Security .............................................................................................. 10 Signs ...................................................................................................................... 11 Waste Acceptance ................................................................................................. 11 Dust, Litter, Odors, and Vectors ........................................................................... 12 Landscaping Maintenance .................................................................................... 12 -1- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 1.0 GENERAL PROVISIONS PROJECT DESCRIPTION This Application to renew the Type 1 Composting Facility permit for the Greenway Waste Solutions of Harrisburg, Inc. Landfill is being submitted by Civil and Environmental consultants, Inc. on behalf of Greenway Waste Solutions of Harrisburg, Inc. This application meets the composting facility design parameters, contraction requirements, and design drawing requirements found in Section .1400 of 15A NCAC 13B of the North Carolina Department of Environment Quality (NCDEQ) Solid Waste Management Rules. This application package includes information regarding the site design, construction and operation. Project Title: Greenway Waste Solutions of Harrisburg, Inc. Composting Facility Owner: Greenway Waste Solutions of Harrisburg, Inc. 19109 West Catawba Avenue Suite 200 Cornelius, North Carolina 28031 (704) 897-1226 Owner's Representative: John Brown Consulting Engineer: Civil and Environmental Consultants, Inc. 1900 Center Park Drive Suite A Charlotte, NC 28217 Consulting Engineer’s Scott L. Brown, P.E. Representative: -2- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 Proposed Site Operator: Greenway Waste Solutions of Harrisburg, Inc. 19109 West Catawba Avenue Suite 200 Cornelius, North Carolina 28031 (704) 897-1226 Operator’s Representative: John Brown The Greenway Waste Solutions of Harrisburg, Inc. Landfill Composting Facility is located at 2105 Speedrail Court, in Harrisburg, NC. Renewal for the composting permit is being sought. The composting facility will be relocated as shown on the Site Plan in Appendix A, and consists of land totaling 5 acres. Access to the site is provided via Speedrail Court. The property is owned by Greenway Waste Solutions of Harrisburg, Inc. and the facility will be operated by Greenway Waste Solutions of Harrisburg, Inc. Mr. John Brown (Telephone (704) 897-1226) will be responsible for daily operations. SITE REQUIREMENTS The composting facility will not be located over a closed-out disposal facility. This can be confirmed by viewing the Site Plan in Appendix A. The surrounding area consists of woods and vegetation. Existing ground surface elevations of the proposed composting area range from 608 to 640 feet, mean sea level (MSL). The property surrounding the composting area is owned by the Greenway Waste Solutions of Harrisburg, Inc. and others. The applicable buffer requirements are met (see Site Development section 2.1 below) where the composting facility is surrounded by others. 2.0 FACILITY DESIGN SITE DEVELOPMENT -3- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 The site is not currently located within an existing flood plain, nor shall the proposed design result in washout of solid waste such as to pose a hazard to human life, wildlife, land or water resources. The composting facility will be located, as required, fifty (50) feet from any property boundary delineating parcels of land not owned by Greenway Waste Solutions of Harrisburg, Inc. A two hundred (200) foot minimum buffer between compost areas and residences or dwellings not owned or occupied by the permittee will be maintained at all times. A fifty (50) foot buffer zone will be maintained between the composting area and perennial streams/rivers. A twenty-five (25) foot minimum buffer will be maintained between compost areas and swales or berms to allow for adequate access of fire fighting equipment. The composting facility shall be located in accordance with 15A NCAC 2B .0200, Classification and Water Quality Standards Applicable to Surface Waters in North Carolina. The site will not cause a discharge of materials or fill materials into waters of the State that would be in violation of Section(s) 404, and 402 of the Clean water Act, or in violation of the requirements of the National Pollutant Discharge Elimination System (NPDES). The site will not cause non-point source pollution of waters of the state that violates assigned water quality standards. The site shall not contravene groundwater standards as established under 15A NCAC 2L. The portion of the site designated for active composting will have a soil texture finer than loamy sand, and a depth to the seasonal high water table shall be maintained of at least twelve (12) inches, (Type 1 facility). 3.0 DESIGN REPORT DESIGN CAPACITY The design capacity of the facility is approximately 20,000 cubic yards per year. MATERIAL PROCESSING -4- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 This section provides general material processing information. Detailed operations are illustrated on the flow diagram on Page 13 of this report. Compost (grass clippings and loose leaves) Grass clippings generated by the Town of Harrisburg will be received free of charge, unless other agreements are made. All material shall be transported through the scales for weighing verification. The material will then be transported to the drop-off area for unloading. The grass clippings and leaves will be segregated in compost windrows. Product mixing will include some soil and mulch fines to enhance nitrification. The compost produced will be available to the Town of Harrisburg or Cabarrus County residents free of charge. Land-clearing debris (tree limbs, tree stumps, etc.) Land-clearing debris will be transported in bulk loads and weighed at the scale house. The material will then be transported to the drop-off areas. The debris will be routed to temporary stockpiles in the reprocessing areas. This debris material will also be stored in windrows for proper management. The material will be scheduled for grinding every quarter or when windrow storage capacity reaches 3,000 cubic yards. A tub grinder will be transported to the site to produce mulch from the material. The mulch products will then be placed in the windrows for storage. All windrow mulch products will be power screened for fines separation and topsoil generation. The mulch produced will be used on-site to supplement erosion control measures. As with the compost produced, the mulch material will be offered to the Town of Harrisburg and local residents of Cabarrus County free of charge. Soil from land-clearing debris Topsoil from root balls of stumps will be removed prior to grinding and stockpiled separately. The fines from mulch screening will be mixed with the topsoil removed from the root balls, and power -5- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 screened to refine the product type. The material will then be windrowed for storage. This material will be used to improve cover soils for hydro-seeding. Also, some of the topsoil products will be offered to the Town of Harrisburg and local residents for use in landscaping. Aggregate (Crushed inert debris such as brick, block, concrete, etc.) Segregated loads of clean inert debris will be weighed at the scalehouse and transported to the temporary storage areas. This material is not to be placed in the windrows. This material will be scheduled for processing every quarter, or when storage capacity reaches 2,000 cubic yards. A Bohringer Eagle rock crusher, which is rated at less than 100 tons per hour, will be used for processing inert materials. This product will be used on-site for construction of the haul roads. TEMPERATURE MONITORING The compost is monitored on a monthly basis for temperature. For compost windrows that have been in storage for thirty (30) days or longer, the temperature is to be monitored on a weekly basis. The temperature probes will be placed in the compost to document and measure temperature generations. The recorded temperature will be used to ensure that the minimum temperature of 131º F for three (3) days is maintained for the compost. Should the recorded temperature fall below the 131º F temperature specified, pathogen testing will be performed to ensure pathogen levels are in the required range. The procedure utilized for temperature recording is random testing of all stored compost in windrows at the frequencies mentioned above. Each composting windrow will be monitored with a compost thermometer, which has a 48-inch probe to ensure that all areas inside the windrow can be measured. Each probe measurement will be obtained at fifty (50) foot intervals utilizing the full length of the probe. Each probe will be monitored for a period of approximately five minutes, or until the temperature reading has stabilized. Each monitoring event will be recorded on a monitoring chart. The probe will be verified twice daily at the same location for temperature -6- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 recordation. If necessary, additional windrow turning will be performed for the compost to bring the temperature up to the required 131º F for three days. TEMPERATURE CONTROL Windrow turning is performed on the compost once to twice monthly. The compost is turned using a front-end loader. If temperatures for the compost windrows fall below the 131º F required for three days, additional windrow turning will be performed. In addition to windrow turning, adding a mixture of grass clippings with the wood chips and leaves will increase biodegradation. If additional turning does not bring temperatures to the desired range, ammonium nitrate may be added to improve biodegradation. SERVICE AREA The Greenway Waste Solutions of Harrisburg, Inc. Landfill composting will continue to service Cabarrus, Mecklenburg, Union, Stanly, and Rowan Counties. EQUIPMENT REQUIREMENTS The facility will be operated with equipment used by the facility owner to maintain and operate the existing C&D landfill. 4.0 CONTAINMENT AND ENVIRONMENTAL CONTROL SYSTEM GROUNDWATER CONSIDERATIONS A minimum of twelve (12) inches will be maintained to the seasonal high water table. -7- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 CONTROLLING NUISANCES AND VECTORS Potential nuisances affecting the area surrounding the landfill’s composting facility include odor, dust, fires, blowing litter, sedimentation, and vectors. Potential vectors include rodents, birds, and other scavengers. A water truck will be used to control dust emissions on borrow areas, haul roads and at the working face. This equipment will be used on an as-needed basis. Open burning is not permitted at the landfill. In the event of a fire in the debris, the burning materials will be covered with a soil cover if the fire is deemed manageable. If the fire is determined to be unmanageable for landfill personnel, the local fire department will be notified. Fences will be used to control blowing litter. Routine inspection and policing of the facility will be conducted to ensure that litter will not pose a nuisance or hazard. Odors and vectors are not expected to be problematic. 5.0 C&D LANDFILL DEVELOPMENT, GENERAL OPERATION AND MAINTENANCE PLAN AND PERMIT REQUIREMENTS All construction documents and plans of the permit shall be followed. A copy of the plans, permits, and operational reports shall be maintained at the office at all times. HOURS OF OPERATION -8- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 The Greenway Waste Solutions of Harrisburg, Inc. Landfill and its composting facility will maintain operating hours between 7:30 AM and 5:30 PM Monday through Saturday. Saturday hours may be reduced depending on waste stream. The facility will be closed on the following holidays: New Year’s Day Labor Day Memorial Day Thanksgiving Day Independence Day Christmas Day A sign or signs identifying the owner, operator, telephone number, NCDEQ permit number, types of waste accepted and the landfill operating hours will be posted at the entrance to the landfill. DROP- OFF AREA The drop-off area will be located within the composting areal limits, which are shown on the Site Plan in Appendix A. Material is to be separated at the drop-off area by type. Signs designating the types of material such as “Grass Clippings and Leaves,” “Land Clearing Debris,” “Topsoil” and “Aggregate” shall be posted at the drop-off area. An inspector shall be located at the drop-off area to inspect each incoming load. Waste that does not meet the criteria for the acceptable materials shall be disposed of in an on-site waste container for future disposal at a permitted municipal solid waste landfill. WINDROW PROCESSING The majority of material that is stored in the windrows does not require turning. The compost itself takes an extended period to process. The windrows containing compost are to be turned once to twice monthly. The composting matter is to remain in the windrows for approximately three to six months for aging prior to use. -9- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 ADVERSE WEATHER CONDITIONS Processing, loading, and storage of mulch, aggregate, and compost are done regardless of the weather conditions. The topsoil products may require covered storage. The drop-off area and entrance have all-weather roadways. The roadways shall be kept clear during periods of snowfall. Tub grinding and screening may be stopped during periods of high winds, should dust become an issue. Dust shall be controlled on the roadways as described in Section 6.6. FLOW DIAGRAM Please refer to the attached Flow Diagram on Page 13 of this report. CONTINGENCY PLAN Should an instance of on-site equipment failure or temporary shut down of the facility occur, all incoming loads of material shall be stockpiled at the drop-off area. Overflow stockpiling is available in the previously approved composting area. On-site, no open burning of material is permitted. Should accidental fires occur, equipment and stockpiled soil shall be provided to control them. Any occurrence of fire at the facility shall be reported to the NCDEQ Division of Waste Management within 24 hours, and written notification shall be submitted by the Operations Manager within 15 days. Should a fire occur at the facility, the local fire department (Harrisburg Fire Department) shall be notified. Loads that are hot shall be removed immediately and placed away from the facility and the fire department shall be notified. Said loads shall be sprayed down with water until the fire and/or combustion is extinguished. The load shall then be reloaded for disposal in the landfill. The Harrisburg Fire Department is aware of this proposed facility. Should a fire occur they have agreed to respond to the site. -10- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 6.0 FACILTY OPERATION TRAINING OF FACILITY PERSONNEL The proposed management team and site operation staff are properly trained to execute important tasks such as the following: 1. Monitoring of incoming wastes 2. Identification of unauthorized wastes 3. Accurate recording of accepted wastes 4. Safe equipment operation The management team includes Mr. John Brown, owner’s representative. ENTRANCE The existing entrance and haul roads for the Greenway Waste Solutions of Harrisburg, Inc. Landfill will be used to access the Greenway Waste Solutions of Harrisburg, Inc. Composting Facility. ACCESS AND SECURITY The site has controlled access with the use of entrance gates. The entrance gates allow entry to the currently operating landfill located to the west of the composting facility. The same entrance will be used for access to the composting facility, and will remain gated. Access to the composting facility is restricted to the entrance gate only. Coddle Creek prevents access to the site from the north and the east, while the currently operating landfill (with fencing and wooded buffer) prevents -11- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 access from the west. Access to the site from the south is also restricted by a wooded buffer. Access roads are all-weather construction and will be maintained in good condition. A scalehouse is located at the entrance with an attendant present during operational hours. The attendant is responsible for evaluating loads to assure compliance with operation requirements and to direct the loads to the appropriate location on site—landfill, recycling/processing area, or composting facility. In addition, signs are posted to direct loads to the appropriate area. Dust is controlled on access roads through the use of a water truck. Signs are posted indicating that liquid, hazardous, and municipal wastes are prohibited. SIGNS Existing signs are provided at the existing site entrance and show the contact name, telephone number, permit number, and the landfill operating hours. Information on disposal procedures and wastes that cannot be accepted is also provided. Traffic signs will be provided as needed to direct customers and to promote orderly traffic flow to and from the disposal areas. WASTE ACCEPTANCE The Greenway Waste Solutions of Harrisburg, Inc. Compost Facility will accept yard trash as defined in 30A-290(a)(45) (solid waste consisting solely of vegetative matter resulting from landscaping maintenance). All yard trash will be composted. The following waste will be accepted: 1. Grass clippings, loose leaves, etc. 2. Tree limbs, stumps, etc. 3. Soil from land clearing debris 4. Aggregate (crushed inert debris such as brick, block, or concrete) The Greenway Waste Solutions of Harrisburg, Inc. Compost Facility cannot accept the following wastes. Further, the following wastes cannot be processed into the compost: -12- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 1. Hazardous waste nor asbestos containing waste 2. Household hazardous waste 3. Any compost made from solid waste The Operations Manager will notify the NCDEQ Division of Waste Management within twenty- four (24) hours of an attempt to dispose of any of the forbidden waste products. DUST, LITTER, ODORS, AND VECTORS Dust, litter, odors, and vectors are discussed in Section 4.2. Dust generated by composting operation will be controlled or reduced by: 1. Application of water via the irrigation system provided along the existing access road or by using a water truck. 2. Regular removal of mud and dirt from the paved roads. 3. Vegetating of final cover and borrow areas as soon as practical. Blowing litter will be reduced or controlled by: 1. Limiting the size of the active working area. 2. Utilization of litter fences. 3. Policing of the area. Odors and vectors are not expected to be problematic. If environmental problems associated with the landfill are detected and confirmed by NCDEQ, Greenway Waste Solutions of Harrisburg, Inc. will submit to NCDEQ for review and approval a corrective action plan and a schedule of compliance for implementing the plan. LANDSCAPING MAINTENANCE Landscaping maintenance will include the existing entrance. An irrigation system is used to water the grassed and planted areas. Grass is mowed as needed and any distressed areas will be fertilized -13- Greenway Waste Solutions of Harrisburg, Inc. Landfill March 2018 or replanted. Planted shrubbery and trees will be fertilized and mulched at least two (2) times per year STATION 6 – AGGREGATE STORAGE STATION 2 – MATERIALS STORAGE STATION 5 – COMPOST WINDROWS STATION 4 – MULCH & TOPSOIL WINDROWS STATION 3 – MOBILE UNITS (POWER SCREEN, TUB GRINDER, ROCK CRUSHER) STATION 1 – RECYCLING & REPROCESSING DROP-OFF ARE FLOW DIAGRAM APPENDIX B DRAWINGS 8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO REVISION RECORD www.cecinc.com 1900 Center Park Drive - Suite A - Charlotte, NC 28217 Ph: 980.237.0373 · Fax: 980.237.0372 DATE: DWG SCALE: DRAWN BY: CHECKED BY: APPROVED BY: PROJECT NO:SHEETOFDRAWING NO.:COVER SHEET 111-370.002 N.T.S. JANUARY 2016 CTH NTB TMG15C000 GREENWAY WASTE SOLUTIONS OF HARRISBURG, INC. PERMIT MODIFICATION HARRISBURG, NC NORTHRaleighFranklinAshevilleForest CityLenoirBooneElkinClemmonsWinston-SalemGreensboroEdenRoxboroEdentonWilliamstonGreenvilleWashingtonNew BernGoldsboroWilsonCarySmithfieldFayettevilleClintonWilmingtonPinehurstCharlotteSalisburyGastoniaKannapolisHickoryAhoskieRockinghamLong BeachJacksonvilleMorehead CityKill Devil HillsLIST OF DRAWINGSC000COVER SHEETC001OVERALL SITE PLANC100EXISTING SITE CONDITIONSC200PROPOSED LANDFILL CLOSURE GRADING PLANC300PROPOSED LANDFILL CLOSURE DRAINAGE BASIN MAPC400DETAILSNORTHNORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035 PHASE 3(6.8 AC.)PHASE 2(11.5 AC.)PHASE 1(11.1 AC.)CURRENT C&D LANDFILLEXPANSION AREA 1(SEE APPENDIX G FOREXPANSION APPLICATION )8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO REVISION RECORD www.cecinc.com 1900 Center Park Drive - Suite A - Charlotte, NC 28217 Ph: 980.237.0373 · Fax: 980.237.0372 DATE: DWG SCALE: DRAWN BY: CHECKED BY: APPROVED BY: PROJECT NO:SHEETOFDRAWING NO.:OVERALL SITE PLAN 111-370.002 1"=200' JANUARY 2018 CTH/PAB NTB TMG1A5C001 GREENWAY WASTE SOLLUTIONS OF HARRISBURG, INC. PERMIT MODIFICATION HARRISBURG, NC NORTHNORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035GENERAL NOTES CURRENT C&D LANDFILLPHASE 1PHASE 2PHASE 3EXPANSION AREA 1(SEE APPENDIX G FOREXPANSION APPLICATION)8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO REVISION RECORD www.cecinc.com 1900 Center Park Drive - Suite A - Charlotte, NC 28217 Ph: 980.237.0373 · Fax: 980.237.0372 DATE: DWG SCALE: DRAWN BY: CHECKED BY: APPROVED BY: PROJECT NO:SHEETOFDRAWING NO.:EXISTING SITE CONDITIONS 111-370.002 1"=100' JANUARY 2016 CTH NTB TMG25C100 GREENWAY WASTE SOLLUTIONS OF HARRISBURG, INC. PERMIT MODIFICATION HARRISBURG, NC NORTHNORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035GENERAL NOTES CURRENT C&D LANDFILLPHASE 1PHASE 2PHASE 38AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO REVISION RECORD www.cecinc.com 1900 Center Park Drive - Suite A - Charlotte, NC 28217 Ph: 980.237.0373 · Fax: 980.237.0372 DATE: DWG SCALE: DRAWN BY: CHECKED BY: APPROVED BY: PROJECT NO:SHEETOFDRAWING NO.:PROPOSED LANDFILL CLOSURE GRADING PLAN 111-370.002 1"=100' JANUARY 2016 CTH NTB TMG35C200 GREENWAY WASTE SOLUTIONS OF HARRISBURG, INC. PERMIT MODIFICATION HARRISBURG, NCNORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035NORTH CURRENT C&D LANDFILLPHASE 1PHASE 2PHASE 38AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO REVISION RECORD www.cecinc.com 1900 Center Park Drive - Suite A - Charlotte, NC 28217 Ph: 980.237.0373 · Fax: 980.237.0372 DATE: DWG SCALE: DRAWN BY: CHECKED BY: APPROVED BY: PROJECT NO:SHEETOFDRAWING NO.:PROPOSED DRAINAGE BASIN PLAN GRADING PLAN 111-370.002 1"=100' JANUARY 2016 CTH NTB TMG45C300 GREENWAY WASTE SOLLUTIONS OF HARRISBURG, INC. PERMIT MODIFICATION HARRISBURG, NCNORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035NORTH 8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO REVISION RECORD www.cecinc.com 1900 Center Park Drive - Suite A - Charlotte, NC 28217 Ph: 980.237.0373 · Fax: 980.237.0372 DATE: DWG SCALE: DRAWN BY: CHECKED BY: APPROVED BY: PROJECT NO:SHEETOFDRAWING NO.:DETAILS 111-370.002 VARIES JANUARY 2016 CTH NTB TMG55C400 GREENWAY WASTE SOLLUTIONS OF HARRISBURG LLC PERMIT MODIFICATION HARRISBURG, NC BC400BC400NORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035 APPENDIX C ENGINEERING CALCULATIONS CALCULATIONS TACK ON SWALES Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:8% SLOPE TACK ON SWALE Date:1/12/2016 8% SLOPE TACK ON SWALE 1.76 0.40 5.0 8.05 5.67 * LARGEST DRAINAGE AREA TO SWALE Rational Runoff Basin Composite C *Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Wednesday, Jan 27 2016 8% TACK ON SWALE Trapezoidal Bottom Width (ft) = 2.00 Side Slopes (z:1) = 2.00, 3.00 Total Depth (ft) = 2.00 Invert Elev (ft) = 666.00 Slope (%) = 8.00 N-Value = 0.081 Calculations Compute by: Known Q Known Q (cfs) = 5.67 Highlighted Depth (ft) = 0.59 Q (cfs) = 5.670 Area (sqft) = 2.05 Velocity (ft/s) = 2.77 Wetted Perim (ft) = 5.19 Crit Depth, Yc (ft) = 0.51 Top Width (ft) = 4.95 EGL (ft) = 0.71 0 2 4 6 8 10 12 14 16 Elev (ft)Depth (ft)Section 665.50 -0.50 666.00 0.00 666.50 0.50 667.00 1.00 667.50 1.50 668.00 2.00 668.50 2.50 669.00 3.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: 8% TACK ON SWALE Discharge 5.67 Peak Flow Period 0.08 Channel Slope 0.08 Channel Bottom Width 2 Left Side Slope 2 Right Side Slope 3 Low Flow Liner Retardance Class C Vegtation Type Bunch Type Vegetation Density Fair 50-75% Soil Type Clay Loam SC250 - Class C - Bunch Type - Fair 50-75% Phase Reach DischargeVelocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern SC250 Unvegetated Straight5.67 cfs 4.63 ft/s 0.41 ft 0.04 3 lbs/ft2 2.03 lbs/ft2 1.48 STABLE E SC250 Reinforced Vegetation Straight5.67 cfs 2.8 ft/s 0.59 ft 0.081 10 lbs/ft2 2.92 lbs/ft2 3.42 STABLE E Underlying Substrate Straight5.67 cfs 2.8 ft/s 0.59 ft -- 0.8 lbs/ft2 0.398 lbs/ft2 2.01 STABLE -- Page 1 of 2 1/27/2016http://www.ecmds.com/print/analysis/77786/77811 Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:TOP OF LANDFILL DIVERSION DITCH Date:1/12/2016 TOP OF LANDFILL DIVERSION DITCH 3.81 0.40 5.0 8.05 12.27 *LARGEST DRAINAGE AREA Rational Runoff Ditch Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Thursday, Jan 28 2016 TOP OF LANDFILL DIVERSION DITCH Trapezoidal Bottom Width (ft) = 6.00 Side Slopes (z:1) = 2.00, 3.00 Total Depth (ft) = 2.50 Invert Elev (ft) = 634.00 Slope (%) = 0.06 N-Value = 0.073 Calculations Compute by: Known Q Known Q (cfs) = 12.27 Highlighted Depth (ft) = 1.94 Q (cfs) = 12.27 Area (sqft) = 21.05 Velocity (ft/s) = 0.58 Wetted Perim (ft) = 16.47 Crit Depth, Yc (ft) = 0.48 Top Width (ft) = 15.70 EGL (ft) = 1.95 0 2 4 6 8 10 12 14 16 18 20 22 24 Elev (ft)Depth (ft)Section 633.50 -0.50 634.00 0.00 634.50 0.50 635.00 1.00 635.50 1.50 636.00 2.00 636.50 2.50 637.00 3.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: TOP OF LANDFILL DIVERSION DITCH Discharge 12.27 Peak Flow Period 0.08 Channel Slope .06 Channel Bottom Width 6 Left Side Slope 2 Right Side Slope 3 Low Flow Liner Retardance Class C Vegtation Type Mix (Sod & Bunch) Vegetation Density Fair 50-75% Soil Type Clay Loam SC250 - Class C - Mix (Sod & Bunch) - Fair 50-75% Phase Reach DischargeVelocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern SC250 Unvegetated Straight 12.27 cfs 4.43 ft/s 0.4 ft 0.04 3 lbs/ft2 1.48 lbs/ft2 2.02 STABLE E SC250 Reinforced Vegetation Straight 12.27 cfs 2.96 ft/s 0.56 ft 0.073 10 lbs/ft2 2.1 lbs/ft2 4.76 STABLE E Underlying Substrate Straight 12.27 cfs 2.96 ft/s 0.56 ft -- 0.8 lbs/ft2 0.235 lbs/ft2 3.4 STABLE -- Page 1 of 2 1/28/2016http://www.ecmds.com/print/analysis/77786/84842 Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Slope Name: TACK ON SWALE OUTSIDE SLOPE Country United States State/Region North Carolina City Charlotte Annual R Factor 175 Adjusted R Factor 21 Total Slope Length 30 Protection Type Permanent Protection Period 3 Beginning Month January Slope Gradient (H:1) 3 Soil Type Clay Loam K Factor 0.210 Reach 1 Start: 0ft End: 30ft Vegetation Type: Mix (Both Sod/Bunch)(50-75%) Material ASL bare ASL mat MSL bare MSL mat Soil Loss Tolerance SF Remarks Staple / App Rate Estb. Veg. 0.658 in 0.028 in 0 in 0 in 0.03 in 1.085 STABLE -- SC150 0.06 in 0.002 in 0.103 in 0.004 in 0.25 in 71.295 STABLE B Page 1 of 2 1/28/2016http://www.ecmds.com/print/analysis/77786/77863 DOWNCHUTES Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:DOWNCHUTE 1 FLOW Date:1/12/2016 DOWNCHUTE 1 3.28 0.40 5.0 8.05 10.56 Rational Runoff Downchute Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Thursday, Jan 28 2016 DOWNCHUTE 1 Trapezoidal Bottom Width (ft) = 5.00 Side Slopes (z:1) = 3.00, 3.00 Total Depth (ft) = 2.00 Invert Elev (ft) = 652.00 Slope (%) = 33.00 N-Value = 0.040 Calculations Compute by: Known Q Known Q (cfs) = 10.56 Highlighted Depth (ft) = 0.25 Q (cfs) = 10.56 Area (sqft) = 1.44 Velocity (ft/s) = 7.35 Wetted Perim (ft) = 6.58 Crit Depth, Yc (ft) = 0.47 Top Width (ft) = 6.50 EGL (ft) = 1.09 0 2 4 6 8 10 12 14 16 18 20 22 Elev (ft)Depth (ft)Section 651.50 -0.50 652.00 0.00 652.50 0.50 653.00 1.00 653.50 1.50 654.00 2.00 654.50 2.50 655.00 3.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: DOWNCHUTE 1 Discharge 10.56 Peak Flow Period 0.08 Channel Slope 0.33 Channel Bottom Width 5 Left Side Slope 3 Right Side Slope 3 Low Flow Liner Retardance Class Vegtation Type Vegetation Density Soil Type Clay Loam Rock Riprap Phase Reach DischargeVelocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern Rock Riprap Unvegetated Straight 10.56 cfs 7.6 ft/s 0.24 ft 0.04 6 lbs/ft2 5 lbs/ft2 1.2 STABLE -- Page 1 of 2 1/28/2016http://www.ecmds.com/print/analysis/77786/78782 Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:DOWNCHUTE 2 FLOW Date:1/12/2016 DOWNCHUTE 2 7.84 0.40 5.0 8.05 25.24 Rational Runoff Downchute Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Wednesday, Jan 27 2016 DOWNCHUTE 2 Trapezoidal Bottom Width (ft) = 5.00 Side Slopes (z:1) = 3.00, 3.00 Total Depth (ft) = 2.00 Invert Elev (ft) = 650.00 Slope (%) = 33.00 N-Value = 0.040 Calculations Compute by: Known Q Known Q (cfs) = 25.24 Highlighted Depth (ft) = 0.41 Q (cfs) = 25.24 Area (sqft) = 2.55 Velocity (ft/s) = 9.88 Wetted Perim (ft) = 7.59 Crit Depth, Yc (ft) = 0.79 Top Width (ft) = 7.46 EGL (ft) = 1.93 0 2 4 6 8 10 12 14 16 18 20 22 Elev (ft)Depth (ft)Section 649.50 -0.50 650.00 0.00 650.50 0.50 651.00 1.00 651.50 1.50 652.00 2.00 652.50 2.50 653.00 3.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: DOWNCHUTE 2 Discharge 25.24 Peak Flow Period 0.08 Channel Slope 0.33 Channel Bottom Width 5 Left Side Slope 3 Right Side Slope 3 Low Flow Liner Retardance Class Vegtation Type Vegetation Density Soil Type Clay Loam Rock Riprap Phase Reach Discharge Velocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern Rock Riprap Unvegetated Straight 25.24 cfs 10.18 ft/s 0.4 ft 0.04 9 lbs/ft2 8.24 lbs/ft2 1.09 STABLE -- Page 1 of 2 1/27/2016http://www.ecmds.com/print/analysis/77786/78783 Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:DOWNCHUTE 3 FLOW Date:1/12/2016 DOWNCHUTE 3 6.52 0.40 5.0 8.05 20.99 Rational Runoff Downchute Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Wednesday, Jan 27 2016 DOWNCHUTE 3 Trapezoidal Bottom Width (ft) = 5.00 Side Slopes (z:1) = 3.00, 3.00 Total Depth (ft) = 2.00 Invert Elev (ft) = 638.00 Slope (%) = 33.00 N-Value = 0.040 Calculations Compute by: Known Q Known Q (cfs) = 20.99 Highlighted Depth (ft) = 0.37 Q (cfs) = 20.99 Area (sqft) = 2.26 Velocity (ft/s) = 9.28 Wetted Perim (ft) = 7.34 Crit Depth, Yc (ft) = 0.71 Top Width (ft) = 7.22 EGL (ft) = 1.71 0 2 4 6 8 10 12 14 16 18 20 22 Elev (ft)Depth (ft)Section 637.50 -0.50 638.00 0.00 638.50 0.50 639.00 1.00 639.50 1.50 640.00 2.00 640.50 2.50 641.00 3.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: DOWNCHUTE 3 Discharge 20.99 Peak Flow Period 0.08 Channel Slope 0.33 Channel Bottom Width 5 Left Side Slope 3 Right Side Slope 3 Low Flow Liner Retardance Class Vegtation Type Vegetation Density Soil Type Clay Loam Rock Riprap Phase Reach Discharge Velocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern Rock Riprap Unvegetated Straight 20.99 cfs 9.58 ft/s 0.36 ft 0.04 8 lbs/ft2 7.42 lbs/ft2 1.08 STABLE -- Page 1 of 2 1/27/2016http://www.ecmds.com/print/analysis/77786/78785 Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:DOWNCHUTE 4 FLOW Date:1/12/2016 DOWNCHUTE 4 0.88 0.40 5.0 8.05 2.83 Rational Runoff Downchute Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Wednesday, Jan 27 2016 DOWNCHUTE 4 Trapezoidal Bottom Width (ft) = 5.00 Side Slopes (z:1) = 3.00, 3.00 Total Depth (ft) = 2.00 Invert Elev (ft) = 666.00 Slope (%) = 33.00 N-Value = 0.040 Calculations Compute by: Known Q Known Q (cfs) = 2.83 Highlighted Depth (ft) = 0.12 Q (cfs) = 2.830 Area (sqft) = 0.64 Velocity (ft/s) = 4.40 Wetted Perim (ft) = 5.76 Crit Depth, Yc (ft) = 0.21 Top Width (ft) = 5.72 EGL (ft) = 0.42 0 2 4 6 8 10 12 14 16 18 20 22 Elev (ft)Depth (ft)Section 665.50 -0.50 666.00 0.00 666.50 0.50 667.00 1.00 667.50 1.50 668.00 2.00 668.50 2.50 669.00 3.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: DOWNCHUTE 4 Discharge 2.83 Peak Flow Period 0.08 Channel Slope 0.33 Channel Bottom Width 5 Left Side Slope 3 Right Side Slope 3 Low Flow Liner Retardance Class Vegtation Type Vegetation Density Soil Type Clay Loam Rock Riprap Phase Reach DischargeVelocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern Rock Riprap Unvegetated Straight2.83 cfs 4.74 ft/s 0.11 ft 0.04 4 lbs/ft2 2.31 lbs/ft2 1.73 STABLE -- Page 1 of 2 1/27/2016http://www.ecmds.com/print/analysis/77786/78792 PERIMETER DITCHES Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:PERIMETER DITCH 1 Date:1/12/2016 PERIMETER DITCH 1 5.68 0.40 5.0 8.05 18.29 Rational Runoff Ditch Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Wednesday, Jan 27 2016 PERIMETER DITCH 1 Trapezoidal Bottom Width (ft) = 5.00 Side Slopes (z:1) = 3.00, 3.00 Total Depth (ft) = 2.00 Invert Elev (ft) = 640.00 Slope (%) = 2.50 N-Value = 0.067 Calculations Compute by: Known Q Known Q (cfs) = 18.29 Highlighted Depth (ft) = 0.91 Q (cfs) = 18.29 Area (sqft) = 7.03 Velocity (ft/s) = 2.60 Wetted Perim (ft) = 10.76 Crit Depth, Yc (ft) = 0.66 Top Width (ft) = 10.46 EGL (ft) = 1.02 0 2 4 6 8 10 12 14 16 18 20 22 Elev (ft)Depth (ft)Section 639.50 -0.50 640.00 0.00 640.50 0.50 641.00 1.00 641.50 1.50 642.00 2.00 642.50 2.50 643.00 3.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: PERIMETER DITCH 1 Discharge 18.29 Peak Flow Period 0.08 Channel Slope 0.025 Channel Bottom Width 5 Left Side Slope 3 Right Side Slope 3 Low Flow Liner Retardance Class C Vegtation Type Mix (Sod & Bunch) Vegetation Density Fair 50-75% Soil Type Clay Loam SC250 - Class C - Mix (Sod & Bunch) - Fair 50-75% Phase Reach DischargeVelocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern SC250 Unvegetated Straight 18.29 cfs 4 ft/s 0.66 ft 0.037 3 lbs/ft2 1.02 lbs/ft2 2.93 STABLE E SC250 Reinforced Vegetation Straight 18.29 cfs 2.63 ft/s 0.9 ft 0.067 10 lbs/ft2 1.41 lbs/ft2 7.1 STABLE E Underlying Substrate Straight 18.29 cfs 2.63 ft/s 0.9 ft -- 0.8 lbs/ft2 0.13 lbs/ft2 6.17 STABLE -- Page 1 of 2 1/28/2016http://www.ecmds.com/print/analysis/77786/77813 Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:PERIMETER DITCH 2 Date:1/12/2016 PERIMETER DITCH 2 3.58 0.40 5.0 8.05 11.53 Rational Runoff Ditch Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Wednesday, Jan 27 2016 PERIMETER DITCH 2 Triangular Side Slopes (z:1) = 3.00, 2.00 Total Depth (ft) = 1.50 Invert Elev (ft) = 575.00 Slope (%) = 8.60 N-Value = 0.054 Calculations Compute by: Known Q Known Q (cfs) = 11.53 Highlighted Depth (ft) = 0.99 Q (cfs) = 11.53 Area (sqft) = 2.45 Velocity (ft/s) = 4.71 Wetted Perim (ft) = 5.34 Crit Depth, Yc (ft) = 1.06 Top Width (ft) = 4.95 EGL (ft) = 1.33 0 1 2 3 4 5 6 7 8 9 10 Elev (ft)Depth (ft)Section 574.50 -0.50 575.00 0.00 575.50 0.50 576.00 1.00 576.50 1.50 577.00 2.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: PERIMETER DITCH 2 Discharge 11.53 Peak Flow Period 0.08 Channel Slope 0.086 Channel Bottom Width 0 Left Side Slope 3 Right Side Slope 2 Low Flow Liner Retardance Class Vegtation Type Vegetation Density Soil Type Clay Loam Rock Riprap Phase Reach Discharge Velocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern Rock Riprap Unvegetated Straight 11.53 cfs 4.79 ft/s 0.98 ft 0.054 6 lbs/ft2 5.27 lbs/ft2 1.14 STABLE -- Page 1 of 2 1/27/2016http://www.ecmds.com/print/analysis/77786/78026 Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:PERIMETER DITCH 3 Date:1/12/2016 PERIMETER DITCH 3 1.50 0.40 5.0 8.05 4.83 Rational Runoff Basin Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Friday, Jan 15 2016 PERIMETER DITCH 3 Triangular Side Slopes (z:1) = 3.00, 2.00 Total Depth (ft) = 2.00 Invert Elev (ft) = 560.00 Slope (%) = 3.50 N-Value = 0.090 Calculations Compute by: Known Q Known Q (cfs) = 4.83 Highlighted Depth (ft) = 1.02 Q (cfs) = 4.830 Area (sqft) = 2.60 Velocity (ft/s) = 1.86 Wetted Perim (ft) = 5.51 Crit Depth, Yc (ft) = 0.75 Top Width (ft) = 5.10 EGL (ft) = 1.07 0 1 2 3 4 5 6 7 8 9 10 11 12 Elev (ft)Depth (ft)Section 559.50 -0.50 560.00 0.00 560.50 0.50 561.00 1.00 561.50 1.50 562.00 2.00 562.50 2.50 563.00 3.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: PERIMETER DITCH 3 Discharge 4.83 Peak Flow Period 0.08 Channel Slope 0.035 Channel Bottom Width 0 Left Side Slope 3 Right Side Slope 2 Low Flow Liner Retardance Class C Vegtation Type Mix (Sod & Bunch) Vegetation Density Fair 50-75% Soil Type Clay Loam Unreinforced Vegetation - Class C - Mix (Sod & Bunch) - Fair 50-75% Phase Reach DischargeVelocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern Unreinforced Vegetation Straight4.83 cfs 1.87 ft/s 1.02 ft 0.09 4.2 lbs/ft2 2.22 lbs/ft2 1.89 STABLE -- Underlying Substrate Straight4.83 cfs 1.87 ft/s 1.02 ft -- 0.05 lbs/ft2 0.027 lbs/ft2 1.88 STABLE -- Page 1 of 2 1/15/2016http://www.ecmds.com/print/analysis/77786/78389 Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:PERIMETER DITCH 4 Date:1/12/2016 PERIMETER DITCH 4 8.35 0.40 5.0 8.05 26.89 Rational Runoff Ditch Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Wednesday, Jan 27 2016 PERIMETER DITCH 4 Triangular Side Slopes (z:1) = 3.00, 2.00 Total Depth (ft) = 2.50 Invert Elev (ft) = 554.00 Slope (%) = 3.50 N-Value = 0.053 Calculations Compute by: Known Q Known Q (cfs) = 26.89 Highlighted Depth (ft) = 1.59 Q (cfs) = 26.89 Area (sqft) = 6.32 Velocity (ft/s) = 4.25 Wetted Perim (ft) = 8.58 Crit Depth, Yc (ft) = 1.49 Top Width (ft) = 7.95 EGL (ft) = 1.87 0 2 4 6 8 10 12 14 16 18 Elev (ft)Depth (ft)Section 553.50 -0.50 554.00 0.00 554.50 0.50 555.00 1.00 555.50 1.50 556.00 2.00 556.50 2.50 557.00 3.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: PERIMETER DITCH 4 Discharge 26.89 Peak Flow Period 0.08 Channel Slope 0.035 Channel Bottom Width 0 Left Side Slope 3 Right Side Slope 2 Low Flow Liner Retardance Class C Vegtation Type Mix (Sod & Bunch) Vegetation Density Fair 50-75% Soil Type Clay Loam SC250 - Class C - Mix (Sod & Bunch) - Fair 50-75% Phase Reach DischargeVelocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern SC250 Unvegetated Straight 26.89 cfs 7.26 ft/s 1.22 ft 0.026 3 lbs/ft2 2.66 lbs/ft2 1.13 STABLE E SC250 Reinforced Vegetation Straight 26.89 cfs 4.27 ft/s 1.59 ft 0.053 10 lbs/ft2 3.46 lbs/ft2 2.89 STABLE E Underlying Substrate Straight 26.89 cfs 4.27 ft/s 1.59 ft -- 0.8 lbs/ft2 0.178 lbs/ft2 4.48 STABLE -- Page 1 of 2 1/27/2016http://www.ecmds.com/print/analysis/77786/78390 Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:PERIMETER DITCH 5 Date:1/12/2016 PERIMETER DITCH 5 10.53 0.40 5.0 8.05 33.91 Rational Runoff Ditch Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Thursday, Jan 28 2016 PERIMETER DITCH 5 Triangular Side Slopes (z:1) = 3.00, 2.00 Total Depth (ft) = 2.50 Invert Elev (ft) = 638.00 Slope (%) = 4.76 N-Value = 0.052 Calculations Compute by: Known Q Known Q (cfs) = 33.91 Highlighted Depth (ft) = 1.63 Q (cfs) = 33.91 Area (sqft) = 6.64 Velocity (ft/s) = 5.11 Wetted Perim (ft) = 8.80 Crit Depth, Yc (ft) = 1.63 Top Width (ft) = 8.15 EGL (ft) = 2.04 0 2 4 6 8 10 12 14 16 18 Elev (ft)Depth (ft)Section 637.50 -0.50 638.00 0.00 638.50 0.50 639.00 1.00 639.50 1.50 640.00 2.00 640.50 2.50 641.00 3.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: PERIMETER DITCH 5 Discharge 33.91 Peak Flow Period 0.08 Channel Slope 0.0476 Channel Bottom Width 5 Left Side Slope 3 Right Side Slope 2 Low Flow Liner Retardance Class C Vegtation Type Mix (Sod & Bunch) Vegetation Density Fair 50-75% Soil Type Clay Loam SC250 - Class C - Mix (Sod & Bunch) - Fair 50-75% Phase Reach DischargeVelocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern SC250 Unvegetated Straight 33.91 cfs 6.44 ft/s 0.76 ft 0.035 3 lbs/ft2 2.27 lbs/ft2 1.32 STABLE E SC250 Reinforced Vegetation Straight 33.91 cfs 4.9 ft/s 0.94 ft 0.052 10 lbs/ft2 2.8 lbs/ft2 3.58 STABLE E Underlying Substrate Straight 33.91 cfs 4.9 ft/s 0.94 ft -- 0.8 lbs/ft2 0.417 lbs/ft2 1.92 STABLE -- Page 1 of 2 1/28/2016http://www.ecmds.com/print/analysis/77786/78388 Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:PERIMETER DITCH 5 Date:1/12/2016 PERIMETER DITCH 6 0.34 0.40 5.0 8.05 1.09 Rational Runoff Ditch Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Wednesday, Jan 20 2016 PERIMETER DITCH 6 Triangular Side Slopes (z:1) = 3.00, 2.00 Total Depth (ft) = 2.00 Invert Elev (ft) = 554.00 Slope (%) = 3.50 N-Value = 0.159 Calculations Compute by: Known Q Known Q (cfs) = 1.09 Highlighted Depth (ft) = 0.73 Q (cfs) = 1.090 Area (sqft) = 1.33 Velocity (ft/s) = 0.82 Wetted Perim (ft) = 3.94 Crit Depth, Yc (ft) = 0.42 Top Width (ft) = 3.65 EGL (ft) = 0.74 0 1 2 3 4 5 6 7 8 9 10 11 12 Elev (ft)Depth (ft)Section 553.50 -0.50 554.00 0.00 554.50 0.50 555.00 1.00 555.50 1.50 556.00 2.00 556.50 2.50 557.00 3.00 Reach (ft) Tensar International Corporation 5401 St. Wendel-Cynthiana Road Poseyville, Indiana 47633 Tel. 800.772.2040 Fax 812.867.0247 www.nagreen.com Erosion Control Materials Design Software Version 5.0 Project Name: PERMIT MOD Project Number: 77786 Project Location: HARRISBURG, NORTH CAROLINA Channel Name: PERIMETER DITCH 6 Discharge 1.09 Peak Flow Period 0.08 Channel Slope 0.035 Channel Bottom Width 0 Left Side Slope 3 Right Side Slope 2 Low Flow Liner Retardance Class C Vegtation Type Mix (Sod & Bunch) Vegetation Density Fair 50-75% Soil Type Clay Loam Unreinforced Vegetation - Class C - Mix (Sod & Bunch) - Fair 50-75% Phase Reach DischargeVelocity Normal Depth Mannings N Permissible Shear Stress Calculated Shear Stress Safety Factor Remarks Staple Pattern Unreinforced Vegetation Straight1.09 cfs 0.84 ft/s 0.72 ft 0.159 4.2 lbs/ft2 1.57 lbs/ft2 2.67 STABLE -- Underlying Substrate Straight1.09 cfs 0.84 ft/s 0.72 ft -- 0.05 lbs/ft2 0.006 lbs/ft2 8.26 STABLE -- Page 1 of 2 1/20/2016http://www.ecmds.com/print/analysis/77786/84439 STORMWATER PIPES Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:PIPE 1 Date:1/12/2016 PIPE 1 5.68 0.40 5.0 8.05 18.29 Rational Runoff Pipe Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Culvert Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Wednesday, Jan 27 2016 PIPE 1 Invert Elev Dn (ft) = 588.76 Pipe Length (ft) = 83.00 Slope (%) = 1.51 Invert Elev Up (ft) = 590.01 Rise (in) = 24.0 Shape = Circular Span (in) = 24.0 No. Barrels = 1 n-Value = 0.013 Culvert Type = Circular Concrete Culvert Entrance = Square edge w/headwall (C) Coeff. K,M,c,Y,k = 0.0098, 2, 0.0398, 0.67, 0.5 Embankment Top Elevation (ft) = 596.00 Top Width (ft) = 25.00 Crest Width (ft) = 10.00 Calculations Qmin (cfs) = 0.00 Qmax (cfs) = 18.29 Tailwater Elev (ft) = (dc+D)/2 Highlighted Qtotal (cfs) = 18.00 Qpipe (cfs) = 18.00 Qovertop (cfs) = 0.00 Veloc Dn (ft/s) = 6.14 Veloc Up (ft/s) = 6.99 HGL Dn (ft) = 590.52 HGL Up (ft) = 591.54 Hw Elev (ft) = 592.64 Hw/D (ft) = 1.32 Flow Regime = Inlet Control Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:PIPE 2 Date:1/12/2016 PIPE 2 1.50 0.40 5.0 8.05 4.83 Rational Runoff Pipe Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Culvert Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Monday, Jan 18 2016 PIPE 2 Invert Elev Dn (ft) = 552.00 Pipe Length (ft) = 42.00 Slope (%) = 9.52 Invert Elev Up (ft) = 556.00 Rise (in) = 18.0 Shape = Circular Span (in) = 18.0 No. Barrels = 1 n-Value = 0.013 Culvert Type = Circular Concrete Culvert Entrance = Square edge w/headwall (C) Coeff. K,M,c,Y,k = 0.0098, 2, 0.0398, 0.67, 0.5 Embankment Top Elevation (ft) = 558.00 Top Width (ft) = 28.50 Crest Width (ft) = 10.00 Calculations Qmin (cfs) = 0.00 Qmax (cfs) = 4.83 Tailwater Elev (ft) = (dc+D)/2 Highlighted Qtotal (cfs) = 4.65 Qpipe (cfs) = 4.65 Qovertop (cfs) = 0.00 Veloc Dn (ft/s) = 3.16 Veloc Up (ft/s) = 4.65 HGL Dn (ft) = 553.16 HGL Up (ft) = 556.83 Hw Elev (ft) = 557.16 Hw/D (ft) = 0.77 Flow Regime = Inlet Control Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:PIPE 3 Date:1/12/2016 PIPE 3 8.69 0.40 5.0 8.05 27.98 Rational Runoff PIPE Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Culvert Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Wednesday, Jan 27 2016 PIPE 3 Invert Elev Dn (ft) = 548.00 Pipe Length (ft) = 45.00 Slope (%) = 3.33 Invert Elev Up (ft) = 549.50 Rise (in) = 36.0 Shape = Circular Span (in) = 36.0 No. Barrels = 1 n-Value = 0.013 Culvert Type = Circular Concrete Culvert Entrance = Square edge w/headwall (C) Coeff. K,M,c,Y,k = 0.0098, 2, 0.0398, 0.67, 0.5 Embankment Top Elevation (ft) = 554.00 Top Width (ft) = 30.00 Crest Width (ft) = 10.00 Calculations Qmin (cfs) = 0.00 Qmax (cfs) = 27.98 Tailwater Elev (ft) = (dc+D)/2 Highlighted Qtotal (cfs) = 27.95 Qpipe (cfs) = 27.95 Qovertop (cfs) = 0.00 Veloc Dn (ft/s) = 4.70 Veloc Up (ft/s) = 6.72 HGL Dn (ft) = 550.35 HGL Up (ft) = 551.21 Hw Elev (ft) = 552.01 Hw/D (ft) = 0.84 Flow Regime = Inlet Control Civil & Environmental Consultants, Inc. By:CTH Project Name:HIGHWAY 49 Date:1/12/2016 CEC Project No.:111-370.002 Checked By:NTB Description:PIPE 4 Date:1/12/2016 PIPE 4 10.53 0.40 5.0 8.05 33.91 Rational Runoff Ditch Composite C Area (acres) Flow, Q (cfs) Intensity, I (in/hr) Time of Concentration, Tc (min) Culvert Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Thursday, Jan 28 2016 PIPE 4 Invert Elev Dn (ft) = 548.00 Pipe Length (ft) = 85.00 Slope (%) = 12.94 Invert Elev Up (ft) = 559.00 Rise (in) = 36.0 Shape = Circular Span (in) = 36.0 No. Barrels = 1 n-Value = 0.013 Culvert Type = Circular Concrete Culvert Entrance = Square edge w/headwall (C) Coeff. K,M,c,Y,k = 0.0098, 2, 0.0398, 0.67, 0.5 Embankment Top Elevation (ft) = 564.00 Top Width (ft) = 30.00 Crest Width (ft) = 10.00 Calculations Qmin (cfs) = 0.00 Qmax (cfs) = 33.91 Tailwater Elev (ft) = (dc+D)/2 Highlighted Qtotal (cfs) = 30.10 Qpipe (cfs) = 30.10 Qovertop (cfs) = 0.00 Veloc Dn (ft/s) = 4.99 Veloc Up (ft/s) = 6.91 HGL Dn (ft) = 550.39 HGL Up (ft) = 560.78 Hw Elev (ft) = 561.50 Hw/D (ft) = 0.83 Flow Regime = Inlet Control NOAA Atlas 14, Volume 2, Version 3 Location name: Harrisburg, North Carolina, US* Latitude: 35.3262°, Longitude: -80.6451° Elevation: 590 ft* * source: Google Maps POINT PRECIPITATION FREQUENCY ESTIMATES G.M. Bonnin, D. Martin, B. Lin, T. Parzybok, M.Yekta, and D. Riley NOAA, National Weather Service, Silver Spring, Maryland PF_tabular | PF_graphical | Maps_&_aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches/hour)1 Duration Average recurrence interval (years) 1 2 5 10 25 50 100 200 500 1000 5-min 4.81 (4.44-5.22) 5.69 (5.24-6.19) 6.62 (6.10-7.20) 7.30 (6.70-7.91) 8.05 (7.36-8.71) 8.57 (7.79-9.28) 9.04 (8.18-9.78) 9.46 (8.51-10.2) 9.91 (8.83-10.8) 10.2 (9.04-11.1) 10-min 3.85 (3.55-4.17) 4.55 (4.20-4.95) 5.30 (4.88-5.76) 5.83 (5.35-6.32) 6.41 (5.86-6.94) 6.82 (6.20-7.39) 7.18 (6.50-7.77) 7.49 (6.74-8.12) 7.84 (6.98-8.51) 8.06 (7.12-8.77) 15-min 3.20 (2.96-3.48) 3.81 (3.52-4.15) 4.48 (4.12-4.86) 4.92 (4.52-5.33) 5.42 (4.96-5.87) 5.76 (5.24-6.23) 6.05 (5.48-6.55) 6.30 (5.67-6.83) 6.58 (5.86-7.14) 6.74 (5.96-7.34) 30-min 2.20 (2.03-2.38) 2.63 (2.43-2.86) 3.18 (2.93-3.45) 3.56 (3.27-3.86) 4.01 (3.67-4.35) 4.34 (3.94-4.69) 4.63 (4.19-5.02) 4.91 (4.41-5.31) 5.23 (4.66-5.68) 5.46 (4.82-5.94) 60-min 1.37 (1.26-1.49) 1.65 (1.52-1.80) 2.04 (1.88-2.21) 2.32 (2.13-2.51) 2.67 (2.44-2.89) 2.94 (2.67-3.18) 3.19 (2.89-3.45) 3.44 (3.09-3.73) 3.75 (3.34-4.08) 3.98 (3.52-4.34) 2-hr 0.794 (0.729-0.867) 0.962 (0.882-1.05) 1.19 (1.09-1.30) 1.37 (1.25-1.49) 1.59 (1.45-1.74) 1.77 (1.60-1.92) 1.94 (1.74-2.11) 2.10 (1.87-2.29) 2.32 (2.05-2.54) 2.49 (2.17-2.72) 3-hr 0.566 (0.519-0.620) 0.683 (0.627-0.749) 0.853 (0.781-0.935) 0.984 (0.897-1.07) 1.16 (1.05-1.26) 1.30 (1.17-1.41) 1.44 (1.29-1.56) 1.58 (1.40-1.72) 1.77 (1.55-1.93) 1.92 (1.66-2.10) 6-hr 0.343 (0.315-0.375) 0.414 (0.380-0.453) 0.517 (0.474-0.565) 0.597 (0.546-0.652) 0.706 (0.641-0.768) 0.792 (0.715-0.861) 0.880 (0.787-0.957) 0.969 (0.859-1.06) 1.09 (0.956-1.19) 1.19 (1.03-1.30) 12-hr 0.202 (0.186-0.221) 0.244 (0.225-0.267) 0.306 (0.281-0.334) 0.356 (0.325-0.388) 0.423 (0.384-0.460) 0.477 (0.430-0.518) 0.533 (0.476-0.578) 0.592 (0.522-0.641) 0.673 (0.585-0.728) 0.738 (0.632-0.799) 24-hr 0.120 (0.111-0.129) 0.144 (0.135-0.156) 0.181 (0.169-0.196) 0.210 (0.195-0.227) 0.250 (0.231-0.269) 0.281 (0.260-0.303) 0.313 (0.289-0.337) 0.347 (0.318-0.373) 0.392 (0.358-0.423) 0.428 (0.390-0.462) 2-day 0.070 (0.065-0.075) 0.085 (0.079-0.091) 0.105 (0.098-0.113) 0.122 (0.113-0.131) 0.144 (0.133-0.155) 0.162 (0.149-0.174) 0.180 (0.166-0.193) 0.199 (0.182-0.213) 0.224 (0.205-0.241) 0.244 (0.222-0.263) 3-day 0.050 (0.046-0.053) 0.060 (0.056-0.064) 0.074 (0.069-0.079) 0.085 (0.079-0.091) 0.101 (0.093-0.108) 0.113 (0.104-0.121) 0.125 (0.116-0.135) 0.138 (0.127-0.148) 0.156 (0.143-0.168) 0.170 (0.155-0.183) 4-day 0.039 (0.037-0.042) 0.047 (0.044-0.051) 0.058 (0.054-0.062) 0.067 (0.062-0.072) 0.079 (0.073-0.085) 0.089 (0.082-0.095) 0.098 (0.091-0.105) 0.108 (0.100-0.116) 0.122 (0.112-0.131) 0.133 (0.121-0.143) 7-day 0.026 (0.024-0.028) 0.031 (0.029-0.033) 0.038 (0.035-0.040) 0.043 (0.040-0.046) 0.050 (0.047-0.054) 0.056 (0.052-0.060) 0.062 (0.058-0.066) 0.069 (0.063-0.073) 0.077 (0.071-0.082) 0.084 (0.077-0.090) 10-day 0.021 (0.020-0.022) 0.025 (0.023-0.026) 0.030 (0.028-0.032) 0.034 (0.032-0.036) 0.039 (0.036-0.041) 0.043 (0.040-0.046) 0.047 (0.044-0.050) 0.052 (0.048-0.055) 0.057 (0.053-0.061) 0.062 (0.057-0.066) 20-day 0.014 (0.013-0.015) 0.016 (0.016-0.017) 0.019 (0.018-0.020) 0.022 (0.021-0.023) 0.025 (0.024-0.026) 0.027 (0.026-0.029) 0.030 (0.028-0.032) 0.032 (0.030-0.034) 0.036 (0.033-0.038) 0.039 (0.036-0.041) 30-day 0.011 (0.011-0.012) 0.013 (0.013-0.014) 0.016 (0.015-0.016) 0.017 (0.016-0.018) 0.020 (0.018-0.021) 0.021 (0.020-0.022) 0.023 (0.022-0.024) 0.025 (0.023-0.026) 0.027 (0.025-0.028) 0.029 (0.027-0.030) 45-day 0.010 (0.009-0.010) 0.011 (0.011-0.012) 0.013 (0.012-0.013) 0.014 (0.013-0.015) 0.016 (0.015-0.016) 0.017 (0.016-0.018) 0.018 (0.017-0.019) 0.019 (0.018-0.020) 0.021 (0.020-0.022) 0.022 (0.021-0.023) 60-day 0.009 (0.008-0.009) 0.010 (0.010-0.010) 0.011 (0.011-0.012) 0.012 (0.012-0.013) 0.014 (0.013-0.014) 0.015 (0.014-0.015) 0.016 (0.015-0.016) 0.016 (0.016-0.017) 0.018 (0.017-0.018) 0.019 (0.018-0.019) 1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Back to Top PF graphical Page 1 of 4Precipitation Frequency Data Server 10/21/2015http://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=35.3262&lon=-80.6451&dat... Back to Top Maps & aerials Small scale terrain Map data ©2015 GoogleReport a map error50 km Page 2 of 4Precipitation Frequency Data Server 10/21/2015http://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=35.3262&lon=-80.6451&dat... Large scale map Large scale aerial Back to Top US Department of Commerce National Oceanic and Atmospheric Administration National Weather Service Office of Hydrologic Development 1325 East West Highway Silver Spring, MD 20910 Map data ©2015 GoogleReport a map error2 km Map data ©2015 GoogleReport a map error2 km Imagery ©2015 TerraMetricsReport a map error2 km Page 3 of 4Precipitation Frequency Data Server 10/21/2015http://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=35.3262&lon=-80.6451&dat... APPENDIX D COST ESTIMATE APPENDIX E PROPOSED MONITORING PLAN -i- Water Quality Monitoring Plan Updated August 2017 TABLE OF CONTENTS 1.0 PURPOSE ........................................................................................................................... I 2.0 INTRODUCTION..............................................................................................................2 2.1 Background ............................................................................................................. 2 2.1.1 Phase I/II C&D Landfill Area ......................................................................2 2.1.2 Phase I Expansion C&D Landfill Area ........................................................3 2.2 Site Geology/Hydrogeology ................................................................................... 3 3.0 GROUNDWATER MONITORING PLAN ....................................................................4 3.1 Detection Monitoring Well Network ...................................................................... 4 3.1.1 Active Phase I/II C&D Landfill ...................................................................4 3.1.2 Phase I Expansion C&D Landfill ................................................................4 3.2 Assessment Monitoring Well Network ................................................................... 5 3.3 Groundwater Monitoring Procedures ..................................................................... 5 3.3.1 Well Water Level Gauging ..........................................................................5 3.3.2 Well Purging ................................................................................................6 3.3.3 Groundwater Sample Collection ..................................................................6 3.4 Groundwater Monitoring Analytical Procedures .................................................... 8 3.4.1 Detection Monitoring ...................................................................................8 3.4.2 Assessment Monitoring ...............................................................................8 3.4.3 Quality Assurance Analyses and Data Validation .......................................9 4.0 SURFACE WATER MONITORING PLAN ................................................................10 5.0 WATER QUALITY MONITORING REPORTING ...................................................12 FIGURES Figure 1 - Site Location Map Figure 2 - Detailed Site Map ATTACHMENTS Attachment A - Seasonal High Water Table Groundwater Potentiometric Map (from Enviro-Pro, P.C.) Attachment B - Water Quality Monitoring Location Map Attachment C - NCDEQ Solid Waste Section Guidelines for Groundwater, Soil, and Surface Water Sampling Attachment D - NCDEQ Solid Waste Section Monitoring Report Memos and Forms -1- Water Quality Monitoring Plan Updated August 2017 1.0 PURPOSE The Water Quality Monitoring Plan (Plan) for the Greenway Waste Solutions of Harrisburg, LLC landfill facility (formerly Highway 49 C&D Landfill) has been updated to include assessment monitoring requirements and activities that have been implemented and are on-going since August 2013 at the landfill facility. This Plan updates the previous Water Quality Monitoring Plan prepared by EnviroPro, P.C. as revised January 2010. The purpose of this Plan is to identify the current monitoring network, methods, and procedures to be used to effectively monitor groundwater and surface water quality in the uppermost aquifer present at the subject site that is representative of 1) background groundwater quality, and 2) groundwater quality passing the relevant point of compliance at appropriate locations downgradient of proposed landfilling operations. This Plan includes sections describing: 1) groundwater detection monitoring; 2) groundwater assessment monitoring; 3) well gauging, purging, and sampling procedures; 4) surface water monitoring, 5) analytical methods; and 6) data evaluation and reporting requirements set forth by the North Carolina Department of Environmental Quality (NCDEQ) – Solid Waste Section (SWS). The requirements for water quality monitoring of C&D landfill facilities are codified in the Solid Waste Rules 15A NCAC 13B .0500. -2- Water Quality Monitoring Plan Updated August 2017 2.0 INTRODUCTION The subject landfill facility is operated by Greenway Waste Solutions of Harrisburg, LLC (GWS) under Solid Waste Facility Permit Number 13-06. The facility address is 2105 Speedrail Court, Harrisburg, North Carolina. A Site Location Map is attached as Figure 1. An active Phase I/II C&D disposal area is located in the northwest portion of the site. It is bounded by Coddle Creek to the north; an adjacent permitted Phase I Expansion C&D landfill area to the east; private industrial and residential properties to the south; and Speedrail Court to the west. Waste placement in the active disposal area has generally occurred from 2000 to present. To date, waste has not been placed in the Phase I Expansion C&D landfill area. A Site Map is attached as Figure 2. 2.1 Background 2.1.1 Phase I/II C&D Landfill Area The Phase I/II C&D landfill was permitted to operate in 2000. As a part of the original landfill permit, semi-annual groundwater detection monitoring was initially performed for a well network consisting one background well (MW-21) and three downgradient monitoring wells (MW-55, MW-56 and MW-57) with semi-annual reports submitted to the SWS. The approximate landfill monitoring well locations are depicted in Figure 2. During the Spring 2013 semi-annual groundwater monitoring event, benzene and vinyl chloride were detected in groundwater samples collected from monitoring wells MW-56 and MW-57 at the active Phase I/II Area. At the request of the SWS, an Assessment Monitoring Work Plan dated August 5, 2013 was prepared by Enviro-Pro, P.C. to assess the groundwater impacts. Additional assessment monitoring wells (MW-56A, MW-56D, and MW-57D) were installed hydraulically downgradient of the landfill (see Figure 2). These new wells and the existing detection monitoring wells were sampled on October 21, 2013 as part of this initial groundwater assessment, and the presence of vinyl chloride was confirmed in the saprolite and upper bedrock aquifer horizons downgradient of the landfill. As required by the Solid Waste Rules, groundwater assessment monitoring wells and installed after 2013 have been routinely monitored and sampled along with -3- Water Quality Monitoring Plan Updated August 2017 the originally detection monitoring wells for the constituents listed in Appendix II of CFR Part 258. In addition, the SWS requested a characterization of the nature and extent of the groundwater contamination at the active Phase I/II Landfill. 2.1.2 Phase I Expansion C&D Landfill Area Although permitted to operate, waste has not been placed in the Phase I Expansion C&D landfill area to date. The detection or POC well network for the Phase I Expansion consists of background well MW-104 and downgradient wells MW-81, MW-95, MW-99, MW-102, and MW-103. Approximate well locations are depicted on Figure 2. Enviro-Pro, P.C has collected background groundwater sample analytical data from the Phase I Expansion area since at least October 2013. 2.2 Site Geology/Hydrogeology The hydrogeologic unit underlying the site is a composite regolith-fractured crystalline rock (predominantly granodiorite and/or granite composition) aquifer system that is typical of the NC Piedmont. Locally, the regolith is characterized by residual sandy silt soils from the surface to approximately 10 feet below grade, and then silty sand saprolite and partially weathered rock (PWR) to depths of 25 to 40 feet below grade. Unweathered fractured bedrock generally occurs at depths ranging from 25 to 40 below grade. The regolith aquifer zone is interconnected by fractures with the underlying crystalline rock aquifer zone. A seasonal high water table potentiometric map prepared by Enviro-Pro, P.C. is presented in Figure 1 in Atachment A. The local water table is unconfined and is encountered in the bedrock in the more elevated site areas and in the regolith in lower site areas. Groundwater recharge occurs in the upland areas and then flows in the direction of Coddle Creek to the north. Groundwater recharge and discharge at the landfill site is anticipated to follow the local slope aquifer system as described by LeGrand (2004). The general direction of groundwater flow can be approximated from the surface topography. The topography at the site generally slopes toward Coddle Creek to the north. Coddle Creek functions as a groundwater discharge divide between the site and the properties on the north side of the stream. -4- Water Quality Monitoring Plan Updated August 2017 3.0 GROUNDWATER MONITORING PLAN 3.1 DETECTION MONITORING WELL NETWORK 3.1.1 Active Phase I/II C&D Landfill The groundwater detection monitoring well network consists of background well MW-21 and downgradient wells MW-55, MW-56, and MW-57. These are point-of-compliance (POC) wells as defined by North Carolina Solid Waste Rules 15A NCAC 13B .0544. Approximate well locations are depicted on Figure 2. Prior to the required shift to assessment monitoring, these detection wells were monitored for the constituents listed in Appendix I of 40 CFR Part 258, and for mercury, chloride, manganese, iron, sulfate, alkalinity, total dissolved solids, specific conductance, pH, and temperature as specified in 15A NCAC 13B .0544(b)(1)(D). Due to the present assessment monitoring requirement, the detection wells and the recently added assessment wells are currently monitored for the additional constituents listed in Appendix II of 40 CFR Part 258. NCDEQ-SWS may give approval to return to detection monitoring when: 1) the subject analytes are shown to be at or below background values and 15A NCAC 2L .0202 for two consecutive sampling events; 2) the plume is not migrating horizontally or vertically: and 3) the plume has not exceeded the compliance boundary, as specified in 15A NCAC 13B .0545(b)(9) (A), (B), and (C). 3.1.2 Phase I Expansion C&D Landfill To date, waste has not been placed in the Phase I Expansion C&D Landfill. The detection well network for the Phase I Expansion Area consists of background well MW-104 and downgradient wells MW-81, MW-95, MW-99, MW-102, and MW-103. Approximate well locations are depicted on Figure 2. These compliance wells were selected to allow characterization of down- gradient and cross-gradient groundwater quality and detection of changes in quality in the area of the landfill during the proposed Expansion Area Phase I operation. Background groundwater sample analytical data has been collected by Enviro-Pro, P.C. since at least October 2013. -5- Water Quality Monitoring Plan Updated August 2017 Beginning with the semi-annual water quality monitoring event preceding the initial placement of waste in the Phase I Expansion landfill, the site detection wells will be monitored for the constituents listed in Appendix I of 40 CFR Part 258, mercury, chloride, manganese, iron, sulfate, alkalinity, total dissolved solids, specific conductance, pH, and temperature as specified in 15A NCAC 13B .0544(b)(1)(D). 3.2 ASSESSMENT MONITORING WELL NETWORK Three assessment monitoring wells (MW-56A, MW-56D, and MW-57D) have been added in the Active Phase I/II area to characterize and delineate horizontal and vertical contaminant migration. Approximate well locations are depicted on Figure 2. Wells 56A/56D and MW-57/57D form well clusters to provide vertical sampling and hydraulic gradient data. These assessment wells, along with original detection monitoring wells MW-55, MW-56, and MW-57, will be sampled semi- annually for constituents listed in Appendix II of 40 CFR Part 258, mercury, chloride, manganese, sulfate, iron, specific conductance, pH, temperature, alkalinity, and total dissolved solids until the facility meets the conditions listed in Subsection 3.1.1 to return to detection monitoring for which only POC wells are sampled. 3.3 GROUNDWATER MONITORING PROCEDURES 3.3.1 Well Water Level Gauging Each time groundwater is sampled at the facility well water levels will be gauged prior to well purging and sample collection. Gauging of the well network at the facility will be performed within a 24-hour period of time to avoid temporal variations in groundwater flow. Well gauging will be performed in general accordance with the Solid Waste Section Guidelines for Groundwater, Soil, and Surface Water Sampling (Revised April 2008) ("SWS Sampling Guidelines″) included as Attachment B. -6- Water Quality Monitoring Plan Updated August 2017 3.3.2 Well Purging Well purging will be performed in general accordance with the attached SWS Sampling Guidelines (see Attachment C). Prior to sample collection, each well to be sampled will be purged using either a low-flow peristaltic pump, low-flow submersible, or a dedicated Teflon™ bailer until field parameters stabilize or of three well volumes. Field parameters (i.e., pH, temperature, specific conductance, dissolved oxygen, oxidation-reduction potential, and turbidity) will be measured and recorded at the initiation of purging and upon the removal of each well volume, and these field- measured data will be incorporated into the Water Quality Monitoring Report. Wells will be adequately purged prior to sample collection to ensure representative aquifer formation water rather than stagnant water is sampled. An adequate well purge may be achieved by purging three well volumes or by satisfying any one of the three purge criteria specified in the attached SWS Sampling Guidelines (see Attachment C). To calculate well volumes for a two-inch diameter monitoring well, the volume of water present will be determined using the following equation: Well Volume (Gallons) = 0.16h where h is the height of the water column in the well. Wells that demonstrate sufficient recharge will be purged as outlined above; however, some wells may be bailed dry. In this case, the well will be allowed to recharge a minimum of 60 percent of its static water level prior to collecting the sample. 3.3.3 Groundwater Sample Collection Groundwater samples will be collected from each detection and assessment monitoring well comprising the landfill monitoring well network during each semi-annual monitoring event in general accordance with the attached SWS Sampling Guidelines (see Attachment A). Samples will be collected as soon as practical and within 24 hours of the completion of well purging. Groundwater samples will be collected in laboratory-supplied sample containers that will be properly labeled, placed on ice in an insulated cooler, and either hand-delivered, picked up by -7- Water Quality Monitoring Plan Updated August 2017 laboratory courier, or shipped overnight by express courier service to a North Carolina-certified laboratory. Proper chain-of-custody documentation will be maintained from field sample collection through laboratory analysis. After sample collection, the expansion cap for each monitoring will be inserted into the riser and the steel protective casing will be secured with a lock. -8- Water Quality Monitoring Plan Updated August 2017 3.4 GROUNDWATER MONITORING ANALYTICAL PROCEDURES 3.4.1 Detection Monitoring The detection monitoring program will include monitoring for the constituents listed in Appendix I of 40 CFR Part 258, mercury, chloride, manganese, sulfate, iron, specific conductance, pH, temperature, alkalinity, and total dissolved solids. The following parameter analytical methods will be followed in analyzing the groundwater samples: Appendix I VOCs EPA Method 8260 or equivalent method Appendix I Metals EPA Method 6010 or equivalent method Mercury EPA Method 7470/7471 or equivalent method Chloride Standard Method 4500 Cl E or equivalent method Sulfate EPA Method 300.0 or equivalent method Alkalinity Standard Method 2320B or equivalent method Total Dissolved Solids Standard Method 2540C or equivalent method Specific conductance, pH, temperature, dissolved oxygen, oxidation-reduction potential, and turbidity will be measured with appropriate and properly calibrated water quality field instruments. 3.4.2 Assessment Monitoring The assessment monitoring program will include monitoring for the constituents listed in Appendix II of 40 CFR Part 258, mercury, chloride, manganese, sulfate, iron, specific conductance, pH, temperature, alkalinity, and total dissolved solids. The following parameter analytical methods will be followed in analyzing the groundwater samples: Appendix II VOCs EPA Method 8260 or equivalent method Appendix II SVOCs EPA Method 8270 or equivalent method Appendix II OC Pesticides EPA Method 8081B or equivalent method Appendix II PCBs EPA Method 8082A or equivalent method -9- Water Quality Monitoring Plan Updated August 2017 Appendix II Herbicides EPA Method 8151A or equivalent method Cyanide EPA Method 9014 or equivalent method Appendix II Metals EPA Method 6010, 200.8, or equivalent method Mercury EPA Method 7470/7471, 245.1, or equivalent method Chloride Standard Method 4500 Cl E, 9056A or equivalent method Sulfate EPA Method 300.0, 9056A, or equivalent method Alkalinity Standard Method 2320B or equivalent method Total Dissolved Solids Standard Method 2540C or equivalent method Specific conductance, pH, temperature, dissolved oxygen, oxidation-reduction potential, and turbidity will be measured with appropriate and properly calibrated water quality field instruments. 3.4.3 Quality Assurance Analyses and Data Validation A trip blank will be analyzed for Appendix I VOCs. Up to two blind duplicate samples will be collected for Appendix I VOC analysis. Up to six well samples will be collected as split samples for which the splits will be submitted to two independent North Carolina-certified analytical laboratories for Appendix 1 VOC analytical testing. Laboratory data will be subjected to Level II laboratory data validation protocols. -10- Water Quality Monitoring Plan Updated August 2017 4.0 SURFACE WATER MONITORING PLAN The two surface water monitoring stations previously established along Coddle Creek at the approximate locations indicated on Figure 2 will be sampled in order to evaluate potential impact to surface water quality from surface runoff or groundwater discharge from the existing area of landfilling. The upstream location (SW-1) is situated near the northwestern property line, while station SW-2 is located below the Phase II downgradient property line. These sampling points will bracket the area of Coddle Creek that could potentially be impacted by currently active landfilling operations. Once waste is introduced to the Phase I Expansion Area Landfill, one additional surface water monitoring station (SW-3) will be located at the approximate location indicated on Figure 2 at a point downstream of the expansion landfill. The actual sampling points within Coddle Creek will be located in areas of minimum turbulence and aeration. Surface water samples will be collected in general accordance with the attached SWS Sampling Guidelines (see Attachment C). Sampling Directly Into Sample Container If possible, the sample will be collected directly into the laboratory-supplied sample container. This method will be used when practical for collecting grab samples for immediate in-situ field analyses and when the laboratory-supplied sample containers do not contain preservatives. Sample containers containing premeasured amounts of preservatives will not be used to collect grab samples. Sampling with an Intermediate Vessel or Container: When a sample cannot be collected directly into the laboratory-supplied sample container, an unpreserved sample container or an intermediate vessel (e.g., beakers, buckets or dippers) will be used to obtain the sample. The intermediate vessel will be rinsed with ample amounts of site water prior to collecting the first sample. -11- Water Quality Monitoring Plan Updated August 2017 Double Check-Valve Bailer for Deeper Surface Water Samples Deeper water samples can be collected using a double check-valve bailer if the data requirements do not necessitate a sample from a strictly discrete interval of the water column. Rinse the sampling device with ample amounts of site water prior to collecting the first sample. Bailers with an upper and lower check-valve can be lowered through the water column. Water will continually be displaced through the bailer until the desired depth is reached, at which point the bailer is retrieved. Sample containers will be properly labeled, placed on ice in a portable cooler, and either hand- delivered, picked up by laboratory courier, or shipped overnight by express courier service to a North Carolina-certified laboratory for subsequent analytical testing. Surface water samples will be analyzed for the constituents listed in Appendix I of 40 CFR Part 258, mercury, specific conductance, pH, temperature, and turbidity. The analytical methods listed in Subsection 3.4.1 will be followed in analyzing the surface water samples. -12- Water Quality Monitoring Plan Updated August 2017 5.0 WATER QUALITY MONITORING REPORTING In accordance with 15A NCAC 13B .0545(b)(1)(H), a monitoring report will be submitted to the SWS within 120 days of completing a semi-annual water quality sampling event. One copy will be in electronic format, that will include the following information: 1) field observations relating to the conditions of the monitoring wells; 2) field data; 3) summary of the laboratory data; 4) field sampling quality assurance and quality control data; 5) information on ground-water flow direction and flow rates; and 6) any other pertinent information related to the sampling event. Water quality monitoring reporting will comply with SWS guidance provided on the NCDEQ SWS website http://deq.nc.gov/about/divisions/waste-management/waste-management-permit- guidance/solid-waste-section/environmental-monitoring. The following links are provided on the website: 1) Solid Waste Environmental Monitoring Data Form 2) Electronic Data Deliverable (EDD) Template 3) October 2007 Memo 4) October 2006 Memo 5) Addendum to the October 2006 Memo A hardcopy of each of the above documents is provided in Attachment B. FIGURES REFERENCE DATE:DWG SCALE: DRAWN BY:CHECKED BY:APPROVED BY: PROJECT NO: FIGURE NO.: SITE LOCATION MAP 111-370.0021"=1000'AUGUST 2017 PNP EHS EHS 1 HIGHWAY 49 C&D LANDFILL GREENWAY WASTE SOLUTIONS OF HARRISBURG, LLC www.cecinc.com 1900 Center Park Drive - Suite A - Charlotte, NC 28217 Ph: 980.237.0373 · Fax: 980.237.0372 NORTH 8 A B 34567 12 C D E F G H 8 34567 12 A B C D E F G H DESCRIPTIONDATENOREVISION RECORDwww.cecinc.com2030 S. Tyron Street - Suite 3E - Charlotte, NC 28203Ph: 980.224.8104DATE:DWG SCALE:DRAWN BY:CHECKED BY:APPROVED BY:PROJECT NO:SHEET OF FIGURE NO.:DETAILED SITE MAP111-370.0021"=150'AUGUST 2017JKS/TMGSLBSLB1 1 2GREENWAY WASTE SOLUTIONS OF HIGHWAY 49, LLCCABARRUS COUNTY, NCNORTH ATTACHMENT A SEASONAL HIGH WATER TABLE POTENTIOMETRIC MAP DATE:DWG SCALE: DRAWN BY:CHECKED BY:APPROVED BY: PROJECT NO: ATTACHMENT: SEASONAL HIGH WATER TABLE POTENTIOMETRIC MAP 111-370.0021"=300'8/10/17 PAB EHS EHS A GREENWAY WASTE SOLUTIONS OF HARRISBURG, LLC HARRISBURG, NORTH CAROLINA www.cecinc.com 1900 Center Park Drive - Suite A - Charlotte, NC 28217 Ph: 980.237.0373 · Fax: 980.237.0372 NORTH REFERENCE ATTACHMENT B WATER QUALITY MONITORING LOCATION MAP DATE:DWG SCALE: DRAWN BY:CHECKED BY:APPROVED BY: PROJECT NO: ATTACHMENT: WATER QUALITY MONITORING LOCATION MAP 111-370.0021"=300'8/15/17 JKS EHS EHS B GREENWAY WASTE SOLUTIONS OF HARRISBURG, LLC HARRISBURG, NORTH CAROLINA www.cecinc.com 1900 Center Park Drive - Suite A - Charlotte, NC 28217 Ph: 980.237.0373 · Fax: 980.237.0372 NORTH REFERENCE LEGENDLEGEND ATTACHMENT C NCDEQ SOLID WASTE SECTION GUIDELINES FOR GROUNDWATER, SOIL, AND SURFACE WATER SAMPLING Solid Waste Section Guidelines for Groundwater, Soil, and Surface Water Sampling STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT SOLID WASTE SECTION General Sampling Procedures The following guidance is provided to insure a consistent sampling approach so that sample collection activities at solid waste management facilities provide reliable data. Sampling must begin with an evaluation of facility information, historical environmental data and site geologic and hydrogeologic conditions. General sampling procedures are described in this document. Planning Begin sampling activities with planning and coordination. The party contracting with the laboratory is responsible for effectively communicating reporting requirements and evaluating data reliability as it relates to specific monitoring activities. Sample Collection Contamination Prevention a.) Take special effort to prevent cross contamination or environmental contamination when collecting samples. 1. If possible, collect samples from the least contaminated sampling location (or background sampling location, if applicable) to the most contaminated sampling location. 2. Collect the ambient or background samples first, and store them in separate ice chests or separate shipping containers within the same ice chest (e.g. untreated plastic bags). 3. Collect samples in flowing water at designated locations from upstream to downstream. b.) Do not store or ship highly contaminated samples (concentrated wastes, free product, etc.) or samples suspect of containing high concentrations of contaminants in the same ice chest or shipping containers with other environmental samples. 1. Isolate these sample containers by sealing them in separate, untreated plastic bags immediately after collecting, preserving, labeling, etc. 2. Use a clean, untreated plastic bag to line the ice chest or shipping container. c.) All sampling equipment should be thoroughly decontaminated and transported in a manner that does not allow it to become contaminated. Arrangements should be made ahead of time to decontaminate any sampling or measuring equipment that will be reused when taking samples from more than one well. Field decontamination of Rev 4-08 1 sampling equipment will be necessary before sampling each well to minimize the risk of cross contamination. Decontamination procedures should be included in reports as necessary. Certified pre-cleaned sampling equipment and containers may be used. When collecting aqueous samples, rinse the sample collection equipment with a portion of the sample water before taking the actual sample. Sample containers do not need to be rinsed. In the case of petroleum hydrocarbons, oil and grease, or containers with pre-measured preservatives, the sample containers cannot be rinsed. d.) Place all fuel-powered equipment away from, and downwind of, any site activities (e.g., purging, sampling, decontamination). 1. If field conditions preclude such placement (i.e., the wind is from the upstream direction in a boat), place the fuel source(s) as far away as possible from the sampling activities and describe the conditions in the field notes. 2. Handle fuel (i.e., filling vehicles and equipment) prior to the sampling day. If such activities must be performed during sampling, the personnel must wear disposable gloves. 3. Dispense all fuels downwind. Dispose of gloves well away from the sampling activities. Filling Out Sample Labels Fill out label, adhere to vial and collect sample. Print legibly with indelible ink. At a minimum, the label or tag should identify the sample with the following information: 1. Sample location and/or well number 2. Sample identification number 3. Date and time of collection 4. Analysis required/requested 5. Sampler’s initials 6. Preservative(s) used, if any [i.e., HCl, Na2S2O3, NO3, ice, etc.] 7. Any other pertinent information for sample identification Sample Collection Order Unless field conditions justify other sampling regimens, collect samples in the following order: 1. Volatile Organics and Volatile Inorganics 2. Extractable Organics, Petroleum Hydrocarbons, Aggregate Organics and Oil and Grease 3. Total Metals 4. Inorganic Nonmetallics, Physical and Aggregate Properties, and Biologicals 5. Microbiological NOTE: If the pump used to collect groundwater samples cannot be used to collect volatile or extractable organics then collect all other parameters and withdraw the pump and tubing. Then collect the volatile and extractable organics. Rev 4-08 2 Health and Safety Implement all local, state, and federal requirements relating to health and safety. Follow all local, state and federal requirements pertaining to the storage and disposal of any hazardous or investigation derived wastes. a.) The Solid Waste Section recommends wearing protective gloves when conducting all sampling activities. 1. Gloves serve to protect the sample collector from potential exposure to sample constituents, minimize accidental contamination of samples by the collector, and preserve accurate tare weights on preweighed sample containers. 2. Do not let gloves come into contact with the sample or with the interior or lip of the sample container. Use clean, new, unpowdered and disposable gloves. Various types of gloves may be used as long as the construction materials do not contaminate the sample or if internal safety protocols require greater protection. 3. Note that certain materials that may potentially be present in concentrated effluent can pass through certain glove types and be absorbed in the skin. Many vendor catalogs provide information about the permeability of different gloves and the circumstances under which the glove material might be applicable. The powder in powdered gloves can contribute significant contamination. Powdered gloves are not recommended unless it can be demonstrated that the powder does not interfere with the sample analysis. 4. Change gloves after preliminary activities, after collecting all the samples at a single sampling point, if torn or used to handle extremely dirty or highly contaminated surfaces. Properly dispose of all used gloves as investigation derived wastes. b.) Properly manage all investigation derived waste (IDW). 5. To prevent contamination into previously uncontaminated areas, properly manage all IDW. This includes all water, soil, drilling mud, decontamination wastes, discarded personal protective equipment (PPE), etc. from site investigations, exploratory borings, piezometer and monitoring well installation, refurbishment, abandonment, and other investigative activities. Manage all IDW that is determined to be RCRA-regulated hazardous waste according to the local, state and federal requirements. 6. Properly dispose of IDW that is not a RCRA-regulated hazardous waste but is contaminated above the Department’s Soil Cleanup Target Levels or the state standards and/or minimum criteria for ground water quality. If the drill cuttings/mud orpurged well water is contaminated with hazardous waste, contact the DWM Hazardous Waste Section (919-508-8400) for disposal options. Maintain all containers holding IDW in good condition. Periodically inspect the containers for damage and ensure that all required labeling (DOT, RCRA, etc.) are clearly visible. Rev 4-08 3 Sample Storage and Transport Store samples for transport carefully. Pack samples to prevent from breaking and to maintain a temperature of approximately 4 degrees Celsius (°C), adding ice if necessary. Transport samples to a North Carolina-certified laboratory as soon as possible. Avoid unnecessary handling of sample containers. Avoid heating (room temperature or above, including exposure to sunlight) or freezing of the sample containers. Reduce the time between sample collection and delivery to a laboratory whenever possible and be sure that the analytical holding times of your samples can be met by the laboratory. a.) A complete chain-of-custody (COC) form must be maintained to document all transfers and receipts of the samples. Be sure that the sample containers are labeled with the sample location and/or well number, sample identification, the date and time of collection, the analysis to be performed, the preservative added (if any), the sampler’s initials, and any other pertinent information for sample identification. The labels should contain a unique identifier (i.e., unique well numbers) that can be traced to the COC form. The details of sample collection must be documented on the COC. The COC must include the following: 1. Description of each sample (including QA/QC samples) and the number of containers (sample location and identification) 2. Signature of the sampler 3. Date and time of sample collection 4. Analytical method to be performed 5. Sample type (i.e., water or soil) 6. Regulatory agency (i.e., NCDENR/DWM – SW Section) 7. Signatures of all persons relinquishing and receiving custody of the samples 8. Dates and times of custody transfers b.) Pack samples so that they are segregated by site, sampling location or by sample analysis type. When COC samples are involved, segregate samples in coolers by site. If samples from multiple sites will fit in one cooler, they may be packed in the same cooler with the associated field sheets and a single COC form for all. Coolers should not exceed a maximum weight of 50 lbs. Use additional coolers as necessary. All sample containers should be placed in plastic bags (segregated by analysis and location) and completely surrounded by ice. 1. Prepare and place trip blanks in an ice filled cooler before leaving for the field. 2. Segregate samples by analysis and place in sealable plastic bags. 3. Pack samples carefully in the cooler placing ice around the samples. 4. Review the COC. The COC form must accompany the samples to the laboratory. The trip blank(s) must also be recorded on the COC form. 5. Place completed COC form in a waterproof bag, sealed and taped under the lid of the cooler. 6. Secure shipping containers with strapping tape to avoid accidental opening. 7. For COC samples, a tamper-proof seal may also be placed over the cooler lid or over a bag or container containing the samples inside the shipping cooler. Rev 4-08 4 8. "COC" or "EMERG" should be written in indelible ink on the cooler seal to alert sample receipt technicians to priority or special handling samples. 9. The date and sample handler's signature must also be written on the COC seal. 10. Deliver the samples to the laboratory or ship by commercial courier. NOTE: If transport time to the laboratory is not long enough to allow samples to be cooled to 4° C, a temperature reading of the sample source must be documented as the field temperature on the COC form. A downward trend in temperature will be adequate even if cooling to 4° C is not achieved. The field temperature should always be documented if there is any question as to whether samples will have time to cool to 4° C during shipment. Thermometers must be calibrated annually against an NIST traceable thermometer and documentation must be retained. Rev 4-08 5 Appendix A - Decontamination of Field Equipment Decontamination of personnel, sampling equipment, and containers - before and after sampling - must be used to ensure collection of representative samples and to prevent the potential spread of contamination. Decontamination of personnel prevents ingestion and absorption of contaminants. It must be done with a soap and water wash and deionized or distilled water rinse. Certified pre-cleaned sampling equipment and containers may also be used. All previously used sampling equipment must be properly decontaminated before sampling and between sampling locations. This prevents the introduction of contamination into uncontaminated samples and avoids cross-contamination of samples. Cross-contamination can be a significant problem when attempting to characterize extremely low concentrations of organic compounds or when working with soils that are highly contaminated. Clean, solvent-resistant gloves and appropriate protective equipment must be worn by persons decontaminating tools and equipment. Cleaning Reagents Recommendations for the types and grades of various cleaning supplies are outlined below. The recommended reagent types or grades were selected to ensure that the cleaned equipment is free from any detectable contamination. a.) Detergents: Use Liqui-Nox (or a non-phosphate equivalent) or Alconox (or equivalent). Liqui-Nox (or equivalent) is recommended by EPA, although Alconox (or equivalent) may be substituted if the sampling equipment will not be used to collect phosphorus or phosphorus containing compounds. b.) Solvents: Use pesticide grade isopropanol as the rinse solvent in routine equipment cleaning procedures. This grade of alcohol must be purchased from a laboratory supply vendor. Rubbing alcohol or other commonly available sources of isopropanol are not acceptable. Other solvents, such as acetone or methanol, may be used as the final rinse solvent if they are pesticide grade. However, methanol is more toxic to the environment and acetone may be an analyte of interest for volatile organics. 1. Do not use acetone if volatile organics are of interest 2. Containerize all methanol wastes (including rinses) and dispose as a hazardous waste. Pre-clean equipment that is heavily contaminated with organic analytes. Use reagent grade acetone and hexane or other suitable solvents. Use pesticide grade methylene chloride when cleaning sample containers. Store all solvents away from potential sources of contamination. c.) Analyte-Free Water Sources: Analyte-free water is water in which all analytes of interest and all interferences are below method detection limits. Maintain documentation (such as results from equipment blanks) to demonstrate the reliability and purity of analyte-free water source(s). The source of the water must meet the requirements of the analytical method and must be free from the analytes of interest. In general, the following water types are associated with specific analyte groups: 1. Milli-Q (or equivalent polished water): suitable for all analyses. Rev 4-08 6 2. Organic-free: suitable for volatile and extractable organics. 3. Deionized water: may not be suitable for volatile and extractable organics. 4. Distilled water: not suitable for volatile and extractable organics, metals or ultratrace metals. Use analyte-free water for blank preparation and the final decontamination water rinse. In order to minimize long-term storage and potential leaching problems, obtain or purchase analyte-free water just prior to the sampling event. If obtained from a source (such as a laboratory), fill the transport containers and use the contents for a single sampling event. Empty the transport container(s) at the end of the sampling event. Discard any analyte-free water that is transferred to a dispensing container (such as a wash bottle or pump sprayer) at the end of each sampling day. d.) Acids: 1. Reagent Grade Nitric Acid: 10 - 15% (one volume concentrated nitric acid and five volumes deionized water). Use for the acid rinse unless nitrogen components (e.g., nitrate, nitrite, etc.) are to be sampled. If sampling for ultra-trace levels of metals, use an ultra-pure grade acid. 2. Reagent Grade Hydrochloric Acid: 10% hydrochloric acid (one volume concentrated hydrochloric and three volumes deionized water). Use when nitrogen components are to be sampled. 3. If samples for both metals and the nitrogen-containing components are collected with the equipment, use the hydrochloric acid rinse, or thoroughly rinse with hydrochloric acid after a nitric acid rinse. If sampling for ultra trace levels of metals, use an ultra-pure grade acid. 4. Freshly prepared acid solutions may be recycled during the sampling event or cleaning process. Dispose of any unused acids according to local ordinances. Reagent Storage Containers The contents of all containers must be clearly marked. a.) Detergents: 1. Store in the original container or in a HDPE or PP container. b.) Solvents: 1. Store solvents to be used for cleaning or decontamination in the original container until use in the field. If transferred to another container for field use, use either a glass or Teflon container. 2. Use dispensing containers constructed of glass, Teflon or stainless steel. Note: If stainless steel sprayers are used, any gaskets that contact the solvents must be constructed of inert materials. c.) Analyte-Free Water: 1. Transport in containers appropriate for the type of water stored. If the water is commercially purchased (e.g., grocery store), use the original containers when transporting the water to the field. Containers made of glass, Teflon, polypropylene or HDPE are acceptable. 2. Use glass or Teflon to transport organic-free sources of water on-site. Polypropylene or HDPE may be used, but are not recommended. Rev 4-08 7 3. Dispense water from containers made of glass, Teflon, HDPE or polypropylene. 4. Do not store water in transport containers for more than three days before beginning a sampling event. 5. If working on a project that has oversight from EPA Region 4, use glass containers for the transport and storage of all water. 6. Store and dispense acids using containers made of glass, Teflon or plastic. General Requirements a.) Prior to use, clean/decontaminate all sampling equipment (pumps, tubing, lanyards, split spoons, etc.) that will be exposed to the sample. b.) Before installing, clean (or obtain as certified pre-cleaned) all equipment that is dedicated to a single sampling point and remains in contact with the sample medium (e.g., permanently installed groundwater pump). If you use certified pre-cleaned equipment no cleaning is necessary. 1. Clean this equipment any time it is removed for maintenance or repair. 2. Replace dedicated tubing if discolored or damaged. c.) Clean all equipment in a designated area having a controlled environment (house, laboratory, or base of field operations) and transport it to the field, pre-cleaned and ready to use, unless otherwise justified. d.) Rinse all equipment with water after use, even if it is to be field-cleaned for other sites. Rinse equipment used at contaminated sites or used to collect in-process (e.g., untreated or partially treated wastewater) samples immediately with water. e.) Whenever possible, transport sufficient clean equipment to the field so that an entire sampling event can be conducted without the need for cleaning equipment in the field. f.) Segregate equipment that is only used once (i.e., not cleaned in the field) from clean equipment and return to the in-house cleaning facility to be cleaned in a controlled environment. g.) Protect decontaminated field equipment from environmental contamination by securely wrapping and sealing with one of the following: 1. Aluminum foil (commercial grade is acceptable) 2. Untreated butcher paper 3. Clean, untreated, disposable plastic bags. Plastic bags may be used for all analyte groups except volatile and extractable organics. Plastic bags may be used for volatile and extractable organics, if the equipment is first wrapped in foil or butcher paper, or if the equipment is completely dry. Cleaning Sample Collection Equipment a.) On-Site/In-Field Cleaning – Cleaning equipment on-site is not recommended because environmental conditions cannot be controlled and wastes (solvents and acids) must be containerized for proper disposal. 1. Ambient temperature water may be substituted in the hot, sudsy water bath and hot water rinses. NOTE: Properly dispose of all solvents and acids. Rev 4-08 8 2. Rinse all equipment with water after use, even if it is to be field-cleaned for other sites. 3. Immediately rinse equipment used at contaminated sites or used to collect in-process (e.g., untreated or partially treated wastewater) samples with water. b.) Heavily Contaminated Equipment - In order to avoid contaminating other samples, isolate heavily contaminated equipment from other equipment and thoroughly decontaminate the equipment before further use. Equipment is considered heavily contaminated if it: 1. Has been used to collect samples from a source known to contain significantly higher levels than background. 2. Has been used to collect free product. 3. Has been used to collect industrial products (e.g., pesticides or solvents) or their byproducts. NOTE: Cleaning heavily contaminated equipment in the field is not recommended. c.) On-Site Procedures: 1. Protect all other equipment, personnel and samples from exposure by isolating the equipment immediately after use. 2. At a minimum, place the equipment in a tightly sealed, untreated, plastic bag. 3. Do not store or ship the contaminated equipment next to clean, decontaminated equipment, unused sample containers, or filled sample containers. 4. Transport the equipment back to the base of operations for thorough decontamination. 5. If cleaning must occur in the field, document the effectiveness of the procedure, collect and analyze blanks on the cleaned equipment. d.) Cleaning Procedures: 1. If organic contamination cannot be readily removed with scrubbing and a detergent solution, pre-rinse equipment by thoroughly rinsing or soaking the equipment in acetone. 2. Use hexane only if preceded and followed by acetone. 3. In extreme cases, it may be necessary to steam clean the field equipment before proceeding with routine cleaning procedures. 4. After the solvent rinses (and/or steam cleaning), use the appropriate cleaning procedure. Scrub, rather than soak, all equipment with sudsy water. If high levels of metals are suspected and the equipment cannot be cleaned without acid rinsing, soak the equipment in the appropriate acid. Since stainless steel equipment should not be exposed to acid rinses, do not use stainless steel equipment when heavy metal contamination is suspected or present. 5. If the field equipment cannot be cleaned utilizing these procedures, discard unless further cleaning with stronger solvents and/or oxidizing solutions is effective as evidenced by visual observation and blanks. 6. Clearly mark or disable all discarded equipment to discourage use. Rev 4-08 9 e.) General Cleaning - Follow these procedures when cleaning equipment under controlled conditions. Check manufacturer's instructions for cleaning restrictions and/or recommendations. 1. Procedure for Teflon, stainless steel and glass sampling equipment: This procedure must be used when sampling for ALL analyte groups. (Extractable organics, metals, nutrients, etc. or if a single decontamination protocol is desired to clean all Teflon, stainless steel and glass equipment.) Rinse equipment with hot tap water. Soak equipment in a hot, sudsy water solution (Liqui-Nox or equivalent). If necessary, use a brush to remove particulate matter or surface film. Rinse thoroughly with hot tap water. If samples for trace metals or inorganic analytes will be collected with the equipment that is not stainless steel, thoroughly rinse (wet all surfaces) with the appropriate acid solution. Rinse thoroughly with analyte-free water. Make sure that all equipment surfaces are thoroughly flushed with water. If samples for volatile or extractable organics will be collected, rinse with isopropanol. Wet equipment surfaces thoroughly with free- flowing solvent. Rinse thoroughly with analyte-free water. Allow to air dry. Wrap and seal as soon as the equipment has air-dried. If isopropanol is used, the equipment may be air-dried without the final analyte-free water rinse; however, the equipment must be completely dry before wrapping or use. Wrap clean sampling equipment according to the procedure described above. 2. General Cleaning Procedure for Plastic Sampling Equipment: Rinse equipment with hot tap water. Soak equipment in a hot, sudsy water solution (Liqui-Nox or equivalent). If necessary, use a brush to remove particulate matter or surface film. Rinse thoroughly with hot tap water. Thoroughly rinse (wet all surfaces) with the appropriate acid solution. Check manufacturer's instructions for cleaning restrictions and/or recommendations. Rinse thoroughly with analyte-free water. Be sure that all equipment surfaces are thoroughly flushed. Allow to air dry as long as possible. Wrap clean sampling equipment according to the procedure described above. Rev 4-08 10 Appendix B - Collecting Soil Samples Soil samples are collected for a variety of purposes. A methodical sampling approach must be used to assure that sample collection activities provide reliable data. Sampling must begin with an evaluation of background information, historical data and site conditions. Soil Field Screening Procedures Field screening is the use of portable devices capable of detecting petroleum contaminants on a real-time basis or by a rapid field analytical technique. Field screening should be used to help assess locations where contamination is most likely to be present. When possible, field-screening samples should be collected directly from the excavation or from the excavation equipment's bucket. If field screening is conducted only from the equipment's bucket, then a minimum of one field screening sample should be collected from each 10 cubic yards of excavated soil. If instruments or other observations indicate contamination, soil should be separated into stockpiles based on apparent degrees of contamination. At a minimum, soil suspected of contamination must be segregated from soil observed to be free of contamination. a.) Field screening devices – Many field screen instruments are available for detecting contaminants in the field on a rapid or real-time basis. Acceptable field screening instruments must be suitable for the contaminant being screened. The procdedure for field screening using photoionization detectors (PIDs) and flame ionization detectors (FIDs) is described below. If other instruments are used, a description of the instrument or method and its intended use must be provided to the Solid Waste Section. Whichever field screening method is chosen, its accuracy must be verified throughout the sampling process. Use appropriate standards that match the use intended for the data. Unless the Solid Waste Section indicates otherwise, wherever field screening is recommended in this document, instrumental or analytical methods of detection must be used, not olfactory or visual screening methods. b.) Headspace analytical screening procedure for filed screening (semi-quantitative field screening) - The most commonly used field instruments for Solid Waste Section site assessments are FIDs and PIDs. When using FIDs and PIDs, use the following headspace screening procedure to obtain and analyze field-screening samples: 1. Partially fill (one-third to one-half) a clean jar or clean ziplock bag with the sample to be analyzed. The total capacity of the jar or bag may not be less than eight ounces (app. 250 ml), but the container should not be so large as to allow vapor diffusion and stratification effects to significantly affect the sample. 2. If the sample is collected from a spilt-spoon, it must be transferred to the jar or bag for headspace analysis immediately after opening the split- spoon. If the sample is collected from an excavation or soil pile, it must be collected from freshly uncovered soil. Rev 4-08 11 3. If a jar is used, it must be quickly covered with clean aluminum foil or a jar lid; screw tops or thick rubber bands must be used to tightly seal the jar. If a zip lock bag is used, it must be quickly sealed shut. 4. Headspace vapors must be allowed to develop in the container for at least 10 minutes but no longer than one hour. Containers must be shaken or agitated for 15 seconds at the beginning and the end of the headspace development period to assist volatilization. Temperatures of the headspace must be warmed to at least 5° C (approximately 40° F) with instruments calibrated for the temperature used. 5. After headspace development, the instrument sampling probe must be inserted to a point about one-half the headspace depth. The container opening must be minimized and care must be taken to avoid the uptake of water droplets and soil particulates. 6. After probe insertion, the highest meter reading must be taken and recorded. This will normally occur between two and five seconds after probe insertion. If erratic meter response occurs at high organic vapor concentrations or conditions of elevated headspace moisture, a note to that effect must accompany the headspace data. 7. All field screening results must be documented in the field record or log book. Soil Sample Collection Procedures for Laboratory Samples The number and type of laboratory samples collected depends on the purpose of the sampling activity. Samples analyzed with field screening devices may not be substituted for required laboratory samples. a.) General Sample Collection - When collecting samples from potentially contaminated soil, care should be taken to reduce contact with skin or other parts of the body. Disposable gloves should be worn by the sample collector and should be changed between samples to avoid cross-contamination. Soil samples should be collected in a manner that causes the least disturbance to the internal structure of the sample and reduces its exposure to heat, sunlight and open air. Likewise, care should be taken to keep the samples from being contaminated by other materials or other samples collected at the site. When sampling is to occur over an extended period of time, it is necessary to insure that the samples are collected in a comparable manner. All samples must be collected with disposable or clean tools that have been decontaminated. Disposable gloves must be worn and changed between sample collections. Sample containers must be filled quickly. Soil samples must be placed in containers in the order of volatility, for example, volatile organic aromatic samples must be taken first, organics next, then heavier range organics, and finally soil classification samples. Containers must be quickly and adequately sealed, and rims must be cleaned before tightening lids. Tape may be used only if known not to affect sample analysis. Sample containers must be clearly labeled. Containers must immediately be preserved according to procedures in this Section. Unless specified Rev 4-08 12 otherwise, at a minimum, the samples must be immediately cooled to 4 ± 2°C and this temperature must be maintained throughout delivery to the laboratory. b.) Surface Soil Sampling - Surface soil is generally classified as soil between the ground surface and 6-12 inches below ground surface. Remove leaves, grass and surface debris from the area to be sampled. Select an appropriate, pre-cleaned sampling device and collect the sample. Transfer the sample to the appropriate sample container. Clean the outside of the sample container to remove excess soil. Label the sample container, place on wet ice to preserve at 4°C, and complete the field notes. c.) Subsurface Soil Sampling – The interval begins at approximately 12 inches below ground surface. Collect samples for volatile organic analyses. For other analyses, select an appropriate, pre-cleaned sampling device and collect the sample. Transfer the sample to the appropriate sample container. Clean the outside of the sample container to remove excess soil. Label the sample container, place on wet ice to preserve at 4°C, and complete field notes. d.) Equipment for Reaching the Appropriate Soil Sampling Depth - Samples may be collected using a hollow stem soil auger, direct push, Shelby tube, split-spoon sampler, or core barrel. These sampling devices may be used as long as an effort is made to reduce the loss of contaminants through volatilization. In these situations, obtain a sufficient volume of so the samples can be collected without volatilization and disturbance to the internal structure of the samples. Samples should be collected from cores of the soil. Non-disposable sampling equipment must be decontaminated between each sample location. NOTE: If a confining layer has been breached during sampling, grout the hole to land. e.) Equipment to Collect Soil Samples - Equipment and materials that may be used to collect soil samples include disposable plastic syringes and other “industry-standard” equipment and materials that are contaminant-free. Non-disposable sampling equipment must be decontaminated between each sample location. Rev 4-08 13 Appendix C - Collecting Groundwater Samples Groundwater samples are collected to identify, investigate, assess and monitor the concentration of dissolved contaminant constituents. To properly assess groundwater contamination, first install sampling points (monitoring wells, etc.) to collect groundwater samples and then perform specific laboratory analyses. All monitoring wells should be constructed in accordance with 15A NCAC 2C .0100 and sampled as outlined in this section. Groundwater monitoring is conducted using one of two methods: 1. Portable Monitoring: Monitoring that is conducted using sampling equipment that is discarded between sampling locations. Equipment used to collect a groundwater sample from a well such as bailers, tubing, gloves, and etc. are disposed of after sample collection. A new set of sampling equipment is used to collect a groundwater sample at the next monitor well. 2. Dedicated Monitoring: Monitoring that utilizes permanently affixed down-well and well head components that are capped after initial set-up. Most dedicated monitoring systems are comprised of an in-well submersible bladder pump, with air supply and sample discharge tubing, and an above-ground driver/controller for regulation of flow rates and volumes. The pump and all tubing housed within the well should be composed of Teflon or stainless steel components. This includes seals inside the pump, the pump body, and fittings used to connect tubing to the pump. Because ground water will not be in contact with incompatible constituents and because the well is sealed from the surface, virtually no contamination is possible from intrinsic sources during sampling and between sampling intervals. All dedicated monitoring systems must be approved by the Solid Waste Section before installation. Groundwater samples may be collected from a number of different configurations. Each configuration is associated with a unique set of sampling equipment requirements and techniques: 1. Wells without Plumbing: These wells require equipment to be brought to the well to purge and sample unless dedicated equipment is placed in the well. 2. Wells with In-Place Plumbing: Wells with in-place plumbing do not require equipment to be brought to the well to purge and sample. In-place plumbing is generally considered permanent equipment routinely used for purposes other than purging and sampling, such as for water supply. 3. Air Strippers or Remedial Systems: These types of systems are installed as remediation devices. Rev 4-08 14 Groundwater Sample Preparation The type of sample containers used depends on the type of analysis performed. First, determine the type(s) of contaminants expected and the proper analytical method(s). Be sure to consult your selected laboratory for its specific needs and requirements prior to sampling. Next, prepare the storage and transport containers (ice chest, etc.) before taking any samples so that each sample can be placed in a chilled environment immediately after collection. Use groundwater purging and sampling equipment constructed of only non-reactive, non- leachable materials that are compatible with the environment and the selected analytes. In selecting groundwater purging and sampling equipment, give consideration to the depth of the well, the depth to groundwater, the volume of water to be evacuated, the sampling and purging technique, and the analytes of interest. Additional supplies, such as reagents and preservatives, may be necessary. All sampling equipment (bailers, tubing, containers, etc.) must be selected based on its chemical compatibility with the source being sampled (e.g., water supply well, monitoring well) and the contaminants potentially present. a.) Pumps - All pumps or pump tubing must be lowered and retrieved from the well slowly and carefully to minimize disturbance to the formation water. This is especially critical at the air/water interface. 1. Above-Ground Pumps • Variable Speed Peristaltic Pump: Use a variable speed peristaltic pump to purge groundwater from wells when the static water level in the well is no greater than 20- 25 feet below land surface (BLS). If the water levels are deeper than 18-20 feet BLS, the pumping velocity will decrease. A variable speed peristaltic pump can be used for normal purging and sampling, and sampling low permeability aquifers or formations. Most analyte groups can be sampled with a peristaltic pump if the tubing and pump configurations are appropriate. • Variable Speed Centrifugal Pump: A variable speed centrifugal pump can be used to purge groundwater from 2-inch and larger internal diameter wells. Do not use this type of pump to collect groundwater samples. When purging is complete, do not allow the water that remains in the tubing to fall back into the well. Install a check valve at the end of the purge tubing. 2. Submersible Pumps • Variable Speed Electric Submersible Pump: A variable speed submersible pump can be used to purge and sample groundwater from 2-inch and larger internal diameter wells. A variable speed submersible pump can be used for normal purging and sampling, and sampling low permeability aquifers or formations. The pump housing, fittings, check valves and associated hardware must be constructed of stainless steel. All other materials must be Rev 4-08 15 compatible with the analytes of interest. Install a check valve at the output side of the pump to prevent backflow. If purging and sampling for organics, the entire length of the delivery tube must be Teflon, polyethylene or polypropylene (PP) tubing; the electrical cord must be sealed in Teflon, polyethylene or PP and any cabling must be sealed in Teflon, polyethylene or PP, or be constructed of stainless steel; and all interior components that contact the sample water (impeller, seals, gaskets, etc.) must be constructed of stainless steel or Teflon. 3. Variable Speed Bladder Pump: A variable speed, positive displacement, bladder pump can be used to purge and sample groundwater from 3/4-inch and larger internal diameter wells. • A variable speed bladder pump can be used for normal purging and sampling, and sampling low permeability aquifers or formations. • The bladder pump system is composed of the pump, the compressed air tubing, the water discharge tubing, the controller and a compressor, or a compressed gas supply. • The pump consists of a bladder and an exterior casing or pump body that surrounds the bladder and two (2) check valves. These parts can be composed of various materials, usually combinations of polyvinyl chloride (PVC), Teflon, polyethylene, PP and stainless steel. Other materials must be compatible with the analytes of interest. • If purging and sampling for organics, the pump body must be constructed of stainless steel. The valves and bladder must be Teflon, polyethylene or PP; the entire length of the delivery tube must be Teflon, polyethylene or PP; and any cabling must be sealed in Teflon, polyethylene or PP, or be constructed of stainless steel. • Permanently installed pumps may have a PVC pump body as long as the pump remains in contact with the water in the well. b.) Bailers 1. Purging: Bailers must be used with caution because improper bailing can cause changes in the chemistry of the water due to aeration and loosening particulate matter in the space around the well screen. Use a bailer if there is non-aqueous phase liquid (free product) in the well or if non-aqueous phase liquid is suspected to be in the well. 2. Sampling: Bailers must be used with caution. 3. Construction and Type: Bailers must be constructed of materials compatible with the analytes of interest. Stainless steel, Teflon, rigid medical grade PVC, polyethylene and PP bailers may be used to sample all analytes. Use disposable bailers when sampling grossly contaminated sample sources. NCDENR recommends using dual check valve bailers when collecting samples. Use bailers with a controlled flow bottom to collect volatile organic samples. Rev 4-08 16 4. Contamination Prevention: Keep the bailer wrapped (foil, butcher paper, etc.) until just before use. Use protective gloves to handle the bailer once it is removed from its wrapping. Handle the bailer by the lanyard to minimize contact with the bailer surface. c.) Lanyards 1. Lanyards must be made of non-reactive, non-leachable material. They may be cotton twine, nylon, stainless steel, or may be coated with Teflon, polyethylene or PP. 2. Discard cotton twine, nylon, and non-stainless steel braided lanyards after sampling each monitoring well. 3. Decontaminate stainless steel, coated Teflon, polyethylene and PP lanyards between monitoring wells. They do not need to be decontaminated between purging and sampling operations. Water Level and Purge Volume Determination The amount of water that must be purged from a well is determined by the volume of water and/or field parameter stabilization. a.) General Equipment Considerations - Selection of appropriate purging equipment depends on the analytes of interest, the well diameter, transmissivity of the aquifer, the depth to groundwater, and other site conditions. 1. Use of a pump to purge the well is recommended unless no other equipment can be used or there is non-aqueous phase liquid in the well, or non-aqueous phase liquid is suspected to be in the well. 2. Bailers must be used with caution because improper bailing: • Introduces atmospheric oxygen, which may precipitate metals (i.e., iron) or cause other changes in the chemistry of the water in the sample (i.e., pH). • Agitates groundwater, which may bias volatile and semi- volatile organic analyses due to volatilization. • Agitates the water in the aquifer and resuspends fine particulate matter. • Surges the well, loosening particulate matter in the annular space around the well screen. • May introduce dirt into the water column if the sides of the casing wall are scraped. NOTE: It is critical for bailers to be slowly and gently immersed into the top of the water column, particularly during the final stages of purging. This minimizes turbidity and disturbance of volatile organic constituents. b.) Initial Inspection 1. Remove the well cover and remove all standing water around the top of the well casing (manhole) before opening the well. 2. Inspect the exterior protective casing of the monitoring well for damage. Document the results of the inspection if there is a problem. 3. It is recommended that you place a protective covering around the well head. Replace the covering if it becomes soiled or ripped. Rev 4-08 17 4. Inspect the well lock and determine whether the cap fits tightly. Replace the cap if necessary. c.) Water Level Measurements - Use an electronic probe or chalked tape to determine the water level. Decontaminate all equipment before use. Measure the depth to groundwater from the top of the well casing to the nearest 0.01 foot. Always measure from the same reference point or survey mark on the well casing. Record the measurement. 1. Electronic Probe: Decontaminate all equipment before use. Follow the manufacturer’s instructions for use. Record the measurement. 2. Chalked Line Method: Decontaminate all equipment before use. Lower chalked tape into the well until the lower end is in the water. This is usually determined by the sound of the weight hitting the water. Record the length of the tape relative to the reference point. Remove the tape and note the length of the wetted portion. Record the length. Determine the depth to water by subtracting the length of the wetted portion from the total length. Record the result. d.) Water Column Determination - To determine the length of the water column, subtract the depth to the top of the water column from the total well depth (or gauged well depth if silting has occurred). The total well depth depends on the well construction. If gauged well depth is used due to silting, report total well depth also. Some wells may be drilled in areas of sinkhole, karst formations or rock leaving an open borehole. Attempt to find the total borehole depth in cases where there is an open borehole below the cased portion. e.) Well Water Volume - Calculate the total volume of water, in gallons, in the well using the following equation: V = (0.041)d x d x h Where: V = volume in gallons d = well diameter in inches h = height of the water column in feet The total volume of water in the well may also be determined with the following equation by using a casing volume per foot factor (Gallons per Foot of Water) for the appropriate diameter well: V = [Gallons per Foot of Water] x h Where: V = volume in gallons h = height of the water column in feet Record all measurements and calculations in the field records. f.) Purging Equipment Volume - Calculate the total volume of the pump, associated tubing and flow cell (if used), using the following equation: V = p + ((0.041)d x d x l) + fc Where: V = volume in gallons p = volume of pump in gallons d = tubing diameter in inches l = length of tubing in feet Rev 4-08 18 fc = volume of flow cell in gallons g.) If the groundwater elevation data are to be used to construct groundwater elevation contour maps, all water level measurements must be taken within the same 24 hour time interval when collecting samples from multiple wells on a site, unless a shorter time period is required. If the site is tidally influenced, complete the water level measurements within the time frame of an incoming or outgoing tide. Well Purging Techniques The selection of the purging technique and equipment is dependent on the hydrogeologic properties of the aquifer, especially depth to groundwater and hydraulic conductivity. a.) Measuring the Purge Volume - The volume of water that is removed during purging must be recorded. Therefore, you must measure the volume during the purging operation. 1. Collect the water in a graduated container and multiply the number of times the container was emptied by the volume of the container, OR 2. Estimate the volume based on pumping rate. This technique may be used only if the pumping rate is constant. Determine the pumping rate by measuring the amount of water that is pumped for a fixed period of time, or use a flow meter. • Calculate the amount of water that is discharged per minute: D = Measured Amount/Total Time In Minutes • Calculate the time needed to purge one (1) well volume or one (1) purging equipment volume: Time = V/D Where: V = well volume or purging equipment volume D = discharge rate • Make new measurements each time the pumping rate is changed. 3. Use a totalizing flow meter. • Record the reading on the totalizer prior to purging. • Record the reading on the totalizer at the end of purging. • To obtain the volume purged, subtract the reading on the totalizer prior to purging from the reading on the totalizer at the end of purging. • Record the times that purging begins and ends in the field records. b.) Purging Measurement Frequency - When purging a well that has the well screen fully submerged and the pump or intake tubing is placed within the well casing above the well screen or open hole, purge a minimum of one (1) well volume prior to collecting measurements of the field parameters. Allow at least one quarter (1/4) well volume to purge between subsequent measurements. When purging a well that has the pump or intake tubing placed within a fully submerged well screen or open hole, purge until the water level has stabilized (well recovery rate equals the purge rate), then purge a minimum of one (1) volume of the pump, associated tubing and flow cell (if used) prior to collecting measurements of the field parameters. Take measurements of the field parameters no sooner than two (2) to three (3) minutes apart. Purge at least Rev 4-08 19 three (3) volumes of the pump, associated tubing and flow cell, if used, prior to collecting a sample. When purging a well that has a partially submerged well screen, purge a minimum of one (1) well volume prior to collecting measurements of the field parameters. Take measurements of the field parameters no sooner than two (2) to three (3) minutes apart. c.) Purging Completion - Wells must be adequately purged prior to sample collection to ensure representation of the aquifer formation water, rather than stagnant well water. This may be achieved by purging three volumes from the well or by satisfying any one of the following three purge completion criteria: 1.) Three (3) consecutive measurements in which the three (3) parameters listed below are within the stated limits, dissolved oxygen is no greater than 20 percent of saturation at the field measured temperature, and turbidity is no greater than 20 Nephelometric Turbidity Units (NTUs). • Temperature: + 0.2° C • pH: + 0.2 Standard Units • Specific Conductance: + 5.0% of reading Document and report the following, as applicable. The last four items only need to be submitted once: • Purging rate. • Drawdown in the well, if any. • A description of the process and the data used to design the well. • The equipment and procedure used to install the well. • The well development procedure. • Pertinent lithologic or hydrogeologic information. 2.) If it is impossible to get dissolved oxygen at or below 20 percent of saturation at the field measured temperature or turbidity at or below 20 NTUs, then three (3) consecutive measurements of temperature, pH, specific conductance and the parameter(s) dissolved oxygen and/or turbidity that do not meet the requirements above must be within the limits below. The measurements are: • Temperature: + 0.2° C • pH: + 0.2 Standard Units • Specific Conductance: + 5.0% of reading • Dissolved Oxygen: + 0.2 mg/L or 10%, whichever is greater • Turbidity: + 5 NTUs or 10%, whichever is greater Additionally, document and report the following, as applicable, except that the last four(4) items only need to be submitted once: • Purging rate. • Drawdown in the well, if any. • A description of conditions at the site that may cause the dissolved oxygen to be high and/or dissolved oxygen measurements made within the screened or open hole portion of the well with a downhole dissolved oxygen probe. Rev 4-08 20 • A description of conditions at the site that may cause the turbidity to be high and any procedures that will be used to minimize turbidity in the future. • A description of the process and the data used to design the well. • The equipment and procedure used to install the well. • The well development procedure. • Pertinent lithologic or hydrogeologic information. 3.) If after five (5) well volumes, three (3) consecutive measurements of the field parameters temperature, pH, specific conductance, dissolved oxygen, and turbidity are not within the limits stated above, check the instrument condition and calibration, purging flow rate and all tubing connections to determine if they might be affecting the ability to achieve stable measurements. It is at the discretion of the consultant/contractor whether or not to collect a sample or to continue purging. Further, the report in which the data are submitted must include the following, as applicable. The last four (4) items only need to be submitted once. • Purging rate. • Drawdown in the well, if any. • A description of conditions at the site that may cause the Dissolved Oxygen to be high and/or Dissolved Oxygen measurements made within the screened or open hole portion of the well with a downhole dissolved oxygen probe. • A description of conditions at the site that may cause the turbidity to be high and any procedures that will be used to minimize turbidity in the future. • A description of the process and the data used to design the well. • The equipment and procedure used to install the well. • The well development procedure. • Pertinent lithologic or hydrogeologic information. If wells have previously and consistently purged dry, and the current depth to groundwater indicates that the well will purge dry during the current sampling event, minimize the amount of water removed from the well by using the same pump to purge and collect the sample: • Place the pump or tubing intake within the well screened interval. • Use very small diameter Teflon, polyethylene or PP tubing and the smallest possible pump chamber volume. This will minimize the total volume of water pumped from the well and reduce drawdown. • Select tubing that is thick enough to minimize oxygen transfer through the tubing walls while pumping. Rev 4-08 21 • Pump at the lowest possible rate (100 mL/minute or less) to reduce drawdown to a minimum. • Purge at least two (2) volumes of the pumping system (pump, tubing and flow cell, if used). • Measure pH, specific conductance, temperature, dissolved oxygen and turbidity, then begin to collect the samples. Collect samples immediately after purging is complete. The time period between completing the purge and sampling cannot exceed six hours. If sample collection does not occur within one hour of purging completion, re-measure the five field parameters: temperature, pH, specific conductance, dissolved oxygen and turbidity, just prior to collecting the sample. If the measured values are not within 10 percent of the previous measurements, re-purge the well. The exception is “dry” wells. d.) Lanyards 1. Securely fasten lanyards, if used, to any downhole equipment (bailers, pumps, etc.). 2. Use bailer lanyards in such a way that they do not touch the ground surface. Wells Without Plumbing a.) Tubing/Pump Placement 1. If attempting to minimize the volume of purge water, position the intake hose or pump at the midpoint of the screened or open hole interval. 2. If monitoring well conditions do not allow minimizing of the purge water volume, position the pump or intake hose near the top of the water column. This will ensure that all stagnant water in the casing is removed. 3. If the well screen or borehole is partially submerged, and the pump will be used for both purging and sampling, position the pump midway between the measured water level and the bottom of the screen. Otherwise, position the pump or intake hose near the top of the water column. b.) Non-dedicated (portable) pumps 1. Variable Speed Peristaltic Pump • Wear sampling gloves to position the decontaminated pump and tubing. • Attach a short section of tubing to the discharge side of the pump and into a graduated container. • Attach one end of a length of new or precleaned tubing to the pump head flexible hose. • Place the tubing as described in one of the options listed above. • Change gloves before beginning to purge. • Measure the depth to groundwater at frequent intervals. • Record these measurements. • Adjust the purging rate so that it is equivalent to the well recovery rate to minimize drawdown. Rev 4-08 22 • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdrawal rate with the recharge rate. • If the water table continues to drop during pumping, lower the tubing at the approximate rate of drawdown so that water is removed from the top of the water column. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. • Decontaminate the pump and tubing between wells (see Appendix C) or if precleaned tubing is used for each well, only the pump. 2. Variable Speed Centrifugal Pump • Position fuel powered equipment downwind and at least 10 feet from the well head. Make sure that the exhaust faces downwind. • Wear sampling gloves to position the decontaminated pump and tubing. • Place the decontaminated suction hose so that water is always pumped from the top of the water column. • Change gloves before beginning to purge. • Equip the suction hose with a foot valve to prevent purge water from re-entering the well. • Measure the depth to groundwater at frequent intervals. • Record these measurements. • To minimize drawdown, adjust the purging rate so that it is equivalent to the well recovery rate. • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdrawal rate with the recharge rate. • If the water table continues to drop during pumping, lower the tubing at the approximate rate of drawdown so that the water is removed from the top of the water column. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. • Decontaminate the pump and tubing between wells or if precleaned tubing is used for each well, only the pump. 3. Variable Speed Electric Submersible Pump • Position fuel powered equipment downwind and at least 10 feet from the well head. Make sure that the exhaust faces downwind. • Wear sampling gloves to position the decontaminated pump and tubing. • Carefully position the decontaminated pump. Rev 4-08 23 • Change gloves before beginning to purge. • Measure the depth to groundwater at frequent intervals. • Record these measurements. • To minimize drawdown, adjust the purging rate so that it is equivalent to the well recovery rate. • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdrawal rate with the recharge rate. • If the water table continues to drop during pumping, lower the tubing or pump at the approximate rate of drawdown so that water is removed from the top of the water column. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. • Decontaminate the pump and tubing between wells or only the pump if precleaned tubing is used for each well. 4. Variable Speed Bladder Pump • Position fuel powered equipment downwind and at least 10 feet from the well head. Make sure that the exhaust faces downwind. • Wear sampling gloves to position the decontaminated pump and tubing. • Attach the tubing and carefully position the pump. • Change gloves before beginning purging. • Measure the depth to groundwater at frequent intervals. • Record these measurements. • To minimize drawdown, adjust the purging rate so that it is equivalent to the well recovery rate. • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdrawal rate with the recharge rate. • If the water table continues to drop during pumping, lower the tubing or pump at the approximate rate of drawdown so that water is removed from the top of the water column. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. • Decontaminate the pump and tubing between wells or if precleaned tubing is used for each well, only the pump. c.) Dedicated Portable Pumps 1. Variable Speed Electric Submersible Pump • Position fuel powered equipment downwind and at least 10 feet from the well head. Make sure that the exhaust faces downwind. • Wear sampling gloves. Rev 4-08 24 • Measure the depth to groundwater at frequent intervals. • Record these measurements. • Adjust the purging rate so that it is equivalent to the well recovery rate to minimize drawdown. • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdraw with the recharge rate. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. 2. Variable Speed Bladder Pump • Position fuel powered equipment downwind and at least 10 feet from the well head. Make sure that the exhaust faces downwind. • Wear sampling gloves. • Measure the depth to groundwater at frequent intervals. • Record these measurements. • Adjust the purging rate so that it is equivalent to the well recovery rate to minimize drawdown. • If the purging rate exceeds the well recovery rate, reduce the pumping rate to balance the withdraw with the recharge rate. • Record the purging rate each time the rate changes. • Measure the purge volume. • Record this measurement. 3. Bailers - Using bailers for purging is not recommended unless care is taken to use proper bailing technique, or if free product is present in the well or suspected to be in the well. • Minimize handling the bailer as much as possible. • Wear sampling gloves. • Remove the bailer from its protective wrapping just before use. • Attach a lanyard of appropriate material. • Use the lanyard to move and position the bailer. • Lower and retrieve the bailer slowly and smoothly. • Lower the bailer carefully into the well to a depth approximately a foot above the water column. • When the bailer is in position, lower the bailer into the water column at a rate of 2 cm/sec until the desired depth is reached. • Do not lower the top of the bailer more than one (1) foot below the top of the water table so that water is removed from the top of the water column. • Allow time for the bailer to fill with aquifer water as it descends into the water column. Rev 4-08 25 • Carefully raise the bailer. Retrieve the bailer at the same rate of 2 cm/sec until the bottom of the bailer has cleared to top of the water column. • Measure the purge volume. • Record the volume of the bailer. • Continue to carefully lower and retrieve the bailer as described above until the purging is considered complete, based on either the removal of 3 well volumes. • Remove at least one (1) well volume before collecting measurements of the field parameters. Take each subsequent set of measurements after removing at least one quarter (1/4) well volume between measurements. Groundwater Sampling Techniques a.) Purge wells. b.) Replace protective covering around the well if it is soiled or torn after completing purging operations. c.) Equipment Considerations 1. The following pumps are approved to collect volatile organic samples: • Stainless steel and Teflon variable speed submersible pumps • Stainless steel and Teflon or polyethylene variable speed bladder pumps • Permanently installed PVC bodied pumps (As long as the pump remains in contact with the water in the well at all times) 2. Collect sample from the sampling device and store in sample container. Do not use intermediate containers. 3. To avoid contamination or loss of analytes from the sample, handle sampling equipment as little as possible and minimize equipment exposure to the sample. 4. To reduce chances of cross-contamination, use dedicated equipment whenever possible. “Dedicated” is defined as equipment that is to be used solely for one location for the life of that equipment (e.g., permanently mounted pump). Purchase dedicated equipment with the most sensitive analyte of interest in mind. • Clean or make sure dedicated pumps are clean before installation. They do not need to be cleaned prior to each use, but must be cleaned if they are withdrawn for repair or servicing. • Clean or make sure any permanently mounted tubing is clean before installation. • Change or clean tubing when the pump is withdrawn for servicing. • Clean any replaceable or temporary parts. Rev 4-08 26 • Collect equipment blanks on dedicated pumping systems when the tubing is cleaned or replaced. • Clean or make sure dedicated bailers are clean before placing them into the well. • Collect an equipment blank on dedicated bailers before introducing them into the water column. • Suspend dedicated bailers above the water column if they are stored in the well. Sampling Wells Without Plumbing a.) Sampling with Pumps – The following pumps may be used to sample for organics: • Peristaltic pumps • Stainless steel, Teflon or polyethylene bladder pumps • Variable speed stainless steel and Teflon submersible pumps 1. Peristaltic Pump • Volatile Organics: One of three methods may be used. Remove the drop tubing from the inlet side of the pump; submerge the drop tubing into the water column; prevent the water in the tubing from flowing back into the well; remove the drop tubing from the well; carefully allow the groundwater to drain into the sample vials; avoid turbulence; do not aerate the sample; repeat steps until enough vials are filled. OR Use the pump to fill the drop tubing; quickly remove the tubing from the pump; prevent the water in the tubing from flowing back into the well; remove the drop tubing from the well; carefully allow the groundwater to drain into the sample vials; avoid turbulence; do not aerate the sample; repeat steps until enough vials are filled. OR Use the pump to fill the drop tubing; withdraw the tubing from the well; reverse the flow on the peristaltic pumps to deliver the sample into the vials at a slow, steady rate; repeat steps until enough vials are filled. • Extractable Organics: If delivery tubing is not polyethylene or PP, or is not Teflon lined, use pump and vacuum trap method. Connect the outflow tubing from the container to the influent side of the peristaltic pump. Turn pump on and reduce flow until smooth and even. Discard a Rev 4-08 27 small portion of the sample to allow for air space. Preserve (if required), label, and complete field notes. • Inorganic samples: These samples may be collected from the effluent tubing. If samples are collected from the pump, decontaminate all tubing (including the tubing in the head) or change it between wells. Preserve (if required), label, and complete field notes. 2. Variable Speed Bladder Pump • If sampling for organics, the pump body must be constructed of stainless steel and the valves and bladder must be Teflon. All tubing must be Teflon, polyethylene, or PP and any cabling must be sealed in Teflon, polyethylene or PP, or made of stainless steel. • After purging to a smooth even flow, reduce the flow rate. • When sampling for volatile organic compounds, reduce the flow rate to 100-200mL/minute, if possible. 3. Variable Speed Submersible Pump • The housing must be stainless steel. • If sampling for organics, the internal impellers, seals and gaskets must be constructed of stainless steel, Teflon, polyethylene or PP. The delivery tubing must be Teflon, polyethylene or PP; the electrical cord must be sealed in Teflon; any cabling must be sealed in Teflon or constructed of stainless steel. • After purging to a smooth even flow, reduce the flow rate. • When sampling for volatile organic compounds, reduce the flow rate to 100-200mL/minute, if possible. b.) Sampling with Bailers - A high degree of skill and coordination are necessary to collect representative samples with a bailer. 1. General Considerations • Minimize handling of bailer as much as possible. • Wear sampling gloves. • Remove bailer from protective wrapping just before use. • Attach a lanyard of appropriate material. • Use the lanyard to move and position the bailers. • Do not allow bailer or lanyard to touch the ground. • If bailer is certified precleaned, no rinsing is necessary. • If both a pump and a bailer are to be used to collect samples, rinse the exterior and interior of the bailer with sample water from the pump before removing the pump. • If the purge pump is not appropriate for collecting samples (e.g., non-inert components), rinse the bailer by collecting a single bailer of the groundwater to be sampled. • Discard the water appropriately. Rev 4-08 28 • Do not rinse the bailer if Oil and Grease samples are to be collected. 2. Bailing Technique • Collect all samples that are required to be collected with a pump before collecting samples with the bailer. • Raise and lower the bailer gently to minimize stirring up particulate matter in the well and the water column, which can increase sample turbidity. • Lower the bailer carefully into the well to a depth approximately a foot above the water column. When the bailer is in position, lower the bailer into the water column at a rate of 2 cm/sec until the desired depth is reached. • Do not lower the top of the bailer more than one foot below the top of the water table, so that water is removed from the top of the water column. • Allow time for the bailer to fill with aquifer water as it descends into the water column. • Do not allow the bailer to touch the bottom of the well or particulate matter will be incorporated into the sample. Carefully raise the bailer. Retrieve the bailer at the same rate of 2 cm/sec until the bottom of the bailer has cleared to top of the water column. • Lower the bailer to approximately the same depth each time. • Collect the sample. Install a device to control the flow from the bottom of the bailer and discard the first few inches of water. Fill the appropriate sample containers by allowing the sample to slowly flow down the side of the container. Discard the last few inches of water in the bailer. • Repeat steps for additional samples. • As a final step measure the DO, pH, temperature, turbidity and specific conductance after the final sample has been collected. Record all measurements and note the time that sampling was completed. c.) Sampling Low Permeability Aquifers or Wells that have Purged Dry 1. Collect the sample(s) after the well has been purged. Minimize the amount of water removed from the well by using the same pump to purge and collect the sample. If the well has purged dry, collect samples as soon as sufficient sample water is available. 2. Measure the five field parameters temperature, pH, specific conductance, dissolved oxygen and turbidity at the time of sample collection. 3. Advise the analytical laboratory and the client that the usual amount of sample for analysis may not be available. Rev 4-08 29 Appendix D - Collecting Samples from Wells with Plumbing in Place In-place plumbing is generally considered permanent equipment routinely used for purposes other than purging and sampling, such as for water supply. a.) Air Strippers or Remedial Systems - These types of systems are installed as remediation devices. Collect influent and effluent samples from air stripping units as described below. 1. Remove any tubing from the sampling port and flush for one to two minutes. 2. Remove all hoses, aerators and filters (if possible). 3. Open the spigot and purge sufficient volume to flush the spigot and lines and until the purging completion criteria have been met. 4. Reduce the flow rate to approximately 500 mL/minute (a 1/8” stream) or approximately 0.1 gal/minute before collecting samples. 5. Follow procedures for collecting samples from water supply wells as outlined below. b.) Water Supply Wells – Water supply wells with in-place plumbing do not require equipment to be brought to the well to purge and sample. Water supply wells at UST facilities must be sampled for volatile organic compounds (VOCs) and semivolatile compounds (SVOCs). 1. Procedures for Sampling Water Supply Wells • Label sample containers prior to sample collection. • Prepare the storage and transport containers (ice chest, etc.) before taking any samples so each collected sample can be placed in a chilled environment immediately after collection. • You must choose the tap closest to the well, preferably at the wellhead. The tap must be before any holding or pressurization tank, water softener, ion exchange, disinfection process or before the water line enters the residence, office or building. If no tap fits the above conditions, a new tap that does must be installed. • The well pump must not be lubricated with oil, as that may contaminate the samples. • The sampling tap must be protected from exterior contamination associated with being too close to a sink bottom or to the ground. If the tap is too close to the ground for direct collection into the appropriate container, it is acceptable to use a smaller (clean) container to transfer the sample to a larger container. • Leaking taps that allow water to discharge from around the valve stem handle and down the outside of the faucet, or taps in which water tends to run up on the outside of the lip, are to be avoided as sampling locations. Rev 4-08 30 • Disconnect any hoses, filters, or aerators attached to the tap before sampling. • Do not sample from a tap close to a gas pump. The gas fumes could contaminate the sample. 2. Collecting Volatile Organic Samples • Equipment Needed: VOC sample vials [40 milliliters, glass, may contain 3 to 4 drops of hydrochloric acid (HCl) as preservative]; Disposable gloves and protective goggles; Ice chest/cooler; Ice; Packing materials (sealable plastic bags, bubble wrap, etc.); and Lab forms. • Sampling Procedure: Run water from the well for at least 15 minutes. If the well is deep, run water longer (purging three well volumes is best). If tap or spigot is located directly before a holding tank, open a tap after the holding tank to prevent any backflow into the tap where you will take your sample. This will ensure that the water you collect is “fresh” from the well and not from the holding tank. After running the water for at least 15 minutes, reduce the flow of water. The flow should be reduced to a trickle but not so slow that it begins to drip. A smooth flow of water will make collection easier and more accurate. Remove the cap of a VOC vial and hold the vial under the stream of water to fill it. Be careful not to spill any acid that is in the vial. For best results use a low flow of water and angle the vial slightly so that the water runs down the inside of the vial. This will help keep the sample from being agitated, aerated or splashed out of the vial. It will also increase the accuracy of the sample. As the vial fills and is almost full, turn the vial until it is straight up and down so the water won’t spill out. Fill the vial until the water is just about to spill over the lip of the vial. The surface of the water sample should become mounded. It is a good idea not to overfill the vial, especially if an acid preservative is present in the vial. Carefully replace and screw the cap onto the vial. Some water may overflow as the cap is put on. After the cap is secure, turn the vial upside down and gently tap the vial to see if any bubbles are present. If bubbles are present in the vial, remove the cap, add more water and check again to see if bubbles are present. Repeat as necessary. After two samples without bubbles have been collected, the samples should be labeled and prepared for shipment. Store samples at 4° C. Rev 4-08 31 3. Collecting Extractable Organic and/or Metals Samples • Equipment Needed: SVOC sample bottle [1 liter, amber glass] and/or Metals sample bottle [0.5 liter, polyethylene or glass, 5 milliliters of nitric acid (HNO3) preservative]; Disposable gloves and protective goggles; Ice Chest/Cooler; Ice; Packing materials (sealable plastic bags, bubble wrap, etc.); and Lab forms. • Sampling Procedure: Run water from the well for at least 15 minutes. If the well is deep, run the water longer (purging three well volumes is best). If tap or spigot is located directly before a holding tank, open a tap after the holding tank to prevent any backflow into the tap where you will take your sample. This will ensure that the water you collect is “fresh” from the well and not from the holding tank. After running the water for at least 15 minutes, reduce the flow. Low water flow makes collection easier and more accurate. Remove the cap of a SVOC or metals bottle and hold it under the stream of water to fill it. The bottle does not have to be completely filled (i.e., you can leave an inch or so of headspace in the bottle). After filling, screw on the cap, label the bottle and prepare for shipment. Store samples at 4° C. Rev 4-08 32 Appendix E - Collecting Surface Water Samples The following topics include 1.) acceptable equipment selection and equipment construction materials and 2.) standard grab, depth-specific and depth-composited surface water sampling techniques. Facilities which contain or border small rivers, streams or branches should include surface water sampling as part of the monitoring program for each sampling event. A simple procedure for selecting surface water monitoring sites is to locate a point on a stream where drainage leaves the site. This provides detection of contamination through, and possibly downstream of, site via discharge of surface waters. The sampling points selected should be downstream from any waste areas. An upstream sample should be obtained in order to determine water quality upstream of the influence of the site. a.) General Cautions 1. When using watercraft take samples near the bow away and upwind from any gasoline outboard engine. Orient watercraft so that bow is positioned in the upstream direction. 2. When wading, collect samples upstream from the body. Avoid disturbing sediments in the immediate area of sample collection. 3. Collect water samples prior to taking sediment samples when obtaining both from the same area (site). 4. Unless dictated by permit, program or order, sampling at or near man- made structures (e.g., dams, weirs or bridges) may not provide representative data because of unnatural flow patterns. 5. Collect surface water samples from downstream towards upstream. b.) Equipment and Supplies - Select equipment based on the analytes of interest, specific use, and availability. c.) Surface Water Sampling Techniques - Adhere to all general protocols applicable to aqueous sampling when following the surface water sampling procedures addressed below. 1. Manual Sampling: Use manual sampling for collecting grab samples for immediate in-situ field analyses. Use manual sampling in lieu of automatic equipment over extended periods of time for composite sampling, especially when it is necessary to observe and/or note unusual conditions. • Surface Grab Samples - Do not use sample containers containing premeasured amounts of preservatives to collect grab samples. If the sample matrix is homogeneous, then the grab method is a simple and effective technique for collection purposes. If homogeneity is not apparent, based on flow or vertical variations (and should never be assumed), then use other collection protocols. Where practical, use the actual sample container submitted to the laboratory for collecting samples to be analyzed for oil and grease, volatile organic compounds (VOCs), and microbiological samples. This procedure eliminates the possibility of contaminating the sample with an intermediate collection container. The use of Rev 4-08 33 unpreserved sample containers as direct grab samplers is encouraged since the same container can be submitted for laboratory analysis after appropriate preservation. This procedure reduces sample handling and eliminates potential contamination from other sources (e.g., additional sampling equipment, environment, etc.). 1. Grab directly into sample container. 2. Slowly submerge the container, opening neck first, into the water. 3. Invert the bottle so the neck is upright and pointing towards the direction of water flow (if applicable). Allow water to run slowly into the container until filled. 4. Return the filled container quickly to the surface. 5. Pour out a few mL of sample away from and downstream of the sampling location. This procedure allows for the addition of preservatives and sample expansion. Do not use this step for volatile organics or other analytes where headspace is not allowed in the sample container. 6. Add preservatives, securely cap container, label, and complete field notes. If sample containers are attached to a pole via a clamp, submerge the container and follow steps 3 – 5 but omit steps 1 and 2. • Sampling with an Intermediate Vessel or Container: If the sample cannot be collected directly into the sample container to be submitted to the laboratory, or if the laboratory provides prepreserved sample containers, use an unpreserved sample container or an intermediate vessel (e.g., beakers, buckets or dippers) to obtain the sample. These vessels must be constructed appropriately, including any poles or extension arms used to access the sample location. 1. Rinse the intermediate vessel with ample amounts of site water prior to collecting the first sample. 2. Collect the sample as outlined above using the intermediate vessel. 3. Use pole mounted containers of appropriate construction to sample at distances away from shore, boat, etc. Follow the protocols above to collect samples. • Peristaltic Pump and Tubing: The most portable pump for this technique is a 12 volt peristaltic pump. Use appropriately precleaned, silastic tubing in the pump head and attach polyethylene, Tygon, etc. tubing to the pump. This technique is not acceptable for Oil and Grease, EPH, VPH or VOCs. Extractable organics can be collected through the pump if flexible interior-wall Teflon, polyethylene or PP tubing is used in the pump head or if used with the organic trap setup. Rev 4-08 34 1. Lower appropriately precleaned tubing to a depth of 6 – 12 inches below water surface, where possible. 2. Pump 3 – 5 tube volumes through the system to acclimate the tubing before collecting the first sample. 3. Fill individual sample bottles via the discharge tubing. Be careful not to remove the inlet tubing from the water. 4. Add preservatives, securely cap container, label, and complete field notes. • Mid-Depth Grab Samples: Mid-depth samples or samples taken at a specific depth can approximate the conditions throughout the entire water column. The equipment that may be used for this type of sampling consists of the following depth-specific sampling devices: Kemmerer, Niskin, Van Dorn type, etc. You may also use pumps with tubing or double check-valve bailers. Certain construction material details may preclude its use for certain analytes. Many Kemmerer samplers are constructed of plastic and rubber that preclude their use for all volatile and extractable organic sampling. Some newer devices are constructed of stainless steel or are all Teflon or Teflon-coated. These are acceptable for all analyte groups without restriction. 1. Measure the water column to determine maximum depth and sampling depth prior to lowering the sampling device. 2. Mark the line attached to the sampler with depth increments so that the sampling depth can be accurately recorded. 3. Lower the sampler slowly to the appropriate sampling depth, taking care not to disturb the sediments. 4. At the desired depth, send the messenger weight down to trip the closure mechanism. 5. Retrieve the sampler slowly. 6. Rinse the sampling device with ample amounts of site water prior to collecting the first sample. Discard rinsate away from and downstream of the sampling location. 7. Fill the individual sample bottles via the discharge tube. • Double Check-Valve Bailers: Collect samples using double check- valve bailers if the data requirements do not necessitate a sample from a strictly discrete interval of the water column. Bailers with an upper and lower check-valve can be lowered through the water column. Water will continually be displaced through the bailer until the desired depth is reached, at which point the bailer is retrieved. Sampling with this type of bailer must follow the same protocols outlined above, except that a messenger weight is not applicable. Although not designed specifically for this kind of sampling, a bailer is acceptable when a mid-depth sample is required Rev 4-08 35 1. As the bailer is dropped through the water column, water is displaced through the body of the bailer. The degree of displacement depends upon the check-valve ball movement to allow water to flow freely through the bailer body. 2. Slowly lower the bailer to the appropriate depth. Upon retrieval, the two check valves seat, preventing water from escaping or entering the bailer. 3. Rinse the sampling device with ample amounts of site water prior to collecting the first sample. 4. Fill the individual sample bottles via the discharge tube. Sample bottles must be handled as described above. • Peristaltic Pump and Tubing: The most portable pump for this technique is a 12 volt peristaltic pump. Use appropriately precleaned, silastic tubing in the pump head and attach HDPE, Tygon, etc. tubing to the pump. This technique is not acceptable for Oil and Grease, EPH, VPH or VOCs. Extractable organics can be collected through the pump if flexible interior-wall Teflon, polyethylene or PP tubing is used in the pump head, or if used with an organic trap setup. 1. Measure the water column to determine the maximum depth and the sampling depth. 2. Tubing will need to be tied to a stiff pole or be weighted down so the tubing placement will be secure. Do not use a lead weight. Any dense, non-contaminating, non- interfering material will work (brick, stainless steel weight, etc.). Tie the weight with a lanyard (braided or monofilament nylon, etc.) so that it is located below the inlet of the tubing. 3. Turn the pump on and allow several tubing volumes of water to be discharged before collecting the first sample. 4. Fill the individual sample bottles via the discharge tube. Sample bottles must be handled as described above. Rev 4-08 36 ATTACHMENT D NCDEQ SOLID WASTE SECTION MONITORING REPORT MEMOS AND FORMS DENR USE ONLY: Paper Report Electronic Data - Email CD (data loaded: Yes / No ) NC DENR Doc/Event #: Environmental Monitoring Division of Waste Management - Solid Waste Reporting Form Notice: This form and any information attached to it are "Public Records" as defined in NC General Statute 132-1. As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6). Instructions: • Prepare one form for each individually monitored unit. • Please type or print legibly. • Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 2B surface water standards. The notification must include a preliminary analysis of the cause and significance of each value. (e.g. naturally occurring, off-site source, pre-existing condition, etc.). • Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits. • Attach a notification table of any methane gas values that attain or exceed explosive gas levels. This includes any structures on or nearby the facility (NCAC 13B .1629 (4)(a)(i). • Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDENR-DWM, Solid Waste Section, 1646 Mail Service Center, Raleigh, NC 27699-1646. Solid Waste Monitoring Data Submittal Information Name of entity submitting data (laboratory, consultant, facility owner): Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address: Name: Phone: E-mail: Facility name: Facility Address: Facility Permit # NC Landfill Rule: (.0500 or .1600) Actual sampling dates (e.g., October 20-24, 2006) Environmental Status: (Check all that apply) Initial/Background Monitoring Detection Monitoring Assessment Monitoring Corrective Action Type of data submitted: (Check all that apply) Notification attached? No. No groundwater or surface water standards were exceeded. Yes, a notification of values exceeding a groundwater or surface water standard is attached. It includes a list of groundwater and surface water monitoring points, dates, analytical values, NC 2L groundwater standard, NC 2B surface water standard or NC Solid Waste GWPS and preliminary analysis of the cause and significance of any concentration. Yes, a notification of values exceeding an explosive methane gas limit is attached. It includes the methane monitoring points, dates, sample values and explosive methane gas limits. Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct. Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment. Facility Representative Name (Print) Title (Area Code) Telephone Number Affix NC Licensed/ Professional Geologist Seal Signature Date Facility Representative Address NC PE Firm License Number (if applicable effective May 1, 2009) Revised 6/2009 Groundwater monitoring data from monitoring wells Groundwater monitoring data from private water supply wells Leachate monitoring data Surface water monitoring data Methane gas monitoring data Corrective action data (specify) Other(specify) 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 1 North Carolina Department of Environment and Natural Resources October 16, 2007 EMORANDUM Dexter R. Matthews, Director Division of Wa e Management st Michael F. Easley, Governor William G. Ross Jr., Secretary M To: Operators, North Carolina Certified Laboratories, and Consultants rom: North Carolina Division of Waste Management, Solid Waste Section Re: ring Data for North Carolina Solid Waste Management Facilities and provide a reminder of formats for environmental monitoring data bmittals. ese changes was to improve the protection of public health and the nvironment. reported to the North Carolina Solid Waste Section. The PQLs will no nger be used. ted can be directed to the North Carolina Department of Health nd Human Services. Solid Waste Directors, Landfill F Environmental Monito The purpose of this memorandum is to provide a reiteration of the use of the Solid Waste Section Limits (SWSLs), provide new information on the Groundwater Protection Standards, su The updated guidelines are in large part due to questions and concerns from laboratories, consultants, and the regulated community regarding the detection of constituents in groundwater at levels below the previous Practical Quantitation Limits (PQLs). The North Carolina Solid Waste Section solicited feedback from the regulated community, and, in conjunction with the regulated community, developed new limits. The primary purpose of th e Data must be reported to the laboratory specific method detection limits and must be quantifiable at or below the SWSLs. The SWSLs must be used for both groundwater and surface water data lo In June 2007, we received new information regarding changes to the Groundwater Protection Standards. If a North Carolina 2L Groundwater Standard does not exist, then a designated Groundwater Protection Standard is used pursuant to 15A NCAC 13B .1634. Toxicologists with the North Carolina Department of Health and Human Services calculated these new Groundwater Protection Standards. Questions regarding how the standards were calcula a 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 2 every year or sooner if new scientific and toxicological data become available. lease review our website periodically for any changes to the 2L NC Standards, ic updates will be noted on our ebsite. wastenotnc.org/sw/swenvmonitoringlist.asp We have reviewed the new results from the North Carolina Department of Public Health and have updated our webpage accordingly. The list of Groundwater Protection Standards, North Carolina 2L Standards and SWSLs are subject to change and will be reviewed P Groundwater Protection Standards, or SWSLs. Specif w http://www. ental monitoring data In addition, the following should be included with environm submittals: 1. Environmental Monitoring Data Form as a cover sheet: http://www.wastenotnc.org/swhome/EnvMonitoring/NCEnvMonRptForm.pdf 2. Copy of original laboratory results. 3. Table of detections and discussion of 2L exceedances. 4. Electronic files on CD or sent by email. These files should include the written report as Portable Document Format (PDF) file and the laboratory data as an excel file following a the format of the updated Electronic Data Deliverable (EDD) template on our website: http://www.wastenotnc.org/swhome/enviro_monitoring.asp If you have any questions or concerns, please feel free to contact Donald Herndon (919- 08-8502), Ervin Lane (919-508-8520) or Jaclynne Drummond (919-508-8500). Thank you for your continued cooperation with these matters. 5 North Carolina Department of Environment and Natural Resources Dexter R. Matthews, Director Division of Waste Management Michael F. Easley, Governor William G. Ross Jr., Secretary 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone: 919-508-8400 \ FAX: 919-733-4810 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper October 27, 2006 To: SW Director/County Manager/Consultant/Laboratory From: NC DENR-DWM, Solid Waste Section Re: New Guidelines for Electronic Submittal of Environmental Monitoring Data The Solid Waste Section receives and reviews a wide variety of environmental monitoring data from permitted solid waste management facilities, including the results from groundwater and surface water analyses, leachate samples, methane gas readings, potentiometric measurements, and corrective action data. We are in the process of developing a database to capture the large volume of data submitted by facilities. To maintain the integrity of the database, it is critical that facilities, consultants, and laboratories work with the Solid Waste Section to ensure that environmental samples are collected and analyzed properly with the resulting data transferred to the Solid Waste Section in an accurate manner. In order to better serve the public and to expedite our review process, the Solid Waste Section is requesting specific formatting for environmental monitoring data submittals for all solid waste management facilities. Effective, December 1, 2006, please submit a Solid Waste Environmental Monitoring Data Form in addition to your environmental monitoring data report. This form will be sent in lieu of your current cover letter to the Solid Waste Section. The Solid Waste Environmental Monitoring Data Form must be filled out completely, signed, and stamped with a Board Certified North Carolina Geologist License Seal. The solid waste environmental monitoring data form will include the following: 1. Contact Information 2. Facility Name 3. Facility Permit Number 4. Facility Address 5. Monitoring Event Date (MM/DD/YYYY) 6. Water Quality Status: Monitoring, Detection Monitoring, or Assessment Monitoring 7. Type of Data Submitted: Groundwater Monitoring Wells, Groundwater Potable Wells, Leachate, Methane Gas, or Corrective Action Data 8. Notification of Exceedance of Groundwater, Surface Water, or Methane Gas (in table form) 9. Signature 10. North Carolina Geologist Seal Page 2 of 2 Most of these criteria are already being included or can be added with little effort. The Solid Waste Environmental Monitoring Data Form can be downloaded from our website: http://www.wastenotnc.org/swhome/enviro_monitoring.asp. The Solid Waste Section is also requesting a new format for monitoring wells, potable wells, surface water sampling locations, and methane probes. This format is essential in the development and maintenance of the database. The Solid Waste Section is requesting that each sampling location at all North Carolina solid waste management facilities have its own unique identification number. We are simply asking for the permit number to be placed directly in front of the sampling location number (example: 9901-MW1 = Permit Number 99-01 and Monitoring Well MW-1). No changes will need to be made to the well tags, etc. This unique identification system will enable us to accurately report data not only to NCDENR, but to the public as well. We understand that this new identification system will take some time to implement, but we feel that this will be beneficial to everyone involved in the long term. Additionally, effective December 1, 2006, the Practical Quantitation Limits (PQLs) established in 1994 will change. The Solid Waste Section is requiring that all solid waste management facilities use the new Solid Waste Reporting Limits (SWRL) for all groundwater analyses by a North Carolina Certified Laboratory. Laboratories must also report any detection of a constituent even it is detected below the new SWRL (e.g., J values where the constituent was detected above the detection limit, but below the quantitation limit). PQLs are technology-based analytical levels that are considered achievable using the referenced analytical method. The PQL is considered the lowest concentration of a contaminant that the lab can accurately detect and quantify. PQLs provided consistency and available numbers that were achievable by the given analytical method. However, PQLs are not health-based, and analytical instruments have improved over the years resulting in lower achievable PQLs for many of the constituents. As a result, the Solid Waste Section has established the SWRLs as the new reporting limits eliminating the use of the PQLs. We would also like to take this opportunity to encourage electronic submittal of the reports. This option is intended to save resources for both the public and private sectors. The Solid Waste Section will accept the entire report including narrative text, figures, tables, and maps on CD-ROM. The CD-ROM submittal shall contain a CD-ROM case and both CD-ROM and the case shall be labeled with the site name, site address, permit number, and the monitoring event date (MM/DD/YYYY). The files may be a .pdf, .txt, .csv, .xls, or .doc type. Also, analytical lab data should be reported in an .xls file. We have a template for analytical lab data available on the web at the address listed above. If you have any questions or concerns, please call (919) 508-8400. Thank you for your anticipated cooperation in this matter. 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 1 North Carolina Department of Environment and Natural Resources Dexter R. Matthews, Director Division of Waste Management Michael F. Easley, Governor William G. Ross Jr., Secretary February 23, 2007 EMORANDUM M o: Solid Waste Directors, Landfill Operators, North Carolina Certified Laboratories, and Consultants rom: North Carolina Division of Waste Management, Solid Waste Section Re: ste Section Memorandum Regarding New Guidelines for Electronic Submittal of Environmental Data. arolina Solid Waste Section memo titled, “New Guidelines for Electronic Submittal of Environmental Data.” adily available laboratory analytical methodology and current health-based groundwater protection standards. efinitions T F Addendum to October 27, 2006, North Carolina Solid Wa The purpose of this addendum memorandum is to provide further clarification to the October 27, 2006, North C The updated guidelines is in large part due to questions and concerns from laboratories, consultants, and the regulated community regarding the detection of constituents in groundwater at levels below the previous practical quantitation limits (PQLs). The North Carolina Solid Waste Section solicited feedback from the regulated community, and, in conjunction with the regulated community, developed new limits. The primary purpose of these changes was to improve the protection of public health and the environment. The North Carolina Solid Waste Section is concerned about analytical data at these low levels because the earliest possible detection of toxic or potentially carcinogenic chemicals in the environment is paramount in the North Carolina Solid Waste Section’s mission to protect human health and the environment. Low level analytical data are critical for making the correct choices when designing site remediation strategies, alerting the public to health threats, and protecting the environment from toxic contaminants. The revised limits were updated based on re D s are also an attempt to clarify the meaning of these rms as used by the North Carolina Solid Waste Section. e that can be measured and ported with 99% confidence that the analyte concentration is greater than zero. is the minimum concentration of a target analyte that can be accurately determined by the referenced method. Many definitions relating to detection limits and quantitation limits are used in the literature and by government agencies, and commonly accepted procedures for calculating these limits exist. Except for the Solid Waste Section Limit and the North Carolina 2L Standards, the definitions listed below are referenced from the Environmental Protection Agency (EPA). The definition te Method Detection Limit (MDL) is the minimum concentration of a substanc re Method Reporting Limit or Method Quantitation Limit (MRL or MQL) Practical Quantitation Limit (PQL) is a quantitation limit that represents a practical and routinely achievable quantitation limit with a high degree of certainty (>99.9% confidence) in the results. Per EPA Publication Number SW-846, the PQL is the lowest concentration that can be reliably measured within specified limits of precision and accuracy for a specific laboratory analytical method during routine laboratory operating conditions in accordance with "Test Methods for Evaluating Solid Wastes, Physical/Chemical Methods. The PQL appears in 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 2 older NCDENR literature; however, it is no longer being used by the North Carolina Solid aste Section. n. The nomenclature of the SWRL described in the October 7, 2006, memorandum has changed to the SWSL. C 2L .0200, Classifications and Water Quality Standards Applicable to the roundwaters of North Carolina. ethod Detection Limits (MDLs) W Solid Waste Section Limit (SWSL) is the lowest amount of analyte in a sample that can be quantitatively determined with suitable precision and accuracy. The SWSL is the concentration below which reported analytical results must be qualified as estimated. The SWSL is the updated version of the PQL that appears in older North Carolina Solid Waste Section literature. The SWSL is the limit established by the laboratory survey conducted by the North Carolina Solid Waste Sectio 2 North Carolina 2L Standards (2L) are water quality standards for the protection of groundwaters of North Carolina as specified in 15A NCA G M he North Carolina Solid Waste Section is now quiring laboratories to report to the method detection limit. atories generally report the highest method detection limit for all the instruments sed for a specific method. ata below unspecified or non-statistical reporting limits severely biases data sets and restricts their usefulness. olid Waste Section Limits (SWSLs) Clarification of detection limits referenced in the October 27, 2006, memorandum needed to be addressed because of concerns raised by the regulated community. T re Method detection limits are statistically determined values that define the concentration at which measurements of a substance by a specific analytical protocol can be distinguished from measurements of a blank (background noise). Method detection limits are matrix-specific and require a well defined analytical method. In the course of routine operations, labor u In many instances, the North Carolina Solid Waste Section gathers data from many sources prior to evaluating the data or making a compliance decision. Standardization in data reporting significantly enhances the ability to interpret and review data because the reporting formats are comparable. Reporting a method detection limit alerts data users of the known uncertainties and limitations associated with using the data. Data users must understand these limitations in order to minimize the risk of making poor environmental decisions. Censoring d S nd surface water data reported to the North Carolina Solid Waste ection. The PQLs will no longer be used. Due to comments from the regulated community, the North Carolina Solid Waste Section has changed the nomenclature of the new limits referenced on Page 2 of the October 27, 2006, memorandum, from the North Carolina Solid Waste Reporting Limits (SWRL) to the Solid Waste Section Limits (SWSL). Data must be reported to the laboratory specific method detection limits and must be quantifiable at or below the SWSL. The SWSLs must be used for both groundwater a S The North Carolina Solid Waste Section has considered further feedback from laboratories and the regulated community and ha 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 3 s made some additional changes to the values of the SWSLs. These changes may be viewed ttp://www.wastenotnc.org/sw/swenvmonitoringlist.asp nalytical Data Reporting Requirements on our webpage: h A al boratory method detection limit with all analytical laboratory results along with the following requirements: oncentration, compliance action may not be taken unless it is statistically significant crease over background. hese analytical results may require additional confirmation. he possibility that a constituent concentration may exceed the North Carolina 2L Standards in the ture. hese analytical results may be used for compliance without further confirmation. will be returned and deemed unacceptable. Submittal of unacceptable data may lead to lectronic Data Deliverable (EDD) Submittal The strategy for implementing the new analytical data reporting requirements involves reporting the actu la 1) Any analyte detected at a concentration greater than the MDL but less than the SWSL is known to be present, but the uncertainty in the value is higher than a value reported above the SWSL. As a result, the actual concentration is estimated. The estimated concentration is reported along with a qualifier (“J” flag) to alert data users that the result is between the MDL and the SWSL. Any analytical data below quantifiable levels should be examined closely to evaluate whether the analytical data should be included in any statistical analysis. A statistician should make this determination. If an analyte is detected below the North Carolina 2L Standards, even if it is a quantifiable c in T 2) Any analyte detected at a concentration greater than the SWSL is present, and the quantitated value can be reported with a high degree of confidence. These analytes are reported without estimated qualification. The laboratory’s MDL and SWSL must be included in the analytical laboratory report. Any reported concentration of an organic or inorganic constituent at or above the North Carolina 2L Standards will be used for compliance purposes, unless the inorganic constituent is not statistically significant). Exceedance of the North Carolina 2L Standards or a statistically significant increase over background concentrations define when a violation has occurred. Any reported concentration of an organic or inorganic constituent at or above the SWSL that is not above an North Carolina 2L Standard will be used as a tool to assess the integrity of the landfill system and predict t fu T Failure to comply with the requirements described in the October 27, 2006, memorandum and this addendum to the October 27, 2006, memorandum will constitute a violation of 15A NCAC 13B .0601, .0602, or .1632(b), and the analytical data enforcement action. E he analytical laboratory data. This option is intended to save resources r both the public and private sectors. The North Carolina Solid Waste Section would also like to take this opportunity to encourage electronic submittal of the reports in addition to t fo The North Carolina Solid Waste Section will accept the entire report including narrative text, figures, tables, and maps on CD-ROM. Please separate the figures and tables from the report when saving in order to keep the size of the files smaller. The CD-ROM submittal shall contain a CD-ROM case and both CD 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone 919-508-8400 \ FAX 919-715-3605 \ Internet http://wastenotnc.org An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper 4 -ROM and the ase shall be labeled with the site name, site address, permit number, and the monitoring event date ab data and field data. This template is available on our webpage: ttp://www.wastenotnc.org/swhome/enviro_monitoring.asp. Methane monitoring data may also be submitted ry or exceeds 25% of the LEL facility structures (excluding gas control or recovery system components), include the exceedance(s) on the you have any questions or concerns, please feel free to contact Jaclynne Drummond (919-508-8500) or Ervin Thank you for your continued cooperation with this matter. c (MM/DD/YYYY). The reporting files may be submitted as a .pdf, .txt, .csv, .xls,. or .doc type. Also, analytical lab data and field data should be reported in .xls files. The North Carolina Solid Waste Section has a template for analytical l h electronically in this format. Pursuant to the October 27, 2006, memorandum, please remember to submit a Solid Waste Section Environmental Monitoring Reporting Form in addition to your environmental monitoring data report. This form should be sealed by a geologist or engineer licensed in North Carolina if hydrogeologic or geologic calculations, maps, or interpretations are included with the report. Otherwise, any representative that the facility owner chooses may sign and submit the form. Also, if the concentration of methane generated by the facility exceeds 100% of the lower explosive limits (LEL) at the property bounda in North Carolina Solid Waste Section Environmental Monitoring Reporting Form. If Lane (919-508-8520). NC DEQ Division of Waste Management - Solid Waste 14- Day Notification of Groundwater Protection Standard Exceedance(s) per rule: 15A NCAC 13B .1633(c)(1) Notice: This form and any information attached to it are "Public Records" as defined in NC General Statute 132-1. As such, these documents are available for inspection and examination by any person upon request (NC General Statute 132-6). Instructions: • Prepare one form for each individually monitored unit. • Please type or print legibly. • Attach a notification table with values that attain or exceed applicable groundwater protection standards. • Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDEQ-DWM, Solid Waste Section, 1646 Mail Service Center, Raleigh, NC 27699-1646. Solid Waste Monitoring Data Submittal Information Name of entity submitting data (laboratory, consultant, facility owner): Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address: Name: Phone: E-mail: Facility name: Facility Address: Facility Permit # Actual sampling dates (e.g., October 20-24, 2006) Environmental Status: (Check all that apply) Initial/Background Monitoring Detection Monitoring Assessment Monitoring Corrective Action Additional Information: A notification of values exceeding a groundwater protection standard as defined in 15A NCAC 13B .1634(g)(h) is attached. It includes a list of groundwater monitoring points, dates, analytical values, NC 2L groundwater standard, NC Solid Waste GWPS and preliminary analysis of the cause and significance of any concentration. A re-sampling event was conducted to confirm the exceedances. Alternate Source Demonstration(s) have been approved for the following constituents with report date: Certification To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct. Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment. Facility Representative Name (Print) Title (Area Code) Telephone Number Affix NC Licensed/Professional Geologist or Professional Engineer Seal Signature Date Facility Representative Address NC PG/PE Firm License Number (if applicable effective May 1, 2009) Revised 6/2016 March 23, 2017 MEMORANDUM To: Solid Waste Directors, Public Works Directors, Landfill Operators, and Landfill Owners From: Solid Waste Section Re: Permanent and Temporary Groundwater and Landfill Gas Monitoring Wells, Piezometers, and Probes Based on field observations by Solid Waste Section staff, we continue to observe routine maintenance issues of monitoring wells at both active and closed landfills. Examples of these issues include: Sediment accumulation around the base of the steel outer casing which restricts visual inspection of the concrete pad, Improper monitor well identification, Unsecured outer steel casings and/or well caps, and No outer steel casings and/or well caps. The Solid Waste Section is continuing its efforts to improve consistency throughout the State and is therefore issuing this Memorandum as a reminder of the requirements of 15A NCAC 2C. The purpose of rule set 15A NCAC 2C Well Construction Standards is to be consistent with the duty to safeguard public welfare, safety, and health, and to protect and beneficially develop the groundwater resources of the state by requiring that the location, construction, repair and abandonment of wells, and the installation of pumps and pumping equipment conform to reasonable standards and requirements as may be necessary to protect public welfare, safety, health, and groundwater resources. The requirements in 15A NCAC 02C .0108 – Standards of Construction: Wells Other Than Water Supply are applicable to permanent and temporary groundwater and landfill gas monitoring wells, piezometers, and probes. 15A NCAC 02C .0108(g) The well shall be constructed in such a manner that water or contaminants from the land surface cannot migrate along the borehole annulus into any packing material or well screen area. 15A NCAC 02C .0108(k) All non-water supply wells, including temporary wells, shall be secured with a locking well cap to ensure against unauthorized access and use. 15A NCAC 02C .0108(l) All non-water supply wells shall be equipped with a steel outer well casing or flush-mount cover, set in concrete, and other measures sufficient to protect the well from damage by normal site activities. 15A NCAC 02C .0108(o) Each non-water supply well shall have permanently affixed an identification plate. The identification plate shall be constructed of a durable, waterproof, rustproof metal or other material approved by the Department as equivalent and shall contain the following information: (1) well contractor name and certification number; (2) date well completed; (3) total depth of well; (4) a warning that the well is not for water supply and that the groundwater may contain hazardous materials; (5) depth(s) to the top(s) and bottom(s) of the screen(s); and (6) the well identification number or name assigned by the well owner. 15A NCAC 02C .0108(s) Temporary wells and all other non-water supply wells shall be constructed in such a manner as to preclude the vertical migration of contaminants within and along the borehole channel. Landfill facility staff should be aware of the above requirements and demonstrate that monitoring wells are being maintained to those requirements during facility inspections. Please take this time to review your monitoring network for compliance with the 2C Standards. Future violations of the above requirements may result in tiered enforcement action by the Section. If you have any questions or concerns regarding this Memorandum, please feel free to contact the Solid Waste Section Hydrogeologist overseeing your facility. The Solid Waste Section greatly appreciates your assistance on this matter. Working together, we can continue to provide excellent customer service to you and to the public. Jackie Drummond, Asheville Regional Office, 828-296-4706, jaclynne.drummond@ncdenr.gov Ervin Lane, Raleigh Central Office, 919-707-8288, ervin.lane@ncdenr.gov Elizabeth Werner, Raleigh Central Office, 919-707-8253, elizabeth.werner@ncdenr.gov Christine Ritter, Raleigh Central Office, 919-707-8254, christine.ritter@ncdenr.gov Perry Sugg, Raleigh Central Office, 919-707-8258, perry.sugg@ncdenr.gov North Carolina Department of Environment and Natural Resources Dexter Matthews, Director Division of Waste Management Beverly Eaves Perdue, Governor Dee Freeman, Secretary 1646 Mail Service Center, Raleigh, North Carolina 27699-1646 Phone: 919-508-8400 \ FAX: 919-715-4061 \ Internet: www.wastenotnc.org An Equal Opportunity / Affirmative Action Employer - 50 % Recycled \ 10 % Post Consumer Paper June 25, 2010 MEMORANDUM To: Solid Waste Directors, Landfill Owners/Operators, and North Carolina Certified Laboratories From: North Carolina Division of Waste Management, Solid Waste Section Re: Tetrahydrofuran Analysis at Construction and Demolition Landfills Based upon historical sampling results, health and environmental concerns, and an ongoing EPA evaluation of tetrahydrofuran (THF), the Solid Waste Section (Section) is requiring, in accordance with 15A NCAC 13B .0601, that Construction and Demolition Landfills (CDLFs) begin analyzing ground and surface water samples collected after January 1, 2011 for THF. The purpose of this memorandum is to inform CDLF owners and operators and laboratories that are involved in the collection or analysis of environmental samples of this requirement. Although the North Carolina Occupational and Environmental Epidemiology Branch previously established a health based standard for THF, there are currently no established Maximum Contaminant Levels or 15A NCAC 02L .0202 Standards due to the lack of historical toxicological data necessary to promulgate regulatory standards. However, THF analysis is currently required at CDLFs located in several states throughout the U.S. and has been shown to be a constituent of concern in groundwater at CDLFs for several years. In addition, THF has been documented as a contaminant associated with CDLF leachate. Due to the potential health hazards associated with THF and its documented presence at CDLFs, the Section has determined that CDLFs should begin analyzing ground and surface water samples for THF to ensure protection of human health and the environment. Although regulatory standards have not yet been established for THF, its presence in groundwater must be determined in order to accurately assess the risks at each CDLF and determine if regulatory standards need to be established. The Section will reevaluate monitoring requirements for THF in the future after enough data has been collected to determine the extent of THF at C&D facilities. Laboratories are advised to contact the Division of Water Quality-Laboratory Section- Certification Branch prior to initiating THF analysis using Method 8260. If you have any questions or concerns, please feel free to contact Jaclynne Drummond (919-508- 8500) or Ervin Lane (919-508-8516). Thank you for your continued cooperation with this matter. LANDFILL GAS MONITORING PLAN GREENWAY WASTE SOLUTIONS OF HARRISBURG, LLC (FORMER HIGHWAY 49 C&D LANDFILL) 2105 SPEEDRAIL COURT HARRISBURG, NORTH CAROLINA SOLID WASTE FACILITY PERMIT NUMBER 13-06 Prepared For: GREENWAY WASTE SOLUTIONS OF HARRISBURG, LLC 19109 W. CATAWBA AVENUE, SUITE 200 CORNELIUS, NORTH CAROLINA 28031 Prepared By: CIVIL & ENVIRONMENTAL CONSULTANTS, INC. 1900 CENTER PARK DRIVE, SUITE A CHARLOTTE NORTH CAROLINA 28217 CEC Project No. 111-370.0002 Updated August 16, 2017 Edward H. Stephens, P.G. Scott L. Brown. P.E. Project Manager Vice President -i- Hwy. 49 Methane Monitoring Plan August 16, 2017 TABLE OF CONTENTS 1.0 INTRODUCTION..............................................................................................................1 1.1 Background ............................................................................................................. 1 1.2 Site Geology/Hydrogeology ................................................................................... 1 1.3 LFG Generation and Migration .............................................................................. 2 1.4 LFG Composition ................................................................................................... 2 2.0 LANDFILL GAS MONITORING ...................................................................................4 2.1 LFG Monitoring Well Network - Phase I/II Area .................................................. 4 2.2 LFG Monitoring Well Network - Phase I Expansion Area .................................... 4 2.3 LFG Monitoring Well Construction ....................................................................... 4 2.4 LFG Monitoring Procedures ................................................................................... 5 2.5 LFG Response Procedures ...................................................................................... 5 3.0 PROFESSIONAL CERTIFICATION .............................................................................7 ATTACHMENTS Attachment A - Seasonal High Water Table Potentiometric Map Attachment B - Landfill Gas Monitoring Location Map Attachment C - NCDEQ Solid Waste Section Landfill Gas Monitoring Guidance Attachment D - NCDEQ Solid Waste Section Landfill Gas Monitoring Form -1- Landfill Gas Monitoring Plan August 16, 2017 1.0 INTRODUCTION 1.1 BACKGROUND North Carolina Solid Waste Management Rules 15A NCAC 13B require quarterly monitoring of methane and other explosive landfill gases (LFG) at C&D landfills to ensure that landfill gas does not exceed the lower explosive limit (LEL) at the facility property boundary or 25 percent of the LEL in facility structures. An LFG monitoring plan is necessary to ensure that these performance standards are met at the facility. The Greenway Waste Solutions of Harrisburg, LLC (formerly Highway 49 C&D Landfill) facility maintains a current methane monitoring program that is implemented in accordance with the Methane Monitoring Plan (revised December 2009) prepared by Enviro-Pro, P.C. Two landfill areas referred to as the active Phase I/II Area and the currently unused Phase I Expansion Area are addressed in the facility’s LFG monitoring program. Civil & Environmental Consultants, Inc. (CEC) has prepared this update to the above referenced plan as part of a 2017 permit modification for the subject facility. 1.2 SITE GEOLOGY/HYDROGEOLOGY The geology underlying the site is a composite regolith-fractured crystalline rock (predominantly granodiorite and/or granite composition) system that is typical of the NC Piedmont. Locally, the regolith is characterized by residual sandy silt soils from the surface to approximately 10 feet below grade, and then silty sand saprolite and partially weathered rock (PWR) to depths of 25 to 40 feet below grade. Unweathered fractured bedrock generally occurs at depths ranging from 25 to 40 below grade. Local groundwater flow is primarily in the regolith zone with flow also occurring in the fractured or weathered zones in bedrock. Depths to the water table range from approximately 36 feet below ground surface (bgs) at the south perimeters of the landfill areas to 5-10 feet bgs along the north perimeters. The local water table is unconfined and is encountered in the bedrock in the -2- Landfill Gas Monitoring Plan August 16, 2017 more elevated site areas and in the regolith in lower site areas. The regolith aquifer zone is interconnected by fractures with the underlying crystalline rock aquifer zone. Groundwater recharge occurs in the upland areas and then flows in the direction of Coddle Creek to the north. Groundwater recharge and discharge at the landfill site is anticipated to follow the local slope aquifer system as described by LeGrand (2004). The general direction of groundwater flow can be approximated from the surface topography. The topography at the site generally slopes toward Coddle Creek to the north. Coddle Creek functions as a groundwater discharge divide between the site and the properties on the north side of the stream. A site seasonal high water table potentiometric map prepared by Enviro-Pro, P.C. is attached as Attachment A. 1.3 LFG GENERATION AND MIGRATION LFG is a natural by-product of the anaerobic decomposition of organic waste in a landfill. The production of LFG creates a positive pressure within the landfill that forces the gas to migrate. LFG migrates from place to place by diffusion and pressure gradient and will follow the path of least resistance. Subsurface gas typically migrates above the groundwater table and is restricted laterally by streams. Porous soils lying above the bedrock can serve as pathways to transmit large volumes of gas. Underground off-site migration is common and can be facilitated by the presence of pipelines, buried utility corridors or trenches located within or adjacent to the landfill boundaries. Movement depends on soil type and moisture, and migration distances of 1,500 feet have been observed. Barometric pressure also influences movement. Falling barometric pressure allows methane to migrate out of the landfill and into surrounding areas. 1.4 LFG COMPOSITION LFG is generally composed of 50-55% methane (CH4); 45-50% carbon dioxide (CO2); less than 5% nitrogen (N2); and less than 1% non-methane organic compounds. These individual gases generally remain co-mingled and do not naturally separate. The North Carolina Department of Environmental Quality - Solid Waste Section (SWS) Rules typically focus on methane (CH4) and its explosive properties due to public safety issues. Hydrogen sulfide (H2S) is also of -3- Landfill Gas Monitoring Plan August 16, 2017 particular concern in landfills and is typically recognized by its rotten egg odor. H2S is immediately dangerous to life and health at concentrations of 100 parts per million (ppm). -4- Landfill Gas Monitoring Plan August 16, 2017 2.0 LANDFILL GAS MONITORING 2.1 LFG MONITORING WELL NETWORK - PHASE I/II AREA A total of seven LFG monitoring wells (MMW-1 through MMW-7) will be monitored around the perimeter of the active Phase I/II Area. Additionally, LFG monitoring will be performed within the Scalehouse, Shop, and Gypsum Storage buildings. The approximate locations of these LFG monitoring wells and facility structures are shown on the Landfill Gas Monitoring Location Map included in Attachment B. 2.2 LFG MONITORING WELL NETWORK - PHASE I EXPANSION AREA Beginning at the preceding quarter prior to placing waste in the currently unused Phase I Expansion Area, seven LFG monitoring wells (MMW-1-E1 through MMW-7-E1) will be monitored around the perimeter of the landfill area. These wells will be monitored quarterly during the active and closure/post-closure phases of the Phase I Expansion Area. The approximate locations of these Phase I Expansion Area LFG monitoring wells are shown on the Landfill Gas Monitoring Location Map included in Attachment B. 2.3 LFG MONITORING WELL CONSTRUCTION LFG monitoring wells are installed just above the water table within the unsaturated zone and are equipped with a stopcock valve or a quick connect coupling on the cap, which allows for accurate LFG measurements. The stopcock valve is equipped with a barb connector that will accommodate plastic tubing to connect with the gas monitor. The stopcock valve or a quick connect coupling must be closed between monitoring events. Each LFG monitoring well is constructed with a lockable protective cover that will be secure with a padlock, and is labeled with a permanently affixed identification plate. See a detailed schematic of a landfill gas monitoring well presented as Figure 1 in the attached SWS Landfill Gas Monitoring Guidance (November 2010) included in Attachment C. -5- Landfill Gas Monitoring Plan August 16, 2017 2.4 LFG MONITORING PROCEDURES LFG monitoring at the facility will be performed in general accordance with the procedures outlined in Section 6 of the SWS Landfill Gas Monitoring Guidance (November 2010) included as Attachment C. Methane monitoring will be conducted by personnel trained to use a Landtec GEM 2000 Plus Landfill Gas Monitor (gases measured also include hydrogen sulfide) or equivalent instrument. The general sampling procedures for the LFG monitoring wells will be as follows: 1) Calibrate the instrument in accordance with the manufacturer’s recommendations; 2) Connect via tubing the instrument input port to the well sampling port; 3) Conduct a sample purge by pumping for one minute; 4) Read the percent methane, percent LEL (lower explosive limit), percent oxygen, percent carbon dioxide, and hydrogen sulfide content; and 5) Record the stabilized readings from Step 4. The results of these measurements will be initially recorded on field logs and then these data recorded on the SWS Landfill Gas Monitoring Form that is included in Attachment D. The LFG monitoring data form and results for each quarterly monitoring event will be retained in the facility’s operating record, unless an exceedance has occurred and/or is requested by the SWS. 2.5 LFG RESPONSE PROCEDURES Should methane gas levels be detected above the performance limits, landfill personnel will immediately take the necessary steps to protect human health and notify the SWS. The steps that would be taken include but are not limited to: • Restrict access to any facility structures or exterior areas displaying high methane levels; • Prohibit the use of any equipment or materials that may cause sparks or an open flame; • Report methane levels to the Operations Manager; -6- Landfill Gas Monitoring Plan August 16, 2017 • Turn off the electrical main switch outside of any structure exhibiting high methane levels; and • Direct qualified and properly equipped response teams/contractors to locate the source of methane and cap or isolate it. Within seven days of detecting methane levels exceeding the maximum LEL (25% LEL in site structures and LEL at the facility property boundaries), the methane gas data will be placed in the operating record along with a description of the steps taken to protect human health. Within 60 days of detecting gas levels exceeding the maximum LEL, a methane remediation plan will be submitted to the SWS for their review and approval. This plan will describe the methods to be utilized to locate the source of the methane and control it. Once approved, the plan will be implemented within 60 days. ATTACHMENT A SEASONAL HIGH WATER TABLE POTENTIOMETRIC MAP DATE:DWG SCALE: DRAWN BY:CHECKED BY:APPROVED BY: PROJECT NO: ATTACHMENT: SEASONAL HIGH WATER TABLE POTENTIOMETRIC MAP 111-370.0021"=300'8/10/17 PAB EHS EHS A GREENWAY WASTE SOLUTIONS OF HARRISBURG, LLC HARRISBURG, NORTH CAROLINA www.cecinc.com 1900 Center Park Drive - Suite A - Charlotte, NC 28217 Ph: 980.237.0373 · Fax: 980.237.0372 NORTH REFERENCE ATTACHMENT B LANDFILL GAS MONITORING LOCATION MAP DATE:DWG SCALE: DRAWN BY:CHECKED BY:APPROVED BY: PROJECT NO: ATTACHMENT: LANDFILL GAS MONITORING LOCATION MAP 111-370.0021"=300'8/10/17 PAB EHS EHS B GREENWAY WASTE SOLUTIONS OF HARRISBURG, LLC HARRISBURG, NORTH CAROLINAREFERENCE www.cecinc.com 1900 Center Park Drive - Suite A - Charlotte, NC 28217 Ph: 980.237.0373 · Fax: 980.237.0372 NORTH ATTACHMENT C NCDEQ SOLID WASTE SECTION LANDFILL GAS MONITORING GUIDANCE 1 NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT SOLID WASTE SECTION LANDFILL GAS MONITORING GUIDANCE NOVEMBER 2010 TABLE OF CONTENTS Section 1 – Introduction ………………………………………………………...............................Page 2 Section 2 – Factors Influencing Landfill Gas Generation and Migration …………………………Page 3 Section 3 - Current Solid Waste Section Rules Pertaining to Landfill Gas Monitoring ……….….Page 5 Section 4 – Landfill Gas Incidents and Explosions ………………………………………………..Page 9 Section 5 – Landfill Gas Monitoring Wells……………..………………………………………….Page 11 Section 6 – Landfill Gas Monitoring Instrumentation ……………………………………………..Page 14 Section 7 – References ……………………………………………………………………………..Page 17 Section 8 – Suggested Outline for a Landfill Gas Monitoring Plan ………………………………..Page 18 Section 9 – Checklist of Items to be Included in a Landfill Gas Monitoring Plan ………………....Page 19 2 SECTION 1 - Introduction North Carolina Solid Waste Management Rules 15A NCAC 13B require quarterly monitoring of methane gas (at MSW landfills) and quarterly monitoring of methane and other explosive landfill gases (LFG) (at C&D and other landfills) to ensure that landfill gas does not exceed the lower explosive limit (LEL) at the facility property boundary or 25 percent of the lower explosive limit in facility structures. If the concentration exceeds the specified limits, steps must be taken to ensure the protection of public health and a remediation plan must be implemented immediately. A landfill gas monitoring plan is necessary to ensure that these performance standards are met and this guidance document was developed to assist in establishing a standardized procedure for the monitoring of landfill gas. Background Organic matter in landfills begins to decompose almost immediately after being placed in a disposal site. Putrescible wastes such as food products and sewage sludges begin to break down by biological processes very rapidly whereas paper, cardboard or cellulose based materials are slower to decompose. However, when conditions become favorable, most organic matter will decompose. The decomposition process typically goes through several stages that depend on conditions such as pH, temperature, and moisture content. The final stage results in the production of methane and although the rate of production may vary, most landfills produce methane. Landfill Gas Generation Landfill gas is a natural by-product of the anaerobic decomposition of organic waste in a landfill. The composition, quantity and rate of landfill gas generation are dependent on the types of waste that are decomposing and the level of microbial activity within the wastes. The decomposition of biodegradable waste begins with aerobic decomposition which lasts until the oxygen in the landfill is depleted. The anaerobic phase then begins, resulting in landfill gas production. There are four stages of landfill gas composition: the first stage is characterized by elevated nitrogen levels and occurs when the landfill is new. The second stage is characterized by elevated carbon dioxide levels and occurs for a relatively short period of time after the initial stage is complete. The third and fourth stages are characterized by elevated methane concentrations and represent the active life of a landfill and the post-closure time frame. Landfill gas is generally composed of 50-55% methane (CH4); 45-50% carbon dioxide (CO2); less than 5% nitrogen (N2); and less than 1% non-methane organic compounds. These individual gases generally remain co-mingled and do not naturally separate. The Solid Waste Section (SWS) Rules typically focus on methane (CH4) and its explosive properties due to public safety issues. Hydrogen sulfide (H2S) is also of particular concern in landfills and is typically recognized by its rotten egg odor. H2S is immediately dangerous to life and health at concentrations of 100 parts per million (ppm). Landfill Gas Migration The production of landfill gas creates a positive pressure within the landfill that forces the gas to migrate. Landfill gas migrates from place to place by diffusion and pressure gradient and will follow the path of least resistance. Subsurface gas typically migrates above the groundwater table and is restricted laterally by streams. Porous soils lying above the bedrock can serve as pathways to transmit large volumes of gas. Underground off-site migration is common and can be facilitated by the presence of pipelines, buried utility corridors or trenches located within or adjacent to the landfill boundaries. Movement depends on soil type and moisture, and migration distances of 1,500 feet have been observed. Barometric pressure also influences movement. Falling barometric pressure allows methane to migrate out of the landfill and into surrounding areas. 3 SECTION 2 - Factors Influencing Landfill Gas Generation and Migration Factors that affect landfill gas generation and migration through the subsurface include the following: Waste Composition The production of landfill gas is directly related to the amount of organic matter present in waste. The bacteria that break down the waste require small amounts of specific minerals such as calcium, potassium, magnesium and other micronutrients. Bacteria are able to thrive and produce landfill gas if the minerals/micronutrients are present. If the minerals/micronutrients are not present or if substances that inhibit bacterial growth exist, landfill gas production will occur at a reduced rate. Some forms of organic matter such as cellulose break down quickly whereas matter such as lignin breaks down more slowly. The rate at which landfill gas is produced depends on the proportions of each type of organic matter present in the waste. Moisture Content Landfills with higher moisture content generate higher concentrations of landfill gas in earlier stages of development (such as during leachate recirculation). Moisture accelerates the methanogenic process. Temperature Landfill bacteria are temperature dependant. They are able to survive and function below the freezing point, but they also function well at temperatures up to 65°C. Anaerobic bacteria produce small amounts of heat and may not be able to maintain the temperature of a shallow landfill when external temperatures decrease, so LFG generation may exhibit seasonal variations. Saturated landfills may not achieve ideal temperatures because the bacteria do not generate sufficient heat to raise the temperature of the excess water. Higher temperatures promote volatilization and chemical reactions with the waste so the trace gas component of landfill gas tends to increase with higher landfill temperatures. Age of Landfill Typically, landfills have an increasing generation of landfill gas for a number of years until closure at which time landfill gas generation reaches a peak and begins to subside. An evaluation of the age of the landfill and use of a landfill gas generation curve can be helpful in determining the likelihood of significant landfill gas concentrations from the landfill. Landfill Cap The type or presence of landfill cover can influence landfill gas generation and migration. Although a low permeability cap will reduce moisture and landfill gas generation over the longer term, initially, the installation of a landfill cap could drive landfill gas migration further from the landfill in the subsurface without proper ventilation (either passive or active). This is especially true in the case of unlined (unvented) landfills. Water Table Landfill gas movement in unlined landfills may be influenced by groundwater table variations. A rising water table could cause displacement and force upward movement of landfill gas. 4 Man-made and Natural Conduits Structures such as drains, trenches, and buried utility corridors can act as conduits for landfill gas migration. Geologic features including fractured bedrock, porous soil, and permeable strata also provide conduits for landfill gas migration Landfill Liner Conditions The presence of a Subtitle-D (or equivalent) landfill liner has the capability to limit the lateral migration of landfill gas in the subsurface. Unlined landfills have no barrier to prevent lateral landfill gas migration in the subsurface. Weather Conditions Barometric pressure and precipitation have significant effects on landfill gas migration. Increased barometric pressure yields decreased landfill gas venting from the subsurface, until the pressure within the subsurface is greater than the atmospheric (barometric) pressure. Conversely, as the barometric pressure decreases, the landfill will vent the stored gas until pressure equilibrium is reached. Capping of a landfill can influence the effect of barometric pressure on landfill gas migration. Generally, a more permeable landfill cap will allow greater influence by barometric pressure than a less permeable landfill cap. 5 SECTION 3 – Current Solid Waste Section Rules Pertaining to Landfill Gas Monitoring Web link to the 15A NCAC 13B rules - http://portal.ncdenr.org/web/wm/sw/rules 15A NCAC 13B .0101- DEFINITIONS .0101 (14) "Explosive gas" means Methane (CH4) .0101(25) "Lower explosive limit" (LEL) means the lowest percent by volume of a mixture of explosive gases which will propagate a flame in air at 25 degrees Celsius and atmospheric pressure. .0503 - SITING AND DESIGN REQUIREMENTS FOR DISPOSAL FACILITIES .0503(2) A site shall meet the following design requirements: (a) The concentration of explosive gases generated by the site shall not exceed: (i) twenty-five percent of the limit for the gases in site structures (excluding gas control or recovery system components); and (ii) the lower explosive limit for the gases at the property boundary; .0543 - CLOSURE AND POST-CLOSURE REQUIREMENTS FOR C&DLF FACILITIES .0543(e) Post-closure criteria. (1) Following closure of each C&DLF unit, the owner and operator must conduct post-closure care. Postclosure care must be conducted for 30 years, except as provided under Subparagraph (2) of this Paragraph, and consist of at least the following: (C) maintaining and operating the gas monitoring system in accordance with the requirements of Rule .0544 of this Section; and (2) The length of the post-closure care period may be: (A) decreased by the Division if the owner or operator demonstrates that the reduced period is sufficient to protect human health and the environment and this demonstration is approved by the Division; or (B) increased by the Division if the Division determines that the lengthened period is necessary to protect human health and the environment. .0544 - MONITORING PLANS AND REQUIREMENTS FOR C&DLF FACILITIES .0544(d) Gas Control Plan (1) Owners and operators of all C&DLF units must ensure that: (A) the concentration of methane gas or other explosive gases generated by the facility does not exceed 25 percent of the lower explosive limit 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. (2) Owners and operators of all C&DLF units must implement a routine methane monitoring program to ensure that the standards of this Paragraph are met. (A) The type of monitoring must be determined 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 offsite structures adjacent to property boundaries. 6 (B) The frequency of monitoring shall be quarterly or as approved by the Division. (3) If methane or explosive gas levels exceeding the limits specified in Subparagraph (d)(1) of this Rule are detected, the owner and operator must: (A) immediately take all steps necessary to ensure protection of human health and notify the Division; (B) within seven days of detection, place in the operating record the methane or explosive gas levels detected and a description of the steps taken to protect human health; and (C) within 60 days of detection, implement a remediation plan for the methane or explosive gas releases, place a copy of the plan in the operating record, and notify the Division that the plan has been implemented. The plan must describe the nature and extent of the problem and the proposed remedy. (4) Based on the need for an extension demonstrated by the operator, the Division may establish alternative schedules for demonstrating compliance with Parts (3)(B) and (3)(C) of this Paragraph. (5) For purposes of this Item, "lower explosive limit" means the lowest percent by volume of a mixture of explosive gases in air that will propagate a flame at 25 C and atmospheric pressure. .0566 - OPERATIONAL REQUIREMENTS FOR LAND CLEARING/INERT DEBRIS (LCID) LANDFILLS .0566(13) The concentration of explosive gases generated by the facility shall not exceed: (a) Twenty-five percent of the lower explosive limit for the gases in facility structures. (b) The lower explosive limit for the gases at the property boundary. .1626 – OPERATIONAL REQUIREMENTS FOR MSWLF FACILITIES .1626(4) Explosive gases control. (a) Owners or operators of all MSWLF units must ensure that: (i) The concentration of methane gas generated by the facility does not exceed 25 percent of the lower explosive limit for methane in facility structures (excluding gas control or recovery system components); and (ii) The concentration of methane gas does not exceed the lower explosive limit for methane at the facility property boundary. (b) Owners or operators of all MSWLF units must implement a routine methane monitoring program to ensure that the standards of (4)(a) are met. A permanent monitoring system shall be constructed on or before October 9, 1994. A temporary monitoring system shall be used prior to construction of the permanent system. (i) The type and frequency of monitoring must be determined based on the following factors: (A) Soil conditions; (B) The hydrogeologic conditions surrounding the facility; (C) The hydraulic conditions surrounding the facility; and (D) The location of facility structures and property boundaries. (ii) The minimum frequency of monitoring shall be quarterly. (c) If methane gas levels exceeding the limits specified in (4)(a) are detected, the owner or operator must: (i) Immediately take all necessary steps to ensure protection of human health and notify the Division; (ii) Within seven days of detection, place in the operating record the methane gas levels detected and a description of the steps taken to protect human health; and (iii) Within 60 days of detection, implement a remediation plan for the methane gas releases, place a copy of the plan in the operating record, and notify the Division that the 7 plan has been implemented. The plan shall describe the nature and extent of the problem and the proposed remedy. (iv) Based on the need for an extension demonstrated by the operator, the Division may establish alternative schedules for demonstrating compliance with (4)(c)(ii) and (iii) of this Rule. (d) For purposes of this Item, "lower explosive limit" means the lowest percent by volume of a mixture of explosive gases in air that will propagate a flame at 25°C and atmospheric pressure. .1626(10) Recordkeeping requirements. (a) The owner or operator of a MSWLF unit must record and retain at the facility, or an alternative location near the facility approved by the Division, in an operating record the following information as it becomes available: (iii) Gas monitoring results and any remediation plans required by Item (4) of this Rule; .1627 – CLOSURE AND POST CLOSURE REQUIREMENTS FOR MSWLF ACTIVITES .1627(d) Post-Closure Criteria (1) Following closure of each MSWLF unit, the owner or operator shall conduct post-closure care. Post-closure care shall be conducted for 30 years, except as provided under Subparagraph (2) of this Paragraph, and consist of at least the following: (D)-Maintaining and operating the gas monitoring system in accordance with the requirements of Rule .1626 of this Section. (2) The length of the post-closure care period may be: (A) Decreased by the Division if the owner or operator demonstrates that the reduced period is sufficient to protect human health and the environment and this demonstration is approved by the Division; or (B) Increased by the Division if the Division determines that the lengthened period is necessary to protect human health and the environment. (3) Following completion of the post-closure care period for each MSWLF unit, the owner or operator shall notify the Division that a certification, signed by a registered professional engineer, verifying that post-closure care has been completed in accordance with the post-closure plan, has been placed in the operating record. NOTES: Based on the referenced rules above, the following words / phrases are presently in the Solid Waste Section rules pertaining to methane and explosive landfill gas. Rule .0101(14) states: “Explosive gas means Methane (CH)”. Rule .0503 (2)(a) refers to “explosive gases”. Rule .0544(d) refers to “Gas Control Plan” Rule .0544(d)(1) refers to “methane or other explosive gases”. Rule .0544(d)(2) refers to “methane monitoring program” Rule .0544(d)(3) refers to “methane or explosive gas levels” Rule .0566 (13) refers to “explosive gases”. Rule .1626 (4) refers to “explosive gases control” Rule .1626(4)(a-b) refers to “methane monitoring” and “methane monitoring program”. 8 Monitoring Goals Landfill design and landfill gas monitoring regulations in North Carolina require that there not be an exceedance of 100% of the Lower Explosion Limit (LEL) (equivalent to 5% methane) at the property boundary, or 25% LEL in on-site structures. These regulations were developed over time to protect the health and safety of the citizens of North Carolina and the U.S. from the asphyxiation and explosive hazards of landfill gas. NC Rule History A review of NC landfill guidance documents and regulations from 1972 to the present indicates that from 1972 through 1982, there was no mention of design requirements regarding the control of landfill gas, nor were there any landfill monitoring requirements for landfill gas. In 1982, the regulations were changed to require that sanitary landfill design prevent landfill gas concentrations of 100% LEL at the property boundary line and 25% inside on-site structures. Although a design requirement was added, no design requirement was established to determine if the design requirement was being met. In 1993 with the establishment of .1600 rules, requirements for designs to limit landfill gas levels to below 100% at the property boundary line and 25% in on-site structures and monitoring of landfill gas concentrations around the perimeter of the landfill and inside on-site structures were adopted. 9 SECTION 4 – Landfill Gas Incidents and Explosions Hazards Involving Landfill Gas Landfill fires may or may not be directly caused by landfill gas. The primary concern with these fires is air contamination from the resulting smoke; however they also present a variety of additional problems. In addition to concerns with containing and extinguishing landfill fires, potential reactions involving unknown chemicals in the landfill can cause uncertain hazards. Discarded consumer products in a landfill, such as pesticides, paints, solvents, cleaners, and other material can be the source of chemical releases. Heat from the fire can cause chemicals to volatilize, breakdown, and enter the environment. Also to be considered is the presence of other combustible gases in addition to methane. Whenever an environmental investigation of a landfill is prompted by odorous compounds or explosive gases, the presence of toxic substances should also be investigated. One example is hydrogen sulfide (H2S) that can cause asphyxiation and is flammable. An analysis should include alkyl benzenes, sulfur compounds, vinyl chloride, and methane, and other products associated with industrial wastes, construction and debris waste, and normal organic and inorganic waste. Fires and explosion hazards become a concern when gases collect in confined spaces. Buildings, basements, and pits are typically regarded as confined spaces. However, landfill gases also collect in and migrate to cracks in the landfill cover, leachate “springs”, cracks in adjacent structures, paved parking areas, etc. Fires can occur on the surface and underground. Surface fires involve recently buried waste near the surface in an aerobic decomposing layer, typically 1 to 4 feet below ground. These fires can be intensified by subsurface landfill gas and spread throughout the landfill. Subsurface fires occur deeper within the landfill, involve material buried for months or years, and can burn for days and months. The following is a brief summary of some incidents involving landfill gas migration from landfills: 2007 Four employees died as a result of exposure to high concentrations of hydrogen sulfide while attempting to repair a leachate pump at a C&D landfill in Superior, Wisconsin (Journal of Environmental Heath 2008). 1999 An 8-year old girl was burned on her arms and legs when playing in an Atlanta, Georgia playground. The area was reportedly used as an illegal dumping ground many years ago (Atlanta Journal-Constitution 1999). 1994 While playing soccer in a park built over an old landfill in Charlotte, North Carolina, a woman was seriously burned by a methane explosion (Charlotte Observer 1994). 1987 Offsite landfill gas migration is suspected to have caused a house to explode in Pittsburgh, Pennsylvania (EPA 1991). 1984 Landfill gas migrated to and destroyed one house near a landfill in Akron, Ohio. Ten houses were temporarily evacuated (EPA 1991). 1983 An explosion destroyed a residence across the street from a landfill in Cincinnati, Ohio. Minor injuries were reported (EPA 1991). 1975 In Sheridan, Colorado, landfill gas accumulated in a storm drain pipe that ran through a landfill. An explosion occurred when several children playing in the pipe lit a candle, resulting in serious injury. 10 1969 Methane gas migrated from an adjacent landfill into the basement of an armory in Winston-Salem, North Carolina. A lit cigarette caused the gas to explode, killing three men and seriously injuring five others (USACE 1984). 11 SECTION 5 - Landfill Gas Monitoring Wells Locations Landfill gas monitoring well locations will be site specific depending upon site geology, depth to groundwater, surface water features, on-site and off-site structures and sensitive receptors. The landfill gas monitoring wells must be spaced no more than 500 feet apart depending upon site specifics. A readily accessible, unobstructed path must be maintained so that landfill gas monitoring wells are always accessible using four-wheel drive vehicles. Regardless of site specifics, the permittee must obtain approval from the Solid Waste Section for the design and installation of any landfill gas monitoring well system. Well Construction and Installation Landfill gas monitoring wells are the same as groundwater monitoring wells with two exceptions. Landfill gas monitoring wells are installed just above the water table within the unsaturated zone and are equipped with a stopcock valve or a quick connect coupling on the cap, which allows for accurate landfill gas measurements. The stopcock valve must be equipped with flexible tubing and a barb connection that will fit the gas meter’s inlet tube. The stopcock valve or a quick connect coupling must be closed between monitoring events. The landfill gas monitoring well must also be capped, locked, and labeled with a permanently affixed identification plate stating the well contractor name and certification number, date of well competition, total depth of well, screen length and well ID number. See detailed schematics of a landfill gas monitoring well (Figure 1). The depth of each landfill gas monitoring well will be site specific depending upon depth to groundwater. Landfill gas monitoring wells must be constructed the same as groundwater monitoring wells as described in 15A NCAC Subchapter 2C. Typically landfill gas monitoring wells must be installed using 2” PVC piping and screen. The screen length, also site specific, must span the majority of the unsaturated zone while still allowing for proper well construction. A North Carolina Licensed/Professional Geologist must be present to supervise the installation of all landfill gas monitoring wells. The exact locations, screened intervals, and nesting of the wells must be approved by the Solid Waste Section Hydrogeologist prior to landfill gas monitoring well installation. Each landfill gas monitoring well must be surveyed for location and elevation by a North Carolina Registered Land Surveyor. Within thirty (30) days of the completed construction of each new landfill gas monitoring well, the well construction record (Division of Water Quality form GW-1b) and the boring log/well detail diagram of each well must be submitted to the Solid Waste Section. The submittal must also include a scaled topographic map showing the location and identification of new, existing and abandoned landfill gas monitoring wells. Nested and Clustered Landfill Gas Monitoring Wells Nested and/or clustered landfill gas monitoring wells may be required in unsaturated zones of 45 feet or more to measure specific depths of the unsaturated zone. Initially, the installation of one long screen shall be sufficient. If a monitoring event shows an exceedance of the lower explosive limit, then the Solid Waste Section may require the installation of nested and/or clustered landfill gas monitoring wells. Abandonment of Wells An abandonment record must be submitted to the Solid Waste Section within 30 (thirty) days of the abandonment of a landfill gas monitoring well. The landfill gas monitoring well(s) must be overdrilled and sealed with grout in accordance with 15A NCAC 2C .0113(d) and certified by a North Carolina Licensed/Professional Geologist. 12 Professional Certification The certification statement below must be signed and sealed by a Professional Geologist and submitted with the Landfill Gas Monitoring Plan. The landfill gas monitoring plan for this facility has been prepared by a qualified geologist who is licensed to practice in the State of North Carolina. The plan has been prepared based on first-hand knowledge of site conditions and familiarity with North Carolina solid waste rules and industry standard protocol. This certification is made in accordance with North Carolina Solid Waste Regulations, indicating this Landfill Gas Monitoring Plan should provide early detection of any release of hazardous constituents to the uppermost aquifer, so as to be protective of public health and the environment. No other warranties, expressed or implied, are made. Signed _______________________________ Printed _______________________________ Date _________________________________ Not valid unless this document bears the seal of the above mentioned licensed professional. 13 Figure 1 – Landfill Gas Monitoring Well Detail 14 SECTION 6 – Landfill Gas Monitoring Instrumentation The person using the landfill gas monitoring instrument must understand the principles of operation and follow the manufacturer's instructions. This includes calibrating the instrument according to the manufacturer’s specifications. Include the following on the top portion of the landfill gas monitoring form (See example below) : facility name, permit number, type and serial number of gas monitoring instrument, calibration date of the instrument, date and time of field calibration, type of gas used for field calibration (15/15 or 35/50), expiration date of field calibration gas canister, date of landfill gas monitoring event, name and position of sample collector, pump rate of instrument being used, ambient air temperature, and general weather conditions. Verification that the equipment was calibrated in accordance with the manufacturer’s specifications is also required. When determining which field calibration gas to use, take into consideration the expected levels of methane in the landfill gas monitoring wells. If the methane levels are expected to be low, use the 15/15 gas canister (15% CO2/15% CH4). If the methane levels are expected to be high, use the 35/50 gas canister (35% CO2/50% CH4). For every landfill gas monitoring well, please include the following: verification of sample tube purge prior to each sample taken (should be one minute), the time pumped in seconds (should be at least one minute), barometric pressure, time stabilized reading collected, percent lower explosive limit, percent methane by volume, percent oxygen, percent carbon dioxide, and any observations or comments. Most modern gas monitoring instruments will measure percent oxygen and carbon dioxide in addition to the methane and display the results on the same instrument. Recording the levels of percent oxygen and carbon dioxide should require little or no extra effort. The landfill gas monitoring data form (See example below) and results should be retained in the facility’s operating record unless an exceedance has occurred and/or is requested by the Solid Waste Section. Landfill gas monitoring readings from non-calibrated or inaccurately calibrated instruments are not reliable, and will therefore be rejected by the Solid Waste Section. Landfill gas monitoring readings collected with monitoring equipment that was not designed for landfill gas monitoring will also be rejected by the Solid Waste Section. There are several different landfill gas monitoring instruments on the market which may be used in order to obtain all of the information required by the Solid Waste Section. Monitoring Times Monitoring times are also important when conducting landfill gas monitoring. Proper landfill gas monitoring should include sampling during times when landfill gas is most likely to migrate. Landfill gas can migrate and accumulate not only in landfill gas monitoring wells; it can also migrate and accumulate in buildings and other structures. Because subsurface gas pressures are considered to be at a maximum during the afternoon hours, monitoring should be conducted in the afternoon or whenever the barometric pressure is low. Scientific evidence also indicates that weather and soil conditions influence the migration of landfill gas. Barometric pressure and precipitation have significant effects on landfill gas migration. Increased barometric pressure generates decreased landfill gas venting from the subsurface, until the pressure within the subsurface is greater than the atmospheric (barometric) pressure. On the other hand, when the barometric pressure decreases, the landfill will vent the stored gas until a pressure equilibrium is reached. Capping of a landfill can influence the effect of barometric pressure on landfill gas migration. Generally, a more permeable landfill cap will allow greater influence by barometric pressure than a less permeable 15 landfill cap. As a result, landfill gas monitoring should be conducted when the barometric pressure is low and soils are saturated. During the winter season when snow cover is just beginning to melt or when the ground is frozen or ice covered, landfill gas monitoring should be conducted when the barometric pressure is low. Landfill Gas Sampling Procedures Any accumulation of landfill gas in the landfill gas monitoring wells is the result of landfill gas migration. The following procedure is a recommended example for conducting landfill gas monitoring well sampling, but always read and follow the manufacturer’s instructions because each instrument will be different. Step 1 – Calibrate the instrument according to the manufacturer’s specifications. In addition, prepare the instrument for monitoring by allowing it to properly warm up as directed by the manufacturer. Make sure the static pressure shows a reading of zero on the instrument prior to taking the first sample. Step 2 – Purge sample tube for at least one minute prior to taking reading. Connect the instrument tubing to the landfill gas monitoring well cap fitted with a stopcock valve or quick connect coupling. Step 3 – Open the valve and record the initial reading and then the stabilized reading. A stable reading is one that does not vary more than 0.5 percent by volume on the instrument’s scale. Step 4 - Record the stabilized reading including the oxygen concentration and barometric pressure. A proper reading should have two percent oxygen by volume or less. If levels of oxygen are higher, it may indicate that air is being drawn into the system giving a false reading. Step 5 – Turn the stopcock valve to the off position and disconnect the tubing. Step 6 – Proceed to the next landfill gas monitoring well and repeat Steps 2 – 5. Landfill Gas Constituent Sampling and Analysis Sampling of landfill gas to determine volume percentages/concentrations of each constituent can be accomplished through the use of canisters which are specifically designed for landfill gas analysis. Several analytical methods are available to determine the concentrations of a variety of constituents. Typically, landfill gas analysis of this type is performed to determine the non-methane organic compounds emission rate for Tier 2 testing under the Clean Air Act (Title V Subpart WWW 60.754). Isotropic identification of landfill methane can be accomplished to identify one source of methane from another. In this case, isotopes of carbon and hydrogen in the methane are analyzed to determine the methane source. 17 SECTION 7 - References Agency for Toxic Substances & Disease Registry. “Landfill Gas Primer- An Overview for Environmental Health Professionals. 2001.” http://www.atsdr.cdc.gov/HAC/landfill/html/toc.html (accessed February 24. 2010). California Environmental Protection Agency. “Landfill Gas Monitoring Well Functionality at 20 California Landfills, 2008”. http://www.calrecycle.ca.gov/Publications/Organics/2008022.pdf (accessed February 24 2010). Florida Department of Environmental Protection. Gas Management Systems, under Rule 62-701.530. http://www.dep.state.fl.us/waste/quick_topics/rules/default.htm (accessed February 24, 2010). Missouri Department of Natural Resources, Flood Grant Team. “An Analysis of Landfill Gas Monitoring Well Design and Construction, 2007”. http://www.clu- in.org/conf/itrc/directpush/prez/Missouri_Study.pdf (accessed February 24, 2010). Missouri Department of Natural Resources. “Design and Construction of Landfill Gas Monitoring Wells”. http://www.dnr.missouri.gov/pubs/pub2054.pdf (accessed February 24. 2010). Wisconsin Department of Natural Resources. Environmental Monitoring for Landfills, under Chapter NR 507.22. http://www.dnr.state.wi.us/org/aw/wm/information/wiacsss.htm (accessed February 24, 2010). “Landfill Gas-an Overview” Landfill-gas.com. Web, 22, Feb. 2010 http://www.landfill-gas.com/webpage -LFG-overview.doc 18 SECTION 8 – Suggested Outline for a Landfill Gas Monitoring Plan 1. Introduction 1.1. Background (project overview, site observations, NCDENR rules referenced) 1.2. Site Geology with discussion of groundwater depth and flow (potentiometric surface map) 1.3. Regulatory Limits 2. Landfill Gas Monitoring 2.1. Landfill Gas Monitoring Well Locations (discussion of reasoning behind proposed locations, discussion of well construction, reference map showing proposed locations, reference table displaying well ID, well depth, screen interval and depth to groundwater) 2.2. Structure and Ambient Sampling 2.3. Landfill Gas Monitoring Frequency 3. Landfill Gas Sampling Procedures 3.1. Detection Equipment Used (discussion of calibration procedures) 3.2. Landfill Gas Sampling Procedure 4. Record Keeping and Reporting 4.1. Landfill Gas Monitoring Data Form 4.2. Sampling Reports 4.3. Permanent Record Keeping 5. Contingency Plan 6. Certification of Professional Geologist 7. Certification of Registered Land Surveyor Figures Map displaying proposed landfill gas monitoring well locations Potentiometric Surface Map Diagram showing construction of stopcock valve or quick connect coupling on well cap Diagram showing well construction of each landfill gas monitoring well Table Table displaying well ID, well depth, screen interval, depth to groundwater Example of landfill gas monitoring data form 19 SECTION 9 – Checklist of Items to be Included in a Landfill Gas Monitoring Plan 1. Depth to groundwater discussion 2. Well locations a. Number of wells b. Well spacing 3. Instrumentation being used a. Calibration procedures 4. Sampling procedures as per the manufacture’s instructions 5. Map of well locations 6. Table describing each well location a. Well ID b. Well depth c. Screen interval d. Depth to groundwater e. Subsurface lithology 7. Diagram of cap construction w/ stopcock valve or quick connect coupling 8. Diagram of well construction 9. Potentiometric surface map 10. Professional Geologist certification 11. Registered Land Surveyor certification ATTACHMENT D NCDEQ SOLID WASTE SECTION LANDFILL GAS MONITORING FORM Revised – March 6, 2017 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: Sampling Date: NC Landfill Rule (.0500 or .1600): Sample Collector Name & Position: Gas Meter Type & Serial Number: Gas Meter Calibration Date: Field Calibration Date & Time: Field Calibration Gas Type (15/15 or 35/50): Field Calibration Gas Canister Expiration Date: Gas Meter Pump Rate: Ambient Air Temperature: Barometric Pressure (in. or mm Hg): Weather Conditions: Instructions: Under “Location or LFG Well”, list monitoring well # or describe monitoring location (e.g., inside field office). Attach a test location map or drawing. Report methane readings as both % LEL and % CH4 by volume. Convert % CH4 (by volume) to % LEL as follows: % methane (by volume)/20 = % LEL. *Hydrogen Sulfide (H2S) gas monitoring may be required for Construction & Demolition Landfills (CDLFs). See individual permit conditions and/or Facility LFG monitoring plan. Location or LFG Well ID Sample Tube Purge Time of Day Time Pumped (sec) Initial % LEL Stabilized % LEL % CH4 (volume) % O2 (volume) % CO2 (volume) % H2S* (volume) NOTES NOTE: If needed, attach additional data forms to include additional LFG monitoring data locations for the facility. ACTION LEVELS: Methane: >1.25% by volume (inside structures) AND >5% by volume (at facility boundary) Hydrogen Sulfide: >1% by volume (inside structures) AND >4% by volume (at facility boundary) 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 APPENDIX F CONSTRUCTION QUALITY ASSURANCE CONSTRUCTION QUALITY ASSURANCE AND CONSTRUCTION QUALITY CONTROL PLAN GREENWAY WASTE SOLUTIONS OF HARRISBURG, LLC CONSTRUCTION AND DEMOLITION DEBRIS LANDFILL AND LARGE TYPE 1 SOLID WASTE COMPOST AND REPROCESSING FACILITY PERMIT NUMBER 13-06 Prepared For: GREENWAY WASTE SOLUTIONS OF HARRISBURG, LLC. Prepared By: CIVIL & ENVIRONMENTAL CONSULTANTS, INC. CHARLOTTE, NORTH CAROLINA CEC Project 111-370.002 SEPTEMBER 2017 -i- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 TABLE OF CONTENTS Page 1.0 GENERAL ..........................................................................................................................1 1.1 Introduction ............................................................................................................. 1 1.2 Definitions Relating to Construction Quality ......................................................... 2 1.2.1 Construction Quality Assurance and Construction Quality Control ...........2 1.2.2 Use of the Terms in this Plan .......................................................................2 1.2.3 CQC/CQA Certification Document .............................................................3 1.2.4 Discrepancies between Documents ..............................................................3 1.3 Parties to Construction Quality Assurance ............................................................. 3 1.3.1 Description of the Parties .............................................................................3 1.3.1.1 Design Engineer ...............................................................................4 1.3.1.2 Contractor ........................................................................................4 1.3.1.3 Construction Quality Assurance (CQA) Engineer ...........................4 1.3.1.4 Construction Surveyor .....................................................................4 1.3.1.5 Soils Engineer ..................................................................................4 1.3.1.6 Owner ...............................................................................................5 1.3.1.7 Geosynthetics Manufacturer ............................................................5 1.3.1.8 Geosynthetics Installer .....................................................................5 1.3.1.9 Construction Quality Assurance Consultant ....................................5 1.3.1.10 Geosynthetics Construction Quality Assurance Laboratory ..........6 1.3.1.11 Soils Construction Quality Assurance Laboratory ........................6 1.3.1.12 Construction Quality Control Consultant ......................................6 1.3.1.13 Geosynthetics Construction Quality Control Laboratory ..............6 1.3.1.14 Soils Construction Quality Control Engineer ................................7 1.3.2 Qualifications of the Parties .........................................................................7 1.3.2.1 Contractor ........................................................................................7 1.3.2.2 Geosynthetics Manufacturers...........................................................7 1.3.2.3 Geosynthetics Installer ....................................................................8 1.3.2.4 Construction Quality Assurance Consultant ...................................8 1.3.2.5 Construction Quality Control Consultant .......................................8 1.3.2.6 Geosynthetics Construction Quality Control Laboratory ...............8 1.4 Scope of CQA/CQC ................................................................................................ 9 1.5 Units ........................................................................................................................ 9 1.6 References ............................................................................................................... 9 1.7 Site and Project Control .......................................................................................... 9 1.7.1 CQA/CQC Resolution Meeting ...................................................................9 1.7.2 Preconstruction Meeting ............................................................................10 1.7.2 Daily and Weekly Progress Meetings ........................................................12 1.7.3 Problem or Work Deficiency Meetings .....................................................12 2.0 SURVEYING CONSTRUCTION QUALITY CONTROL .........................................13 2.1 Introduction ........................................................................................................... 13 2.2 Survey Control ...................................................................................................... 13 2.3 Surveying Personnel ............................................................................................. 13 2.4 Precision and Accuracy......................................................................................... 13 -ii- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 2.5 Lines and Grades................................................................................................... 13 2.6 Frequency and Spacing ......................................................................................... 14 2.7 Thickness Measurements ...................................................................................... 15 2.8 Tolerances ............................................................................................................. 16 2.9 Documentation ...................................................................................................... 16 3.0 SOILS CONSTRUCTION QUALITY ASSURANCE AND CONSTRUCTION QUALITY CONTROL ..................................................................18 3.1 Introduction ........................................................................................................... 18 3.2 Earthwork Construction ........................................................................................ 18 3.2.1 Subgrade ....................................................................................................18 3.2.2 Structural/Controlled Fill ...........................................................................18 3.3 Soil Liner System .................................................................................................. 19 3.3.1 Soil Liner Subgrade ...................................................................................19 3.3.2 Soil Liner Material .....................................................................................19 3.4 Soils Testing.......................................................................................................... 19 3.4.1 Test Methods ..............................................................................................19 3.4.2 Soils Testing Requirements .......................................................................20 3.5 Soils Construction Quality Assurance and Construction Quality Control .......... 20 3.5.1 Monitoring .................................................................................................20 3.5.2 Laboratory and Field Tests ........................................................................20 3.5.3 Construction Quality Control and Quality Assurance Testing Frequency ...................................................................................................21 3.5.4 Perforations in Soil Liner ...........................................................................22 3.5.5 Deficiencies................................................................................................22 3.5.5.1 Notification ....................................................................................22 3.5.5.2 Repairs and Retesting ....................................................................23 4.0 GEOMEMBRANE LINER CONSTRUCTION QUALITY ASSURANCE ..............24 4.1 Geomembrane Manufacturer’s Certification and CQA Conformance Testing................................................................................................................... 24 4.1.1 Geomembrane Manufacturer’s Certification .............................................24 4.1.1.1 Raw Material ..................................................................................24 4.1.1.2 Geomembrane Manufacturing .......................................................24 4.1.1.3 Rolls and Sheets .............................................................................25 4.2 Geomembrane Installation .................................................................................... 26 4.2.1 Transportation, Handling, and Storage ......................................................26 4.2.2 Earthwork ...................................................................................................27 4.2.2.1 Surface Preparation ........................................................................27 4.2.2.2 Anchorage System .........................................................................27 4.2.3 Geomembrane Placement ..........................................................................27 4.2.3.1 Field Panel Identification ...............................................................27 4.2.3.2 Field Panel Placement ....................................................................28 4.2.3.2.1 Location ................................................................................... 28 4.2.3.2.2 Installation Schedule ................................................................ 28 4.2.3.2.3 Placement of Geomembrane .................................................... 28 4.2.3.2.4 Damage .................................................................................... 29 -iii- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 4.2.4 Field Seaming ............................................................................................29 4.2.4.1 Seam Layout ..................................................................................29 4.2.4.2 Requirements of Personnel ............................................................30 4.2.4.3 Seaming Equipment and Products .................................................30 4.2.4.4 Nondestructive Seam Continuity Testing ......................................30 4.2.4.5 Destructive Seam Testing ..............................................................30 4.2.4.6 Geosynthetics Construction Quality Control Laboratory Testing ..........................................................................................31 4.2.4.7 Defining Extent of Destructive Seam Test Failure ........................31 4.2.5 Defects and Repairs ...................................................................................31 4.2.6 Liner Systems Acceptance .........................................................................32 4.2.8 Materials in Contact with Geomembranes .................................................32 4.2.8.1 Sumps and Appurtenances .............................................................33 5.0 GEOTEXTILE MATERIAL AND INSTALLATION QUALITY ASSURANCE ...................................................................................................................34 5.1 Manufacturing ....................................................................................................... 34 5.2 Labeling ................................................................................................................ 34 5.3 Shipment and Storage ........................................................................................... 34 5.4 Handling and Placement ....................................................................................... 34 5.5 Seams and Overlaps .............................................................................................. 35 5.6 Repair .................................................................................................................... 35 6.0 HIGH DENSITY POLYTHYLENE PIPE, MANHOLES, AND FITTINGS CONSTRUCTION QUALITY ASSURANCE ..............................................................36 6.1 Material Requirements .......................................................................................... 36 6.2 Manufacturer ......................................................................................................... 36 6.2.1 Verification and Identification ...................................................................37 6.3 Nondestructive Testing ......................................................................................... 37 6.3.1 Nondestructive Testing of Joints ...............................................................37 7.0 GEOCOMPOSITE CONSTRUCTION QUALITY ASSURANCE ...........................38 7.1 Material Requirements .......................................................................................... 38 7.2 Manufacturing ....................................................................................................... 38 7.3 Labeling ................................................................................................................ 38 7.4 Shipment and Storage ........................................................................................... 38 7.5 Handling and Placement ....................................................................................... 39 7.6 Joining ................................................................................................................... 39 7.7 Repair .................................................................................................................... 39 7.8 Placement of Soil Materials .................................................................................. 39 8.0 CONSTRUCTION QUALITY ASSURANCE DOCUMENTATION ........................40 8.1 Documentation ...................................................................................................... 40 8.2 Record Keeping .................................................................................................... 40 8.2.1 Memorandum of Discussion with Contractor ............................................40 8.2.2 Observation Logs and Testing Data Sheets ...............................................41 8.2.3 Construction Problem and Solution Data Sheets .......................................41 -iv- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 8.3 Photographic Reporting Data ................................................................................ 42 8.4 Design and/or Specification Changes ................................................................... 42 8.5 Progress Reports ................................................................................................... 43 8.6 Signature and Final Report ................................................................................... 43 8.7 Storage of Records ................................................................................................ 44 -1- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 1.0 GENERAL 1.1 INTRODUCTION The Greenway Waste Solutions of Harrisburg, LLC Landfill Construction Quality and Quality Control (CQA/CQC) Plan has been prepared to provide the County, Design Engineer, CQA Engineer, the Contractor, and the Geosynthetics Installer the means to govern the construction quality and to satisfy the environmental protection requirements under current solid waste management regulations. More specifically, this CQA/CQC Plan addresses the soils and geosynthetics components of the liner systems. The liner system, as referenced herein, generally consists of a soil subgrade and a composite liner (consisting of a compacted soil liner, a geosynthetic clay liner, and an overlying HDPE geomembrane liner). General references in this Plan to the various components as the "liner" are intended to be as described herein. The CQA Plan is organized as follows: · Section 1.0 – General; · Section 2.0 – Surveying Construction Quality Assurance; · Section 3.0 – Soils Construction Quality Assurance and Construction Quality Control; · Section 4.0 – Geomembrane Liner Construction Quality Assurance; · Section 5.0 – Geotextile Construction Quality Assurance; · Section 6.0 – High Density Polyethylene Pipe, Manholes, and Fittings Construction Quality Assurance; · Section 7.0 – Geocomposite Construction Quality Assurance; and · Section 8.0 – Construction Quality Assurance Documentation. -2- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 1.2 DEFINITIONS RELATING TO CONSTRUCTION QUALITY 1.2.1 Construction Quality Assurance and Construction Quality Control This CQA/CQC Plan is devoted to construction quality assurance/quality control regarding the liner system, and protective cover system. In the case of geosynthetics, CQC is provided by the manufacturers and installers of the various materials. The manufacturer’s specifications and quality control requirements are included by reference only, and a complete updated version will be incorporated as part of the construction contract documents. In the context of this Plan, construction quality assurance and construction quality control are defined as follows: Construction Quality Assurance (CQA) – A planned and systematic procedure for means and actions required to provide reasonable confidence that items or services involved with liner, and protective cover system installation meets contractual and regulatory requirements and will perform satisfactorily when installed. Construction Quality Control (CQC) – Those actions which provide a means to measure and regulate the materials and workmanship of an item or service to contractual and regulatory requirements. 1.2.2 Use of the Terms in this Plan In the context of this document: · Construction Quality Assurance refers to the means and methods employed by the Owner to assure conformity of the liner, and protective cover system materials, workmanship, and installation with this CQA/CQC Plan and Contract Drawings. CQA is provided by the CQA Engineer as a representative of the Owner and independent from construction and installation. -3- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 · Construction Quality Control refers to those actions taken by manufacturers, installers, Quality Control Agency, or Contractor to ensure that the materials and the workman- ship meet the requirements of this CQA/CQC Plan and the Contract Documents for this project. In the case of soils, CQC is provided by the Contractor’s Soils Engineer. 1.2.3 CQC/CQA Certification Document At the completion of construction and prior to placement of waste in the landfill, a certification document will be prepared by the CQA Consultant and be submitted to State solid waste regulators. The certification report will include all QC testing performed by the geosynthetics manufacturers, all CQC testing performed by the CQC Consultant, or geosynthetic installers, and all CQA conformance testing performed by the CQA consultant. 1.2.4 Discrepancies between Documents The CQA/CQC Plan is intended to be a supporting document to improve the overall implementation of the work. The Contractor is instructed to bring discrepancies in the CQA/CQC Plan to the attention of the Design Engineer or CQA Engineer for resolution. The Design Engineer has the sole authority to determine resolution of discrepancies existing within the Contract Documents. Unless otherwise directed by the Design Engineer, the more stringent requirement shall be the controlling resolution. 1.3 PARTIES TO CONSTRUCTION QUALITY ASSURANCE 1.3.1 Description of the Parties The parties to Construction Quality Assurance and Quality Control include the Owner, design engineer, contractor, geosynthetics manufacturer, geosynthetics installer, CQA engineer, geosynthetics CQA laboratory, soils CQA laboratory, CQC consultant, geosynthetics CQC laboratory, and soils CQC engineer. -4- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 1.3.1.1 Design Engineer The Design Engineer is responsible for the engineering design, drawings, plans and specifications for the liner system, and protective cover system. Civil & Environmental Consultants, Inc. has been retained by the Owner as the Design Engineer to prepare the permit application. 1.3.1.2 Contractor The Contractor is generally responsible for the construction of the liner, and protective systems. The Contractor is responsible for submittal coordination and the overall Construction Quality Control (CQC) on the project. The Owner will select the General Contractor during the bidding process. 1.3.1.3 Construction Quality Assurance (CQA) Engineer The CQA Engineer is a party, independent from the Contractor that is responsible for observing, testing, and documenting activities related to the construction quality assurance of the earthworks at the site, and the production and installation of the geosynthetic components of the cap system. The CQA Engineer is also responsible for issuing a certification report, sealed by a Professional Engineer registered in the State of North Carolina. 1.3.1.4 Construction Surveyor The Construction Surveyor, also referred to as the CQC Surveyor, is a subcontractor of the Contractor and responsible for all stakeout and survey control as outlined in Section 2.0, Surveying Quality Control and Quality Assurance. 1.3.1.5 Soils Engineer The Soils Engineer is a representative of the Contractor and responsible for earthwork and soils cap Construction Quality Control (CQC) testing. -5- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 1.3.1.6 Owner The Owner is Greenway Waste Solutions of Harrisburg, Inc. who is responsible for the landfill facility. 1.3.1.7 Geosynthetics Manufacturer The geosynthetics manufacturer is responsible for the production of geomembranes and geotextiles. The manufacturers are responsible for Quality Control (QC) during manufacture of the geosynthetic components, certification of the properties of the geosynthetic components, and field installation criteria. The Contractor will select the manufacturer for the project. 1.3.1.8 Geosynthetics Installer The geosynthetics installer is a subcontractor of the contractor and is responsible for field handling, storing, placing, seaming, protection of (against wind, etc.), and other aspects of the geosynthetics installations, including the geomembranes and geotextiles. The geosynthetics installer may also be responsible for transportation of these materials to the site and for the preparation and completion of anchor trenches. 1.3.1.9 Construction Quality Assurance Consultant The CQA Consultant is a representative of the Owner and is responsible for observing, testing, and documenting activities related to the CQA/CQA of the earthworks at the site and the installation of the geosynthetic components of the liner systems. The CQA Consultant is also responsible for issuing a facility certification report, sealed by a Professional Engineer registered in North Carolina. -6- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 1.3.1.10 Geosynthetics Construction Quality Assurance Laboratory The Geosynthetics CQA Laboratory is a party, independent from the Owner that is responsible for conducting tests on conformance samples of geosynthetics used in the liner systems. The Geosynthetics CQA Laboratory services cannot be provided by any party involved with the manufacture, fabrication, or installation of any of the geosynthetic components. 1.3.1.11 Soils Construction Quality Assurance Laboratory The Soils Construction Quality Assurance Laboratory is a party, independent from the Owner that is responsible for conducting geotechnical tests on conformance samples of soils used in the liner system. The Soils CQA Laboratory service cannot be provided by any party involved with the Contractor. 1.3.1.12 Construction Quality Control Consultant The CQC Consultant is a representative of the Contractor and is responsible for the earthwork and soil liner quality control sampling and testing. The term CQC Consultant shall be used to designate the Engineer in charge of the quality control work. The personnel of the CQC Consultant also include Quality Control Monitors who are also located at the site for construction observation and monitoring. The CQC Consultant is responsible for the timely conveyance of CQC testing results to the CQA Consultant. 1.3.1.13 Geosynthetics Construction Quality Control Laboratory The Geosynthetics CQC Laboratory is a party, independent from the Contractor that is responsible for conducting tests on conformance samples of geosynthetics used in the liner system. -7- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 1.3.1.14 Soils Construction Quality Control Engineer The Soils Construction Quality Control Engineer is a party, independent from the Contractor that is responsible for conducting geotechnical tests on conformance samples of soils used in the liner system. 1.3.2 Qualifications of the Parties The following qualifications are required of all parties involved with the manufacture, fabrication, installation, transportation, and CQC/CQA of all materials for the liner systems. Where applicable, these qualifications must be submitted by the Contractor to the Project Manager for review and approval. 1.3.2.1 Contractor Qualifications of the Contractor are specific to the construction contract and independent of this CQA/CQC Plan. 1.3.2.2 Geosynthetics Manufacturers Each Geosynthetics Manufacturer must satisfy the qualifications and must be prequalified and approved by the Design Engineer. The physical properties of each geosynthetic product must be certified by the geosynthetics manufacturer. Manufacturer’s certification must be approved by the CQA Consultant before the product is used. -8- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 1.3.2.3 Geosynthetics Installer The Geosynthetic Installer will be trained and qualified to install the geosynthetics components of the liner system. Each Geosynthetics Installer must be approved by the Design Engineer and the Geomembrane Manufacturer. 1.3.2.4 Construction Quality Assurance Consultant The CQA Consultant will act as the Owner’s CQA representative and will report to the Design Engineer. The CQA Consultant will perform conformance testing to satisfy the requirements of this CQA Plan, will observe the CQC work performed by the CQC Consultant, and will prepare the certification document incorporating both CQA and CQC test data. The CQA Consultant will have experience in the CQA/CQC aspects of landfill liner system construction and soils testing and be familiar with ASTM and other related industry standards. The activities of the CQA Consultant will be performed under the supervision of a registered Professional Engineer. 1.3.2.5 Construction Quality Control Consultant The CQC Consultant will be a party, independent from the Contractor. The CQC Consultant will be experienced with soils, including soil liners and geosynthetics, including geomembranes and geotextiles. The CQC Consultant will be approved by the Design Engineer. The activities of the CQC Consultant will be performed under the supervision of a registered Professional Engineer. 1.3.2.6 Geosynthetics Construction Quality Control Laboratory The Geosynthetics Construction Quality Control Laboratory is a subcontractor of the CQC Consultant and will have experience in testing geosynthetics and be familiar with ASTM, NSF, and other applicable test standards. The Geosynthetics CQC Laboratory will be capable of providing test results within 24 hours, or a reasonable time after, as agreed at the outset of the project, receipt of samples, and will maintain that standard throughout the installation. -9- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 1.4 SCOPE OF CQA/CQC The scope of this CQA/CQC Plan includes the CQA and CQC of the soils and geosynthetic components of the liner systems proposed for the Greenway Waste Solutions of Harrisburg, LLC Landfill. The CQA and CQC requirements for the selection, evaluation, and placement of the soils are included under this Plan. 1.5 UNITS In this CQA/CQC Plan, all properties and dimensions are expressed in United States units. 1.6 REFERENCES The CQA/CQC Plan includes references to the most recent version of the test procedures of the American Society of Testing and Materials (ASTM), the Geosynthetic Research Institute (GRI), and the Federal Test Method Standards (FTMS). 1.7 SITE AND PROJECT CONTROL To guarantee a high degree of quality during installation, clear and open channels of communication are essential. To that end, meetings are critical. 1.7.1 CQA/CQC Resolution Meeting Prior to field mobilization by the Contractor, a resolution meeting will be held. This meeting will include all parties then involved, including the Owner, CQA consultant, design engineer, contractor, and CQC consultant. The purpose of this meeting is to begin planning for coordination of tasks, anticipate any problems that might cause difficulties and delays in construction and review the CQA and CQC Plans with -10- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 all parties involved. It is important that the rules regarding testing, repair, etc., be known and accepted by all parties. This meeting should include the following activities: · Communicate to all parties any relevant documents; · Review critical design details of the project; · Review the seam layout drawing provided by the geomembrane/geosynthetic installer; · Review the site-specific CQA and CQC Plans; · Make any appropriate modifications to the CQA and CQC Plans to ensure that they specify all testing activities that are necessary; · Reach a consensus on the CQA/CQC quality control procedures, especially on methods for determining acceptability of the soils and geosynthetics; · Review the proposed liner system and protective cover system; · Decide the number of spare seaming units for geomembranes to be maintained on site by the geomembrane/geosynthetic installer (this number depends on the number of seaming crews and on the type of seaming equipment); · Select testing equipment and review protocols for testing and placement of general earthwork materials; · Confirm method for the soil liner material selection testing, acceptable zone determinations, and test strip installation; and · Confirm the methods for documenting and reporting, and for distributing documents and reports; and confirm the lines of authority and communication. The meeting will be documented and minutes will be transmitted to all parties. 1.7.2 Preconstruction Meeting A Preconstruction Meeting will be held at the site. At a minimum, the meeting will be attended by the Owner, design engineer, the CQA engineer, the CQC engineer, the Contractor, and the geosynthetic installers. -11- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 Specific topics considered for this meeting include: · Necessary modifications to the CQA/CQC Plan; · Review the responsibilities of each party; · Review lines of authority and communication; · Review methods for documenting and reporting, and for distributing documents and reports; · Establish protocols for testing; · Establish protocols for handling deficiencies, repairs, and retesting; · Review the time schedule for all operations; · Establish rules for writing on the geomembrane, i.e., who is authorized to write, what can be written, and in which color; · Outline procedures for packaging and storing archive samples; · Review panel layout and numbering systems for panels and seams; · Establish procedures for use of the fusion seaming apparatus, if applicable; · Finalize field cutout sample sizes; · Review seam testing procedures; · Review repair procedures; and · Establish soil stockpiling locations (if any). The meeting will be documented by a person designated at the beginning of the meeting, and minutes will be transmitted to all parties. -12- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 1.7.2 Daily and Weekly Progress Meetings A weekly progress meeting will be held between the CQA Engineer, Superintendent, the Contractor, the Soils Engineer, and any other involved parties. This meeting will discuss current progress, planned activities for the next week, and any new business or revisions to the work. The CQA Engineer will log any problems, decisions, or questions arising at this meeting in his daily reports. Any matter requiring action that is raised in this meeting will be reported to the appropriate parties. A daily meeting will be held between the CQA Engineer, the Contractor, and any other concerned parties. This meeting will discuss current progress, planned activities for the next shift, and any new business or revisions to the work. The CQA Engineer will log any problems, decisions, or questions arising at this meeting in his daily report. Any matter requiring action that is raised in this meeting will be reported to the appropriate parties. Meeting frequency will depend on the schedule of the project and the mutual agreement of all parties involved. 1.7.3 Problem or Work Deficiency Meetings A special meeting will be held when and if a problem or deficiency is present or likely to occur. At a minimum, the meeting will be attended by all interested parties, the design engineer, the contractor, and the CQA engineer. The purpose of the meeting is to define and resolve the problem or work deficiency as follows: · Define and discuss the problem or deficiency; · Review alternative solutions; and · Implement an action plan to resolve the problem or deficiency. The meeting will be documented by a person designated at the meeting, and minutes will be transmitted to affected parties. -13- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 2.0 SURVEYING CONSTRUCTION QUALITY CONTROL 2.1 INTRODUCTION Surveying of lines and grades is conducted on an ongoing basis during construction of the component liner and leachate collection system. CQC of the surveying is essential to ensure that slopes are properly constructed. The surveying conducted at the site shall be performed by the Contractor. 2.2 SURVEY CONTROL Permanent benchmarks and baseline control points are to be established for the site at locations convenient for daily tie-in. The vertical and horizontal controls for this benchmark will be established within normal land surveying standards. 2.3 SURVEYING PERSONNEL All surveying will be performed under the direct supervision of a Registered Professional Engineer (PE) or Licensed Land Surveyor (PLS) licensed in the State of North Carolina. 2.4 PRECISION AND ACCURACY A wide variety of survey equipment is available to meet the requirements of this project. The survey instruments used for this work should be sufficiently precise and accurate to meet the needs of the project. All survey instruments should be capable of reading to a precision of 0.01 feet and with a setting accuracy of 20 seconds (5.6 x 10-3 degrees). 2.5 LINES AND GRADES The following surfaces shall be surveyed to verify the lines and grades achieved during construction. The survey should at least include (as deemed appropriate by the Design Engineer and CQA Engineer): -14- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 · One or more construction baselines; · The edges of all surface breaks (e.g., toes, crests, ridges, and valleys); · Surface of the subgrade; · Location of all structures; · Location of all erosion control features including location of riser/barrels, apron outlets, overflow weirs, and channels/ditches; · Surface of the soil liner component; · Surface of the protective cover; · Location of force main piping and gravity main piping; · Inverts of sumps and manholes; · Top/toe of all berms, roads, and channels; · Location of edge of liner, anchor trenches tie-in seam to adjacent existing liner system (as applicable); and · Major patches of HDPE liner. The term location implies x, y, and z coordinates. Laser planes are highly recommended for achieving the correct lines and grades during construction of each surface. The use of laser planes or GPS by the contractor is highly recommended for achieving the correct lines and grades during construction of each surface. 2.6 FREQUENCY AND SPACING All surveying will be carried out immediately upon completion of a given installation to facilitate progress and avoid delaying commencement of the next installation. In addition, spot checks, as determined by the Surveyor or CQA Engineer, during construction may be necessary to assist the Contractor in complying with the required grades. The following spacing and locations will be provided by the CQC Surveyor, as a minimum, for survey points: -15- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 · Surfaces with slopes less than 10 percent will be surveyed on a square grid not wider than 100 feet; · On slopes greater than 10 percent, a square grid not wider than 100 feet will be used; but in any case, a line of survey points at the crest, midpoint, and toe of the slope will be taken; · A line of survey points no farther than 100 feet apart will be taken along any slope break (this will include the inside edge and outside edge of any bench on a slope); · A line of survey points not farther than 50 feet apart will be taken for all piping sued for leachate collection/detection lines, in particular, at the lateral intersection and line end points; · At a minimum, a line of survey points no farther than 50 feet apart will be taken for all cleanout risers; · At a minimum, every 100 feet along the perimeter of the primary and secondary liner system; and · At a minimum, a line of survey points no farther than 50 feet apart will be taken for all piping used for the leachate collection/detection lines. 2.7 THICKNESS MEASUREMENTS The Surveyor as a representative of the Contractor shall obtain top and bottom elevations of the soil liner at points on a maximum 75-foot grid and at all grade break lines prior to placement of the geomembrane liner system. The procedure for obtaining top and bottom elevations of the soil liner shall be agreed to by the CQA Engineer and Design Engineer prior to construction. The Surveyor shall review the survey information with the Contractor to ensure that the survey demonstrates compliance with the approved Drawings. The Contractor is responsible for identifying and reporting to the CQA Engineer any areas of non-compliance evidenced by the survey and for repairing such areas. The CQA engineer and contractor shall review the thickness measurements of the soil liner component prior to placement of the geomembrane liner. -16- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 2.8 TOLERANCES Except for liner components where no minus tolerances are acceptable, the following are maximum tolerances for survey points: · On surfaces, the maximum tolerances shall be 0.1 foot. This tolerance must be set to the record elevation of the surface below it and not the design elevation; · On piping for leachate collection/detection lines, the maximum tolerance shall be 0.02 feet. This tolerance must be set to the record elevation of the surface below it and not the design elevation; and · On cleanout risers, the tolerance shall be 0.1 feet. This tolerance must be set to the record elevation of the surface below it and not the design elevation. 2.9 DOCUMENTATION All field survey notes will be retained by the Surveyor. The results from the field surveys will be documented on a set of Survey Record (As-Built) Drawings signed and sealed by a registered professional engineer or professional land surveyor licensed in the State of North Carolina for submittal to the CQA engineer. The Contractor shall certify to the CQA engineer and design engineer that the results of the survey demonstrates compliance with the Contract Documents. These drawings shall, at a minimum, show the information surveyed in Subsection 2.5 through Subsection 2.7 of this CQA/CQC Plan. The surveys shall depict the information in a topographic format and illustrate actual data points. For thickness verification, a table shall be compiled by the CQC surveyor or contractor containing the following information for each point. · Proposed subgrade elevation; · Actual subgrade elevation; · Subgrade deviation; · Proposed soil liner elevation; · Actual soil liner elevation; · Soil liner thickness; -17- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 · Elevation deviation; · Proposed final elevation; · Actual final elevation; · Thickness; and · Elevation Deviation. Any deviations in elevation or thickness outside the tolerances of the approved Drawings shall be corrected. -18- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 3.0 SOILS CONSTRUCTION QUALITY ASSURANCE AND CONSTRUCTION QUALITY CONTROL 3.1 INTRODUCTION This section of the CQA/CQC Plan addresses the soil components of the liner system and outlines the soils CQA/CQC program to be implemented with regard to materials confirmation, laboratory test requirements, field test requirements, and resolution of problems. 3.2 EARTHWORK CONSTRUCTION 3.2.1 Subgrade The subgrade material below the controlled fill will be prepared by the Contractor prior to the placement of fill. The Soils Engineer will provide density testing of the pre-fill subgrade. The CQA Engineer will observe proof rolling by Contractor, review the density test data provided by the Soils Engineer, and provide verification that the pre-fill subgrade is acceptable. The CQA Engineer may conduct confirmation density testing as deemed appropriate. 3.2.2 Structural/Controlled Fill The Contractor shall place fill; the Soils Engineer shall provide testing of the controlled fill material; and, the CQA Engineer will provide confirmatory testing of the controlled fill as deemed appropriate. -19- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 3.3 SOIL LINER SYSTEM 3.3.1 Soil Liner Subgrade Testing by the Soils Engineer; observed by CQA Engineer. The subgrade material below the subbase is composed of controlled fill and in-situ soils. The surface of the subgrade will be prepared prior to the construction of the soil liner layer. The CQA Engineer will visually examine the surface of the subgrade with the Soils Engineer to verify that any potentially deleterious materials have been removed. 3.3.2 Soil Liner Material The soil liner material shall be placed and compacted in accordance with approved Drawings. The Soil Engineer, as a representative of the Contractor, shall conduct field density, moisture, hydraulic conductivity, Atterberg limits, and percent fines testing of the soil materials. The CQA Engineer shall provide confirmatory test at approximately 10 percent of the quality control test locations. The frequency of CQA testing shall be determined in the field based on the variability of materials. Thickness measurement shall be conducted by the Contractor and observed by the CQA Engineer. Survey thickness measurement shall be performed by the Contractor in accordance with Subsection 2.7. 3.4 SOILS TESTING 3.4.1 Test Methods All testing used to evaluate the suitability or conformance of soils materials will be carried out in accordance with the standards of each test method. -20- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 3.4.2 Soils Testing Requirements The soil testing required for construction conformance and quality assurance testing must include, at a minimum, four density and thickness tests per acre and one permeability test per acre for the soil liner system. The actual frequency of construction quality assurance (CQA) testing required will be determined by the CQA Engineer, in light of the potential variability of materials at the site. 3.5 SOILS CONSTRUCTION QUALITY ASSURANCE AND CONSTRUCTION QUALITY CONTROL Soils CQA/CQC will be performed on all components of the liner construction. Construction evaluation testing will consist of: (1) monitoring the work; and (2) laboratory and field tests. Laboratory tests will be conducted on samples taken at the borrow source, stockpile, and during the course of the work prior to construction. Field tests will be conducted during the course of the work. 3.5.1 Monitoring The CQA Engineer shall monitor and document the construction of all components. Monitoring the construction work for the cap subgrade, the soil component of the liner system includes the following: · Observing CQC testing to determine the water content and other physical properties of the soil component of the subbase and soil component of the liner system during compaction and compilation of the data; · Monitoring the loose thickness of lifts as placed; · Monitoring the action of the compaction and/or heavy hauling equipment on the construction surface (i.e., penetration, pumping, cracking, etc.); and · Monitoring the number of passes used to compact each lift. 3.5.2 Laboratory and Field Tests -21- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 At locations where the field testing of the subgrade indicates densities or moisture content have failed, the failing area will be reworked. Reworking includes scarifying the area, adjusting the moisture content, and recompacting. Equally acceptable is removal of the non-compliance fill and replacement with new fill material. Hydraulic conductivity (permeability) evaluations will be conducted on all materials proposed for the soil liner system. Hydraulic conductivity evaluations will be performed in the laboratory on the following: · Samples of the materials for soil liner component obtained from the borrow source and/or stockpile for materials selection; and · If necessary, samples can be obtained from the soil liner component during construction. For correlation, these samples should be taken in the vicinity of a field density test location. 3.5.3 Construction Quality Control and Quality Assurance Testing Frequency Construction Quality Control testing will be conducted by the Soils Engineer in conjunction with the CQA testing by the CQA Engineer or as directed by the Owner or the CQA Consultant. Documentation and reporting of test results will be in accordance with the requirements identified in this CQA/CQC Plan. Preconstruction testing will be conducted on material samples obtained from the borrow source and/or stockpile. Preconstruction testing will consist of material evaluation tests as described in Subsection 3.3 of this section of the CQA/CQC Plan. Construction Quality Control testing will be conducted on samples taken from the material during the course of the work. Routine testing frequencies for material evaluations and construction quality evaluation are presented in the project specifications. Sampling locations will be selected by the CQA Engineer. During construction, the frequency of testing may be increased at the discretion of the Owner or the CQA Engineer when visual observations of construction performance indicate a potential problem. Additional testing for suspected areas will be considered when: · The rollers slip during rolling operation; · The lift thickness is greater than specified; -22- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 · The fill material is at an improper moisture content; · Fewer than the specified number of roller passes are made; · Dirt-clogged rollers are used to compact the material; · The rollers may not have used optimum ballast; · The fill materials differ substantially from those specified; and · The degree of compaction is doubtful. 3.5.4 Perforations in Soil Liner Perforations that must be filled will include, but not be limited to, the following: · Nuclear density test probe locations; · Permeability sampling locations; and · Thickness checks. Unless otherwise noted, or as directed by the Owner, all perforations of the subbase by probes or sample tubes will be backfilled. 3.5.5 Deficiencies If a defect is discovered in the earthwork product, the CQA Engineer will immediately determine the extent and nature of the defect. If the defect is indicated by an unsatisfactory test result, the CQA Engineer will determine the extent of the deficient area by additional tests, observations, a review of records, or other means that the CQA Engineer deems appropriate. If the defect is related to adverse site conditions, such as overly wet soils or surface desiccation, the CQA Engineer will define the limits and nature of the defect. 3.5.5.1 Notification After determining the extent and nature of a defect, the CQA Engineer will notify the Owner and Contractor and schedule appropriate retests when the work deficiency is corrected. -23- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 3.5.5.2 Repairs and Retesting The Contractor will correct the deficiency to the satisfaction of the CQA Engineer. If a project criterion cannot be met, or unusual weather conditions hinder work, then the CQA Engineer will develop and present to the Owner suggested solutions for his approval. All retests recommended by the CQA Engineer must verify that the defect has been corrected before any additional work is performed by the Contractor in the area of the deficiency. The CQA Engineer will also verify that all installation requirements are met and that all submittals are provided. -24- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 4.0 GEOMEMBRANE LINER CONSTRUCTION QUALITY ASSURANCE 4.1 GEOMEMBRANE MANUFACTURER’S CERTIFICATION AND CQA CONFORMANCE TESTING 4.1.1 Geomembrane Manufacturer’s Certification Compliance testing will be performed by the Geomembrane Manufacturer to demonstrate that the product meets the manufacturers’ quality control and conformance test minimum standards for geomembrane specifications. The CQA Engineer for purposes of conformance evaluation may perform additional testing. If the results of the Geomembrane Manufacturer’s and the CQA Engineer’s testing differ, the testing will be repeated by the CQA Engineer’s laboratory, and the Geomembrane Manufacturer will be allowed to monitor this testing. The results of this latter series of tests will prevail, provided that the applicable test methods have been followed. 4.1.1.1 Raw Material Prior to the installation of any geomembrane material, the Geomembrane Manufacturer will provide the CQA Engineer with the following information as a bound document with the individual sections clearly identified: · The origin (Resin Supplier’s name and resin production plant), identification (brand name and number), and production date of the resin; · A copy of the quality control certificates issued by the Resin Supplier; · Reports on the tests conducted by the Geomembrane Manufacturer to verify the quality of the resin used to manufacture the geomembrane rolls assigned to the project; and · A statement that the percentage of reclaimed polymer added to the resin. The CQA Engineer will review these documents and report any discrepancies with the above requirements to the Design Engineer. 4.1.1.2 Geomembrane Manufacturing -25- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 Prior to the installation, the Geomembrane Manufacturer will provide the Contractor and the CQA Engineer with the following: · A properties sheet including, at a minimum, all specified properties, or equivalent; · The sample procedure and results of testing; and · A certification that property values given in the properties sheet are minimum average roll values and are guaranteed by the Geomembrane Manufacturer. The CQA Engineer will review these documents and verify that: · The reported property values certified by the Geomembrane Manufacturer meet all of the project requirements; · The measurements of properties by the Geomembrane Manufacturer are properly documented and that the test methods used are acceptable; and · Report any discrepancies with the above requirements to the Design Engineer. 4.1.1.3 Rolls and Sheets Prior to shipment, the Geomembrane Manufacturer will provide the CQA Engineer with a quality control certificate for each roll of geomembrane provided. The quality control certificate will be signed by a responsible party employed by the Geomembrane Manufacturer, such as the Production Manager. The quality control certificate will include: · Roll numbers and identification; and · Sampling procedures and results of quality control tests—as a minimum, results will be given for thickness, tensile characteristics and tear resistance, evaluated in accordance with methods approved by the engineer. -26- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 The quality control certificates will be bound and included as a part of the report required in Section 4.1.1.1. The CQA Engineer will: · Verify that the quality control certificates have been provided at the specified frequency and that each certificate identified the rolls or sheets related to is; · Review the quality control certificates and verify that the certified roll or sheet properties meet the project requirements; and · Report any discrepancies with the above requirements to the Design Engineer. 4.2 GEOMEMBRANE INSTALLATION 4.2.1 Transportation, Handling, and Storage The CQA Engineer will verify that: · Handling equipment used on the site is adequate, meets manufacturer’s recommen- dations, and does not pose any risk of damage to the geomembrane; and · The Geomembrane Installer’s personnel handle the geomembranes with care. Upon delivery at the site, the CQA Engineer will conduct a surface observation of all rolls and sheets for defects and damage. This examination will be conducted without unrolling rolls unless defects or damages are found or suspected. The CQA Engineer will indicate to the Design Engineer: · Any rolls, or portions thereof, that should be rejected and removed from the site because they have severe flaws; and · Any rolls that have minor repairable flaws. Refer to ASTM D4873 for detailed methods. -27- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 The CQA Engineer will document that the Contractor’s storage of the geomembrane provides adequate protection against moisture, dirt, shock, and other sources of damage or contamination. 4.2.2 Earthwork 4.2.2.1 Surface Preparation The CQC Engineer and the Geomembrane Installer will certify in writing that the surface on which the geomembrane will be installed meets line and grade, and the surface preparation. The certificate of acceptance will be given by the CQC Engineer prior to commencement of geomembrane installation in the area under consideration. The CQA Engineer will give a copy of this certificate to the Design Manager. To ensure a timely covering of the soil liner surface, the Design Engineer may allow Subgrade acceptance in areas as small as one acre. After the supporting soil has been accepted by the Geomembrane Installer, then the Design Engineer will ensure that the supporting soil is repaired. 4.2.2.2 Anchorage System The CQA Engineer will verify that anchor trenches have been constructed and backfilled according to approved Drawings. 4.2.3 Geomembrane Placement 4.2.3.1 Field Panel Identification The CQA Engineer will document that the Geomembrane Installer labels each field panel with an “identification code” (number or letter-number consistent with the layout plan) agreed upon by the CQC Consultant, Geomembrane Installer, and the CQA Engineer at the CQA/CQC Preconstruction Meeting, Section 1.7.2. -28- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 The Geomembrane Installer will establish a table or chart showing correspondence between roll numbers and field panel identification codes. This documentation shall be submitted to the CQA Engineer weekly for review and verification. The field panel identification code will be used for all quality control and quality assurance records. 4.2.3.2 Field Panel Placement 4.2.3.2.1 Location The CQA Engineer will verify that field panels are installed at the location indicated in the Geomembrane Installer’s layout plan, as approved or modified in Section 4.2.3.1. 4.2.3.2.2 Installation Schedule The CQA Engineer will evaluate every change in the schedule proposed by the Geomembrane Installer and advise the Design Engineer on the acceptability of that change. The CQA Engineer will verify that the condition of the supporting soil has not changed detrimentally during installation. The CQA Engineer will record the identification code, location, and date of installation of each field panel. 4.2.3.2.3 Placement of Geomembrane The CQA Engineer will verify that restrictions on placement of geomembrane are fulfilled. Additionally, the CQA Engineer will verify that the supporting soil has not been damaged by weather conditions. The CQA Engineer will inform the Design Engineer if the above conditions are not fulfilled. -29- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 4.2.3.2.4 Damage The CQA Engineer will visually observe each panel, after placement and prior to seaming, for damage. The CQA Engineer will advise the Design Engineer which panels, or portions of panels, should be rejected, repaired, or accepted. Damaged panels or portions of damaged panels that have been rejected will be marked and their removal from the work area recorded by the CQA Engineer. . As a minimum, the CQA Engineer will document that: · The panel is placed in such a manner that it is unlikely to be damaged; and · Any tears, punctures, holes, thin spots, etc., are either marked by the Geomembrane Installer for repair or the panel is rejected. 4.2.4 Field Seaming 4.2.4.1 Seam Layout The Geomembrane Installer will provide the CQA Engineer with a seam layout drawing, i.e. a drawing of the facility to be lined showing all expected seams. The CQA Engineer and Design Engineer will review the seam layout drawing and verify that it is consistent with the accepted state of practice and this CQA Plan. In addition, no panels not specifically shown on the seam layout drawing may be used without the Design Engineer’s prior approval. A seam numbering system compatible with the panel numbering system will be agreed upon at the Resolution and/or Preconstruction Meeting, Section 1.7. An on-going written record of the seams and repair areas shall be maintained by the Geomembrane Installer with weekly review by the CQA Engineer. -30- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 4.2.4.2 Requirements of Personnel The Geomembrane Installer will provide the CQA Engineer with a list of proposed seaming personnel and their experience records. This document will be reviewed by the Design Engineer and the CQA Engineer for compliance. 4.2.4.3 Seaming Equipment and Products Field seaming processes must comply with industry standards. Proposed alternate processes will be documented and submitted to the CQA Engineer for his approval. Only seaming apparatus, which have been specifically approved by make and model, will be used. The CQA Engineer will submit all documentation to the Design Engineer for his concurrence. 4.2.4.4 Nondestructive Seam Continuity Testing The Geomembrane Installer will nondestructively test all field seams over their full length using appropriate test methods. The CQA Engineer shall periodically observe the nondestructive testing to ensure conformance with this CQA Plan. For approximately 10 percent of the noncomplying tests, the CQA Engineer will: · Observe continuity testing of the repaired areas performed by the Geomembrane Installer; · Confirm the record location, date, test unit number, name of tester, and compile the record of testing provided by the Geomembrane Installer; · Provide a walkthrough inspection of all impacted seam areas and verify that the areas have been tested in accordance with the CQA Plan; and · Verify that the Geomembrane Installer has marked repair areas with the appropriate color-coded marking pencil. 4.2.4.5 Destructive Seam Testing -31- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 Destructive seam tests will be performed by the CQC consultant. The CQA Engineer will perform conformance tests on a minimum of 10 percent of the CQC destructive seam test samples obtained. Additional destructive seam tests may be required at the CQA Engineer’s discretion. Selection of such locations may be prompted by suspicion of contamination, excessive grinding, off center and/or offset seams, or any other potential cause of imperfect seaming. 4.2.4.6 Geosynthetics Construction Quality Control Laboratory Testing Destructive test samples will be packaged and shipped by the CQC Consultant in a manner that will not damage the test sample. The Project Manager will be responsible for storing the archive samples. These procedures will be fully outlined at the Resolution Meeting, Section 1.7.1. Test samples will be tested by the Geosynthetics CQC Laboratory. Conformance testing will include “Seam Strength” and “Peel Adhesion” (ASTM D6392 using one-inch strips and a strain rate of two inches per minute) in accordance with ASTM D4437. All geomembrane destructive test samples that fail shall be saved and sent to the CQA Engineer for observation. The Geosynthetics CQC Laboratory will provide preliminary test results no more than 24 hours after they receive the samples. The CQA Engineer will review laboratory test results as soon as they become available. 4.2.4.7 Defining Extent of Destructive Seam Test Failure All defective seam test failures must be bounded by seam tests from which destructive samples passing laboratory tests have been taken. The CQC Consultant will document repair actions taken in conjunction with all destructive seam test failures. 4.2.5 Defects and Repairs All seam and nonseam areas of the geomembrane will be examined by the CQC Consultant for identification of defects, holes, blisters, undispersed raw materials, and any sign of contamination -32- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 by foreign matter. Each suspected location, both in-seam and nonseam areas, will be nondestructively tested. Each location that fails the nondestructive testing will be marked by the CQC Consultant and repaired by the Geomembrane Installer. Repair procedures will be in accordance with procedures agreed to by the Design Engineer in the Preconstruction meeting. The CQA Engineer will observe all repair procedures and advise the Project Manager of any problems. 4.2.6 Liner Systems Acceptance The Geomembrane Installer and the Geosynthetic Manufacturers will retain all ownership and responsibility for the geosynthetics in the landfill cell until acceptance by the Owner. The geomembrane component of the liner system will be accepted by the Owner when: · The installation is finished; · Verification of the adequacy of all seams and repairs, including associated testing, is complete; · CQC consultant provides the CQA Engineer and Design Engineer with a final copy of the nondestructive test documentation, repair information, and as-built drawings; · CQA Engineer furnishes the Design Engineer with certification that the geomembrane was installed in accordance with the Geosynthetic Manufacturer’s recommendations as well as the Plans; · All documentation of installation is completed including the CQA Engineer’s final report; and · Certification by the CQA Engineer, including Record Drawing(s), sealed by a Professional Engineer registered in North Carolina, has been received by the Design Engineer. The CQA Engineer will certify that the installation has proceeded in accordance with this CQA Plan for the project except as noted to the Design Manager. 4.2.8 Materials in Contact with Geomembranes -33- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 The quality assurance procedures indicated in this Subsection are only intended to assure that the installation of these materials does not damage the geomembrane. Although protective geosynthetics and geotextiles have been incorporated into the liner system, all reasonable measures to protect the geomembrane and provide additional quality assurance procedures are necessary to ensure proper performance. 4.2.8.1 Sumps and Appurtenances The CQA Engineer will verify that: · Installation of the geomembrane in appurtenance areas, and connection of the geomembrane to appurtenances have been made; · Extreme care is taken while seaming around appurtenances since neither nondestructive nor destructive testing may be feasible in these areas; · The geomembrane has not been visibly damaged while making connections to appurtenances; · The installation of the geomembranes shall be exercised so as not to damage sumps; and · The CQA Engineer will inform the Design Engineer if the above conditions are not fulfilled. -34- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 5.0 GEOTEXTILE MATERIAL AND INSTALLATION QUALITY ASSURANCE 5.1 MANUFACTURING The Contractor will provide the CQA Engineer with a list of guaranteed “minimum average roll value” properties (as defined by the Federal Highway Administration), for the type of geotextile to be delivered. The Contractor will also provide the CQA Engineer with a written certification from the Geotextile Manufacturer that the materials actually delivered have “minimum average roll value” properties that meet or exceed all property values guaranteed for that type of geotextile. The CQA Engineer will examine all manufacturer certifications to ensure that the property values listed on the certifications meet or exceed those specified for the particular type of geotextile. Any deviations will be reported to the Design Engineer. The inspection methods, handling techniques, and property values identified in this section for the filter geotextile shall also apply to geotextile portion of the geocomposite drainage media which will be heat bonded to the geonet (See Section 7.0 for more details). 5.2 LABELING The Geotextile Manufacturer will identify all rolls of geotextile. The CQA Engineer will examine rolls upon delivery and any deviation from the above requirements will be reported to the Design Engineer. 5.3 SHIPMENT AND STORAGE During shipment and storage, the geotextile will be protected as required by manufacturer’s recommendations. The CQA Engineer will observe rolls upon delivery at the site and any deviation from the above requirements will be reported to the Design Engineer. 5.4 HANDLING AND PLACEMENT -35- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 The Geosynthetic Installer will handle all geotextiles in such a manner as in accordance with industry standards. Any noncompliance will be noted by the CQA Engineer and reported to the Design Engineer. 5.5 SEAMS AND OVERLAPS All geotextiles will be seamed or overlapped as approved by the CQA Engineer and Design Engineer. 5.6 REPAIR Any holes or tears in the geotextile will be repaired. The CQA Engineer will observe any repair and note any noncompliance with the above requirements and report them to the Design Engineer. -36- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 6.0 HIGH DENSITY POLYTHYLENE PIPE, MANHOLES, AND FITTINGS CONSTRUCTION QUALITY ASSURANCE 6.1 MATERIAL REQUIREMENTS All HDPE manholes, pipe, and fittings shall be produced in accordance with approved Drawings. 6.2 MANUFACTURER Prior to the installation of HDPE manholes or pipes, the Manufacturer will provide to the Contractor and the CQA Engineer the following: · A properties sheet including, at a minimum, all specified properties; · A list of quantities and descriptions of materials other than the base resin which comprise the pipe; · The sampling procedure and results of testing; and · A certification by the HDPE Pipe Manufacturer that values given in the properties sheet are minimum values and are guaranteed by the HDPE Pipe Manufacturer. The CQA Engineer will review these documents and verify that: · The property values certified by the HDPE Pipe Manufacturer meet all of the project requirements; · The measurements of properties by the HDPE Pipe Manufacturer are properly documented and that the test methods are acceptable; and · Report any discrepancies with the above requirements to the Design Engineer. -37- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 6.2.1 Verification and Identification Prior to shipment, the Contractor will provide the Design Engineer and the CQA Engineer with a quality control certification for each lot/batch of the HDPE pipe provided. The quality control certificate will be signed by a responsible party employed by the HDPE Pipe Manufacturer, such as the Production Manager. The quality control certificate will include: · Lot/batch number and identification; and · Sampling procedures and results of quality control tests. The CQA Engineer will: · Verify that the quality control certificates have been provided at the specified frequency for all lots/batches of pipe, and that each certificate identifies the pipe lot/batch related to it; and · Review the quality control certificates and verify that the certified properties meet the project requirements. 6.3 NONDESTRUCTIVE TESTING 6.3.1 Nondestructive Testing of Joints All nonperforated HDPE joints must be nondestructively tested. These pipe joints will be tested using the pressure test. Other nondestructive test methods may be used only when: · The Geosynthetic Installer can prove its effectiveness; · The method is approved by the Pipe Manufacturer; · The method is approved by the Design Engineer; and · The Design Engineer and the CQA Engineer will verify the effectiveness and validity of the alternative test method. The CQA Engineer will report any nonconformance of testing methods to the Design Engineer. -38- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 7.0 GEOCOMPOSITE CONSTRUCTION QUALITY ASSURANCE 7.1 MATERIAL REQUIREMENTS All geocomposite shall be manufactured in accordance with approved Drawings. 7.2 MANUFACTURING The Geocomposite Manufacturer will provide the Contractor with a written certification, signed by a responsible party, that the geonets actually delivered have properties that meet or exceed the guaranteed properties. The CQA Engineer will examine all manufacturer’s certifications to ensure that the property values listed on the certifications are met. Any deviations will be reported to the Design Engineer. 7.3 LABELING The Geonet Manufacturer will identify all rolls of geocomposite. The CQA Engineer will examine rolls upon delivery and any deviation from the above requirements will be reported to the Design Engineer. 7.4 SHIPMENT AND STORAGE Geocomposite cleanliness is essential to its performance. The CQA Engineer will examine rolls upon delivery and any deviation from the above requirements will be reported to the Design Engineer. The CQA Engineer will verify that geocomposites are free of dirt and dust just before installation. The CQA Engineer will report the outcome of this verification to the Design Engineer; and, if the geocomposites are judged dirty or dusty, they will be washed by the Geocomposite Installer prior to installation. -39- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 Washing operations will be observed by the CQA Engineer and improper washing operations will be reported to the Design Engineer. 7.5 HANDLING AND PLACEMENT The Geocomposite Installer will handle all geocomposites. The CQA Engineer will note any noncompliance and report it to the Design Engineer. 7.6 JOINING Adjacent geocomposites will be joined according to construction Drawings. The CQA Engineer will note any noncompliance and report it to the Design Engineer. 7.7 REPAIR Any holes or tears in the geocomposite will be repaired. The CQA Engineer will observe any repair, note any noncompliance with the above requirements, and report them to the Design Engineer. 7.8 PLACEMENT OF SOIL MATERIALS All soil materials placed over the geocomposite should be placed so as to ensure: · The geocomposite and underlying geomembrane are not damaged · Minimal slippage of the geocomposite on the underlying geomembrane occurs; and · No excess tensile stresses occur. Any noncompliance will be noted by the CQA Engineer and reported to the Design Engineer. -40- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 8.0 CONSTRUCTION QUALITY ASSURANCE DOCUMENTATION 8.1 DOCUMENTATION The CQA Engineer will provide the Owner with the daily and weekly reports including signed descriptive remarks, data sheets, and logs to verify that all monitoring activities have been carried out. The CQA Engineer will also maintain at the job site a complete file of Plans, Reports, and Specifications, a CQA/CQC Plan, checklists, test procedures, daily logs, and other pertinent documents. 8.2 RECORD KEEPING Standard reporting procedures will include preparation of a daily report which, at a minimum, will consist of: (1) field notes, including memoranda of meetings and/or discussions with the Contractor; (2) observation logs and testing data sheets; and (3) construction problem and solution data sheets. This information will be submitted weekly to and reviewed by the CQA Engineer. The daily report must be completed at the end of each shift prior to leaving the site and submitted to the CQA Engineer. The weekly reports should summarize the major events that occurred during that week. Critical problems that occur shall be communicated verbally immediately as well as being included in the reports. 8.2.1 Memorandum of Discussion with Contractor A daily report will be prepared summarizing discussions between the CQA Engineer and Contractor. At a minimum, the daily report will include the following information: · Date, project name, location, and other identification; · Name of parties to discussion at the time; · Relevant subject matter or issues; -41- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 · Activities planned and schedule; and · Signature of the CQA Engineer. 8.2.2 Observation Logs and Testing Data Sheets Observation logs and testing data sheets will be prepared daily by the CQA Engineer. At a minimum, these logs and data sheets will include the following information: · An identifying sheet number for cross referencing and document control; · Date, project name, location, and other identifications; · Data on weather conditions; · A reduced-scale site plan showing all proposed work areas and test locations; · Descriptions and locations of on-going construction; · Locations where tests and samples were taken; · A summary of test results; · Calibrations or recalibrations of test equipment and actions taken as a result of recalibration; · Off-site materials received, including quality verification documentation; · Decisions made regarding acceptance of units or work and/or corrective actions to be taken in instances of substandard quality; and · The CQA Engineer’s signature. 8.2.3 Construction Problem and Solution Data Sheets Sheets describing special construction situations will be cross-referenced with specific observation logs and testing data sheets, and must include the following information where available: · 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; -42- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 · Final results of any responses; · Any measures taken to prevent a similar situation from occurring in the future; and · The signature of the CQA Engineer and signature of the Design Engineer indicating concurrence. The Design Engineer will be made aware of any significant recurring non-conformance with the Specifications. The Design Engineer will then determine the cause of the non-conformance and recommend appropriate changes in procedures or specification. When this type of evaluation is made, the results will be documented; and any revisions to procedures or Specifications will be approved by the Owner and Design Engineer. 8.3 PHOTOGRAPHIC REPORTING DATA Photographic reporting data sheets, where used, will be cross-referenced with observation logs and testing data sheets and/or construction problem and solution data sheets. Photographs shall be taken at regular intervals during the construction process and in all areas deemed critical. These photographs will serve as a pictorial record of work progress, problems, and mitigation activities. The basic file will contain color prints, and negatives will also be stored in a separate file in chronological order. These records will be presented to the Design Engineer upon completion of the project. In lieu of photographic documentation, videotaping may be used to record work progress, problems, and mitigation activities. The Design Engineer may require that a portion of the documentation be recorded by photographic means in conjunction with videotaping. 8.4 DESIGN AND/OR SPECIFICATION CHANGES Design and/or specification changes may be required during construction. In such cases, the CQA Engineer will notify the Design Engineer. The Design Engineer will then notify the appropriate agency, if necessary. -43- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 Design and/or specification changes will be made only with the written agreement of the Design Engineer and will take the form of an addendum. All design changes shall include a detail (if necessary) and state which detail it replaces in the plans. 8.5 PROGRESS REPORTS The CQA Engineer will prepare a summary progress report each week or at time intervals established at the pre-construction meeting. As a minimum, this report will include the following information: · A unique identifying sheet number for cross-referencing and document control; · The date, project name, location, and other information; · A summary of work activities during progress reporting period; · A summary of construction situations, deficiencies, and/or defects occurring during the progress reporting period; · A summary of test results, failures, and retests; and · A signature of the CQA Engineer. 8.6 SIGNATURE AND FINAL REPORT At the completion of each major construction activity at the landfill unit, all required forms, observation logs, field and laboratory testing data sheets including sample location plans, construction problems, and solution data sheets will be certified by the CQA Engineer. The Design Engineer will also provide a certification that construction was completed in accordance with: (A) the CQA plan, (B) the conditions of the permit to construct, (C) the requirements of this Rule, and (D) acceptable engineering practices. The CQA Engineer will also provide summaries of all the data listed above with the report. The Record Drawings will include scale drawings depicting the location of the construction and details pertaining to the extent of construction (e.g., depths, plan dimensions, elevations, soil component thicknesses, etc.). All surveying and base maps required for development of the -44- CQA/CQC Plan Greenway Waste Solutions of Harrisburg, LLC Landfill September 2017 Record Drawings will be done in accordance with this CQA Plan. These documents will be certified by the Contractor and delivered to the CQA Engineer and included as part of the CQA documentation. 8.7 STORAGE OF RECORDS All handwritten data sheet originals, especially those containing signatures, should be stored by the CQA Engineer in a safe repository on site. Other reports may be stored by any standard method that will allow for easy access. APPENDIX G EXPANSION AREA 1 APPROVED PERMIT APPLICATION NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT CONSTRUCTION PLAN APPLICATION AND COMPOSTING FACILITY PERMIT APPLICATION FOR THE HIGHWAY 49 C&D LANDFILL PREPARED FOR: HIGHWAY 49 C&D LANDFILL, INC 19109 WEST CATAWBA AVENUE SUITE 200 CORNELIUS, NORTH CAROLINA 28031 PREPARED BY: BP BARBER 5900 NORTHWOODS BUSINESS PARKWAY, SUITE O CHARLOTTE, NORTH CAROLINA 28269-7511 PROJECT NO. 05185-H49 REVISED AUGUST 2010 Highway 49 C&D Landfill, LLC Highway 49 C&D Landfill Phase 1 Construction Plan Application BP Barber i TABLE OF CONTENTS CONSTRUCTION PLAN APPLICATION FOR C&D LANDFILL EXPANSION PHASE I TABLE OF CONTENTS ................................................................................................................................................ I 1.0 PROJECT DESCRIPTION .................................................................................................................................. 1 2.0 FACILITY PLAN .................................................................................................................................................. 1 2.1 FACILITY DRAWINGS ........................................................................................................................................... 1 2.1.1 Site Development ....................................................................................................................................... 1 2.1.2 Landfill Operations ................................................................................................................................... 1 2.2 FACILITY REPORT ................................................................................................................................................ 2 2.2.1 Waste Stream ............................................................................................................................................. 2 2.3 LANDFILL CAPACITY ........................................................................................................................................... 2 3.0 ENGINEERING PLAN ......................................................................................................................................... 3 3.1 EROSION AND SEDIMENTATION CONTROL ........................................................................................................... 3 3.2 STORMWATER CONVEYANCE AND MITIGATION .................................................................................................. 3 3.3 STABILITY AND SETTLEMENT .............................................................................................................................. 4 4.0 CONSTRUCTION QUALITY ASSURANCE PLAN ........................................................................................ 5 5.0 OPERATIONS PLAN ........................................................................................................................................... 5 6.0 CLOSURE AND POST-CLOSURE PLAN ......................................................................................................... 5 6.1 CLOSURE ............................................................................................................................................................. 5 6.1.1 Closure Cap System ................................................................................................................................... 5 6.1.2 Construction of Cap System ...................................................................................................................... 6 6.1.3 Closure Schedule ....................................................................................................................................... 6 6.1.4 Closure Cost Estimate ............................................................................................................................... 7 6.2 POST-CLOSURE .................................................................................................................................................... 7 6.2.1 Post-Closure Maintenance ........................................................................................................................ 7 6.2.2 Post-Closure Monitoring and Corrective Action Plan .............................................................................. 8 6.2.3 Planned Use .............................................................................................................................................. 8 6.2.4 Post-Closure Cost Estimate ....................................................................................................................... 8 Highway 49 C&D Landfill, LLC Highway 49 C&D Landfill Phase 1 Construction Plan Application BP Barber 1 1.0 Project Description This Application for Permit to Construct for the Highway 49 C&D Landfill Expansion Phase I is being submitted by BP Barber on behalf of Highway 49 C&D Landfill, LLC. The Site Plan Application for this expansion to the existing facility was approved by the North Carolina Department of Environment and Natural Resources (NCDENR) on October 2, 2008. Currently, landfilling operations are on- going at a previously approved site adjacent to the west of the expansion area. This application meets the landfill design parameters, construction requirements, and design drawing requirements found in Section .0547 Subsection (3) of 15A NCAC 13B of the North Carolina Solid Waste Management Rules. This application package includes information regarding the site design, construction, operation, closure and post-closure, and monitoring plans. 2.0 Facility Plan This Facility Plan defines the comprehensive development of the property in accordance with Subparagraphs (d)(1), (d)(2), (e)(1), (e)(2), and (e)(3) of Rule .0537 of 15A NCAC 13B. 2.1 Facility Drawings 2.1.1 Site Development Appendix A consists of drawings which illustrate the site development prepared on topographical maps representative of existing site conditions. These drawings are consistent with the requirements of Subparagraph (d)(1) of Rule .0537 of 15A NCAC 13B. 2.1.2 Landfill Operations Appendix A consists of drawings as they relate to long-term operations of the facility consistent with Subparagraph (d)(2) of Rule .0537 15A NCAC 13B. Highway 49 C&D Landfill, LLC Highway 49 C&D Landfill Phase 1 Construction Plan Application BP Barber 2 2.2 Facility Report The following is a discussion of the characteristics of the waste received at the facility, an analysis of landfill capacity and soil resources, and special engineering features consistent with Subparagraph (e) of Rule .0537 of 15A NCAC 13B. 2.2.1 Waste Stream Waste that is generated from the construction, remodeling, repair, or demolition operations on pavement and buildings or structures will be accepted. The waste generation rate projected for this facility (based on the landfill’s historical rate of received waste) will be on the order of 420 tons/day (5.5 days/week) for an estimated annual total of 120,000 tons per year. The estimated disposal rate may vary due to population, industrial, and commercial growth within the region, recycling efforts, or availability of other landfills. The facility will service Cabarrus, Mecklenburg, Union, Stanly, and Rowan Counties. Waste segregation and screening procedures are presented in the Operations Plan in Appendix H. The facility will be operated with equipment owned by the landfill owner. At minimum, equipment will consist of a dozer, compactor, track hoe, motor grader, and a water truck. 2.3 Landfill Capacity Landfill capacity calculations were performed for all phases (1, 2 and 3) of the proposed expansion based on the proposed grading and closure plans using an anticipated annual disposal rate of 120,000 tons per year. The calculations (Appendix B) assume two (2) percent gross volume for weekly cover and account for a three (3) foot thick final cover system. The estimated gross capacity of the expansion is on the order of 3,100,000 cubic yards. This is based on an estimated gross capacity of 1,000,000 cubic yards for Phase 1; 1,000,000 cubic yards for Phase Highway 49 C&D Landfill, LLC Highway 49 C&D Landfill Phase 1 Construction Plan Application BP Barber 3 2; and 1,100,000 cubic yards for Phase 3. Based on approximate generation rates it is expected that the facility has approximately fifteen (15) years of operating life. It is estimated that 1,000,000 cubic yards of soil will be excavated (cut) for construction of the entire landfill expansion footprint, with approximately 180,000 cubic yards of soil required for the final cover system (leaving approximately 2,920,000 cubic yards available for waste placement and intermediate cover). Grading the floor for Phase 1 of the expansion will result in approximately 600,000 cubic yards of cut. Operation of Phase 1 will require an estimated 105,700 cubic yards of soil. 3.0 Engineering Plan 3.1 Erosion and Sedimentation Control The Erosion and Sedimentation Control Plan was developed to meet all requirements set forth by the Sedimentation Pollution Control Law (15A NCAC 4), and other requirements set forth by the NCDENR. All erosion and sedimentation control measures were designed based on a twenty-five (25) year, twenty-four (24) hour storm event occurring in Cabarrus County, North Carolina per the NCDENR Division of Waste Management-Solid Waste Program. Temporary measures to be used on the site are one (1) sediment basin and silt (sediment) fencing. These measures, along with permanent ditches, plunge pools, slope drains and seeding make up all erosion control measures to be utilized on the site. Calculations and corresponding references can be found in Appendix D and drawings can be found in Appendix A. 3.2 Stormwater Conveyance and Mitigation The Town of Harrisburg approved the request for a stormwater exemption in accordance with the Town of Harrisburg’s Stormwater Ordinance (see letter in Appendix E). Therefore the facility will not be required to implement structural Stormwater BMPs or prepare a stormwater impact statement. Stormwater will be Highway 49 C&D Landfill, LLC Highway 49 C&D Landfill Phase 1 Construction Plan Application BP Barber 4 transported by vegetative conveyances to the maximum extent possible. The permanent ditches designed for erosion control purposes will be used directly for stormwater conveyance. The ditches will be vegetated with at least ninety (90) percent landscaped cover at all times. In order to avoid failure due to high exit velocities from slope drains, a series of two (2) plunge pools have been designed—to be installed with the slope drains as part of the landfill closure. Slope drains, plunge pools and ditches are to be inspected every six (6) months or after every major storm event (1/2” or greater). 3.3 Stability and Settlement The landfill expansion requires soil to be cut in the entire footprint, including Phase I, in order to establish the proposed floor grades. Based on observed and proposed site conditions, two (2) cross-sections were chosen to evaluate the stability of the landfill in Phase I, and two (2) cross-sections were chosen to evaluate the stability of the entire expansion. Soil material properties used in the analysis were selected based on established engineering correlations with boring log information, including correlations from the text of Braja M. Das (Principles of Geotechnical Engineering, 6th Ed, 2006). Properties for the C&D waste materials were used based on tests performed at other C&D landfill sites in the Carolinas. The Modified Bishop’s method was used in calculating the factor of safety for circular failure surfaces. The chosen sections were evaluated for global stability and the stability of the support embankments. Please see Appendix C for complete stability report, corresponding calculations and model results. The stability of the final cover system soils depends on the shear strength properties and frictional resistance between the various soil layers (i.e. low permeability clay layer, protective layer). The stability of the cover soils was approximated using infinite slope methodology. Please see Appendix C for complete report and calculations. Foundation settlement was evaluated in the area anticipated to experience the maximum estimated subsidence under the proposed waste embankment due to Highway 49 C&D Landfill, LLC Highway 49 C&D Landfill Phase 1 Construction Plan Application BP Barber 5 maximum waste fill height, as well as areas to receive lesser waste fill heights including mid-slope and edge of the landfill. The magnitude of foundation settlement was estimated using Hough’s method for evaluating elastic compression. Please see Appendix C for complete report and calculations. 4.0 Construction Quality Assurance Plan The Construction Quality Assurance Plan was prepared in accordance with Rule .0541 of 15A NCAC 13B. Please see Appendix G for the entire Construction Quality Assurance Plan. 5.0 Operations Plan The facility will be operated in accordance with the Operations Plan located Appendix H. The Operations Plan was prepared by Brown and Caldwell, and is intended to meet the requirements of .0542 of 15A NCAC 13B. 6.0 Closure and Post-Closure Plan The following is a specific plan for the closure and post-closure life of the landfill that complies with the requirements Rule .0543 of 15A NCAC 13B. It will establish scheduling and documentation of closure and monitoring and maintenance of the facility following closure. 6.1 Closure 6.1.1 Closure Cap System The closure cap system is designed to minimize infiltration and erosion. In order to minimize infiltration, the cap system will consist of eighteen (18) inches of soil having a permeability less than or equal to the soils underlying the landfill, or no greater than 1.0 x 10-5 cm/sec, whichever is less. The low permeability layer will be installed in two (2) nine (9) inch lifts. To minimize erosion and to protect the low- permeability barrier from root penetration, eighteen (18) inches of earthen material Highway 49 C&D Landfill, LLC Highway 49 C&D Landfill Phase 1 Construction Plan Application BP Barber 6 that is capable of sustaining native plant growth will overlay the low-permeability layer. The vegetative layer will be installed in two (2) nine (9) inch lifts and seeded according to the details on the closure drawings (Appendix A). Also included in the closure drawings is the gas venting system. The locations of the passive gas vents are shown on the closure drawing, and a detail of the vent is included in the details of the drawings. 6.1.2 Construction of Cap System The post-settlement surface slopes will be a minimum of five (5) percent and a maximum of thirty-three (33) percent or three-to-one (3:1). The stability analysis of the proposed 3:1 closure slopes can be found in Appendix C. 6.1.3 Closure Schedule Prior to beginning closure activities, the Division will be notified of the intent to close the unit and place such notification in the operating record. No later than 30 days after the date the unit receives the known final receipt of waste, closure activities will commence unless an extension has been granted from the Division. The closure activities will be complete 180 days following the beginning of closure activities unless the Division grants an extension. Following closure of a unit, the Division will be notified that a certification signed by the project engineer verifying closure has been completed in accordance with the closure plan has been placed in the operating record. Following closure of the Construction and Demolition Landfill a notation on the deed to the facility property will be recorded with the local Register of Deeds office, or some other instrument that is normally examined during a title search, and a copy of the notation will be placed in the operating record. The notation will in perpetuity notify any potential purchaser that the land has been used as a Construction and Demolition Landfill and is restricted under the closure plan approved by the Division. Appendix B consists of calculations estimating the maximum inventory of waste to be harbored at the landfill facility. Highway 49 C&D Landfill, LLC Highway 49 C&D Landfill Phase 1 Construction Plan Application BP Barber 7 6.1.4 Closure Cost Estimate A summary of estimated cost for closure activities as required under Rule .0546 of 15A NCAC 13B can be found in Appendix F. 6.2 Post-Closure Following closure of each unit, post-closure care will be conducted for a period of thirty (30) years unless: • It is decreased by the Division because it has been demonstrated that a reduced period is sufficient to protect human health and the environment. • It is increased by the Division to protect human health and the environment. The owner, Highway 49 C&D Landfill, LLC’s representative, Mike Griffin will be responsible for the facility during the post-closure period. 6.2.1 Post-Closure Maintenance The final cover will be seeded, fertilized and mulched to provide a dense stand of grass consistent with the specification noted on the Erosion and Sediment Control Plan in Appendix A. The grass should not be mowed more than twice a year until dense vegetation is established. The final cover will be inspected for signs of settlement, erosion, vector damage, and bare spots on a quarterly basis. Additional inspections will be performed after large storm events. Depressions in the cover that show ponding will be re-graded as needed to promote positive drainage. Areas subject to re-grading or any bare spots will be reseeded in accordance with permanent seeding specification. Any deep-rooted vegetation will be removed so that deep rooted vegetation will not compromise the integrity of the final cover. Highway 49 C&D Landfill, LLC Highway 49 C&D Landfill Phase 1 Construction Plan Application BP Barber 8 6.2.2 Post-Closure Monitoring and Corrective Action Plan The Gas Monitoring Plan, Water Quality Monitoring Plan, and the Corrective Action Plan are included in the Design Hydrogeological Report, approved by NCDENR on February 4, 2010. 6.2.3 Planned Use Once the facility is closed in accordance with Rule .0543 of 15A NCAC 13B, the entire facility will be offered to the Town of Harrisburg for possible use as a park and recreation facility. 6.2.4 Post-Closure Cost Estimate A summary of estimated cost for post-closure activities as required under Rule .0546 of 15A NCAC 13B is included in Appendix F. Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber i TABLE OF CONTENTS 1.0 GENERAL PROVISIONS ...................................................................................................1 1.1 Project Description ......................................................................................................1 1.2 Site Requirements .......................................................................................................2 2.0 FACILITY DESIGN .............................................................................................................2 2.1 Site Development ........................................................................................................2 3.0 DESIGN REPORT................................................................................................................3 3.1 Design Capacity ..........................................................................................................3 3.2 Material Processing .....................................................................................................3 3.3 Temperature Monitoring .............................................................................................4 3.4 Temperature Control ...................................................................................................5 3.5 Service Area ................................................................................................................5 3.6 Equipment Requirements ............................................................................................6 4.0 CONTAINMENT AND ENVIRONMENTAL CONTROL SYSTEM ............................6 4.1 Groundwater Considerations ......................................................................................6 4.2 Controlling Nuisances and Vectors ............................................................................6 5.0 C&D LANDFILL DEVELOPMENT, GENERAL OPERATION AND MAINTENANCE ..................................................................................................................6 5.1 Plan and Permit Requirements ....................................................................................6 5.2 Hours of Operation .....................................................................................................7 5.3 Drop-Off Area .............................................................................................................7 5.4 Windrow Processing ...................................................................................................7 5.5 Adverse Weather Conditions ......................................................................................8 5.6 Flow Diagram .............................................................................................................8 5.7 Contingency Plan ........................................................................................................8 6.0 Facility Operation .................................................................................................................8 6.1 Training of Facility Personnel ....................................................................................8 6.2 Entrance ......................................................................................................................9 6.3 Access and Security ....................................................................................................9 6.4 Signs ..........................................................................................................................10 Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber ii 6.5 Waste Acceptance .....................................................................................................10 6.6 Dust, Litter, Odors, and Vectors ...............................................................................11 6.7 Landscaping Maintenance ........................................................................................11 Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 1 1.0 GENERAL PROVISIONS 1.1 Project Description This Application to renew the Type 1 Composting Facility permit for the Highway 49 C&D Landfill is being submitted by BP Barber on behalf of Highway 49 C&D Landfill, LLC. This application meets the composting facility design parameters, contraction requirements, and design drawing requirements found in Section .1400 of 15A NCAC 13B of the North Carolina Department of Environment and Natural Resources (NCDENR) Solid Waste Management Rules. This application package includes information regarding the site design, construction and operation. Project Title: Highway 49 C&D Landfill Composting Facility Owner: Highway 49 C&D Landfill, LLC 19109 West Catawba Avenue Suite 200 Cornelius, North Carolina 28031 (704) 895-0329 Owner's Representative: Mike Griffin Consulting Engineer: BP Barber 5900 Northwoods Business Parkway Suite O Charlotte, NC 28269-7511 Consulting Engineer’s Representative: Adam C. Way, P.E. Proposed Site Operator: Highway 49 C&D Landfill, LLC 19109 West Catawba Avenue Suite 118 Cornelius, North Carolina 28031 (704) 895-0329 Operator’s Representative: Ronald Gilkerson Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 2 The Highway 49 C&D Landfill Composting Facility is located at 2105 Speedrail Court, in Harrisburg, NC. Renewal for the composting permit is being sought. The composting facility will be relocated as shown on the Site Plan in Appendix A, and consists of land totaling 5 acres. Access to the site is provided via Speedrail Court. The property is owned by C&D Management, LLC, and the facility will be operated by Highway 49 C&D Landfill, LLC. Mr. Ronald Gilkerson (Telephone (704) 895-0329) will be responsible for daily operations. 1.2 Site Requirements The composting facility will not be located over a closed-out disposal facility. This can be confirmed by viewing the Site Plan in Appendix A. The surrounding area consists of woods and vegetation. Existing ground surface elevations of the proposed composting area range from 608 to 640 feet, mean sea level (MSL). The property surrounding the composting area is owned by the Highway 49 C&D Landfill and others. The applicable buffer requirements are met (see Site Development section 2.1 below) where the composting facility is surrounded by others. 2.0 FACILITY DESIGN 2.1 Site Development The site is not currently located within an existing flood plain, nor shall the proposed design result in washout of solid waste such as to pose a hazard to human life, wildlife, land or water resources. The composting facility will be located, as required, fifty (50) feet from any property boundary delineating parcels of land not owned by Highway 49 C&D Landfill. A two hundred (200) foot minimum buffer between compost areas and residences or dwellings not owned or occupied by the permittee will be maintained at all times. A fifty (50) foot buffer zone will be maintained between the composting area and perennial Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 3 streams/rivers. A twenty-five (25) foot minimum buffer will be maintained between compost areas and swales or berms to allow for adequate access of fire fighting equipment. The composting facility shall be located in accordance with 15A NCAC 2B .0200, Classification and Water Quality Standards Applicable to Surface Waters in North Carolina. The site will not cause a discharge of materials or fill materials into waters of the State that would be in violation of Section(s) 404, and 402 of the Clean water Act, or in violation of the requirements of the National Pollutant Discharge Elimination System (NPDES). The site will not cause non-point source pollution of waters of the state that violates assigned water quality standards. The site shall not contravene groundwater standards as established under 15A NCAC 2L. The portion of the site designated for active composting will have a soil texture finer than loamy sand, and a depth to the seasonal high water table shall be maintained of at least twelve (12) inches, (Type 1 facility). 3.0 DESIGN REPORT 3.1 Design Capacity The design capacity of the facility is approximately 20,000 cubic yards per year. 3.2 Material Processing This section provides general material processing information. Detailed operations are illustrated on the flow diagram on Page 12 of this report. Compost (grass clippings and loose leaves) Grass clippings generated by the Town of Harrisburg will be received free of charge, unless other agreements are made. All material shall be transported through the scales for weighing verification. The material will then be transported to the drop-off area for unloading. The grass clippings and leaves will be segregated in compost windrows. Product mixing will include some soil and mulch fines to enhance nitrification. The compost produced will be available to the Town of Harrisburg or Cabarrus County residents free of charge. Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 4 Land-clearing debris (tree limbs, tree stumps, etc.) Land-clearing debris will be transported in bulk loads and weighed at the scale house. The material will then be transported to the drop-off areas. The debris will be routed to temporary stockpiles in the reprocessing areas. This debris material will also be stored in windrows for proper management. The material will be scheduled for grinding every quarter or when windrow storage capacity reaches 3,000 cubic yards. A tub grinder will be transported to the site to produce mulch from the material. The mulch products will then be placed in the windrows for storage. All windrow mulch products will be power screened for fines separation and topsoil generation. The mulch produced will be used on-site to supplement erosion control measures. As with the compost produced, the mulch material will be offered to the Town of Harrisburg and local residents of Cabarrus County free of charge. Soil from land-clearing debris Topsoil from root balls of stumps will be removed prior to grinding and stockpiled separately. The fines from mulch screening will be mixed with the topsoil removed from the root balls, and power screened to refine the product type. The material will then be windrowed for storage. This material will be used to improve cover soils for hydro-seeding. Also, some of the topsoil products will be offered to the Town of Harrisburg and local residents for use in landscaping. Aggregate (Crushed inert debris such as brick, block, concrete, etc.) Segregated loads of clean inert debris will be weighed at the scalehouse and transported to the temporary storage areas. This material is not to be placed in the windrows. This material will be scheduled for processing every quarter, or when storage capacity reaches 2,000 cubic yards. A Bohringer Eagle rock crusher, which is rated at less than 100 tons per hour, will be used for processing inert materials. This product will be used on-site for construction of the haul roads. 3.3 Temperature Monitoring The compost is monitored on a monthly basis for temperature. For compost windrows that have been in storage for thirty (30) days or longer, the temperature is to be monitored on a weekly basis. The temperature probes will be placed in the compost to Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 5 document and measure temperature generations. The recorded temperature will be used to ensure that the minimum temperature of 131º F for three (3) days is maintained for the compost. Should the recorded temperature fall below the 131º F temperature specified, pathogen testing will be performed to ensure pathogen levels are in the required range. The procedure utilized for temperature recording is random testing of all stored compost in windrows at the frequencies mentioned above. Each composting windrow will be monitored with a compost thermometer, which has a 48-inch probe to ensure that all areas inside the windrow can be measured. Each probe measurement will be obtained at fifty (50) foot intervals utilizing the full length of the probe. Each probe will be monitored for a period of approximately five minutes, or until the temperature reading has stabilized. Each monitoring event will be recorded on a monitoring chart. The probe will be verified twice daily at the same location for temperature recordation. If necessary, additional windrow turning will be performed for the compost to bring the temperature up to the required 131º F for three days. 3.4 Temperature Control Windrow turning is performed on the compost once to twice monthly. The compost is turned using a front-end loader. If temperatures for the compost windrows fall below the 131º F required for three days, additional windrow turning will be performed. In addition to windrow turning, adding a mixture of grass clippings with the wood chips and leaves will increase biodegradation. If additional turning does not bring temperatures to the desired range, ammonium nitrate may be added to improve biodegradation. 3.5 Service Area The Highway 49 C&D Landfill composting will continue to service Cabarrus, Mecklenburg, Union, Stanly, and Rowan Counties. Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 6 3.6 Equipment Requirements The facility will be operated with equipment used by the facility owner to maintain and operate the existing C&D landfill. 4.0 CONTAINMENT AND ENVIRONMENTAL CONTROL SYSTEM 4.1 Groundwater Considerations A minimum of twelve (12) inches will be maintained to the seasonal high water table. 4.2 Controlling Nuisances and Vectors Potential nuisances affecting the area surrounding the landfill’s composting facility include odor, dust, fires, blowing litter, sedimentation, and vectors. Potential vectors include rodents, birds, and other scavengers. A water truck will be used to control dust emissions on borrow areas, haul roads and at the working face. This equipment will be used on an as-needed basis. Open burning is not permitted at the landfill. In the event of a fire in the debris, the burning materials will be covered with a soil cover if the fire is deemed manageable. If the fire is determined to be unmanageable for landfill personnel, the local fire department will be notified. Fences will be used to control blowing litter. Routine inspection and policing of the facility will be conducted to ensure that litter will not pose a nuisance or hazard. Odors and vectors are not expected to be problematic. 5.0 C&D LANDFILL DEVELOPMENT, GENERAL OPERATION AND MAINTENANCE 5.1 Plan and Permit Requirements All construction documents and plans of the permit shall be followed. A copy of the plans, permits, and operational reports shall be maintained at the office at all times. Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 7 5.2 Hours of Operation The Highway 49 C&D Landfill and its composting facility will maintain operating hours between 7:30 AM and 5:30 PM Monday through Saturday. Saturday hours may be reduced depending on waste stream. The facility will be closed on the following holidays: New Year’s Day Labor Day Memorial Day Thanksgiving Day Independence Day Christmas Day A sign or signs identifying the owner, operator, telephone number, NCDENR permit number, types of waste accepted and the landfill operating hours will be posted at the entrance to the landfill. 5.3 Drop-Off Area The drop-off area will be located within the composting areal limits, which are shown on the Site Plan in Appendix A. Material is to be separated at the drop-off area by type. Signs designating the types of material such as “Grass Clippings and Leaves,” “Land Clearing Debris,” “Topsoil” and “Aggregate” shall be posted at the drop-off area. An inspector shall be located at the drop-off area to inspect each incoming load. Waste that does not meet the criteria for the acceptable materials shall be disposed of in an on-site waste container for future disposal at a permitted municipal solid waste landfill. 5.4 Windrow Processing The majority of material that is stored in the windrows does not require turning. The compost itself takes an extended period to process. The windrows containing compost are to be turned once to twice monthly. The composting matter is to remain in the windrows for approximately three to six months for aging prior to use. Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 8 5.5 Adverse Weather Conditions Processing, loading, and storage of mulch, aggregate, and compost are done regardless of the weather conditions. The topsoil products may require covered storage. The drop-off area and entrance have all-weather roadways. The roadways shall be kept clear during periods of snowfall. Tub grinding and screening may be stopped during periods of high winds, should dust become an issue. Dust shall be controlled on the roadways as described in Section 6.6. 5.6 Flow Diagram Please refer to the attached Flow Diagram on Page 12 of this report. 5.7 Contingency Plan Should an instance of on-site equipment failure or temporary shut down of the facility occur, all incoming loads of material shall be stockpiled at the drop-off area. Overflow stockpiling is available in the previously approved composting area. On-site, no open burning of material is permitted. Should accidental fires occur, equipment and stockpiled soil shall be provided to control them. Any occurrence of fire at the facility shall be reported to the NCDENR Division of Waste Management within 24 hours, and written notification shall be submitted by the Operations Manager within 15 days. Should a fire occur at the facility, the local fire department (Harrisburg Fire Department) shall be notified. Loads that are hot shall be removed immediately and placed away from the facility and the fire department shall be notified. Said loads shall be sprayed down with water until the fire and/or combustion is extinguished. The load shall then be reloaded for disposal in the landfill. The Harrisburg Fire Department is aware of this proposed facility. Should a fire occur they have agreed to respond to the site. 6.0 Facility Operation 6.1 Training of Facility Personnel The proposed management team and site operation staff are properly trained to Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 9 execute important tasks such as the following: 1. Monitoring of incoming wastes 2. Identification of unauthorized wastes 3. Accurate recording of accepted wastes 4. Safe equipment operation The management team includes Mr. Larry Griffin, Sr. of Griffin Brothers, owner, and Mr. Ronald C. Gilkerson, Site Geologist. 6.2 Entrance The existing entrance and haul roads for the Highway 49 C&D Landfill will be used to access the Highway 49 C&D Landfill Composting Facility. 6.3 Access and Security The site has controlled access with the use of entrance gates. The entrance gates allow entry to the currently operating landfill located to the west of the composting facility. The same entrance will be used for access to the composting facility, and will remain gated. Access to the composting facility is restricted to the entrance gate only. Coddle Creek prevents access to the site from the north and the east, while the currently operating landfill (with fencing and wooded buffer) prevents access from the west. Access to the site from the south is also restricted by a wooded buffer. Access roads are all-weather construction and will be maintained in good condition. A scalehouse is located at the entrance with an attendant present during operational hours. The attendant is responsible for evaluating loads to assure compliance with operation requirements and to direct the loads to the appropriate location on site—landfill, recycling/processing area, or composting facility. In addition, signs are posted to direct loads to the appropriate area. Dust is controlled on access roads through the use of a water truck. Signs are posted indicating that liquid, hazardous, and municipal wastes are prohibited. Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 10 6.4 Signs Existing signs are provided at the existing site entrance and show the contact name, telephone number, permit number, and the landfill operating hours. Information on disposal procedures and wastes that cannot be accepted is also provided. Traffic signs will be provided as needed to direct customers and to promote orderly traffic flow to and from the disposal areas. 6.5 Waste Acceptance The Highway 49 C&D Landfill Compost Facility will accept yard trash as defined in 30A-290(a)(45) (solid waste consisting solely of vegetative matter resulting from landscaping maintenance). All yard trash will be composted. The following waste will be accepted: 1. Grass clippings, loose leaves, etc. 2. Tree limbs, stumps, etc. 3. Soil from land clearing debris 4. Aggregate (crushed inert debris such as brick, block, or concrete) The Highway 49 C&D Landfill Compost Facility cannot accept the following wastes. Further, the following wastes can not be processed into the compost: 1. Hazardous waste nor asbestos containing waste 2. Household hazardous waste 3. Any compost made from solid waste The Operations Manager will notify the NCDENR Division of Waste Management within twenty-four (24) hours of an attempt to dispose of any of the forbidden waste products. Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 11 6.6 Dust, Litter, Odors, and Vectors Dust, litter, odors, and vectors are discussed in Section 4.2. Dust generated by composting operation will be controlled or reduced by: 1. Application of water via the irrigation system provided along the existing access road or by using a water truck. 2. Regular removal of mud and dirt from the paved roads. 3. Vegetating of final cover and borrow areas as soon as practical. Blowing litter will be reduced or controlled by: 1. Limiting the size of the active working area. 2. Utilization of litter fences. 3. Policing of the area. Odors and vectors are not expected to be problematic. If environmental problems associated with the landfill are detected and confirmed by NCDENR, Highway 49 C&D Landfill, LLC will submit to NCDENR for review and approval a corrective action plan and a schedule of compliance for implementing the plan. 6.7 Landscaping Maintenance Landscaping maintenance will include the existing entrance. An irrigation system is used to water the grassed and planted areas. Grass is mowed as needed and any distressed areas will be fertilized or replanted. Planted shrubbery and trees will be fertilized and mulched at least two (2) times per year. Highway 49 C&D Landfill, LLC Compost Facility Application BP Barber 12 Flow Diagram Station 1 - Recycling & Reprocessing Drop-off Area Station 3 - Mobile Units (Power Screen, Tub Grinder, Rock Crusher) Station 6 - Aggregate Storage Station 2 - Materials Storage Station 5 Station 4 Compost Windrows Mulch & Topsoil Windrows APPENDICES INDEX APPENDIX A DRAWINGS APPENDIX B SOIL BORROW CALCULATIONS APPENDIX C STABILITY AND SETTLEMENT CALCULATIONS APPENDIX D SEDIMENT AND EROSION CONTROL APPENDIX E STORMWATER APPENDIX F COST ESTIMATE APPENDIX G CONSTRUCTION QUALITY ASSURANCE APPENDIX H OPERATIONS PLAN www.bpbarber.com BP BARBER APPENDIX A ROLLED DRAWINGS PROVIDED PREPARED BY: BP BARBER 5900 NORTHWOODS BUSINESS PKWY, SUITE O CHARLOTTE, NORTH CAROLINA 28269 PROJECT NO. 05185-H49 www.bpbarber.com BP BARBER APPENDIX B SOIL BORROW CALCULATIONS PREPARED BY: BP BARBER 5900 NORTHWOODS BUSINESS PKWY, SUITE O CHARLOTTE, NORTH CAROLINA 28269 PROJECT NO. 05185-H49 Borrow Calculations * Based on Land Development Desktop, 2006 Excess Excavation: 1,000,000 cu. yd Gross Volume: 3,100,000 cu. yd. Soil Cover = 2%: =× 02.0000,100,3 62,000 cu. yd. Final Cover: =⎟⎟⎠ ⎞⎜⎜⎝ ⎛××⎟⎟⎠ ⎞⎜⎜⎝ ⎛× 3 32 273560,438.36 ft ydftacres ftacres 178,000 cu. yd. Excess Soil = Excess Excavation – Soil cover – Final Cover Excess Soil: 1,000,000 – 62,000 – 178,000 = 760,000 cu. yd. ∴Excess Soil = 760,000 cu. yd. Allow 15% Shrinkage: (0.85)( 760,000) = 646,000 cu. yd. Waste Generation Waste Generation: day tons420 Operational Days per Week: week days5.5 Waste Unit Weight: 3200,1 yd lbs Weekly Cover: 2% Final Cover: 3 ft - 18” Clay Cover - 18” Vegetative Cover Waste per Year = =×× yr weeks week days day tons 525.5420 120,120 tons ∴Waste per Year = 120,120 tons Volume per Year = =× tons yd yr tons 3 67.1120,120 200,200 yr yd 3 = 1,001,000 yr yd 5 3 ∴Five Year Waste Volume = 1,001,000 yd3 Total Five Year Volume = Waste Volume + Soil Cover Volume 1,001,000 yd3 + (1,001,000 yd3)(0.02) = 1,021,020 yd3 ∴Total Five Year Volume = 1,021,020 yd3 www.bpbarber.com BP BARBER APPENDIX C SLOPE STABILITY AND FOUNDATION SETTLEMENT ANALYSES PREPARED BY: BP BARBER 5900 NORTHWOODS BUSINESS PKWY, SUITE O CHARLOTTE, NORTH CAROLINA 28269 PROJECT NO. 05185-H49 SETTLEMENT ANALYSIS This analysis will estimate settlement resulting from landfilling operations through Phase I and the landfill operation through closure of the proposed expansion footprint of the Highway 49 C&D Landfill due to an increase in soil loading as a result of landfilling operation (waste placement). The site generally consists of the following layers starting from the ground surface, and going downward: 1) Red-brown clayey silt 2) Light brown slightly sandy silt 3) Gray-brown sandy silt (with partially weathered rock – PWR) 4) Gray granite Based on Lithologic Logs provided by Enviro-Pro P.C., this subsurface soil profile is the most critical in the landfill footprint. This profile, having the thickest layer of clay, is of interest due to clay’s tendency to swell from saturation and deflate under pressure (as the water is forced out of the voids the percentage of voids in the soil decreases under pressure). These subsurface soil conditions are characteristic of the soil in and around Monitoring Well (MW)-62. As a result of the subsurface profile of MW-62 and its potential for settlement, it is selected as the most conservative situation for which to gauge settlement. Because no where else in the footprint is anticipated to settle as much as this noted critical place, its results will be applied to the footprint in its entirety to assure other areas of the landfill maintain the post-settlement 4 feet separation requirement between the bedrock and/or long-term seasonal high groundwater table. The evaluation of settlement will include the amount of settlement resulting from landfilling operations at Phase I closure (maximum load on the landfill floor resulting from waste placement during Phase I) and at total landfill closure (maximum load on the landfill floor resulting from waste placement during the life of the landfill) using the said most critical soil profile in the landfill footprint exclusively to ensure additional conservatism. The settlement magnitudes within the Phase I footprint will vary depending on the height of the waste “column” at any given location. For this reason, the locations for which to perform the analysis are chosen at points with very contrasting characteristics with regards to the height of the waste “column:” 1) Beneath the Center of Landfill Crest 2) Beneath the Edge of the Landfill Crest 3) Beneath the Landfill Mid-Slope 4) Beneath the Landfill Edge The evaluation of the settlement is based on the elastic theory of settlement. To estimate the elastic settlement, the Hough Method is employed. Use of the Hough Method first requires the determination of the Hough Bearing Capacity Index, C’. This is done using the following graph, which gives the Index value as a function of soil type and its corresponding Standard Penetration Resistance (N). The Hough Bearing Capacity Index is then applied using the settlement equation (see attached spreadsheets), allowing the settlement to be estimated. The “Column Load Adjustment Factor” appearing in the attached spreadsheets adjusts the maximum load applied to the soil as a result of waste placement by accounting for the change in the height of the waste column depending on its location on the landfill “hill.” The attached spreadsheets show the estimated settlements at the aforementioned locations. The maximum settlement of 1.47 inches, as expected, occurs directly beneath the peak of the landfill “hill” at the time of landfill closure (highest peak). The properties of the soils should be verified prior to construction, to assure the properties used in the analysis are acceptable. LANDFILL SETTLEMENT ANALYSIS CONSIDERING ELASTIC THEORY-Phase 1 ClosureMW-62C&D60 pcf100ftCalculation Method: Hough Elastic Settlement130 pcf--pcf125 pcf--pcf--pcf20ftLocation: Center of LF CrestFrom (MSL) To (MSL)ft in1 Clay 06 6 3 125 78 375 600016375 0.095 1.1362 PWR 69 3 1.5 130 160 195 600016195 0.028 0.338 Total 0.123 1.474Location: Edge of LF CrestFrom (MSL) To (MSL)ft in1 Clay06 6 3 125 78 375 60000.976195 0.094 1.124Column Load Adjustment Factorσ'o + Δσ'ρH (ft)Hmid (ft)γsat (pcf)C1σ'o (psf)Δσ' (psf)Boring ID:Fill Type:Unit Wgt of Fill:Fill Hgt:Layer DepthLayer No. Soil TypeSat Unit Wgt of Fill:GWT (bgs):Layer No. Soil TypeSat Unit Wgt of PWR:Sat Unit Wgt of Silt:Sat Unit Wgt of Clay:Sat Unit Wgt of Sand:C1σ'o (psf)Δσ' (psf)Column Load Adjustment FactorLayer DepthH (ft)Hmid (ft)γsat (pcf)σ'o + Δσ'ρ⎥⎦⎤⎢⎣⎡Δ+=ooCH''logσσσρ 1 Value taken from chart (Hough, "Compressibility as a Basis for Soil Bearing Value" ASCE 1959).1Clay06631257837560000.9761950.0941.1242 PWR 69 3 1.5 130 160 195 60000.976015 0.028 0.335 Total 0.122 1.459Location: Beneath LF Mid-SlopeFrom (MSL) To (MSL)ft in1 Clay 06 6 3 125 78 375 60000.53375 0.073 0.8812 PWR 69 3 1.5 130 160 195 60000.53195 0.023 0.273 Total 0.096 1.154Location: Beneath LF EdgeFrom (MSL) To (MSL)ft in1 Clay 06 6 3 125 78 375 60000.03555 0.013 0.1572 PWR 69 3 1.5 130 160 195 60000.03375 0.005 0.064 Total 0.018 0.221σ'o + Δσ'ρLayer No. Soil TypeLayer DepthH (ft)Hmid (ft)γsat (pcf)Layer No. Soil TypeLayer DepthH (ft)Δσ' (psf)Column Load Adjustment FactorC1σ'o (psf)Δσ' (psf)Column Load Adjustment Factorσ'o + Δσ'ρHmid (ft)γsat (pcf)C1σ'o (psf)⎥⎦⎤⎢⎣⎡Δ+=ooCH''logσσσρ 1 Value taken from chart (Hough, "Compressibility as a Basis for Soil Bearing Value" ASCE 1959). STATIC SLOPE STABILITY The analysis of the static slope stability for the Highway 49 Landfill Expansion Phase I was carried out based on the most critical soil profile found in the landfill expansion footprint: the profile described in the boring log labeled MW-62. Based on the existing (bedrock and groundwater elevations, and existing topography) and proposed (proposed floor grade and proposed closure grade) site conditions, Critical Sections 1 and 2 were taken in Phase I of the expansion as shown on the attached Phase I Stability Analysis Section Map, and Sections 1a and 2a were taken for the entire expansion as shown on the attached Expansion Stability Analysis Section Map for evaluation. Critical Section 1 is located such that it transects the proposed landfill and the proposed sediment basin associated with Phase I of the expansion, and runs southeast to northwest generally in direction. This section was chosen as critical because of potential instability associated with the presence of the sediment basin near the toe of the landfill slope. Critical Section 2 transects Phase I of the expansion and runs generally from northeast to southwest, and is analyzed to verify that the south side of the landfill will not be susceptible to failure. Critical Sections 1a and 2a were analyzed to verify the stability of the expansion at full buildout. The soil properties used in the analysis are typical for the soil profile chosen from the boring logs. The soil properties used can be found in text from Braja M. Das, “Principles of Geotechnical Engineering,” 6th Ed, 2006. The critical sections were evaluated based on the discussed soil properties under varying circumstances. The analysis was performed for the soil in place for the proposed floor under different moisture conditions, varying from 0% saturation to 100% saturation. This allows for certainty (based on the software utilized) that regardless of moisture conditions, there will be no failure, assuming the landfill is constructed as designed. The characteristics of the construction and demolition (C&D) waste material were based on past tests and analyses performed for similar C&D landfill waste facilities in North Carolina. To analyze both the global stability and stability of the landfill embankments, circular failure surfaces were defined in the evaluation. GSTABL7 with STEDwin (computer software) was used to conduct the analysis. The soil properties input into the software were based on typical engineering correlations with boring log information, as noted above. The calculation of the factor of safety (FS) for the failure surfaces included the Modified Bishop’s method. The minimum FS for each critical section are summarized in the following table: Cross Section Minimum Factor of Safety Phase I 1 1.98 2 1.86 Expansion 1a 2.45 2a 1.95 According to the results of the GSTABL7 analysis (enclosed), the proposed design complies with the minimum required FS of 1.5 for static slope stability, assuming the properties of the soils are consistent with the soils on site, which should be verified prior to construction. Phase I Critical Section 1 0200400600800100012001400160002004006008001000Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-phasei-x1.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:22AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 113333333311111111111111111222222222W1W1W1W1W1W1W1W1W1bcdefghija#FSa 3.626b 3.697c 3.762d 3.763e 3.781f 3.849g 3.974h 4.009i 4.080j 4.083SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=3.626Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 0200400600800100012001400160002004006008001000Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-phasei-x1.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:23AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 113333333311111111111111111222222222W1W1W1W1W1W1W1W1W1bcdefghija#FSa 1.981b 2.085c 2.180d 2.659e 3.074f 3.093g 3.148h 3.402i 3.436j 3.617SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=1.981Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 0200400600800100012001400160002004006008001000Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-phasei-x1.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:25AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 113333333311111111111111111222222222W1W1W1W1W1W1W1W1W1bcdefghija#FSa 4.127b 4.268c 4.575d 4.581e 4.634f 4.659g 4.721h 5.545i 5.558j 5.591SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=4.127Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 0200400600800100012001400160002004006008001000Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-phasei-x1.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:25AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 113333333311111111111111111222222222W1W1W1W1W1W1W1W1W1bcdefghija#FSa 3.443b 3.562c 3.891d 3.965e 4.102f 4.174g 4.273h 4.405i 4.418j 4.487SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=3.443Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) Phase I Critical Section 2 0200400600800100012000200400600800Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-phasei-x2.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:15AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1111333333331111111111222222222W1W1W1W1W1W1bcdefghija#FSa 2.557b 2.922c 3.240d 3.307e 3.510f 3.541g 3.574h 3.580i 3.607j 3.632SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=2.557Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 0200400600800100012000200400600800Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-phasei-x2.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:19AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1111333333331111111111222222222W1W1W1W1W1W1bcdefghija#FSa 1.862b 1.920c 1.938d 2.086e 2.208f 2.346g 2.425h 2.455i 2.471j 2.485SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=1.862Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 0200400600800100012000200400600800Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-phasei-x2.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:21AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1111333333331111111111222222222W1W1W1W1W1W1bcdefghija#FSa 2.959b 3.250c 3.293d 3.344e 3.480f 3.500g 3.646h 3.703i 3.778j 3.918SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=2.959Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 0200400600800100012000200400600800Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-phasei-x2.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:19AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1111333333331111111111222222222W1W1W1W1W1W1bcdefghija#FSa 2.398b 2.528c 2.632d 2.859e 2.888f 2.981g 2.986h 3.045i 3.076j 3.082SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=2.398Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) Expansion Critical Section 1a 03006009001200150018002100030060090012001500Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-cx1.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:32AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 1111333333333333333333333311 1 111111111 1111111112222222222222222W1W1W1W1W1W1W1W1W1W1W1W1W1bcdefghija#FSa 2.446b 2.591c 2.721d 2.745e 2.753f 2.895g 2.989h 3.160i 3.301j 3.323SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=2.446Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 03006009001200150018002100030060090012001500Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-cx1.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:35AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 1111333333333333333333333311 1 111111111 1111111112222222222222222W1W1W1W1W1W1W1W1W1W1W1W1W1bcdefghija#FSa 3.232b 3.317c 3.600d 3.803e 3.970f 3.980g 4.203h 4.222i 4.292j 4.543SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=3.232Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 03006009001200150018002100030060090012001500Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-cx1.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:34AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 1111333333333333333333333311 1 111111111 1111111112222222222222222W1W1W1W1W1W1W1W1W1W1W1W1W1bcdefghija#FSa 3.871b 3.947c 4.040d 4.123e 4.585f 4.750g 4.931h 5.134i 5.164j 5.311SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=3.871Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 03006009001200150018002100030060090012001500Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-cx1.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:29AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 1111333333333333333333333311 1 111111111 1111111112222222222222222W1W1W1W1W1W1W1W1W1W1W1W1W1bcdefghija#FSa 3.214b 3.352c 3.396d 3.406e 3.460f 3.473g 3.614h 3.734i 3.875j 3.974SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=3.214Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) Expansion Critical Section 2a 02505007501000125015001750025050075010001250Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-cx2.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:37AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 111111111333333333333333333311 11111111111111222222222222W1W1W1W1W1W1W1W1W1bcdefghija#FSa 4.040b 4.083c 4.173d 4.252e 4.614f 4.636g 4.686h 4.721i 4.998j 5.023SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=4.040Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 02505007501000125015001750025050075010001250Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-cx2.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:45AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 111111111333333333333333333311 11111111111111222222222222W1W1W1W1W1W1W1W1W1bcdefghija#FSa 1.951b 1.959c 1.975d 1.990e 2.063f 2.099g 2.143h 2.575i 2.794j 2.828SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=1.951Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 02505007501000125015001750025050075010001250Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-cx2.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:40AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 111111111333333333333333333311 11111111111111222222222222W1W1W1W1W1W1W1W1W1bcdefghija#FSa 3.762b 3.933c 3.944d 4.020e 4.034f 4.051g 4.306h 4.315i 4.368j 4.460SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=3.762Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) 02505007501000125015001750025050075010001250Highway 49 C&D Landfill Job No. 05185H49n:\projects\05185h49\engr\expansion phase 1 settlement & stability analysis\gstabl stability analysis\expansion-cx2.pl2 Run By: Robert Kendrick, BP Barber 8/6/2010 11:39AM1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 111111111333333333333333333311 11111111111111222222222222W1W1W1W1W1W1W1W1W1bcdefghija#FSa 2.000b 2.005c 2.009d 2.195e 2.259f 2.325g 2.853h 2.904i 2.944j 2.964SoilDesc.Ex/PWRBRockC&DSoilTypeNo.123TotalUnit Wt.(pcf)114.5170.060.0SaturatedUnit Wt.(pcf)127.5170.070.0CohesionIntercept(psf)0.00.00.0FrictionAngle(deg)43.041.030.0PorePressureParam.0.000.000.00PressureConstant(psf)0.00.00.0Piez.SurfaceNo.W1W1W1GSTABL7 v.2 FSmin=2.000Safety Factors Are Calculated by GLE (Morgenstern-Price) Method (0-2) CAP STABILITY The stability of the uppermost thirty-six (36) inches of the landfill, hereafter referred to as “closure cap,” is dependent upon the shear strength and frictional resistance of the soils making up the closure cap and the soil underneath it, on which the cap rests and will depend for support. To determine the stability of the cap system, infinite slope methodology can be applied. The infinite slope method is applicable when potential slope failure would occur along a “surface.” Because there are different layers placed (18” low permeability clay layer, 18” vegetative cover) during the landfill closure sequence, the aforementioned soils’ interaction with one another at the created interfaces between layers is critical. It is for this reason that the infinite slope methodology is fitting. When compared to other slope stability analysis methods, the infinite slope method produces a more conservative factor of safety. This conservative result is produced because the infinite slope methodology does not account for buttressing at the toe of a given slope. The factor of safety is calculated as follows: β δ tan tan=FS Where: FS = factor of safety δ = critical interface angle of friction (degrees) β = slope of final cover (degrees) Using the design slope of 3:1, β = 18.4o, and FS = 1.5, the results indicate the maximum critical interface angle of friction to be 26.5o: °=⇒=5.264.18tan tan δδFS Assuming the interface angle of friction at the point of interface interaction is not less than 26.5o, the final cover system will remain in place and experience no failure. Therefore, the properties of the soils to be used for the closure cap system should be verified prior to use for construction of the closure cap. www.bpbarber.com BP BARBER APPENDIX D SEDIMENT AND EROSION CONTROL PREPARED BY: BP BARBER 5900 NORTHWOODS BUSINESS PKWY, SUITE O CHARLOTTE, NORTH CAROLINA 28269 PROJECT NO. 05185-H49 Project Name: Highway 49 C&D Landfill Subject: Erosion Control Calculations Project No: 05185H49 Date: 10/28/08 Calcs Performed By: WRK Calcs Checked By: SLB OBJECTIVE: Design Erosion and Sediment Control Plan containing plunge pools, ditches and a sediment basin. The plunge pools shall be lined with rip rap. The sediment basin will be designed as a permanent structure, for the 25-year 24-hour storm peak runoff, and be of the riser type. The conveyance ditches shall also be designed for the 25-year 24-hour storm peak runoff. Conditions will be evaluated for peak flow and peak drainage area for the landfill just prior to closure (most conservative). ***REFERENCES: 1. North Carolina Erosion and Sediment Control Handbook, 2006. 2. “Landfill Expansion Phase 1” drawings by BP Barber, 10/28/08. 3. North American Green Erosion Control Design Software, ver. 4.3.0. 4. StormNET, BOSS International, version 4.8.8.11789. May 19, 2008. 5. USDA Design Note 6 (2nd edition) spreadsheet, NCDENR, Jan 23, 1986. TERMS: Q25 = 25-year peak flow, (ft3/s) Q10 = 10-year peak flow, (ft3/s) Q2 = 2-year peak flow, (ft3/s) Qp = minimum flow through principal spillway, (ft3/s) Qe = minimum flow through emergency spillway, (ft3/s) H = head of barrel pipe, (ft) cfs = cubic feet per second C = runoff coefficient i = rainfall intensity, (in) A = drainage area, (acres) tc = time of concentration, (min) As = surface area of the basin, (ft2) h = maximum head above the riser, (ft) T = detention time to dewater basin, (hr) Cd = coefficient of contraction for the orifice Vw = volume of water displaced by riser, (ft3) Ww = weight of water displaced by riser, (lb) d = diameter of riser, (ft) γw = unit weight of water, (lb/ft3) γc = unit weight of concrete, (lb/ft3) Vc = volume of concrete anchor, (ft3) GIVEN/REQUIREMENTS: Minimum design storm for sed. and erosion control—permanent = 25 year [Ref: 1] Total drainage area for Sediment Basin SB-1 = 28.65 acres [Ref: 2] Project Name: Highway 49 C&D Landfill Subject: Erosion Control Calculations Project No: 05185H49 Date: 10/28/08 Calcs Performed By: WRK Calcs Checked By: SLB I. SEDIMENT BASIN SB-1 1. Design Basin SB-1 to handle 25-year storm - Use rational method to determine peak flow based on conservatism and drainage area being less than 100 acres. [Ref: 1] - Post-developed conditions include final grading and installation of all permanent conveyance measures and assume Phase I is completely closed per closure plan, full vegetation not fully established. a. Time of concentration, tc, is 15 minutes (minimum allowable). [Ref: 4] b. Determine rainfall intensity based on tc. - i (25 yr) = 5.40 inches/hour [Ref: 1] c. Determine runoff coefficient, C - Assume bare packed soil, C = 0.40 [Ref: 1] - Assume woodlands/heavy foilage, C = 0.25 [Ref: 1] Determine peak flow for tc = 15 mins [Ref: 1] cfsQ cfsacreshrinQ cfsacreshrinQ CiAQ Total Woods Bare 42.59 25.4)15.3)(/40.5)(25.0( 17.55)5.25)(/40.5)(40.0( )(25 )(25 )(25 = == == = 2. Limitations and Basin Dimensions: [Ref: 1] -Height of embankment = 6 ft < 25 ft therefore ok. -Exterior side slope = 3:1 > 2:1 therefore ok. -Interior side slope = 3:1 > 2:1 therefore ok. -Spillway side slope =3:1 > 2:1 therefore ok. -Spillway depth = 2.0 ft ≥ 1.0 ft therefore ok. -Top width of embankment = 10 ft ≥ 8 ft therefore ok -Freeboard = 1ft therefore ok. 3. Determine Basin Volume Volume for Sediment Basin SB-1 [Ref: 2] Elevation [Ref: 2] Area [Ref: 2] Height Volume 544 16,902 2 39,622 546 22,720 2 51,571 548 28,851 2 64,205 550 35,354 Project Name: Highway 49 C&D Landfill Subject: Erosion Control Calculations Project No: 05185H49 Date: 10/28/08 Calcs Performed By: WRK Calcs Checked By: SLB - Total basin volume = 155,398 ft3 - Minimum required basin volume = 3,600 ft3/acre [Ref: 1] - Total volume required = (3,600 ft3/acre)(28.65 acres) = 103,140 ft3 - 103,140 ft3 < 155,398 ft3 therefore ok. 4. Check ratio of sediment trap surface area to peak inflow rate - 435 square feet per cfs of Q25 inflow [Ref: 1] - Surface area = 35,354.6 ft2 - Q25 based on 25 year, 24 hour storm - Q25 = 59.42 cfs - (59.42 cfs)(435) = 25,848 ft2 - 25,848 < 35,354.6, therefore ok. - Barrel Capacity (min Qp ≥ Q2) Qp ≥ Q2 Q2= (0.40)(3.80in/hr)(25.5Ac) + (0.25)(3.80in/hr)(3.15Ac) = 41.75cfs Qp = 41.75cfs 5. Principle Spillway Discharge Capacity - Q2 = 41.75cfs, which a 30” pipe (@ 1.8% slope) will handle. [Ref: 4] - Using Table 8.07b this requires the use of a 36” diameter corrugated metal riser. [Ref: 1] - cfsCLHQ83.680.2*85.7*1.3 2/32/3 === [Ref: 1] - cfsgHCAQ14.48)2*2.32*2)(07.7)(6.0()2(5.05.0 === [Ref: 1] - cfsLKK ghaQ pm 70.55112*0123.11 75.6*2.32*291.41 2 5.05.0 =⎥⎦ ⎤⎢⎣ ⎡ ++=⎥⎦ ⎤⎢⎣ ⎡ ++= [Ref: 1] - 48.14cfs > 41.75cfs, therefore ok. - A 36” riser 4.0’ in height is to be used. [Ref: 1] 4. Anti-Seep Collar - Collar at 1.5 x 30” = 45” x 45”, minimum 2’ from pipe joint. 5. Antiflotation Block [Ref: 1,2] - Weight of water displaced by riser o 322 3.284 )3()4(4)(ftftftdHVW=⎟⎟⎠ ⎞⎜⎜⎝ ⎛=⎟⎟⎠ ⎞⎜⎜⎝ ⎛=ππ o lbftlbftVWwww765,1)/4.62)(3.28(33 ===γ - Size of concrete anchor Project Name: Highway 49 C&D Landfill Subject: Erosion Control Calculations Project No: 05185H49 Date: 10/28/08 Calcs Performed By: WRK Calcs Checked By: SLB o To offset buoyancy, the unit weight of water will be subtracted from the unit weight of the concrete anchor o Ignore weight of riser itself as factor of safety o Area of concrete anchor = 4 ft x 4 ft = 16 ft2 o 3 33 2.20)/4.62/150( 765,1 )(ftftlbftlb lbWV wc wc =−=−=γγ Depth of anchor = ftft ft 26.116 2.20 2 3 =; use 1ft, 4in (16” deep) 6. Outlet Design - Discharge Velocity from Barrel: sftft cfs A QV /50.891.4 75.41 2 === - Rip Rap will be required. - From appendix 8.06 [Ref: 1] Step 1. Assume Minimum Tailwater Depth Step 2. From figure 8.06b, using Q = 41.75 cfs and 30” pipe d50 = 0.7 ft (8-9 in) La = 22 ft Step 3. 3*Do = 3*(30”) = 90” =7.5ft W = Do + 0.4*La = 7.5’ + 0.4*(22ft) = 17ft Step 4. dmax = 1.5*d50 = 1.5*(8”)) = 16 in Step 5. Thickness = 1.5*dmax = 1.5*(16”) = 24in, use 2.0ft 7. Emergency Spillway (Values ultimately based on 25-yr storm) [Ref: 1] - Design Spillway will be for 25 yr storm Qe = Q25 – Q2 = 59.42 cfs – 41.75cfs =17.67cfs ***Using Table 8.07c, bottom width = 12ft and Stage = 0.81ft (slope between 3.2% and 13.0%). Project Name: Highway 49 C&D Landfill Subject: Erosion Control Calculations Project No: 05185H49 Date: 10/28/08 Calcs Performed By: WRK Calcs Checked By: SLB II. Permanent Ditches 1. Design stormwater conveyance ditches to handle the 25-year storm. The ditch carrying the largest quantity of water will be designed and the to the remaining ditch. GIVEN/REQUIREMENTS: Minimum design storm = 25-year [Ref: 1] Channel Dimensions: [Ref: 2,3] Shape Left sidea slope (ft) Right sidea slope (ft) Bottom width (ft) Depth (ft) Trapezoidal 3:1 3:1 2 2 Note: a. Looking in direction of flow Channel Topography: [Ref: 2] Length (ft) Start Elev. (ft) End Elev. (ft) Slope % 1,300 608 564 3.38 a. Determine peak flow for individual channels i. Determine rainfall intensity Time of concentration 15 min i = 5.40 in/hr for 25-year storm [Ref: 1] ii. Determine runoff coefficient, C Assume smooth bare packed soil, C = 0.40 [Ref: 1] iii. Drainage area for Grass-lined Channels [Ref: 2] - Permanent Diversion PD-1 = 6.65 acres iv. Determine peak flow for Permanent Diversion Channels Q25 = CiA [Ref: 1] Total Drainage Area (ac), A Rainfall Intensity, i (in/hr) Weighted Runoff Coefficient, C Flow, Q (cfs) 6.65 5.4 0.40 14.36 Project Name: Highway 49 C&D Landfill Subject: Erosion Control Calculations Project No: 05185H49 Date: 10/28/08 Calcs Performed By: WRK Calcs Checked By: SLB b. Determine if temporary liner is required [Ref: 3] Note: a. Based on manning’s roughness coefficient of liner material and includes 0.3’ freeboard b. Matting lengths rounded to the nearest quarter foot Lengthb, (ft) Channel Design Flow (cfs) Matting Required? (Y/N) Calculated Deptha (ft) [Ref: 3] Depth OK? (Y/N) Required lining [Ref: 3] A B PD-1 14.36 Y 0.70 Y SC250 10 10 PD-2 14.36 Y 0.70 Y SC250 10 10 Project Name: Highway 49 C&D Landfill Subject: Erosion Control Calculations Project No: 05185H49 Date: 10/28/08 Calcs Performed By: WRK Calcs Checked By: SLB III. Plunge Pools for Outlet Protection 1. Design PP-1 and PP-2 to handle 10-year storm. - Assumptions: Plunge Pools will be designed to meet highest flow rate seen by any plunge pool. This will be 19.99cfs. Please see attached StormNET analysis (reference section) for flow information. Pipe 2 discharges at 19.99cfs during the 24-hour, 10 year storm. - All pipes will be cantilevered over plunge pool; this will be done to ensure that maximum impact is sustained at the plunge pool versus the ditch because the ditches are vegetated and this protection would be susceptible to erosion from high water velocities. - d50 of the rip rap will be 1.0ft in all pools. [Ref: 5] - Thickness shall be 2.0ft in all pools. [Ref: 5] - Rock bedding thickness 6.0in in all pools. [Ref: 5] - All interior slopes for plunge pool shall be 3:1. [Ref: 5] - Bottom dimensions* of pools shall be 2.5’ x 2.0’ (5ft2) [Ref: 5] - Top dimensions* of pools shall be 11.25’ x 5.75’ (64.7ft2) [Ref: 5] *Top and bottom areas of plunge pools are to graded surface. 2. Summary of Plunge Pools Plunge Pool Pipe Outlet Invert [Ref: 2] Tailwater Elevation [Ref: 2] Outlet Channel Inv. [Ref: 2] Volume of Rip Rap [Ref: 5] Volume of Bedding [Ref: 5] PP-1 630 628 630 25.3 cu yd 12.5 cu yd PP-2 565 563 565 25.3 cu yd 12.5 cu yd *** A StormNET model was created to simulate the conditions of design and to verify the obtained results were indeed functional. While the numbers generated by StormNET differ from those produced by the Sediment and Erosion Control design manual for the given conditions, the designed structures resulting from each method were the same. MULBERRY RD ROCKY RIVER RD CHAPE L C R E E K R D S W BOULDER D R HOMESTEAD DRDOVE PO INT DR SW SPEEDRAIL CT MOONLIGHT T R L S W ARCHI B A L D R D GREEN BR IAR LNSANDY POINTE DR SW AVIAN PLHERON POINT PL SWTEAL STONE CT SW FOSSIL LN SW R O C K Y S H O A L S P L S W Coddle Creek Ch MeB EnD PoFMeDPaF CuB2PaF MeD MeB Cu D 2 PoD CuB2 PoBChEn B EnBPoFMeBPaFCuB2 MeDMeB EnD CuB2CuD2 EnB EnB 535200 535200 535400 535400 535600 535600 535800 535800 536000 536000 536200 536200 536400 536400 536600 536600 536800 5368003909800 390980039100003910000391020039102003910400391040039106003910600391080039108000 1,000 2,000 3,000500 Feet0300600900150Meters Soil Map–Cabarrus County, North Carolina(HIGHWAY 49 C&D EXPANSION) Natural ResourcesNatural ResourcesNatural ResourcesNatural ResourcesConservation ServiceConservation ServiceConservation ServiceConservation Service Web Soil Survey 2.0National Cooperative Soil Survey 7/22/2008Page 1 of 3 www.bpbarber.com BP BARBER APPENDIX E STORMWATER PREPARED BY: BP BARBER 5900 NORTHWOODS BUSINESS PKWY, SUITE O CHARLOTTE, NORTH CAROLINA 28269 PROJECT NO. 05185-H49 www.bpbarber.com BP BARBER APPENDIX F COST ESTIMATE PREPARED BY: BP BARBER 5900 NORTHWOODS BUSINESS PKWY, SUITE O CHARLOTTE, NORTH CAROLINA 28269 PROJECT NO. 05185-H49 Item NumberDescriptionEstimated QuantityUnit1Fine-Grade Existing Intermediate Cover 78,400 SY $ 1.00 $ 78,400.00218" Thick 1 x 10-5 cm/sec Clay Liner78,400 SY $ 5.50 $ 431,200.00318" Thick Vegetative Soil Layer 78,400 SY $ 4.00 $ 313,600.00418" HDPE Downdrain Pipes 488 LF $ 50.00 $ 24,400.00536" HDPE Downdrain Pipes 60 LF $ 65.00 $ 3,900.006Plunge Pool 2 LS $ 1,000.00 $ 2,000.007Permanent Diversion Channel 1,130 LF $ 10.50 $ 11,865.008Temporary Silt Fence 3,120 LF $ 3.50 $ 10,920.009Temporary Erosion Controls 1 LS $ 5,000.00 $ 5,000.0010Seeding & Mulching 78,400 SY $ 0.50 $ 39,200.0011Remove Unsuitable Materials 7,840 SY $ 10.50 $ 82,320.0012Bonds, Insurance, Mobilization 1 LS $ 10,000.00 $ 10,000.0013 Closure Engineering Design, Bidding, and CQA Services 1 LS $ 40,000.00 $ 40,000.00Subtotal Cover Cap Construction$ 1,052,805.0014LFG Passive Wells 8 LS $ $77.00 $ 616.0015Gas Contractor Bonds, Insurance, Mobilization 1 LS $ 1,000.00 $ 1,000.0016LFG Engineering and CQA Services 1 LS $ 10,000.00 $ 10,000.00Subtotal LFG System Construction$ 11,616.001710% Contingency of Subtotal 1 LS $ 106,442.10 $ 106,442.10$ 1,170,863.10Landfill Gas System ConstructionTotal Closure CostUnit Price Extended TotalCover Cap ConstructionENGINEER'S OPINION OF COSTSFOR CLOSURE OF THEHIGHWAY 49 C&D LANDFILL PHASE 12008 DOLLARS 2008 DOLLARSItem Number Description1 Administrative/Recordkeeping 80 HRS/YR $ 125.00 /HR $ 10,000.00 1 /Yr $ 10,000.00 $ 300,000.002Groundwater Monitoring 13 EA $ 900.00 /EA $ 11,700.00 2 /Yr $ 23,400.00 $ 702,000.003Gas Monitoring 1 EA $ 650.00 /EA $ 650.00 2 /Yr $ 1,300.00 $ 39,000.004Stormwater Samples 3 EA $ 1,500.00 /EA $ 4,500.00 1 /Yr $ 4,500.00 $ 135,000.005Annual Mowing 16 AC $ 125.00 /AC $ 2,000.00 1 /Yr $ 2,000.00 $ 60,000.006 Wetlands Repair/Monitoring 1 EA $ 5,000.00 /EA $ 5,000.00 1 /Yr $ 5,000.00 $ 150,000.007 Final Cover Systems Repair 9 AC $ 5,250.00 /AC $ 47,250.00 1 /Yr $ 47,250.00 $ 1,417,500.008 Gas Management System 1 LS $ 230.00 /LS $ 230.00 1 /Yr $ 230.00 $ 6,900.009 Annual Contingency (10%) 1 LS $ 1,378.00 /LS $ 1,378.00 1 /Yr $ 1,378.00 $ 41,340.00$ 2,851,740.00Total Post Closure CostEstimated Quantity Unit PriceExtended TotalAnnual Quantity Annual CostsENGINEER'S OPINION OF COSTSFOR POST-CLOSURE OF THEHIGHWAY 49 C&D LANDFILL30 Yr Cost www.bpbarber.com BP BARBER APPENDIX G CONSTRUCTION QUALITY ASSURANCE PREPARED BY: BP BARBER 5900 NORTHWOODS BUSINESS PKWY, SUITE O CHARLOTTE, NORTH CAROLINA 28269 PROJECT NO. 05185-H49 CONSTRUCTION QUALITY ASSURANCE 1.0 Introduction and Scope This plan describes the tasks involved with the construction quality assurance (CQA) for cell construction and Closure at the Highway 49 C&D Landfill (Landfill) located in Harrisburg, NC. This CQA Plan also provides descriptions of portions of the quality control testing program that is to be performed. CQA refers to the duties of a CQA Consultant to monitor, inspect, and evaluate materials and workmanship during construction. The CQA activities document the compliance of the Contractor with the Drawings and Specifications for the cell construction and closure. For the purposes of this CQA Plan, the term Contractor refers to the company or individual that is responsible for performing the specific work item being examined to complete the cell construction at the site. This includes but is not limited to the earthwork contractor(s), or their subcontractor(s). The overall goal of this CQA Plan is to assure that proper construction techniques and procedures are utilized, and that the project is built in accordance with the project Construction Drawings and Specifications. The intent is to identify and define problems that may occur during construction and to verify that these problems are corrected before construction is complete. A written final report will be prepared summarizing the construction activities and verifying that the installation was performed in general accordance with the project Construction Drawings and Specifications. Where discrepancies between this document and the Specifications exist, the more stringent requirement shall govern the Contractor. 2.0 Duties of CQA Personnel It is the duty and responsibility of the CQA Consultant to implement the elements of this CQA Plan in order to ensure that the construction of the cell is performed in accordance with the Construction Drawings and Specifications, and State and Federal Regulations. The CQA personnel shall make every effort to communicate in an efficient and effective manner to the Contractor's representatives on issues concerning testing and observation procedures and results of materials or in situ tests performed. The CQA Consultant is not in a position to direct construction activities, but is encouraged to give advice to the Contractor, their employees, or the Landfill on items which may improve the quality or speed progress of the construction. The CQA Consultant and its representatives shall make every effort to furnish test results to the Contractor in a prompt manner. The representatives of the CQA Consultant shall report to the Owner any nonconformance items, which cannot be resolved promptly. 2.1 Personnel Qualifications 2.1.1 CQA Officer The CQA Officer will have formal academic training in civil engineering or a closely related discipline and will be a Registered Civil Engineer registered in the State of North Carolina. The CQA Officer will have experience in earthwork construction, landfill design and construction. The CQA Officer will have practical, technical and managerial experience that will allow the CQA Plan to be properly implemented. The CQA Officer must be able to communicate effectively with the Owner and the Contractor so that there will be a clear understanding of construction activities and the CQA Plan. 2.1.2 CQA Monitors The CQA monitors will work directly for the CQA officer. Each CQA Monitor will have formal training and practical experience in inspecting and testing earthwork construction including conducting and recording inspection activities, preparing daily reports, and performing field testing. In addition, knowledge shall be required of the specific field practices and construction techniques involving material handling, observation of testing procedures, equipment and reporting procedures. 3.0 MEETINGS 3.1 General Throughout the entire construction, close communication between all parties involved with the project is essential. In order to coordinate activities between the Owner, CQA Consultant, and Contractor, as well as set up proper lines of authority and reporting, meetings shall be held before and during construction. The type and purpose of meetings to be held for this project are described in this section. 3.2 Preconstruction Meeting A preconstruction meeting shall be held prior to project start-up. The parties that shall attend this meeting are the Owner, Contractor, and CQA Consultant. The purpose of this meeting is to: 1. Review the project Construction Drawings and Specifications; 2. Review project tasks and responsibilities; 3. Review the project schedule; 4. Define lines of communication and authority; 5. Establish reporting and documenting procedures; 6. Review testing equipment and test methods; 7. Establish protocol for submittal of CQA conformance testing data sheets; and 8. Conduct a site inspection to review work areas, lay-down areas, stockpile areas, access roads, and related project issues. The CQA Consultant shall document the preconstruction meeting, and copies shall be provided to all persons present at the meeting. 3.3 Weekly Progress Meetings A progress meeting may be held at a designated time during the week to review the previous week's activities or progress, discuss present and future work, and discuss any current or potential construction problems. The Owner, the CQA Officer (if necessary), the CQA Monitor, and the Contractor shall attend. All weekly progress meetings will be documented by the CQA Monitor or client’s representative who will transmit minutes to all parties. 3.4 Work Deficiency Meetings As needed, meetings shall be held to discuss specific problems or deficiencies that occur during construction that cannot be easily resolved. The CQA Monitor, CQA Officer, the Owner, and the Contractor shall attend the work deficiency meetings. The purposes of these meetings are to: 1. Identify the nature and extent of the problem; 2. Discuss the means necessary to correct the deficiency or problem; and 3. Provide a solution to the problem and determine how the corrective action shall be implemented. This meeting shall be documented by the CQA Monitor on a construction problem and solution data sheet form, and copies distributed to all parties. 4.0 EARTHWORK 4.1 General This section outlines the requirements for earthwork operations for the construction. The Contractor shall excavate soils and construct the prepared surface as necessary to achieve the grades set forth within the Construction Drawings and Specifications. He shall also purchase (if necessary) and place various aggregate and piping materials within the Erosion Control system for the project. Earthwork includes, but is not limited to: 1. Placement of engineered fill materials; 2. Placement and preparation of the subgrade; 3. Installation of surface water drainage structures; 4.2 Engineered Fill The CQA Monitor shall verify that the placement of engineered fill construction is performed by the Contractor with suitable materials to the grades and dimensions required by the Construction Drawings and Specifications. This work includes the construction of all berms, drainage structures, roads, and other engineered fills within the construction area. Prior to fill placement, the CQA Monitor shall verify that all clearing, grubbing, and stripping has been performed by the Contractor in accordance with the appropriate sections of the project Specifications. The CQA Monitor shall observe fill placement and perform the necessary field and laboratory testing to ensure that materials are compacted at the specified moisture content and to the minimum density specified. Tests to be performed and their frequency are provided in Table 1. All other soils or rock materials shall be constructed in accordance with the requirements set forth within the project Specifications or this CQA program. TABLE 1 ENGINEERED FILL CONSTRUCTION TESTING REQUIREMENTS TEST METHOD MINIMUM FREQUENCY OF TESTING Identification & Classification of Soil Type ASTM D 2488/D2487 1 per material type, 1 per 1,500 cy, or 1 per week (whichever results in the greater number of tests) Particle Size Analysis ASTM D 422 1 per material type, 1 per 1,500 cy or 1 per week (whichever results in the greater number of tests) Atterberg Limits ASTM D 4318 1 per material type, 1 per 1,500 cy or 1 per week (whichever results in the greater number of tests) Modified Proctor ASTM D 1557 1 per material type or 1 per 1,500 cy (whichever results in the greater number of tests) Dry Density by Nuclear Method ASTM D 2922 1 test per 250 cy of fill placed Dry Density By Sand Cone Method or Drive Tube Method ASTM D 1556/D2937 1 test per 20 nuclear density tests performed adjacent to nuclear density test for correlation Moisture Content by Oven or Microwave ASTM D 3017 or D 4643 1 test per 3 nuclear density tests 4.3 Subgrade Preparation The CQA Monitor shall verify that the subgrade preparation is performed by the Contractor with suitable materials to the grades and dimensions required by the Construction Drawings and Specifications. Prior to preparation, the CQA Monitor shall verify that all clearing, grubbing, and stripping has been performed by the Contractor in accordance with the appropriate sections of the project Specifications. The CQA Monitor shall observe subgrade preparation (and if necessary fill placement) and perform the necessary field and laboratory testing to ensure that engineered fill materials (if necessary) are compacted at the specified moisture content and to the minimum density specified. Tests to be performed on the engineered fill are provided in Table 1. No specific testing is required for the prepared subgrade if fill materials have not been placed. All other soils or rock materials shall be constructed in accordance with the requirements set forth within the project Specifications or this CQA program. Upon completion of the prepared subgrade, the CQA Monitor and Contractor shall inspect the prepared subgrade to ensure that it will provide a firm base. The CQA Officer and CQA Monitor will inspect the prepared subgrade for the following: 1. Verify that angular or sharp rocks, rocks larger than the specified diameter, and other debris are not present on the surface. 2. Verify that any soft or yielding areas of the prepared subgrade are adequately excavated and replaced with suitable soils in accordance with the Specifications for prepared subgrade material. 4.4 Surface Water Drainage Structures The CQA Monitor shall observe the installation of the surface water drainage structures for the proposed work in accordance with the Specifications and Drawings. Surface water drainage structures may include, but would not be limited to drainage channels, ponds, culverts, drop inlets, risers, erosion control materials and manholes. The CQA Monitor shall test or otherwise review the test data for materials to be supplied by the Contractor in accordance with the Specifications. Materials requiring testing may include, but would not be limited to concrete (and concrete aggregates), engineered fill, trench bedding and backfill, filter drain rock, and erosion control materials (rip rap, etc.). At a minimum, cast-inplace concrete, grout, etc. shall be tested for conformance with the Specifications at a frequency of once per each day of placement for each type of material supplied. Tests shall include slump, air entrainment (if applicable), and compression strength (a set of three cylinder samples for testing one at 7 days, one at 28 days, and one spare). 5.0 WORK DEFICIENCIES When deficiencies are discovered, the CQA Monitor shall immediately determine the nature and extent of the problem, notify the Contractor of the problem, and complete the required documentation. The CQA Monitor shall notify the Contractor within a 1/2 hour of discovering any deficiency. If the deficiency will cause significant construction delays or require substantial rework, the CQA Monitor shall notify the Owner and the CQA Officer. The Contractor shall correct the deficiency to the satisfaction of the CQA Monitor. If the Contractor is unable to correct the problem, the CQA Monitor shall be asked to develop and recommend a solution to the CQA Officer for his approval. The corrected deficiency shall be retested before the Contractor performs additional work. The CQA Monitor shall document all retests and the steps taken to correct the problem on a field construction inspection report and on construction problem and solution data sheet forms. 6.0 DOCUMENTATION 6.1 Daily Records At a minimum, daily records shall consist of field notes, a summary of the daily construction activities, associated testing activities, and observation and data sheets. All project records shall be maintained in a well organized project file at the job site and shall be available for review by the CQA Officer, Contractor, the Owner, and jurisdictional agencies at all times. The CQA Officer shall review the reports and field notes prepared by the CQA Monitor and prepare a summary report from the daily records and observation data sheets. The CQA Monitor's daily summary report shall be available to the CQA Officer and the Contractor for review and shall include the following information: 1. Date, project name, and location; 2. Weather data; 3. A description of on-going construction; 4. A summary of test results identified as passing, failing, or in the event of a failed test, retests; 5. A summary of decisions regarding acceptance of the work and/or corrective actions taken; and 6. The signature or initials of the CQA Monitor. 6.2 Weekly Progress Reports The CQA Monitor shall prepare a weekly progress report summarizing the CQA activities for the preceding period. The CQA Officer shall review the daily reports and summaries of observation and data sheets in addition to the weekly progress reports. The CQA Officer shall discuss progress and the results of all testing and CQA observation and documentation with the CQA staff to ensure that the construction is of excellent quality. 6.3 Design Change Reports Design and specification changes may be required during construction. In such cases, the CQA Monitor shall notify the CQA Officer. Design and specification changes shall only be made with written agreement of the CQA Consultant and the Owner. 6.4 Construction Difficulty Reports In the event that the Contractor has extreme difficulty in the performance of any specified activities required, a special report shall be prepared to address the problem(s). The Owner, the Contractor, CQA Monitor, and CQA Officer (if needed) shall meet to discuss any problems encountered and to address the solution. If changes to the Construction Specifications are required, the CQA Consultant and the Owner shall be notified and approve any changes in writing. 6.5 Final Report At the completion of the project, the CQA Consultant shall prepare a Statement of Certification to be submitted to the Owner and Solid Waste Section. Within 90 days of project completion, the CQA Consultant shall prepare a final construction report suitable for presentation to Solid Waste Section. Copies of all reports and test results prepared by the CQA Monitor shall be submitted to the CQA Officer for review. Copies of all the documents shall be maintained at the CQA Consultant's office. This report shall verify that the work has been performed in compliance with the Construction Drawings and the Specifications. At a minimum this report shall contain: 1. A summary of all construction activities; 2. A description of significant construction problems and the resolution of these problems; 3. A list of changes (if any) from the Construction Drawings and Specifications and the justification for these changes; and 4. A statement signed and sealed by a Registered Civil Engineer or Certified Engineering Geologist registered in the State of North Carolina verifying that the project was constructed in general accordance with the Construction Drawings, Specifications, and CQA Plan. 6.6 Record Drawings A set of record drawings shall be prepared by the Contractor during the course of construction. The record drawings shall accurately locate all construction items including the location of piping and floor grade, etc. www.bpbarber.com BP BARBER APPENDIX H OPERATIONS PLAN HIGHWAY 49 CONSTRUCTION & DEMOLITION LANDFILL EXPANSION PHASE 1 OPERATIONS PLAN Prepared for Greenway Waste Solutions of Harrisburg, Inc. 19109 West Catawba Avenue Suite 200 Cornelius, North Carolina 28031 June 2011 June 3, 2011 North Carolina Board of Examiners for Engineers and Surveyors License No. F-0785 309 East Morehead Street, Suite 160 Charlotte, North Carolina 28202 i Operations Plan - H49 Final.doc TABLE OF CONTENTS 1. INTRODUCTION..................................................................................................................................................... 1-1 1.1 General ......................................................................................................................................................... 1-1 1.2 Purpose ........................................................................................................................................................ 1-1 1.3 Reference Documents .................................................................................................................................. 1-1 1.4 Regulations ................................................................................................................................................... 1-2 1.5 Location ........................................................................................................................................................ 1-2 2. OPERATIONAL DRAWINGS .................................................................................................................................. 2-1 3. WASTE ACCEPTANCE AND DISPOSAL REQUIREMENTS ................................................................................ 3-1 3.1 Asbestos Waste ............................................................................................................................................ 3-1 3.2 Waste Exclusions ......................................................................................................................................... 3-1 3.3 Recycling Facility .......................................................................................................................................... 3-2 3.3.1 Overview ........................................................................................................................................... 3-2 3.3.2 Contact Information........................................................................................................................... 3-2 3.3.3 Recycling Facility Process ................................................................................................................ 3-3 3.3.4 Holding Time for Recyclable ............................................................................................................. 3-3 3.3.5 Record Keeping Program ................................................................................................................. 3-3 3.4 Other Recycling ............................................................................................................................................ 3-4 3.4.1 White Goods ..................................................................................................................................... 3-4 3.4.2 Tires .................................................................................................................................................. 3-4 3.4.3 Concrete/Inert Material ..................................................................................................................... 3-4 3.4.4 Shingles ............................................................................................................................................ 3-4 3.4.5 Wood Waste ..................................................................................................................................... 3-4 3.4.6 Gypsum Wallboard/Sheetrock Recycling .......................................................................................... 3-4 3.5 Mobile Home Deconstruction ........................................................................................................................ 3-5 3.5.1 Overview ........................................................................................................................................... 3-5 3.5.2 Contact Information........................................................................................................................... 3-5 3.5.3 Mobile Home Deconstruction Process .............................................................................................. 3-6 3.6 Waste Screening .......................................................................................................................................... 3-7 3.7 Random Load Inspections ............................................................................................................................ 3-8 3.8 Cover, Spreading, and Compacting .............................................................................................................. 3-9 3.9 Air Criteria and Fire Control .......................................................................................................................... 3-9 3.10 Access and Safety ........................................................................................................................................ 3-9 3.11 Erosion and Sedimentation Control ............................................................................................................ 3-10 3.12 Stormwater Conveyance and Mitigation ..................................................................................................... 3-10 3.13 Operating Record and Recordkeeping Requirements ................................................................................ 3-11 1-1 Operations Plan - H49 Final.doc HIGHWAY 49 C&D LANDFILL EXPANSION PHASE 1 OPERATIONS PLAN 1. INTRODUCTION 1.1 General This document is the Operations Plan for the Highway 49 Construction & Demolition Landfill Expansion - Phase 1 (Facility), located in Harrisburg, Cabarrus County, North Carolina. The Plan serves as a guide to the landfill operator with respect to routine landfill operations, environmental monitoring, and record- keeping. The Facility is permitted to operate as a construction and demolition (C&D) landfill in accordance with North Carolina Department of Environment and Natural Resources (NCDENR), Division of Waste Management Permit Number 13-06. The Facility is expected to have a maximum operational waste acceptance rate of 120,000 tons per year and is expected to be in operation for a minimum of 5 years from commencement of waste disposal within Phase 1. Equipment and staffing recommendations in this manual are based on these disposal rates and are subject to change in the event of future modification to waste acceptance rates at the Facility. 1.2 Purpose The operations plan is intended to serve as a site reference. Every employee should be acquainted with its contents and location at the site. Each section of this plan is self contained, easily updated, and may be used in the field, for training sessions, or self-instruction. The operations manual addressed the following topics: · Personnel requirements · Entrance procedures and recordkeeping · Incoming vehicle inspection · Traffic control · Landfilling operations · Equipment requirements · Operation and maintenance of environmental controls · Contingency and emergency procedures · Safety practices and plan implementation This Operations Plan has been prepared in accordance with North Carolina Administrative Code (NCAC) Title 15A Section 13B .0542. Furthermore, the plan is based on engineering judgment and reflects generally accepted solid waste landfilling techniques. 1.3 Reference Documents This operations plan constitutes a portion of the Highway 49 Construction & Demolition Landfill Expansion - Phase 1 Permit to Construct Application prepared by BP Barber. The entire Permit to Construct Application should be kept on file with this plan at the site to supplement this plan in terms of long-term 1: Introduction Highway 49 C&D Landfill Operations Plan 1-2 Operations Plan - H49 Final.doc facility development plans, monitoring requirements, engineering design, site hydrogeology, construction activities, and site closure and post–closure care. Other documents pertinent to facility operations and site development include: · North Carolina Solid Waste Management Rules, 15A NCAC 13B with current amendments · Erosion and Sediment Control Planning and Design Manual, NCDENR, June 2006 · Erosion and Sediment Control Field Manual, NCDENR, June 2006 · Documents 1-12 of the Permit to Construct (Phase 2). Issued to Highway 49 C&D Landfill Inc., September 30, 2004. · Documents 1-13 of the previous Permit to Operate (Phase 2A). Issued to Highway 49 C&D Landfill Inc., February 4, 2005. · Modification to Current Operation Plan/Permit to Operate – Revised, Highway 49 C&D Landfill Inc., Cabarrus County, North Carolina. Prepared by: BP Barber Engineering. Prepared for: Highway 49 C&D Landfill Inc. February 15, 2007. · East Section of Phase 2 As-Built Subgrade Verification, Highway 49 C&D Landfill Inc., Cabarrus County, North Carolina. Prepared by: Chas. H. Sells, Inc. Prepared for: Highway 49 C&D Landfill Inc. August 9, 2007. · Operations Plan, Highway 49 C&D Landfill Inc., Cabarrus County, North Carolina. Prepared by: BP Barber Engineering. Prepared for: Highway 49 C&D Landfill Inc. August 29, 2007. 1.4 Regulations Solid Waste Management Rules 15A NCAC 13B .500 and all conditions of the operating permit granted by the NCDENR Division of Waste Management, shall take precedence and be complied with by landfill operators if there is an actual or perceived contradiction with the text of this plan, unless written consent for variance(s) is granted by the NCDENR Division of Waste Management. The Facility supervisory staff should be familiar with the State Solid Waste Management Rules and the Facility permit(s). 1.5 Location The Facility is located on Speedrail Court, in Harrisburg, North Carolina. Currently, landfilling operations are on-going at a previously approved site adjacent to the west of the expansion area. 2-1 Operations Plan - H49 Final.doc HIGHWAY 49 C&D LANDFILL EXPANSION PHASE 1 OPERATIONS PLAN 2. OPERATIONAL DRAWINGS Appendix A of BP Barber’s Permit to Construct Application consists of drawings which illustrate the site development prepared on topographical maps representative of existing site conditions. These drawings are consistent with the requirements of Subparagraph (d)(1) of Rule .0537 of 15A NCAC 13B. Appendix A consists of drawings as they relate to long-term operations of the facility consistent with Subparagraph (d)(2) of Rule .0537 15A NCAC 13B. Attached to this Operation Plan is a Site Plan indicating areas of non-landfilling activities. 3-1 Operations Plan - H49 Final.doc HIGHWAY 49 C&D LANDFILL EXPANSION PHASE 1 OPERATIONS PLAN 3. WASTE ACCEPTANCE AND DISPOSAL REQUIREMENTS The Facility will 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 the C&DLF is not permitted to receive, including waste from outside the area the landfill is permitted to serve. 3.1 Asbestos Waste Friable asbestos waste must be 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 shown on Operation drawings: (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. Non-friable asbestos may be accepted consistent with normal operating procedures as set forth in a following section. 3.2 Waste Exclusions The Facility will accept all types of wastes generated within approved service area except those prohibited by 15A NCAC 13B .0542 (e). Specifically, the following types of wastes will not be accepted: (1) Containers such as tubes, drums, barrels, tanks, cans, and bottles unless they are empty and perforated to ensure that no liquid, hazardous or municipal solid waste is contained therein, (2) Garbage as defined in G.S. 130A-290(a)(7), (3) Hazardous waste as defined in G.S. 130A-290(a)(8), to also include hazardous waste from conditionally exempt small quantity generators, (4) Industrial solid waste unless a demonstration has been made and approved by the Division that the landfill meets the requirements of Rule .0503(2)(d)(ii)(A), (5) Liquid wastes, (6) Medical waste as defined in G.S. 130A-290(a)(18), (7) Municipal solid waste as defined in G.S. 130A-290(a)(18a), (8) Polychlorinated biphenyls (PCB) wastes as defined in 40 CFR 761, (9) Radioactive waste as defined in G.S. 104E-5(14), (10) Septage as defined in G.S. 130A-290(a)(32), (11) Sludge as defined in G.S. 130A-290(a)(34), (12) Special wastes as defined in G.S. 130A-290(a)(40), (13) White goods as defined in G.S. 130A-290(a)(44), and (14) Yard trash as defined in G.S. 130A-290(a)(45), 3. Waste Acceptance and Disposal Requirements Highway 49 C&D Landfill Operations Plan 3-2 Operations Plan - H49 Final.doc (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. (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. 3.3 Recycling Facility A Recycling Facility will be operated on site. The facility consists of approximately two (2) acres and is located within the Landfill Facility boundary. The approximately 17,000 square foot Facility is an enclosed structure and receives mixed C&D loads of material. The waste acceptance will be consistent with Section 3.2 of this document. The facility includes an open paved area for parking, the structure itself, and a pole barn for storage. 3.3.1 Overview This Operations Manual was prepared for Recycling Facility located within the Facility boundary of the Highway 49 C&D Landfill and Recycling Center (Highway 49). The Recycling Facility is strictly for the processing of C&D material in order to recycle materials. Highway 49 plans to recycle as many varieties of materials as possible as end users are available. Initially, scrap metal recycling, wood waste, sheetrock, corrugated cardboard roofing shingles and inert materials will be recycled. Once an end-user of another material (i.e. glass) is located, these other materials may be recycled. Any non-recyclable material will be disposed of appropriately by Highway 49 upon completion of the recycling process. The information contained herein was prepared to provide landfill personnel with a clear understanding of how the facility would be operated. While deviations from the operations outlined here may be acceptable, they should be reviewed and approved by the Design Engineer and the Highway 49 Solid Waste Manager. 3.3.2 Contact Information All correspondence and questions concerning the operation of the Recycling Facility should be directed to the appropriate County and State personnel listed below. For fire or police emergencies dial 911. North Carolina Department of Environment and Natural Resources 3. Waste Acceptance and Disposal Requirements Highway 49 C&D Landfill Operations Plan 3-3 Operations Plan - H49 Final.doc North Carolina Department of Environment and Natural Resources 610 E Center Ave Mooresville, NC 28115 Phone: (704) 663-1699 Fax (704)663-6040 Division of Waste Management (DWM) - Solid Waste Section: Western Area Supervisor: Deborah Aja Permitting Engineer: John Murray, PE Waste Management Specialist: Teresa Bradford Division of Land Resources - Land Quality Section: Regional Engineer: Zahid Kahn, PE 3.3.3 Recycling Facility Process Selected in-coming loads will be weighed at the existing scalehouse and directed to the Facility. All in-coming loads to the Facility will be unloaded under the cover of the structure and all processing will be indoors. The recycled material will be loaded into transport trailers within the structure. There will be no uncovered storage of unprocessed material outside of the structure. Out-going loads will be weighed at the existing scalehouse. Liquids, if any, will not be released from the covered structure. Any non-recyclable material will be disposed of appropriately by Highway 49. 3.3.4 Holding Time for Recyclable Once a recyclable material is removed from the C&D loads, it may be stockpiled within the Facility for up to 30 days. No materials shall be kept in this area for more than 30 days, nor shall they be stockpiled in other areas waiting recycling. Temporary storage of inert material may be stored uncovered outside of the structure and other materials such as concrete, wood waste, shingles, metals may be relocated to the temporary stockpile areas adjacent to the landfill working face as indicated on the attached site plan. Additional recovered material will be stored in a pole barn on site. 3.3.5 Record Keeping Program Highway 49 shall maintain the following records related to the Recycling Facility in an operating record at the landfill: A. Weight of C&D loads processed; B. Weight of C&D loads unrecoverable; C. Date and disposal information for all recycled materials tons include location and vendor of recipient of recycled materials. The operating record will be kept up to date and reconciled on a monthly basis by the Landfill Manager or his designee. It will be presented upon request to DWM for inspection. A copy of this Operations Manual will be kept at the landfill and will be available for use at all times. 3. Waste Acceptance and Disposal Requirements Highway 49 C&D Landfill Operations Plan 3-4 Operations Plan - H49 Final.doc 3.4 Other Recycling In addition to the Recycling Facility, incoming C&D waste will be recycled as much as practical. Stockpile areas will be located near, but clearly segregated from the working face. These stockpile areas will be kept in a clean orderly fashion. Incoming waste with easily segregatable recyclables will be unloaded in a recycling area close to the working face. Metals pulled from the load will be placed in the on-site metal recycling container. Clean cardboard will be removed and transported to an on-site bailer. 3.4.1 White Goods White goods will be handled in accordance with all State and Federal regulations. Material from the Recycling Facility may also be stored in this stockpile. Any white goods containing CFC’s will have them managed properly prior to removal of the white goods. 3.4.2 Tires Stockpiled tires will be covered and handled in accordance with all State and Federal regulations. There will be a designated container on site at all times for tires removed from the working face for final disposal at a properly permitted facility. Material from the Recycling Facility may also be stored in this stockpile. Tires will not be stockpiled for a time period exceeding 30 days. The stockpile will be in an enclosed trailer or covered area. 3.4.3 Concrete/Inert Material Inert debris such as brick, concrete, concrete block, rock, etc. will be removed and transported to the reprocessing/material storage area for crushing. Material from the Recycling Facility may also be stored in this stockpile. The material will be stockpiled in a pile not to exceed 500 tons for periodic crushing. 3.4.4 Shingles Shingles will be stockpiled on site for recycling. The stockpile area will be close to the working face, but clearly segregated from it. Material from the Recycling Facility may also be stored in this stockpile. The grinding of shingles will be done by properly permitted third party resources. The stockpile of shingles will not exceed 500 tons. The ground shingles will be transported off-site to a properly permitted third party end- user. 3.4.5 Wood Waste Wood waste consisting of pallets, dimension lumber, and similar non-treated material will be stockpiled on site for recycling. The stockpile area will be close to the working face, but clearly segregated from it. Material from the Recycling Facility may also be stored in this stockpile. The stockpile of wood waste will not exceed 500 tons. 3.4.6 Gypsum Wallboard/Sheetrock Recycling A gypsum wallboard/sheetrock recycling area will be operated on site. The area will be an enclosed pole building and receive only “clean” source separated material including off-specification material from manufacturers. In-coming loads will be weighed at the existing scalehouse and directed to the area. Segregated loads of some products such as gypsum may originate on the project construction site and transported to the facility at which time they are directed to our gypsum reprocessing area by-passing the 3. Waste Acceptance and Disposal Requirements Highway 49 C&D Landfill Operations Plan 3-5 Operations Plan - H49 Final.doc indoor Recycling Center. The material is deposited on the ground and stockpiled outdoors but is covered with weighted tarps to keep the material dry awaiting processing. When grinding is necessary to develop outgoing product, the Peterson Horizontal Grinder is used to grind the gypsum product to a 2 inch minus material. This product is further refined with a Sandvik Tir-Screener to further enhance the marketability gypsum product to meet the end users specifications. The fine material has a direct feed conveyor that discharges the material into a Pole Structure that is tarped on all sides. This is performed for two reasons; 1) the product must remain dry at all times because the low moisture content is required by our client and 2) the fine material has the highest dust emissions potential. By discharging this material in the building it eliminates the dust generated by coming off the end of the conveyor and stockpiling on the ground. The larger more coarse product (much less dust potential), is screened leaving some of the original wall board paper backing intact is discharged from the other conveyor line is covered by tarps for transportation to another end user. The fine material is stored in the Pole building awaiting transportation to the final end user. At no time will stockpiled unprocessed sheetrock exceed 600 tons. The processed material will be stored in bunkers consisting of fine screenings, medium screenings, and coarse/paper screenings. Out-going loads will be weighed at the existing scalehouse. At no time will stockpiled material exceed 600 tons. The facility recycles all of the in-coming material from Griffin Brothers Reclamation Centers and other sources. One hundred percent of the by-product is sold to customers throughout the region for a variety of uses. 3.5 Mobile Home Deconstruction 3.5.1 Overview This Operations Manual was prepared for Mobile Home Deconstruction Area located adjacent to the Highway 49 C&D Landfill and Recycling Center (Highway 49). The Mobile Home Deconstruction Area is strictly for the deconstruction of mobile homes in order to recycle materials from the mobile homes. Highway 49 plans to recycle as many varieties of materials as possible as end users are available. Initially, scrap metal recycling will be conducted. Once an end-user of another material (i.e. glass) is located, these other materials may be recycled. Any non-recyclable material will be disposed of appropriately by Highway 49 upon completion of the deconstruction process. The information contained herein was prepared to provide landfill personnel with a clear understanding of how the facility would be operated. While deviations from the operations outlined here may be acceptable, they should be reviewed and approved by the Design Engineer and the Highway 49 Solid Waste Manager. 3.5.2 Contact Information All correspondence and questions concerning the operation of the Highway 49 Mobile Home Deconstruction Area should be directed to the appropriate County and State personnel listed below. For fire or police emergencies dial 911. North Carolina Department of Environment and Natural Resources North Carolina Department of Environment and Natural Resources 610 E Center Ave Mooresville, NC 28115 3. Waste Acceptance and Disposal Requirements Highway 49 C&D Landfill Operations Plan 3-6 Operations Plan - H49 Final.doc Phone: (704) 663-1699 Fax (704)663-6040 Division of Waste Management (DWM) - Solid Waste Section: Western Area Supervisor: Deborah Aja Permitting Engineer: John Murray, PE Waste Management Specialist: Teresa Bradford Division of Land Resources - Land Quality Section: Regional Engineer: Zahid Kahn, PE 3.5.3 Mobile Home Deconstruction Process Mobile homes will be deconstructed using the following processes. 3.5.3.1 Access Mobile home owners seeking disposal will contact the Landfill and be placed on a waiting list. No more than TWO (2) mobile homes will be allowed on-site for deconstruction at one time. Once space is available for a mobile home, the scale operator at the landfill will contact the next owner on the waiting list. The owner will have a 48 hour window in which to contact the Landfill with information regarding the delivery date and hauler. If owner can not arrange delivery within this initial 48 hour period, the owner may make alternate arrangements for delivery and must notify the Landfill a minimum of 48 hours prior to planned delivery. The delivered mobile home will not be weighed on the scales at time of delivery, but the owner will be charged based upon the size and dimensions of the mobile home. If delivery is not made within 48 hours of the scheduled delivery date, the owners name will be placed on the waiting list and the owner will be notified. If an owner has more than one mobile home, they will be rotated with others on the waiting list. 3.5.3.2 Waste Disposal All mobile homes must be free of garbage, household hazardous waste, and all other non-construction and demolition waste prior to acceptance by the landfill. 3.5.3.3 White Goods White goods will be accepted with the mobile home. White goods will be removed using a track-hoe and handled in accordance with all State and Federal regulations. Any white goods containing CFC’s will have them managed properly prior to removal of the white goods, and deconstruction of the mobile home. 3.5.3.4 Asbestos Since asbestos may be located in the building materials of mobile homes constructed prior to 1983, all mobile homes built before 1/1/1983 will be thoroughly sprayed with water (both interior and exterior) to minimize dust. Upon demolition of a mobile home constructed prior to 1983, the waste generated will be placed in the C&D landfill and covered with six inches of soil or approved alternate daily cover. 3. Waste Acceptance and Disposal Requirements Highway 49 C&D Landfill Operations Plan 3-7 Operations Plan - H49 Final.doc 3.5.3.5 Deconstruction of Mobile Homes Once accepted, the mobile home will be placed in the mobile home deconstruction area. Mobile home deconstruction will be dependant upon weather conditions and manpower availability and will ONLY take place in the deconstruction area. Prior to deconstruction, mobile homes constructed before 1983 will be thoroughly sprayed with water to minimize dust (as noted above). The home will then be deconstructed using a track-hoe. The track-hoe will tear the trailer apart and lay the pieces on the ground to be separated by landfill personnel. The personnel will separate the non-recyclable materials from the recyclable materials. Initially, scrap metal is planned for recycling. As other end-users for other materials are available, other materials may be separated for recycling. All material not planned for recycling will be placed in the C&D landfill before the end of the day in which the deconstruction takes place. Material from mobile homes constructed prior to 1983 will be covered prior to the end of the day. All recyclable materials will be stockpiled in the deconstruction area for future recycling. NO OPEN FLAMES OR CUTTING WITH TORCHES WILL BE ALLOWED WITHIN 100 FEET OF THE C&D LANDFILL. 3.5.3.6 Holding Time for Mobile Homes All mobile homes must be deconstructed within 45 days from acceptance into the deconstruction area. Upon receipt at the landfill, the date shall be painted on the side or end of the mobile home, or on the frame, for identification purposes for Solid Waste Section personnel. 3.5.3.7 Record Keeping Program Highway 49 shall maintain the following records related to the Mobile Home Deconstruction in an operating record at the landfill: A. Mobile Home Acceptance records including dates and description; B. Owner and hauler information for each mobile home; C. Date of deconstruction for each mobile home and materials to be recycled; D. Date and disposal information for all recycled materials tons include location and vendor of recipient of recycled materials. E. Date and certification of CFC’s removed. The operating record will be kept up to date by the Solid Waste Director or his designee. It will be presented upon request to DWM for inspection. A copy of this Operations Manual will be kept at the landfill and will be available for use at all times. 3.6 Waste Screening The landfill operator shall be responsible for screening wastes to ensure that hazardous or unacceptable wastes are not disposed in the landfill. Screening of wastes (load inspections) shall be accomplished as follows: Informal load checking will be the responsibility of all employees, particularly those that work at the entrance area and those that work at or near the active fill area. Each employee will observe vehicles entering the Facility and landfill for any potentially unauthorized waste and will alert management personnel if any unauthorized wastes are suspected. Through the waste collection programs, there will be several checkpoints: · Facility Entrance – Only authorized vehicles and material will be allowed beyond the scales. The scale attendant will refuse entry to any unauthorized vehicles or vehicles observed carrying unauthorized waste. 3. Waste Acceptance and Disposal Requirements Highway 49 C&D Landfill Operations Plan 3-8 Operations Plan - H49 Final.doc · Active face checkpoints – All incoming loads of waste will be observed by the equipment operators as it is discharged at the active face · Checkpoints during compaction at active face – Material will be inspected by the landfill compactor operator as it is compacted at the active face. 3.7 Random Load Inspections In addition to the visual inspections performed by the equipment operator/attendants, a random inspection program shall be implemented to detect and prevent disposal of any of the unauthorized wastes listed in previously. Inspections conducted as part of this program shall be performed by personnel trained in the following areas: methods for identification and determination of unauthorized wastes, handling procedures for unauthorized wastes, record keeping requirements of the program, and occupational health and safety. Inspection personnel shall also have a thorough understanding of the North Carolina Hazardous Waste Management Regulations (15A NCAC 13A) and the North Carolina Regulated Medical Waste Management Regulations (15 NCAC 13B .1203 ). 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 unauthorized waste. Inspections should be performed at the minimum of the following frequency: · Once a week The inspections also need to be random. The time of day and day of week shall vary between inspections. The transporter/hauler selected for inspection shall also vary between inspections. The procedure for the inspection 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 unauthorized waste is observed, or suspected, the vehicle shall be prohibited from unloading, and shall be directed out of the facility. · If no unauthorized 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 unauthorized waste is identified, the waste shall be transferred to the working face for disposal. · If unauthorized waste is identified in the load, and the unauthorized 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 can not 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. 3. Waste Acceptance and Disposal Requirements Highway 49 C&D Landfill Operations Plan 3-9 Operations Plan - H49 Final.doc · 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 will safely identify the nature of the unauthorized 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 unauthorized waste. The Division will be informed in writing of the incident and steps taken to properly dispose of the unauthorized waste. Management of this Facility reserves the right to establish acceptance criteria and procedures for certain non- municipal solid wastes. These may be more restrictive than required by law based on quantities and characteristics of the waste stream, current operating status of the landfill, and characteristics of waste streams previously received. Acceptability will be based on judgment of the landfill operator’s technical personnel with respect to regulatory requirements, physical and chemical qualities and other technical considerations. 3.8 Cover, Spreading, and Compacting The working face will be restricted to the smallest area feasible and compacted as densely as feasible. Any area that exceeds one-half (1/2) acre or more on a weekly basis will be covered with six (6) inches of earthen material. Cover may be placed at more frequent intervals to control disease, vectors, fires, odors, blowing litter, and scavenging. Areas where additional waste will not receive waste for three (3) months, but will receive additional waste in the future will be covered and stabilized with vegetative cover or other stabilizing material. Appropriate methods including fencing and diking will be used to confine wind blown solid waste. At the end of each day, wind blown waste will be collected and disposed of in the landfill. 3.9 Air Criteria and Fire Control No open burning of waste will be permitted on site. The Division will be notified verbally within 24 hours and in writing with 15 days of any fire and/or explosion at the facility. If a fire occurs at the landfill, the Harrisburg Fire Department will be notified. Hot loads that are brought to the facility will be immediately dumped away from the landfill and the fire department notified. The hot load will be sprayed down with water until extinguished. The load is then to be reloaded for disposal in the landfill. 3.10 Access and Safety The site has controlled access with the use of entrance gates. The entrance gates allow entry to the currently operating landfill located to the west of the expansion area. The same entrance will be used for access to the expansion area, and will remain gated. Access to the expansion area is restricted to the entrance gate only. Coddle Creek prevents access to the site from the north and the east, while the currently operating landfill (with fencing and wooded buffer) prevents access from the west. Access to the site from the south is also restricted by a wooded buffer. Access roads are all weather construction and will be maintained in good condition. A scalehouse is located at the entrance with an attendant present during operational hours. The attendant is responsible for evaluating loads to assure compliance with operation requirements and to direct the loads to 3. Waste Acceptance and Disposal Requirements Highway 49 C&D Landfill Operations Plan 3-10 Operations Plan - H49 Final.doc the appropriate location on site—landfill, recycling/processing area, or composting facility. In addition, signs are posted to direct loads to the appropriate area. Dust is controlled on access roads through the use of a water truck. Signs are posted indicating that liquid, hazardous, and municipal wastes are prohibited. 3.11 Erosion and Sedimentation Control The Erosion and Sedimentation Control Plan was developed by BP Barber to meet all requirements set forth by the Sedimentation Pollution Control Law (15A NCAC 4), and other requirements set forth by the North Carolina Department of Environment and Natural Resources (NCDENR). All erosion and sedimentation control measures were designed based on a 25 year, 24 hour storm event occurring in Cabarrus County, North Carolina per the NCDENR Division of Waste Management-Solid Waste Program. Temporary measures to be used on the site are one (1) sediment basin and silt (sediment) fencing. These, along with permanent ditches and seeding make up all erosion control measures to be utilized on the site. The sediment basin shall be inspected at minimum weekly, and after each significant rain event (1/2 inch or greater). Sediment shall be removed and the basin restored to original dimensions after sediment has accumulated to one-half (1/2) of design volume indicated by cleanout stripe on riser structure. Removed sediment shall be placed in an area that has sediment controls in place. Sediment basin spillways, baffles, embankments and outlet control structure shall be inspected at the same time for erosion damage and piping (embankment only). All necessary repairs shall be made immediately to prevent basin failure. Silt fencing shall be inspected at least once per week and after every rainfall event. Any tears, cracks or overall failure should be repaired and/or replaced immediately. Sediment deposits shall be removed as necessary to ensure proper functioning of fencing. Silt fencing shall remain until final site stabilization has occurred. Permanent ditches should be seeded and matted immediately after their construction; they should be inspected after all rain events for any failure of the ditch or erosion control matting. All outlet protection measures used to protect from damage to channel vegetation shall be inspected for wash out. All necessary repairs/replacements should be made immediately, and rip rap should be added where necessary. Embankment and landfill cover slopes shall be periodically inspected for erosion. The slopes shall be mowed no more than twice per year. The embankment slopes shall be re-fertilized in the second year unless vegetation growth is fully adequate. The damaged areas shall be re-seeded (permanent seeding for embankment slopes and temporary seeding for landfill cover slopes), fertilized and mulched immediately. Seeding, fertilizing and mulching shall be in accordance with the Erosion and Sedimentation control plan. Appendix A presents all erosion and sedimentation control measures on existing and proposed topography. Appendix D includes all relevant calculations and references for erosion and sedimentation control measures design. 3.12 Stormwater Conveyance and Mitigation The Town of Harrisburg approved the request for a stormwater exemption in accordance with the Town of Harrisburg’s Stormwater Ordinance (see letter in Appendix E). Therefore the facility will not be required to implement structural Stormwater BMPs or prepare a stormwater impact statement. Stormwater will be transported by vegetative conveyances to the maximum extent possible. 3. Waste Acceptance and Disposal Requirements Highway 49 C&D Landfill Operations Plan 3-11 Operations Plan - H49 Final.doc 3.13 Operating Record and Recordkeeping Requirements The owner and operator will record and retain at the facility or an alternative location the following information: · Records for random waste inspections, monitoring results, certifications of training, and training procedures. · Amount of recycled material recovered from in-coming waste. (Weighed as exported from the site). · Amount of waste received at the facility and county of generation. · Cost estimates for closure and post-closure. · Notation of date and time of placement of cover material. · All audit records, compliance records, and inspection reports. All information contained in the operating record will be furnished to the Division upon request or made available for inspection by the division. The operating record will also include a copy of all approved permits and Monitoring Plans.